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Sample records for canadian naturalistic study

  1. A Canadian naturalistic study of a community-based cohort treated for bipolar disorder

    OpenAIRE

    Chandresena Ranjith; Lee Bobbie; Sagman Doron; Jones Barry; Brunner Elizabeth

    2010-01-01

    Abstract Background Bipolar illness is associated with significant psychosocial morbidity and health resource utilization. Second generation antipsychotics, used alone or in combination with mood stabilizers are effective in treating acute mania in community settings. This study was designed to compare the change in clinical parameters and resource utilization at one month in a group of patients who required treatment intervention for exacerbation of mania. The clinical response at one year w...

  2. A Canadian naturalistic study of a community-based cohort treated for bipolar disorder

    Directory of Open Access Journals (Sweden)

    Chandresena Ranjith

    2010-03-01

    Full Text Available Abstract Background Bipolar illness is associated with significant psychosocial morbidity and health resource utilization. Second generation antipsychotics, used alone or in combination with mood stabilizers are effective in treating acute mania in community settings. This study was designed to compare the change in clinical parameters and resource utilization at one month in a group of patients who required treatment intervention for exacerbation of mania. The clinical response at one year was also evaluated. Methods 496 patients were enrolled at 75 psychiatric practices across Canada. The Olanzapine cohort (n = 287 included patients who had olanzapine added to their medication regimen or the dose of olanzapine increased. The Other cohort (n = 209 had a medication other than olanzapine added or the dose adjusted. Changes from baseline in the Young Mania Rating Scale (YMRS, Montgomery Asberg Depression Rating Scale, Beck Anxiety Inventory and SF-12 Health Survey were compared at one month using ANCOVA. Categorical variables at one month for health resource utilization, employment status, abuse/dependency, and the number of suicide attempts were compared using Fisher's Exact test. Patients were followed for one year and a subgroup was evaluated. Results At one month, patients in the Olanzapine cohort recorded a mean reduction in the YMRS of 11.5, significantly greater than the mean reduction in the Other cohort of 9.7 (ANCOVA P = 0.002. The Olanzapine cohort was significantly improved compared to the Other cohort on the scales for depression and anxiety and did not experience the deterioration in physical functioning seen in the Other cohort. No significant differences were detected in health-related quality-of-life measures, employment status, drug abuse/dependency, number of suicide attempts, mental functioning, emergency room visits or inpatient psychiatric hospitalizations. In a subgroup treated for 12 months with a single second generation

  3. 100-Car Naturalistic Driving Study Fact Sheet

    OpenAIRE

    Box, Sherri

    2005-01-01

    The 100-Car Naturalistic Driving Study was recently completed by the Virginia Tech Transportation Institute (VTTI) and sponsored by the National Highway Traffic Safety Administration (NHTSA), Virginia Tech, Virginia Department of Transportation (VDOT), and Virginia Transportation Research Council (VTRC).

  4. 100-car Naturalistic Driving Study tracks drivers for a year

    OpenAIRE

    Box, Sherri

    2005-01-01

    With the primary purpose of collecting pre-crash naturalistic driving data, over 100 individuals volunteered to drive their own (or leased) vehicles with specialized instrumentation for 12 - 13 months in the Northern Virginia/metropolitan DC area. The 100-Car Naturalistic Driving Study was recently completed by the Virginia Tech Transportation Institute (VTTI) and sponsored by the National Highway Traffic Safety Administration (NHTSA), Virginia Tech, Virginia Department of Transportation (VDO...

  5. Texting, Textese and Literacy Abilities: A Naturalistic Study

    Science.gov (United States)

    Drouin, Michelle; Driver, Brent

    2014-01-01

    In this study, we examined texting behaviours, text message characteristics (textese) of actual sent text messages and the relationships between texting, textese and literacy abilities in a sample of 183 American undergraduates. As compared to previous naturalistic and experimental studies with English-speaking adults, both texting frequency and…

  6. The study design of UDRIVE: the Naturalistic Driving Study across Europe for cars, trucks and scooters

    OpenAIRE

    Barnard, Yvonne; Utesch, Fabian; van Nes, Nicole; Eenink, Rob; Baumann, Martin

    2016-01-01

    Purpose: UDRIVE is the first large-scale European Naturalistic Driving Study on cars, trucks and powered two wheelers. The acronym stands for "European naturalistic Driving and Riding for Infrastructure & Vehicle safety and Environment". The purpose of the study is to gain a better understanding of what happens on the road in everyday traffic situations. Methods: The paper describes Naturalistic Driving Studies, a method which provides insight into the actual real-world behaviour of road user...

  7. Adolescent Eating Disorders: Treatment and Response in a Naturalistic Study

    OpenAIRE

    Thompson-Brenner, Heather; Boisseau, Christina L.; Satir, Dana A.

    2010-01-01

    This naturalistic study investigated the treatment and outcome of adolescents with eating disorders (EDs) in the community. Clinicians from a practice-research network provided data on ED symptoms, global functioning, comorbidity, treatment, and outcome for 120 adolescents with EDs. ED “not otherwise specified” was the most common ED diagnosed. After an average of 8 months of treatment, about one third of patients had recovered, with patients with anorexia nervosa showing the most improvement...

  8. Sleep complaints in adolescent depression: one year naturalistic follow-up study

    OpenAIRE

    Urrila, Anna S; Karlsson, Linnea; Kiviruusu, Olli; Pankakoski, Maiju; Pelkonen, Mirjami; Strandholm, Thea; Marttunen, Mauri; ,

    2014-01-01

    Background Sleep complaints are highly prevalent in adolescents suffering from major depressive disorder (MDD). The aims of this study were to describe the longitudinal course of sleep complaints, and to assess the association between sleep complaints and clinical outcome in a sample of adolescents with MDD during naturalistic follow-up. Methods A sample of adolescent outpatients (n = 166; age 13–19 years, 17.5% boys) diagnosed with MDD was followed-up during one year in naturalistic settings...

  9. The value of site-based observations complementary to naturalistic driving observations : a pilot study on the right turn manoeuvre.

    NARCIS (Netherlands)

    Nes, N. van Christoph, M.W.T. Hoedemaeker, M. & Horst, A.R.A. van der

    2013-01-01

    Naturalistic driving studies are increasingly applied in different shapes and sizes. The European project PROLOGUE has investigated the value and feasibility of a large-scale naturalistic driving study in Europe. Within PROLOGUE several pilot studies have been conducted in different countries. The D

  10. The value of site-based observations complematary to naturalistic driving observations : a pilot study on the right turn manoeuvre.

    NARCIS (Netherlands)

    Nes, N. van Christoph, M.W.T. Hoedemaeker, M. & Horst, A.R.A. van der

    2013-01-01

    Naturalistic driving studies are increasingly applied in different shapes and sizes. The European project PROLOGUE has investigated the value and feasibility of a large-scale naturalistic driving study in Europe. Within PROLOGUE several pilot studies have been conducted in different countries. The D

  11. "Our Beloved Cherokee": A Naturalistic Study of Cherokee Preschool Language Immersion

    Science.gov (United States)

    Peter, Lizette

    2007-01-01

    This article contributes to our knowledge of endangered language revitalization by offering a case study of a Cherokee Nation (CN) preschool immersion program named Tsalagi Ageyui, "Our Beloved Cherokee." A naturalistic inquiry into the micro- and macrosociocultural dimensions of reversing Cherokee language shift reveals that, of all CN language…

  12. Pathways to Language: A Naturalistic Study of Children with Williams Syndrome and Children with Down Syndrome

    Science.gov (United States)

    Levy, Yonata; Eilam, Ariela

    2013-01-01

    This is a naturalistic study of the development of language in Hebrew-speaking children with Williams syndrome (WS) and children with Down syndrome (DS), whose MLU extended from 1[multiplied by]0 to 4[multiplied by]4. Developmental curves over the entire span of data collection revealed minor differences between children with WS, children with DS,…

  13. Three year naturalistic outcome study of panic disorder patients treated with paroxetine

    OpenAIRE

    Lowengrub Katherine; Cohen Ami; Iancu Iulian; Dannon Pinhas N; Grunhaus Leon; Kotler Moshe

    2004-01-01

    Abstract Background This naturalistic open label follow-up study had three objectives: 1) To observe the course of illness in Panic Disorder patients receiving long-term versus intermediate-term paroxetine treatment 2) To compare the relapse rates and side-effect profile after long-term paroxetine treatment between patients with Panic Disorder and Panic Disorder with Agoraphobia. 3) To observe paroxetine's tolerability over a 24 month period. Methods 143 patients with panic disorder (PD), wit...

  14. Metabolic syndrome in a cohort of affectively ill patients, a naturalistic study

    DEFF Research Database (Denmark)

    Vinberg, Maj; Madsen, Maiken; Breum, Leif;

    2012-01-01

    at a Mood Disorder Clinic. Methods: Patients were evaluated for the presence of metabolic syndrome (MeS) according to modified NCEP ATP III criteria. Results: Of the 143 patients eligible for participation, 100 patients participated in the study (32% male, mean age 43.6 ± 14.2); the prevalence of MeS was 26......Background: Patients with affective disorder have higher mortality not only because of their affective illness but also because of a higher risk of death from physical illness especially cardiovascular diseases. Aim: To investigate the prevalence in a naturalistic cohort of patient treated...

  15. Canadian export potential for EMF 9 study

    International Nuclear Information System (INIS)

    The National Energy Board staff study of Canadian export potential for EMF-9 considers conventionally producible gas from western Canada, northern Canada and eastern offshore regions. The supply is limited only by the size and physical characteristics of the resource base, economic factors, and the ability of the industry to drill and equip the required number of wells. A potential for additional supply from the very low permeability reservoirs of west-central Alberta and the adjacent sector of northeastern British Columbia is recognized, but because there has been very little experience in producing this gas we do not feel we have enough information to estimate with confidence either the size of the resource base or future levels of production. To the extent that supply from this source does prove to be available, our projections will be understated. Canadian Hunter Exploration, Ltd., in its submission to the EMF-9 study estimates that under the price assumptions of the study production in excess of 1 Tcf/year could be achieved by about the year 2000 from the better quality low permeability sands, those having in situ permeabilities between 0.006 and 0.05 millidarcies. The Canadian Energy Research Institute in a report made public recently includes about 300 Bcf/year of tight sand production by 2005 in its projection of Canadian supply

  16. Are Classroom and Naturalistic Acquisition the Same? A Study of the Classroom Acquisition of German Word Rules.

    Science.gov (United States)

    Ellis, Rod

    1989-01-01

    Reports on a study of the classroom acquisition of German word order by adult learners. Results of the study support the claim that classroom and naturalistic second language acquisition of complex grammatical features such as word order follow similar routes. (50 references) (Author/OD)

  17. Diagnostic accuracy of the Eurotest for dementia: a naturalistic, multicenter phase II study

    Directory of Open Access Journals (Sweden)

    Frank Ana

    2006-04-01

    Full Text Available Abstract Background Available screening tests for dementia are of limited usefulness because they are influenced by the patient's culture and educational level. The Eurotest, an instrument based on the knowledge and handling of money, was designed to overcome these limitations. The objective of this study was to evaluate the diagnostic accuracy of the Eurotest in identifying dementia in customary clinical practice. Methods A cross-sectional, multi-center, naturalistic phase II study was conducted. The Eurotest was administered to consecutive patients, older than 60 years, in general neurology clinics. The patients' condition was classified as dementia or no dementia according to DSM-IV diagnostic criteria. We calculated sensitivity (Sn, specificity (Sp and area under the ROC curves (aROC with 95% confidence intervals. The influence of social and educational factors on scores was evaluated with multiple linear regression analysis, and the influence of these factors on diagnostic accuracy was evaluated with logistic regression. Results Sixteen neurologists recruited a total of 516 participants: 101 with dementia, 380 without dementia, and 35 who were excluded. Of the 481 participants who took the Eurotest, 38.7% were totally or functionally illiterate and 45.5% had received no formal education. Mean time needed to administer the test was 8.2+/-2.0 minutes. The best cut-off point was 20/21, with Sn = 0.91 (0.84–0.96, Sp = 0.82 (0.77–0.85, and aROC = 0.93 (0.91–0.95. Neither the scores on the Eurotest nor its diagnostic accuracy were influenced by social or educational factors. Conclusion This naturalistic and pragmatic study shows that the Eurotest is a rapid, simple and useful screening instrument, which is free from educational influences, and has appropriate internal and external validity.

  18. Canadian retail petroleum markets study

    International Nuclear Information System (INIS)

    A retail petroleum market study was conducted to provide a comprehensive overview of the competitiveness of the downstream petroleum industry in Canada and to set a foundation for effective policy development. The downstream petroleum industry, which includes the petroleum refining and marketing sectors, faces a poor public image, competitive pressures from U.S. and offshore refiners, and a broad range of environmental challenges. In this study, 19 markets representing a wide range of conditions were chosen for a detailed review of outlet economics. A market-by-market and regional comparisons of key competitiveness indicators was made in order to identify market and regional competitive differences as potential issues or opportunities within the industry. The study also included a pump price/margin model and provided a general overview of the retail gasoline sub-sector in terms of infrastructure. A review of prices, margins and demand patterns over the past several years was also undertaken to show the relationship between consumer demand patterns and pump price fluctuations. The study presented 22 findings which led to several conclusions and recommendations regarding the competitiveness of Canada's petroleum marketing sector. Two of the key conclusions were that taxation is a significant factor in the price of retail gasoline (about 50 per cent) and that government intervention into petroleum marketing is likely to be a poor alternative to market-based regulation. 18 tabs., 37 figs

  19. Road Safety Data, Collection, Transfer and Analysis DaCoTa. Workpackage 6, Driver Behaviour Monitoring through Naturalistic Driving: Deliverable 6.2: Part B: Sampling techniques and naturalistic driving study design.

    NARCIS (Netherlands)

    Commandeur, J.J.F.

    2015-01-01

    In this document we provide an overview of sampling and estimation methods that can be used to obtain population values of risk exposure data and safety performance indicators based on naturalistic driving study designs. More specifically, we discuss how to determine the optimal sample size required

  20. Psychodramatic psychotherapy combined with pharmacotherapy in major depressive disorder: an open and naturalistic study

    Directory of Open Access Journals (Sweden)

    Costa Elisabeth Maria Sene

    2006-01-01

    Full Text Available OBJETIVE: Recent literature has highlighted the role of psychotherapy in the treatment of major depressive disorder. Combined therapies comprising both psychotherapy and pharmacotherapy have presented the best results. Although several kinds of psychotherapies have been studied in the treatment of depressive disorders, there remains a lack of data on psychodramatic psychotherapy in the treatment of major depressive disorder. The objective of this study was to evaluate the impact of psychodramatic psychotherapy (in a sample of major depressive disorder patients. METHOD: This is an open, naturalistic, controlled, non-randomized study. Twenty major depressive disorder patients (according to the DSM-IV criteria, under pharmacological treatment for depression, with Hamilton Depression Scale total scores between 7 and 20 (mild to moderate depression, were divided into two groups. Patients in the psychotherapeutic group took part in 4 individual and 24 structured psychodramatic group sessions, whilst subjects in the control group did not participate in this psychodramatic psychotherapy. Both groups were evaluated with the Social Adjustment Scale - Self Report and the Hamilton Depression Scale. RESULTS: Psychotherapeutic group patients showed a significant improvement according to the Social Adjustment Scale - Self Report and the Hamilton Depression Scale scores at endpoint, compared to those of the control group. CONCLUSIONS: Results suggest that individual and group psychodramatic psychotherapy, associated to pharmacological treatment, provides good clinical benefits in the treatment of major depressive disorder.

  1. Moving Perspectives on Patient Competence: A Naturalistic Case Study in Psychiatry.

    Science.gov (United States)

    Ruissen, A M; Abma, T A; Van Balkom, A J L M; Meynen, G; Widdershoven, G A M

    2016-03-01

    Patient competence, defined as the ability to reason, appreciate, understand, and express a choice is rarely discussed in patients with obsessive compulsive disorder (OCD), and coercive measures are seldom used. Nevertheless, a psychiatrist of psychologist may doubt whether OCD patients who refuse treatment understand their disease and the consequences of not being treated, which could result in tension between respecting the patient's autonomy and beneficence. The purpose of this article is to develop a notion of competence that is grounded in clinical practice and corresponds with the experiences of patients with obsessions and/or compulsions. We present a naturalistic case study giving both the patient's and the therapist's perspective based on in-depth interviews and a narrative analysis. The case study shows that competence is not merely an assessment by a therapist, but also a co-constructed reality shaped by the experiences and stories of patient and therapist. The patient, a medical student, initially told her story in a restitution narrative, focusing on cognitive rationality. Reconstructing the history of her disease, her story changed into a quest narrative where there was room for emotions, values and moral learning. This fitted well with the therapist's approach, who used motivational interventions with a view to appealing to the patient's responsibility to deal with her condition. We conclude that in practice both the patient and therapist used a quest narrative, approaching competence as the potential for practical reasoning to incorporate values and emotions. PMID:24902524

  2. A Selective Review of Simulated Driving Studies: Combining Naturalistic and Hybrid Paradigms, Analysis Approaches, and Future Directions

    OpenAIRE

    Calhoun, V D; Pearlson, G.D.

    2011-01-01

    Naturalistic paradigms such as movie watching or simulated driving that mimic closely real-world complex activities are becoming more widely used in functional magnetic resonance imaging (fMRI) studies both because of their ability to robustly stimulate brain connectivity and the availability of analysis methods which are able to capitalize on connectivity within and among intrinsic brain networks identified both during a task and in resting fMRI data. In this paper we review over a decade of...

  3. An Overview of Methods and Key Findings from the NTDS: The Naturalistic Teenage Driving Study: Methods and Selected Findings

    OpenAIRE

    Simons-Morton, Bruce G.; Klauer, C.; Guo, Feng; Lee, S; Ouimet, Marie-Claude; Albert, P.S.; Dingus, Thomas A.

    2014-01-01

    This paper summarizes the findings on novice teenage driving outcomes (e.g., crashes and risky driving behaviors) from the Naturalistic Teenage Driving Study. Method Survey and driving data from a data acquisition system (global positioning system, accelerometers, cameras) were collected from 42 newly licensed teenage drivers and their parents during the first 18 months of teenage licensure; stress responsivity was also measured in teenagers. Result Overall teenage crash and near-crash (CNC) ...

  4. Therapeutic interventions in the treatment of eating disorders: A naturalistic study.

    Science.gov (United States)

    Colli, Antonello; Gentile, Daniela; Tanzilli, Annalisa; Speranza, Anna Maria; Lingiardi, Vittorio

    2016-06-01

    This study used naturalistic data from psychodynamic (PD) and cognitive-behavioral (CB) clinicians in the community to offer a portrait of treatments for eating disorder (ED) patients as provided in everyday clinical practice. The research aims were (1) to examine the therapeutic interventions reported by PD and CB clinicians working with ED patients; and (2) to assess the impact of different variables (such as patient personality styles, ED symptomatology, and therapists' theoretical orientation and experience) on the technique use reported by clinicians. A national sample of PD and CB clinicians (N = 105) completed the Shedler-Westen Assessment Procedure-200 (SWAP-200; Westen & Shedler, 1999a, 1999b) to assess personality disorders of a female patient with EDs in their care, as well as the Comparative Psychotherapy Process Scale-Bulimia Nervosa (CPPS-BN; Thompson-Brenner & Westen, 2005) to describe the characteristic interventions used in their treatments. Results showed that PD clinicians tended to use primarily PD interventions, while CB clinicians employed CB techniques supplementing them with a wider range of PD strategies. However, clinicians from both theoretical orientations used adjunctive treatment techniques for EDs at a similar level. In addition, use of PD interventions was strongly associated with the personality styles of ED patients regardless of therapists' orientation, primarily being used more often when patients exhibited dysregulated and impulsive styles. Conversely, use of CB interventions was primarily related to a clinicians' CB orientation, patients with more explicit symptoms of anorexia nervosa, and negatively related to clinicians' years of experience. The clinical implications of these findings were discussed. (PsycINFO Database Record PMID:27267501

  5. Canadian consumer battery baseline study : final report

    International Nuclear Information System (INIS)

    This report provided information about the estimated number of consumer and household batteries sold, re-used, stored, recycled, and disposed each year in Canada. The report discussed the ways in which different batteries posed risks to human health and the environment, and legislative trends were also reviewed. Data used in the report were obtained from a literature review as well as through a series of interviews. The study showed that alkaline batteries are the most common primary batteries used by Canadians, followed by zinc carbon batteries. However, lithium primary batteries are gaining in popularity, and silver oxide and zinc air button cell batteries are also used in applications requiring a flat voltage and high energy. Secondary batteries used in laptop computers, and cell phones are often made of nickel-cadmium, nickel-metal-hydroxide, and lithium ion. Small sealed lead batteries are also commonly used in emergency lighting and alarm systems. Annual consumption statistics for all types of batteries were provided. Results of the study showed that the primary battery market is expected to decline. Total units of secondary batteries are expected to increase to 38.6 million units by 2010. The report also used a spreadsheet model to estimate the flow of consumer batteries through the Canadian waste management system. An estimated 347 million consumer batteries were discarded in 2004. By 2010, it is expected that an estimated 494 million units will be discarded by consumers. The study also considered issues related to lead, cadmium, mercury, and nickel disposal and the potential for groundwater contamination. It was concluded that neither Canada nor its provinces or territories have initiated legislative or producer responsibility programs targeting primary or secondary consumer batteries. 79 refs., 37 tabs., 1 fig

  6. Evaluating depressive symptoms in mania: a naturalistic study of patients with bipolar disorder

    Directory of Open Access Journals (Sweden)

    Young AH

    2015-04-01

    Full Text Available Allan H Young,1 Jonas Eberhard1,21Institute of Psychiatry, King’s College London, London, UK; 2Corporate Medical Affairs, H. Lundbeck A/S, Copenhagen, DenmarkObjective: This study aimed to evaluate patients with bipolar I disorder (BD-I who have mania with depressive symptoms and who meet the new “with mixed features” specifier of the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5.Method: This prospective, multinational, naturalistic study surveyed psychiatrists and their patients with BD-I from October 2013 to March 2014. Eligible patients had BD-I, had a (current manic episode, and had experienced onset of a manic episode within the previous 3 months. Psychiatrists provided patient information on depressive symptoms (DSM-5 criteria; symptoms of anxiety, irritability, and agitation; suicide attempts; and physician satisfaction with treatment response. Data were stratified according to whether patients met the criteria for the BD-I “with mixed features” specifier of DSM-5 (≥3 depressive symptoms or not, and characteristics were compared between the two subgroups. Patients also self-reported on depressive symptoms using the Mini-International Neuropsychiatric Interview module questionnaire.Results: Overall, 34% of 1,035 patients met the criteria for BD-I “with mixed features,” exhibiting ≥3 depressive symptoms during their current manic episode. This correlated with the matched patient self-reports of depressive symptoms. During their current manic episode, BD-I patients “with mixed features” had more severe symptoms of anxiety, irritability, and agitation (average composite severity score of 4.1 vs 3.4, a higher incidence of suicide attempts (38% vs 9%, and more physician dissatisfaction with treatment response (22% vs 14%, compared to patients with 0–2 depressive symptoms (all P<0.05.Conclusion: This study found that patients with BD-I “with mixed features” (ie, ≥3 depressive symptoms

  7. Three year naturalistic outcome study of panic disorder patients treated with paroxetine

    Directory of Open Access Journals (Sweden)

    Lowengrub Katherine

    2004-06-01

    Full Text Available Abstract Background This naturalistic open label follow-up study had three objectives: 1 To observe the course of illness in Panic Disorder patients receiving long-term versus intermediate-term paroxetine treatment 2 To compare the relapse rates and side-effect profile after long-term paroxetine treatment between patients with Panic Disorder and Panic Disorder with Agoraphobia. 3 To observe paroxetine's tolerability over a 24 month period. Methods 143 patients with panic disorder (PD, with or without agoraphobia, successfully finished a short-term (ie 12 week trial of paroxetine treatment. All patients then continued to receive paroxetine maintenance therapy for a total of 12 months. At the end of this period, 72 of the patients chose to discontinue paroxetine pharmacotherapy and agreed to be monitored throughout a one year discontinuation follow-up phase. The remaining 71 patients continued on paroxetine for an additional 12 months and then were monitored, as in the first group, for another year while medication-free. The primary limitation of our study is that the subgroups of patients receiving 12 versus 24 months of maintenance paroxetine therapy were selected according to individual patient preference and therefore were not assigned in a randomized manner. Results Only 21 of 143 patients (14% relapsed during the one year medication discontinuation follow-up phase. There were no significant differences in relapse rates between the patients who received intermediate-term (up to 12 months paroxetine and those who chose the long-term course (24 month paroxetine treatment. 43 patients (30.1% reported sexual dysfunction. The patients exhibited an average weight gain of 5.06 kg. All patients who eventually relapsed demonstrated significantly greater weight increase (7.3 kg during the treatment phase. Conclusions The extension of paroxetine maintenance treatment from 12 to 24 months did not seem to further decrease the risk of relapse after

  8. Studying the impact of plating on ratings of the food served in a naturalistic dining context.

    Science.gov (United States)

    Michel, Charles; Velasco, Carlos; Fraemohs, Paul; Spence, Charles

    2015-07-01

    An experiment conducted in a naturalistic dining context is reported, in which the impact of different styles of plating on diners' experience of the food was assessed. A hundred and sixty three diners were separated into two groups during a luncheon event held in a large dining room. Each group of diners was served the same menu, with a variation in the visual presentation of the ingredients on the plate. The results revealed that the diners were willing to pay significantly more for the appetizer (a salad), when arranged in an artistically-inspired manner (M = £5.94 vs. £4.10). The main course was liked more, and considered more artistic, when the various elements were presented in the centre of the plate, rather than placed off to one side. The participants also reported being willing to pay significantly more for the centred than for the offset plating (M = £15.35 vs. £11.65). These results are consistent with the claim that people "eat first with their eyes", and that a diner's experience of the very same ingredients can be significantly enhanced (or diminished) simply by changing the visual layout of the food elements of the dish. Results such as these suggest that theories regarding the perception of food can potentially be confirmed (or disconfirmed) outside of the confines of the laboratory (i.e., in naturalistic dining settings). PMID:25728885

  9. A study of Canadian retail gasoline prices

    International Nuclear Information System (INIS)

    Retail gasoline pricing in Canadian markets was examined to demonstrate why retail prices tend to follow one of two distinct patterns and that neither pattern is observable in the wholesale price. In many cities, retail prices are more rigid than wholesale prices, while in other markets, retail prices follow a cyclic pattern not seen in wholesale prices. This study examined why constant prices are observed in some cities, while other cities have cyclic prices. Theoretical justification was given to the argument that prices will remain constant only in markets in which there are only few gasoline companies with a small number of stations, but a large per-station capacity. It was shown that when one firm operates significantly more stations than its rival, a constant cost equilibrium cannot be maintained. However, a cycle equilibrium can be constructed in this case, and also when the two companies are similarly sized. An initial examination of available price, cost and market structure data shows that there is a positive correlation between price stability and concentration. The response of retail prices to wholesale price movements in the presence of a retail price cycle was also examined through the use of a simple model based on the predictions of the above theory. Data for the city of Windsor, Ontario was used for the modelling approach. A new cycle is created by an increase in price whenever the distance between the previous retail price and the current wholesale prices is very small. Retail prices are more responsive to wholesale prices over the increasing portion of the cycle. It was shown that when the asymmetric error correction model of Borenstein, Cameron and Gilbert is estimated, it indicates a more rapid response to wholesale price increases than to decreases. 72 refs., 22 tabs., 8 figs

  10. A naturalistic study of fat talk and its behavioral and affective consequences.

    Science.gov (United States)

    Jones, Michelle D; Crowther, Janis H; Ciesla, Jeffrey A

    2014-09-01

    Fat talk is a style of verbal expression among young women involving negative self-statements, complaints about physical appearance, and weight management. This research used ecological momentary assessment to examine the impact of naturalistic fat talk experiences on body dissatisfaction, body checking, negative affect, and disordered eating behaviors. We examined trait self-objectification as a moderator. Sixty-five female college students completed a baseline questionnaire and responded to questions when randomly prompted by palm pilot devices for five days. Results indicated fat talk is common and associated with greater body dissatisfaction, body checking, negative affect, and disordered eating behaviors. Fat talk participation was associated with greater body checking than overhearing fat talk. Greater trait self-objectification was associated with greater body dissatisfaction and body checking following fat talk. These results suggest that fat talk negatively impacts the cognitions, affect, and behavior of young women and has increased negative effects for women higher in self-objectification. PMID:24976570

  11. Safety-critical event risk associated with cell phone tasks as measured in naturalistic driving studies: A systematic review and meta-analysis.

    Science.gov (United States)

    Simmons, Sarah M; Hicks, Anne; Caird, Jeff K

    2016-02-01

    A systematic review and meta-analysis of naturalistic driving studies involving estimates of safety-critical event risk associated with handheld device use while driving is described. Fifty-seven studies identified from targeted databases, journals and websites were reviewed in depth, and six were ultimately included. These six studies, published between 2006 and 2014, encompass seven sets of naturalistic driver data and describe original research that utilized naturalistic methods to assess the effects of distracting behaviors. Four studies involved non-commercial drivers of light vehicles and two studies involved commercial drivers of trucks and buses. Odds ratios quantifying safety-critical event (SCE) risk associated with talking, dialing, locating or answering, and texting or browsing were extracted. Stratified meta-analysis of pooled odds ratios was used to estimate SCE risk by distraction type; meta-regression was used to test for sources of heterogeneity. The results indicate that tasks that require drivers to take their eyes off the road, such as dialing, locating a phone and texting, increase SCE risk to a greater extent than tasks that do not require eyes off the road such as talking. Although talking on a handheld device did not increase SCE risk, further research is required to determine whether it indirectly influences SCE risk (e.g., by encouraging other cell phone activities). In addition, a number of study biases and quality issues of naturalistic driving studies are discussed. PMID:26724505

  12. A naturalistic study of the directional interpretation process of discrete emotions during high-stakes table tennis matches.

    Science.gov (United States)

    Martinent, Guillaume; Ferrand, Claude

    2009-06-01

    The purpose of this study was to explore the directional interpretation process of discrete emotions experienced by table tennis players during competitive matches by adopting a naturalistic qualitative video-assisted approach. Thirty self-confrontation interviews were conducted with 11 national table tennis players (2 or 3 matches per participants). Nine discrete emotions were identified through the inductive analyses of the participants' transcriptions: anger, anxiety, discouragement, disappointment, disgust, joy, serenity, relief, and hope. Inductive analyses revealed the emergence of 4 categories and 13 themes among the 9 discrete emotions: positive direction (increased concentration, increased motivation, increased confidence, positive sensations, and adaptive behaviors), negative direction (decreased concentration, decreased motivation, too confident, decreased confidence, negative sensations, and maladaptive behaviors), neutral direction (take more risk and take less risk), and no perceived influence on own performance. Results are discussed in terms of current research on directional interpretation and emotions in sport. PMID:19798996

  13. Infant Engagement and Early Vocabulary Development: A Naturalistic Observation Study of Mozambican Infants from 1;1 to 2;1

    Science.gov (United States)

    Mastin, J. Douglas; Voght, Paul

    2016-01-01

    This study analyzes how others engage rural and urban Mozambican infants during naturalistic observations, and how the proportion of time spent in different engagements relates to infants' language development over the second year of life. Using an extended version of Bakeman and Adamson's (1984) categorization of infant engagement, we…

  14. Neuronal encoding of object and distance information: A model simulation study on naturalistic optic flow processing

    Directory of Open Access Journals (Sweden)

    Patrick eHennig

    2012-03-01

    Full Text Available We developed a model of the input circuitry of the FD1 cell, an identified motion-sensitive interneuron in the blowfly’s visual system. The model circuit successfully reproduces the FD1 cell’s most conspicuous property: Its larger responses to objects than to spatially extended patterns. The model circuit also mimics the time-dependent responses of FD1 to dynamically complex naturalistic stimuli, shaped by the blowfly’s saccadic flight and gaze strategy: The FD1 responses are enhanced when, as a consequence of self-motion, a nearby object crosses the receptive field during intersaccadic intervals. Moreover, the model predicts that these object-induced responses are superimposed by pronounced pattern-dependent fluctuations during movements on virtual test flights in a three-dimensional environment with systematic modifications of the environmental patterns. Hence, the FD1 cell is predicted to detect not unambiguously objects defined by the spatial layout of the environment, but to be also sensitive to objects distinguished by textural features. These ambiguous detection abilities suggest an encoding of information about objects - irrespective of the features by which the objects are defined - by a population of cells, with the FD1 cell presumably playing a prominent role in such an ensemble.

  15. Naturalistic Cognition: A Research Paradigm for Human-Centered Design

    Directory of Open Access Journals (Sweden)

    Peter Storkerson

    2010-01-01

    Full Text Available Naturalistic thinking and knowing, the tacit, experiential, and intuitive reasoning of everyday interaction, have long been regarded as inferior to formal reason and labeled primitive, fallible, subjective, superstitious, and in some cases ineffable. But, naturalistic thinking is more rational and definable than it appears. It is also relevant to design. Inquiry into the mechanisms of naturalistic thinking and knowledge can bring its resources into focus and enable designers to create better, human-centered designs for use in real-world settings. This article makes a case for the explicit, formal study of implicit, naturalistic thinking within the fields of design. It develops a framework for defining and studying naturalistic thinking and knowledge, for integrating them into design research and practice, and for developing a more integrated, consistent theory of knowledge in design. It will (a outline historical definitions of knowledge, attitudes toward formal and naturalistic thinking, and the difficulties presented by the co-presence of formal and naturalistic thinking in design, (b define and contrast formal and naturalistic thinking as two distinct human cognitive systems, (c demonstrate the importance of naturalistic cognition in formal thinking and real-world judgment, (d demonstrate methods for researching naturalistic thinking that can be of use in design, and (e briefly discuss the impact on design theory of admitting naturalistic thinking as valid, systematic, and knowable.

  16. Driver hand activity analysis in naturalistic driving studies: challenges, algorithms, and experimental studies

    Science.gov (United States)

    Ohn-Bar, Eshed; Martin, Sujitha; Trivedi, Mohan Manubhai

    2013-10-01

    We focus on vision-based hand activity analysis in the vehicular domain. The study is motivated by the overarching goal of understanding driver behavior, in particular as it relates to attentiveness and risk. First, the unique advantages and challenges for a nonintrusive, vision-based solution are reviewed. Next, two approaches for hand activity analysis, one relying on static (appearance only) cues and another on dynamic (motion) cues, are compared. The motion-cue-based hand detection uses temporally accumulated edges in order to maintain the most reliable and relevant motion information. The accumulated image is fitted with ellipses in order to produce the location of the hands. The method is used to identify three hand activity classes: (1) two hands on the wheel, (2) hand on the instrument panel, (3) hand on the gear shift. The static-cue-based method extracts features in each frame in order to learn a hand presence model for each of the three regions. A second-stage classifier (linear support vector machine) produces the final activity classification. Experimental evaluation with different users and environmental variations under real-world driving shows the promise of applying the proposed systems for both postanalysis of captured driving data as well as for real-time driver assistance.

  17. From the Fur Trade to Acid Rain: A Study of Canadian Natural Resources.

    Science.gov (United States)

    Winans, Linda

    1988-01-01

    Presents a teaching module for upper elementary students that devotes eight class periods of study to Canadian resources. Includes study of the Canadian fur trade, fishing industry, forestry, and the problems caused by acid rain. Includes the unit evaluation. (DB)

  18. Measuring Holocaust Knowledge and Its Impact: A Canadian Case Study

    Science.gov (United States)

    Jedwab, Jack

    2010-01-01

    This article examines the responses of some 1,500 Canadians to a public opinion survey on knowledge of the Holocaust, awareness of genocide, and attitudes towards discrimination and diversity. Based on one of the most detailed surveys conducted to date on Holocaust knowledge, the study found strong correlations between greater reported Holocaust…

  19. A Naturalistic Reading of Sister Carrie

    Institute of Scientific and Technical Information of China (English)

    谈月

    2016-01-01

    Sister Carrie is well known as the works in which naturalism attained maturity in America. Up until now, the relevant research on Dreiser and his Sister Carrie abroad and at home is primarily concerned with the frustration of American dream, the naturalistic thoughts and pessimism. The paper attempts to study it from naturalistic point of view and explain how environmental, hereditary factors and the idea of“survival of the fittest”influence Carrie’s fate.

  20. Canadian study of cancer following multiple fluoroscopies

    International Nuclear Information System (INIS)

    Records of patients treated in Canadian Sanatoria during the period 1930-1952 have been linked with the National Death Index maintained by Statistics Canada to provide fact and cause of death information for the years 1950-1980. Of 31,710 women known to be under observation on January 1, 1950, 13,795 were exposed to fluoroscopy for control of collapse therapy, while the remaining 17,915 were unexposed. The unexposed had the similar mortality from breast cancer to that expected from general population rates. Those exposed to fluoroscopy had increasing mortality with increasing radiation dose to the breast, the best fit to the dose-response curve being a quadratic function. Estimates of risk at doses above 300 rads were largely derived from patients treated in Nova Scotia, where fluoroscopy was administered antero-posterior, as distinct from the more usual postero-antero practiced elsewhere. There is evidence of age-related susceptibility to radiation-induced breast cancer. The risk was maximal for those who first received fluoroscopy in their teens or twenties, but it was similar to expectation for those first exposed at age 30 or more. The latent period from onset of exposure to first increase in the death rate from breast cancer was 15 years for those first exposed at ages 10-24 and 10 years for those first exposed at ages 25 or more. However, these periods coincide with years when mortality from breast cancer normally rises and may therefore not be a true latent period effect. Estimates of predicted excess deaths from breast cancer per million women first exposed at ages 10-29 vary depending on the model used to represent the effect and whether or not data from the Nova Scotia Series are included in the computations

  1. Baseline Face Detection, Head Pose Estimation, and Coarse Direction Detection for Facial Data in the SHRP2 Naturalistic Driving Study

    Energy Technology Data Exchange (ETDEWEB)

    Paone, Jeffrey R [ORNL; Bolme, David S [ORNL; Ferrell, Regina Kay [ORNL; Aykac, Deniz [ORNL; Karnowski, Thomas Paul [ORNL

    2015-01-01

    Keeping a driver focused on the road is one of the most critical steps in insuring the safe operation of a vehicle. The Strategic Highway Research Program 2 (SHRP2) has over 3,100 recorded videos of volunteer drivers during a period of 2 years. This extensive naturalistic driving study (NDS) contains over one million hours of video and associated data that could aid safety researchers in understanding where the driver s attention is focused. Manual analysis of this data is infeasible, therefore efforts are underway to develop automated feature extraction algorithms to process and characterize the data. The real-world nature, volume, and acquisition conditions are unmatched in the transportation community, but there are also challenges because the data has relatively low resolution, high compression rates, and differing illumination conditions. A smaller dataset, the head pose validation study, is available which used the same recording equipment as SHRP2 but is more easily accessible with less privacy constraints. In this work we report initial head pose accuracy using commercial and open source face pose estimation algorithms on the head pose validation data set.

  2. Effectiveness and Predictors of Continuation of Paliperidone Palmitate Long-Acting Injection Treatment: A 12-Month Naturalistic Cohort Study.

    Science.gov (United States)

    Whale, Richard; Pereira, Marco; Cuthbert, Sharon; Fialho, Renata

    2015-10-01

    Antipsychotic long-acting injectable (LAI) medication has an important place as a treatment option in schizophrenia with evolving evidence to support clinical benefit over oral medication. Paliperidone palmitate is recently licensed as an LAI. We studied a naturalistic cohort of all identifiable patients who initiated paliperidone LAI in a specific United Kingdom region (Sussex) from first availability up to January 2013 (n = 179). Favorably, 60% of the cohort continued paliperidone LAI beyond 12 months from initiation. Schizophrenia diagnosis was significantly associated with 12-month continuation on univariate analysis (65% continuation rate at 12 months in this diagnostic subgroup). No baseline variables were identified as independently associated with 12-month continuation. However, fewer inpatient days after initiation (odds ratio [OR], 1.01; 95% confidence interval [CI], 1.003-1.011; P = 0.002), dose adjustment up or down (OR, 3.46; 95% CI, 1.26-9.51; P = 0.016), and a higher maintenance dose (OR, 8.31; 95% CI, 1.84-37.51; P = 0.006) during treatment course were all independently associated with continuation on multivariate analysis. Our findings support the importance of a collaborative approach with the LAI recipient in treatment decision making to enhance treatment effectiveness. PMID:26267419

  3. A Non-Interventional Naturalistic Study of the Prescription Patterns of Antipsychotics in Patients with Schizophrenia from the Spanish Province of Tarragona

    OpenAIRE

    Gaviria, Ana M.; Franco, José G; Aguado, Víctor; Rico, Guillem; Labad, Javier; de Pablo, Joan; Vilella, Elisabet

    2015-01-01

    Background The analysis of prescribing patterns in entire catchment areas contributes to global mapping of the use of antipsychotics and may improve treatment outcomes. Objective To determine the pattern of long-term antipsychotic prescription in outpatients with schizophrenia in the province of Tarragona (Catalonia-Spain). Methods A naturalistic, observational, retrospective, non-interventional study based on the analysis of registries of computerized medical records from an anonymized datab...

  4. Environmental assessment of plug-in hybrid electric vehicles using naturalistic drive cycles and vehicle travel patterns: A Michigan case study

    International Nuclear Information System (INIS)

    Plug-in hybrid electric vehicles (PHEVs) use grid electricity as well as on-board gasoline for motive force. These multiple energy sources make prediction of PHEV energy consumption challenging and also complicate evaluation of their environmental impacts. This paper introduces a novel PHEV energy consumption modeling approach and compares it to a second approach from the literature, each using actual trip patterns from the 2009 National Household Travel Survey (NHTS). The first approach applies distance-dependent fuel efficiency and on-road electricity consumption rates based on naturalistic or real world, driving information to determine gasoline and electricity consumption. The second uses consumption rates derived in accordance with government certification testing. Both approaches are applied in the context of a location-specific case study that focuses on the state of Michigan. The two PHEV models show agreement in electricity demand due to vehicle charging, gasoline consumption, and life cycle environmental impacts for this case study. The naturalistic drive cycle approach is explored as a means of extending location-specific driving data to supplement existing PHEV impact assessments methods. - Highlights: • Travel patterns from survey data are combined with naturalistic drive cycles. • More realistic PHEV energy modeling using these synthesized real-world drive cycles. • Methodology is demonstrated for PHEVs in Michigan but applicable for other regions. • Energy and emissions findings have major implications for PHEV standards and policy

  5. Brief Report: Excessive Alcohol Use Negatively Affects the Course of Adolescent Depression--One Year Naturalistic Follow-Up Study

    Science.gov (United States)

    Meririnne, Esa; Kiviruusu, Olli; Karlsson, Linnea; Pelkonen, Mirjami; Ruuttu, Titta; Tuisku, Virpi; Marttunen, Mauri

    2010-01-01

    The impact of alcohol use on the course of adolescent depression over one-year was investigated by following 197 consecutive adolescent outpatients with unipolar depression in a naturalistic treatment setting. Their baseline alcohol consumption was categorized in three groups: excessive use (defined as weekly drunkenness), regular use (monthly…

  6. Rawls' theory of justice: a naturalistic evaluation(1).

    Science.gov (United States)

    Mun Chan, Ho

    2005-10-01

    This article critically evaluates John Rawls' theory of justice from a naturalistic perspective. The naturalistic approach is increasingly advocated in contemporary epistemology, philosophy of science, and philosophy of logic. Recently this approach has also become more influential in the study of ethics. Based on an experimental study on social justice conducted in Hong Kong, Beijing, and Taipei, this article argues that although Rawls' theory of justice has a naturalistic flavor, it has difficulty in standing up against the scrutiny of empirical tests if he commits himself to a fully fledged naturalistic approach. PMID:16282139

  7. Prophylactic efficacy of lithium, valproic acid, and carbamazepine in the maintenance phase of bipolar disorder: a naturalistic study.

    Science.gov (United States)

    Peselow, Eric D; Clevenger, Steven; IsHak, Waguih W

    2016-07-01

    Mood stabilizers are used clinically for the management of bipolar disorder. Prophylactic therapy with mood stabilizers is the primary treatment for preventing depressive and manic relapses in bipolar patients once they are stabilized. In this study, we examined the relative efficacy of the three most commonly used mood-stabilizing agents: lithium (Li), valproic acid (VPA), and carbamazepine (CBZ), in preventing relapse episodes. A total of 225 patients with bipolar disorder were included in the present analysis. Patients taking Li, VPA, or CBZ were followed up for up to 124 months, until suffering a manic, mixed, or depressive episode (relapse), or until the end of the study/study termination (no relapse), whichever came first. The median unadjusted survival time was 36 months for patients taking VPA, 42 months for patients taking CBZ, and 81 months for patients taking Li. These results indicate that patients stayed longer on Li, suggesting that it might have been better tolerated than either CBZ or VPA. χ-Analysis showed that patients taking Li were significantly less likely to experience relapse during the observational period than patients taking either VPA or CBZ (P<0.05). A Cox regression model showed that the hazard of experiencing relapse was significantly predicted by the total number of depressive (P=0.007) and manic symptoms (P=0.02) assessed before the observation period. In addition, after controlling for symptom covariates, the hazard of experiencing relapse was 1.66 times (95% confidence interval 1.03-2.67) or 66% higher for patients taking VPA compared with patients taking Li (P=0.037). Although the hazard of experiencing relapse was higher for patients taking CBZ compared with those taking Li, the risk was not elevated by a significant amount. Notwithstanding the limitations of the naturalistic design of this study, the differences in relapse prevention and survival time observed in these medications show Li fairing relatively better in

  8. Breast cancer incidence and mortality in the Canadian fluoroscopy study

    International Nuclear Information System (INIS)

    This report describes the formation of the National Cancer Incidence Reporting System in a data base format suitable for computerized record linkage, and the linkage of the data from the Canadian study of cancer following multiple fluoroscopies to that database and to the Canadian National Mortality Data Base between 1940 and 1987. A comprehensive statistical analysis of the breast cancer mortality data occurring among female members of the cohort between 1950 and 1987 with respect to exposure to low-LET radiation is reported, together with a parallel analysis of the breast cancer incidence data between 1975 and 1983. The Canadian fluoroscopy study is a cohort study of tuberculosis patients first treated in Canadian institutions between 1930 and 1952. The present mortality analysis relates to the breast cancer mortality experience between 1950 and 1987. A total of 677 deaths from breast cancer was observed in this period. The most appropriate dose-response relationship appears to be a simple linear one. There is a strong modifying influence of age at first exposure; women first exposed past the age of 30 have little excess risk due to radiation exposure. The breast cancer incidence analysis is based upon 628 cases observed between 1975 and 1983. Again a simple linear model appears to provide an adequate fit to the data. There is a suggestion of time dependency under the additive model, but this is not statistically significant. The results from this latest analysis continue to be reassuring in terms of radiation risk from mammography. (L.L.) 15 refs., figs., tabs

  9. Naturalistic field study of the restart break in US commercial motor vehicle drivers: Truck driving, sleep, and fatigue.

    Science.gov (United States)

    Sparrow, Amy R; Mollicone, Daniel J; Kan, Kevin; Bartels, Rachel; Satterfield, Brieann C; Riedy, Samantha M; Unice, Aaron; Van Dongen, Hans P A

    2016-08-01

    Commercial motor vehicle (CMV) drivers in the US may start a new duty cycle after taking a 34-h restart break. A restart break provides an opportunity for sleep recuperation to help prevent the build-up of fatigue across duty cycles. However, the effectiveness of a restart break may depend on its timing, and on how many nighttime opportunities for sleep it contains. For daytime drivers, a 34-h restart break automatically includes two nighttime periods. For nighttime drivers, who are arguably at increased risk of fatigue, a 34-h restart break contains only one nighttime period. To what extent this is relevant for fatigue depends in part on whether nighttime drivers revert back to a nighttime-oriented sleep schedule during the restart break. We conducted a naturalistic field study with 106 CMV drivers working their normal schedules and performing their normal duties. These drivers were studied during two duty cycles and during the intervening restart break. They provided a total of 1260days of data and drove a total of 414,937 miles during the study. Their duty logs were used to identify the periods when they were on duty and when they were driving and to determine their duty cycles and restart breaks. Sleep/wake patterns were measured continuously by means of wrist actigraphy. Fatigue was assessed three times per day by means of a brief psychomotor vigilance test (PVT-B) and a subjective sleepiness scale. Data from a truck-based lane tracking and data acquisition system were used to compute lane deviation (variability in lateral lane position). Statistical analyses focused on 24-h patterns of duty, driving, sleep, PVT-B performance, subjective sleepiness, and lane deviation. Duty cycles preceded by a restart break containing only one nighttime period (defined as 01:00-05:00) were compared with duty cycles preceded by a restart break containing more than one nighttime period. During duty cycles preceded by a restart break with only one nighttime period, drivers

  10. Stability of childhood anxiety disorder diagnoses: a follow-up naturalistic study in psychiatric care

    OpenAIRE

    Carballo, Juan J.; Baca-Garcia, Enrique; Blanco, Carlos; Perez-Rodriguez, M Mercedes; Jimenez Arriero, Miguel A.; Artes-Rodriguez, Antonio; Rynn, Moira; Shaffer, David; Oquendo, Maria A.

    2009-01-01

    Abstract Few studies have examined the stability of major psychiatric disorders in pediatric psychiatric clinical populations. The objective of this study was to examine the long-term stability of anxiety diagnoses starting with pre-school age children through adolescence evaluated at multiple time points. Prospective cohort study was conducted of all children and adolescents receiving psychiatric care at all pediatric psychiatric clinics belonging to two catchment areas in Madrid,...

  11. A Naturalistic Study of Epistemology: Oceanography Constructed through Oral and Written Discourse.

    Science.gov (United States)

    Kelly, Gregory J.; Chen, Catherine

    The purpose of this paper is to examine how the epistemology of a discipline is interactionally accomplished, acknowledged, and appropriated in a university oceanography course. Drawing from sociological and anthropological studies of scientific communities, this study uses an ethnographic perspective to explore how teachers and students came to…

  12. A Naturalistic Observational Study of Informal Segregation: Seating Patterns in Lectures

    Science.gov (United States)

    Koen, Jennifer; Durrheim, Kevin

    2010-01-01

    In spite of the removal of legislated racial segregation, a number of observational studies in South Africa and elsewhere have shown that "informal," nonlegislated segregation persists in spaces of everyday interaction. Most of these have been case studies of segregation at single sites. The authors seek to quantify segregation in a sample of…

  13. A selective review of simulated driving studies: Combining naturalistic and hybrid paradigms, analysis approaches, and future directions.

    Science.gov (United States)

    Calhoun, V D; Pearlson, G D

    2012-01-01

    Naturalistic paradigms such as movie watching or simulated driving that mimic closely real-world complex activities are becoming more widely used in functional magnetic resonance imaging (fMRI) studies both because of their ability to robustly stimulate brain connectivity and the availability of analysis methods which are able to capitalize on connectivity within and among intrinsic brain networks identified both during a task and in resting fMRI data. In this paper we review over a decade of work from our group and others on the use of simulated driving paradigms to study both the healthy brain as well as the effects of acute alcohol administration on functional connectivity during such paradigms. We briefly review our initial work focused on the configuration of the driving simulator and the analysis strategies. We then describe in more detail several recent studies from our group including a hybrid study examining distracted driving and compare resulting data with those from a separate visual oddball task (Fig. 6). The analysis of these data was performed primarily using a combination of group independent component analysis (ICA) and the general linear model (GLM) and in the various studies we highlight novel findings which result from an analysis of either 1) within-network connectivity, 2) inter-network connectivity, also called functional network connectivity, or 3) the degree to which the modulation of the various intrinsic networks were associated with the alcohol administration and the task context. Despite the fact that the behavioral effects of alcohol intoxication are relatively well known, there is still much to discover on how acute alcohol exposure modulates brain function in a selective manner, associated with behavioral alterations. Through the above studies, we have learned more regarding the impact of acute alcohol intoxication on organization of the brain's intrinsic connectivity networks during performance of a complex, real-world cognitive

  14. Pragmatic meta-analytic studies: learning the lessons from naturalistic evaluations of multiple cases

    OpenAIRE

    Lam, Paul; McNaught, Carmel; Cheng, Kin-Fai

    2008-01-01

    This paper explores the concept of pragmatic meta-analytic studies in eLearning. Much educational technology literature focuses on developers and teachers describing and reflecting on their experiences. Few connections are made between these experiential ‘stories’. The data set is fragmented and offers few generalisable lessons. The field needs guidelines about what can be learnt from such single-case reports. The pragmatic meta-analytic studies described in this paper have two common aspects...

  15. Psychodramatic psychotherapy combined with pharmacotherapy in major depressive disorder: an open and naturalistic study

    OpenAIRE

    Costa Elisabeth Maria Sene; Antonio Rosilda; Soares Márcia Britto de Macedo; Moreno Ricardo Alberto

    2006-01-01

    OBJETIVE: Recent literature has highlighted the role of psychotherapy in the treatment of major depressive disorder. Combined therapies comprising both psychotherapy and pharmacotherapy have presented the best results. Although several kinds of psychotherapies have been studied in the treatment of depressive disorders, there remains a lack of data on psychodramatic psychotherapy in the treatment of major depressive disorder. The objective of this study was to evaluate the impact of psychodram...

  16. Systemic Design: Two Canadian Case Studies

    OpenAIRE

    Alex Ryan; Mark Leung

    2014-01-01

    This paper introduces two novel applications of systemic design to facilitate a comparison of alternative methodologies that integrate systems thinking and design. In the first case study, systemic design helped the Procurement Department at the University of Toronto re-envision how public policy is implemented and how value is created in the broader university purchasing ecosystem. This resulted in an estimated $1.5 million in savings in the first year, and a rise in user retention rates fro...

  17. A Case Study of Canadian Media Education

    OpenAIRE

    Clarence T. K. Chu

    2005-01-01

    This article uses bibliometric analysis to study the evaluation of journals and researchers in the field of library and information science in Taiwan. For journal evaluation, the results show no statistically significant difference between the rankings of the citations cited by top LIS journals and by THCI journals. This suggests that the citation numbers of top LIS journals can be used to evaluate all the LIS journals. The results also show that the relationship between the rankings of JCR L...

  18. Systemic Design: Two Canadian Case Studies

    Directory of Open Access Journals (Sweden)

    Alex Ryan

    2014-12-01

    Full Text Available This paper introduces two novel applications of systemic design to facilitate a comparison of alternative methodologies that integrate systems thinking and design. In the first case study, systemic design helped the Procurement Department at the University of Toronto re-envision how public policy is implemented and how value is created in the broader university purchasing ecosystem. This resulted in an estimated $1.5 million in savings in the first year, and a rise in user retention rates from 40% to 99%. In the second case study, systemic design helped the clean energy and natural resources group within the Government of Alberta to design a more efficient and effective resource management system and shift the way that natural resource departments work together. This resulted in the formation of a standing systemic design team and contributed to the creation of an integrated resource management system. A comparative analysis of the two projects identifies a shared set of core principles for systemic design as well as areas of differentiation that reveal potential for learning across methodologies. Together, these case studies demonstrate the complementarity of systems thinking and design thinking, and show how they may be integrated to guide positive change within complex sociotechnical systems.

  19. One-year follow-up after successful ECT: A naturalistic study in depressed inpatients

    NARCIS (Netherlands)

    T.K. Birkenhäger (Tom); J.-W. Renes (Jan-Willem); E.M. Pluijms (Esther)

    2004-01-01

    textabstractBackground: The aim of this study is to examine both long-term efficacy of electroconvulsive therapy (ECT) and the predictive value of adequate pre-ECT pharmacotherapy and the presence of delusions in relation to post-ECT relapse in patients who suffered from DSM-III-R major depression.

  20. Outcomes for depression and anxiety in primary care and details of treatment : a naturalistic longitudinal study

    NARCIS (Netherlands)

    Prins, Marijn A.; Verhaak, Peter F. M.; Hilbink-Smolders, Mirrian; Spreeuwenberg, Peter; Laurant, Miranda G. H.; van der Meer, Klaas; van Marwijk, Harm W. J.; Penninx, Brenda W. J. H.; Bensing, Jozien M.

    2011-01-01

    Background: There is little evidence as to whether or not guideline concordant care in general practice results in better clinical outcomes for people with anxiety and depression. This study aims to determine possible associations between guideline concordant care and clinical outcomes in general pr

  1. Outcomes for depression and anxiety in primary care and details of treatment: a naturalistic longitudinal study.

    NARCIS (Netherlands)

    Prins, M.A.; Verhaak, P.F.M.; Hilbink-Smolders, M.; Spreeuwenberg, P.; Laurant, M.G.H.; Meer, K. van der; Marwijk, H.W.J. van; Penninx, B.W.J.H.; Bensing, J.M.

    2011-01-01

    Background: There is little evidence as to whether or not guideline concordant care in general practice results in better clinical outcomes for people with anxiety and depression. This study aims to determine possible associations between guideline concordant care and clinical outcomes in general pr

  2. Communal proactive coping strategies among Tamil refugees in Norway: A case study in a naturalistic setting

    OpenAIRE

    Guribye, Eugene; Sandal, Gro Mjeldheim; Oppedal, Brit

    2011-01-01

    Background: An exclusive focus on individual or family coping strategies may be inadequate for people whose major point of concern may be collective healing on a more communal level. Methods: To our knowledge, the current study is the first to make use of ethnographic fieldwork methods to investigate this type of coping as a process in a natural setting over time. Participant observation was employed within a Tamil NGO in Norway between August 2006 and December 2008. Results: T...

  3. Communal proactive coping strategies among Tamil refugees in Norway: A case study in a naturalistic setting

    OpenAIRE

    Guribye Eugene; Sandal Gro; Oppedal Brit

    2011-01-01

    Abstract Background An exclusive focus on individual or family coping strategies may be inadequate for people whose major point of concern may be collective healing on a more communal level. Methods To our knowledge, the current study is the first to make use of ethnographic fieldwork methods to investigate this type of coping as a process in a natural setting over time. Participant observation was employed within a Tamil NGO in Norway between August 2006 and December 2008. Results Tamil refu...

  4. Communal proactive coping strategies among Tamil refugees in Norway: A case study in a naturalistic setting

    OpenAIRE

    Guribye, Eugene; Sandal, Gro Mjeldheim; Oppedal, Brit

    2011-01-01

    Background An exclusive focus on individual or family coping strategies may be inadequate for people whose major point of concern may be collective healing on a more communal level. Methods To our knowledge, the current study is the first to make use of ethnographic fieldwork methods to investigate this type of coping as a process in a natural setting over time. Participant observation was employed within a Tamil NGO in Norway between August 2006 and December 2008. Results Tamil refugees in N...

  5. Towards a Naturalistic Animal Model of Depression? A Study on Horses

    OpenAIRE

    Fureix, Carole; Jego, Patrick; Henry, Séverine; Lansade, Léa; Hausberger, Martine

    2012-01-01

    BackgroundRecent reviews question current animal models of depression and emphasise the need for ethological models of mood disorders based on animals living under natural conditions. Domestic horses encounter chronic stress, including potential stress at work, which can induce behavioural disorders (e.g. “apathy”). Our pioneering study evaluated the potential of domestic horses in their usual environment to become an ethological model of depression by testing this models’ face validity (i.e....

  6. Outcomes for depression and anxiety in primary care and details of treatment: a naturalistic longitudinal study

    Directory of Open Access Journals (Sweden)

    Prins Marijn A

    2011-11-01

    Full Text Available Abstract Background There is little evidence as to whether or not guideline concordant care in general practice results in better clinical outcomes for people with anxiety and depression. This study aims to determine possible associations between guideline concordant care and clinical outcomes in general practice patients with depression and anxiety, and identify patient and treatment characteristics associated with clinical improvement. Methods This study forms part of the Netherlands Study of Depression and Anxiety (NESDA. Adult patients, recruited in general practice (67 GPs, were interviewed to assess DSM-IV diagnoses during baseline assessment of NESDA, and also completed questionnaires measuring symptom severity, received care, socio-demographic variables and social support both at baseline and 12 months later. The definition of guideline adherence was based on an algorithm on care received. Information on guideline adherence was obtained from GP medical records. Results 721 patients with a current (6-month recency anxiety or depressive disorder participated. While patients who received guideline concordant care (N = 281 suffered from more severe symptoms than patients who received non-guideline concordant care (N = 440, both groups showed equal improvement in their depressive or anxiety symptoms after 12 months. Patients who (still had moderate or severe symptoms at follow-up, were more often unemployed, had smaller personal networks and more severe depressive symptoms at baseline than patients with mild symptoms at follow-up. The particular type of treatment followed made no difference to clinical outcomes. Conclusion The added value of guideline concordant care could not be demonstrated in this study. Symptom severity, employment status, social support and comorbidity of anxiety and depression all play a role in poor clinical outcomes.

  7. Outcome of cognitive performances in bipolar euthymic patients after a depressive episode: a longitudinal naturalistic study

    OpenAIRE

    Păunescu, Ramona; Micluţia, Ioana

    2015-01-01

    Background Cognitive functions have been investigated across depressed, manic, hypomanic, mixed and euthymic episodes of bipolar disorder, but the stability or the progression of cognitive impairment is still under research. Objective The purpose of the present study was to assess the outcome of cognitive functions in bipolar patients following a depressive episode, after a 6-month period in the absence of mood symptoms. Method 63 bipolar patients were tested with a battery of neurocognitive ...

  8. Mindfulness Based Stress Reduction for Academic Evaluation Anxiety: A Naturalistic Longitudinal Study

    Science.gov (United States)

    Dundas, Ingrid; Thorsheim, Torbjørn; Hjeltnes, Aslak; Binder, Per Einar

    2016-01-01

    ABSTRACT Mindfulness based stress reduction (MBSR) for academic evaluation anxiety and self-confidence in 70 help-seeking bachelor’s and master’s students was examined. A repeated measures analysis of covariance on the 46 students who completed pretreatment and posttreatment measures (median age = 24 years, 83% women) showed that evaluation anxiety and self-confidence improved. A growth curve analysis with all 70 original participants showed reductions in both cognitive and emotional components of evaluation anxiety, and that reduction continued postintervention. Although more research is needed, this study indicates that MBSR may reduce evaluation anxiety. PMID:27227169

  9. A prospective naturalistic study of antidepressant-induced jitteriness/anxiety syndrome

    Directory of Open Access Journals (Sweden)

    Harada T

    2014-11-01

    Full Text Available Tsuyoto Harada, Ken Inada, Kazuo Yamada, Kaoru Sakamoto, Jun Ishigooka Department of Psychiatry, Tokyo Women’s Medical University School of Medicine, Tokyo, Japan Objective: Patients often develop neuropsychiatric symptoms such as anxiety and agitation after they have started taking an antidepressant, and this is thought to be associated with a potentially increased risk of suicide. However, the incidence of antidepressant-induced jitteriness/anxiety syndrome has not been fully investigated, and little has been reported on its predictors. The aim of this study was to survey the incidence of antidepressant-induced jitteriness/anxiety syndrome and clarify its predictors in a natural clinical setting.Materials and methods: Between January 2009 and July 2012, we prospectively surveyed 301 patients who had not taken any antidepressants for 1 month before presentation, and who were prescribed antidepressants for 1 month after their initial visit. Patients were classified as developing antidepressant-induced jitteriness/anxiety syndrome if they experienced any symptoms of anxiety, agitation, panic attacks, insomnia, irritability, hostility, aggressiveness, impulsivity, akathisia, hypomania, or mania during the first month.Results: Among the 301 patients, 21 (7.0% developed antidepressant-induced jitteriness/anxiety syndrome. Major depressive disorder and a diagnosis of mood disorder in first-degree relatives of patients were significantly associated with induction of antidepressant-induced jitteriness/anxiety syndrome (odds ratio 10.2, P=0.001; odds ratio 4.65, P=0.02; respectively. However, there was no such relationship for sex, age, class of antidepressant, combined use of benzodiazepines, or diagnosis of anxiety disorder.Conclusion: The findings of this study suggest that major depressive disorder and a diagnosis of mood disorder in first-degree relatives may be clinical predictors of antidepressant-induced jitteriness/anxiety syndrome

  10. A naturalistic study of recovering gamblers: What gets better and when they get better.

    Science.gov (United States)

    Rossini-Dib, Danielle; Fuentes, Daniel; Tavares, Hermano

    2015-05-30

    Gambling recovery has typically been assessed through the lens of gambling behavior and its consequences. Little attention has been given to less obvious features of gambling disorder, such as negative affectivity, gambling cognitive distortions, impulsivity, cognitive flexibility, planning, inhibitory control, and decision-making. The current study investigates how gambling treatment affected these variables and if any are related to gambling recovery. One hundred and thirteen patients were assigned to psycho-education and psychiatric treatment. A subset of 48 patients was additionally assigned to cognitive behavioral therapy (CBT). Seventy-two patients were reassessed 6 months after treatment onset. Recovered and non-recovered gamblers did not differ in pre-treatment demographic, gambling, and psychiatric profiles. Three outcome variables were strongly related with gambling recovery: negative affectivity, cognitive distortions and decision-making. Logistic regression identified reduction of gambling cognitive distortions and better performance on decision-making as the best predictors of gambling recovery, regardless of the type of treatment received. Beyond the standard outcome measures for gambling treatment, increased sensitivity to loss and decreased positive expectancies towards gambling are key targets to promote recovery in gambling treatment. PMID:25819171

  11. Academic computer science and gender: A naturalistic study investigating the causes of attrition

    Science.gov (United States)

    Declue, Timothy Hall

    Far fewer women than men take computer science classes in high school, enroll in computer science programs in college, or complete advanced degrees in computer science. The computer science pipeline begins to shrink for women even before entering college, but it is at the college level that the "brain drain" is the most evident numerically, especially in the first class taken by most computer science majors called "Computer Science 1" or CS-I. The result, for both academia and industry, is a pronounced technological gender disparity in academic and industrial computer science. The study revealed the existence of several factors influencing success in CS-I. First, and most clearly, the effect of attribution processes seemed to be quite strong. These processes tend to work against success for females and in favor of success for males. Likewise, evidence was discovered which strengthens theories related to prior experience and the perception that computer science has a culture which is hostile to females. Two unanticipated themes related to the motivation and persistence of successful computer science majors. The findings did not support the belief that females have greater logistical problems in computer science than males, or that females tend to have a different programming style than males which adversely affects the females' ability to succeed in CS-I.

  12. Escitalopram tolerability as mono- versus augmentative therapy in patients with affective disorders: a naturalistic study

    Directory of Open Access Journals (Sweden)

    Dell'Osso B

    2013-02-01

    Full Text Available Bernardo Dell’Osso, Chiara Arici, Cristina Dobrea, Giulia Camuri, Beatrice Benatti, A Carlo AltamuraUniversity of Milan, Department of Psychiatry, Fondazione IRCSS Ca’ Granda, Ospedale Maggiore Policlinico, Milano, ItalyBackground: Escitalopram is a selective serotonin reuptake inhibitor, widely used in the treatment of affective disorders. The purpose of this study was to examine its safety and tolerability, as mono- versus augmentative therapy, in a group of patients with affective disorders.Materials and methods: The sample consisted of 131 patients suffering from different affective disorders, including major depressive disorder, bipolar disorder, and generalized anxiety disorder, who received escitalopram for at least 4 weeks. Data were analyzed on the basis of mono- versus augmentative therapy, as well as age, gender, mean daily dosage, and patterns of combination therapy.Results: Sixty-seven (51.1% patients were treated with monotherapy (mean dose of 11.76 mg/day and 64 (48.9% with augmentative escitalopram (mean dose of 12.81 mg/day. The mean duration of escitalopram treatment was 14 months. The most frequently combined compounds were: other antidepressants (36.5%, mood stabilizers (33.4%, and atypical antipsychotics (30.1%. Side effects were reported in 5.3% of the total sample and the most common were insomnia (2.3%, nausea (2.3%, and dizziness (0.8%. No significant difference, in terms of tolerability, in mono- versus augmentative therapy groups was found. In addition, neither age nor gender was significantly correlated with a greater presence of side effects. Finally, no significant correlation between dosage and side effects was observed.Conclusion: Over a 14-month observation period, escitalopram, either as monotherapy or an augmentative treatment, was found to be well tolerated in a large sample of patients with affective disorders, with an overall low rate of side effects.Keywords: affective disorders, escitalopram

  13. The Impact of Driver Inattention on Near-Crash/Crash Risk: An Analysis Using the 100-Car Naturalistic Driving Study Data

    OpenAIRE

    Klauer, Sheila G; Dingus, Thomas A.; Neale, Vicki L.; Sudweeks, Jeremy D.; Ramsey, D J

    2006-01-01

    The purpose of this report was to conduct in-depth analyses of driver inattention using the driving data collected in the 100-Car Naturalistic Driving Study. An additional database of baseline epochs was reduced from the raw data and used in conjunction with the crash and near-crash data identified as part of the original 100-Car Study to account for exposure and establish near-crash/crash risk. The analyses presented in this report are able to establish direct relationships between driving b...

  14. Children's books and the nature of science: A multisite naturalistic case study of three elementary teachers in the rural southeast

    Science.gov (United States)

    Bricker, Patricia Lynn

    This naturalistic case study describes the efforts of three elementary teachers in a rural southeastern school to use children's books in support of inquiry-based science and specifically addresses issues related to the nature of science. Data were collected through 26 classroom and meeting observations, 16 semi-structured and informal interviews, 35 documents and 76 children's books used by the teachers. Three themes were identified related to the nature of science and the selection and use of children's books in the teachers' second, fourth, and fifth grade classrooms. (1) Science was portrayed as a human endeavor that connects to the lives of people and that involves fascination, passion, and interest; imagination and creativity; values; and diverse views. The collection of books was analyzed to look specifically at race, culture, and gender issues. While women, people of color, and different cultures were represented in the book collection, they were not represented well when considering the collection as a whole. (2) Books and the teachers' use of them supported firsthand investigation of the natural world and the idea that empirical evidence underlies scientific understanding. This theme involved observation and journaling, identification of questions to investigate and procedures to use, reasonable interpretations of results, and inferential thinking. (3) Books helped teach about the durable body of scientific knowledge we have discovered over time. They were used to broaden background knowledge and as references after firsthand investigations. The complexity of science education is revealed in these cases. The teachers were able to artfully balance multiple aspects of the nature of science in their book selection and presentation. Particularly promising aspects include their work to use fiction and poetry to promote connections between imagination, creativity and science and their innovative use of books to help students interpret data and infer. Important

  15. Circulating metals and persistent organic pollutant concentrations in Canadian and non-Canadian born primiparous women from five Canadian centres: Results of a pilot biomonitoring study

    International Nuclear Information System (INIS)

    The developing foetus is thought to be at increased risk from exposure to environmental contaminants; however, developmental exposure data is notably lacking for many contaminants. Moreover, potential regional differences or effect of place of birth on residue levels measured in pregnant women is also unknown. Therefore, as part of a multinational biomonitoring study, 125 primiparous pregnant Canadian women were recruited from five Canadian centres (Vancouver, Calgary, Hamilton, Ottawa, and Halifax). Metals in whole blood and persistent organic pollutants (POPs) in plasma were measured by inductively coupled plasma mass spectrometry (ICPMS) and gas chromatography–mass spectrometry (GCMS), respectively. Of the 125 women recruited to this study, complete data sets were available for 123 of which 103 were Canadian born. Data were analysed by analysis of covariance and linear mixed models using age and body mass index as covariates. The metals cadmium (Cd), cobalt (Co), lead (Pb), nickel (Ni), selenium (Se), and total mercury (Hg) were detected in more than 93% of the samples tested. β-Hexachlorohexane (β-HCH), oxychlordane, trans-nonachlor, 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p′-DDE), polybrominated diphenyl ether (PBDE) congeners (PBDE-153, PBDE-47), polychlorinated biphenyl (PCB) congeners (PCB-138, -153, and ‐180), and the dioxin-like PCB congener PCB-118 were quantified in greater than 70% of the samples tested. Significant differences in the concentrations of Cd, Ni, PCB-153, and p,p′-DDE were found between the centres studied. Furthermore, foreign-born pregnant women had significantly higher concentrations of Cd, β-HCH, PBDE-47, PCB-138, -153, -180, and p,p′-DDE compared to Canadian born pregnant women. Taken together, the data suggest that there are potential regional differences in contaminant body burden and place of birth may also contribute to differences in maternal residue concentrations. -- Highlights: ► Concentrations of

  16. Circulating metals and persistent organic pollutant concentrations in Canadian and non-Canadian born primiparous women from five Canadian centres: Results of a pilot biomonitoring study

    Energy Technology Data Exchange (ETDEWEB)

    Foster, Warren G., E-mail: fosterw@mcmaster.ca [Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario (Canada); Cheung, Anthony P. [University of British Columbia, Vancouver, British Columbia (Canada); Davis, Karelyn [Environmental Health Science and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada (Canada); Graves, Gillian [Dalhousie University, Halifax, Nova Scotia (Canada); Jarrell, John [University of Calgary, Calgary, Alberta (Canada); Leblanc, Alain [Institut national de sante publique, Quebec City, Quebec (Canada); Liang, Chun Lei [Environmental Health Science and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada (Canada); Leech, Tara [Chemicals Surveillance Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario (Canada); Walker, Mark [University of Ottawa, Ottawa, Ontario (Canada); Weber, Jean Philippe [Institut national de sante publique, Quebec City, Quebec (Canada); Van Oostdam, Jay [Chemicals Surveillance Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario (Canada)

    2012-10-01

    The developing foetus is thought to be at increased risk from exposure to environmental contaminants; however, developmental exposure data is notably lacking for many contaminants. Moreover, potential regional differences or effect of place of birth on residue levels measured in pregnant women is also unknown. Therefore, as part of a multinational biomonitoring study, 125 primiparous pregnant Canadian women were recruited from five Canadian centres (Vancouver, Calgary, Hamilton, Ottawa, and Halifax). Metals in whole blood and persistent organic pollutants (POPs) in plasma were measured by inductively coupled plasma mass spectrometry (ICPMS) and gas chromatography-mass spectrometry (GCMS), respectively. Of the 125 women recruited to this study, complete data sets were available for 123 of which 103 were Canadian born. Data were analysed by analysis of covariance and linear mixed models using age and body mass index as covariates. The metals cadmium (Cd), cobalt (Co), lead (Pb), nickel (Ni), selenium (Se), and total mercury (Hg) were detected in more than 93% of the samples tested. {beta}-Hexachlorohexane ({beta}-HCH), oxychlordane, trans-nonachlor, 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p Prime -DDE), polybrominated diphenyl ether (PBDE) congeners (PBDE-153, PBDE-47), polychlorinated biphenyl (PCB) congeners (PCB-138, -153, and -180), and the dioxin-like PCB congener PCB-118 were quantified in greater than 70% of the samples tested. Significant differences in the concentrations of Cd, Ni, PCB-153, and p,p Prime -DDE were found between the centres studied. Furthermore, foreign-born pregnant women had significantly higher concentrations of Cd, {beta}-HCH, PBDE-47, PCB-138, -153, -180, and p,p Prime -DDE compared to Canadian born pregnant women. Taken together, the data suggest that there are potential regional differences in contaminant body burden and place of birth may also contribute to differences in maternal residue concentrations. -- Highlights: Black

  17. Naturalistic Inquiry: Paradigm and Method.

    Science.gov (United States)

    Lotto, Linda S.

    Despite the rhetoric acclaiming it as a new paradigm, educational researchers have tended to treat naturalistic inquiry as a new or alternative method employed within the dominant, rationalistic paradigm. Spokespersons for naturalistic inquiry tend to concentrate on what one does differently rather than how one perceives what one is doing…

  18. Injuries at a Canadian National Taekwondo Championships: a prospective study

    Directory of Open Access Journals (Sweden)

    Pieter Willy

    2004-07-01

    Full Text Available Abstract Background The purpose of this prospective study was to assess the injury rates in male and female adult Canadian Taekwondo athletes relative to total number of injuries, type and body part injured. Methods Subjects (219 males, 99 females participated in the 1997 Canadian National Taekwondo Championships in Toronto, Canada. Injuries were recorded on an injury form to documents any injury seen and treatment provided by the health care team. These data were later used for this study. The injury form describes the athlete and nature, site, severity and mechanism of the injury. Results The overall rate of injuries was 62.9/1,000 athlete-exposures (A-E. The males (79.9/1,000 A-E sustained significantly more injuries than the females (25.3/1,000 A-E. The lower extremities were the most commonly injured body region in the men (32.0 /1,000 A-E, followed by the head and neck (18.3/1,000 A-E. Injuries to the spine (neck, upper back, low back and coccyx were the third most often injured body region in males (13.8/1,000 A-E. All injuries to the women were sustained to the lower extremities. The most common type of injury in women was the contusion (15.2/1,000 A-E. However, men's most common type of injury was the sprain (22.8/1,000 A-E followed by joint dysfunction (13.7/1,000A-E. Concussions were only reported in males (6.9/1,000 A-E. Compared to international counterparts, the Canadian men and women recorded lower total injury rates. However, the males incurred more cerebral concussions than their American colleagues (4.7/1,000 A-E. Conclusions Similar to what was found in previous studies, the current investigation seems to suggest that areas of particular concern for preventive measures involve the head and neck as well as the lower extremities. This is the first paper to identify spinal joint dysfunction.

  19. Naturalistic acquisition in an early language classroom

    Directory of Open Access Journals (Sweden)

    AnneDahl

    2014-04-01

    Full Text Available This study investigated whether it is possible to provide naturalistic second language acquisition (SLA of vocabulary for young learners in a classroom situation without resorting to a classical immersion approach. Participants were 60 first-grade pupils in Norwegian two elementary schools in their first year. The control group followed regular instruction as prescribed by the school curriculum, while the experimental group received increased naturalistic target language input. This entailed extensive use of English by the teacher during English classes, and also during morning meetings and for simple instructions and classroom management throughout the day. Our hypothesis was that it is possible to facilitate naturalistic acquisition through better quality target language exposure within a normal curriculum. The students' English vocabulary knowledge was measured using the Peabody Picture Vocabulary Test, version 4 (PPVT-IV, Dunn & Dunn, 2007, at the beginning and the end of the first year of school. Findings are that 1 early-start second-language (L2 programs in school do not in themselves guarantee vocabulary development in the first year, 2 a focus on increased exposure to the L2 can lead to a significant increase in receptive vocabulary comprehension in the course of only eight months, and 3 even with relatively modest input, learners in such an early-start L2 program can display vocabulary acquisition comparable in some respects to that of younger native children matched on vocabulary size. The overall conclusion is that naturalistic vocabulary acquisition is in fact possible in a classroom setting.

  20. Areas of interest of potential users for naturalistic observation studies. PROmoting real Life Observations for Gaining Understanding of road user behaviour in Europe PROLOGUE, Deliverable D1.2.

    NARCIS (Netherlands)

    Schagen, I.N.L.G. van Craen, S. de Nes, N. van & Eenink, R.

    2010-01-01

    Identification of the interests of potential users is crucial for setting up a useful and broadly supported large-scale naturalistic driving (ND) study. This report describes the results of a survey amongst 72 road transport professionals in Europe from different organisation types that aimed at ide

  1. Reverend Paley's naturalist revival.

    Science.gov (United States)

    McLaughlin, Peter

    2008-03-01

    This paper analyzes the remarkable popularity of William Paley's argument from design among contemporary naturalists in biology and the philosophy of science. In philosophy of science Elliott Sober has argued that creationism should be excluded from the schools not because it is not science but because it is 'less likely' than evolution according to fairly standard confirmation theory. Creationism is said to have been a plausible scientific option as presented by Paley but no longer to be acceptable according to the same standards that once approved it. In biology C. G. Williams and Richard Dawkins have seen in Paley a proto-adaptationist. This paper shows that the historical assumptions of Sober's arguments are wrong and that the philosophical arguments themselves take alternatives to science to be alternatives in science and conflate the null hypothesis, chance, with a competing explanatory hypothesis. It is also shown that the similarity of Paley's adaptationism to that of contemporary biology is not what it is made out to be. PMID:18331952

  2. Naturalistic Evaluation of Programs. Parents' Voice in Parent Education Programs

    OpenAIRE

    Ştefan COJOCARU; Daniela COJOCARU

    2011-01-01

    The study presents some practical means for carrying out a naturalistic evaluation, a process that has resulted, for instance, in the identification of the profile of the parent educator as defined by the parents attending parent education classes as part of the program “How to become better parents”, implemented by Holt Romania with the support of UNICEF Country Office. Exploring parents’ voices is an advantage in naturalistic evaluation when trying to identify some essential aspects of the ...

  3. Teaching Writing in Canadian Middle Grades Classrooms: A National Study

    Science.gov (United States)

    Peterson, Shelly Stagg; McClay, Jill Kedersha; Main, Kristin

    2010-01-01

    This article reports the results of interview research examining writing instruction and assessment practices in 216 Grades 4-8 classrooms across the 10 Canadian provinces and 2 (of 3) territories. Researchers found that participating teachers scheduled daily time for writing, either in language arts classes or through integrating writing…

  4. Wuskwatim generation project : Canadian Environmental Assessment Act comprehensive study report

    International Nuclear Information System (INIS)

    This study report described the plan by Manitoba Hydro and the Nisichawayasihk Cree Nation (NCN) to construct a new 200- megawatt (MW) generating station at Taskinigup Falls on the Burntwood River, near the outlet of Wuskwatim Lake. This hydroelectric power project will allow Manitoba Hydro to meet its projected energy needs within the next two decades as identified in its 2002/03 Power Resource Plan. It will also allow Manitoba Hydro and NCN to obtain additional export revenues and profits by advancing the in-service date of the Project from 2020 to 2009. A formal environmental assessment is required under the Canadian Environmental Assessment Act (CEAA) because Fisheries and Oceans Canada (DFO) has determined that the Project would cause fish habitat losses requiring an authorization under the Fisheries Act. Many of the structures to be built in navigable waters would also require formal approval under the Navigable Waters Protection Act (NWPA), which has prompted this application of the CEAA. This environmental assessment report has been prepared by DFO in consultation with Transport Canada and other federal authorities concerned. It provides a summary of the Wuskwatim Generation Project and the environment in which it will be built and operated. In addition, the results of public consultations are discussed. It presents an assessment of the Project's influence on fish and fish habitat, birds, species at risk, human health (local air quality, quality of drinking water and consumption of fishery products), navigation, use of renewable resources, and current use of lands and resources for traditional purposes by Aboriginal persons (hunting, trapping, gathering, subsistence fishing and heritage sites). It was concluded that the proposed Project, as defined by the scope of the study, is not likely to cause significant adverse environmental effects. 45 refs., 5 tabs., 13 figs., 3 appendices

  5. Naturalistic acquisition in an early language classroom.

    Science.gov (United States)

    Dahl, Anne; Vulchanova, Mila D

    2014-01-01

    This study investigated whether it is possible to provide naturalistic second language acquisition (SLA) of vocabulary for young learners in a classroom situation without resorting to a classical immersion approach. Participants were 60 first-grade pupils in two Norwegian elementary schools in their first year. The control group followed regular instruction as prescribed by the school curriculum, while the experimental group received increased naturalistic target language input. This entailed extensive use of English by the teacher during English classes, and also during morning meetings and for simple instructions and classroom management throughout the day. Our hypothesis was that it is possible to facilitate naturalistic acquisition through better quality target language exposure within a normal curriculum. The students' English vocabulary knowledge was measured using the Peabody Picture Vocabulary Test, version 4 (PPVT-IV, Dunn and Dunn, 2007a), at the beginning and the end of the first year of school. Findings are that (1) early-start second-language (L2) programs in school do not in themselves guarantee vocabulary development in the first year, (2) a focus on increased exposure to the L2 can lead to a significant increase in receptive vocabulary comprehension in the course of only 8 months, and (3) even with relatively modest input, learners in such an early-start L2 program can display vocabulary acquisition comparable in some respects to that of younger native children matched on vocabulary size. The overall conclusion is that naturalistic vocabulary acquisition is in fact possible in a classroom setting. PMID:24860518

  6. Prospective, naturalistic study of open-label OROS methylphenidate treatment in Chinese school-aged children with attention-deficit/hyperactivity disorder

    Institute of Scientific and Technical Information of China (English)

    ZHENG Yi; GONG Mei-en; YIN Qing-yun; MAI Jian-ning; JING Jin; LUO Xiang-yang; MA Hong-wei; LI Hai-bo; XIE Ling; LI Yan; Kuang Gui-fang; WANG Yu-feng; YI Ming-ji; WANG Feng; ZHU Xiao-hua; YAO Yah-bin; QIN Jiong; WANG Li-wen; ZOU Li-ping; JIN Xing-ming; XU Tong; WANG Yi; QI Yuan-li

    2011-01-01

    Background Attention deficit hyperactivity disorder (ADHD) is one of the most common mental disorders during childhood,characterized by the core symptoms of hyperactivity,impulsivity and inattention and puts great burden on children themselves,their families and the society.Osmotic release oral system methylphenidate (OROS-MPH) is a once-daily controlled-release formulation developed to overcome some of the limitations associated with immediate-release methylphenidate (IR-MPH).It has been marketed in China since 2005 but still lacks data from large-sample clinical trials on efficacy and safety profiles.The aim of this study was to evaluate the effectiveness and safety of OROS-MPH in children aged 6 to 16 years with ADHD under naturalistic clinical setting.Methods This 6-week,multi-center,prospective,open-label study enrolled 1447 ADHD children to once-daily OROS-MPH (18 mg,36 mg or 54 mg) treatment.The effectiveness measures were parent-rated Inattention and Overactivity With Aggression (IOWA) Conners I/O and O/D subscales,physician-rated CGI-I and parent-rated global efficacy assessment scale.Blood pressure,pulse rate measurement,adverse events (AEs) and concomitant medications and treatment review were conducted by the investigator and were served as safety measures.Results A total of 1447 children with ADHD (mean age (9.52±2.36) years) were enrolled in this trial.Totally 96.8%children received an OROS-MPH modal dose of 18 mg,3.1% with 36 mg and 0.1% with 54 mg at the endpoint of study.The parent IOWA Conners I/O score at the end of week 2 showed statistically significant (P <0.001) improvement with OROS-MPH (mean:6.95±2.71) versus the score at baseline (10.45±2.72).The change in the parent IOWA Conners O/D subscale,CGI-I and parent-rated global efficacy assessment scale also supported the superior efficacy for OROS-MPH treatment.Fewer than half of 1447 patients (511 (35.3%)) reported AEs,and the majority of the events reported were mild (68.2

  7. Ondansetron reduces naturalistic drinking in non-treatment seeking alcohol dependent individuals with the LL 5′-HTTLPR genotype: a laboratory study

    Science.gov (United States)

    Kenna, George A.; Zywiak, William H.; Swift, Robert M.; McGeary, John E.; Clifford, James S.; Shoaff, Jessica R.; Vuittonet, Cynthia; Fricchione, Samuel; Brickley, Michael; Beaucage, Kayla; Haass-Koffler, Carolina L.; Leggio, Lorenzo

    2014-01-01

    Background One hypothesis suggests that the differential response to ondansetron and serotonin specific re-uptake inhibitors (SSRIs) may be due to a functional polymorphism of the 5′-HTTLPR promoter region in SLC6A4, the gene that codes for the serotonin transporter (5-HTT). The LL 5′-HTTLPR genotype is postulated to be specifically sensitive to the effects of ondansetron with SS/SL 5′-HTTLPR genotypes sensitive to SSRIs. This study tests this hypothesis by matching non-treatment seeking alcohol dependent (AD) individuals with LL genotype to ondansetron and SS/SL genotypes to the SSRI sertraline, and mis-matching them assessing naturalistic and bar-laboratory alcohol drinking. Methods Seventy-seven AD individuals were randomized to one of two counterbalanced arms to receive sertraline 200mg/day or ondansetron 0.5 mg/day for three weeks followed by an alcohol self-administration experiment (ASAE), then received placebo for three weeks followed by a second ASAE. Individuals then received the alternate drug for three weeks followed by a third ASAE. Drinks per drinking day (DDD with drinks in SDUs) for 7 days prior to each ASAE and milliliters consumed during each ASAE were the primary outcomes. Results Fifty-five participants completed the study. The genotype x order interaction was significant [F(1,47) = 8.42, p = .006] for DDD. Three ANCOVAs were conducted for DDD during the week before each ASAE. Ondansetron compared to sertraline resulted in a significant reduction in DDD during the week before the first [F(1,47) = 7.64, p = .008] but not the third ASAE. There was no difference in milliliters consumed during each ASAE. Conclusion This study modestly supports the hypothesis that ondansetron may reduce DDD in AD individuals with the LL genotype as measured naturalistically. By contrast there was no support that ondansetron reduces drinking during the ASAEs or that sertraline reduces alcohol use in individuals who have SS/SL genotypes. We provide limited

  8. Getting Real: A Naturalistic Methodology for Using Smartphones to Collect Mediated Communications

    OpenAIRE

    Lin Zhong; Ahmad Rahmati; Shepard, Clayton W.; Philip Kortum; Chad C. Tossell

    2012-01-01

    This paper contributes an intentionally naturalistic methodology using smartphone logging technology to study communications in the wild. Smartphone logging can provide tremendous access to communications data from real environments. However, researchers must consider how it is employed to preserve naturalistic behaviors. Nine considerations are presented to this end. We also provide a description of a naturalistic logging approach that has been applied successfully to collecting mediated com...

  9. Design and implementation of the canadian kidney disease cohort study (CKDCS): A prospective observational study of incident hemodialysis patients

    OpenAIRE

    Opgenorth Dawn; Cembrowski George; Holmes Daniel; Zimmerman Deborah; Chan Christopher; Gill John; Klarenbach Scott; Hemmelgarn Brenda; Thadhani Ravi; Bello Aminu K; Sibrian Rafael; Karkhaneh Mohammad; Tiv Sophanny; Wiebe Natasha; Tonelli Marcello

    2011-01-01

    Abstract Background Many nephrology observational studies use renal registries, which have well known limitations. The Canadian Kidney Disease Cohort Study (CKDCS) is a large prospective observational study of patients commencing hemodialysis in five Canadian centers. This study focuses on delineating potentially reversible determinants of adverse outcomes that occur in patients receiving dialysis for end-stage renal disease (ESRD). Methods/Design The CKDCS collects information on risk factor...

  10. Long-term efficacy and safety of treatment with stimulants and atomoxetine in adult ADHD: a review of controlled and naturalistic studies.

    Science.gov (United States)

    Fredriksen, Mats; Halmøy, Anne; Faraone, Stephen V; Haavik, Jan

    2013-06-01

    Attention-deficit/hyperactivity disorder (ADHD) is a common disorder of childhood that often persists into adulthood. Although stimulant medications are recommended as the first-line treatment for ADHD because of their documented short-term effects in children and adults, less is known about their effects on long-term outcome in adults. Here we review the long-term efficacy and safety of the stimulant drugs methylphenidate and amphetamine, as well as the related compound atomoxetine. We performed a systematic review to identify direct and indirect effects of stimulant therapy on long-term outcome in adults. Five randomized controlled trials (RCTs), and 10 open-label extension studies of initial short-term RCTs, with total follow-up of at least 24weeks, were identified. All these RCTs found that medication was significantly more efficacious than placebo in treating ADHD in adults, and the extension studies showed that this favorable effect of medication was maintained during the open-label follow-up period. However, since the maximum duration of these pharmacological trials was 4years, we also reviewed 18 defined naturalistic longitudinal and cross-sectional studies, to provide more information about longer term functional outcomes, side effects and complications. These observational studies also showed positive correlations between early recognition of the disorder, stimulant treatment during childhood and favorable long-term outcome in adult ADHD patients. In conclusion, stimulant therapy of ADHD has long-term beneficial effects and is well tolerated. However, more longitudinal studies of long duration should be performed. In addition, the ethical issues involved in performing double blind RCTs of many years duration should be further explored. PMID:22917983

  11. Canadian retail petroleum markets study : a review of competitiveness in the Canadian refined petroleum marketing industry

    International Nuclear Information System (INIS)

    A retail petroleum market study was conducted to provide a comprehensive overview of the competitiveness of the downstream petroleum industry in Canada, as well as to provide a foundation for effective policy development. A model which illustrates the interrelationships between the many stakeholders who receive revenue from the sale of gasoline was presented. It was shown that although there has been an upward trend in world crude prices since 1991, both refiners and marketers have experienced a decline in margins due to price competition at the rack and at the retail pump. Government intervention into petroleum marketing was considered to be of questionable value and a poor alternative to market-based regulation. In this study, 19 markets representing a broad range of conditions, were chosen for a detailed review of outlet economics. Market-by-market and regional comparisons of key competitiveness indicators were reviewed and discussed. Improving public understanding and awareness of competition in the petroleum marketing sector and developing cooperative industry research into marketing sector competitive issues were recommended. 7 refs., 15 tabs., 37 figs

  12. Implication of Integrative Treatment Strategies for Real-Life Geriatric Patients with Multiple, Chronic Illnesses: A 60-Month Follow-Up of a Naturalistic Study

    Directory of Open Access Journals (Sweden)

    Gjumrakch Aliev

    2015-03-01

    Full Text Available Neurodegeneration [Stroke and Alzheimer disease (AD] is fastly becoming one of the leading causes of age-associated disability, dementia, and death. In addition, the Centers for Disease Control and Prevention (CDC and the National Center for Health Statistics recently reported that AD has surpassed diabetes as a leading cause of death and is now considered the sixth-leading cause of death in the United States. Unfortunately, currently no effective treatments are available against this devastating disease. In the past we have shown the preservation and improvement of cognitive tasks in depressed and demented patients after 24 and 36 months of combined pharmacological and non- pharmacological treatment. Here we present the results of our ongoing, naturalistic study, in the same outpatient setting, at the 60 month follow up. The study group consisted of 156 medically ill, physically-disabled patients with mild to moderate dementia and depression. Patients were treated with antidepressants, cholinesterase inhibitors, and NMDA antagonists, along with their regular medication regimen. Non-pharmacological intervention was centered on a home-based program of physical and cognitive exercises as well as with vitamins and supplements (multivitamins, vitamin E, L-methylfolate, alpha-lipoic acid, acetyl-l-carnitine, omega-3, and coenzyme Q-10 and diet modification. Cognitive assessments were performed yearly. After 60 months of treatment, performance of all tasks remained at or above baseline. The MMSE, Cognistat–Attention, Cognistat–Judgment, and RFFT - Total Unique Designs demonstrated significant improvement. Our results, for the first time, demonstrate arrest in cognitive decline in demented/depressed patients with multiple medical co-morbidities for 60 months. Future investigations addressing the application of a combined, integrative treatment models in clinical practices are warranted.

  13. Guide to International Studies at Canadian Universities = Guide pour les etudes internationales aux universites Canadiennes.

    Science.gov (United States)

    Johnston, Pari, Ed.

    Included in this guide is a list of 65 Canadian universities and colleges offering programs in international and Native studies. Programs encompass area studies, international development, international relations, international business, international law, international agriculture, and international and comparative education. Also included are…

  14. Higher pretreatment 5-HT1A receptor binding potential in bipolar disorder depression is associated with treatment remission: a naturalistic treatment pilot PET study.

    Science.gov (United States)

    Lan, Martin J; Hesselgrave, Natalie; Ciarleglio, Adam; Ogden, R Todd; Sullivan, Gregory M; Mann, J John; Parsey, Ramin V

    2013-11-01

    Bipolar disorder is a major cause of disability and a high risk for suicide. The pathophysiology of the disorder remains largely unknown. Medication choice for bipolar depression patients involves trial and error. Our group reported previously that brain serotonin 1A (5-HT(1A)) receptor binding measured by positron emission tomography (PET) is higher in bipolar depression. We now investigated whether pretreatment 5-HT(1A) levels correlates with antidepressant medication outcome. Forty-one medication-free DSM-IV diagnosed, bipolar patients in a major depressive episode had brain PET scans performed using [(11)C]WAY-100635 and a metabolite corrected arterial input function. The patients then received naturalistic psychopharmacologic treatment as outpatients and a follow up Hamilton Depression Rating Scale (HDRS) after 3 months of treatment. Patients with 24 item HDRS scores less than 10 were considered to have remitted. A linear mixed effects model was used to compare BP(F) (binding potential, proportional to the total number of available receptors) in 13 brain regions of interest between remitters and nonremitters. Thirty-four patients completed 3 months of treatment and ratings; 9 had remitted. Remitters and nonremitters did not differ in age, sex, or recent medication history with serotonergic medications. Remitters had higher [(11)C]WAY-100635 BP(F) across all brain regions compared with nonremitters (P = 0.02). Higher pretreatment brain 5-HT(1A) receptor binding was associated with remission after 3 months of pharmacological treatment in bipolar depression. Prospective treatment studies are warranted to determine whether this test predicts outcome of specific types of treatment. PMID:23720414

  15. A Naturalistic Study of the Effects of Prosocial Television and Environmental Variables on the Behavior of Young Children. Final Report.

    Science.gov (United States)

    Friedrich, Lynette K.; Stein, Aletha H.

    A study sought to determine (1) whether a television program designed to enhance personal, social, and emotional development can have positive effects on children's behavior and, (2) what elements in a child's environment produce the greatest positive effects. Two components of the environment were studied: (1) training of the adult care-givers to…

  16. Planning for End-of-Life Care: Findings from the Canadian Study of Health and Aging

    Science.gov (United States)

    Garrett, Douglas D.; Tuokko, Holly; Stajduhar, Kelli I.; Lindsay, Joan; Buehler, Sharon

    2008-01-01

    Steps involved in formalizing end-of-life care preferences and factors related to these steps are unclear in the literature. Using data from the third wave of the Canadian Study of Health and Aging (CSHA-3), we examined the relations between demographic and health predictors, on the one hand, and three outcomes, on the other (whether participants…

  17. The Prerequisites To Ukrainian Students Participation In Study Abroad Programs At The Canadian Universities And Colleges

    Directory of Open Access Journals (Sweden)

    Zhukovskyi Vasyl

    2015-06-01

    Full Text Available The problem of outbound mobility of Ukrainian students has been presented in the paper. The data regarding the number of Ukrainian students studying in Canada has been pointed out. This paper examines “push-pull” factors which motivate Ukrainian students to seek higher education overseas and factors which attract Ukrainian students to Canadian higher education establishments.

  18. Do Children Who Bully Their Peers Also Play Violent Video Games? A Canadian National Study

    Science.gov (United States)

    Dittrick, Crystal J.; Beran, Tanya N.; Mishna, Faye; Hetherington, Ross; Shariff, Shaheen

    2013-01-01

    The study examined whether children who bully others are likely to prefer playing video games that are rated high in maturity and violence. A stratified random sample of Canadian children ages 10 to 17 years from the provinces of Canada was obtained. Parents (n = 397) and their children (n = 492) completed an online survey of children's…

  19. Recent acoustic studies of western Canadian continental margin

    Energy Technology Data Exchange (ETDEWEB)

    Bornhold, B.D.; Brandon, M.T.; Clowes, R.M.; Currie, R.G.; Davis, E.E.; Hussong, D.M.; Hyndman, R.D.; Riddihough, R.P.; Rogers, G.C.; Yorath, C.J.

    1986-07-01

    A regional survey of the western Canadian continental margin from the central Queen Charlotte Island, 52/sup 0/40'N, to the Strait of Juan de Fuca, 47/sup 0/40'N, has been completed with the acoustic imaging system SeaMARC II. These data, combined with single-channel and multichannel seismic reflection data, reveal many new insights concerning the deep structure of the subduction margin off Vancouver Island. Clearly evident in the imagery are the deformation of sediments at the base of the slope, the surface expression of seismically active faults, the mass wasting of sediment frequently observed at the base of the slope, and the erosional canyons and sediment transport channels on the slope and adjacent abyssal plain. The variability in the surficial and deep structures along the length of the margin is great and corresponds well with the postulated variations in the local ocean/continent motion vectors: motion along the southern Queen Charlotte Islands margin is primarily transform (about 55 mm/year) with a small component of convergence (about 10 mm/year); motion south of the triple junction at the Wilson Knolls is convergent but at a very slow rate (about 10 mm/year); and motion along the central and southern Vancouver Island margin is nearly orthogonal to the coast and more rapid (about 40 mm/year).

  20. Stress: a naturalistic proposal

    OpenAIRE

    María De Lourdes Rodríguez Campuzano

    2013-01-01

    Some of the stress related topics, especially from the conceptual framework of Lazarus and Folkman are reviewed on this work. It is sustained that this approach is dualistic and that the research made from this view is made on the basis of morphological criteria that don’t allow studying important elements of this kind of behavior. From an interbehavioral approach three functional criteria are proposed to study this phenomenon: the functional nature of situations, aptitude levels of behavior,...

  1. The Efficacy and Safety of Clonazepam in Patients with Anxiety Disorder Taking Newer Antidepressants: A Multicenter Naturalistic Study

    OpenAIRE

    Wang, Sheng-Min; Kim, Jung-Bum; Sakong, Jeong Kyu; Suh, Ho-Suk; Oh, Kang Seob; Woo, Jong-Min; Yoo, Sang-Woo; Lee, Sang Min; Lee, Sang-Yeol; Lim, Se-Won; Cho, Seong Jin; Chee, Ik-Seung; Chae, Jeong-Ho; Hong, Jin Pyo; Lee, Kyoung-Uk

    2016-01-01

    Objective This study compared the efficacy and tolerability of clonazepam with other benzodiazepines in patients with anxiety disorders. Methods Inclusion criteria were as follows: age >20 years, diagnosis of anxiety disorder according to the Diagnostic and Statistical Manual of Mental Disorders 4th edition, text revision (DSM-IV-TR) criteria, taking only one type of antidepressant, and prescribed one of three oral benzodiazepines (alprazolam, clonazepam, or lorazepam). At baseline and week 6...

  2. Predictors of antipsychotic monotherapy with olanzapine during a 1-year naturalistic study of schizophrenia patients in Japan

    OpenAIRE

    Ye W; Ascher-Svanum H; Flynn JA; Tanji Y; Takahashi M

    2012-01-01

    Wenyu Ye1, Haya Ascher-Svanum2, Jennifer A Flynn3, Yuka Tanji3, Michihiro Takahashi3,41Lilly Suzhou Pharmaceutical Co, Shanghai, People's Republic of China; 2Eli Lilly and Company, Indianapolis, IN, USA; 3Lilly Research Laboratories Japan, Eli Lilly Japan K.K., Kobe, 4Terauchi-Takahashi Psychiatric Clinic, Ashiya, JapanPurpose: Although expert guidelines for the treatment of schizophrenia recommend antipsychotic monotherapy, the use of antipsychotic polypharmacy is common. This study ...

  3. The Efficacy and Safety of Clonazepam in Patients with Anxiety Disorder Taking Newer Antidepressants: A Multicenter Naturalistic Study

    Science.gov (United States)

    Wang, Sheng-Min; Kim, Jung-Bum; Sakong, Jeong Kyu; Suh, Ho-Suk; Oh, Kang Seob; Woo, Jong-Min; Yoo, Sang-Woo; Lee, Sang Min; Lee, Sang-Yeol; Lim, Se-Won; Cho, Seong Jin; Chee, Ik-Seung; Chae, Jeong-Ho; Hong, Jin Pyo; Lee, Kyoung-Uk

    2016-01-01

    Objective This study compared the efficacy and tolerability of clonazepam with other benzodiazepines in patients with anxiety disorders. Methods Inclusion criteria were as follows: age >20 years, diagnosis of anxiety disorder according to the Diagnostic and Statistical Manual of Mental Disorders 4th edition, text revision (DSM-IV-TR) criteria, taking only one type of antidepressant, and prescribed one of three oral benzodiazepines (alprazolam, clonazepam, or lorazepam). At baseline and week 6, clinical benefit was evaluated using the Clinical Global Impression-Severity Scale (CGI-S), Clinical Global Impression-Anxiety Scale (CGI-anxiety), and Clinical Global Impression-Sleep Scale (CGI-sleep). Results Among 180 patients, no differences in demographic characteristics among the three benzodiazepine groups were noted. After six weeks of treatment, all benzodiazepine groups showed significant improvements in CGI-S, CGI-anxiety, and CGI-sleep scores (p<0.001). There were no differences in mean changes in CGI-S, CGI-anxiety and CGI-sleep among the three benzodiazepine groups. The incidence of side effects was significantly lower in the clonazepam group than with the other benzodiazepines. The incidences of adverse events for the clonazepam, alprazolam, and lorazepam groups were 26.7% (n=20), 48.4% (n=31), and 43.9% (n=18), respectively. Conclusion The present study suggests that clonazepam is as efficacious as other benzodiazepines for the treatment of various anxiety disorders. Furthermore, the safety profile of clonazepam was superior to the other benzodiazepines in this study. PMID:27121429

  4. A candidate gene investigation of methylphenidate response in adult attention-deficit/hyperactivity disorder patients: results from a naturalistic study.

    Science.gov (United States)

    Hegvik, Tor-Arne; Jacobsen, Kaya Kvarme; Fredriksen, Mats; Zayats, Tetyana; Haavik, Jan

    2016-08-01

    Attention-deficit/hyperactivity disorder (ADHD) is a common childhood onset neuropsychiatric disorder with a complex and heterogeneous symptomatology. Persistence of ADHD symptoms into adulthood is common. Methylphenidate (MPH) is a widely prescribed stimulant compound that may be effective against ADHD symptoms in children and adults. However, MPH does not exert satisfactory effect in all patients. Several genetic variants have been proposed to predict either treatment response or adverse effects of stimulants. We conducted a literature search to identify previously reported variants associated with MPH response and additional variants that were biologically plausible candidates for MPH response. The response to MPH was assessed by the treating clinicians in 564 adult ADHD patients and 20 genetic variants were successfully genotyped. Logistic regression was used to test for association between these polymorphisms and treatment response. Nominal associations (p nominal significance level (OR 0.560, 95 % CI 0.329-0.953, p = 0.033). However, this finding was not affirmed in the meta-analysis. No genetic variants revealed significant associations after correction for multiple testing (p < 0.00125). Our results suggest that none of the studied variants are strong predictors of MPH response in adult ADHD as judged by clinician ratings, potentially except for rs1800544. Consequently, pharmacogenetic testing in routine clinical care is not supported by our analyses. Further studies on the pharmacogenetics of adult ADHD are warranted. PMID:27091191

  5. Predictors of antipsychotic monotherapy with olanzapine during a 1-year naturalistic study of schizophrenia patients in Japan

    Directory of Open Access Journals (Sweden)

    Ye W

    2012-01-01

    Full Text Available Wenyu Ye1, Haya Ascher-Svanum2, Jennifer A Flynn3, Yuka Tanji3, Michihiro Takahashi3,41Lilly Suzhou Pharmaceutical Co, Shanghai, People's Republic of China; 2Eli Lilly and Company, Indianapolis, IN, USA; 3Lilly Research Laboratories Japan, Eli Lilly Japan K.K., Kobe, 4Terauchi-Takahashi Psychiatric Clinic, Ashiya, JapanPurpose: Although expert guidelines for the treatment of schizophrenia recommend antipsychotic monotherapy, the use of antipsychotic polypharmacy is common. This study identified characteristics that differentiate patients with schizophrenia who are treated with olanzapine monotherapy versus polypharmacy in usual care in Japan.Patients and methods: In a large (N = 1850 prospective, observational study, Japanese patients with schizophrenia who initiated treatment with olanzapine were followed for 1 year. Consistent with past research, antipsychotic polypharmacy was defined as the concurrent use of olanzapine and another antipsychotic for at least 60 days. Switching was defined as discontinuing a prior antipsychotic therapy rather than augmenting the medication regimen. Predictors of antipsychotic monotherapy were based on information available at the time of olanzapine initiation. Baseline characteristics were compared using t-tests and Χ2 tests. Stepwise logistic regression was used to identify independent predictors of monotherapy.Results: Patients treated with olanzapine monotherapy (43.2% differed from those treated with antipsychotic polypharmacy (56.8% on demographics, treatment history, baseline symptom levels, functional levels, and treatment-emergent adverse events. Stepwise logistic regression identified multiple variables that significantly predicted monotherapy: older age, shorter duration of schizophrenia, outpatient status, comorbid medical conditions, lower body mass index, no prior anticholinergic use, no prior mood stabilizer use, and switching from a previous antipsychotic (typical or atypical

  6. Noninvasive brain stimulation by radioelectric asymmetric conveyor in the treatment of agoraphobia: open-label, naturalistic study

    Directory of Open Access Journals (Sweden)

    Mannu P

    2011-11-01

    Full Text Available Piero Mannu, Salvatore Rinaldi, Vania Fontani, Alessandro Castagna, Matteo Lotti MargottiDepartment of Neuro Psycho Physio Pathology, Rinaldi Fontani Institute, Florence, ItalyBackground: Agoraphobia is considered to be the most serious complication of panic disorder. It involves progressive development of debilitating anxiety symptoms related to being in situations where one would be extremely embarrassed and could not be rescued in the case of a panic attack. This study aimed to investigate the efficacy of noninvasive brain stimulation using a radioelectric asymmetric conveyor (REAC for agoraphobia.Patients and methods: Twenty-three patients (3 males and 20 females suffering from agoraphobia and without a history of panic disorder were evaluated by a psychiatrist using the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision, and the Agoraphobia Scale (AS. The patients were subjected to two 18-session cycles of noninvasive brain stimulation with the REAC, according to an established therapeutic protocol called neuro-psycho-physical optimization.Results: Analyzing the anxiety and avoidance parameters of the AS after the first and second cycles of REAC treatment revealed variation in levels of response to treatment, including weak (AS item 7, moderate (AS items 10 and 13, and good responses (AS items 1–6, 8, 9, 11, 12, and 14–20.Conclusion: These results highlight the potential of the REAC to treat complex clinical situations such as agoraphobia, which is typically resistant to pharmacologic treatments. Furthermore, these data show the advantages of REAC treatment, even compared with modern cognitive behavioral therapy, including a relatively rapid and “stable” clinical response (just over 6 months and economic cost.Keywords: anxiety, avoidance, fear, REAC

  7. A Non-Interventional Naturalistic Study of the Prescription Patterns of Antipsychotics in Patients with Schizophrenia from the Spanish Province of Tarragona.

    Directory of Open Access Journals (Sweden)

    Ana M Gaviria

    Full Text Available The analysis of prescribing patterns in entire catchment areas contributes to global mapping of the use of antipsychotics and may improve treatment outcomes.To determine the pattern of long-term antipsychotic prescription in outpatients with schizophrenia in the province of Tarragona (Catalonia-Spain.A naturalistic, observational, retrospective, non-interventional study based on the analysis of registries of computerized medical records from an anonymized database of 1,765 patients with schizophrenia treated between 2011 and 2013.The most used antipsychotic was risperidone, identified in 463 (26.3% patients, followed by olanzapine in 249 (14.1%, paliperidone in 225 (12.7%, zuclopenthixol in 201 (11.4%, quetiapine in 141 (8%, aripiprazole in 100 (5.7%, and clozapine in 100 (5.7%. Almost 8 out of 10 patients (79.3% were treated with atypical or second-generation antipsychotics. Long-acting injectable (LAI formulations were used in 44.8% of patients. Antipsychotics were generally prescribed in their recommended doses, with clozapine, ziprasidone, LAI paliperidone, and LAI risperidone being prescribed at the higher end of their therapeutic ranges. Almost 7 out of 10 patients (69.6% were on antipsychotic polypharmacy, and 81.4% were on psychiatric medications aside from antipsychotics. Being prescribed quetiapine (OR 14.24, 95% CI 4.94-40.97, LAI (OR 9.99, 95% CI 6.45-15.45, psychiatric co-medications (OR 4.25, 95% CI 2.72-6.64, and paliperidone (OR 3.13, 95% CI 1.23-7.92 were all associated with an increased likelihood of polypharmacy. Being prescribed risperidone (OR 0.54, 95% CI 0.35-0.83 and older age (OR 0.98, 95% CI 0.97-0.99 were related to a low polypharmacy probability.Polypharmacy is the most common pattern of antipsychotic use in this region of Spain. Use of atypical antipsychotics is extensive. Most patients receive psychiatric co-medications such as anxiolytics or antidepressants. Polypharmacy is associated with the use of quetiapine or

  8. Naturalistic Experience and the Early Use of Symbolic Artifacts

    Science.gov (United States)

    Troseth, Georgene L.; Casey, Amy M.; Lawver, Kelly A.; Walker, Joan M. T.; Cole, David A.

    2007-01-01

    Experience with a variety of symbolic artifacts has been proposed as a mechanism underlying symbolic development. In this study, the parents of 120 2-year-old children who participated in symbolic object retrieval tasks completed a questionnaire regarding their children's naturalistic experience with symbolic artifacts and activities. In separate…

  9. An inventory of Canadian pregnancy and birth cohort studies: research in progress

    Directory of Open Access Journals (Sweden)

    Joly Marie-Pier

    2012-10-01

    Full Text Available Abstract Background A web-based inventory was developed as a voluntary registry of Canadian pregnancy and birth cohort studies, with the objective to foster collaboration and sharing of research tools among cohort study groups as a means to enrich research in maternal and child health across Canada. Description Information on existing birth cohort studies conducted in Canada exclusively or as part of broader international initiatives was accessed by searching the literature in PubMed and PsychInfo databases. Additional studies were identified by enquiring about the research activities of researchers at Canadian universities or working in affiliated hospitals or research centres or institutes. Of the fifty-eight birth cohort studies initially identified, forty-six were incorporated into the inventory if they were of a retrospective and/or prospective longitudinal design and with a minimum of two phases of data collection, with the first period having occurred before, during, or shortly after pregnancy and had an initial study sample size of a minimum of 200 participants. Information collected from each study was organized into four main categories: basic information, data source and period of collection, exposures, and outcome measures and was coded and entered into an Excel spreadsheet. The information incorporated into the Excel spreadsheet was double checked, completed when necessary, and verified for completeness and accuracy by contacting the principal investigator or research coordinator. All data collected were then uploaded onto the website of the Institute of Human Development Child and Youth Health of the Canadian Institutes of Health Research. Subsequently, the database was updated and developed as an online searchable inventory on the website of the Maternal, Infant, Child and Youth Research Network. Conclusions This inventory is unique, as it represents detailed information assembled for the first time on a large number of Canadian

  10. Qualitative Insights from a Canadian Multiinstitutional Research Study: In Search of Meaningful E-learning

    OpenAIRE

    Lorraine M. Carter; Vince Salyers; Sue Myers; Carol Hipfner; Caroline Hoffart; Christa MacLean; Kathy White; Theresa Matus; Vivian Forssman; Penelope Barrett

    2014-01-01

    This paper reports the qualitative findings of a mixed methods research study conducted at three Canadian post-secondary institutions. Called the Meaningful E-learning or MEL project, the study was an exploration of the teaching and learning experiences of faculty and students as well as their perceptions of the benefits and challenges of e-learning. Importantly, e-learning was conceptualized as the integration of pedagogy, instructional technology, and the Internet into teaching ...

  11. Prevalence and characteristics of Postpartum Depression symptomatology among Canadian women: a cross-sectional study

    OpenAIRE

    Kuk Jennifer L; Lanes Andrea; Tamim Hala

    2011-01-01

    Abstract Background This study aims to look at the prevalence and characteristics of postpartum depression symptomatology (PPDS) among Canadian women. Studies have found that in developed countries, 10-15% of new mothers were affected by major postpartum depression. Mothers who suffer from postpartum depression may endure difficulties regarding their ability to cope with life events, as well as negative clinical implications for maternal-infant attachment. Methods An analysis based on 6,421 C...

  12. Job satisfaction, workplace stress, unhealthy lifestyle choices, and productivity among Canadian nurses: an empirical study

    OpenAIRE

    Karen J. Buhr

    2012-01-01

    BACKGROUND: Nurses’ occupational stress and job satisfaction can have an affect on lifestyle choices and productivity. OBJECTIVES: The objective of this study is to provide a detailed examination of the relationship between job satisfaction, job stress, unhealthy lifestyle choices, and productivity among Canadian nurses. METHODS: This study uses data from the confidential master data files of the 2005 National Survey of the Work and Health of Nurses (NSWHN). Ordinary least squares regressions...

  13. A card game for the treatment of delusional ideas: A naturalistic pilot trial

    Directory of Open Access Journals (Sweden)

    Benzakin Laetitia

    2006-10-01

    Full Text Available Abstract Background "Michael's game" is a card game which aims at familiarizing healthcare professionals and patients with cognitive behavioral therapy of psychotic symptoms. This naturalistic study tests the feasibility and the impact of the intervention in various naturalistic settings. Method Fifty five patients were recruited in seven centers. They were assessed in pre and post-test with the Peters Delusion Inventory – 21 items (PDI-21. Results Forty five patients completed the intervention significantly reducing their conviction and preoccupation scores on the PDI-21. Conclusion This pilot study supports the feasibility and effectiveness of "Michael's game" in naturalistic setting. Additional studies could validate the game in a controlled fashion.

  14. Parameter estimates for invasive breast cancer progression in the Canadian National Breast Screening Study

    OpenAIRE

    Taghipour, S.; Banjevic, D; Miller, A.B.; Montgomery, N; A K S Jardine; Harvey, B. J.

    2013-01-01

    Background: The aim of screening is to detect a cancer in the preclinical state. However, a false-positive or a false-negative test result is a real possibility. Methods: We describe invasive breast cancer progression in the Canadian National Breast Screening Study and construct progression models with and without covariates. The effect of risk factors on transition intensities and false-negative probability is investigated. We estimate the transition rates, the sojourn time and sensitivity o...

  15. Geopolitics to Geopolinomics - A Case Study of Political Domination through Economic Means: The Canadian Defence Industry

    OpenAIRE

    Ojanen, Laura

    2004-01-01

    Throughout its history, Canada’s geographical location has set limitations on the scope of political and economic actions available to the Canadian government while concurrently supplying it with the political and economic clout that allows it to have a greater presence on the global stage. Thus, geopolitics, which is generally understood to be the study of the political and strategic relevance of geography to the pursuit of international power, has been of crucial importance to the Canadia...

  16. Servant leadership: a case study of a Canadian health care innovator

    OpenAIRE

    Vanderpyl TH

    2012-01-01

    Tim H VanderpylSchool of Global Leadership, Regent University, Virginia Beach, VA, USAAbstract: Both servant leadership and innovation are easier to theorize than to actually implement in practice. This article presents a case study of a Canadian health care executive who led a remarkable turnaround of St Michael's Health Centre, a floundering and almost bankrupt nursing home. In less than 7 years, Kevin Cowan turned around the finances and changed numerous broken relationships into s...

  17. Prevalence and characteristics of Postpartum Depression symptomatology among Canadian women: a cross-sectional study

    Directory of Open Access Journals (Sweden)

    Kuk Jennifer L

    2011-05-01

    Full Text Available Abstract Background This study aims to look at the prevalence and characteristics of postpartum depression symptomatology (PPDS among Canadian women. Studies have found that in developed countries, 10-15% of new mothers were affected by major postpartum depression. Mothers who suffer from postpartum depression may endure difficulties regarding their ability to cope with life events, as well as negative clinical implications for maternal-infant attachment. Methods An analysis based on 6,421 Canadian women, who had a live birth between 2005 and 2006 and were part of the Maternity Experience Survey (MES, was performed. PPDS was measured based on the Edinburgh Postnatal Depression Scale. Various factors that assessed socio-economic status, demographic factors, and maternal characteristics were considered for the multinomial regression model. Results The national prevalence of minor/major and major PPDS was found to be 8.46% and 8.69% respectively. A mother's stress level during pregnancy, the availability of support after pregnancy, and a prior diagnosis of depression were the characteristics that had the strongest significant association with the development of PPDS. Conclusions A significant number of Canadian women experience symptoms of postpartum depression. Findings from this study may be useful to increase both the attainment of treatment and the rate at which it can be obtained among new mothers. Interventions should target those with the greatest risk of experiencing PPDS, specifically immigrant and adolescent mothers.

  18. Comparison of the antidepressant effects of venlafaxine and dosulepin in a naturalistic setting

    DEFF Research Database (Denmark)

    Bukh, Jens Drachmann; Jørgensen, Martin Balslev; Dam, Henrik;

    2009-01-01

    The relative efficacy of the various classes of antidepressants has not been established. Observational studies in naturalistic settings are important in evaluating treatment outcomes with antidepressants, since controlled clinical trials include only a minority of patients present in clinical...... practice. This study sought to evaluate in a naturalistic setting the treatment outcomes of dosulepin and venlafaxine for patients with depressive episodes. At the university hospital in Copenhagen, Denmark, between 1998 and early 2001, the first-line treatment for psychiatric inpatients with depression...... because of an underpowered design) after replacing dosulepin with venlafaxine as first-line drug for depression in a naturalistic inpatient setting....

  19. Recent Studies in Canadian Immigration and Ethnic History.

    Science.gov (United States)

    Palmer, Howard

    1982-01-01

    Reviews recent historical studies of immigration patterns of ethnic groups into Canada. The author examines educational history, ethnic relations and nativism (including anti-semitism), working class history, and urban history. An extensive bibliogaphy is included. (AM)

  20. Canadian Association of Oilwell Drilling Contractors: energy efficiency study

    International Nuclear Information System (INIS)

    The reported study is based on updated survey data collected from seven of the eight drilling contractors who participated in an original study and three service rig contractors. The aim of the study was show that the trend toward increased energy efficiency and overall reduction in energy intensity is continuing in the drilling and well servicing industries, and that this process is a function of technology availability and capital replacement. A comparison is made of the change in fuel efficiency of contractor's diesel engines by comparing the average fuel consumption of an inventory of engines owned by the eight drilling contractors and three service rig contractors between 1995 and 1998. The results are compiled separately for the two contractor types. For each group, the results are on a net basis, in that the net change in the amount of a particular engine variety is aggregated into one of two categories: added or deleted. Based on on an evaluation of the data gathered in the study, it is clearly evident that there occurred at substantial reduction in energy intensity in drilling and well servicing operations in the 3 years considered. Based on the data from the drilling rigs, it should be noted that the reductions in energy intensity and fuel usage are in addition to the 29.4% reduction in the years 1991-95 recorded in the 1995 energy efficiency study. It ought to be noted also that the turnover and replacements of older, less efficient rig engines with newer, more efficient ones was not a consequence of any distortionary tax and fiscal measures, but rather a natural process of capital reinvestment and technological improvement

  1. Environmental performance indicators: an empirical study of Canadian manufacturing firms.

    Science.gov (United States)

    Henri, Jean-François; Journeault, Marc

    2008-04-01

    The aim of this exploratory study is to examine the importance of measurement and use of environmental performance indicators (EPIs) within manufacturing firms. Two research questions are investigated: (i) To what extent are firm characteristics associated with the importance of measurement of various categories of EPIs? (ii) To what extent are firm characteristics associated with global and specific uses of EPIs? More specifically, this paper examines four uses of EPIs (i.e. to monitor compliance, to motivate continuous improvement, to support decision making, and to provide data for external reporting) as well as four characteristics of firms, namely environmental strategy, International Organization for Standardization (ISO) 14001 compliance, size, and ownership. This study contributes to the environmental management accounting literature by collecting and analyzing empirical evidence that provides a better understanding of the associations among firm characteristics and EPIs. PMID:17368921

  2. The Canadian Incidence Study of Reported Child Abuse and Neglect: a partnership.

    Science.gov (United States)

    Tonmyr, L

    2015-01-01

    In the mid-1990s, Health Canada's Family Violence Prevention Unit commissioned a study to assess the possibility of collecting child maltreatment data from child welfare agencies across Canada. A Health Canada group responsible for maternal and child health surveillance built on the results of this study. This group consulted widely with provincial and territorial partners to build a surveillance system, resulting in a truly collaborative effort that led to the implementation of the Canadian Incidence Study of Reported Child Abuse and Neglect (CIS). This was a remarkable accomplishment considering the challenge of working with multiple partners, different legislative frameworks and the stigma that often accompanies the experience of child maltreatment. PMID:26605558

  3. A study of algal biomass potential in selected Canadian regions.

    Energy Technology Data Exchange (ETDEWEB)

    Passell, Howard David; Roach, Jesse Dillon; Klise, Geoffrey T.

    2011-11-01

    A dynamic assessment model has been developed for evaluating the potential algal biomass and extracted biocrude productivity and costs, using nutrient and water resources available from waste streams in four regions of Canada (western British Columbia, Alberta oil fields, southern Ontario, and Nova Scotia). The purpose of this model is to help identify optimal locations in Canada for algae cultivation and biofuel production. The model uses spatially referenced data across the four regions for nitrogen and phosphorous loads in municipal wastewaters, and CO{sub 2} in exhaust streams from a variety of large industrial sources. Other data inputs include land cover, and solar insolation. Model users can develop estimates of resource potential by manipulating model assumptions in a graphic user interface, and updated results are viewed in real time. Resource potential by location can be viewed in terms of biomass production potential, potential CO{sub 2} fixed, biocrude production potential, and area required. The cost of producing algal biomass can be estimated using an approximation of the distance to move CO{sub 2} and water to the desired land parcel and an estimation of capital and operating costs for a theoretical open pond facility. Preliminary results suggest that in most cases, the CO{sub 2} resource is plentiful compared to other necessary nutrients (especially nitrogen), and that siting and prospects for successful large-scale algae cultivation efforts in Canada will be driven by availability of those other nutrients and the efficiency with which they can be used and re-used. Cost curves based on optimal possible siting of an open pond system are shown. The cost of energy for maintaining optimal growth temperatures is not considered in this effort, and additional research in this area, which has not been well studied at these latitudes, will be important in refining the costs of algal biomass production. The model will be used by NRC-IMB Canada to identify

  4. Recent Canadian studies on the low-temperature oxidation of UO2

    International Nuclear Information System (INIS)

    The oxidation of UO2 at low temperatures (lower than 400 degrees Celsius) has been investigated extensively, mostly in relation to studies on the dry interim storage of irradiated nuclear fuel. The paper summarises some recent Canadian studies on the oxidation mechanism, including the effects of moisture, fission products, and nitrogen oxides, as well as surface preparation, on the oxidation rate and the nature of the oxidation products. In addition, some recent tests on irradiated fuel oxidation at 130 degrees Celsius and 170 degrees Celsius are described

  5. A card game for the treatment of delusional ideas: A naturalistic pilot trial

    OpenAIRE

    Benzakin Laetitia; Azoulay Silke; Finot Sophie; Libbrecht Joël; Favrod Jérôme; Khazaal Yasser; Oury-Delamotte Myriam; Follack Christian; Pomini Valentino

    2006-01-01

    Abstract Background "Michael's game" is a card game which aims at familiarizing healthcare professionals and patients with cognitive behavioral therapy of psychotic symptoms. This naturalistic study tests the feasibility and the impact of the intervention in various naturalistic settings. Method Fifty five patients were recruited in seven centers. They were assessed in pre and post-test with the Peters Delusion Inventory – 21 items (PDI-21). Results Forty five patients completed the intervent...

  6. A study on the thoron sensitivity of radon detectors available to Canadians

    International Nuclear Information System (INIS)

    Radon and its decay products have been identified as the second leading cause of lung cancer after tobacco smoking. Thoron is an isotope of radon. With increased awareness of radon, questions related to thoron are arising from the public. Currently, only radon detectors are commonly available to Canadian homeowners. A study on the thoron sensitivities of those radon detectors was undertaken. The average thoron sensitivity relative to radon varied from a factor of 0.012 to 0.74 for the five commonly available types of alpha track radon detectors. The potential impact of thoron sensitivity on radon test results is discussed. (paper)

  7. FCC Study of Canadian Heavy Gas Oils Comparisons of Product Yields and Qualities between Reactors

    Institute of Scientific and Technical Information of China (English)

    SiauwH.Ng; AdrianHumphries; CraigFairbridge; ZhuYuxia; SokYui

    2005-01-01

    Several series of cracking tests in a comprehensive study were conducted on separate occasions involving all or parts of ten Canadian vacuum gas oils (VGOs) and two catalysts with bottoms-cracking or octane-barrel capability.VGOs were cracked in fixed- and/or fluid-bed microactivity test (MAT) units, in an Advanced Cracking Evaluation (ACE)unit, and in a modified ARCO riser reactor. Individual yields of gas, liquid, and coke from the MATs at 55, 65, 70, and 81 wt% conversion levels were compared with their respective pilot plant data. Good linear correlations could be established between MAT and riser yields except for liquefied petroleum gas (LPG) and light cycle oil (LCO). At a given conversion,correlations existed among the fixed- and fluid-bed MAT units and the ACE for each product yield. Liquid products from the fixed or fluid-bed MAT were analyzed for hydrocarbon types, sulfur, nitrogen and density, most of which showed good agreement with those obtained from the riser study. When cracking Canadian oil-sands-derived VGOs, the bottomscracking catalyst containing a large-pore active matrix was found to be more suitable than the octane-barrel catalyst with smaller pores to produce higher yields of valuable distillates, but with less superior qualities (in terms of sulfur and nitrogen contents). The advantages of hydrotreating some poor feeds to improve product yields and qualities were demonstrated and discussed.

  8. Socio-economic implications of climate change: Canadian climate impacts program study results

    International Nuclear Information System (INIS)

    A review is presented of results of the Canadian Climate Impacts Program series of studies examining the socio-economic impacts of climate change. In the Great Lakes basin, climate change may impact on numerous economic sectors. Lower lake levels could result in increased dredging of ports and channels or reduced cargo loads. Lower lake levels added to increased use of water could result in a loss of 4,165 GWh of power generation for the Canadian hydro-electric generating stations on the Great Lakes. A warmer climate may lead to crop failures in the agricultural heartlands of Ontario, as the advantages of higher temperature may be offset by moisture stress. The downhill ski industry may be decimated in southern Ontario. Rising sea levels may cause increased risk of storm surges and river flooding in the coastal areas of Canada. A warmer climate would probably be beneficial to aquaculture and allow longer inshore fishing seasons. Costs to oil and gas exploration due to sea ice and icebergs would be practically eliminated. Results for the Praire provinces were mixed: one study concluded that impacts would be minimal while another predicted a moderate reduction in spring wheat potential. 24 refs., 1 fig

  9. An ultrasound study of Canadian French rhotic vowels with polar smoothing spline comparisons.

    Science.gov (United States)

    Mielke, Jeff

    2015-05-01

    This is an acoustic and articulatory study of Canadian French rhotic vowels, i.e., mid front rounded vowels /ø œ̃ œ/ produced with a rhotic perceptual quality, much like English [ɚ] or [ɹ], leading heureux, commun, and docteur to sound like [ɚʁɚ], [kɔmɚ̃], and [dɔktaɹʁ]. Ultrasound, video, and acoustic data from 23 Canadian French speakers are analyzed using several measures of mid-sagittal tongue contours, showing that the low F3 of rhotic vowels is achieved using bunched and retroflex tongue postures and that the articulatory-acoustic mapping of F1 and F2 are rearranged in systems with rhotic vowels. A subset of speakers' French vowels are compared with their English [ɹ]/[ɚ], revealing that the French vowels are consistently less extreme in low F3 and its articulatory correlates, even for the most rhotic speakers. Polar coordinates are proposed as a replacement for Cartesian coordinates in calculating smoothing spline comparisons of mid-sagittal tongue shapes, because they enable comparisons to be roughly perpendicular to the tongue surface, which is critical for comparisons involving tongue root position but appropriate for all comparisons involving mid-sagittal tongue contours. PMID:25994713

  10. Study of the economic and environmental impacts of the research and development program of the Canadian Carbonization Research Association (CCRA)

    International Nuclear Information System (INIS)

    A partnership between the Canada Centre for Mineral and Energy Technology (CANMET) Energy Technology Centre (CETC) of Natural Resources Canada (NRCan), and the Canadian coal and steel industries, the Canadian Carbonization Research Association (CCRA) which conducts research and development activities with its partners. This document summarizes the economic and environmental impacts of the research and development program administered by the CCRA. More than 25 research programs have been undertaken by the CCRA since it was established in 1964. The activities dealt with specific technical challenges which the Canadian coal industry faced with regard to the production and marketing of metallurgical coal, as well as the uses of coal and alternative fuels such as natural gas to make coke used in blast furnaces. The report detailed the scope of CETC's energy for high temperature processes, then addressed program resources and study methodology. Three categories of impacts were discussed: general-level impacts, economic and environmental impacts, and quantitative estimates of economic impacts. The attribution of impacts was examined and future directions were examined in the last section of the report. It was determined that CETC participation in the research program is still required, due to the fact that it is Canada's only technical support available to the Canadian coking coal industry. The survival of Canadian coal producers owes something to the economic impacts derived from the CCRA under the current decreasing metallurgical coal prices conditions. 2 tabs

  11. Mental Retardation in a Canadian Province: Pilot Study and Design Development, to September, 1968. Report No. 2.

    Science.gov (United States)

    Portal-Foster, C. W.; And Others

    The second report on the Canadian Welfare Council's study of the social and psychological aspects of mental handicaps in the population of Prince Edward Island reviews the development of the project, describes its current status, and outlines plans for continuation . The purpose of the study is to define the nature and prevalence of mental…

  12. Qualitative Insights from a Canadian Multi-Institutional Research Study: In Search of Meaningful E-Learning

    Science.gov (United States)

    Carter, Lorraine M.; Salyers, Vince; Myers, Sue; Hipfner, Carol; Hoffart, Caroline; MacLean, Christa; White, Kathy; Matus, Theresa; Forssman, Vivian; Barrett, Penelope

    2014-01-01

    This paper reports the qualitative findings of a mixed methods research study conducted at three Canadian post-secondary institutions. Called the Meaningful E-learning or MEL project, the study was an exploration of the teaching and learning experiences of faculty and students as well as their perceptions of the benefits and challenges of…

  13. Internationalization in Canadian Higher Education: A Case Study of the Gap between Official Discourses and On-the-Ground Realities

    Science.gov (United States)

    Larsen, Marianne A.

    2015-01-01

    This case study about one university's internationalization initiative, known as North Goes South, provides a nuanced and finely grained understanding of what internationalization looks like in practice. The study was guided by a desire to probe the perceived impact of a Canadian-East African internationalization initiative on students, faculty,…

  14. Evaluating the Georgia Master Naturalist Program

    Science.gov (United States)

    Hildreth, Lauren; Mengak, Michael T.

    2016-01-01

    We evaluated the Georgia Master Naturalist Program using an online survey. Survey participation was voluntary, and the survey addressed areas such as satisfaction, volunteerism, and future training. The program received high scores from survey respondents. They appreciated training on native plants, environmental awareness, and ecological…

  15. Testing the concurrent validity of a naturalistic upper extremity reaching task.

    Science.gov (United States)

    Schaefer, S Y; Hengge, C R

    2016-01-01

    Point-to-point reaching has been widely used to study upper extremity motor control. We have been developing a naturalistic reaching task that adds tool manipulation and object transport to this established paradigm. The purpose of this study was to determine the concurrent validity of a naturalistic reaching task in a sample of healthy adults. This task was compared to the criterion measure of standard point-to-point reaching. Twenty-eight adults performed unconstrained out-and-back movements in three different directions relative to constant start location along midline using their nondominant arm. In the naturalistic task, participants manipulated a tool to transport objects sequentially between physical targets anchored to the planar workspace. In the standard task, participants moved a digital cursor sequentially between virtual targets, veridical to the planar workspace. In both tasks, the primary measure of performance was trial time, which indicated the time to complete 15 reaches (five cycles of three reaches/target). Two other comparator tasks were also designed to test concurrent validity when components of the naturalistic task were added to the standard task. Spearman's rank correlation coefficients indicated minimal relationship between the naturalistic and standard tasks due to differences in progressive task difficulty. Accounting for this yielded a moderate linear relationship, indicating concurrent validity. The comparator tasks were also related to both the standard and naturalistic task. Thus, the principles of motor control and learning that have been established by the wealth of point-to-point reaching studies can still be applied to the naturalistic task to a certain extent. PMID:26438508

  16. Prosocial Development from Childhood to Adolescence: A Multi-Informant Perspective with Canadian and Italian Longitudinal Studies

    Science.gov (United States)

    Nantel-Vivier, Amelie; Kokko, Katja; Caprara, Gian Vittorio; Pastorelli, Concetta; Gerbino, Maria Grazia; Paciello, Marinella; Cote, Sylvana; Pihl, Robert O.; Vitaro, Frank; Tremblay, Richard E.

    2009-01-01

    Objectives: To longitudinally describe prosocial behaviour development from childhood to adolescence, using multiple informants within Canadian and Italian samples. Method: Participants in Study 1 were 1037 boys from low socioeconomic status (SES) areas in Montreal, Canada, for whom yearly teacher and mother reports were obtained between the ages…

  17. Ready or Not...: Perspectives on Literacy and Essential Skills in this Economic Downturn--A Canadian Baseline Study

    Science.gov (United States)

    Murray, Janet; Yerichuk, Deanna; Murray-Smith, Nick

    2009-01-01

    In March 2009, Movement for Canadian Literacy (MCL) commissioned "Resources for Results", a private research and evaluation firm, to conduct a baseline study to explore the effects of the recent economic downturn on literacy and essential skills programs across Canada. The "Resources for Results" research team interviewed 35 people from across…

  18. Does mirtazapine interfere with naturalistic diabetes treatment?

    Science.gov (United States)

    Song, Hoo Rim; Woo, Young Sup; Wang, Hee-Ryung; Shim, In-Hee; Jun, Tae-Youn; Bahk, Won-Myong

    2014-10-01

    Mirtazapine is known to induce weight gain and possibly leads to exacerbation of diabetic profiles. However, many cases of diabetic patients, who complained of insomnia and depression, were treated with mirtazapine in the clinical situations. Thus, this study aimed to assess any negative effects that treatment with mirtazapine may incur in diabetic patients.This study included 33 patients enrolled in naturalistic diabetes treatment that had also been diagnosed with depression and prescribed mirtazapine for at least 6 months. Another 33 diabetic patients who had not taken any psychiatric medicines were included as a control group. Body mass index, fasting plasma glucose, HbA1c, total cholesterol, triglyceride levels, high-density lipoprotein, and low-density lipoprotein were assessed at baseline, 3 months, and 6 months.The dose of mirtazapine at baseline was 24.3 ± 14.0 mg/d in the mirtazapine group, and the 2 groups did not differ in any baseline characteristics except for total cholesterol levels. Body mass index increased in both groups, and the change in the mirtazapine group (1.0 ± 0.6 kg/m) was significantly greater than that in the control group (0.3 ± 0.4 kg/m, P < 0.001) at 6 months. Only the control group exhibited a decrease in fasting plasma glucose, whereas both groups showed a decrease in HbA1c, low-density lipoprotein, and total cholesterol, an increase in high-density lipoprotein, and no change in triglyceride levels. None of the differences between the groups were statistically significant.In conclusion, mirtazapine increased the weight gain of diabetic patients; however, other diabetic and lipid markers generally did not worsen during the 6-month treatment period. These results suggest that, at least in the short term, mirtazapine is safe for diabetic patients in a stable state and are undergoing appropriate diabetic treatment. PMID:24987796

  19. Modeling 100-car safety events : a case-based approach for analyzing naturalistic driving data : final report

    OpenAIRE

    Guo, Feng; Hankey, Jonathan M.

    2009-01-01

    This study developed an integrated framework for modeling the safety outcomes of naturalistic driving studies and addressed several critical methodological issues. The results indicate a certain level of discrepancy between the model-based approaches and the crude odds ratios.

  20. Techno-economic evaluation of internal combustion engine based cogeneration system retrofits in Canadian houses – A preliminary study

    International Nuclear Information System (INIS)

    Highlights: • Performance of IC engine cogeneration for Canadian housing is evaluated. • Primary energy saving index was used for energetic evaluation. • Greenhouse gas reduction index was used for environmental evaluation. • Tolerable capital cost was used to evaluate economic performance. • Impact of thermal storage capacity on cogeneration system performance was studied. - Abstract: A preliminary techno-economic evaluation of retrofitting reciprocating internal combustion engine based cogeneration into existing Canadian houses for the purpose of achieving or approaching net-zero energy rating is presented. Primary energy and electricity consumption, associated greenhouse gas emissions and tolerable capital cost are used as indicators. A whole building simulation model was used to simulate the performance of a commonly used cogeneration system architecture with thermal storage in “typical” single storey houses located in Halifax, Montreal, Toronto, Edmonton and Vancouver, representing the five major climatic regions of Canada. The system is assumed to sell excess electricity to the grid at the purchase price. A high efficiency auxiliary boiler is included to supply heat when cogeneration unit capacity is not sufficient to meet the heating load. The effect of thermal storage capacity, interest rate and acceptable payback period on the overall performance was evaluated through a sensitivity analysis. The findings suggest that internal combustion engine based cogeneration provides a promising option to achieve net-zero energy rating for Canadian houses, and therefore more detailed studies focusing on the entire Canadian housing stock are needed

  1. A study of supply-chain capabilities in the Canadian wind power industry

    International Nuclear Information System (INIS)

    In recent years, Canadian wind energy has developed to a total installed capacity of 439 MW. It is possible that by 2012, the cumulative installed wind power capacity may reach 5,600 MW, representing an investment of $8.4 billion. This analysis of the supply-chain structure in the life cycle of a wind farm identified many potential areas where Canadian companies can offer services. Opportunities for both manufacturers and service providers were presented. It was emphasized that although wind energy is a growth industry, Canada has not participated in the development and commercialization of large wind turbine technology. The technical barriers facing Canadian suppliers regarding wind turbine generator (WTG) assembly and component manufacturing were presented. Currently, Canada imports all large WTGs and components. In order to maximize benefits to the Canadian economy, it was recommended that Canadian companies acquire European technology through licences, joint ventures or foreign investment. Technology transfer funding, training and technical assistance funding, tax incentives for capital equipment and support to universities and colleges were also recommended. It was suggested that Canadian companies should focus on manufacturing rotor blades, towers, base frames, nacelle covers and spinners, flexible drive shafts, disk brakes, vibration mounts, inverters, control cabinets, and generators. tabs., figs

  2. Intuitions in Epistemology: Towards a Naturalistic Alternative

    DEFF Research Database (Denmark)

    Ahlström, Kristoffer

    2009-01-01

    The present paper revisits the main methodological problems with conceptual analysis and considers two attempts to rectify them in terms of prototypes and reflective equilibria, respectively. Finding both wanting for the purposes of epistemological analysis, a naturalistic alternative is then...... sketched that explores the positive implications of aforementioned problems for the demarcation of the respective roles of intuitions and empirical investigation within three epistemological domains, viz., the evaluation of epistemological hypotheses, the amelioration of epistemic practices, and the...

  3. Asa Gray and Charles Darwin: Corresponding Naturalists

    OpenAIRE

    Browne, Janet E

    2010-01-01

    Recent work on the rise of science in the nineteenth century has encouraged historians to look again at the role of correspondence. Naturalists relied extensively on this form of contact and correspondence was a major element in generating a community of experts who agreed on what comprised valid knowledge. As a leading figure in the development of North American botany, Asa Gray found that letters with botanists and collectors all over the world greatly expanded his areas of influence. La...

  4. The Search for Meaningful e-Learning at Canadian Universities: A Multi-Institutional Research Study

    Directory of Open Access Journals (Sweden)

    Vincent Salyers

    2014-12-01

    Full Text Available While e-learning is now characterized by a past and trends within that past, there continues to be uncertainty about how e-learning is defined and conceptualized, whether or not we like e-learning, and whether or not it is as meaningful to us as face to face learning. The purpose of this study was to document the e-learning perceptions of students at three Canadian post-secondary institutions. Key components of e-learning courses including ease of navigation, course design, resource availability, and adequacy of e-learning supports and their impact on the student learning experience were also evaluated. Based on a survey of students (n= 1,377 as well as their participation in focus groups, the following are presented as important findings: the majority of students studying in e-learning courses at the three institutions represented in the study were women; ease of navigation, course design, and previous experience with e-learning consistently demonstrated a statistically significant predictive capacity for positive e-learning experiences; and students expressed less preference for e-learning instructional strategies than their faculty. Study findings hold implications for e-learning faculty, instructional designers, and administrators at institutions of higher education in Canada and elsewhere where e-learning is part of the institutional mandate. Additionally, further research into student perceptions of and experiences with e-learning is recommended.

  5. Comparison of Climate Preferences for Domestic and International Beach Holidays: A Case Study of Canadian Travelers

    Directory of Open Access Journals (Sweden)

    Michelle Rutty

    2016-02-01

    Full Text Available Coastal tourism is the largest segment of global leisure tourism and it is firmly linked to the destination’s natural resources—with climatic resources chief among them. Through observations and survey responses of beach users, studies have evaluated climatic resources for coastal tourism by quantifying optimal and unacceptable conditions. However, these studies have not taken into consideration that different forms of holidays (e.g., daytrips, short trips, main annual holiday, “once-in-a-lifetime” trip may have varying degrees of resilience to climatic conditions. This is the first study to explore whether ideal and unacceptable climatic conditions vary between domestic and international tourists. Using an in situ survey, Canadian beach users traveling domestically (n = 359 and internationally (n = 120 were examined. Key findings include statistically significant differences (p ≤ 0.05 between the two sample groups for every climate variable, with the international sample more resilient to a broader range of weather conditions, including a greater acceptance for warm temperatures, longer rainfall durations, higher wind speeds, and greater cloud cover. This study adds further insight into the complexities of evaluating climate for tourism, with implications for the demand response of tourists to climate change.

  6. Naturalistic Extremes in Al Aswaany’s The Yacoubian Building

    Directory of Open Access Journals (Sweden)

    Hussein H. Zeidanin

    2016-01-01

    Full Text Available Emile Zola and other naturalistic novelists such as Stephen Crane, Jack London, Edith Wharton, Frank Norris, John Steinbeck and Richard Wright perceive naturalism as an anti-romantic philosophy dispensing with emotions, sentiments and imagination and parodying the romantic paradigm for idealizing the past and avoiding realities. They view literature as experimental and investigational as science and the novelist as scientist who objectively and methodologically observes and tests the actions and reactions of representative fictional characters under controlled conditions.  On the contrary, the writings of the opponents of naturalism like those of A. Plantinga (2010, H. Putnam (2000, J. Kim (2008, J. Spencer (2010, R. Bush (2003, and R. Gerhardt (2010 criticize naturalistic literature for focusing on the negative side instead of the bright side of life, attaching violence and threatening behaviors to the low class people, and representing a pessimistic view of life and human progress. Our paper seeks to recapitulate the epistemological premises of naturalism and the views of its proponents and opponents who debate over the materialism, atheism and sensationism of naturalism. The paper further analyzes the predominant correlation between environment and man, fate and man and biology and man from the perspective of naturalists. The study finds out that the actions and reactions of the fictional characters of Busayna el Sayed and Zaki el Dessouki in Al Aswany’s The Yacoubian Building (2003 are not self-determined; rather, they are predetermined by the triad of environment, fate and biology. In addition, the study observes that the absence of hope pervading the characters’ lives gives rise to their pessimistic worldviews and stoic behaviors. The study’s analysis and findings are based on Al Aswany’s text because it, on one hand, epitomizes the naturalistic poetics of classism, fatalism and predeterminism in the Egyptian society. On the other

  7. Evaluation of region-specific residential energy systems for GHG reductions: Case studies in Canadian cities

    International Nuclear Information System (INIS)

    This study estimates energy use and greenhouse gas (GHG) emissions associated with operations of alternative residential energy systems. In case studies, the same detached four-bedroom house built in accordance with R2000 standards is studied in five Canadian cities with different climate and electricity mix. Conventional energy systems and alternatives using three technologies, namely ground source heat pumps (GSHPs), photovoltaics, and energy-efficient appliances; and their combinations are investigated. The results show that using a GSHP in Calgary may increase overall GHG emissions, as electricity to drive the pump is primarily produced in coal-fired power stations. Using photovoltaics to generate electricity from carbon-free sources or energy-efficient appliances to reduce electricity demands result in almost no GHG reductions in Montreal and Vancouver, where over 90% of electricity comes from hydro power. The results also show that the use of photovoltaics in combination with GSHPs in Ottawa and Toronto, or with energy-efficient appliances in Calgary, can lead to more GHG reductions, compared to the use of a single technology. As a result, while climate affects energy use to some degree, local sources of electricity may have a greater impact on overall GHG emissions, which is an important measure of environmental impacts

  8. Determinants of internal medicine residents' choice in the canadian R4 Fellowship Match: A qualitative study

    Directory of Open Access Journals (Sweden)

    Kassam Narmin

    2011-06-01

    Full Text Available Abstract Background There is currently a discrepancy between Internal Medicine residents' decisions in the Canadian subspecialty fellowship match (known as the R4 match and societal need. Some studies have been published examining factors that influence career choices. However, these were either demographic factors or factors pre-determined by the authors' opinion as possibly being important to incorporate into a survey. Methods A qualitative study was undertaken to identify factors that determine the residents choice in the subspecialty (R4 fellowship match using focus group discussions involving third and fourth year internal medicine residents Results Based on content analysis of the discussion data, we identified five themes: 1 Practice environment including acuity of practice, ability to do procedures, lifestyle, job prospects and income 2 Exposure in rotations and to role models 3 Interest in subspecialty's patient population and common diseases 4 Prestige and respect of subspecialty 5 Fellowship training environment including fellowship program resources and length of training Conclusions There are a variety of factors that contribute to Internal Medicine residents' fellowship choice in Canada, many of which have been identified in previous survey studies. However, we found additional factors such as the resources available in a fellowship program, the prestige and respect of a subspecialty/career, and the recent trend towards a two-year General Internal Medicine fellowship in our country.

  9. The Canadian approach to microbial studies in nuclear waste management and disposal

    International Nuclear Information System (INIS)

    Many countries considering radioactive waste disposal have, or are considering programs to study and quantify microbial effects in terms of their particular disposal concept. Although there is an abundance of qualitative information, there is a need for quantitative data. Quantitative research should cover topics such as the kinetics of microbial activity in geological media, microbial effects on radionuclide migration in host rock (including effects of biofilms), tolerance to extreme conditions of radiation, heat and desiccation, microbially-influenced corrosion of waste containers and microbial gas production. The research should be performed in relevant disposal environments with the ultimate objective to quantify those effects that need to be included in models for predictive and safety assessment purposes. The Canadian approach to dealing with microbial effects involves a combination of pertinent, quantitative measurements from carefully designed laboratory studies and from large scale engineering experiments in AECL's Underground Research Laboratory (URL). The validity of these quantitative data is measured against observations from natural environments and analogues. An example is the viability of microbes in clay-based scaling materials. Laboratory studies have shown that the clay content of these barriers strongly affects microbial activity and movement. This is supported by natural environment and analogue observations that show clay deposits to contain very old tree segments and dense clay lenses in sediments to contain much smaller, less diverse and less active microbial populations than more porous sediments. This approach has allowed for focused, quantitative research on microbial effects in Canada. (author)

  10. A study of Iranian immigrants’ experiences of accessing Canadian health care services: a grounded theory

    Directory of Open Access Journals (Sweden)

    Dastjerdi Mahdieh

    2012-09-01

    Full Text Available Abstract Background Immigration is not a new phenomenon but, rather, has deep roots in human history. Documents from every era detail individuals who left their homelands and struggled to reestablish their lives in other countries. The aim of this study was to explore and understand the experience of Iranian immigrants who accessed Canadian health care services. Research with immigrants is useful for learning about strategies that newcomers develop to access health care services. Methods The research question guiding this study was, “What are the processes by which Iranian immigrants learn to access health care services in Canada?” To answer the question, a constructivist grounded theory approach was applied. Initially, unstructured interviews were conducted with 17 participants (11 women and six men who were adults (at least 18 years old and had immigrated to Canada within the past 15 years. Eight participants took part in a second interview, and four participants took part in a third interview. Results Using a constructivist grounded theory approach, “tackling the stumbling blocks of access” emerged as the core category. The basic social process (BSP, becoming self-sufficient, was a transitional process and had five stages: becoming a stranger; feeling helpless; navigating/seeking information; employing strategies; and becoming integrated and self-sufficient. We found that “tackling the stumbling blocks of access” was the main struggle throughout this journey. Some of the immigrants were able to overcome these challenges and became proficient in accessing health care services, but others were unable to make the necessary changes and thus stayed in earlier stages/phases of transition, and sometimes returned to their country of origin. Conclusion During the course of this journey a substantive grounded theory was developed that revealed the challenges and issues confronted by this particular group of immigrants. This process explains

  11. Potential Increased Risk of Ischemic Heart Disease Mortality With Significant Dose Fractionation in the Canadian Fluoroscopy Cohort Study

    OpenAIRE

    Lydia B Zablotska; Little, Mark P.; Cornett, R. Jack

    2013-01-01

    Risks of noncancer causes of death, particularly cardiovascular disease, associated with exposures to high-dose ionizing radiation, are well known. Recent studies have reported excess risk in workers who are occupationally exposed to low doses at a low dose rate, but the risks of moderately fractionated exposures, such as occur during diagnostic radiation procedures, remain unclear. The Canadian Fluoroscopy Cohort Study includes 63,707 tuberculosis patients exposed to multiple fluoroscopic pr...

  12. Barriers and supports to implementation of MDI/spacer use in nine Canadian pediatric emergency departments: a qualitative study

    OpenAIRE

    Graham Ian D; O'Leary Kathy A; Osmond Martin H; Scott Shannon D; Grimshaw Jeremy; Klassen Terry

    2009-01-01

    Abstract Background Despite recent research supporting the use of metered dose inhalers with spacer devices (MDI/spacers) in pediatric emergency departments (PEDs) for acute exacerbations of asthma, uptake of this practice has been slow. The objectives of this study were to determine the barriers and supports to implementing MDI/spacer research and to identify factors associated with early and late adoption of MDI/spacers in Canadian PEDs. Methods Using a comparative case study design, we cla...

  13. Servant leadership: a case study of a Canadian health care innovator

    Directory of Open Access Journals (Sweden)

    Vanderpyl TH

    2012-02-01

    Full Text Available Tim H VanderpylSchool of Global Leadership, Regent University, Virginia Beach, VA, USAAbstract: Both servant leadership and innovation are easier to theorize than to actually implement in practice. This article presents a case study of a Canadian health care executive who led a remarkable turnaround of St Michael's Health Centre, a floundering and almost bankrupt nursing home. In less than 7 years, Kevin Cowan turned around the finances and changed numerous broken relationships into strategic alliances. Under his leadership, St Michael's Health Centre went from being one of the most underperforming health care organizations in Canada, to one of the most innovative. This article describes some of Cowan's strategies and argues that a servant leadership approach has a direct impact on an organization's ability to innovate. As far as the author is aware, this is the first published article on this specific change effort, which presents a unique perspective on the topics of servant leadership and innovation.Keywords: servant leadership, innovation, Canada, health care, case study

  14. Dominant Cultural Narratives, Racism, and Resistance in the Workplace: A Study of the Experiences of Young Black Canadians.

    Science.gov (United States)

    Hasford, Julian

    2016-03-01

    Although many studies have examined lived experiences of racism and resistance in various contexts, relatively little research has examined such experiences among Black youth within the workplace-particularly in the Canadian context. In this study I use qualitative analyses of narrative interviews with 24 Black Canadian youth and young adults (aged 16-35) to examine the impact of dominant cultural narratives on lived experiences of workplace racism and resistance. Findings are presented using theatrical games as a central conceptual metaphor, suggesting that: (a) dominant cultural narratives have a major impact on relational dynamics of oppression in the workplace; (b) identity performance is a critical strategy for negotiating dominant cultural narratives in the workplace; and (c) panopticism (the internalized gaze) is a significant aspect of internalized oppression. Implications for future research and action are discussed. PMID:27217319

  15. Naturalistic Cognition: A Research Paradigm for Human-Centered Design

    OpenAIRE

    Peter Storkerson

    2010-01-01

    Naturalistic thinking and knowing, the tacit, experiential, and intuitive reasoning of everyday interaction, have long been regarded as inferior to formal reason and labeled primitive, fallible, subjective, superstitious, and in some cases ineffable. But, naturalistic thinking is more rational and definable than it appears. It is also relevant to design. Inquiry into the mechanisms of naturalistic thinking and knowledge can bring its resources into focus and enable designers to create better,...

  16. Primary productivity and export fluxes on the Canadian shelf of the Beaufort Sea: A modelling study

    Science.gov (United States)

    Lavoie, Diane; Macdonald, Robie W.; Denman, Kenneth L.

    2009-01-01

    We present a coupled sea ice-ocean-biological (including ice algae) model in the Arctic Ocean. The 1D model was developed and implemented on the Canadian Beaufort Sea shelf to examine the importance of different physical processes in controlling the timing and magnitude of primary production and biogenic particle export over an annual cycle (1987). Our results show that the snow and sea ice cover melt and/or break-up controls the timing of the phytoplankton bloom but primary producers (ice algae and phytoplankton) on the outer shelf are essentially nutrient limited. The total annual primary production (22.7 to 27.7 g-C m - 2 ) is thus controlled by nutrient "pre-conditioning" in the previous fall and winter and by the depth of wind mixing that is controlled in part by the supply of fresh water at the end of spring (ice melt or runoff). The spring bloom represents about 40% of the total annual primary production and occurs in a period of the year when sampling is often lacking. Time interpolation of observed values to obtain total annual primary production, as done in many studies, was shown to lead to an underestimation of the actual production. Our simulated ratios of export to primary production vary between 0.42 and 0.44.

  17. Cost study on waste management at three model Canadian uranium mines

    International Nuclear Information System (INIS)

    A waste management cost study was initiated to determine the capital and operating costs of three different uranium waste management systems which incorporate current technologies being used in Canadian uranium mining operations. Cost estimates were to be done to a thirty percent level of accuracy and were to include all waste management related costs of a uranium ore processing facility. Each model is based on an annual uranium production of 1,923,000 kg U (5,000,000 lbs U3O8) with a total operating life of 20 years for the facility. The three models, A, B, and C, are based on three different uranium ore grades, 0.10 percent U3O8, 0.475 percent U3O8 and 1.5 percent U3O8 respectively. Yellowcake production is assumed to start in January 1984. Model A is based on a conceptual 7,180 tonne per day uranium ore processing facility and waste management system typical of uranium operations in the Elliot Lake area of northern Ontario with an established infrastructure. Model B is a 1.512 tonne per day operation based on a remote uranium operation typical of the Athabasca Basin properties in northern Saskatchewan. Model C is a 466 tonne per day operation processing a high-grade uranium ore containing arsenic and heavy metal concentrations typical of some northern Saskatchewan deposits

  18. Studying illicit drug trafficking on Darknet markets: Structure and organisation from a Canadian perspective.

    Science.gov (United States)

    Broséus, J; Rhumorbarbe, D; Mireault, C; Ouellette, V; Crispino, F; Décary-Hétu, D

    2016-07-01

    Cryptomarkets are online marketplaces that are part of the Dark Web and mainly devoted to the sale of illicit drugs. They combine tools to ensure anonymity of participants with the delivery of products by mail to enable the development of illicit drug trafficking. Using data collected on eight cryptomarkets, this study provides an overview of the Canadian illicit drug market. It seeks to inform about the most prevalent illicit drugs vendors offer for sale and preferred destination countries. Moreover, the research gives an insight into the structure and organisation of distribution networks existing online. In particular, we provide information about how vendors are diversifying and replicating across marketplaces. We inform on the number of listings each vendor manages, the number of cryptomarkets they are active on and the products they offer. This research demonstrates the importance of online marketplaces in the context of illicit drug trafficking. It shows how the analysis of data available online may elicit knowledge on criminal activities. Such knowledge is mandatory to design efficient policy for monitoring or repressive purposes against anonymous marketplaces. Nevertheless, trafficking on Dark Net markets is difficult to analyse based only on digital data. A more holistic approach for investigating this crime problem should be developed. This should rely on a combined use and interpretation of digital and physical data within a single collaborative intelligence model. PMID:26978791

  19. Using Mobile Technology to Enhance Undergraduate Student Digital Information Literacy Skills: A Canadian Case Study

    Directory of Open Access Journals (Sweden)

    Alice Schmidt Hanbidge

    2015-08-01

    Full Text Available Learning essential information literacy skills through the use of mobile phones is an innovative mlearning pilot project that was collaboratively undertaken in a Canadian university college over the course of two academic terms by faculty and the library staff. The research pilot project involved ninety one undergraduate students in five different classes majoring in psychology, social work, education or social development studies in an attempt to determine the effectiveness of using mobile technology to enhance students’ information literacy skills and learning experiences. Pre and post-test measures, and survey questionnaires generated quantitative and qualitative data that was analyzed to determine the degree of changes in frequency of mobile device information literacy access and fluency in digital literacy skills. The article highlights the Mobile Information Literacy innovation and includes the development and design of the mobile lessons, interactive exercises, and its applications. The study’s main results and conclusions are also discussed. Additionally, the successes and challenges of the pilot to support anytime, anywhere student mobile information literacy eLearning training that engages mobile learners and enhances their learning experience are identified and critically reflected upon to improve the innovation for stage two of the project.

  20. Exchanges of volume, heat and freshwater through the Canadian Arctic Archipelago: a numerical study.

    Science.gov (United States)

    Grivault, Nathan; Hu, Xianmin; Myers, Paul G.

    2016-04-01

    The Canadian Arctic Archipelago (CAA) is a tangle of shallow basins interlinked by narrow straits. It is the main pathway of liquid freshwater from the Arctic Ocean to North Atlantic. It also receives runoff from the Mackenzie River and the glaciers of the different islands that composes the archipelago. This study is based on a set of numerical experiments using a regional configuration of the coupled ocean/sea-ice general circulation model NEMO. We consider a long-term hindcast (1958-2014) as well as the more recent period (2002-2014) using high resolution inter-annual forcing from Environment Canada. We used an improved mapping of runoff to ensure correct amounts of freshwater are added to the system. We evaluate the flow pathways through the CAA, as well as the transport of volume, heat and freshwater. Results are evaluated against observational sections. We also look at the variability and the dynamics driving it. Passive tracers are used to complement the analysis.

  1. Association between recombinant human erythropoietin and quality of life and exercise capacity of patients receiving haemodialysis. Canadian Erythropoietin Study Group.

    OpenAIRE

    1990-01-01

    OBJECTIVE--To determine whether recombinant human erythropoietin improves the quality of life and exercise capacity of anaemic patients receiving haemodialysis. DESIGN--A double blind, randomised, placebo controlled study. SETTING--Eight Canadian university haemodialysis centres. PATIENTS--118 Patients receiving haemodialysis aged 18-75 with haemoglobin concentrations less than 90 g/l, no causes of anaemia other than erythropoietin deficiency, and no other serious diseases. INTERVENTIONS--Pat...

  2. Faculty Members' Perceived Experiences and Impact of Cyberbullying from Students at a Canadian University: A Mixed Methods Study

    OpenAIRE

    Blizard, Lida Marie

    2014-01-01

    This mixed methods study was conducted at a Canadian University in 2012, using an online survey and individual interviews to explore faculty members’ perceived experiences of having aggressive, intimidating, defaming, or threatening message(s) sent to them or about them by students via electronic media. Limited empirical research on this issue within the context of higher education led the researcher to draw from literature on workplace bullying, academic bullying, and K-12 sector cyberbullyi...

  3. Depressive symptoms among immigrant and Canadian born mothers of preterm infants at neonatal intensive care discharge: a cross sectional study

    OpenAIRE

    Ballantyne Marilyn; Benzies Karen M; Trute Barry

    2013-01-01

    Abstract Background Mothers of preterm infants are considered at higher risk for depressive symptoms, higher than for mothers of healthy term infants. Predictors of depressive symptoms in mothers of preterm infants are not yet well established. Immigrant mothers of term infants have higher prevalence of depressive symptoms than Canadian born mothers but the relative prevalence for immigrant mothers of preterm infants is unknown. This study had two aims: (i) to investigate the prevalence of de...

  4. The use of negative binomial modelling in a longitudinal study of gastrointestinal parasite burdens in Canadian dairy cows

    OpenAIRE

    Nødtvedt, Ane; Dohoo, Ian; Sanchez, Javier; Conboy, Gary; DesCôteaux, Luc; Keefe, Greg; Leslie, Ken; Campbell, John

    2002-01-01

    The epidemiology of bovine gastrointestinal nematodes was investigated through a 1-year (October 1999 to September 2000) longitudinal study in 38 Canadian dairy herds from 4 different provinces (Prince Edward Island, Quebec, Ontario, Saskatchewan). For each herd, fecal egg counts from 8 randomly selected animals were performed on a monthly or quarterly basis. Larval cultures were performed once, to determine the species breakdown of the parasites. All producers were interviewed regarding herd...

  5. "Things I did not know”: Retrospectives on a Canadian rural male youth suicide using an instrumental photo voice case study

    OpenAIRE

    Creighton, Genevieve M.; Oliffe, John L.; Lohan, Maria; Ogrodniczuk, John S.; Palm, Emma

    2016-01-01

    In Canada, it is young rural based men who are at the greatest risk for suicide. While there is no consensus on the reasons for this, evidence points to contextual social factors including isolation, lack of confidential services and pressure to uphold restrictive norms of rural masculinity. In this article we share findings drawn from an instrumental photo voice case study to distil factors contributing to the suicide of a young Canadian rural based man. Integrating photo voice methods and i...

  6. Two-year radiographic and clinical outcomes from the Canadian Methotrexate and Etanercept Outcome study in patients with rheumatoid arthritis

    OpenAIRE

    Keystone, Edward C.; Pope, Janet E.; Thorne, J. Carter; Poulin-Costello, Melanie; Phan-Chronis, Krystene; Vieira, Andrew; Haraoui, Boulos

    2015-01-01

    Objective. To evaluate radiographic and clinical outcomes up to 24 months in patients with RA enrolled in the Canadian Methotrexate and Etanercept Outcome study. Methods. In this open-label non-inferiority trial, patients with inadequate response to MTX received etanercept plus MTX for 6 months and then were randomized to either etanercept monotherapy or continued etanercept plus MTX until 24 months. Radiographic data were analysed using the modified total Sharp score (mTSS), joint space narr...

  7. Naturalistic Evaluation of Programs. Parents' Voice in Parent Education Programs

    Directory of Open Access Journals (Sweden)

    Ştefan COJOCARU

    2011-10-01

    Full Text Available The study presents some practical means for carrying out a naturalistic evaluation, a process that has resulted, for instance, in the identification of the profile of the parent educator as defined by the parents attending parent education classes as part of the program “How to become better parents”, implemented by Holt Romania with the support of UNICEF Country Office. Exploring parents’ voices is an advantage in naturalistic evaluation when trying to identify some essential aspects of the program. Based on the grounded theory strategy, this study explores the participants’ subjective representations, being a useful source of information for future development of similar programs. The profile of the parent educator as defined by the parents has several significant characteristics: the educator’s ability to reduce power asymmetry and increase responsiveness, the importance of the educator’s personal traits of character, the role of social and spatial proximity, the importance of the parent educator in personalizing the relationship with institutions etc. The results highlight the ways in which parent educator’s characteristics can significantly contribute to increasing the attendance of such programs.

  8. Evaluating more naturalistic outcome measures

    OpenAIRE

    Bove, Riley; White, Charles C.; Giovannoni, Gavin; Glanz, Bonnie; Golubchikov, Victor; Hujol, Johnny; Jennings, Charles; Langdon, Dawn; Lee, Michelle; Legedza, Anna; Paskavitz, James; Prasad, Sashank; Richert, John; Robbins, Allison; Roberts, Susan

    2015-01-01

    Objective: In this cohort of individuals with and without multiple sclerosis (MS), we illustrate some of the novel approaches that smartphones provide to monitor patients with chronic neurologic disorders in their natural setting. Methods: Thirty-eight participant pairs (MS and cohabitant) aged 18–55 years participated in the study. Each participant received an Android HTC Sensation 4G smartphone containing a custom application suite of 19 tests capturing participant performance and patient-r...

  9. Qualitative Insights from a Canadian Multiinstitutional Research Study: In Search of Meaningful E-learning

    Directory of Open Access Journals (Sweden)

    Lorraine M. Carter

    2014-11-01

    Full Text Available This paper reports the qualitative findings of a mixed methods research study conducted at three Canadian post-secondary institutions. Called the Meaningful E-learning or MEL project, the study was an exploration of the teaching and learning experiences of faculty and students as well as their perceptions of the benefits and challenges of e-learning. Importantly, e-learning was conceptualized as the integration of pedagogy, instructional technology, and the Internet into teaching and learning environments. Based on this definition, participants reflected on e-learning in relation to one or more of the following contexts: face-to-face (f2f classrooms in which instructional technologies (e.g. learning management systems, video and webconferencing, mobile devices, etc. are used; blended or web-enhanced learning environments; and fully online learning environments. Data collected for the study included survey data (n=1377 for students, n=187 for faculty; narrative comments (n=269 for students, n=74 for faculty; and focus groups (n=16 for students, n=33 for faculty. The latter two sets of data comprise the basis of this paper. Four major themes emerged based on the responses of students and faculty. Represented by the acronym HIDI, the themes include human connection (H, IT support (I, design (D, and institutional infrastructure (I. These themes and sub-themes are presented in the paper as well as recommendations for educators and administrators who aspire to make e-learning a pedagogically meaningful experience for both learners and their teachers.

  10. Characterization of long-range transported Canadian biomass burning over Central Europe - A case study

    Science.gov (United States)

    Gross, Silke; Geiss, Alexander; Heimerl, Katharina; Gasteiger, Josef; Freudenthaler, Volker; Weinzierl, Bernadett; Wiegner, Matthias

    2015-04-01

    Aerosols are a major component of the Earth's atmosphere and have substantial impact on the Earth's radiation budget and on the hydrological cycle. Biomass burning smoke is one important component with respect of global climate warming as it is an important source of black carbon, which is a key player in atmospheric heating. As biomass burning smoke layers are often transported over long distances they cannot be considered as local events only but have a global effect. During transport the smoke particles are affected by aging and mixing processes. Thus their microphysical and optical properties change and, as a consequence their effect on the Earth's radiation budget. However, the influence of aging and mixing processes on the particle microphysical and optical properties is still only poorly understood. To improve our knowledge, studies of transport conditions together with measurements of the horizontal and vertical distribution the smoke layers as well as of their microphysical and optical properties are crucial. We present a case study of long-range transported Canadian biomass burning smoke to Central Europe in summer 2013. The smoke layer is characterized by multi-wavelength lidar measurements over Maisach and by continuous Ceilometer measurements over Munich, Germany. Multi-wavelength lidar measurements are an important tool for the characterization of aerosols, as they provide vertically resolved information of their optical properties which serve as input parameters for the determination of microphysical properties of the aerosol layers. Additionally, airborne in-situ measurements of size distribution and black carbon mass concentration onboard the DLR research aircraft Falcon are presented. The source regions and transport conditions are studied using a combination of satellite measurements and model simulations.

  11. Intuitions in Epistemology: Towards a Naturalistic Alternative

    Directory of Open Access Journals (Sweden)

    Kristoffer Ahlstrom

    2009-12-01

    Full Text Available The present paper revisits the main methodological problems with conceptual analysis and considers two attempts to rectify them in terms of prototypes and reflective equilibria, respectively. Finding both wanting for the purposes of epistemological analysis, a naturalistic alternative is then sketched that explores the positive implications of aforementioned problems for the demarcation of the respective roles of intuitions and empirical investigation within three epistemological domains, viz., the evaluation of epistemological hypotheses, the amelioration of epistemic practices, and the construction of a theory of epistemic value.

  12. Using Mobile Technology to Enhance Undergraduate Student Digital Information Literacy Skills: A Canadian Case Study

    Science.gov (United States)

    Hanbidge, Alice Schmidt; Sanderson, Nicole; Tin, Tony

    2015-01-01

    Learning essential information literacy skills through the use of mobile phones is an innovative m-learning pilot project that was collaboratively undertaken in a Canadian university college over the course of two academic terms by faculty and the library staff. The research pilot project involved ninety one undergraduate students in five…

  13. Dental students' perceptions of and attitudes about poverty: a Canadian participatory case study.

    Science.gov (United States)

    Reis, Clarice M R; Rodriguez, Charo; Macaulay, Ann C; Bedos, Christophe

    2014-12-01

    This qualitative case study was conducted in a Canadian dental school using a participatory approach and was based on Paulo Freire's theoretical concept of conscientização, a form of critical consciousness that involves awareness of social reality and fosters action towards social justice. The aim of the study was to understand dental students' perceptions of and attitudes about poverty and dental care provided to people living in poverty. It also examined how these perceptions shape students' plans for their professional careers, as well as their opinions on educational strategies to prepare them to work with poor patients. The sources of data generation were semistructured interviews, participant observations, and document analysis. A deductive-inductive thematic strategy was used to analyze the data. Out of a class of thirty-five senior dental students, the authors interviewed a convenience sample of twelve: five male and seven female. The findings suggest that the students had incipient conscientização about poverty-related themes. They perceived poverty as a distant issue and as the responsibility of the government or of the poor individuals themselves. The students did not have plans to work with patients living in poverty in the future and struggled to envision ways to address these patients' needs other than volunteer work. This research supports the need for academic dental institutions to adopt strategies to increase students' critical consciousness about oral health inequities. Reducing oral health inequities is a matter of social justice, and dental care providers are key actors in this endeavor. PMID:25480275

  14. Models for Canadian unconformity deposits: An important component in metallogenic studies, exploration and mineral resource appraisals

    International Nuclear Information System (INIS)

    Canadian unconformity uranium deposits contain the world's largest high grade concentrations of uranium ores. Two models, a regional metallogenic model and a conceptual deposit model, have been developed from studies of the Athabasca Basin metallogenic province. The regional model, which has been derived from the well documented Cigar Lake - Key Lake and Rabbit Lake - Eagle Point trends and the Carswell Structure, includes specific lithological and structural controls within the large Athabasca intracratonic basin. The deposits are spatially related to Archean granitoid domes, such as the Swanson, Collins Bay and Dominique-Peter, which are flanked by a Lower Proterozoic metasedimentary sequence that contains layers of eucinic rocks. These basement rocks are capped by a regolith. They are uncomfortably overlain by a sequence of undisturbed sediments of the Athabasca Group. The Athabasca Group rocks have been subjected to high-temperature prograde diagenesis, which was followed by retrograde alteration. The deposit model, which has been derived from observations on the Cigar Lake, P2 North, Key Lake, Collins Bay and Cluff Lake deposits, postulates deposition of the metals and associated gangue minerals from highly saline brines at redox fronts. Uranium was transported in hexavalent form and deposited due to reduction to tetravalent form. The mineralization processes took place predominantly at the sub-Athabasca unconformity and, to a lesser degree, a short distance from it in the basement or in the cover rocks. At present these models are used in metallogenic studies, for delineation of new exploration targets, and in mineral potential appraisals of the Athabasca Basin frontier areas. (author). 11 refs, 18 figs

  15. Canadian beef quality audit.

    OpenAIRE

    Van Donkersgoed, J; Jewison, G; M. Mann; Cherry, B; Altwasser, B; Lower, R; Wiggins, K; Dejonge, R; Thorlakson, B; Moss, E.; C. Mills; Grogan, H

    1997-01-01

    A study was conducted in 4 Canadian processing plants in 1995-96 to determine the prevalence of quality defects in Canadian cattle. One percent of the annual number of cattle processed in Canada were evaluated on the processing floor and 0.1% were graded in the cooler. Brands were observed on 37% and multiple brands on 6% of the cattle. Forty percent of the cattle had horns, 20% of which were scurs, 33% were stubs, 10% were tipped, and 37% were full length. Tag (mud and manure on the hide) wa...

  16. A 20-Year Comparison of Football-Related Injuries in American and Canadian Youth Aged 6 to 17 Years: A Replication Study.

    Science.gov (United States)

    Keays, Glenn; Friedman, Debbie; Gagnon, Isabelle

    2016-06-01

    Introduction Little is known about Canadian youth football injuries. The objectives of this study were (a) to contrast the injuries in Canadian and American football players aged 6 to 17 years and (b) compare the injuries sustained during organized football with those in nonorganized football. Methods Using a retrospective cohort design based on data from the Canadian Hospitals Injury Reporting and Prevention Program and the National Electronic Injury Surveillance System a comparison of injuries was made. Results Trends in injuries were comparable. Proportions and odds of injuries were similar, except for a few exceptions. In Canada, more girls were injured and fractures were more prevalent. Compared with nonorganized football, organized football players were older, involved more males, and suffered more traumatic brain injuries and injuries to their lower extremities. Conclusion Canadian and American youth football injuries were similar. The type of football, be it organized or nonorganized, has an impact on injuries. PMID:26316542

  17. A Naturalistic Observation of Social Behaviours during Preschool Drop-Off

    Science.gov (United States)

    Grady, Jessica S.; Ale, Chelsea M.; Morris, Tracy L.

    2012-01-01

    The present study utilised naturalistic observation to assess the impact of parental departure during daily drop-off at preschool on children's settling into daily preschool routines. Forty-six 3-5-year-old children and their parents/caregivers were observed during morning drop-off at preschool. Longer latencies of parent/caregiver leaving were…

  18. The Effects of Prospective Naturalistic Contact on the Stigma of Mental Illness

    Science.gov (United States)

    Couture, Shannon M.; Penn, David L.

    2006-01-01

    The primary aim of this study was to determine whether naturalistic, interpersonal contact with persons with a severe mental illness (SMI) could reduce stigma. Participants from the agency Compeer (which pairs volunteers with people with SMI) were compared to volunteers from a control agency and to nonvolunteer participants from the community on…

  19. An Analysis of Naturalistic Interventions for Increasing Spontaneous Expressive Language in Children with Autism Spectrum Disorder

    Science.gov (United States)

    Lane, Justin D.; Lieberman-Betz, Rebecca; Gast, David L.

    2016-01-01

    The purpose of this review was to identify naturalistic language interventions for increasing spontaneous expressive language (defined in this review as absence of verbal prompt or other verbalization from adults or peers) in young children with autism spectrum disorder. Also, the methodological rigor and effectiveness of each study were evaluated…

  20. Temporal integration windows for naturalistic visual sequences.

    Directory of Open Access Journals (Sweden)

    Scott L Fairhall

    Full Text Available There is increasing evidence that the brain possesses mechanisms to integrate incoming sensory information as it unfolds over time-periods of 2-3 seconds. The ubiquity of this mechanism across modalities, tasks, perception and production has led to the proposal that it may underlie our experience of the subjective present. A critical test of this claim is that this phenomenon should be apparent in naturalistic visual experiences. We tested this using movie-clips as a surrogate for our day-to-day experience, temporally scrambling them to require (re- integration within and beyond the hypothesized 2-3 second interval. Two independent experiments demonstrate a step-wise increase in the difficulty to follow stimuli at the hypothesized 2-3 second scrambling condition. Moreover, only this difference could not be accounted for by low-level visual properties. This provides the first evidence that this 2-3 second integration window extends to complex, naturalistic visual sequences more consistent with our experience of the subjective present.

  1. Naturalistic Cognition: A Research Paradigm for Human-Centered Design

    Science.gov (United States)

    Storkerson, Peter

    2010-01-01

    Naturalistic thinking and knowing, the tacit, experiential, and intuitive reasoning of everyday interaction, have long been regarded as inferior to formal reason and labeled primitive, fallible, subjective, superstitious, and in some cases ineffable. But, naturalistic thinking is more rational and definable than it appears. It is also relevant to…

  2. Social orienting of children with autism to facial expressions and speech: a study with a wearable eye-tracker in naturalistic settings

    OpenAIRE

    SilviaMagrelli; PatrickJermann; JaquelineNadel; FrancoisAnsermet

    2013-01-01

    This study investigates attention orienting to social stimuli in children with Autism Spectrum Conditions (ASC) during dyadic social interactions taking place in real-life settings. We study the effect of social cues that differ in complexity and distinguish between social cues produced by facial expressions of emotion and those produced during speech. We record the children's gazes using a head-mounted eye-tracking device and report on a detailed and quantitative analysis of the mo...

  3. Stereotypic information about drinkers and students' observed alcohol intake: An experimental study on prototype-behavior relations in males and females in a naturalistic drinking context

    NARCIS (Netherlands)

    Teunissen, H.A.; Spijkerman, R.; Larsen, H.; Kremer, K.A.; Kuntsche, E.N.; Gibbons, F.X.; Scholte, R.H.J.; Engels, R.C.M.E.

    2012-01-01

    Background: Cross-sectional and longitudinal research has shown that favorable drinker prototypes (i.e., perceptions about the typical drinker) are related to higher levels of alcohol consumption in adolescents and college students. So far, few studies have experimentally tested the causality of thi

  4. Stereotypic information about drinkers and students' observed alcohol intake: an experimental study on prototype-behavior relations in males and females in a naturalistic drinking context

    NARCIS (Netherlands)

    H.A. Teunissen; R. Spijkerman; H. Larsen; K.A. Kremer; E. Kuntsche; F.X. Gibbons; R.H.J. Scholte; R.C.M.E. Engels

    2012-01-01

    Background: Cross-sectional and longitudinal research has shown that favorable drinker prototypes (i.e., perceptions about the typical drinker) are related to higher levels of alcohol consumption in adolescents and college students. So far, few studies have experimentally tested the causality of thi

  5. Prevalence and correlates of lifetime deliberate self-harm and suicidal ideation in naturalistic outpatients: the Leiden Routine Outcome Monitoring study

    NARCIS (Netherlands)

    Klerk, S. de; Noorden, M.S. van; Giezen, A.E. van; Spinhoven, P.; Hollander-Gijsman, M.E. den; Giltay, E.J.; Speckens, A.E.M.; Zitman, F.G.

    2011-01-01

    BACKGROUND: Deliberate self-harm and suicidal ideation (DSHI) are common phenomena in general and mental health populations. Identifying factors associated with DSHI may contribute to the early identification, prevention and treatment of DSHI. Aims of the study are to determine the prevalence and co

  6. Pan-Canadian assessment of pandemic immunization data collection: study methodology

    Directory of Open Access Journals (Sweden)

    Sikora Christopher A

    2010-06-01

    Full Text Available Abstract Background The collection of individual-level pandemic (H1N1 2009 influenza immunization data was considered important to facilitate optimal vaccine delivery and accurate assessment of vaccine coverage. These data are also critical for research aimed at evaluating the new vaccine's safety and effectiveness. Systems used to collect immunization data include manual approaches in which data are collected and retained on paper, electronic systems in which data are captured on computer at the point of vaccination and hybrid systems which are comprised of both computerized and manual data collection components. This study's objective was to compare the efficiencies and perceptions of data collection methods employed during Canada's pandemic (H1N1 2009 influenza vaccination campaign. Methods/Design A pan-Canadian observational study was conducted in a convenience sample of public health clinics and healthcare institutions during the H1N1 vaccination campaign in the fall of 2009. The study design consisted of three stages: Stage 1 involved passive observation of the site's layout, processes and client flow; Stage 2 entailed timing site staff on 20 clients through five core immunization tasks: i client registration, ii medical history collection, iii medical history review, iv vaccine administration record keeping and v preparation of proof of vaccine administration for the client; in Stage 3, site staff completed a questionnaire regarding perceived usability of the site's data collection approach. Before the national study began, a pilot study was conducted in three seasonal influenza vaccination sites in Ontario, to both test that the proposed methodology was logistically feasible and to determine inter-rater reliability in the measurements of the research staff. Comparative analyses will be conducted across the range of data collection methods with respect to time required to collect immunization data, number and type of individual-level data

  7. Clinical outcomes and costs for people with complex psychosis; a naturalistic prospective cohort study of mental health rehabilitation service users in England

    OpenAIRE

    Killaspy, Helen; Marston, Louise; Green, Nicholas; Harrison, Isobel; Lean, Melanie; Holloway, F.; Jamieson-Craig, Thomas Kern; Leavey, G.; Arbuthnott, Maurice; Koeser, Leonardo Alberto; McCrone, Paul Richard; Omar, Rumana; King, Michael

    2016-01-01

    BackgroundMental health rehabilitation services in England focus on people with complex psychosis. This group tend to have lengthy hospital admissions due to the severity of their problems and, despite representing only 10–20 % of all those with psychosis, they absorb 25–50 % of the total mental health budget. Few studies have investigated the effectiveness of these services and there is little evidence available to guide clinicians working in this area. As part of a programme of research int...

  8. The Noradrenaline Metabolite MHPG Is a Candidate Biomarker from the Manic to the Remission State in Bipolar Disorder I: A Clinical Naturalistic Study

    OpenAIRE

    Masatake Kurita; Satoshi Nishino; Yukio Numata; Yoshiro Okubo; Tadahiro Sato

    2014-01-01

    Remission is the primary goal of treatment for bipolar disorder I (BDI). Metabolites of noradrenaline and dopamine, 3-methoxy-4-hydroxyphenylglycol (MHPG) and homovanillic acid (HVA), respectively, are reduced by treatment with antipsychotics, but whether these phenomena are caused by antipsychotics or by the pathophysiology of BDI is not known. Interactions between brain-derived neurotrophic factor (BDNF) and mood disorders have also been suggested. We conducted a multifaceted study in BDI p...

  9. Role of Cognitive Enhancer Therapy in Alzheimer’s Disease with Concomitant Cerebral White Matter Disease: Findings from a Long-Term Naturalistic Study

    OpenAIRE

    Ng, Kok Pin; Ng, Aloysius; Assam, Pryseley; Heng, Esther; Kandiah, Nagaendran

    2014-01-01

    Background Evidence is lacking for cognitive enhancer therapy in patients with Alzheimer’s disease (AD) and concomitant cerebrovascular disease (mixed AD) as such patients would have been excluded from clinical trials. Earlier studies of mixed AD have focused on large vessel cerebrovascular disease. The influence of small vessel cerebrovascular disease (svCVD) in the form of white matter hyperintensity (WMH) on treatment outcomes in mixed AD has not been addressed. Objective In this long-term...

  10. Intentional forgetting: note-taking as a naturalistic example.

    Science.gov (United States)

    Eskritt, Michelle; Ma, Sierra

    2014-02-01

    In the present study, we examined whether note-taking as a memory aid may provide a naturalistic example of intentional forgetting. In the first experiment, participants played Concentration, a memory card game in which the identity and location of pairs of cards need to be remembered. Before the game started, half of the participants were allowed to study the cards, and the other half made notes that were then unexpectedly taken away. No significant differences emerged between the two groups for remembering identity information, but the study group remembered significantly more location information than did the note-taking group. In a second experiment, we examined whether note-takers would show signs of proactive interference while playing Concentration repeatedly. The results indicated that they did not. The findings suggest that participants adopted an intentional-forgetting strategy when using notes to store certain types of information. PMID:24014168

  11. Switch the itch: a naturalistic follow-up study on the neural correlates of cognitive flexibility in obsessive-compulsive disorder.

    Science.gov (United States)

    Vriend, Chris; de Wit, Stella J; Remijnse, Peter L; van Balkom, Anton J L M; Veltman, Dick J; van den Heuvel, Odile A

    2013-07-30

    Obsessive-compulsive disorder (OCD) is a relatively common psychiatric disorder characterized by intrusive thoughts and behaviors that dominate daily living, like an itch patients cannot ignore. Deficits in executive functioning are common in OCD and are thought to be related to dysfunctional frontal-striatal systems. One of those executive functions is cognitive flexibility, defined as the ability to rapidly switch response strategies following changes in task-relevant information. The temporal stability of cognitive flexibility impairments in OCD has been incompletely investigated since previous studies have suggested both state and trait dependency. In this study, 16 OCD patients performed a functional magnetic resonance imaging version of a task-switching paradigm twice, intervened by a follow-up period of on average 6 months. Results show that functional abnormalities in the dorsal frontal-striatal circuit and anterior cingulate cortex at baseline normalized at follow-up. This change in the recruitment of task-related brain circuits correlated with change in disease severity. These results support the view that the imbalance between the dorsal and ventral frontal-striatal circuits is at least partly state-dependent, and is associated with a reduction in symptom severity. PMID:23693090

  12. Use of inhaled medications and urgent care services. Study of Canadian asthma patients.

    OpenAIRE

    Joyce, D P; McIvor, R. A.

    1999-01-01

    OBJECTIVE: To determine asthma patients' patterns of disease and knowledge of asthma. DESIGN: Telephone survey of patients with diagnosed asthma. SETTING: Residences in 10 Canadian provinces. PARTICIPANTS: Patients with asthma diagnosed by a doctor: 829 men and women with a mean age of 38 +/- 7 years. MAIN OUTCOME MEASURES: Classes of asthma medications, patterns of use, frequency and severity of asthma symptoms use of emergency departments and urgent medical services, participation in asthma...

  13. Talent Management Programmes at British, American and Canadian Universities: Comparative Study

    OpenAIRE

    Boichenko Maryna

    2015-01-01

    The article deals with the peculiarities of talent management programmes implementation at the top British, American and Canadian universities. The essence of the main concepts of research - talent and talent management - has been revealed. Talent management is referred to as the systematic attraction, identification, development, engagement, retention and deployment of those individuals who are of particular value to an organization, either in view of their “high potential” for the future or...

  14. The noradrenaline metabolite MHPG is a candidate biomarker from the manic to the remission state in bipolar disorder I: a clinical naturalistic study.

    Directory of Open Access Journals (Sweden)

    Masatake Kurita

    Full Text Available Remission is the primary goal of treatment for bipolar disorder I (BDI. Metabolites of noradrenaline and dopamine, 3-methoxy-4-hydroxyphenylglycol (MHPG and homovanillic acid (HVA, respectively, are reduced by treatment with antipsychotics, but whether these phenomena are caused by antipsychotics or by the pathophysiology of BDI is not known. Interactions between brain-derived neurotrophic factor (BDNF and mood disorders have also been suggested. We conducted a multifaceted study in BDI patients to ascertain if biological markers are associated with the manic state. Patients with Young Mania Rating Scale (YMRS scores >20 participated in the study. Final analyses involved 24 BDI patients (13 men and 11 women. We used YMRS scores to identify mania stages in individual BDI patients (i.e., manic syndrome, response and remission stages. Statistical analyses were done using one-way repeated-measures analyses of variance (rep-ANOVA throughout manic syndrome, response and remission stages. Plasma concentrations of MHPG and HVA were analyzed by high-performance liquid chromatography with electrochemical detection. Plasma levels of BDNF were measured by sandwich enzyme-linked immunosorbent assay. BDI patients had significantly reduced plasma levels of MHPG throughout manic syndrome, response and remission stages (rep-ANOVA, p = 0.002. Without a case of response state, there was a significant positive correlation between YMRS scores and plasma levels of MHPG (ρ = 0.33, p = 0.033, n = 48. Plasma levels of HVA and BDNF were not significantly altered throughout manic syndrome, response and remission stages. These data suggest that the peripheral level of MHPG (which is associated with noradrenaline levels in the brain could be used as a biomarker for the manic state in BDI. The MHPG level is likely to reflect the clinical characteristics of the manic syndrome in BDI, and noradrenaline may reflect the pathophysiology from manic to remission

  15. I Am Canadian

    DEFF Research Database (Denmark)

    Goddard, Joe

    "I Am Canadian: Immigration and Multiculturalism in the True North" looks at Canadian immigration history from a contemporary point of view. The article scrutinizes recent discussions on dual nationality and what this may mean for Canadianness......."I Am Canadian: Immigration and Multiculturalism in the True North" looks at Canadian immigration history from a contemporary point of view. The article scrutinizes recent discussions on dual nationality and what this may mean for Canadianness....

  16. A naturalistic study of the acceptability and effectiveness of internet-delivered cognitive behavioural therapy for psychiatric disorders in older australians.

    Directory of Open Access Journals (Sweden)

    Louise Mewton

    Full Text Available OBJECTIVES: The current study investigates the acceptability, effectiveness and uptake of internet-delivered cognitive behavioural therapy (iCBT amongst older individuals (>60 years seeking psychiatric treatment in general practice. METHODS: The sample consisted of 2413 (mean age 39.5; range 18-83 years patients prescribed iCBT through This Way Up clinic by their primary care clinician. The intervention consisted of six fully automated, unassisted online lessons specific to four disorders major depression, generalised anxiety disorder, panic disorder or social phobia. Patients were categorised into five age groups (18-29 years, 30-39 years, 40-49 years, 50-59 years, 60 years and above. 225 (9.3% patients were aged over 60 years. Analyses were conducted across the four disorders to ensure sufficient sample sizes in the 60 years and older age group. Age differences in adherence to the six lesson courses were assessed to demonstrate acceptability. Age-based reductions in psychological distress (Kessler Psychological Distress Scale; K10 and disability (the World Health Organisation Disability Assessment Schedule; WHODAS-II were compared to demonstrate effectiveness. To evaluate the uptake of iCBT, the age distribution of those commencing iCBT was compared with the prevalence of these disorders in the 2007 Australian National Survey of Mental Health and Well-Being. RESULTS: Older adults were more likely to complete all six lessons when compared with their younger counterparts. Marginal model analyses indicated that there were significant reductions in the K10 and WHODAS-II from baseline to post-intervention, regardless of age (p<0.001. The measurement occasion by age interactions were not significant, indicating that individuals showed similar reductions in the K10 and WHODAS-II regardless of age. In general, the age distribution of individuals commencing the iCBT courses matched the age distribution of the four diagnoses in the Australian general

  17. PsyGlass: Capitalizing on Google Glass for naturalistic data collection.

    Science.gov (United States)

    Paxton, Alexandra; Rodriguez, Kevin; Dale, Rick

    2015-09-01

    As commercial technology moves further into wearable technologies, cognitive and psychological scientists can capitalize on these devices to facilitate naturalistic research designs while still maintaining strong experimental control. One such wearable technology is Google Glass (Google, Inc.: www.google.com/glass), which can present wearers with audio and visual stimuli while tracking a host of multimodal data. In this article, we introduce PsyGlass, a framework for incorporating Google Glass into experimental work that is freely available for download and community improvement over time (www.github.com/a-paxton/PsyGlass). As a proof of concept, we use this framework to investigate dual-task pressures on naturalistic interaction. The preliminary study demonstrates how designs from classic experimental psychology may be integrated in naturalistic interactive designs with emerging technologies. We close with a series of recommendations for using PsyGlass and a discussion of how wearable technology more broadly may contribute to new or adapted naturalistic research designs. PMID:25893865

  18. Study in Grey and White: Measuring the Impact of the 8Rs Canadian Library Human Resources Study

    Directory of Open Access Journals (Sweden)

    Allison Sivak

    2009-06-01

    Full Text Available Objective – To use the 8Rs Canadian Library Human Resources Study (the 8Rs Study as a test case to develop a model for assessing research impact in LIS. Methods – Three different methods of citation analysis which take into account the changing environment of scholarly communications. These include a ‚manual‛ method of locating citations to the 8Rs Study through a major LIS database, an enhanced-citation tool Google Scholar, and a general Google search to locate Study references in non-scholarly documents Results – The majority of references (82% were found using Google or Google Scholar; the remainder were located via LISA. Each method had strengths and limitations.Conclusion - In-depth citation analysis provides a promising method of understanding the reach of published research. This investigation’s findings suggest the need for improvements in LIS citation tools, as well as digital archiving practices to improve the accessibility of references for measuring research impact. The findings also suggest the merit of researchers and practitioners defining levels of research impact, which will assist researchers in the dissemination of their work.

  19. Depressive symptoms among immigrant and Canadian born mothers of preterm infants at neonatal intensive care discharge: a cross sectional study

    Directory of Open Access Journals (Sweden)

    Ballantyne Marilyn

    2013-01-01

    Full Text Available Abstract Background Mothers of preterm infants are considered at higher risk for depressive symptoms, higher than for mothers of healthy term infants. Predictors of depressive symptoms in mothers of preterm infants are not yet well established. Immigrant mothers of term infants have higher prevalence of depressive symptoms than Canadian born mothers but the relative prevalence for immigrant mothers of preterm infants is unknown. This study had two aims: (i to investigate the prevalence of depressive symptoms in immigrant as compared to Canadian born mothers of preterm infants, and (ii to determine what factors are associated with depressive symptoms in mothers of preterm infants. Methods This is a multi-site, cross sectional study of mothers whose preterm infants required hospitalization in neonatal intensive care unit (NICU. Consecutive eligible mothers (N = 291 were recruited during the week prior to their infant’s NICU discharge. Mothers completed a self-administered questionnaire booklet of validated psychosocial/cultural measures including the Center for Epidemiological Studies Depression Scale (CES-D, Parental Stressor Scale:NICU, General Functioning Subscale of the McMaster Family Assessment Device, Social Support Index, and Vancouver Index of Acculturation; and demographic characteristics questions. Infant characteristics included gestational age, birth weight, sex, singleton/multiple birth, and Score for Neonatal Acute Physiology-II. Results Immigrant mothers (N = 107, when compared to Canadian born mothers (N = 184, reported more depressive symptoms, poorer family functioning, less social support, and less mainstream acculturation. Hierarchical regression for a subsample of 271 mothers indicated that single parent status, high stress, poorer family functioning, and less social support were associated with increased depressive symptoms and accounted for 39% of the variance on the CES-D. Immigrant status did not contribute

  20. Lithofacies control in detrital zircon provenance studies: Insights from the Cretaceous Methow basin, southern Canadian Cordillera

    Science.gov (United States)

    DeGraaff-Surpless, K.; Mahoney, J.B.; Wooden, J.L.; McWilliams, M.O.

    2003-01-01

    High-frequency sampling for detrital zircon analysis can provide a detailed record of fine-scale basin evolution by revealing the temporal and spatial variability of detrital zircon ages within clastic sedimentary successions. This investigation employed detailed sampling of two sedimentary successions in the Methow/Methow-Tyaughton basin of the southern Canadian Cordillera to characterize the heterogeneity of detrital zircon signatures within single lithofacies and assess the applicability of detrital zircon analysis in distinguishing fine-scale provenance changes not apparent in lithologic analysis of the strata. The Methow/Methow-Tyaughton basin contains two distinct stratigraphic sequences of middle Albian to Santonian clastic sedimentary rocks: submarine-fan deposits of the Harts Pass Formation/Jackass Mountain Group and fluvial deposits of the Winthrop Formation. Although both stratigraphic sequences displayed consistent ranges in detrital zircon ages on a broad scale, detailed sampling within each succession revealed heterogeneity in the detrital zircon age distributions that was systematic and predictable in the turbidite succession but unpredictable in the fluvial succession. These results suggest that a high-density sampling approach permits interpretation of finescale changes within a lithologically uniform turbiditic sedimentary succession, but heterogeneity within fluvial systems may be too large and unpredictable to permit accurate fine-scale characterization of the evolution of source regions. The robust composite detrital zircon age signature developed for these two successions permits comparison of the Methow/Methow-Tyaughton basin age signature with known plutonic source-rock ages from major plutonic belts throughout the Cretaceous North American margin. The Methow/Methow-Tyaughton basin detrital zircon age signature matches best with source regions in the southern Canadian Cordillera, requiring that the basin developed in close proximity to the

  1. Talent Management Programmes at British, American and Canadian Universities: Comparative Study

    Directory of Open Access Journals (Sweden)

    Boichenko Maryna

    2015-12-01

    Full Text Available The article deals with the peculiarities of talent management programmes implementation at the top British, American and Canadian universities. The essence of the main concepts of research - talent and talent management - has been revealed. Talent management is referred to as the systematic attraction, identification, development, engagement, retention and deployment of those individuals who are of particular value to an organization, either in view of their “high potential” for the future or because they are fulfilling business/ operation-critical roles. The factors that drive the development of talent management at the universities have been defined. The benefits that can be obtained as a result of talent management programmes implementation in higher education institutions have been pointed out. The differences in talent management programmes implementation at the universities of Great Britain, the USA and Canada have been found out. These differences depend mainly on the human resources policy of the institution represented in its strategic plan. It has been concluded that most top British and American higher education institutions run talent development programmes, but the target categories and forms of their implementation greatly differ. Canadian universities in the human resources policy focus on professional development of staff and faculty, but do not have special talent management programmes. Progressive conceptual ideas of foreign experience that can be used in practice of Ukrainian universities have been considered.

  2. A matched-pair cluster design study protocol to evaluate implementation of the Canadian C-spine rule in hospital emergency departments: Phase III

    Directory of Open Access Journals (Sweden)

    Rowe Brian H

    2007-02-01

    Full Text Available Abstract Background Physicians in Canadian emergency departments (EDs annually treat 185,000 alert and stable trauma victims who are at risk for cervical spine (C-spine injury. However, only 0.9% of these patients have suffered a cervical spine fracture. Current use of radiography is not efficient. The Canadian C-Spine Rule is designed to allow physicians to be more selective and accurate in ordering C-spine radiography, and to rapidly clear the C-spine without the need for radiography in many patients. The goal of this phase III study is to evaluate the effectiveness of an active strategy to implement the Canadian C-Spine Rule into physician practice. Specific objectives are to: 1 determine clinical impact, 2 determine sustainability, 3 evaluate performance, and 4 conduct an economic evaluation. Methods We propose a matched-pair cluster design study that compares outcomes during three consecutive 12-months "before," "after," and "decay" periods at six pairs of "intervention" and "control" sites. These 12 hospital ED sites will be stratified as "teaching" or "community" hospitals, matched according to baseline C-spine radiography ordering rates, and then allocated within each pair to either intervention or control groups. During the "after" period at the intervention sites, simple and inexpensive strategies will be employed to actively implement the Canadian C-Spine Rule. The following outcomes will be assessed: 1 measures of clinical impact, 2 performance of the Canadian C-Spine Rule, and 3 economic measures. During the 12-month "decay" period, implementation strategies will continue, allowing us to evaluate the sustainability of the effect. We estimate a sample size of 4,800 patients in each period in order to have adequate power to evaluate the main outcomes. Discussion Phase I successfully derived the Canadian C-Spine Rule and phase II confirmed the accuracy and safety of the rule, hence, the potential for physicians to improve care. What

  3. Migraine and Despair: Factors Associated with Depression and Suicidal Ideation among Canadian Migraineurs in a Population-Based Study

    Directory of Open Access Journals (Sweden)

    Esme Fuller-Thomson

    2013-01-01

    Full Text Available This study sought to (1 investigate the association between migraine and both depression and suicidal ideation and (2 to identify the factors independently associated with each of these mental health problems among Canadian men and women with migraine. Data were analyzed from the 2005 Canadian Community Health Survey (CCHS. Presence of migraine was assessed by self-report of a health professional diagnosis. Current depression was measured using the CIDI-SF, and suicidal ideation was based on a question about serious consideration of suicide at any point during the respondent's lifetime. Migraineurs were found to have elevated odds of depression (men: OR = 2.02; 95% CI = 1.70, 2.41; women: OR = 1.89; 95% CI = 1.71, 2.10 and suicidal ideation (men: OR = 1.70; 95% CI = 1.55, 1.96; women: OR = 1.72; 95% CI = 1.59, 1.86 even when adjusting for sociodemographic variables and disability status. The odds of depression and suicidal ideation were higher among both genders of migraineurs who were younger, unmarried and had more activity limitations; associations with poverty and race depended on gender and whether the focus was on depression or suicidal ideation. While screening for depression is already recommended for those with migraine, this research helps identify which migraineurs may require more immediate attention, including those who are younger, unmarried, and experiencing limitations in their activities.

  4. Competency-based simulation assessment of resuscitation skills in emergency medicine postgraduate trainees – a Canadian multi-centred study

    Science.gov (United States)

    Dagnone, J. Damon; Hall, Andrew K.; Sebok-Syer, Stefanie; Klinger, Don; Woolfrey, Karen; Davison, Colleen; Ross, John; McNeil, Gordon; Moore, Sean

    2016-01-01

    Background The use of high-fidelity simulation is emerging as a desirable method for competency-based assessment in postgraduate medical education. We aimed to demonstrate the feasibility and validity of a multi-centre simulation-based Objective Structured Clinical Examination (OSCE) of resuscitation competence with Canadian Emergency Medicine (EM) trainees. Method EM postgraduate trainees (n=98) from five Canadian academic centres participated in a high fidelity, 3-station simulation-based OSCE. Expert panels of three emergency physicians evaluated trainee performances at each centre using the Queen’s Simulation Assessment Tool (QSAT). Intraclass correlation coefficients were used to measure the inter-rater reliability, and analysis of variance was used to measure the discriminatory validity of each scenario. A fully crossed generalizability study was also conducted for each examination centre. Results Inter-rater reliability in four of the five centres was strong with a median absolute intraclass correlation coefficient (ICC) across centres and scenarios of 0.89 [0.65–0.97]. Discriminatory validity was also strong (p competence in post-graduate Emergency Medicine trainees. PMID:27103954

  5. Naturalist Intelligence Among the Other Multiple Intelligences [In Bulgarian

    OpenAIRE

    R. Genkov; L. Genkova

    2007-01-01

    The theory of multiple intelligences was presented by Gardner in 1983. The theory was revised later (1999) and among the other intelligences a naturalist intelligence was added. The criteria for distinguishing of the different types of intelligences are considered. While Gardner restricted the analysis of the naturalist intelligence with examples from the living nature only, the present paper considered this problem on wider background including objects and persons of the natural sciences.

  6. Into the field: naturalistic education and the future of conservation.

    Science.gov (United States)

    Hayes, Mark A

    2009-10-01

    Some educational psychologists and researchers have argued that there are multiple ways of being intelligent. In the early 1980s, Howard Gardner presented a theory of multiple intelligences by proposing that humans can be described not by a single kind of intelligence, or intelligence quotient score, but rather by a variety of kinds of intelligence. This idea of considering multiple views of intelligence has helped educators look at intelligence from a less rigid, more expansive perspective. I considered how the relatively new concept of naturalistic intelligence, which is the cognitive potential to process information that is exhibited by expert naturalists, might influence the design of undergraduate biology curricula. Naturalistic intelligence can be fostered in undergraduate biology students by emphasizing the need for well-rounded scientific naturalists; developing curricula that involves students in outdoor inquiry-based projects; and helping students learn how to observe both the natural world and their own learning, skills that are essential to developing expert naturalistic knowledge. Professors, graduate students, and administrators can improve the naturalistic intelligence of undergraduate biology students by giving these students opportunities to be involved in outdoor research. Time spent outdoors alone and among people with expertise in natural history, ecology, and conservation biology will have important influences on the knowledge and skills biology undergraduates learn, the careers they pursue, and the contributions they make to conserving Earth's biodiversity. PMID:19659687

  7. Comparative study on membership legislation in Canadian and Chinese agricultural co-operative laws

    Institute of Scientific and Technical Information of China (English)

    CHU Zhihong; GUO Xiangyu

    2007-01-01

    For centuries, groups of people desiring to supply themselves with goods, to market their products, or to obtain services of various kinds on a co-operative basis, have made increasing use of co-operative associations to achieve these purposes. During the period, legislation designed especially for the incorporation and conduct of such associations has been enacted by different counties.Since a co-operative is established and carried on by and for the use of its members, this essay makes a comparison between Canadian and Chinese co-operative laws in terms of membership in the aspects of qualifications, rights and obligations and withdrawal of membership, so as to probe the function of co-operative legislation and find some enlightment from it.

  8. Studies of cesium and strontium migration in unconsolidated Canadian geological materials

    International Nuclear Information System (INIS)

    Distribution coefficients (Ksub(d)) were measured for cesium and strontium in 16 samples of Canadian unconsolidated geological materials. The samples were collected to cover a wide range of grain size, clay-mineral composition, cation exchange capacity and carbonate mineral content. Distribution coefficients ranged between 102 and 2.0 x 104 ml/g for cesium and between 2.5 and 102 ml/g for strontium, indicating that most unconsolidated geological materials have a substantial ability to retard the migration of cesium, while strontium could generally be expected to be somewhat more mobile. The measured K values were not significantly correlated with the measured soil properties, but appeared to be significantly affected by the background concentration of stable isotopes of the respective radionuclides

  9. Progress in welding studies for Canadian nuclear fuel waste disposal containers

    International Nuclear Information System (INIS)

    This report describes the progress in the development of closure-welding technology for Canadian nuclear fuel waste disposal containers. Titanium, copper and Inconel 625 are being investigated as candidate materials for fabrication of these containers. Gas-tungsten-arc welding, gas metal-arc-welding, resistance-heated diffusion bonding and electron beam welding have been evaluated as candidate closure welding processes. Characteristic weldment properties, relative merits of welding techniques, suitable weld joint configurations and fit-up tolerances, and welding parameter control ranges have been identified for various container designs. Furthermore, the automation requirements for candidate welding processes have been assessed. Progress in the development of a computer-controlled remote gas-shielded arc welding system is described

  10. Dynamics of brain activity underlying working memory for music in a naturalistic condition

    OpenAIRE

    Burunat Perez, Iballa

    2012-01-01

    Working memory (WM) is at the core of any cognitive function as it is necessary for the integration of information over time. Despite WM’s critical role in high-level cognitive functions, its implementation in the neural tissue is poorly understood. Preliminary studies on auditory WM show differences between linguistic and musical memory, leading to the speculation of specific neural networks encoding memory for music. Moreover, in neuroscience WM has not been studied in naturalistic listenin...

  11. Using Naturalistic Driving Data to Examine Age and Gender Differences on Seat Belt Use

    OpenAIRE

    Bao, S.; H. Xiong; SAYER, J; Buonarosa, M. L.

    2014-01-01

    Teens and young drivers are often reported as one driver group that has significantly lower seatbelt use rates than other age groups. Objective This study was designed to address the questions of whether and how seatbelt-use behavior of novice teen drivers is different from young adult drivers and other adult drivers when driving on real roads. Method Driving data from 148 drivers who participated in two previous naturalistic driving studies were further analyzed. The combined dataset represe...

  12. Examination of drivers' cell phone use behavior at intersections by using naturalistic driving data

    OpenAIRE

    H. Xiong; Bao, S.; Kato, K.; SAYER, J

    2014-01-01

    Many driving simulator studies have shown that cell phone use while driving greatly degraded driving performance. In terms of safety analysis, many factors including drivers, vehicles, and driving situations need to be considered. Controlled or simulated studies cannot always account for the full effects of these factors, especially situational factors such as road condition, traffic density, and weather and lighting conditions. Naturalistic driving by its nature provides a natural and realis...

  13. Operational value of ensemble streamflow forecasts for hydropower production: A Canadian case study

    Science.gov (United States)

    Boucher, Marie-Amélie; Tremblay, Denis; Luc, Perreault; François, Anctil

    2010-05-01

    increased hydropower production. The ensemble precipitation forecasts extend from March 1st of 2002 to December 31st of 2003. They were obtained using two atmospheric models, SEF (8 members plus the control deterministic forecast) and GEM (8 members). The corresponding deterministic precipitation forecast issued by SEF model is also used within HYDROTEL in order to compare ensemble streamflow forecasts with their deterministic counterparts. Although this study does not incorporate all the sources of uncertainty, precipitation is certainly the most important input for hydrological modeling and conveys a great portion of the total uncertainty. References: Fortin, J.P., Moussa, R., Bocquillon, C. and Villeneuve, J.P. 1995: HYDROTEL, un modèle hydrologique distribué pouvant bénéficier des données fournies par la télédétection et les systèmes d'information géographique, Revue des Sciences de l'Eau, 8(1), 94-124. Jaun, S., Ahrens, B., Walser, A., Ewen, T. and Schaer, C. 2008: A probabilistic view on the August 2005 floods in the upper Rhine catchment, Natural Hazards and Earth System Sciences, 8 (2), 281-291. Krzysztofowicz, R. 2001: The case for probabilistic forecasting in hydrology, Journal of Hydrology, 249, 2-9. Murphy, A.H. 1994: Assessing the economic value of weather forecasts: An overview of methods, results and issues, Meteorological Applications, 1, 69-73. Mylne, K.R. 2002: Decision-Making from probability forecasts based on forecast value, Meteorological Applications, 9, 307-315. Laio, F. and Tamea, S. 2007: Verification tools for probabilistic forecasts of continuous hydrological variables, Hydrology and Earth System Sciences, 11, 1267-1277. Roulin, E. 2007: Skill and relative economic value of medium-range hydrological ensemble predictions, Hydrology and Earth System Sciences, 11, 725-737. Velazquez, J.-A., Petit, T., Lavoie, A., Boucher, M.-A., Turcotte, R., Fortin, V. and Anctil, F. 2009: An evaluation of the Canadian global meteorological ensemble

  14. Coverage of Jamaica in the U.S. and Canadian Press in 1976: A Study of Press Bias and Effect.

    Science.gov (United States)

    Cuthbert, Marlene; Sparkes, Vernone

    In 1976, Jamaican government officals claimed that their island had received an especially negative press in the United States during 1975 and 1976 with serious consequences for the economy and tourist trade. This accusation was not made about Canadian coverage, with one major exception, and Canadian tourism to Jamaica increased during those years…

  15. Taking the Plunge: Open Access at the "Canadian Journal of Sociology." Case Studies in Open Access Publishing. Number Five

    Science.gov (United States)

    Haggerty, Kevin D.

    2008-01-01

    Introduction: Presents a personal account of the transfer to open access of the leading Canadian journal of sociology. Background: The Canadian Journal of Sociology had established a strong position, internationally, among sociology journals. However, subscriptions were falling as readers increasingly accessed the resource through libraries and a…

  16. Are Canadian Banks Ready for Basel III?

    OpenAIRE

    Imad Kutum; Khaled Hussainey

    2014-01-01

    The purpose of this study is to analyze and test the current liquidity coverage ratio of Canadian banks’, and draw conclusions about the readiness of Canadian banks to meet Basel III regulations. Liquidity coverage ratios for six major Canadian banks were calculated using the liquid assets and liabilities listed on their balance sheets from 2009 to 2013. The actual assets that meet Basel III requirements could not be acquired, as this is private information that does not have to be released u...

  17. Towards a Naturalistic Conceptualisation of Technology Integration in Classroom Practice: the example of school mathematics

    OpenAIRE

    Ruthven, Kenneth

    2011-01-01

    Understanding the challenges of incorporating new technologies into classroom practice calls for the development of naturalistic perspectives that situate their adoption and use within the everyday work of teaching. In this light, recent British and French studies have developed and validated a model of secondary mathematics teachers’ ideals for classroom use of computer-based tools and resources, and identified the crucial role of craft knowledge in realising these ideals in practice. From c...

  18. Analysis and Comparison of Naturalistic Themes in Iranian and Britain Modern Children's Poems

    OpenAIRE

    Shayesteh Ebrahimi; Parvin Saljeghe

    2016-01-01

    Today, children's literature given the concept of childhood, has gained a special status in the studies of humanities. Children's poetry is one of the branches of this type of literature. Naturalistic themes have the highest frequency among the themes of children poems in two countries. The population of this research consists of collections that have been published from 1921 to 2011. Children's literature was born in England in the eighteenth century and before that the first didactic books ...

  19. Opportunities for prevention and intervention with young children: lessons from the Canadian incidence study of reported child abuse and neglect

    Directory of Open Access Journals (Sweden)

    Fallon Barbara

    2013-02-01

    Full Text Available Abstract Background The most effective way to provide support to caregivers with infants in order to promote good health, social, emotional and developmental outcomes is the subject of numerous debates in the literature. In Canada, each province adopts a different approach which range from universal to targeted programs. Nonetheless, each year a group of vulnerable infants is identified to the child welfare system with concerns about their well-being and safety. This study examines maltreatment-related investigations in Canada involving children under the age of one year to identify which factors determine service provision at the conclusion of the investigation. Methods A secondary analysis of the Canadian Incidence Study of Reported Child Abuse and Neglect CIS-2008 (PHAC, 2010 dataset was conducted. Multivariate analyses were conducted to understand the profile of investigations involving infants (n=1,203 and which predictors were significant in the decision to transfer a case to ongoing services at the conclusion of the investigation. Logistic Regression and Classification and Regression Trees (CART were conducted to examine the relationship between the outcome and predictors. Results The results suggest that there are three main sources that refer infants to the Canadian child welfare system: hospital, police, and non-professionals. Infant maltreatment-related investigations involve young caregivers who struggle with poverty, single-parenthood, drug/solvent and alcohol abuse, mental health issues, lack of social supports, and intimate partner violence. Across the three referral sources, primary caregiver risk factors are the strongest predictor of the decision to transfer a case to ongoing services. Conclusions Multivariate analyses indicate that the presence of infant concerns does not predict ongoing service provision, except when the infant is identified with positive toxicology at birth. The opportunity for early intervention and the

  20. Untangling Risk of Maltreatment from Events of Maltreatment: An Analysis of the 2008 Canadian Incidence Study of Reported Child Abuse and Neglect (CIS-2008)

    Science.gov (United States)

    Fallon, Barbara; Trocme, Nico; MacLaurin, Bruce; Sinha, Vandna; Black, Tara

    2011-01-01

    This paper describes the methodological changes that occurred across cycles of the Canadian Incidence Study of Reported Child Abuse and Neglect (CIS), specifically outlining the rationale for tracking investigations of families with children at risk of maltreatment in the CIS-2008 cycle. This paper also presents analysis of data from the CIS-2008…

  1. fMRI Validation of fNIRS Measurements During a Naturalistic Task.

    Science.gov (United States)

    Noah, J Adam; Ono, Yumie; Nomoto, Yasunori; Shimada, Sotaro; Tachibana, Atsumichi; Zhang, Xian; Bronner, Shaw; Hirsch, Joy

    2015-01-01

    We present a method to compare brain activity recorded with near-infrared spectroscopy (fNIRS) in a dance video game task to that recorded in a reduced version of the task using fMRI (functional magnetic resonance imaging). Recently, it has been shown that fNIRS can accurately record functional brain activities equivalent to those concurrently recorded with functional magnetic resonance imaging for classic psychophysical tasks and simple finger tapping paradigms. However, an often quoted benefit of fNIRS is that the technique allows for studying neural mechanisms of complex, naturalistic behaviors that are not possible using the constrained environment of fMRI. Our goal was to extend the findings of previous studies that have shown high correlation between concurrently recorded fNIRS and fMRI signals to compare neural recordings obtained in fMRI procedures to those separately obtained in naturalistic fNIRS experiments. Specifically, we developed a modified version of the dance video game Dance Dance Revolution (DDR) to be compatible with both fMRI and fNIRS imaging procedures. In this methodology we explain the modifications to the software and hardware for compatibility with each technique as well as the scanning and calibration procedures used to obtain representative results. The results of the study show a task-related increase in oxyhemoglobin in both modalities and demonstrate that it is possible to replicate the findings of fMRI using fNIRS in a naturalistic task. This technique represents a methodology to compare fMRI imaging paradigms which utilize a reduced-world environment to fNIRS in closer approximation to naturalistic, full-body activities and behaviors. Further development of this technique may apply to neurodegenerative diseases, such as Parkinson's disease, late states of dementia, or those with magnetic susceptibility which are contraindicated for fMRI scanning. PMID:26132365

  2. Technology assessment and resource allocation for predictive genetic testing: A study of the perspectives of Canadian genetic health care providers

    Directory of Open Access Journals (Sweden)

    Einsiedel Edna

    2009-06-01

    Full Text Available Abstract Background With a growing number of genetic tests becoming available to the health and consumer markets, genetic health care providers in Canada are faced with the challenge of developing robust decision rules or guidelines to allocate a finite number of public resources. The objective of this study was to gain Canadian genetic health providers' perspectives on factors and criteria that influence and shape resource allocation decisions for publically funded predictive genetic testing in Canada. Methods The authors conducted semi-structured interviews with 16 senior lab directors and clinicians at publically funded Canadian predictive genetic testing facilities. Participants were drawn from British Columbia, Alberta, Manitoba, Ontario, Quebec and Nova Scotia. Given the community sampled was identified as being relatively small and challenging to access, purposive sampling coupled with snowball sampling methodologies were utilized. Results Surveyed lab directors and clinicians indicated that predictive genetic tests were funded provincially by one of two predominant funding models, but they themselves played a significant role in how these funds were allocated for specific tests and services. They also rated and identified several factors that influenced allocation decisions and patients' decisions regarding testing. Lastly, participants provided recommendations regarding changes to existing allocation models and showed support for a national evaluation process for predictive testing. Conclusion Our findings suggest that largely local and relatively ad hoc decision making processes are being made in relation to resource allocations for predictive genetic tests and that a more coordinated and, potentially, national approach to allocation decisions in this context may be appropriate.

  3. Protest: The Canadian pulse

    International Nuclear Information System (INIS)

    This popularly written article compares Canadian attitudes to protests against nuclear power to those in the United States. Canadian protesters are more peaceful, expressing their opinions within the law. The article describes the main anti-nuclear groups in Canada and presents the results of public opinion surveys of Canadians on the use of nuclear power for generating electricity. (TI)

  4. Use of synchrotron tomography to image naturalistic anatomy in insects

    Science.gov (United States)

    Socha, John J.; De Carlo, Francesco

    2008-08-01

    Understanding the morphology of anatomical structures is a cornerstone of biology. For small animals, classical methods such as histology have provided a wealth of data, but such techniques can be problematic due to destruction of the sample. More importantly, fixation and physical slicing can cause deformation of anatomy, a critical limitation when precise three-dimensional data are required. Modern techniques such as confocal microscopy, MRI, and tabletop x-ray microCT provide effective non-invasive methods, but each of these tools each has limitations including sample size constraints, resolution limits, and difficulty visualizing soft tissue. Our research group at the Advanced Photon Source (Argonne National Laboratory) studies physiological processes in insects, focusing on the dynamics of breathing and feeding. To determine the size, shape, and relative location of internal anatomy in insects, we use synchrotron microtomography at the beamline 2-BM to image structures including tracheal tubes, muscles, and gut. Because obtaining naturalistic, undeformed anatomical information is a key component of our studies, we have developed methods to image fresh and non-fixed whole animals and tissues. Although motion artifacts remain a problem, we have successfully imaged multiple species including beetles, ants, fruit flies, and butterflies. Here we discuss advances in biological imaging and highlight key findings in insect morphology.

  5. Getting Real: A Naturalistic Methodology for Using Smartphones to Collect Mediated Communications

    Directory of Open Access Journals (Sweden)

    Chad C. Tossell

    2012-01-01

    Full Text Available This paper contributes an intentionally naturalistic methodology using smartphone logging technology to study communications in the wild. Smartphone logging can provide tremendous access to communications data from real environments. However, researchers must consider how it is employed to preserve naturalistic behaviors. Nine considerations are presented to this end. We also provide a description of a naturalistic logging approach that has been applied successfully to collecting mediated communications from iPhones. The methodology was designed to intentionally decrease reactivity and resulted in data that were more accurate than self-reports. Example analyses are also provided to show how data collected can be analyzed to establish empirical patterns and identify user differences. Smartphone logging technologies offer flexible capabilities to enhance access to real communications data, but methodologies employing these techniques must be designed appropriately to avoid provoking naturally occurring behaviors. Functionally, this methodology can be applied to establish empirical patterns and test specific hypotheses within the field of HCI research. Topically, this methodology can be applied to domains interested in understanding mediated communications such as mobile content and systems design, teamwork, and social networks.

  6. Practice Makes Improvement: How Adults with Autism Out-Perform Others in a Naturalistic Visual Search Task

    Science.gov (United States)

    Gonzalez, Cleotilde; Martin, Jolie M.; Minshew, Nancy J.; Behrmann, Marlene

    2013-01-01

    People with autism spectrum disorder (ASD) often exhibit superior performance in visual search compared to others. However, most studies demonstrating this advantage have employed simple, uncluttered images with fully visible targets. We compare the performance of high-functioning adults with ASD and matched controls on a naturalistic luggage…

  7. Naturalistic Effects of Five Days of Bedtime Caffeine Use on Sleep, Next-Day Cognitive Performance, and Mood

    OpenAIRE

    Keenan, Emma K; Tiplady, Brian; Priestley, Caroline M.; Rogers, Peter J.

    2014-01-01

    Background: Disruptive effects of caffeine on sleep have previously been reported, although measures of next-day mood and performance have rarely been included. The present study aims to evaluate the effects of caffeine on sleep and associated next-day effects in a naturalistic field setting.

  8. Aesthetic perception and its minimal content: a naturalistic perspective

    Directory of Open Access Journals (Sweden)

    ArgyrisArnellos

    2014-09-01

    Full Text Available Aesthetic perception is one of the most interesting topics for philosophers and scientists who investigate how it influences our interactions with objects and states of affairs. Over the last few years, several studies have attempted to determine “how aesthetics is represented in an object,” and how a specific feature of an object could evoke the respective feelings during perception. Despite the vast number of approaches and models, we believe that these explanations do not resolve the problem concerning the conditions under which aesthetic perception occurs, and what constitutes the content of these perceptions. Adopting a naturalistic perspective, we here view aesthetic perception as a normative process that enables agents to enhance their interactions with physical and socio-cultural environments. Considering perception as an anticipatory and preparatory process of detection and evaluation of indications of potential interactions (what we call ‘interactive affordances’, we argue that the minimal content of aesthetic perception is an emotionally valued indication of interaction potentiality. Aesthetic perception allows an agent to normatively anticipate interaction potentialities, thus increasing sense making and reducing the uncertainty of interaction. This conception of aesthetic perception is compatible with contemporary evidence from neuroscience, experimental aesthetics, and interaction design. The proposed model overcomes several problems of transcendental, art-centered, and objective aesthetics as it offers an alternative to the idea of aesthetic objects that carry inherent values by explaining ‘the aesthetic’ as emergent in perception within a context of uncertain interaction.

  9. The Networked Naturalist - Mobile devices for Citizen Science

    Science.gov (United States)

    Estrin, D.; Graham, E. A.

    2010-12-01

    Citizen science projects engage individual volunteers or groups to observe, measure, and contribute data to scientific studies. CENS is developing mobile phone and web-based tools for formal and informal observation of ecosystems. We are collaborating with national environmental education campaigns, such as Project BudBurst, and with the National Park Service to increase participation in citizen scientist campaigns and to support park service personnel in day to day data gathering. The overarching goals of the Networked Naturalist set of projects are to enhance participatory learning experiences through citizen science campaigns and to facilitate scientific and environmental data collection. Our experience with volunteers at UCLA and at the National Park Service has demonstrated that mobile phones are an efficient, effective and engaging method for collecting environmental and location data and hold great potential for both raising public awareness of environmental issues and collecting data that is valuable for both ecosystem management and research. CENS is an NSF-funded Science and Technology Center and this project represents collaboration among ecologists, computer scientist, and statisticians. Our mobile applications are free for download on Android and iPhone App stores and the source code is made available through open source licenses.

  10. Scale invariance of temporal order discrimination using complex, naturalistic events.

    Science.gov (United States)

    Kwok, Sze Chai; Macaluso, Emiliano

    2015-07-01

    Recent demonstrations of scale invariance in cognitive domains prompted us to investigate whether a scale-free pattern might exist in retrieving the temporal order of events from episodic memory. We present four experiments using an encoding-retrieval paradigm with naturalistic stimuli (movies or video clips). Our studies show that temporal order judgement retrieval times were negatively correlated with the temporal separation between two events in the movie. This relation held, irrespective of whether temporal distances were on the order of tens of minutes (Exp 1-2) or just a few seconds (Exp 3-4). Using the SIMPLE model, we factored in the retention delays between encoding and retrieval (delays of 24 h, 15 min, 1.5-2.5 s, and 0.5 s for Exp 1-4, respectively) and computed a temporal similarity score for each trial. We found a positive relation between similarity and retrieval times; that is, the more temporally similar two events, the slower the retrieval of their temporal order. Using Bayesian analysis, we confirmed the equivalence of the RT/similarity relation across all experiments, which included a vast range of temporal distances and retention delays. These results provide evidence for scale invariance during the retrieval of temporal order of episodic memories. PMID:25909581

  11. Theoretical Analysis of Canadian Lifelong Education Development

    Directory of Open Access Journals (Sweden)

    Mukan Natalia

    2014-12-01

    Full Text Available In the article, the problem of Canadian lifelong education development has been studied. The main objectives of the article are defined as theoretical analysis of scientific and pedagogical literature which highlights different aspects of the research problem; periods of lifelong education development; and determination of lifelong learning role and importance in modern Canadian society.

  12. Rural Canadian Youth Exposed to Physical Violence

    Science.gov (United States)

    Laye, Adele M.; Mykota, David B.

    2014-01-01

    Exposure to physical violence is an unfortunate reality for many Canadian youth as it is associated with numerous negative psychosocial effects. The study aims to assist in understanding resilience in rural Canadian youth exposed to physical violence. This is accomplished by identifying the importance of protective factors, as measured by the…

  13. Interpretive signs designed to trigger naturalist intelligence at two American zoos

    Science.gov (United States)

    Bryant, Martha

    An investigation of interpretive graphics was conducted in 2005 at two mid-sized AZA-accredited zoos, Lowry Park Zoo, Tampa, Florida and Knoxville Zoo, Knoxville, Tennessee. The Lowry Park Zoo study investigated signs at a red-tailed hawk and sandhill crane exhibit. Combination signs and wordless signs were more effective helping visitors see animals, increasing holding time, and number of engagements than treatments of no signs, or signs with words only. A second study, at Knoxville Zoo, tested combination and wordless signs in a children's zoo, investigating 31 signs at a 3.5-acre exhibit. Comparisons of visitors seeing the animals/using interactive exhibit elements, holding time, and engagement activities, showed wordless signs were more effective than combination signs. Differences in gender ratio, age, group size, and other demographics were not significant. Visit motivation differed between zoos, with visitors from Lowry Park Zoo more often articulating reason for a visit as wanting to see animals. Visitors at Knoxville Zoo most often said they wanted to spend time with family and friends. Differences in potential for naturalist intelligence were probably related to local practices rather than to innate differences in naturalist intelligence. The number of communities in Florida that regulate pet ownership and provide lawn service could account for the lower number of people who have pets and plants. At both institutions, behaviors supported educational theories. The importance of signs as advanced organizers was shown where signs were removed at the bird exhibit at Lowry Park Zoo, with fewer visitors seeing the animals. Social interaction was noted at both zoos, with intra- and inter-group conversations observed. If naturalist intelligence is necessary to see animals, visitors run a continuum. Some are unable to see animals with signs and assistance from other visitors; others see animals with little difficulty. The importance of honing naturalist

  14. Political Affiliation of Canadian Professors

    Directory of Open Access Journals (Sweden)

    M. Reza Nakhaie

    2008-01-01

    Full Text Available The social role of universities has been the subject of a lengthy debate as to whether those who teach in the academy are system-legitimizing conservatives or radicals helping to generate critical thinking that challenges the status quo. The aim of this paper is to evaluate political affiliations of Canadian university professors based on a national survey conducted in 2000. The study shows that Canadian professors’ political affiliation can be identified as either left or right depending on how the political orientation of political parties is conceptualized. University professors tend to vote more for the Liberal Party than other parties, and view it as centrist party. Moreover, the study highlights a complex and non-monolithic picture of the Canadian academy. University professors are not politically homogenous and party vote depends on the prestige of their university, their discipline, gender, ethnicity, marital status, generation, and agreement with liberalism.

  15. Understanding the Limitations of Employer Prevention Programs in Transnational Settings: A Case Study of Women Workers in Canadian-Owned Maquiladoras in Honduras

    OpenAIRE

    Spring, Karen

    2014-01-01

    Due to the failure of current studies of ergonomics programs in transnational factories in Honduras to adequately address the issue of prevention, this study examines how the production process in Canadian-owned factories operating in Honduras mitigate against primary and secondary prevention measures. Using a feminist lens and drawing on grounded theory, this study is based on interviews with seven Honduran women workers suffering from work-related musculoskeletal disorders (WMSDs) and seven...

  16. A Pilot Study of the Effect of a Change in the Scheduling of Canadian Medical Licensing Examinations on Two Cohorts of Students Studying in Ireland

    Directory of Open Access Journals (Sweden)

    Kate Niethammer

    2015-03-01

    Full Text Available Background: The Medical Council of Canada and most Canadian residency programs require international medical graduates seeking training in Ca­nada to pass the Medical Council of Canada Entrance Examination, in addition to the newly established National Collaborative Assessment. In order to facilitate this additional examination, the Medical Council of Canada has altered the suggested examination timeline and examination eligibility criteria. Methods: A cross-sectional survey was sent via an online survey tool to members of the North American Irish Medical Student Association. The survey aimed to elicit differences in the Medical Council of Canada Entrance Examination experience between two cohorts of Canadians studying abroad in Ireland: those who completed the examination before and after the new timeline. Statistical analysis was conducted with independent t-tests and Pearson’s Chi-Square tests using SPSS version 21. Results: Of 24 respondents, 13 had completed the examination after the timeline change. Participants who attended the examination prior to the change achieved higher results (353.8 ± 56.5 than participants who attended the examination after the change (342.3 ± 35.1, although not statistically significant (p=0.56. In the cohort who took the examination after the timeline change, 61.5% of participants expressed discontent with their examination results; 84.6% ‘strongly agreed’ or ‘agreed’ to feeling disadvantaged due to the change. Conclusion: The new Medical Council of Canada examination timeline has had an impact on the examination experience of Canadians studying in Ireland. Simple modifications to the current timeline are warranted to reduce unnecessary disadvantage for this cohort of students applying to postgraduate training in Canada.

  17. Canadian physical activity guidelines for adults: are Canadians aware?

    Science.gov (United States)

    Dale, Leila Pfaeffli; LeBlanc, Allana G; Orr, Krystn; Berry, Tanya; Deshpande, Sameer; Latimer-Cheung, Amy E; O'Reilly, Norm; Rhodes, Ryan E; Tremblay, Mark S; Faulkner, Guy

    2016-09-01

    The present study evaluated awareness of the Canadian Society for Exercise Physiology's 2011 Canadian Physical Activity Guidelines for Adults and assessed correlates. Reported awareness of the physical activity (PA) guidelines was 12.9% (204/1586) of the total sample surveyed. More than half (55%) self-reported meeting PA guidelines of ≥ 150 min of moderate to vigorous PA per week. Awareness of PA guidelines was significantly related to participants' level of PA (χ(2) (1) = 30.63, p < 0.001, φ = -0.14), but not to any demographic variables. PMID:27560541

  18. The burden of cancer risk in Canada's indigenous population: a comparative study of known risks in a Canadian region

    Directory of Open Access Journals (Sweden)

    Elias B

    2011-10-01

    Full Text Available Brenda Elias1, Erich V Kliewer1–3, Madelyn Hall1, Alain A Demers1,2, Donna Turner1,2, Patricia Martens1, Say P Hong1, Lyna Hart4, Caroline Chartrand5, Garry Munro41Faculty of Medicine, Department of Community Health Sciences, University of Manitoba, Winnipeg, MB, Canada; 2CancerCare Manitoba, Winnipeg, MB, Canada; 3British Columbia Cancer Agency, Vancouver, BC, Canada; 4Assembly of Manitoba Chiefs Health Information Research Governance Committee, Winnipeg, MB, Canada; 5Manitoba First Nations Diabetes Integration Project, Winnipeg, MB, CanadaBackground: Canadian First Nations, the largest of the Aboriginal groups in Canada, have had lower cancer incidence and mortality rates than non-Aboriginal populations in the past. This pattern is changing with increased life expectancy, a growing population, and a poor social environment that influences risk behaviors, metabolic conditions, and disparities in screening uptake. These factors alone do not fully explain differences in cancer risk between populations, as genetic susceptibility and environmental factors also have significant influence. However, genetics and environment are difficult to modify. This study compared modifiable behavioral risk factors and metabolic-associated conditions for men and women, and cancer screening practices of women, between First Nations living on-reserve and a non-First Nations Manitoba rural population (Canada.Methods: The study used data from the Canadian Community Health Survey and the Manitoba First Nations Regional Longitudinal Health Survey to examine smoking, binge drinking, metabolic conditions, physical activity, fruit/vegetable consumption, and cancer-screening practices.Results: First Nations on-reserve had significantly higher rates of smoking (P < 0.001, binge drinking (P < 0.001, obesity (P < 0.001 and diabetes (P < 0.001, and less leisure-time physical activity (P = 0.029, and consumption of fruits and vegetables (P < 0.001. Sex differences were also

  19. A Demographic and Career Profile of Canadian Research University Librarians

    Science.gov (United States)

    Fox, David

    2007-01-01

    This paper provides an up-to-date career and demographic profile of Canadian research university librarians by comparing newly derived data from the 8Rs Study: The "Future of Human Resources in Canadian Libraries", with corresponding information from the author's 2006 survey: "The Scholarship of Canadian Research University Librarians", and other…

  20. Transnational archives: the Canadian case

    Directory of Open Access Journals (Sweden)

    Julia Creet

    2011-05-01

    Full Text Available This paper is a brief overview of the concept of the transnational archive as a counterpoint to the idea that a national archive is necessarily a locus of a static idea of nation. The Canadian national archives is used as a case study of an archives that was transnational in its inception, and one that has continued to change in its mandate and materials as a response to patterns in migration and changing notions of multiculturalism as a Canadian federal policy. It introduces the most recent formation of the transnational archive and its denizens: the genealogical archive inhabited by family historians.

  1. Virginia Master Naturalist Program Strategic Planning Report 2015-2020

    OpenAIRE

    Prysby, Michelle D.

    2015-01-01

    This report summarizes the findings from a strategic planning process conducted by the Virginia Master Naturalist program in 2013-2014. The process involved three steps: a comprehensive needs assessment to identify program needs, strategic planning workshops to identify initiatives for addressing those needs, and online voting to prioritize proposed initiatives. 

  2. Case studies: impact of high salt tolerant friction reducers on fresh water conservation in Canadian shale fracturing treatments

    Energy Technology Data Exchange (ETDEWEB)

    Paktinat, J.; O' Neil, B.; Tulissi, M. [Society of Petroleum Engineers (Canada)

    2011-07-01

    Oil and gas extraction in shale reservoirs has seen recent technological innovations, the stimulation of shale reservoirs by fracturing water being one of the major advances for commercially viable extraction. This method used large volumes of fracturing water, injected at high pumping rates, and thus requiring the use of well friction reducers. Economic and environmental concerns are raised because of the large amounts of water involved and the resulting heavy use of chemicals as friction reducers. This paper first introduces shale stimulation principles, and different fracturing water sources, and then investigates the properties of ionic friction reducers in recycled flowback high salted (brines) water, first experimentally in a dynamic re-circulating flow loop, then in a field study in two different Canadian shale formations. Experimental results showed that the efficiency of conventional friction reducers was hindered in brines water, but not for polymer-based reducers, and field studies validated those results. Using brines water reduces the need for fresh water, and less polymer-based reducer is required, rendering shale stimulation more cost-effective and environmentally friendly.

  3. Increased Health Service Utilization Costs in the Year Prior to Institutionalization: Findings from the Canadian Study of Health and Aging

    Science.gov (United States)

    Naslund, John A.; Sauter, Agnes H.; Gutman, Gloria; Beattie, B. Lynn

    2014-01-01

    Objectives The objective of this study was to characterize patterns of formal health service utilization costs during older adults’ transition from community to institutional care. Methods Participants were 127 adults (age ≥ 65) from the British Columbia sample (N = 2,057) of the Canadian Study of Health and Aging who transitioned from community to institutional care between 1991 and 2001. Health service utilization costs were measured using Cost-Per-Day-At-Risk at five time points: > 12 months, 6–12 months, and ≤ 6 months preinstitutionalization, and ≤ 6 months and 6–12 months postinstitutionalization. Cost-Per-Day-At-Risk was measured for Continuing Care, Medical Services Plan, and PharmaCare costs by calculating total health service use over time, divided by the number of days the participant was alive. Results Significant differences in Cost-Per-Day-At-Risk were observed for Continuing Care, Medical Services Plan, and PharmaCare costs over time. All health service utilization costs increased significantly during the 6–12 months and ≤ 6 months prior to institutionalization. Postinstitutionalization Continuing Care costs continued to increase at ≤ 6 months before decreasing at 6–12 months, while decreases occurred for Medical Services Plan and PharmaCare costs relative to preinstitutionalization costs. Conclusions The increases in costs observed during the year prior to institutionalization, characterized by a flurry of health service utilization, provide evidence of distinct cost patterns over the transition period. PMID:24883162

  4. Employers' perceptions and attitudes toward the Canadian national standard on psychological health and safety in the workplace: A qualitative study.

    Science.gov (United States)

    Kunyk, Diane; Craig-Broadwith, Morgan; Morris, Heather; Diaz, Ruth; Reisdorfer, Emilene; Wang, JianLi

    2016-01-01

    The estimated societal and economic costs of mental illness and psychological injury in the workplace is staggering. Governments, employers and other stakeholders have been searching for policy solutions. This qualitative, exploratory study sought to uncover organizational receptivity to a voluntary comprehensive standard for dealing with psychological health and safety in the workplace. A series of five focus groups were conducted in a large Western Canadian city in November 2013. The seventeen participants were from the fields of healthcare, construction/utilities, manufacturing industries, business services, and finance. They worked in positions of management, consulting, human resources, health promotion, health and safety, mediation, and occupational health and represented organizations ranging in size from 20 to 100,000 employees. The findings confirm and illustrate the critical role that psychological health and safety plays across workplaces and occupations. This standard resonated across the represented organizations and fit with their values. This alignment posed challenges with articulating its added value. There appears to be a need for simplified engagement and implementation strategies of the standard that can be tailored to the nuanced differences between types and sizes of industries. It appears that organizations in the most need of improving psychological health and safety may be the least receptive. PMID:26303900

  5. A case study of the televised international newsflow of Raidió Teilifís Éireann and The Canadian Broadcasting Corporation: A comparative content analysis

    OpenAIRE

    Testar, Jason Thomas

    2012-01-01

    The objective of this comparative newsflow study was to analyse the televised international news broadcast in the national public service of Canada and the Republic of Ireland over a thirty-day term. In doing so, a quantitative content analysis comparing the output of two national public service providers (PSB), Raidió Teilifís Éireann (RTÉ) and the Canadian Broadcasting Corporation (CBC) is offered. In identifying the national origin of the international news, those reports utilizing the for...

  6. Adjustable Maintenance Dosing with Budesonide/Formoterol Reduces Asthma Exacerbations Compared with Traditional Fixed Dosing: A Five-Month Multicentre Canadian Study

    OpenAIRE

    J Mark FitzGerlad; Sears, Malcolm R; Louis-Philippe Boulet; Becker, Allan B.; McIvor, Andrew R.; Pierre Ernst; Smiljanic-Georgijev, Natasha M; Joanna SM Lee

    2003-01-01

    BACKGROUND: Adjustable maintenance dosing with budesonide/formoterol in a single inhaler (Symbicort, AstraZeneca, Lund, Sweden) may provide a convenient means of maintaining asthma control with the minimum effective medication level.Objectives: To compare adjustable and fixed maintenance dosing regimens of budesonide/formoterol in asthma.METHODS: This was an open-label, randomized, parallel-group, multicentre, Canadian study of asthma patients (aged 12 years or older, postbronchodilator force...

  7. Low dose ionizing radiation exposure and cardiovascular disease mortality: cohort study based on Canadian national dose registry of radiation workers

    International Nuclear Information System (INIS)

    The purpose of our study was to assess the risk of cardiovascular disease (CVD) mortality in a Canadian cohort of 337 397 individuals (169 256 men and 168 141 women) occupationally exposed to ionizing radiation and included in the National Dose Registry (NDR) of Canada. Material and Methods: Exposure to high doses of ionizing radiation, such as those received during radiotherapy, leads to increased risk of cardiovascular diseases. The emerging evidence of excess risk of CVDs after exposure to doses well below those previously considered as safe warrants epidemiological studies of populations exposed to low levels of ionizing radiation. In the present study, the cohort consisted of employees at nuclear power stations (nuclear workers) as well as medical, dental and industrial workers. The mean whole body radiation dose was 8.6 mSv for men and 1.2 mSv for women. Results: During the study period (1951 - 1995), as many as 3 533 deaths from cardiovascular diseases have been identified (3 018 among men and 515 among women). In the cohort, CVD mortality was significantly lower than in the general population of Canada. The cohort showed a significant dose response both among men and women. Risk estimates of CVD mortality in the NDR cohort, when expressed as excess relative risk per unit dose, were higher than those in most other occupational cohorts and higher than in the studies of Japanese atomic bomb survivors. Conclusions: The study has demonstrated a strong positive association between radiation dose and the risk of CVD mortality. Caution needs to be exercised when interpreting these results, due to the potential bias introduced by dosimetry uncertainties, the possible record linkage errors, and especially by the lack of adjustment for non-radiation risk factors. (authors)

  8. Canadian Postcolonialism: Recovering British Roots

    Science.gov (United States)

    Doughty, Howard A.

    2005-01-01

    The field of Postcolonial Studies is one of the academic fashions that has arisen in an attempt to amend or replace radical theories of social power since the alleged discrediting of Marxism. The Canadian case is more ambiguous. Postcolonialism, already an essentially contested concept, is especially conflicted where Canada is concerned. Canada…

  9. Long-term exposure to fine particulate matter air pollution and the risk of lung cancer among participants of the Canadian National Breast Screening Study.

    Science.gov (United States)

    Tomczak, Anna; Miller, Anthony B; Weichenthal, Scott A; To, Teresa; Wall, Claus; van Donkelaar, Aaron; Martin, Randall V; Crouse, Dan Lawson; Villeneuve, Paul J

    2016-11-01

    Recently, air pollution has been classified as a carcinogen largely on the evidence of epidemiological studies of lung cancer. However, there have been few prospective studies that have evaluated associations between fine particulate matter (PM2.5 ) and cancer at lower concentrations. We conducted a prospective analysis of 89,234 women enrolled in the Canadian National Breast Screening Study between 1980 and 1985, and for whom residential measures of PM2.5 could be assigned. The cohort was linked to the Canadian Cancer Registry to identify incident lung cancers through 2004. Surface PM2.5 concentrations were estimated using satellite data. Cox proportional hazards models were used to characterize associations between PM2.5 and lung cancer. Hazard ratios (HRs) and 95% confidence intervals (CIs) computed from these models were adjusted for several individual-level characteristics, including smoking. The cohort was composed predominantly of Canadian-born (82%), married (80%) women with a median PM2.5 exposure of 9.1 µg/m(3) . In total, 932 participants developed lung cancer. In fully adjusted models, a 10 µg/m(3) increase in PM2.5 was associated with an elevated risk of lung cancer (HR: 1.34; 95% CI = 1.10, 1.65). The strongest associations were observed with small cell carcinoma (HR: 1.53; 95% CI = 0.93, 2.53) and adenocarcinoma (HR: 1.44; 95% CI = 1.06, 1.97). Stratified analyses suggested increased PM2.5 risks were limited to those who smoked cigarettes. Our findings are consistent with previous epidemiological investigations of long-term exposure to PM2.5 and lung cancer. Importantly, they suggest associations persist at lower concentrations such as those currently found in Canadian cities. PMID:27380650

  10. Barriers and supports to implementation of MDI/spacer use in nine Canadian pediatric emergency departments: a qualitative study

    Directory of Open Access Journals (Sweden)

    Graham Ian D

    2009-10-01

    Full Text Available Abstract Background Despite recent research supporting the use of metered dose inhalers with spacer devices (MDI/spacers in pediatric emergency departments (PEDs for acute exacerbations of asthma, uptake of this practice has been slow. The objectives of this study were to determine the barriers and supports to implementing MDI/spacer research and to identify factors associated with early and late adoption of MDI/spacers in Canadian PEDs. Methods Using a comparative case study design, we classified nine tertiary care pediatric hospital PEDs based on their stage of implementation. Data were collected using focus group interviews with physicians, registered nurses (RNs, and respiratory therapists (RTs, and individual interviews with both patient care and medical directors at each site. Initial coding was based on the Ottawa Model of Research Use (OMRU categories of elements known to influence the uptake of innovations. Results One hundred and fifty healthcare professionals from nine different healthcare institutions participated in this study. Lack of leadership in the form of a research champion, a lack of consensus about the benefits of MDI/spacers among staff, perceived resistance from patients/parents, and perceived increased cost and workload associated with MDI/spacer use were the most prevalent barriers to the adoption of the MDI/spacer. Common strategies used by early-adopting sites included the active participation of all professional groups in the adoption process in addition to a well-planned and executed educational component for staff, patients, and families. Early adopter sites were also more likely to have the MDI/spacer included in a clinical protocol/pathway. Conclusion Potential barriers and supports to implementation have been identified that will help EDs adopt MDI/spacer use. Future interventions intended to increase MDI/spacer use in PEDs will need to be sensitive to the barriers identified in this study.

  11. Spatiotemporal air pollution exposure assessment for a Canadian population-based lung cancer case-control study

    Directory of Open Access Journals (Sweden)

    Hystad Perry

    2012-04-01

    Full Text Available Abstract Background Few epidemiological studies of air pollution have used residential histories to develop long-term retrospective exposure estimates for multiple ambient air pollutants and vehicle and industrial emissions. We present such an exposure assessment for a Canadian population-based lung cancer case-control study of 8353 individuals using self-reported residential histories from 1975 to 1994. We also examine the implications of disregarding and/or improperly accounting for residential mobility in long-term exposure assessments. Methods National spatial surfaces of ambient air pollution were compiled from recent satellite-based estimates (for PM2.5 and NO2 and a chemical transport model (for O3. The surfaces were adjusted with historical annual air pollution monitoring data, using either spatiotemporal interpolation or linear regression. Model evaluation was conducted using an independent ten percent subset of monitoring data per year. Proximity to major roads, incorporating a temporal weighting factor based on Canadian mobile-source emission estimates, was used to estimate exposure to vehicle emissions. A comprehensive inventory of geocoded industries was used to estimate proximity to major and minor industrial emissions. Results Calibration of the national PM2.5 surface using annual spatiotemporal interpolation predicted historical PM2.5 measurement data best (R2 = 0.51, while linear regression incorporating the national surfaces, a time-trend and population density best predicted historical concentrations of NO2 (R2 = 0.38 and O3 (R2 = 0.56. Applying the models to study participants residential histories between 1975 and 1994 resulted in mean PM2.5, NO2 and O3 exposures of 11.3 μg/m3 (SD = 2.6, 17.7 ppb (4.1, and 26.4 ppb (3.4 respectively. On average, individuals lived within 300 m of a highway for 2.9 years (15% of exposure-years and within 3 km of a major industrial emitter for 6.4 years (32% of exposure-years. Approximately 50

  12. Feasibility and utility of mapping disease risk at the neighbourhood level within a Canadian public health unit: an ecological study

    Directory of Open Access Journals (Sweden)

    Wanigaratne Susitha

    2010-05-01

    Full Text Available Abstract Background We conducted spatial analyses to determine the geographic variation of cancer at the neighbourhood level (dissemination areas or DAs within the area of a single Ontario public health unit, Wellington-Dufferin-Guelph, covering a population of 238,326 inhabitants. Cancer incidence data between 1999 and 2003 were obtained from the Ontario Cancer Registry and were geocoded down to the level of DA using the enhanced Postal Code Conversion File. The 2001 Census of Canada provided information on the size and age-sex structure of the population at the DA level, in addition to information about selected census covariates, such as average neighbourhood income. Results Age standardized incidence ratios for cancer and the prevalence of census covariates were calculated for each of 331 dissemination areas in Wellington-Dufferin-Guelph. The standardized incidence ratios (SIR for cancer varied dramatically across the dissemination areas. However, application of the Moran's I statistic, a popular index of spatial autocorrelation, suggested significant spatial patterns for only two cancers, lung and prostate, both in males (p Conclusion This paper demonstrates the feasibility and utility of a systematic approach to identifying neighbourhoods, within the area served by a public health unit, that have significantly higher risks of cancer. This exploratory, ecologic study suggests several hypotheses for these spatial patterns that warrant further investigations. To the best of our knowledge, this is the first Canadian study published in the peer-reviewed literature estimating the risk of relatively rare public health outcomes at a very small areal level, namely dissemination areas.

  13. Three-Year Outcomes of a Canadian Multicenter Study of Accelerated Partial Breast Irradiation Using Conformal Radiation Therapy

    Energy Technology Data Exchange (ETDEWEB)

    Berrang, Tanya S., E-mail: tberrang@bccancer.bc.ca [British Columbia Cancer Agency-Vancouver Island, BC (Canada); University of British Columbia, BC (Canada); Olivotto, Ivo [British Columbia Cancer Agency-Vancouver Island, BC (Canada); University of British Columbia, BC (Canada); Kim, Do-Hoon [Juravinski Cancer Centre, Ontario (Canada); McMaster University, Ontario (Canada); Nichol, Alan [British Columbia Cancer Agency-Vancouver Centre, BC (Canada); University of British Columbia, BC (Canada); Cho, B.C. John [Princess Margaret Hospital, Ontario (Canada); University of Toronto, Ontario (Canada); Mohamed, Islam G. [British Columbia Cancer Agency-Southern Interior, BC (Canada); University of British Columbia, BC (Canada); Parhar, Tarnjit [British Columbia Cancer Agency-Vancouver Centre, BC (Canada); University of British Columbia, BC (Canada); Wright, J.R. [Juravinski Cancer Centre, Ontario (Canada); McMaster University, Ontario (Canada); Truong, Pauline [British Columbia Cancer Agency-Vancouver Island, BC (Canada); University of British Columbia, BC (Canada); Tyldesley, Scott [British Columbia Cancer Agency-Vancouver Centre, BC (Canada); University of British Columbia, BC (Canada); Sussman, Jonathan [Juravinski Cancer Centre, Ontario (Canada); McMaster University, Ontario (Canada); Wai, Elaine [British Columbia Cancer Agency-Vancouver Island, BC (Canada); University of British Columbia, BC (Canada); Whelan, Tim [Juravinski Cancer Centre, Ontario (Canada); McMaster University, Ontario (Canada)

    2011-12-01

    Purpose: To report 3-year toxicity, cosmesis, and efficacy of a multicenter study of external beam, accelerated partial breast irradiation (APBI) for early-stage breast cancer. Methods and Materials: Between March 2005 and August 2006, 127 women aged {>=}40 years with ductal carcinoma in situ or node-negative invasive breast cancer {<=}3 cm in diameter, treated with breast-conserving surgery achieving negative margins, were accrued to a prospective study involving five Canadian cancer centers. Women meeting predefined dose constraints were treated with APBI using 3 to 5 photon beams, delivering 35 to 38.5 Gy in 10 fractions, twice a day, over 1 week. Patients were assessed for treatment-related toxicities, cosmesis, and efficacy before APBI and at specified time points for as long as 3 years after APBI. Results: 104 women had planning computed tomography scans showing visible seromas, met dosimetric constraints, and were treated with APBI to doses of 35 Gy (n = 9), 36 Gy (n = 33), or 38.5 Gy (n = 62). Eighty-seven patients were evaluated with minimum 3-year follow-up after APBI. Radiation dermatitis, breast edema, breast induration, and fatigue decreased from baseline levels or stabilized by the 3-year follow-up. Hypopigmentation, hyperpigmentation, breast pain, and telangiectasia slightly increased from baseline levels. Most toxicities at 3 years were Grade 1. Only 1 patient had a Grade 3 toxicity with telangiectasia in a skin fold inside the 95% isodose. Cosmesis was good to excellent in 86% (89/104) of women at baseline and 82% (70/85) at 3 years. The 3-year disease-free survival was 97%, with only one local recurrence that occurred in a different quadrant away from the treated site and two distant recurrences. Conclusions: At 3 years, toxicity and cosmesis were acceptable, and local control and disease-free survival were excellent, supporting continued accrual to randomized APBI trials.

  14. Universal values of Canadian astronauts

    Science.gov (United States)

    Brcic, Jelena; Della-Rossa, Irina

    2012-11-01

    Values are desirable, trans-situational goals, varying in importance, that guide behavior. Research has demonstrated that universal values may alter in importance as a result of major life events. The present study examines the effect of spaceflight and the demands of astronauts' job position as life circumstances that affect value priorities. We employed thematic content analysis for references to Schwartz's well-established value markers in narratives (media interviews, journals, and pre-flight interviews) of seven Canadian astronauts and compared the results to the values of National Aeronautics and Space Administration (NASA) and Russian Space Agency (RKA) astronauts. Space flight did alter the level of importance of Canadian astronauts' values. We found a U-shaped pattern for the values of Achievement and Tradition before, during, and after flight, and a linear decrease in the value of Stimulation. The most frequently mentioned values were Achievement, Universalism, Security, and Self-Direction. Achievement and Self Direction are also within the top 4 values of all other astronauts; however, Universalism was significantly higher among the Canadian astronauts. Within the value hierarchy of Canadian astronauts, Security was the third most frequently mentioned value, while it is in seventh place for all other astronauts. Interestingly, the most often mentioned value marker (sub-category) in this category was Patriotism. The findings have important implications in understanding multi-national crew relations during training, flight, and reintegration into society.

  15. Management of return-to-work programs for workers with musculoskeletal disorders: a qualitative study in three Canadian provinces.

    Science.gov (United States)

    Baril, R; Clarke, J; Friesen, M; Stock, S; Cole, D

    2003-12-01

    In this qualitative research project, researchers in three Canadian provinces explored the perceptions of many different actors involved in return-to-work (RTW) programs for injured workers, studying their views on successful RTW strategies and barriers to/facilitators of the RTW process, then analyzing the underlying dynamics driving their different experiences. Each research team recruited actors in a variety of different workplaces and key informants in the RTW system, and used a combination of in-depth, semi-structured interviews and focus groups to collect data, which were coded using an open coding system. Analysis took a social constructionist perspective. The roles and mandates of the different groups of actors (injured workers; other workplace actors; actors outside the workplace), while sometimes complementary, could also differ, leading to tension and conflict. Characteristics of injured workers described as influencing RTW success included personal and sociodemographic factors, beliefs and attitudes, and motivation. Human resources managers and health care professionals tended to attribute workers' motivation to their individual characteristics, whereas injured workers, worker representatives and health and safety managers described workplace culture and the degree to which workers' well-being was considered as having a strong influence on workers' motivation. Some supervisors experienced role conflict when responsible for both production quotas and RTW programs, but difficulties were alleviated by innovations such as consideration of RTW program responsibilities in the determination of production quotas and in performance evaluations. RTW program success seemed related to labor-management relations and top management commitment to Health and Safety. Non-workplace issues included confusion stemming from the compensation system itself, communication difficulties with some treating physicians, and role conflict on the part of physicians wishing to

  16. A Canadian multicenter, double-blind study of paroxetine and fluoxetine in major depressive disorder

    NARCIS (Netherlands)

    Chouinard, G; Saxena, B; Belanger, MC; Ravindran, A; Bakish, D; Beauclair, L; Morris, P; Nair, NPV; Manchanda, R; Reesal, R; Remick, R; O'Neill, MC

    1999-01-01

    Background: Recent studies have suggested clinical differences among selective serotonin reuptake inhibitors. In a 12-week randomized, multicenter, double-blind trial, the antidepressant and anxiolytic efficacy of the selective serotonin reuptake inhibitors paroxetine and fluoxetine was compared in

  17. Occupational exposures and non-Hodgkin's lymphoma: Canadian case-control study

    OpenAIRE

    Spinelli John J; Dosman James A; McDuffie Helen H; Karunanayake Chandima P; Pahwa Punam

    2008-01-01

    Abstract Background The objective was to study the association between Non-Hodgkin's Lymphoma (NHL) and occupational exposures related to long held occupations among males in six provinces of Canada. Methods A population based case-control study was conducted from 1991 to 1994. Males with newly diagnosed NHL (ICD-10) were stratified by province of residence and age group. A total of 513 incident cases and 1506 population based controls were included in the analysis. Conditional logistic regre...

  18. Markets for Canadian oil

    International Nuclear Information System (INIS)

    This conference presentation presented charts and graphs on the market for Canadian oil. Graphs included crude oil and natural gas prices and heavy oil discount differential. Graphs depicting heavy oil economics such as bitumen blending with condensate were also included along with global crude oil reserves by country. Information on oil sands projects in the Athabasca, Peace River, and Cold Lake deposits was presented along with graphs on oil sands supply costs by recovery type; Canadian production for conventional, oil sands and offshore oil; new emerging oil sands crude types; and 2003 market demand by crude type in the United States and Canada. Maps included Canada and United States crude oil pipelines; western Canadian crude oil markets; long term oil pipeline expansion projects; Canadian and United States crude oil pipeline alternatives; and potential tanker markets for Canadian oil sands production. Lastly, the presentation provided graphs on 2003 refinery crude demand and California market demand. tabs., figs

  19. Machine analysis of facial behaviour: Naturalistic and dynamic behaviour

    OpenAIRE

    Pantic, M.

    2009-01-01

    This article introduces recent advances in the machine analysis of facial expressions. It describes the problem space, surveys the problem domain and examines the state of the art. Two recent research topics are discussed with particular attention: analysis of facial dynamics and analysis of naturalistic (spontaneously displayed) facial behaviour. Scientific and engineering challenges in the field in general, and in these specific subproblem areas in particular, are discussed and recommendati...

  20. Toward a Naturalistic Foundation of the Social Contract

    OpenAIRE

    Cordes, Christian; Schubert, Christian

    2005-01-01

    This paper delivers a step toward a naturalistic foundation of the social contract. While mainstream social contract theory is based on an original position model that is defined in an aprioristic way, we endogenize its key elements, i.e., develop them out of the individuals' moral common sense. To this end, the biological and social basis of moral intuitions and empathy are explored. In this context, a key adaptation during evolution was the one that enabled humans to understand conspecifics...

  1. Radiation processing technology for cosmetics: a report on a Canadian study

    International Nuclear Information System (INIS)

    For several years some cosmetic raw materials and finished products have been successfully treated with irradiation to control microbial growth. Basic studies have been initiated to test the successful application of irradiation to a raw material or finished product in the cosmetics industry. Acceptance of this technology by industry and by regulatory agencies, is dependent upon the correct application of the technology and documenting the results of carefully controlled studies. A short list of raw materials was selected on which the immediate test work was undertaken. It includes talc, starch, gelatin and bentonite. This will increase confidence and expertise in this technology. (author)

  2. Motivation to Study Core French: Comparing Recent Immigrants and Canadian-Born Secondary School Students

    Science.gov (United States)

    Mady, Callie J.

    2010-01-01

    As the number of Allophone students attending public schools in Canada continues to increase (Statistics Canada, 2008), it is clear that a need exists in English-dominant areas to purposefully address the integration of these students into core French. I report the findings of a mixed-method study that was conducted to assess and compare the…

  3. Calcium Nutrition Perceptions among Food Bank Users: A Canadian Case Study

    Science.gov (United States)

    Johnson, Shanthi; Hawkins, Nicki

    2010-01-01

    The present study examined the differences in the food bank users' perceptions related to calcium nutrition across sex and employment status using a cross-sectional, prospective design at a large food bank in Canada. A total of 197 individuals participated for a response rate of 97%. A structured survey was developed and pilot tested before it was…

  4. The Canadian experience with risperidone for the treatment of schizophrenia: an overview.

    OpenAIRE

    Iskedjian, M; Hux, M; Remington, G J

    1998-01-01

    OBJECTIVE: To summarize published data to date by Canadian authors and from Canadian sources on risperidone, a novel neuroleptic indicated in the management of schizophrenia and related psychotic disorders. It was introduced in Canada in 1993. DATA SOURCES: A MEDLINE search was performed using "risperidone" as a keyword. Three Canadian journals were also searched manually. STUDY SELECTION: Articles published between January 1991 and June 1996 by Canadian authors or involving Canadian patients...

  5. Laterality of hand function in naturalistically housed chimpanzees (Pan troglodytes).

    Science.gov (United States)

    Fletcher, Alison W; Weghorst, Jennifer A

    2005-05-01

    Studies of laterality of hand function in chimpanzees (Pan troglodytes) have the potential to tell us about the origins of handedness in Homo sapiens. However, the data are confusing, with discrepancies present between studies done in the field and the laboratory: the former show wild chimpanzees to be unlateralised at the population level, while the latter show captive chimpanzees as lateralised at the population level. This study of 26 semi-free ranging chimpanzees of Chester Zoo, UK, aimed to investigate a situation between the wild and captivity and provided ethological data for 43 categories of spontaneous manual use and 14 categories of tool use. Other variables recorded were subordinate hand activity, whether the subject was arboreal or terrestrial, and the identity of the subject. Using switching focal subject sampling, 23,978 bouts of hand use and 1,090 bouts of tool use were recorded. No population-level handedness was present for manual non-tool use activities in the naturalistically housed chimpanzees of Chester Zoo in a similar way to studies of wild chimpanzees. However, about half of the individuals were lateralised to one side or the other for the foraging behaviours of pick up, eat, and pluck. Using a modified version of McGrew and Marchant's (1997) Laterality Framework, these results are comparable to some wild and captive populations for similar foraging tasks. Bimanuality was rare and thus prevented comparison with captive experimental studies that have reported population right handedness. Behaviour involving contact with water elicited stronger lateralisation. Chester chimpanzees were more likely to exhibit hand preferences for manual tasks with increasing age but there were no effects of sex or rearing history on hand specialisations in adult individuals. Lateralisation was biased in tool use, which evoked significant left hand preferences in half the individuals, with no effect of age. Results are discussed comparatively with reference to

  6. Canadian beef quality audit.

    Science.gov (United States)

    Van Donkersgoed, J; Jewison, G; Mann, M; Cherry, B; Altwasser, B; Lower, R; Wiggins, K; Dejonge, R; Thorlakson, B; Moss, E; Mills, C; Grogan, H

    1997-01-01

    A study was conducted in 4 Canadian processing plants in 1995-96 to determine the prevalence of quality defects in Canadian cattle. One percent of the annual number of cattle processed in Canada were evaluated on the processing floor and 0.1% were graded in the cooler. Brands were observed on 37% and multiple brands on 6% of the cattle. Forty percent of the cattle had horns, 20% of which were scurs, 33% were stubs, 10% were tipped, and 37% were full length. Tag (mud and manure on the hide) was observed on 34% of the cattle. Bruises were found on 78% of the carcasses, 81% of which were minor in severity. Fifteen percent of the bruises were located on the round, 29% on the loin, 40% on the rib, 16% on the chuck, and 0.02% on the brisket. Grubs were observed in 0.02% of the steers, and injection sites were observed in 1.3% of whole hanging carcasses. Seventy percent of the livers were passed for human food and 14% for pet food; 16% were condemned. Approximately 71% of the liver condemnations were due to liver abscesses. Four percent of the heads, 6% of the tongues, and 0.2% of whole carcasses were condemned. The pregnancy rate in female cattle was approximately 6.7%. The average hot carcass weight was 357 kg (s = 40) in steers, 325 kg (s = 41) in heifers, 305 kg (s = 53) in cows, 388 kg (s = 62) in virgin bulls and 340 kg (s = 39) in mature bulls. The average ribeye area in all cattle was 84 cm2 (s = 12); range 29 cm2 to 128 cm2. Grade fat was highly variable and averaged 9 mm (s = 4) for steers and heifers, 6 mm (s = 6) for cows, 5 mm (s = 1) for virgin bulls, and 4 mm (s = 0.5) for mature bulls. The average lean meat yield was 59.7% in cattle (s = 3.4); range 39% to 67%. One percent of the carcasses were devoid of marbling, 1% were dark cutters, and 0.05% of the steer carcasses were staggy. Six percent of the carcasses had poor conformation, 3.7% were underfinished, and 0.7% were overfinished. Yellow fat was observed in 4% of the carcasses; 10% of carcasses were

  7. The Search for Meaningful E-Learning at Canadian Universities: A Multi-Institutional Research Study

    Science.gov (United States)

    Salyers, Vincent; Carter, Lorraine; Carter, Alanna; Myers, Sue; Barrett, Penelope

    2014-01-01

    While e-learning is now characterized by a past and trends within that past, there continues to be uncertainty about how e-learning is defined and conceptualized, whether or not we like e-learning, and whether or not it is as meaningful to us as face to face learning. The purpose of this study was to document the e-learning perceptions of students…

  8. Risk Factors for Fracture in Diabetes: The Canadian Multicentre Osteoporosis Study

    OpenAIRE

    Fraser, Lisa-Ann; Papaioannou, Alexandra; Adachi, Jonathan D.; Ma, Jinhui; Thabane, Lehana

    2013-01-01

    Objective. Individuals with diabetes have been found to be at increased risk of nontraumatic fracture. However, within the diabetic population, how to distinguish who is at the highest risk and warranting therapy has remained elusive. Design. Cross-sectional analysis of a national population-based cohort study. Patients. Men and women over the age of 50 with diabetes from across Canada. Measurements. Logistic regression analysis to identify diabetes specific factors associated with a history ...

  9. South Asian Canadian experiences of depression

    OpenAIRE

    Grewal, Amarjit

    2010-01-01

    This narrative research study explored the socio-cultural context surrounding depression through semi-structured interviews with six South Asian Canadian participants, who self identified as having experienced depression. The study sought to expand on the knowledge of depression and South Asian Canadians by considering the roles of the family, the community, and the culture in the experiences of depression. Thematic analysis of the participant interviews resulted in five major themes: the exp...

  10. Occupational exposures and non-Hodgkin's lymphoma: Canadian case-control study

    Directory of Open Access Journals (Sweden)

    Spinelli John J

    2008-08-01

    Full Text Available Abstract Background The objective was to study the association between Non-Hodgkin's Lymphoma (NHL and occupational exposures related to long held occupations among males in six provinces of Canada. Methods A population based case-control study was conducted from 1991 to 1994. Males with newly diagnosed NHL (ICD-10 were stratified by province of residence and age group. A total of 513 incident cases and 1506 population based controls were included in the analysis. Conditional logistic regression was conducted to fit statistical models. Results Based on conditional logistic regression modeling, the following factors independently increased the risk of NHL: farmer and machinist as long held occupations; constant exposure to diesel exhaust fumes; constant exposure to ionizing radiation (radium; and personal history of another cancer. Men who had worked for 20 years or more as farmer and machinist were the most likely to develop NHL. Conclusion An increased risk of developing NHL is associated with the following: long held occupations of faer and machinist; exposure to diesel fumes; and exposure to ionizing radiation (radium. The risk of NHL increased with the duration of employment as a farmer or machinist.

  11. Effects of neurofeedback on adult patients with psychiatric disorders in a naturalistic setting.

    Science.gov (United States)

    Cheon, Eun-Jin; Koo, Bon-Hoon; Seo, Wan-Seok; Lee, Jun-Yeob; Choi, Joong-Hyeon; Song, Shin-Ho

    2015-03-01

    Few well-controlled studies have considered neurofeedback treatment in adult psychiatric patients. In this regard, the present study investigates the characteristics and effects of neurofeedback on adult psychiatric patients in a naturalistic setting. A total of 77 adult patients with psychiatric disorders participated in this study. Demographic data and neurofeedback states were retrospectively analyzed, and the effects of neurofeedback were evaluated using clinical global impression (CGI) and subjective self-rating scales. Depressive disorders were the most common psychiatric disorders (19; 24.7 %), followed by anxiety disorders (18; 23.4 %). A total of 69 patients (89.6 %) took medicine, and the average frequency of neurofeedback was 17.39 ± 16.64. Neurofeedback was applied to a total of 39 patients (50.6 %) more than 10 times, and 48 patients (62.3 %) received both β/SMR and α/θ training. The discontinuation rate was 33.8 % (26 patients). There was significant difference between pretreatment and posttreatment CGI scores (anxiety, and inattention (<.001). This is a naturalistic study in a clinical setting, and has several limitations, including the absence of a control group and a heterogenous sample. Despite these limitations, the study demonstrates the potential of neurofeedback as an effective complimentary treatment for adult patients with psychiatric disorders. PMID:25740085

  12. Interventions performed by community pharmacists in one Canadian province: a cross-sectional study

    Directory of Open Access Journals (Sweden)

    Young SW

    2012-12-01

    Full Text Available Stephanie W Young, Lisa D Bishop, Amy ConwaySchool of Pharmacy, Memorial University of Newfoundland, St John's, Newfoundland and Labrador, CanadaPurpose: Interventions made by pharmacists to resolve issues when filling a prescription ensure the quality, safety, and efficacy of medication therapy for patients. The purpose of this study was to provide a current estimate of the number and types of interventions performed by community pharmacists during processing of prescriptions. This baseline data will provide insight into the factors influencing current practice and areas where pharmacists can redefine and expand their role.Patients and methods: A cross-sectional study of community pharmacist interventions was completed. Participants included third-year pharmacy students and their pharmacist preceptor as a data collection team. The team identified all interventions on prescriptions during the hours worked together over a 7-day consecutive period. Full ethics approval was obtained.Results: Nine student–pharmacist pairs submitted data from nine pharmacies in rural (n = 3 and urban (n = 6 centers. A total of 125 interventions were documented for 106 patients, with a mean intervention rate of 2.8%. The patients were 48% male, were mostly ≥18 years of age (94%, and 86% had either public or private insurance. Over three-quarters of the interventions (77% were on new prescriptions. The top four types of problems requiring intervention were related to prescription insurance coverage (18%, drug product not available (16%, dosage too low (16%, and missing prescription information (15%. The prescriber was contacted for 69% of the interventions. Seventy-two percent of prescriptions were changed and by the end of the data collection period, 89% of the problems were resolved.Conclusion: Community pharmacists are impacting the care of patients by identifying and resolving problems with prescriptions. Many of the issues identified in this study were related

  13. A study of the temporal changes recorded by ERTS and their geological significance. [Canadian Arctic

    Science.gov (United States)

    Moore, H. D.; Gregory, A. F.

    1974-01-01

    The temporal changes that are recorded by ERTS were evaluated for an area around Bathurst Inlet in the North West Territories. The seasons represented by the images included: early winter, spring, early summer, summer, and fall. Numerous surface characteristics (vegetation, drainage patterns, surface texture, lineament systems and topographic relief, etc.) were used to relate the change in observable features with the different seasons. It was found that the time of year when an observation is made has a strong control over the amount and type of information that can be derived by an experienced interpreter. It was concluded that a detailed study of temporal changes is an important part of any ERTS interpretation for geology.

  14. A Canadian Study toward Changing Local Practice in the Diagnosis of Pediatric Celiac Disease

    Directory of Open Access Journals (Sweden)

    Seema Rajani

    2016-01-01

    Full Text Available Background. The European Society for Pediatric Gastroenterology, Hepatology and Nutrition endorses serological diagnosis (SD for pediatric celiac disease (CD. The objective of this study was to pilot SD and to prospectively evaluate gastrointestinal permeability and mucosal inflammation at diagnosis and after one year on the gluten-free diet (GFD. We hypothesized that SD would be associated with similar short term outcomes as ED. Method. Children, 3–17 years of age, referred for possible CD were eligible for SD given aTTG level ≥200 U/mL, confirmed by repeat aTTG and HLA haplotypes. Gastrointestinal permeability, assessed using sugar probes, and inflammation, assessed using fecal calprotectin (FC, at baseline and after one year on a GFD were compared to patients who had ED. Results. Enrolled SD (n=40 and ED (n=48 patients had similar demographics. ED and SD groups were not different in baseline lactulose: mannitol ratio (L : M (0.049 versus 0.034; p=0.07, fractional excretion of sucrose (%FES; 0.086 versus 0.092; p=0.44, or fecal calprotectin (FC; 89.6 versus 51.4; p=0.05. At follow-up, urine permeability improved and was similar between groups, L : M (0.022 versus 0.025; p=0.55 and %FES (0.040 versus 0.047; p=0.87 (p>0.05. FC improved but remained higher in the SD group (37.1 versus 15.9; p=0.04. Conclusion. Patients on the GFD showed improved intestinal permeability and mucosal inflammation regardless of diagnostic strategy. This prospective study supports that children diagnosed by SD have resolving mucosal disease early after commencing a GFD.

  15. Dynamically-downscaled probabilistic projections of precipitation changes: A Canadian case study.

    Science.gov (United States)

    Wang, Xiuquan; Huang, Guohe; Baetz, Brian W

    2016-07-01

    In this study, plausible changes in annual and seasonal precipitation over Ontario, Canada in response to global warming are investigated through a regional climate modeling approach. A high-resolution regional climate model ensemble based upon the Providing REgional Climates for Impacts Studies (PRECIS) model is developed to help explore the possible outcomes of future climate. A Bayesian hierarchical model is then employed to quantify the uncertainties involved in the modeling results and obtain probabilistic projections of precipitation changes at grid point scales. The results show that the projected changes in annual precipitation exhibit a certain degree of spatial variability with the median changes mostly bounded by 0% and 20%, implying that the annual precipitation over Ontario is more likely to increase in the context of global warming. Specifically, the mean changes in annual precipitation for 2030s and 2050s would be ~7.5%, while the annual precipitation for 2080s is likely to increase by an average of ~12.5%. By contrast, the spatial variability of seasonal precipitation changes is more significant, especially for the changes in spring precipitation which may vary from -40% in south and 50% in north. It is reported that there would be a continuous increasing trend in winter, spring, and autumn precipitation from 2030s to 2080s by 5-30%, but summer precipitation is likely to decrease by 5% or even higher to the end of this century. Furthermore, our results suggest that the larger the biases in historical simulations, the more uncertain the future projections will be. PMID:27035925

  16. Assessment of the toxicity of a substance under Canadian environmental protection act, a case study. Polycyclic aromatic hydrocarbons

    Energy Technology Data Exchange (ETDEWEB)

    Nadon, B.; Germain, A.; Coillie, R. van [Environment Canada, Montreal (Canada)

    1995-12-31

    The Canadian Environmental Protection Act (CEPA) proclaimed in 1988 requires the Canadian Ministers of the Environment and of National Health and Welfare to assess the toxicity of different substances. A Priority Substances List containing 44 substances was developed and their assessments had to determine if they were `toxic`, according to the CEPA definition. This definition states that `a substance is toxic if it is entering or may enter the environment in a quantity or concentration or under conditions (a) having or that may have an immediate or long-term harmful effect on the environment, (b) constituting or that may constitute a danger to the environment on which human life depends; or (c) constituting or that may constitute a danger in Canada to human life of health.` This presentation use the assessment of the polycyclic aromatic hydrocarbons (PAHs) as an example of this procedure. (author)

  17. Giving the Slip: A Study of the Format and Content of Date Due Slips in Canadian Public Libraries

    Directory of Open Access Journals (Sweden)

    Jean T Hung

    2014-11-01

    Full Text Available There is potential for library date due slips to contain personal information (e.g., names that compromises patron privacy. A survey was conducted of fifty-five Canadian English language public library systems to determine what sort of information is being printed on date due slips. While it was discovered that personal information was sometimes included, it was most often in the form of the borrower’s library card number, an almost anonymous identifier. The most commonly included information had to do with library services such as the name of the library, the titles of items borrowed, and the due date. Respondents cited patron privacy as the main reason for not including personal patron information. It appears that Canadian public libraries are aware of the importance of maintaining confidentiality in regard to library user records, at least in terms of the content of date due slips.

  18. A study of institutional origins and change in a Canadian urban commons

    Directory of Open Access Journals (Sweden)

    James P. Robson

    2015-09-01

    Full Text Available Kenora is a small city located in northwestern Ontario, Canada. The study presented here focuses on Tunnel Island, 300 acres of forested land adjacent to Kenora’s downtown. The island is used and valued by both city residents and members of three nearby Ojibway nations. As a multiple-use, common-pool resource accessed by different groups for a range of non-extractive activities, the site has become an experiment in multicultural commons governance, and presents an excellent opportunity to examine the origins and development of institutions for managing collective environmental resources in an urban setting. Using participant observation, internet- and field-based user surveys, and semi-structured interviews, our research finds that grassroots ‘governance’ of the site is emerging through subtle processes of individual and social construction, with the strategies and norms (codes of conduct employed by users providing relative harmony on the trails, which suggests functioning commons institutions. Nevertheless, values-based and epistemic tensions exist among users, pointing to governance challenges for planned joint management of the site, and specifically the need to develop formal, legitimate, and yet flexible and inclusive arrangements that can operate in conjunction with the social practice of existing users.

  19. Understanding Vaccine Hesitancy in Canada: Results of a Consultation Study by the Canadian Immunization Research Network.

    Science.gov (United States)

    Dubé, Eve; Gagnon, Dominique; Ouakki, Manale; Bettinger, Julie A; Guay, Maryse; Halperin, Scott; Wilson, Kumanan; Graham, Janice; Witteman, Holly O; MacDonald, Shannon; Fisher, William; Monnais, Laurence; Tran, Dat; Gagneur, Arnaud; Guichon, Juliet; Saini, Vineet; Heffernan, Jane M; Meyer, Samantha; Driedger, S Michelle; Greenberg, Joshua; MacDougall, Heather

    2016-01-01

    "Vaccine hesitancy" is a concept now frequently used in vaccination discourse. The increased popularity of this concept in both academic and public health circles is challenging previously held perspectives that individual vaccination attitudes and behaviours are a simple dichotomy of accept or reject. A consultation study was designed to assess the opinions of experts and health professionals concerning the definition, scope, and causes of vaccine hesitancy in Canada. We sent online surveys to two panels (1- vaccination experts and 2- front-line vaccine providers). Two questionnaires were completed by each panel, with data from the first questionnaire informing the development of questions for the second. Our participants defined vaccine hesitancy as an attitude (doubts, concerns) as well as a behaviour (refusing some / many vaccines, delaying vaccination). Our findings also indicate that both vaccine experts and front-line vaccine providers have the perception that vaccine rates have been declining and consider vaccine hesitancy an important issue to address in Canada. Diffusion of negative information online and lack of knowledge about vaccines were identified as the key causes of vaccine hesitancy by the participants. A common understanding of vaccine hesitancy among researchers, public health experts, policymakers and health care providers will better guide interventions that can more effectively address vaccine hesitancy within Canada. PMID:27257809

  20. Contact allergens in persons with leg ulcers: a Canadian study in contact sensitization.

    Science.gov (United States)

    Smart, Victoria; Alavi, Afsaneh; Coutts, Pat; Fierheller, Marjorie; Coelho, Sunita; Linn Holness, D; Sibbald, R Gary

    2008-09-01

    Individuals with chronic leg ulcers often develop contact allergic reactions to topical preparations used to treat their wounds and the surrounding skin. The objective of this study was to determine the frequency of positive patch test responses to common allergens in patients with leg ulcers or venous disease. A case series of 100 consecutive, consenting patients with chronic venous disease and other causes of leg ulcers that were available for patch testing were enrolled. The patients were tested with 38 common allergens, including those most relevant to leg ulcers. A total of 46% of the patients had at least 1 positive patch test response. Multiple reactions in the same patient were common. The most frequent groups of sensitizers were fragrances, lanolin, antibacterial agents, and rubber-related allergens. Though the prevalence of positive patch test reactions is high in this population, it is lower than commonly reported. This may be the result of clinical practice that considered the avoidance of common sensitizers in the management of patients with leg ulcers. PMID:18757387

  1. Sampling Ozone Exposure of Canadian Forests at Different Scales: Some Case Studies

    Directory of Open Access Journals (Sweden)

    R.M. Cox

    2001-01-01

    Full Text Available The use of passive samplers in extensive monitoring, such as that used in national forest health monitoring plots, indicates that these devices are able to determine both spatial and temporal differences in ozone exposure of the plots. This allows for categorisation of the plots and the potential for cause-effect analysis of certain forest health responses. Forest exposure along a gradient of air pollution deposition demonstrates large variation in accumulated exposures. The efficacy of using passive samplers for in situ monitoring of forest canopy exposure was also demonstrated. The sampler data produced weak relationships with ozone values from the nearest �continuous� monitor, even though data from colocated samplers showed strong relationships. This spatial variation and the apparent effect of elevation on ozone exposure demonstrate the importance of topography and tree canopy characteristics in plant exposure on a regional scale. In addition, passive sampling may identify the effects of local pollutant gases, such as NO, which may scavenge ozone locally only to increase the production of this secondary pollutant downwind, as atmospheric reactions redress the equilibrium between concentrations of this precursor and those of the generated ozone. The use of passive samplers at the stand level is able to resolve vertical profiles within the stand and edge effects that are important in exposure of understorey and ground flora. Recent case studies using passive samplers to determine forest exposure to ozone indicate a great potential for the development of spatial models on a regional, landscape, and stand level scale.

  2. Understanding Vaccine Hesitancy in Canada: Results of a Consultation Study by the Canadian Immunization Research Network

    Science.gov (United States)

    Dubé, Eve; Gagnon, Dominique; Ouakki, Manale; Bettinger, Julie A.; Guay, Maryse; Halperin, Scott; Wilson, Kumanan; Graham, Janice; Witteman, Holly O.; MacDonald, Shannon; Fisher, William; Monnais, Laurence; Tran, Dat; Gagneur, Arnaud; Guichon, Juliet; Saini, Vineet; Heffernan, Jane M.; Meyer, Samantha; Driedger, S. Michelle; Greenberg, Joshua; MacDougall, Heather

    2016-01-01

    “Vaccine hesitancy” is a concept now frequently used in vaccination discourse. The increased popularity of this concept in both academic and public health circles is challenging previously held perspectives that individual vaccination attitudes and behaviours are a simple dichotomy of accept or reject. A consultation study was designed to assess the opinions of experts and health professionals concerning the definition, scope, and causes of vaccine hesitancy in Canada. We sent online surveys to two panels (1- vaccination experts and 2- front-line vaccine providers). Two questionnaires were completed by each panel, with data from the first questionnaire informing the development of questions for the second. Our participants defined vaccine hesitancy as an attitude (doubts, concerns) as well as a behaviour (refusing some / many vaccines, delaying vaccination). Our findings also indicate that both vaccine experts and front-line vaccine providers have the perception that vaccine rates have been declining and consider vaccine hesitancy an important issue to address in Canada. Diffusion of negative information online and lack of knowledge about vaccines were identified as the key causes of vaccine hesitancy by the participants. A common understanding of vaccine hesitancy among researchers, public health experts, policymakers and health care providers will better guide interventions that can more effectively address vaccine hesitancy within Canada. PMID:27257809

  3. Experimental results of JAERI in the Canadian HT field release study of June 10, 1987

    International Nuclear Information System (INIS)

    A tritium gas (HT) release study was performed in Chalk River Nuclear Laboratories, Ontario, Canada, on June 10, 1987. About 3.5 x 1012 Bq (96 Ci) of HT gas was released to an experimental field over 30 minutes from an outlet placed at 1 m height from the ground surface. From measurements of air, soil and pine needle samples collected during the extended period of 5 days after initiation of the HT release, the following findings were obtained. HT gas was deposited in the soil through diffusion into the soil and conversion to HTO by microbial activity therein. The concentration ratio of HTO to HT in the air during the release period tended to increase with downwind distance and was 4.1 x 10-4 at 400 m. Soil measurements showed that HT gas was deposited in the soils as HTO, mostly in the top 5 cm soils and its deposition velocities to the soils ranged from 1.6 x 10-4 to 3.0 x 10-4 m/s. A low deposition velocity of -5 m/s was measured for the silty loam with low microbial activity. The deposition velocities for the coarse sands were comparable to those for the very fine sandy loam. The deposition velocities for resuspended HTO to the silty loam, ethylene glycol and water were 2.4 x 10-2, 1.5 x 10-2 and 2.3 x 10-2 m/s, respectively. Pine needle measurement showed that HT deposition was negligible as compared with HTO deposition. Due to deposition of air HTO, the tissue-free-water-tritium concentration increased with time and reached a peak concentration in 5 hours. This fact suggested that vapor exchange between air and vegetation was an important process. Uptake of HTO by roots was seen from about 50 hours after the end of the HT release. (author)

  4. A case study of a transported bromine explosion event in the Canadian high arctic

    Science.gov (United States)

    Zhao, X.; Strong, K.; Adams, C.; Schofield, R.; Yang, X.; Richter, A.; Friess, U.; Blechschmidt, A.-M.; Koo, J.-H.

    2016-01-01

    Ozone depletion events in the polar troposphere have been linked to extremely high concentrations of bromine, known as bromine explosion events (BEE). However, the optimum meteorological conditions for the occurrence of these events remain uncertain. On 4-5 April 2011, a combination of both blowing snow and a stable shallow boundary layer was observed during a BEE at Eureka, Canada (86.4°W, 80.1°N). Measurements made by a Multi-Axis Differential Optical Absorption Spectroscopy spectrometer were used to retrieve BrO profiles and partial columns. During this event, the near-surface BrO volume mixing ratio increased to ~20 parts per trillion by volume, while ozone was depleted to ~1 ppbv from the surface to 700 m. Back trajectories and Global Ozone Monitoring Experiment-2 satellite tropospheric BrO columns confirmed that this event originated from a bromine explosion over the Beaufort Sea. From 30 to 31 March, meteorological data showed high wind speeds (24 m/s) and elevated boundary layer heights (~800 m) over the Beaufort Sea. Long-distance transportation (~1800 km over 5 days) to Eureka indicated strong recycling of BrO within the bromine plume. This event was generally captured by a global chemistry-climate model when a sea-salt bromine source from blowing snow was included. A model sensitivity study indicated that the surface BrO at Eureka was controlled by both local photochemistry and boundary layer dynamics. Comparison of the model results with both ground-based and satellite measurements confirmed that the BEE observed at Eureka was triggered by transport of enhanced BrO from the Beaufort Sea followed by local production/recycling under stable atmospheric shallow boundary layer conditions.

  5. Binge Drinking among 12-to-14-Year-Old Canadians: Findings from a Population-Based Study

    OpenAIRE

    Esme Fuller-Thomson; Tamara Grundland; Sheridan, Matthew P.; Cathy Sorichetti

    2014-01-01

    Purpose. This study’s objective is to document which factors are associated with binge drinking behaviour in a population-based sample of Canadian youth aged 12 to 14. Middle school is a key period in which binge drinking behaviour is initiated. Binge drinking is an important risk factor for alcohol-related injuries, accidental death, unsafe sexual behaviour, and substance abuse problems. Understanding the drinking patterns of this population can serve to better inform prevention programs and...

  6. An exploratory study on the consequences and contextual factors of intimate partner violence among immigrant and Canadian-born women

    OpenAIRE

    Du Mont, Janice; Forte, Tonia

    2012-01-01

    Objective To compare immigrant and Canadian-born women on the physical and psychological consequences of intimate partner violence (IPV), as well as examine important sociodemographic, health and social support and network factors that may shape their experiences of abuse. Method National, population-based, cross-sectional survey conducted in 2009. Participants 6859 women reported contact with a current or former partner in the previous 5 years, of whom 1480 reported having experienced emotio...

  7. Occurrence of 13 volatile organic compounds in foods from the Canadian total diet study.

    Science.gov (United States)

    Cao, Xu-Liang; Sparling, Melissa; Dabeka, Robert

    2016-01-01

    Volatile organic compounds (VOCs) are ubiquitous in the environment due to evaporation and incomplete combustion of fuels, use of consumer and personal care products, etc. and they can accumulate in foods. Some VOCs in foods can also be formed during food processing and preparation and migrate from food packaging. In this pilot study, a GC-MS method based on headspace solid-phase microextraction (SPME) was validated and used to analyse selected individual foods which can be consumed directly and 153 different total diet composite food samples for 13 VOCs. Vinyl chloride was not detected in any of the 153 composite food samples, while the other 12 VOCs were detected at various frequencies, with m-xylene being the most frequently detected (in 151 of the 153 samples), followed by toluene (145), 1,3,5-trimethylbenzene (140), ethylbenzene (139), styrene (133), 1,2,4-trimethylbenzene (122), benzene (96), p-dichlorobenzene (95), n-butylbenzene (55), chloroform (45), naphthalene (45) and trichloroethylene (31). Concentrations of the 12 VOCs in most of the food composite samples were low, with the 90th percentiles from 1.6 ng g(-1) for n-butylbenzene to 20 ng g(-1) for toluene. However, some VOCs were detected at higher levels with maxima, for example, of 948 ng g(-1) for m-xylene and 320 ng g(-1) for ethylbenzene in chewing gum, 207 ng g(-1) for styrene and 157 ng g(-1) for toluene in herbs and spices. VOCs were detected at higher levels in most of the individual food items than their corresponding composite samples, for example, the average chloroform concentration in the individual canned soft drinks was 20 ng g(-1) compared with 3.0 ng g(-1) in their composite, and the average toluene concentration in the individual canned citrus juice was 96 ng g(-1) compared with 0.68 ng g(-1) in their composite. Thus, for determination of VOCs in foods which can be consumed directly, their individual food items should be analysed whenever possible for accurate

  8. An Open-Source Strategy for Documenting Events: The Case Study of the 42nd Canadian Federal Election on Twitter

    Directory of Open Access Journals (Sweden)

    Nick Ruest

    2016-04-01

    Full Text Available This article examines the tools, approaches, collaboration, and findings of the Web Archives for Historical Research Group around the capture and analysis of about 4 million tweets during the 2015 Canadian Federal Election. We hope that national libraries and other heritage institutions will find our model useful as they consider how to capture, preserve, and analyze ongoing events using Twitter. While Twitter is not a representative sample of broader society - Pew research shows in their study of US users that it skews young, college-educated, and affluent (above $50,000 household income – Twitter still represents an exponential increase in the amount of information generated, retained, and preserved from 'everyday' people. Therefore, when historians study the 2015 federal election, Twitter will be a prime source.On August 3, 2015, the team initiated both a Search API and Stream API collection with twarc, a tool developed by Ed Summers, using the hashtag #elxn42. The hashtag referred to the election being Canada's 42nd general federal election (hence 'election 42' or elxn42. Data collection ceased on November 5, 2015, the day after Justin Trudeau was sworn in as the 42nd Prime Minister of Canada. We collected for a total of 102 days, 13 hours and 50 minutes. To analyze the data set, we took advantage of a number of command line tools, utilities that are available within twarc, twarc-report, and jq. In accordance with the Twitter Developer Agreement & Policy, and after ethical deliberations discussed below, we made the tweet IDs and other derivative data available in a data repository. This allows other people to use our dataset, cite our dataset, and enhance their own research projects by drawing on #elxn42 tweets. Our analytics included: breaking tweet text down by day to track change over time; client analysis, allowing us to see how the scale of mobile devices affected medium interactions; URL analysis, comparing both to Archive

  9. Treatment of bipolar disorder in the Netherlands and concordance with treatment guidelines : study protocol of an observational, longitudinal study on naturalistic treatment of bipolar disorder in everyday clinical practice

    NARCIS (Netherlands)

    Renes, Joannes W.; Regeer, Eline J.; van der Voort, Trijntje Y. G.; Nolen, Willem A.; Kupka, Ralph W.

    2014-01-01

    Background: While various guidelines on the treatment of bipolar disorder have been published over the last decades, adherence to guidelines has been reported to be low. In this article we describe the protocol of a nationwide, multicenter, longitudinal, non-intervention study on the treatment of bi

  10. The potential benefits of naturalistic driving for road safety research : theoretical and empirical considerations and challenges for the future.

    OpenAIRE

    Schagen, I.N.L.G. van & Sagberg, F.

    2012-01-01

    Naturalistic driving (ND) is a research method that provides insight in everyday driver behaviour. Typically, in an ND study vehicles are equipped with several small cameras and sensors, which continuously and inconspicuously register vehicle manoeuvres, driver behaviour, and external conditions. This allows observation and analysis of the interrelationships between driver, vehicle, road, and other traffic in normal situations, conflict situations, and crashes. This paper introduces the conce...

  11. Earth scientists as time travelers and agents of colonial conquest: Swiss naturalists in the Dutch East Indies

    OpenAIRE

    Schär, Bernhard C.

    2015-01-01

    This case study on two Swiss naturalists illustrates some of the ways scientific exploration of planet earth was connected to imperial conquest in the Dutch East Indies at around 1900. Looking for answers for zoogeographical problems on the island of Celebes the Swiss benefited from and enabled Dutch colonial invasion of the island. The case illustrates that the Dutch empire was a site of scientific competition among a transnational community of scholars. Finally, the case illustrates how sci...

  12. Comparison of Speed of Sound Measures Assessed by Multisite Quantitative Ultrasound to Bone Mineral Density Measures Assessed by Dual-Energy X-Ray Absorptiometry in a Large Canadian Cohort: the Canadian Multicentre Osteoporosis Study (CaMos).

    Science.gov (United States)

    Olszynski, Wojciech P; Adachi, Jonathon D; Hanley, David A; Davison, Kenneth S; Brown, Jacques P

    2016-01-01

    Dual-energy X-ray absorptiometry (DXA) is an important tool for the estimate of fracture risk through the measurement of bone mineral density (BMD). Similarly, multisite quantitate ultrasound can prospectively predict future fracture through the measurement of speed of sound (SOS). This investigation compared BMD (at the femoral neck, total hip, and lumbar spine) and SOS measures (at the distal radius, tibia, and phalanx sites) in a large sample of randomly-selected and community-based individuals from the Canadian Multicentre Osteoporosis Study. Furthermore, mass, height, and age were also compared with both measures. There were 4123 patients included with an age range of 30-96.8 yr. Pearson product moment correlations between BMD and SOS measures were low (0.21-0.29; all pfracture risk. In locales with liberal access to DXA, the addition of SOS to BMD and other clinical risk factors may improve the identification of those patients at high risk for future fracture. PMID:26050876

  13. Canadian media representations of mad cow disease.

    Science.gov (United States)

    Boyd, Amanda D; Jardine, Cynthia G; Driedger, S Michelle

    2009-01-01

    A Canadian case of bovine spongiform encephalopathy (BSE) or "mad cow disease" was confirmed in May, 2003. An in-depth content analysis of newspaper articles was conducted to understand the portrayal of BSE and variant Creutzfeldt-Jakob disease (vCJD) in the Canadian media. Articles in the "first 10 days" following the initial discovery of a cow with BSE in Canada on May 20, 2003, were examined based on the premise that these initial stories provide the major frames that dominate news media reporting of the same issue over time and multiple occurrences. Subsequent confirmed Canadian cases were similarly analyzed to determine if coverage changed in these later media articles. The results include a prominence of economic articles, de-emphasis of health aspects, and anchoring the Canadian outbreak to that of Britain's crisis. The variation in media representations between those in Canada and those documented in Britain are explored in this study. PMID:19697246

  14. Metals exposure and risk of small-for-gestational age birth in a Canadian birth cohort: The MIREC study

    Energy Technology Data Exchange (ETDEWEB)

    Thomas, Shari [Department of Public Health Sciences, Queen’s University, Kingston, Ontario (Canada); Arbuckle, Tye E., E-mail: Tye.Arbuckle@hc-sc.gc.ca [Population Studies Division, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa (Canada); Fisher, Mandy [Population Studies Division, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa (Canada); Fraser, William D. [Sainte Justine University Hospital Research Center, University of Montreal, Montreal (Canada); Ettinger, Adrienne [Center for Perinatal, Pediatric & Environmental Epidemiology, Yale School of Public Health, New Haven, CT (United States); King, Will [Department of Public Health Sciences, Queen’s University, Kingston, Ontario (Canada)

    2015-07-15

    Background: Lead, mercury, cadmium and arsenic are some of the most common toxic metals to which Canadians are exposed. The effect of exposure to current low levels of toxic metals on fetal growth restriction is unknown. Objective: The aim of this study was to examine relationships between exposure to lead, mercury, cadmium and arsenic during pregnancy, and risk of small for gestational age (SGA) birth. Methods: Lead, mercury, cadmium and arsenic levels were measured in blood samples from the first and third trimesters in 1835 pregnant women from across Canada. Arsenic species in first trimester urine were also assessed. Relative risks and 95% confidence intervals were estimated using log binomial multivariate regression. Important covariates including maternal age, parity, pre-pregnancy BMI, and smoking, were considered in the analysis. An exploratory analysis was performed to examine potential effect modification of these relationships by single nucleotide polymorphisms (SNPs) in GSTP1 and GSTO1 genes. Results: No association was found between blood lead, cadmium or arsenic and risk for SGA. We observed an increased risk for SGA for the highest compared to the lowest tertile of exposure for mercury (>1.6 µg/L, RR=1.56.; 95% CI=1.04–2.58) and arsenobetaine (>2.25 µg/L, RR=1.65; 95% CI=1.10–2.47) after adjustment for the effects of parity and smoking. A statistically significant interaction was observed in the relationship between dimethylarsinic acid (DMA) levels in urinary arsenic and SGA between strata of GSTO1 A104A (p for interaction=0.02). A marginally significant interaction was observed in the relationship between blood lead and SGA between strata of GSTP1 A114V (p for interaction=0.06). Conclusions: These results suggest a small increase in risk for SGA in infants born to women exposed to mercury and arsenic. Given the conflicting evidence in the literature this warrants further investigation in other pregnant populations. - Highlights: • Metals

  15. Metals exposure and risk of small-for-gestational age birth in a Canadian birth cohort: The MIREC study

    International Nuclear Information System (INIS)

    Background: Lead, mercury, cadmium and arsenic are some of the most common toxic metals to which Canadians are exposed. The effect of exposure to current low levels of toxic metals on fetal growth restriction is unknown. Objective: The aim of this study was to examine relationships between exposure to lead, mercury, cadmium and arsenic during pregnancy, and risk of small for gestational age (SGA) birth. Methods: Lead, mercury, cadmium and arsenic levels were measured in blood samples from the first and third trimesters in 1835 pregnant women from across Canada. Arsenic species in first trimester urine were also assessed. Relative risks and 95% confidence intervals were estimated using log binomial multivariate regression. Important covariates including maternal age, parity, pre-pregnancy BMI, and smoking, were considered in the analysis. An exploratory analysis was performed to examine potential effect modification of these relationships by single nucleotide polymorphisms (SNPs) in GSTP1 and GSTO1 genes. Results: No association was found between blood lead, cadmium or arsenic and risk for SGA. We observed an increased risk for SGA for the highest compared to the lowest tertile of exposure for mercury (>1.6 µg/L, RR=1.56.; 95% CI=1.04–2.58) and arsenobetaine (>2.25 µg/L, RR=1.65; 95% CI=1.10–2.47) after adjustment for the effects of parity and smoking. A statistically significant interaction was observed in the relationship between dimethylarsinic acid (DMA) levels in urinary arsenic and SGA between strata of GSTO1 A104A (p for interaction=0.02). A marginally significant interaction was observed in the relationship between blood lead and SGA between strata of GSTP1 A114V (p for interaction=0.06). Conclusions: These results suggest a small increase in risk for SGA in infants born to women exposed to mercury and arsenic. Given the conflicting evidence in the literature this warrants further investigation in other pregnant populations. - Highlights: • Metals

  16. Quality of life themes in Canadian adults and street youth who are homeless or hard-to-house: A multi-site focus group study

    OpenAIRE

    Palepu Anita; Hubley Anita M; Russell Lara B; Gadermann Anne M; Chinni Mary

    2012-01-01

    Abstract Background The aim of this study was to identify what is most important to the quality of life (QoL) of those who experience homelessness by directly soliciting the views of homeless and hard-to-house Canadians themselves. These individuals live within a unique social context that differs considerably from that of the general population. To understand the life areas that are most important to them, it is critical to have direct input from target populations of homeless and hard-to-ho...

  17. Quality of life themes in Canadian adults and street youth who are homeless or hard-to-house: A multi-site focus group study

    OpenAIRE

    Palepu, Anita; Hubley, Anita M; Russell, Lara B; Gadermann, Anne M; Chinni, Mary

    2012-01-01

    Background The aim of this study was to identify what is most important to the quality of life (QoL) of those who experience homelessness by directly soliciting the views of homeless and hard-to-house Canadians themselves. These individuals live within a unique social context that differs considerably from that of the general population. To understand the life areas that are most important to them, it is critical to have direct input from target populations of homeless and hard-to-house perso...

  18. The New Indices of Religious Orientation Revised (NIROR: A Study among Canadian Adolescents Attending a Baptist Youth Mission and Service Event

    Directory of Open Access Journals (Sweden)

    Leslie J. Francis

    2016-05-01

    Full Text Available This study explores the properties of the New Indices of Religious Orientation Revised (NIROR among a sample of 521 Canadian adolescents attending a Baptist youth mission and service event, ranging in age from 12 to 19 years. This revision simplified the language of the original instrument to increase its accessibility among young people. The data support the internal consistency reliability and construct validity of the three revised nine-item scales designed to operationalise extrinsic religious orientation, intrinsic religious orientation, and quest religious orientation.

  19. Solar ultraviolet-B radiation and vitamin D: a cross-sectional population-based study using data from the 2007 to 2009 Canadian Health Measures Survey

    OpenAIRE

    Greenfield Jamie A; Park Philip S; Farahani Ellie; Malik Suneil; Vieth Reinhold; McFarlane Norman A; Shepherd Theodore G; Knight Julia A

    2012-01-01

    Abstract Background Exposure to solar ultraviolet-B (UV-B) radiation is a major source of vitamin D3. Chemistry climate models project decreases in ground-level solar erythemal UV over the current century. It is unclear what impact this will have on vitamin D status at the population level. The purpose of this study was to measure the association between ground-level solar UV-B and serum concentrations of 25-hydroxyvitamin D (25(OH)D) using a secondary analysis of the 2007 to 2009 Canadian He...

  20. Differences in Anticipatory Behaviour between Rats (Rattus norvegicus) Housed in Standard versus Semi-Naturalistic Laboratory Environments.

    Science.gov (United States)

    Makowska, I Joanna; Weary, Daniel M

    2016-01-01

    Laboratory rats are usually kept in relatively small cages, but research has shown that they prefer larger and more complex environments. The physiological, neurological and health effects of standard laboratory housing are well established, but fewer studies have addressed the sustained emotional impact of a standard cage environment. One method of assessing affective states in animals is to look at the animals' anticipatory behaviour between the presentation of a cue signalling the arrival of a reward and the arrival of that reward. The primary aim of this study was to use anticipatory behaviour to assess the affective state experienced by female rats a) reared and housed long-term in a standard laboratory cage versus a semi-naturalistic environment, and b) before and after treatment with an antidepressant or an anxiolytic. A secondary aim was to add to the literature on anticipatory behaviour by describing and comparing the frequency and duration of individual elements of anticipatory behaviour displayed by rats reared in these two systems. In all experiments, total behavioural frequency was higher in standard-housed rats compared to rats from the semi-naturalistic condition, suggesting that standard-housed rats were more sensitive to rewards and experiencing poorer welfare than rats reared in the semi-naturalistic environment. What rats did in anticipation of the reward also differed between housing treatments, with standard-housed rats mostly rearing and rats from the semi-naturalistic condition mostly sitting facing the direction of the upcoming treat. Drug interventions had no effect on the quantity or form of anticipatory behaviour, suggesting that the poorer welfare experienced by standard-housed rats was not analogous to depression or anxiety, or alternatively that the drug interventions were ineffective. This study adds to mounting evidence that standard laboratory housing for rats compromises rat welfare, and provides further scientific support for

  1. Differences in Anticipatory Behaviour between Rats (Rattus norvegicus Housed in Standard versus Semi-Naturalistic Laboratory Environments.

    Directory of Open Access Journals (Sweden)

    I Joanna Makowska

    Full Text Available Laboratory rats are usually kept in relatively small cages, but research has shown that they prefer larger and more complex environments. The physiological, neurological and health effects of standard laboratory housing are well established, but fewer studies have addressed the sustained emotional impact of a standard cage environment. One method of assessing affective states in animals is to look at the animals' anticipatory behaviour between the presentation of a cue signalling the arrival of a reward and the arrival of that reward. The primary aim of this study was to use anticipatory behaviour to assess the affective state experienced by female rats a reared and housed long-term in a standard laboratory cage versus a semi-naturalistic environment, and b before and after treatment with an antidepressant or an anxiolytic. A secondary aim was to add to the literature on anticipatory behaviour by describing and comparing the frequency and duration of individual elements of anticipatory behaviour displayed by rats reared in these two systems. In all experiments, total behavioural frequency was higher in standard-housed rats compared to rats from the semi-naturalistic condition, suggesting that standard-housed rats were more sensitive to rewards and experiencing poorer welfare than rats reared in the semi-naturalistic environment. What rats did in anticipation of the reward also differed between housing treatments, with standard-housed rats mostly rearing and rats from the semi-naturalistic condition mostly sitting facing the direction of the upcoming treat. Drug interventions had no effect on the quantity or form of anticipatory behaviour, suggesting that the poorer welfare experienced by standard-housed rats was not analogous to depression or anxiety, or alternatively that the drug interventions were ineffective. This study adds to mounting evidence that standard laboratory housing for rats compromises rat welfare, and provides further

  2. Taste coding of complex naturalistic taste stimuli and traditional taste stimuli in the parabrachial pons of the awake, freely licking rat.

    Science.gov (United States)

    Sammons, Joshua D; Weiss, Michael S; Victor, Jonathan D; Di Lorenzo, Patricia M

    2016-07-01

    Several studies have shown that taste-responsive cells in the brainstem taste nuclei of rodents respond to sensory qualities other than gustation. Such data suggest that cells in the classical gustatory brainstem may be better tuned to respond to stimuli that engage multiple sensory modalities than to stimuli that are purely gustatory. Here, we test this idea by recording the electrophysiological responses to complex, naturalistic stimuli in single neurons in the parabrachial pons (PbN, the second neural relay in the central gustatory pathway) in awake, freely licking rats. Following electrode implantation and recovery, we presented both prototypical and naturalistic taste stimuli and recorded the responses in the PbN. Prototypical taste stimuli (NaCl, sucrose, citric acid, and caffeine) and naturalistic stimuli (clam juice, grape juice, lemon juice, and coffee) were matched for taste quality and intensity (concentration). Umami (monosodium glutamate + inosine monophosphate) and fat (diluted heavy cream) were also tested. PbN neurons responded to naturalistic stimuli as much or more than to prototypical taste stimuli. Furthermore, they convey more information about naturalistic stimuli than about prototypical ones. Moreover, multidimensional scaling analyses showed that across unit responses to naturalistic stimuli were more widely separated than responses to prototypical taste stimuli. Interestingly, cream evoked a robust and widespread response in PbN cells. Collectively, these data suggest that natural foods are more potent stimulators of PbN cells than purely gustatory stimuli. Probing PbN cells with pure taste stimuli may underestimate the response repertoire of these cells. PMID:27121585

  3. Bilingualism: A Canadian Challenge

    OpenAIRE

    Shapiro, Bernard J.

    2010-01-01

    Bilingualism in French and English is a much-to-be hoped for common and shared characteristic of Canadian citizenship—even though to date the effect of forty years of the Official Languages Act has been most marked in government services and among various Canadian elites. Although it is important that Canada hold onto a goal of the widest possible bilingualism,more modest objectives are outlined for the years immediately ahead.

  4. Areas activated during naturalistic reading comprehension overlap topological visual, auditory, and somatotomotor maps.

    Science.gov (United States)

    Sood, Mariam R; Sereno, Martin I

    2016-08-01

    Cortical mapping techniques using fMRI have been instrumental in identifying the boundaries of topological (neighbor-preserving) maps in early sensory areas. The presence of topological maps beyond early sensory areas raises the possibility that they might play a significant role in other cognitive systems, and that topological mapping might help to delineate areas involved in higher cognitive processes. In this study, we combine surface-based visual, auditory, and somatomotor mapping methods with a naturalistic reading comprehension task in the same group of subjects to provide a qualitative and quantitative assessment of the cortical overlap between sensory-motor maps in all major sensory modalities, and reading processing regions. Our results suggest that cortical activation during naturalistic reading comprehension overlaps more extensively with topological sensory-motor maps than has been heretofore appreciated. Reading activation in regions adjacent to occipital lobe and inferior parietal lobe almost completely overlaps visual maps, whereas a significant portion of frontal activation for reading in dorsolateral and ventral prefrontal cortex overlaps both visual and auditory maps. Even classical language regions in superior temporal cortex are partially overlapped by topological visual and auditory maps. By contrast, the main overlap with somatomotor maps is restricted to a small region on the anterior bank of the central sulcus near the border between the face and hand representations of M-I. Hum Brain Mapp 37:2784-2810, 2016. © 2016 The Authors Human Brain Mapping Published by Wiley Periodicals, Inc. PMID:27061771

  5. Affective State Level Recognition in Naturalistic Facial and Vocal Expressions.

    Science.gov (United States)

    Meng, Hongying; Bianchi-Berthouze, Nadia

    2014-03-01

    Naturalistic affective expressions change at a rate much slower than the typical rate at which video or audio is recorded. This increases the probability that consecutive recorded instants of expressions represent the same affective content. In this paper, we exploit such a relationship to improve the recognition performance of continuous naturalistic affective expressions. Using datasets of naturalistic affective expressions (AVEC 2011 audio and video dataset, PAINFUL video dataset) continuously labeled over time and over different dimensions, we analyze the transitions between levels of those dimensions (e.g., transitions in pain intensity level). We use an information theory approach to show that the transitions occur very slowly and hence suggest modeling them as first-order Markov models. The dimension levels are considered to be the hidden states in the Hidden Markov Model (HMM) framework. Their discrete transition and emission matrices are trained by using the labels provided with the training set. The recognition problem is converted into a best path-finding problem to obtain the best hidden states sequence in HMMs. This is a key difference from previous use of HMMs as classifiers. Modeling of the transitions between dimension levels is integrated in a multistage approach, where the first level performs a mapping between the affective expression features and a soft decision value (e.g., an affective dimension level), and further classification stages are modeled as HMMs that refine that mapping by taking into account the temporal relationships between the output decision labels. The experimental results for each of the unimodal datasets show overall performance to be significantly above that of a standard classification system that does not take into account temporal relationships. In particular, the results on the AVEC 2011 audio dataset outperform all other systems presented at the international competition. PMID:23757552

  6. Superpave implementation across Canada; 1994-2001: Part One: Results from the 2001 Canadian Superpave Implementation Study (C-SITS)

    Energy Technology Data Exchange (ETDEWEB)

    Goodman, S. [Canadian Strategic Highway Research Program, Ottawa, ON (Canada)

    2002-01-01

    The Superpave system, the major product of the Canadian Strategic Highway Research Project (C-SHRP) has been the subject of much attention through its technology transfer mandate which includes the purchase of test equipment, construction and monitoring of test sections, distribution of technical briefs and conduct of cross country information sessions. The latest implantation survey (C-SIT) was conducted in the fall of 2001, as the second major Canadian survey of Superpave implementation since 1998. Of the 200 survey instruments sent out 41 responses were received in 2001 representing all provinces, the federal government and 30 municipalities. Twenty-three agencies indicated no previous experience with Superpave. A total of 4.13 million tons of Superpave asphalt mix has been laid between 1994 and 2001, while the total asphalt produced with PG binder and the Marshal method amounted to slightly more than 28.3 million tonnes. As of mid-2001 only the Provinces of Ontario and Quebec have completely implemented the PG binder specifications. The Atlantic provinces will likely implement the specification by the end of 2002 or shortly thereafter. None of the western provinces have implemented the PG binder specification, but the availability of high quality asphalt cement made the specifications redundant to those agencies. Increased roller pickup was one of the most frequently experienced concerns in terms of construction issues, however, much of these have been remedied with continued experience placing Superpave mixes. The principal result revealed by the survey was that no responding agencies in Canada have adopted both the PG binder specification and the Superpave mix design system. Various technical concerns are cited as the reason for the delay. The overall impression, however, is that with continued monitoring and experience Superpave will see progressive adaptation by all Canadian road agencies. 9 refs., 8 tabs., 2 figs. A copy of the survey instrument is

  7. The methodological lesson of complementarity: Bohr’s naturalistic epistemology

    International Nuclear Information System (INIS)

    Bohr’s intellectual journey began with the recognition that empirical phenomena implied the breakdown of classical mechanics in the atomic domain; this, in turn, led to his adoption of the ‘quantum postulate’ that justifies the ‘stationary states’ of his atomic model of 1913. His endeavor to develop a wider conceptual framework harmonizing both classical and quantum descriptions led to his proposal of the new methodological goals and standards of complementarity. Bohr’s claim that an empirical discovery can demand methodological revision justifies regarding his epistemological lesson as supporting a naturalistic epistemology. (paper)

  8. The methodological lesson of complementarity: Bohr’s naturalistic epistemology

    Science.gov (United States)

    Folse, H. J.

    2014-12-01

    Bohr’s intellectual journey began with the recognition that empirical phenomena implied the breakdown of classical mechanics in the atomic domain; this, in turn, led to his adoption of the ‘quantum postulate’ that justifies the ‘stationary states’ of his atomic model of 1913. His endeavor to develop a wider conceptual framework harmonizing both classical and quantum descriptions led to his proposal of the new methodological goals and standards of complementarity. Bohr’s claim that an empirical discovery can demand methodological revision justifies regarding his epistemological lesson as supporting a naturalistic epistemology.

  9. Neural coding of naturalistic motion stimuli

    CERN Document Server

    Lewen, G D; De van Steveninck, R R

    2001-01-01

    We study a wide field motion sensitive neuron in the visual system of the blowfly {\\em Calliphora vicina}. By rotating the fly on a stepper motor outside in a wooded area, and along an angular motion trajectory representative of natural flight, we stimulate the fly's visual system with input that approaches the natural situation. The neural response is analyzed in the framework of information theory, using methods that are free from assumptions. We demonstrate that information about the motion trajectory increases as the light level increases over a natural range. This indicates that the fly's brain utilizes the increase in photon flux to extract more information from the photoreceptor array, suggesting that imprecision in neural signals is dominated by photon shot noise in the physical input, rather than by noise generated within the nervous system itself.

  10. Individual and area socioeconomic inequalities in cause-specific unintentional injury mortality: 11-year follow-up study of 2.7 million Canadians.

    Science.gov (United States)

    Burrows, Stephanie; Auger, Nathalie; Gamache, Philippe; Hamel, Denis

    2012-03-01

    This study investigated the association between individual and area socioeconomic status (SES) and leading causes of unintentional injury mortality in Canadian adults. Using the 1991-2001 Canadian Census Mortality Follow-up Study cohort (N=2,735,152), Cox proportional hazard regression was used to calculate hazard ratios and 95% confidence intervals for all-cause unintentional injury, motor vehicle collision (MVC), fall, poisoning, suffocation, fire/burn, and drowning deaths. Results indicated that associations with SES differed by cause of injury, and were generally more pronounced for males. Low education was associated with an elevated risk of mortality from all-cause unintentional injury and MVC (males only) and poisoning and drowning (both sexes). Low income was strongly associated with most causes of injury mortality, particularly fire/burn and poisoning. Having no occupation or low occupational status was associated with higher risks of all-cause injury, fall, poisoning and suffocation (both sexes) and MVC deaths among men. Associations with area deprivation were weak, and only areas with high deprivation had elevated risk of all-cause injury, MVC (males only), poisoning and drowning (both sexes). This study reveals the importance of examining SES differentials by cause of death from a multilevel perspective. Future research is needed to clarify the mechanisms underlying these differences to implement equity-oriented approaches for reducing differential exposures, vulnerability or consequences of injury mortality. PMID:22269490

  11. A case study of old-ice import and export through Peary and Sverdrup Channels in the Canadian Arctic Archipelago: 1998-2005

    Science.gov (United States)

    Alt, Bea; Wilson, Katherine; Carrières, Tom

    This case study attempts to quantify the amount and timing of the import, export and through-flow of old ice in the Peary Channel-Sverdrup Channel area of the northern Canadian Arctic Archipelago during the period 1998-2005. The study combines quantitative weekly area-averaged ice coverage evaluations from the Canadian Ice Service (CIS) Digital Archive with detailed analysis of RADARSAT imagery and ice-motion results from the CIS ice-motion algorithm. The results show that in 1998 more than 70% of the old ice in Peary-Sverdrup was lost, half by melt and export to the south and the other half by export north into the Arctic Ocean, and that no Arctic Ocean old ice was imported into Peary-Sverdrup. A net import of 10% old ice was seen in 1999, with some indication of through-flow into southern channels. In 2000, no net import of old ice occurred in Peary-Sverdrup, but there was significant through-flow, with evidence of old ice reaching the Northwest Passage by November. Full recovery of the old-ice regime was complete by the end of 2001. More than two-thirds of the recovery was due to the in situ formation of second-year ice. Conditions in the following 3 years were near normal.

  12. Monte Carlo simulation study to calculate radiation dose under beam-loss scenarios in Top-up operation mode for HXMA beamline at Canadian Light Source

    International Nuclear Information System (INIS)

    This study was conducted to analyze the radiological impact in the experimental area of the Hard X-Ray beamline at Canadian Light Source under beam loss scenario during Top-up injection. The radiation doses were calculated using Monte Carlo code: FLUKA. The physical size, location, and material of the beamline components were adopted from the technical drawings and were incorporated in the FLUKA model. Three (03) beam loss scenarios were simulated: (i) Beam was miss-steered in the storage ring (ii) Beam hit misaligned components inside the ring and (iii) Beam was lost inside the primary optical enclosure (POE). Total ambient dose was calculated at several observation points for each scenario considering the injected beam as the primary source. The results and impacts were discussed. - Highlights: • Monte Carlo method was used to calculate radiation dose for a beamline at Canadian Light Source. • Three possible beam loss scenarios were studied. • The predicted worst dose was found below the regulatory dose limit

  13. Costs and Quality of Life in Diabetic Macular Edema: Canadian Burden of Diabetic Macular Edema Observational Study (C-REALITY

    Directory of Open Access Journals (Sweden)

    John R. Gonder

    2014-01-01

    Full Text Available Purpose. To characterize the economic and quality of life burden of diabetic macular edema (DME in Canadian patients. Patients and Methods. 145 patients with DME were followed for 6 months with monthly telephone interviews and medical chart reviews at months 0, 3, and 6. Visual acuity in the worst-seeing eye was assessed at months 0 and 6. DME-related healthcare costs were determined over 6 months, and vision-related (National Eye Institute Visual Functioning Questionnaire and generic (EQ-5D quality of life was assessed at months 0, 3, and 6. Results. Mean age of patients was 63.7 years: 52% were male and 72% had bilateral DME. At baseline, visual acuity was categorized as normal/mild loss for 63.4% of patients, moderate loss for 10.4%, and severe loss/nearly blind for 26.2%. Mean 6-month DME-related costs/patient were as follows: all patients (n=135, $2,092; normal/mild loss (n=88, $1,776; moderate loss (n=13, $1,845; and severe loss/nearly blind (n=34, $3,007. Composite scores for vision-related quality of life declined with increasing visual acuity loss; generic quality of life scores were highest for moderate loss and lowest for severe loss/nearly blind. Conclusions. DME-related costs in the Canadian healthcare system are substantial. Costs increased and vision-related quality of life declined with increasing visual acuity severity.

  14. Cultural differences in self- and other-evaluations and well-being: a study of European and Asian Canadians.

    Science.gov (United States)

    Kim, Hyunji; Schimmack, Ulrich; Oishi, Shigehiro

    2012-04-01

    Anusic, Schimmack, Pinkus, and Lockwood (2009) developed the halo-alpha-beta (HAB) model to separate halo variance from variance due to valid personality traits and other sources of measurement error in self-ratings of personality. The authors used a twin-HAB model of self-ratings and ratings of a partner (friend or dating partner) to test several hypotheses about culture, evaluative biases in self- and other-perceptions, and well-being. Participants were friends or dating partners who reported on their own and their partner's personality and well-being (N = 906 students). European Canadians had higher general evaluative biases (GEB) than Asian Canadians. There were no cultural differences in self-enhancement or other-enhancement. GEB significantly predicted self-ratings of life satisfaction, but not informant ratings of well-being. GEB fully mediated the effect of culture on self-ratings of life satisfaction. The results suggest that North American culture encourages positive biases in self- and other-perceptions. These biases also influence self-ratings of life satisfaction but have a much weaker effect on informant ratings of life satisfaction. The implications of these findings for cultural differences in well-being are discussed. PMID:22288531

  15. Mercury in Canadian crude oil

    International Nuclear Information System (INIS)

    Estimates for average mercury concentrations in crude oil range widely from 10 ng/g of oil to 3,500 ng/g of oil. With such a broad range of estimates, it is difficult to determine the contributions of the petroleum sector to the total budget of mercury emissions. In response to concerns that the combustion of petroleum products may be a major source of air-borne mercury pollution, Environment Canada and the Canadian Petroleum Products Institute has undertaken a survey of the average total mercury concentration in crude oil processed in Canadian refineries. In order to calculate the potential upper limit of total mercury in all refined products, samples of more than 30 different types of crude oil collected from refineries were measured for their concentration of mercury as it enters into a refinery before processing. High temperature combustion, cold vapour atomic absorption and cold vapour atomic fluorescence were the techniques used to quantify mercury in the samples. The results of the study provide information on the total mass of mercury present in crude oil processed in Canada each year. Results can be used to determine the impact of vehicle exhaust emissions to the overall Canadian mercury emission budget. 17 refs., 2 tabs., 2 figs

  16. Road Safety Data, Collection, Transfer and Analysis DaCoTa. Workpackage 6, Driver Behaviour Monitoring through Naturalistic Driving: Deliverable 6.5: Naturalistic Driving for cross-national monitoring of SPIs and Exposure : an overview.

    OpenAIRE

    Wegman, R.W.N. & Bos, N.M.

    2015-01-01

    WP6 of DaCoTA, Driver Behaviour Monitoring through Naturalistic Driving, focuses on the usefulness and feasibility of applying the Naturalistic Driving method for monitoring within the framework of ERSO. The aim is to continuously collect comparable information about the road safety level in EU Member States and its development over time. Naturalistic Driving methods are intended to gather data that represent the behaviour of the population of drivers in its basic state. Naturalistic Driving ...

  17. Some Naturalistic Comments on Frege's Philosophy of Mathematics

    Institute of Scientific and Technical Information of China (English)

    YE Feng

    2012-01-01

    This paper compares Frege's philosophy of mathematics with a naturalistic and nominalistic philosophy of mathematics developed in Ye (2010a, 2010b, 2010c, 2011), and it defends the latter against the former. The paper focuses on Frege's account of the applicability of mathematics in the sciences and his conceptual realism. It argues that the naturalistic and nominalistic approach fares better than the Fregean approach in terms of its logical accuracy and clarity in explaining the applicability of mathematics in the sciences, its ability to reveal the real issues in explaining human epistemic and semantic access to objects, its prospect for resolving internal difficulties and developing into a full-fledged theory with rich details, as well its consistency with other areas of our scientific knowledge. Trivial criticisms such as "Frege is against naturalism here and therefore he is wrong" will be avoided as the paper tries to evaluate the two approaches on a neutral ground by focusing on meta-theoretical features such as accuracy, richness of detail, prospects for resolving internal issues, and consistency with other knowledge. The arguments in this paper apply not merely to Frege's philosophy. They apply as well to all philosophies that accept a Fregean account of the applicability of mathematics or accept conceptual realism. Some of these philosophies profess to endorse naturalism.

  18. Naturalistic Enactment to Elicit and Recognize Caregiver State Anxiety.

    Science.gov (United States)

    Miranda, Darien; Favela, Jesus; Ibarra, Catalina; Cruz, Netzahualcoyotl

    2016-09-01

    Caring for people with dementia imposes significant stress on family members and caregivers. Often, these informal caregivers have no coping strategy to deal with these behaviors. Anxiety and stress episodes are often triggered by problematic behaviors exhibited by the person who suffers from dementia. Detecting these behaviors could help them in dealing with them and reduce caregiver burden. However, work on anxiety detection using physiological signals has mostly been done under controlled conditions. In this paper we describe an experiment aimed at inducing anxiety among caregivers of people with dementia under naturalistic conditions. We report an experiment, using the naturalistic enactment technique, in which 10 subjects were asked to care for an older adult who acts as if she experiences dementia. We record physiological signals from the participants (GSR, HR, EEG) during the sessions that lasted for approximately 30 min. We explain how we obtained ground truth from self-report and observation data. We conducted two different tests using the Support Vector Machine technique. We obtained an average precision of 77.8 % and 38.1 % recall when classifying two different possible states: "Anxious" and "Not anxious". Analysis of the data provides evidence that the experiment elicits state anxiety and that it can be detected using wearable sensors. Furthermore, if episodes of problematic behaviors can also be detected, the recognition of anxiety in the caregiver can be improved, leading to the enactment of appropriate interventions to help caregivers cope with anxiety episodes. PMID:27443338

  19. Estimation of lung tissue doses following exposure to low-LET radiation in the Canadian study of cancer following multiple fluoroscopies

    International Nuclear Information System (INIS)

    Lung tissue doses from exposure to external low-LET radiation have been estimated for each year between 1930 and 1960 for 92,707 tuberculosis patients first treated in Canadian institutions between 1930 and 1952. Many of these patients received multiple chest fluoroscopies together with treatment by artificial pneumothorax, and thus accumulated doses up to 15.7 grays. The estimated doses have been used in a statistical analysis of lung cancer mortality between 1950 and 1987 occurring among 64,698 patients known to be alive at the start of 1950, and followed by linkage to the Canadian national mortality data base. There were substantial variations in the total cumulative lung tissue dose received by the cohort, with 2,490 individuals having doses in excess of 1.7 grays. A total of 1,156 lung cancer deaths was observed in the cohort, and these have been used to estimate relative risks. The most appropriate risk model appears to be a simple linear relative risk function, with an excess relative risk coefficient of 0.089 for an absorbed dose of 1 gray. This contrasts with estimates of relative risk based on the atomic bomb survivors study, for which the excess relative risk coefficient for males 20 years after the first exposure is estimated to be 0.64. The difference is statistically significant. It is postulated that fractionation and dose rate effectiveness factors may account for some of the discrepancy. (Modified author abstract) (14 refs., 20 tabs.)

  20. Radioactive waste disposal - ethical and environmental considerations - A Canadian perspective

    International Nuclear Information System (INIS)

    This work deals with ethical and environmental considerations of radioactive waste disposal in Canada. It begins with the canadian attitudes toward nature and environment. Then are given the canadian institutions which reflect an environmental ethic, the development of a canadian radioactive waste management policy, the establishment of formal assessment and review process for a nuclear fuel waste disposal facility, some studies of the ethical and risk dimensions of nuclear waste decisions, the canadian societal response to issues of radioactive wastes, the analysis of risks associated with fuel waste disposal, the influence of other energy related environmental assessments and some common ground and possible accommodation between the different views. (O.L.). 50 refs

  1. Canadian competitive advantage

    International Nuclear Information System (INIS)

    The evolution of the Canadian petrochemical industry was outlined, emphasizing the proximity to feedstocks as the principal advantage enjoyed by the industry over its international competitors. Annual sales statistics for 1995 were provided. Key players in the Canadian petrochemical industry (Nova, Dow, DuPont, Methanex, Esso, Union Carbide, Shell and Celanese), their share of the market and key products were noted. Manufacturing facilities are located primarily in Alberta, southern Ontario and Quebec. The feedstock supply infrastructure, historical and alternative ethane pricing in Canada and the US, the North American market for petrochemicals, the competitiveness of the industry, tax competitiveness among Canadian provinces and the US, the Canada - US unit labour cost ratio, ethylene facility construction costs in Canada relative to the US Gulf Coast, and projected 1997 financial requirements were reviewed. 19 figs

  2. Canadian Educational Development Centre Websites: More Ebb than Flow?

    Science.gov (United States)

    Simmons, Nicola

    2010-01-01

    This paper examines information portrayed on Canadian educational development (ED) centre websites and, in particular, whether information that corresponds to questions compiled from a literature search of ED centre practices is readily available from centre websites. This study phase is part of a larger national study of Canadian educational…

  3. Nine-Lump Kinetic Study of Catalytic Pyrolysis of Gas Oils Derived from Canadian Synthetic Crude Oil

    Directory of Open Access Journals (Sweden)

    Rui Zhang

    2016-01-01

    Full Text Available Catalytic pyrolysis of gas oils derived from Canadian synthetic crude oil on a kind of zeolite catalyst was conducted in a confined fluidized bed reactor for the production of light olefins. The overall reactants and products were classified into nine species, and a nine-lump kinetic model was proposed to describe the reactions based on appropriate assumptions. This kinetic model had 24 rate constants and a catalyst deactivation constant. The kinetic constants at 620°C, 640°C, 660°C, and 680°C were estimated by means of nonlinear least-square regression method. Preexponential factors and apparent activation energies were then calculated according to the Arrhenius equation. The apparent activation energies of the three feed lumps were lower than those of the intermediate product lumps. The nine-lump kinetic model showed good calculation precision and the calculated yields were close to the experimental ones.

  4. Transferability of geodata from European to Canadian (Ontario) sedimentary rocks to study gas transport from nuclear wastes repositories

    International Nuclear Information System (INIS)

    Document available in extended abstract form only. A deep geological repository (DGR) for low and intermediate level waste in southern Ontario is currently proposed, at a depth of approximately 680 m in an argillaceous limestone formation (Cobourg Limestone) overlain by 200 m of low permeability shale (Ordovician Shale). Significant quantities of gas could be generated in the aforementioned DGR from several processes (e.g., degradation of waste forms, corrosion of waste containers). The accumulation and release of such gases from the repository system may affect a number of processes that influence its long-term safety. Consequently, safety assessments of the proposed DGR need to be supported by a solid understanding of the main mechanisms associated with gas generation and migration and the capability to mathematically model those mechanisms. The development of those mathematical models would usually require the consideration of complex coupled thermo-hydro-mechanical- chemical (THMC) processes. A research program is being conducted in the Department of Civil Engineering of the University of Ottawa in collaboration with the Canadian Nuclear Safety Commission (CNSC) to model the coupled THMC processes associated with gas migration and their impacts on the safety of DGR in southern Ontario. The development and validation of such model as well as the assessment of the impact of gas migration need the acquisition of sufficient amount of (good quality) data on the geomechanical, geochemical, hydraulic, thermal properties of the sedimentary rocks in Southern Ontario as well as relevant gas transport parameters, such as gas entry pressure, Klinkenberg effect, intrinsic permeability, capillary pressure-water saturation relationship. During the past fifteen years, several laboratory and field investigations have been conducted in several countries to acquire geo-data to study and model the THMC processes associated with gas migration in DGR in sedimentary rocks. However

  5. Canadian Irradiation Centre

    International Nuclear Information System (INIS)

    The Canadian Irradiation Centre is a non-profit cooperative project between Atomic Energy of Canada Limited, Radiochemical Company and Universite du Quebec, Institut Armand-Frappier, Centre for Applied Research in Food Science. The Centre's objectives are to develop, demonstrate and promote Canada's radiation processing technology and its applications by conducting applied research; training technical, professional and scientific personnel; educating industry and government; demonstrating operational and scientific procedures; developing processing procedures and standards, and performing product and market acceptance trials. This pamphlet outlines the history of radoation technology and the services offered by the Canadian Irradiation Centre

  6. Proceedings of the 2009 Annual Meeting of the Canadian Mathematics Education Study Group = Actes de la Rencontre Annuelle 2009 du Groupe Canadien d'Etude en Didactique des Mathematiques (33rd, Toronto, Ontario, Canada, June 5-June 9, 2009)

    Science.gov (United States)

    Liljedahl, Peter, Ed.; Oesterle, Susan, Ed.; Abu-Bakare, Veda, Ed.

    2010-01-01

    This submission contains the Proceedings of the 2009 Annual Meeting of the Canadian Mathematics Education Study Group (CMESG), held at York University in Toronto, Ontario. The CMESG is a group of mathematicians and mathematics educators who meet annually to discuss mathematics education issues at all levels of learning. The aims of the Study Group…

  7. Mortality study of Canadian military personnel exposed to radiation: atomic test blasts and Chalk River nuclear reactor clean-ups, 1950's

    International Nuclear Information System (INIS)

    This report describes a historical cohort study of the group of Canadian military personnel exposed to radiation in the 1950s at atomic bomb test blasts in the U.S. and Australia, and at clean-up operations at the Chalk River Nuclear Laboratories. Overall and cause-specific mortality in the exposed group was compared to that of the control cohort of unexposed military personnel, matched on age, service, rank and trade. Analyses indicated no elevation in the exposed cohort, in overall or cause-specific mortality due to diseases associated with radiation. Since this study was restricted to an investigation of mortality, we must stress that we cannot generalize these results or conclusions to current morbidity experienced by the exposed cohort

  8. Independent naturalists make matchless contributions to science and resource management (Invited)

    Science.gov (United States)

    Crimmins, T. M.; Crimmins, M.; Bertelsen, C. D.

    2013-12-01

    Much of the recent growth in PPSR, or public participation in scientific research, has been in 'contributory' or 'collaborative'-type PPSR projects, where non-scientists' roles primarily are data collection or some participation in other aspects of project design or execution. A less common PPSR model, referred to as 'collegial' in recent literature, is characterized by dedicated naturalists collecting rich and extensive data sets outside of an organized program and then working with professional scientists to analyze these data and disseminate findings. The three collaborators on this presentation represent an example of the collegial model; our team is comprised of an independent naturalist who has collected over 150,000 records of plant flowering phenology spanning three decades, a professional climatologist, and a professional plant ecologist. Together, we have documented fundamental plant-climate relationships and seasonal patterns in flowering in the Sonoran Desert region, as well as changes in flowering community composition and distribution associated with changing climate conditions in the form of seven peer-reviewed journal articles and several conference presentations and proceedings. These novel findings address critical gaps in our understanding of plant ecology in the Sky Islands region, and have been incorporated into the Southwest Climate Change and other regional planning documents. It is safe to say that the data resource amassed by a single very dedicated individual, which is far beyond what could be accomplished by probably nearly all researchers or resource managers, has been instrumental in documenting fundamental ecological relationships in the Sky Islands region as well as how these systems are changing in this period of rapidly changing climate. The research findings that have resulted from this partnership have the potential to also directly affect management decisions. The watershed under study, managed by the US Forest Service, has been

  9. Do the Rights Thing?: The Canadian Museum for Human Rights and the MA in Cultural Studies at the University of Winnipeg

    Science.gov (United States)

    Ready, Kathryn; Keshavjee, Serena

    2015-01-01

    Education is the self-declared "heart" of the Canadian Museum for Human Rights (CMHR), already generating partnership projects and programs with such organizations as the Canadian Teachers' Federation, the Assembly of First Nations, the Inuit Tapiriit Kanatami, and the Robert F. Kennedy Center for Justice and Human Rights. The CMHR has…

  10. A naturalistic decision making model for simulated human combatants

    International Nuclear Information System (INIS)

    The authors describe a naturalistic behavioral model for the simulation of small unit combat. This model, Klein's recognition-primed decision making (RPD) model, is driven by situational awareness rather than a rational process of selecting from a set of action options. They argue that simulated combatants modeled with RPD will have more flexible and realistic responses to a broad range of small-scale combat scenarios. Furthermore, they note that the predictability of a simulation using an RPD framework can be easily controlled to provide multiple evaluations of a given combat scenario. Finally, they discuss computational issues for building an RPD-based behavior engine for fully automated combatants in small conflict scenarios, which are being investigated within Sandia's Next Generation Site Security project

  11. RADBRUCH’S JUS-NATURALISTIC OVERCOMING OF LEGAL POSITIVISM

    Directory of Open Access Journals (Sweden)

    Radivoj Stepanov

    2012-12-01

    Full Text Available Germany legal thought gave in the twentieth century several names of world renown: Emil Lask, Hans Kelsen, Max Weber, Karl Schmidt, Niklas Luman, Arthur Kaufman, Ernst Eduard Hirsch and others. All they have left a significant mark in theory, sociology and philosophy of law. And they all had very distinctive, and - for historians of law - interesting, personal biographies and destinies. Among such distinguished legal minds there is also Gustav Radbruch (G. Radbruch, Luebeck 1878 - Heidelberg 1949, who, after severe ruptures in his private and social life after Nazis came to power, made ​​a complete turnaround in his philosophy of law with his famous legal-philosophical writing: "Five Minutes of Philosophy of Law" (1945. Radbruch meticulously questioned the rigid positivist principle that even "the most vicious and inhuman law should apply until it is in effective" and pleaded instead for jus-naturalistic principle of justice in a "supra-statutory law."

  12. [Pieter Bleeker (1819-1878) physician and passionate naturalist].

    Science.gov (United States)

    van Heiningen, Teunis Willem

    2010-01-01

    Pieter Bleeker (1819-1878), born in a modest family, made his career as a naturalist and military physician in the Dutch East Indies (1842-1860). He maintained a lively correspondence with Auguste Duméril (Paris). Many scientific museums were eagerly looking forward to receiving parts of his splendid collections of tropical fishes. His "Atlas Ichthyologique des Indes Orientales Néerlandaises" was published between 1862 and 1877. His efforts, in the field of ichthyology and tropical medicine, rendered him two doctorates honoris causa (Leyden University--1846; Utrecht University--1849). In 1855 he was elected member of the Royal Netherlands Academy of Arts and Sciences. In 1856 he was elected correspondent of the Museum National d'Histoire Naturelle (Paris). In January 1864 he received the knighthood of the "Légion d'honneur" of the French empire. PMID:21560380

  13. On Stephen Crane’s Naturalistic Conception and Symbolic Techniques

    Institute of Scientific and Technical Information of China (English)

    WANG Xiao-jun

    2014-01-01

    Stephen Crane spent a very productive life in his short span of life. His challenge against convention helps him to ac-cept new ideas that were popular in his time, like naturalism, symbolism and impressionism. In particular, Crane gave the perfect union of naturalistic conception and symbolic techniques in his novels, which are valued by critics as American literary classic works with highly artistic value, and his scant legacy was a rich one to the America literature. This paper tells us that, no matter how literary scholarships interpret and misinterpret Stephen Crane’s literary works, the significance of Crane’s achievement in the development of American literature has not been and will not be ignored.

  14. Canadian heavy water production

    International Nuclear Information System (INIS)

    The paper reviews Canadian experience in the production of heavy water, presents a long-term supply projection, relates this projection to the anticipated long-term electrical energy demand, and highlights principal areas for further improvement that form the bulk of our research and development program on heavy water processes

  15. Canadian hydrogen safety program

    International Nuclear Information System (INIS)

    The Canadian hydrogen safety program (CHSP) is a project initiative of the Codes and Standards Working Group of the Canadian transportation fuel cell alliance (CTFCA) that represents industry, academia, government, and regulators. The Program rationale, structure and contents contribute to acceptance of the products, services and systems of the Canadian Hydrogen Industry into the Canadian hydrogen stakeholder community. It facilitates trade through fair insurance policies and rates, effective and efficient regulatory approval procedures and accommodation of the interests of the general public. The Program integrates a consistent quantitative risk assessment methodology with experimental (destructive and non-destructive) failure rates and consequence-of-release data for key hydrogen components and systems into risk assessment of commercial application scenarios. Its current and past six projects include Intelligent Virtual Hydrogen Filling Station (IVHFS), Hydrogen clearance distances, comparative quantitative risk comparison of hydrogen and compressed natural gas (CNG) refuelling options; computational fluid dynamics (CFD) modeling validation, calibration and enhancement; enhancement of frequency and probability analysis, and Consequence analysis of key component failures of hydrogen systems; and fuel cell oxidant outlet hydrogen sensor project. The Program projects are tightly linked with the content of the International Energy Agency (IEA) Task 19 Hydrogen Safety. (author)

  16. Twitter and Canadian Educators

    Science.gov (United States)

    Cooke, Max

    2012-01-01

    An emerging group of leaders in Canadian education has attracted thousands of followers. They've made Twitter an extension of their lives, delivering twenty or more tweets a day that can include, for example, links to media articles, research, new ideas from education bloggers, or to their own, or simply a personal thought. At their best,…

  17. Reform in Canadian Universities.

    Science.gov (United States)

    Small, J. M.

    1994-01-01

    A survey of 67 Canadian university vice presidents and 66 deans concerning reform in recent years found that the many changes reported were modest and reactive rather than bold and proactive. Most common changes involved strategic planning, retrenchment, curriculum expansion, response to enrollment changes, administrative restructuring, and more…

  18. Canadian Red Cross.

    Science.gov (United States)

    Lavender, Colleen

    2008-01-01

    The Canadian Red Cross is guided by its Fundamental Principles--humanity, impartiality, neutrality, independence, voluntary service, unity, and universality--and organized in a traditional geographic hierarchical structure. Among the characteristics that have contributed to its success are a budgeting process that starts at the local level, measurement of program outcomes, and coordinated fundraising activities at the regional level. PMID:18551842

  19. Canadian petroleum industry review

    International Nuclear Information System (INIS)

    A wide ranging discussion about the factors that have influenced oil and natural gas prices, the differences of the Canadian market from international markets, the differences between eastern and western Canadian markets, and shareholders' perspectives on recent commodity price developments was presented. Developments in the OPEC countries were reviewed, noting that current OPEC production of 25 mmbbls is about 60 per cent higher than it was in 1985. It is expected that OPEC countries will continue to expand capacity to meet expected demand growth and the continuing need created by the UN embargo on Iraqi oil sales. Demand for natural gas is also likely to continue to rise especially in view of the deregulation of the electricity industry where natural gas may well become the favored fuel for incremental thermal generation capacity. Prices of both crude oil and natural gas are expected to hold owing to unusually low storage levels of both fuels. The inadequacy of infrastructure, particularly pipeline capacity as a key factor in the Canadian market was noted, along with the dynamic that will emerge in the next several years that may have potential consequences for Canadian production - namely the reversal of the Sarnia to Montreal pipeline. With regard to shareholders' expectations the main issues are (1) whether international markets reach back to the wellhead, hence the producer's positioning with respect to transportation capacity and contract portfolios, and (2) whether the proceeds from increased prices are invested in projects that are yielding more than the cost of capital. 28 figs

  20. “Aesthetic Primitives”: Fundamental Biological Elements of a Naturalistic Aesthetics

    Directory of Open Access Journals (Sweden)

    Ellen Dissanayake

    2015-05-01

    Full Text Available Aesthetics, like other philosophical subjects, has historically made use of «top down» (mentalistic, analytic, and linguistic methods. Recent discoveries in genetics, evolutionary psychology, paleoarchaeology, and neuroscience call for a new «naturalistic» or «bottom up» perspective. Combining these fields with behavioral biology and ethnoarts studies, I offer seven premises that underlie a new understanding of evolved predispositions of the brain/mind that all artists use to attract attention, sustain interest, and create, mold, and shape emotion. I describe aesthetic «primitives» in somatic and behavioral (as well as psychosensory modalities, suggesting that these were present in early sapiens and continue to influence human art making and aesthetic response today. Keywords: Aesthetic Mind; Neuroaesthetics, evolutionary aesthetics, cognitive aesthetics, evolution of art.

  1. Operationalizing NIMH Research Domain Criteria (RDoC) in naturalistic clinical settings.

    Science.gov (United States)

    Sharp, Carla; Fowler, J Christopher; Salas, Ramiro; Nielsen, David; Allen, Jon; Oldham, John; Kosten, Thomas; Mathew, Sanjay; Madan, Alok; Frueh, B Christopher; Fonagy, Peter

    2016-01-01

    Recently, the National Institute of Mental Health (NIMH) introduced the Research Domain Criteria (RDoC) initiative to address two major challenges facing the field of psychiatry: (1) the lack of new effective personalized treatments for psychiatric disorders, and (2) the limitations associated with categorically defined psychiatric disorders. Although the potential of RDoC to revolutionize personalized psychiatric medicine and psychiatric nosology has been acknowledged, it is unclear how to implement RDoC in naturalistic clinical settings as part of routine outcomes research. In this article, the authors present the major RDoC principles and then show how these principles are operationalized in The Menninger Clinic's McNair Initiative for Neuroscience Discovery-Menninger & Baylor College of Medicine (MIND-MB) study. The authors discuss how RDoC-informed outcomes-based assessment in clinical settings can transform personalized clinical care through multimodal treatments. PMID:27583809

  2. Lazzaro Spallanzani and fossils: from a naturalist's travel observations to the teaching of natural history.

    Science.gov (United States)

    Prestes, Maria Elice Brzezinski; Faria, Frederico Felipe de Almeida

    2011-12-01

    This article analyzes opinions expressed by Italian naturalist Lazzaro Spallanzani on the origin and constitution of fossils on three of his travels, which punctuated three courses in mineralogy he gave in the natural history discipline at the University of Pavia. These trips to Portovenere, the island of Cerigo and the Two Sicilies enabled him to address important topics, such as the discovery of fossilized shells inside volcanic rocks, the discovery of human fossils, and the existence of fossils of species that had 'been lost', incorporating knowledge being developed at the time that drew on mineral chemistry. His concern with fossils is demonstrative of how Spallanzani, in true eighteenth century fashion, integrated studies from the three kingdoms of nature. PMID:22281956

  3. Quantifying naturalistic social gaze in fragile X syndrome using a novel eye tracking paradigm.

    Science.gov (United States)

    Hall, Scott S; Frank, Michael C; Pusiol, Guido T; Farzin, Faraz; Lightbody, Amy A; Reiss, Allan L

    2015-10-01

    A hallmark behavioral feature of fragile X syndrome (FXS) is the propensity for individuals with the syndrome to exhibit significant impairments in social gaze during interactions with others. However, previous studies employing eye tracking methodology to investigate this phenomenon have been limited to presenting static photographs or videos of social interactions rather than employing a real-life social partner. To improve upon previous studies, we used a customized eye tracking configuration to quantify the social gaze of 51 individuals with FXS and 19 controls, aged 14-28 years, while they engaged in a naturalistic face-to-face social interaction with a female experimenter. Importantly, our control group was matched to the FXS group on age, developmental functioning, and degree of autistic symptomatology. Results showed that participants with FXS spent significantly less time looking at the face and had shorter episodes (and longer inter-episodes) of social gaze than controls. Regression analyses indicated that communication ability predicted higher levels of social gaze in individuals with FXS, but not in controls. Conversely, degree of autistic symptoms predicted lower levels of social gaze in controls, but not in individuals with FXS. Taken together, these data indicate that naturalistic social gaze in FXS can be measured objectively using existing eye tracking technology during face-to-face social interactions. Given that impairments in social gaze were specific to FXS, this paradigm could be employed as an objective and ecologically valid outcome measure in ongoing Phase II/Phase III clinical trials of FXS-specific interventions. PMID:26079280

  4. Quality of life themes in Canadian adults and street youth who are homeless or hard-to-house: A multi-site focus group study

    Directory of Open Access Journals (Sweden)

    Palepu Anita

    2012-08-01

    Full Text Available Abstract Background The aim of this study was to identify what is most important to the quality of life (QoL of those who experience homelessness by directly soliciting the views of homeless and hard-to-house Canadians themselves. These individuals live within a unique social context that differs considerably from that of the general population. To understand the life areas that are most important to them, it is critical to have direct input from target populations of homeless and hard-to-house persons. Methods Focus groups were conducted with 140 individuals aged 15 to 73 years who were homeless or hard-to-house to explore the circumstances in which they were living and to capture what they find to be important and relevant domains of QoL. Participants were recruited in Toronto, Ottawa, Montreal, and Vancouver. Content analysis was used to analyze the data. Results Six major content themes emerged: Health/health care; Living conditions; Financial situation; Employment situation; Relationships; and Recreational and leisure activities. These themes were linked to broader concepts that included having choices, stability, respect, and the same rights as other members of society. Conclusions These findings not only aid our understanding of QoL in this group, but may be used to develop measures that capture QoL in this population and help programs and policies become more effective in improving the life situation for persons who are homeless and hard-to-house. Quality of life themes in Canadian adults and street youth who are homeless or hard-to-house: A multi-site focus group study.

  5. A Study of the Vaginal Microbiome in Healthy Canadian Women Utilizing cpn60-Based Molecular Profiling Reveals Distinct Gardnerella Subgroup Community State Types.

    Science.gov (United States)

    Albert, Arianne Y K; Chaban, Bonnie; Wagner, Emily C; Schellenberg, John J; Links, Matthew G; van Schalkwyk, Julie; Reid, Gregor; Hemmingsen, Sean M; Hill, Janet E; Money, Deborah

    2015-01-01

    The vaginal microbiota is important in women's reproductive and overall health. However, the relationships between the structure, function and dynamics of this complex microbial community and health outcomes remain elusive. The objective of this study was to determine the phylogenetic range and abundance of prokaryotes in the vaginal microbiota of healthy, non-pregnant, ethnically diverse, reproductive-aged Canadian women. Socio-demographic, behavioural and clinical data were collected and vaginal swabs were analyzed from 310 women. Detailed profiles of their vaginal microbiomes were generated by pyrosequencing of the chaperonin-60 universal target. Six community state types (CST) were delineated by hierarchical clustering, including three Lactobacillus-dominated CST (L. crispatus, L. iners, L. jensenii), two Gardnerella-dominated (subgroups A and C) and an "intermediate" CST which included a small number of women with microbiomes dominated by seven other species or with no dominant species but minority populations of Streptococcus, Staphylococcus, Peptoniphilus, E. coli and various Proteobacteria in co-dominant communities. The striking correspondence between Nugent score and deep sequencing CST continues to reinforce the basic premise provided by the simpler Gram stain method, while additional analyses reveal detailed cpn60-based phylogeny and estimated abundance in microbial communities from vaginal samples. Ethnicity was the only demographic or clinical characteristic predicting CST, with differences in Asian and White women (p = 0.05). In conclusion, this study confirms previous work describing four cpn60-based subgroups of Gardnerella, revealing previously undescribed CST. The data describe the range of bacterial communities seen in Canadian women presenting with no specific vaginal health concerns, and provides an important baseline for future investigations of clinically important cohorts. PMID:26266808

  6. A Study of the Vaginal Microbiome in Healthy Canadian Women Utilizing cpn60-Based Molecular Profiling Reveals Distinct Gardnerella Subgroup Community State Types.

    Directory of Open Access Journals (Sweden)

    Arianne Y K Albert

    Full Text Available The vaginal microbiota is important in women's reproductive and overall health. However, the relationships between the structure, function and dynamics of this complex microbial community and health outcomes remain elusive. The objective of this study was to determine the phylogenetic range and abundance of prokaryotes in the vaginal microbiota of healthy, non-pregnant, ethnically diverse, reproductive-aged Canadian women. Socio-demographic, behavioural and clinical data were collected and vaginal swabs were analyzed from 310 women. Detailed profiles of their vaginal microbiomes were generated by pyrosequencing of the chaperonin-60 universal target. Six community state types (CST were delineated by hierarchical clustering, including three Lactobacillus-dominated CST (L. crispatus, L. iners, L. jensenii, two Gardnerella-dominated (subgroups A and C and an "intermediate" CST which included a small number of women with microbiomes dominated by seven other species or with no dominant species but minority populations of Streptococcus, Staphylococcus, Peptoniphilus, E. coli and various Proteobacteria in co-dominant communities. The striking correspondence between Nugent score and deep sequencing CST continues to reinforce the basic premise provided by the simpler Gram stain method, while additional analyses reveal detailed cpn60-based phylogeny and estimated abundance in microbial communities from vaginal samples. Ethnicity was the only demographic or clinical characteristic predicting CST, with differences in Asian and White women (p = 0.05. In conclusion, this study confirms previous work describing four cpn60-based subgroups of Gardnerella, revealing previously undescribed CST. The data describe the range of bacterial communities seen in Canadian women presenting with no specific vaginal health concerns, and provides an important baseline for future investigations of clinically important cohorts.

  7. Exploring Alternate Specifications to Explain Agency-Level Effects in Placement Decisions regarding Aboriginal Children: Further Analysis of the Canadian Incidence Study of Reported Child Abuse and Neglect Part B

    Science.gov (United States)

    Chabot, Martin; Fallon, Barbara; Tonmyr, Lil; MacLaurin, Bruce; Fluke, John; Blackstock, Cindy

    2013-01-01

    Objective: This paper builds upon the analyses presented in two companion papers (Fluke et al., 2010 and Fallon et al., 2013) using data from the 1998 and 2003 cycles of the "Canadian Incidence Study of Reported Child Abuse and Neglect (CIS-1998 and CIS-2003)" to examine the influence of clinical and organizational characteristics on the decision…

  8. Placement Decisions and Disparities among Aboriginal Children: Further Analysis of the Canadian Incidence Study of Reported Child Abuse and Neglect Part A: Comparisons of the 1998 and 2003 Surveys

    Science.gov (United States)

    Fallon, Barbara; Chabot, Martin; Fluke, John; Blackstock, Cindy; MacLaurin, Bruce; Tonmyr, Lil

    2013-01-01

    Objective: Fluke et al. (2010) analyzed Canadian Incidence Study on Reported Child Abuse and Neglect (CIS) data collected in 1998 to explore the influence of clinical and organizational characteristics on the decision to place Aboriginal children in an out-of-home placement at the conclusion of a child maltreatment investigation. This study…

  9. Proceedings of the 2008 Annual Meeting of the Canadian Mathematics Education Study Group = Actes de la Rencontre Annuelle 2008 du Groupe Canadien d'Etude en Didactique des Mathematiques (32nd, Sherbrooke, Quebec, Canada, May 23-27, 2008)

    Science.gov (United States)

    Liljedahl, Peter, Ed.; Oesterle, Susan, Ed.; Berneche, Christian, Ed.

    2009-01-01

    This submission contains the Proceedings of the 2008 Annual Meeting of the Canadian Mathematics Education Study Group (CMESG), held at the Universite de Sherbrooke in Sherbrooke, Quebec. The CMESG is a group of mathematicians and mathematics educators who meet annually to discuss mathematics education issues at all levels of learning. The aims of…

  10. Proceedings of the 2006 Annual Meeting of the Canadian Mathematics Education Study Group = Actes de la Rencontre Annuelle 2006 du Groupe Canadien d'Etude en Didactique des Mathematiques (30th, Calgary, Alberta, Canada, Jun 3-7, 2006)

    Science.gov (United States)

    Liljedahl, Peter, Ed.

    2007-01-01

    This submission contains the Proceedings of the 2006 Annual Meeting of the Canadian Mathematics Education Study Group (CMESG), held at the University of Calgary in Calgary, Alberta. The CMESG is a group of mathematicians and mathematics educators who meet annually to discuss mathematics education issues at all levels of learning. The aims of the…

  11. Proceedings of the 2007 Annual Meeting of the Canadian Mathematics Education Study Group = Actes de la Rencontre Annuelle 2007 du Groupe Canadien d'Etude en Didactique des Mathematiques (31st, Fredricton, New Brunswick, Canada, Jun 8-12, 2007)

    Science.gov (United States)

    Liljedahl, Peter, Ed.

    2008-01-01

    This submission contains the Proceedings of the 2007 Annual Meeting of the Canadian Mathematics Education Study Group (CMESG), held at the University of New Brunswick in Fredricton, New Brunswick. The CMESG is a group of mathematicians and mathematics educators who meet annually to discuss mathematics education issues at all levels of learning.…

  12. Proceedings of the 2010 Annual Meeting of the Canadian Mathematics Education Study Group = Actes de la Rencontre Annuelle 2010 du Groupe Canadien d'Etude en Didactique des Mathematiques (34th, Burnaby, British Columbia, Canada, May 21-25, 2010)

    Science.gov (United States)

    Liljedahl, Peter, Ed.; Oesterle, Susan, Ed.; Allan, Darien, Ed.

    2011-01-01

    This submission contains the Proceedings of the 2010 Annual Meeting of the Canadian Mathematics Education Study Group (CMESG), held at Simon Fraser University in Burnaby, British Columbia. The CMESG is a group of mathematicians and mathematics educators who meet annually to discuss mathematics education issues at all levels of learning. The aims…

  13. Canadian fusion program

    International Nuclear Information System (INIS)

    The National Research Council of Canada is establishing a coordinated national program of fusion research and development that is planned to grow to a total annual operating level of about $20 million in 1985. The long-term objective of the program is to put Canadian industry in a position to manufacture sub-systems and components of fusion power reactors. In the near term the program is designed to establish a minimum base of scientific and technical expertise sufficient to make recognized contributions and thereby gain access to the international effort. The Canadian program must be narrowly focussed on a few specializations where Canada has special indigenous skills or technologies. The programs being funded are the Tokamak de Varennes, the Fusion Fuels Technology Project centered on tritium management, and high-power gas laser technology and associated diagnostic instrumentation

  14. Canadian acid rain policy

    International Nuclear Information System (INIS)

    On March 13 of 1991, the Prime Minister of Canada, Brian Mulroney and the President of the United States of America, George Bush, signed an Agreement on Air Quality. This agreement enshrines Principle 21 of the 1972 Stockholm Declaration which states that countries are to ensure that activities within their jurisdiction do not cause damage to the environment of another country. This agreement also includes provisions for controlling acid rain. The Agreement on Air Quality followed years of discussion between the two countries and is a significant milestone in the history of Canadian acid rain policy. This paper begins by describing Canadian acid rain policy and its evolution. The paper also outlines the Canada-United States Air Quality Agreement and the effect of the acid rain provisions on deposition in Canada. Finally, it considers the future work that must be undertaken to further resolve the acid rain problem. 8 refs., 5 figs., 1 tab

  15. Canadian Mathematical Congress

    CERN Document Server

    1977-01-01

    For two weeks in August, 1975 more than 140 mathematicians and other scientists gathered at the Universite de Sherbrooke. The occasion was the 15th Biennial Seminar of the Canadian Mathematical Congress, entitled Mathematics and the Life Sciences. Participants in this inter­ disciplinary gathering included researchers and graduate students in mathematics, seven different areas of biological science, physics, chemistry and medical science. Geographically, those present came from the United States and the United Kingdom as well as from academic departments and government agencies scattered across Canada. In choosing this particular interdisciplinary topic the programme committee had two chief objectives. These were to promote Canadian research in mathematical problems of the life sciences, and to encourage co-operation and exchanges between mathematical scientists" biologists and medical re­ searchers. To accomplish these objective the committee assembled a stim­ ulating programme of lectures and talks. Six ...

  16. Financing Canadian international operations

    International Nuclear Information System (INIS)

    A primer on financing international operations by Canadian corporations was provided. Factors affecting the availability to project finance (location, political risk), the various forms of financing (debt, equity, and combinations), the main sources of government backed financing to corporations (the International Finance Corporation) (IFC), the European Bank for Reconstruction and Development (EBRD), the Asian Development Bank (ADB), the Overseas Property Insurance Corporation (OPIC), government or agency guarantees, political risk coverage, the use of offshore financial centres, and the where, when and how these various organizations operate, were reviewed. Examples of all of the above, taken from the experiences of Canadian Occidental Petroleum of Calgary in the U.S., in South America, in the Middle and Far East, and in Kazakhstan, were used as illustrations. figs

  17. Neighborhood disorder and screen time among 10-16 year old Canadian youth: A cross-sectional study

    Directory of Open Access Journals (Sweden)

    Carson Valerie

    2012-05-01

    Full Text Available Abstract Background Screen time activities (e.g., television, computers, video games have been linked to several negative health outcomes among young people. In order to develop evidence-based interventions to reduce screen time, the factors that influence the behavior need to be better understood. High neighborhood disorder, which may encourage young people to stay indoors where screen time activities are readily available, is one potential factor to consider. Methods Results are based on 15,917 youth in grades 6-10 (aged 10-16 years old who participated in the Canadian 2009/10 Health Behaviour in School-aged Children Survey (HBSC. Total hours per week of television, video games, and computer use were reported by the participating students in the HBSC student questionnaire. Ten items of neighborhood disorder including safety, neighbors taking advantage, drugs/drinking in public, ethnic tensions, gangs, crime, conditions of buildings/grounds, abandoned buildings, litter, and graffiti were measured using the HBSC student questionnaire, the HBSC administrator questionnaire, and Geographic Information Systems. Based upon these 10 items, social and physical neighborhood disorder variables were derived using principal component analysis. Multivariate multilevel logistic regression analyses were used to examine the relationship between social and physical neighborhood disorder and individual screen time variables. Results High (top quartile social neighborhood disorder was associated with approximately 35-45% increased risk of high (top quartile television, computer, and video game use. Physical neighborhood disorder was not associated with screen time activities after adjusting for social neighborhood disorder. However, high social and physical neighborhood disorder combined was associated with approximately 40-60% increased likelihood of high television, computer, and video game use. Conclusion High neighborhood disorder is one environmental

  18. Canadian petroleum history bibliography

    Energy Technology Data Exchange (ETDEWEB)

    Cass, D.

    2003-09-27

    The Petroleum History Bibliography includes a list of more than 2,000 publications that record the history of the Canadian petroleum industry. The list includes books, theses, films, audio tapes, published articles, company histories, biographies, autobiographies, fiction, poetry, humour, and an author index. It was created over a period of several years to help with projects at the Petroleum History Society. It is an ongoing piece of work, and as such, invites comments and additions.

  19. Tuberculosis in Aboriginal Canadians

    Directory of Open Access Journals (Sweden)

    Vernon H Hoeppner

    2000-01-01

    Full Text Available Endemic tuberculosis (TB was almost certainly present in Canadian aboriginal people (aboriginal Canadians denotes status Indians, Inuit, nonstatus Indians and metis as reported by Statistics Canada before the Old World traders arrived. However, the social changes that resulted from contact with these traders created the conditions that converted endemic TB into epidemic TB. The incidence of TB varied inversely with the time interval from this cultural collision, which began on the east coast in the 16th century and ended in the Northern Territories in the 20th century. This relatively recent epidemic explains why the disease is more frequent in aboriginal children than in Canadian-born nonaboriginal people. Treatment plans must account for the socioeconomic conditions and cultural characteristics of the aboriginal people, especially healing models and language. Prevention includes bacillus Calmette-Guerin vaccination and chemoprophylaxis, and must account for community conditions, such as rates of suicide, which have exceeded the rate of TB. The control of TB requires a centralized program with specifically directed funding. It must include a program that works in partnership with aboriginal communities.

  20. “An Aristocracy of Talent”: The South Carolina Physician-Naturalists and their Times

    OpenAIRE

    Bryan, Charles S.; Whitehead, A. Weaver

    2014-01-01

    During the natural history movement of the 18th and early 19th centuries, Charleston as a center was rivaled in the United States only by Philadelphia, New York, and Boston. Prominent physician-naturalists included Alexander Garden (for whom the gardenia is named), John Edwards Holbrook (“father of American herpetology”), and Francis Peyre Porcher (whose Resources of Southern Fields and Forests helped Confederates compensate for drug shortages). The Charleston physician-naturalists belonged t...

  1. Will an Unsupervised Self-Testing Strategy Be Feasible to Operationalize in Canada? Results from a Pilot Study in Students of a Large Canadian University

    OpenAIRE

    Nitika Pant Pai; Madhavi Bhargava; Lawrence Joseph; Jigyasa Sharma; Sabrina Pillay; Bhairavi Balram; Pierre-Paul Tellier

    2014-01-01

    Background. A convenient, private, and accessible HIV self-testing strategy stands to complement facility-based conventional testing. Over-the-counter oral HIV self-tests are approved and available in the United States, but not yet in Canada. Canadian data on self-testing is nonexistent. We investigated the feasibility of offering an unsupervised self-testing strategy to Canadian students. Methods. Between September 2011 and May 2012, we recruited 145 students from a student health clinic of ...

  2. Naturalistic Observation in the Study of Parent-Child Interaction.

    Science.gov (United States)

    Baumrind, Diana

    This project investigated patterns of parental authority among Berkeley preschool children and the processes by which these parents contributed to the development of children's social responsibility and individuality. Subjects were 140 families from city-sponsored, private cooperative, and university-operated nursery schools. Eight constructs were…

  3. Computer Language Settings and Canadian Spellings

    Science.gov (United States)

    Shuttleworth, Roger

    2011-01-01

    The language settings used on personal computers interact with the spell-checker in Microsoft Word, which directly affects the flagging of spellings that are deemed incorrect. This study examined the language settings of personal computers owned by a group of Canadian university students. Of 21 computers examined, only eight had their Windows…

  4. Heroes and Canadian History. Current Concerns.

    Science.gov (United States)

    Clark, Penney

    1999-01-01

    Believes that social studies teachers should encourage young people to learn about Canadian heroes but simultaneously assist them in developing skepticism as opposed to only idealizing heroes. Explains that when students understand the qualities of heroes they will be able to cope when someone they hold as a hero falters. (CMK)

  5. The Ukrainian version of the pediatric Canadian acute respiratory illness and flu scale: a linguistic validation study

    Science.gov (United States)

    Gerasimov, Sergei V; Belova, Halyna A; Pavuk, Halyna L; Seniuk, Ihor M; Strekalina, Yulia I

    2014-01-01

    Background There is no internationally recognized outcome measure for the assessment of acute respiratory tract infections (ARTIs) in children. The only identifiable scale initially developed for pediatric application has been the Canadian acute respiratory illness and flu scale (CARIFS). The aim of our trial was to adapt the English version of the CARIFS to the Ukrainian language. Materials and methods We performed forward and backward translation of the original version of the CARIFS according to the recommended standard. Then, the final CARIFS-based Ukrainian questionnaires were given to 149 caregivers whose 3–12 years old children suffered from ARTI. The questionnaires were completed twice by a caregiver 3–6 hours apart and once by a physician just after the second completion by a caregiver. The database was analyzed to assess the consistency (the Cronbach’s α coefficient), sensitivity (the standardized response mean; the effect size), reliability (test–retest analysis), and validity (Pearson’s correlation) of the CARIFS in the Ukrainian language. Results The backward translation of the Ukrainian version of the CARIFS demonstrated its good correspondence to the English version. The Cronbach’s α coefficient was 0.805, and item to total correlation coefficients varied from 0.185 to 0.665. The standardized response mean was 1.73, and the effect size was 2.50 suggesting good sensitivity of the scale. In the test–retest reliability analysis of 99 questionnaires, the median CARIFS score for the first and the second measurement was 19.0 (interquartile range [IQR]: 14.5–25.0) and 19.0 (IQR: 15.0–25.0), respectively, with a median change of 0.0 (IQR: −1.0 to 0.0, P=0.996). The Pearson’s correlation coefficient between the CARIFS score completed by a responder and a physician was 0.832 (P=0.004). Conclusion The Ukrainian version of the CARIFS-based English questionnaire proved to be a consistent, sensitive, reliable, and valid instrument in the

  6. The Ukrainian version of the pediatric Canadian acute respiratory illness and flu scale: a linguistic validation study

    Directory of Open Access Journals (Sweden)

    Gerasimov SV

    2014-10-01

    Full Text Available Sergei V Gerasimov,1 Halyna A Belova,2 Halyna L Pavuk,2 Ihor M Seniuk,2 Yulia I Strekalina21Lviv National Medical University, Lviv City Children's Hospital, 2The Fifth Lviv Community Outpatient Clinic, Lviv, UkraineBackground: There is no internationally recognized outcome measure for the assessment of acute respiratory tract infections (ARTIs in children. The only identifiable scale initially developed for pediatric application has been the Canadian acute respiratory illness and flu scale (CARIFS. The aim of our trial was to adapt the English version of the CARIFS to the Ukrainian language.Materials and methods: We performed forward and backward translation of the original version of the CARIFS according to the recommended standard. Then, the final CARIFS-based Ukrainian questionnaires were given to 149 caregivers whose 3–12 years old children suffered from ARTI. The questionnaires were completed twice by a caregiver 3–6 hours apart and once by a physician just after the second completion by a caregiver. The database was analyzed to assess the consistency (the Cronbach's α coefficient, sensitivity (the standardized response mean; the effect size, reliability (test–retest analysis, and validity (Pearson's correlation of the CARIFS in the Ukrainian language.Results: The backward translation of the Ukrainian version of the CARIFS demonstrated its good correspondence to the English version. The Cronbach’s α coefficient was 0.805, and item to total correlation coefficients varied from 0.185 to 0.665. The standardized response mean was 1.73, and the effect size was 2.50 suggesting good sensitivity of the scale. In the test–retest reliability analysis of 99 questionnaires, the median CARIFS score for the first and the second measurement was 19.0 (interquartile range [IQR]: 14.5–25.0 and 19.0 (IQR: 15.0–25.0, respectively, with a median change of 0.0 (IQR: -1.0 to 0.0, P=0.996. The Pearson’s correlation coefficient between the

  7. Victorian naturalists in China: science and informal empire.

    Science.gov (United States)

    Fan, Fa-ti

    2003-03-01

    This paper discusses the research of British naturalists in China during the period between the Opium War and the collapse of the Qing dynasty (1839-1911). China was defeated in the Opium War and forced to open treaty ports for trade with the Westerners. The foreign powers, particularly Britain, imposed upon the Qing government treaties, concession leases, favourable trade conditions, legal privileges and so on to reduce its political autonomy. In the shadow of the informal empire, not only did the British have more freedom to travel in China, first at the treaty ports and later in the interior, but they successively established diplomatic , commercial and missionary institutions in dozens of Chinese cities. The most important of them - the British Consular Service, the Chinese Maritime Customs and the Protestant missionary organizations - provided the talent and infrastructure for natural historical research and became networks for scientific information. The research into China's natural history epitomized the characteristics of British research on China in general: it engaged in collecting and circulating an ever-increasing amount of information and aimed at producing 'factual' and 'useful' knowledge about China. The paper modified current literature on scientific imperialism, which has dealt primarily with the colonial context, by examining the role of nineteenth-century British imperial science in the context of informal empire. PMID:12755132

  8. Safety implications of infotainment system use in naturalistic driving.

    Science.gov (United States)

    Perez, Miguel A

    2012-01-01

    The use of a radio while driving has long been considered a "threshold" of distraction that is socially acceptable although it may be a factor in some crashes and near crashes. This "social acceptance" has prompted the use of radio tasks, specifically radio tuning, as "references" that should not be exceeded by other secondary and tertiary tasks that make their way into the vehicle. As new functions make their way into vehicle radios (or more advanced infotainment systems), however, it is possible that radio tasks may become distracting to a level that surpasses current driver expectations. This investigation examines the naturalistic usage of several advanced infotainment systems and examines whether usage is associated first with changes in near crash occurrence and second with changes in driving behavior. Little association was found with near crashes: 5 of 46 near crash events observed in the dataset exhibited infotainment system use. Drivers involved in infotainment system use during near crashes, however, did exhibit distinct glance behaviors, generally suggesting lower levels of awareness about their driving environment. Initial analyses of a larger dataset appear to confirm these findings. PMID:22317366

  9. Naturalistic speeding data: Drivers aged 75 years and older.

    Science.gov (United States)

    Chevalier, Anna; Chevalier, Aran John; Clarke, Elizabeth; Wall, John; Coxon, Kristy; Brown, Julie; Ivers, Rebecca; Keay, Lisa

    2016-09-01

    The data presented in this article are related to the research article entitled "A longitudinal investigation of the predictors of older drivers׳ speeding behavior" (Chevalier et al., 2016) [1], wherein these speed events were used to investigate older drivers speeding behavior and the influence of cognition, vision, functional decline, and self-reported citations and crashes on speeding behavior over a year of driving. Naturalistic speeding behavior data were collected for up to 52 weeks from volunteer drivers aged 75-94 years (median 80 years, 52% male) living in the suburban outskirts of Sydney. Driving data were collected using an in-vehicle monitoring device. Global Positioning System (GPS) data were recorded at each second and determined driving speed through triangulation of satellite collected location data. Driving speed data were linked with mapped speed zone data based on a service-provider database. To measure speeding behavior, speed events were defined as driving 1 km/h or more, with a 3% tolerance, above a single speed limit, averaged over 30 s. The data contains a row per 124,374 speed events. This article contains information about data processing and quality control. PMID:27294182

  10. Canadian House Dust Study: Population-based concentrations, loads and loading rates of arsenic, cadmium, chromium, copper, nickel, lead, and zinc inside urban homes

    Energy Technology Data Exchange (ETDEWEB)

    Rasmussen, Pat E. [Exposure and Biomonitoring Division, Healthy Environments and Consumer Safety Branch, Health Canada, 50 Colombine Driveway, Ottawa, ON, Canada K1A 0K9 (Canada); Department of Earth Sciences, University of Ottawa, 140 Louis Pasteur, Ottawa, ON, Canada K1N 6N5 (Canada); Levesque, Christine [Exposure and Biomonitoring Division, Healthy Environments and Consumer Safety Branch, Health Canada, 50 Colombine Driveway, Ottawa, ON, Canada K1A 0K9 (Canada); Chénier, Marc; Gardner, H. David [Exposure and Biomonitoring Division, Healthy Environments and Consumer Safety Branch, Health Canada, 50 Colombine Driveway, Ottawa, ON, Canada K1A 0K9 (Canada); Department of Earth Sciences, University of Ottawa, 140 Louis Pasteur, Ottawa, ON, Canada K1N 6N5 (Canada); Jones-Otazo, Heather [Regions and Programs Branch, Health Canada, 180 Queen Street West, Toronto, ON, Canada M5V 3L7 (Canada); Petrovic, Sanya [Contaminated Sites Division, Healthy Environments and Consumer Safety Branch, Health Canada, 269 Laurier Ave West, Ottawa, ON, Canada K1A 0K9 (Canada)

    2013-01-15

    The Canadian House Dust Study was designed to obtain nationally representative urban house dust metal concentrations (μg g{sup −1}) and metal loadings (μg m{sup −2}) for arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb), and zinc (Zn). Consistent sampling of active dust of known age and provenance (area sampled) also permitted the calculation of indoor loading rates (mg m{sup −2} day{sup −1} for dust and μg m{sup −2} day{sup −1} for metals) for the winter season (from 2007 to 2010) when houses are most tightly sealed. Geomean/median indoor dust loading rates in homes located more than 2 km away from industry of any kind (9.6/9.1 mg m{sup −2} day{sup −1}; n = 580) were significantly lower (p < .001) than geomean (median) dust loading rates in homes located within 2 km of industry (13.5/13.4 mg m{sup −2} day{sup −1}; n = 421). Proximity to industry was characterized by higher indoor metal loading rates (p < .003), but no difference in dust metal concentrations (.29 ≥ p ≤ .97). Comparisons of non-smokers' and smokers' homes in non-industrial zones showed higher metal loading rates (.005 ≥ p ≤ .038) in smokers' homes, but no difference in dust metal concentrations (.15 ≥ p ≤ .97). Relationships between house age and dust metal concentrations were significant for Pb, Cd and Zn (p < .001) but not for the other four metals (.14 ≥ p ≤ .87). All seven metals, however, displayed a significant increase in metal loading rates with house age (p < .001) due to the influence of higher dust loading rates in older homes (p < .001). Relationships between three measures of metals in house dust – concentration, load, and loading rate – in the context of house age, smoking behavior and urban setting consistently show that concentration data is a useful indicator of the presence of metal sources in the home, whereas dust mass is the overriding influence on metal loadings and loading rates

  11. Canadian identity: Implications for international social work by Canadians

    DEFF Research Database (Denmark)

    Hiranandani, Vanmala Sunder

    2011-01-01

    This paper is in response to recent calls to conceptualize and articulate Canadian perspectives and experiences in international social work, given that the Canadian standpoint has been lacking in international social work literature. This paper contends that it is imperative, first of all, to cr...

  12. Canadian photovoltaic industry directory

    International Nuclear Information System (INIS)

    This directory has been prepared to help potential photovoltaic (PV) customers identify Canadian-based companies who can meet their needs, and to help product manufacturers and distributors identify potential new clients and/or partners within the PV industry for new and improved technologies. To assist the reader, an information matrix is provided that identifies the product and service types offered by each firm and its primary clients served. A list of companies by province or territory is also included. The main section lists companies in alphabetical order. Information presented for each includes address, contact person, prime activity, geographic area served, languages in which services are offered, and a brief company profile

  13. The Canadian safeguards program

    International Nuclear Information System (INIS)

    In support of the Treaty on the Non-Proliferation of Nuclear Weapons Canada provides technical support to the International Atomic Energy Agency for the development of safeguards relevant to Canadian designed and built nuclear facilities. Some details of this program are discussed, including the philosophy and development of CANDU safeguards systems; the unique equipment developed for these systems; the provision of technical experts; training programs; liaison with other technical organizations; research and development; implementation of safeguards systems at various nuclear facilities; and the anticipated future direction of the safeguards program

  14. Antipsychotic monotherapy and polypharmacy in the naturalistic treatment of schizophrenia with atypical antipsychotics

    Directory of Open Access Journals (Sweden)

    Correll Christoph

    2005-05-01

    Full Text Available Abstract Background Antipsychotic monotherapy is recognized as the treatment of choice for patients with schizophrenia. Simultaneous treatment with multiple antipsychotics (polypharmacy is suggested by some expert consensus guidelines as the last resort after exhausting monotherapy alternatives. This study assessed the annual rate and duration of antipsychotic monotherapy and its inverse, antipsychotic polypharmacy, among schizophrenia patients initiated on commonly used atypical antipsychotic medications. Methods Data were drawn from a large prospective naturalistic study of patients treated for schizophrenia-spectrum disorders, conducted 7/1997–9/2003. Analyses focused on patients (N = 796 who were initiated during the study on olanzapine (N = 405, quetiapine (N = 115, or risperidone (N = 276. The percentage of patients with monotherapy on the index antipsychotic over the 1-year post initiation, and the cumulative number of days on monotherapy were calculated for all patients and for each of the 3 atypical antipsychotic treatment groups. Analyses employed repeated measures generalized linear models and non-parametric bootstrap re-sampling, controlling for patient characteristics. Results During the 1-year period, only a third (35.7% of the patients were treated predominately with monotherapy (>300 days. Most patients (57.7% had at least one prolonged period of antipsychotic polypharmacy (>60 consecutive days. Patients averaged 195.5 days on monotherapy, 155.7 days on polypharmacy, and 13.9 days without antipsychotic therapy. Olanzapine-initiated patients were significantly more likely to be on monotherapy with the initiating antipsychotic during the 1-year post initiation compared to risperidone (p = .043 or quetiapine (p = .002. The number of monotherapy days was significantly greater for olanzapine than quetiapine (p Conclusion Despite guidelines recommending the use of polypharmacy only as a last resort, the use of antipsychotic

  15. Forecasting Canadian nuclear power station construction costs

    International Nuclear Information System (INIS)

    Because of the huge volume of capital required to construct a modern electric power generating station, investment decisions have to be made with as complete an understanding of the consequences of the decision as possible. This understanding must be provided by the evaluation of future situations. A key consideration in an evaluation is the financial component. This paper attempts to use an econometric method to forecast the construction costs escalation of a standard Canadian nuclear generating station (NGS). A brief review of the history of Canadian nuclear electric power is provided. The major components of the construction costs of a Canadian NGS are studied and summarized. A database is built and indexes are prepared. Based on these indexes, an econometric forecasting model is constructed using an apparently new econometric methodology of forecasting modelling. Forecasts for a period of 40 years are generated and applications (such as alternative scenario forecasts and range forecasts) to uncertainty assessment and/or decision-making are demonstrated. The indexes, the model, and the forecasts and their applications, to the best of the author's knowledge, are the first for Canadian NGS constructions. (author)

  16. 2003 survey of Canadian radiation oncology residents

    International Nuclear Information System (INIS)

    Purpose: Radiation oncology's popularity as a career in Canada has surged in the past 5 years. Consequently, resident numbers in Canadian radiation oncology residencies are at all-time highs. This study aimed to survey Canadian radiation oncology residents about their opinions of their specialty and training experiences. Methods and Materials: Residents of Canadian radiation oncology residencies that enroll trainees through the Canadian Resident Matching Service were identified from a national database. Residents were mailed an anonymous survey. Results: Eight of 101 (7.9%) potential respondents were foreign funded. Fifty-two of 101 (51.5%) residents responded. A strong record of graduating its residents was the most important factor residents considered when choosing programs. Satisfaction with their program was expressed by 92.3% of respondents, and 94.3% expressed satisfaction with their specialty. Respondents planning to practice in Canada totaled 80.8%, and 76.9% plan to have academic careers. Respondents identified job availability and receiving adequate teaching from preceptors during residency as their most important concerns. Conclusions: Though most respondents are satisfied with their programs and specialty, job availability and adequate teaching are concerns. In the future, limited time and resources and the continued popularity of radiation oncology as a career will magnify the challenge of training competent radiation oncologists in Canada

  17. On Realities of Canadian Multiculturalism

    Institute of Scientific and Technical Information of China (English)

    李梦辰

    2013-01-01

    Canada is a multicultural country which was mainly established by immigrants. Just because of that, Canadian govern⁃ment has carried out the policy of multiculturalism since1970s. However, it has encountered many problems such as policy con⁃flicts, national identity, democracy-inquiry and racial discrimination, etc. Hence the Canadian multiculturalism has been in a di⁃lemma.

  18. Neighborhood crime and adolescent cannabis use in Canadian adolescents

    NARCIS (Netherlands)

    de Looze, Margreet; Janssen, I; Elgar, Frank J.; Craig, Wendy; Pickett, W.

    2015-01-01

    Although neighbourhood factors have been proposed as determinants of adolescent behaviour, few studies document their relative etiological importance. We investigated the relationship between neighbourhood crime and cannabis use in a nationally representative sample of Canadian adolescents. Data fro

  19. Introducing New Priority Setting and Resource Allocation Processes in a Canadian Healthcare Organization: A Case Study Analysis Informed by Multiple Streams Theory

    Directory of Open Access Journals (Sweden)

    Neale Smith

    2016-01-01

    Full Text Available Background In this article, we analyze one case instance of how proposals for change to the priority setting and resource allocation (PSRA processes at a Canadian healthcare institution reached the decision agenda of the organization’s senior leadership. We adopt key concepts from an established policy studies framework – Kingdon’s multiple streams theory – to inform our analysis. Methods Twenty-six individual interviews were conducted at the IWK Health Centre in Halifax, NS, Canada. Participants were asked to reflect upon the reasons leading up to the implementation of a formal priority setting process – Program Budgeting and Marginal Analysis (PBMA – in the 2012/2013 fiscal year. Responses were analyzed qualitatively using Kingdon’s model as a template. Results The introduction of PBMA can be understood as the opening of a policy window. A problem stream – defined as lack of broad engagement and information sharing across service lines in past practice – converged with a known policy solution, PBMA, which addressed the identified problems and was perceived as easy to use and with an evidence-base from past applications across Canada and elsewhere. Conditions in the political realm allowed for this intervention to proceed, but also constrained its potential outcomes. Conclusion Understanding in a theoretically-informed way how change occurs in healthcare management practices can provide useful lessons to researchers and decision-makers whose aim is to help health systems achieve the most effective use of available financial resources.

  20. Encoding of naturalistic optic flow by motion sensitive neurons of nucleus rotundus in the zebra finch (Taeniopygia guttata.

    Directory of Open Access Journals (Sweden)

    Dennis Eckmeier

    2013-09-01

    Full Text Available The retinal image changes that occur during locomotion, the optic flow, carry information about self-motion and the three-dimensional structure of the environment. Especially fast moving animals with only little binocular vision depend on these depth cues for manoeuvring. They actively control their gaze to facilitate perception of depth based on cues in the optic flow. In the visual system of birds, nucleus rotundus neurons were originally found to respond to object motion but not to background motion. However, when background and object were both moving, responses increase the more the direction and velocity of object and background motion on the retina differed. These properties may play a role in representing depth cues in the optic flow. We therefore investigated how neurons in nucleus rotundus respond to optic flow that contains depth cues. We presented simplified and naturalistic optic flow on a panoramic LED display while recording from single neurons in nucleus rotundus of anaesthetized zebra finches. Unlike most studies on motion vision in birds, our stimuli included depth information. We found extensive responses of motion selective neurons in nucleus rotundus to optic flow stimuli. Simplified stimuli revealed preferences for optic flow reflecting translational or rotational self-motion. Naturalistic optic flow stimuli elicited complex response modulations, but the presence of objects was signalled by only few neurons. The neurons that did respond to objects in the optic flow, however, show interesting properties.

  1. A matched-pair cluster design study protocol to evaluate implementation of the Canadian C-spine rule in hospital emergency departments: Phase III

    OpenAIRE

    Rowe Brian H; Lesiuk Howard J; Coyle Doug; Wells George A; Grimshaw Jeremy; Stiell Ian G; Brison Robert J; Schull Michael; Lee Jacques; Clement Catherine M

    2007-01-01

    Abstract Background Physicians in Canadian emergency departments (EDs) annually treat 185,000 alert and stable trauma victims who are at risk for cervical spine (C-spine) injury. However, only 0.9% of these patients have suffered a cervical spine fracture. Current use of radiography is not efficient. The Canadian C-Spine Rule is designed to allow physicians to be more selective and accurate in ordering C-spine radiography, and to rapidly clear the C-spine without the need for radiography in m...

  2. Neuroleptic-induced movement disorders in a naturalistic schizophrenia population: diagnostic value of actometric movement patterns

    Directory of Open Access Journals (Sweden)

    Tuisku Katinka

    2008-04-01

    Full Text Available Abstract Background Neuroleptic-induced movement disorders (NIMDs have overlapping co-morbidity. Earlier studies have described typical clinical movement patterns for individual NIMDs. This study aimed to identify specific movement patterns for each individual NIMD using actometry. Methods A naturalistic population of 99 schizophrenia inpatients using conventional antipsychotics and clozapine was evaluated. Subjects with NIMDs were categorized using the criteria for NIMD found in the Diagnostic and Statistical Manual for Mental Disorders – Fourth Edition (DSM-IV. Two blinded raters evaluated the actometric-controlled rest activity data for activity periods, rhythmical activity, frequencies, and highest acceleration peaks. A simple subjective question was formulated to test patient-based evaluation of NIMD. Results The patterns of neuroleptic-induced akathisia (NIA and pseudoakathisia (PsA were identifiable in actometry with excellent inter-rater reliability. The answers to the subjective question about troubles with movements distinguished NIA patients from other patients rather well. Also actometry had rather good screening performances in distinguishing akathisia from other NIMD. Actometry was not able to reliably detect patterns of neuroleptic-induced parkinsonism and tardive dyskinesia. Conclusion The present study showed that pooled NIA and PsA patients had a different pattern in lower limb descriptive actometry than other patients in a non-selected sample. Careful questioning of patients is a useful method of diagnosing NIA in a clinical setting.

  3. The effect of a naturalistic stressor on frontal EEG asymmetry, stress, and health.

    Science.gov (United States)

    Lewis, Richard S; Weekes, Nicole Y; Wang, Tracy H

    2007-07-01

    The aim of the current study was to investigate the effect of a naturalistic stressor, examination stress, on frontal EEG asymmetry, psychological stress, hormonal stress, and negative health. Forty-nine subjects were tested during periods of low and high examination stress. During the high examination stress period, subjects reported higher levels of stress on the Spielberger State Anxiety Inventory and Cohen's Perceived Stress Scale. However, no change in cortisol was detected across the two sessions. Furthermore, a shift from relatively greater left frontal activity during the low examination session to relatively greater right frontal activity during the high examination session was also found. Moreover, the increasing right frontal activity asymmetry associated with the high exam session compared to the low exam session correlated with increasing reports of negative health. No evidence was found for the prediction that cortisol mediated either the relationship between examination stressor and right frontal asymmetry or between right frontal asymmetry and negative health. In conclusion, while the findings from this study are compelling, the mechanism mediating increases in psychological stress, relatively greater right frontal activity, and increases in negative health from naturally occurring stressors is in need of further investigation. PMID:17512106

  4. Road Safety Data, Collection, Transfer and Analysis DaCoTa. Workpackage 6, Driver Behaviour Monitoring through Naturalistic Driving: Deliverable 6.3: Report on small scale naturalistic driving pilot.

    NARCIS (Netherlands)

    Pilgerstorfer, M. Runda, K. Brandstätter, C. Christoph, M. Hakkert, S. Ishaq, R. Toledo, T. & Gatscha, M.

    2012-01-01

    WP6 of DaCoTA, Driver Behaviour Monitoring through Naturalistic Driving, aims to develop an implementation plan for a large scale activity that uses Naturalistic Driving (ND) Observations to continuously monitor relevant road safety data within the framework of the European Road Safety Observatory.

  5. Road Safety Data, Collection, Transfer and Analysis DaCoTa. Workpackage 6, Driver Behaviour Monitoring through Naturalistic Driving: Deliverable 6.5: Naturalistic Driving for cross-national monitoring of SPIs and Exposure : an overview.

    NARCIS (Netherlands)

    Wegman, R.W.N. & Bos, N.M.

    2015-01-01

    WP6 of DaCoTA, Driver Behaviour Monitoring through Naturalistic Driving, focuses on the usefulness and feasibility of applying the Naturalistic Driving method for monitoring within the framework of ERSO. The aim is to continuously collect comparable information about the road safety level in EU Memb

  6. Hookah use prevalence, predictors, and perceptions among Canadian youth: findings from the 2012/2013 Youth Smoking Survey

    OpenAIRE

    Minaker, Leia M.; Shuh, Alanna; Burkhalter, Robin J.; Manske, Steve R.

    2015-01-01

    Purpose Few national surveys currently assess hookah smoking among youth. This study describes the prevalence, patterns of use, and perceptions about hookah in a nationally representative survey of Canadian grades 9–12 students. Methods The Youth Smoking Survey 2012/2013 was administered to 27,404 Canadian grades 9–12 students attending schools in nine Canadian provinces representing 96 % of Canadian population. Relevant dichotomous outcomes included ever use, use in the last 30 days, and the...

  7. Canadian cogeneration economics

    International Nuclear Information System (INIS)

    An aggressive cogeneration industry has developed in Canada, and is becoming a tool for provincial utilities to manage the procurement of independently generated power, while restricting plant size, maximizing socioeconomic benefit, minimizing environmental impacts and managing their own risks. An overview is presented of the economics of cogeneration in Canada. The Canadian cogeneration industry is driven by 3 key economic factors: utility power sale contracts, fuel pricing, and tax benefits. Utility cogeneration purchases, tax benefits, fuel prices, cogeneration efficiency, fuels, fuel strategies, displacement projects, solid fuel vs natural gas, operating flexibility, gas turbines, heat recovery steam generators, industrial and aeroderivative units, combined cycle steam turbines, steam injection, supplementary or duct firing, financial aspects and project management are discussed. 15 figs., 7 tabs

  8. "An aristocracy of talent": the South Carolina physician-naturalists and their times.

    Science.gov (United States)

    Bryan, Charles S; Whitehead, A Weaver

    2014-01-01

    During the natural history movement of the 18th and early 19th centuries, Charleston as a center was rivaled in the United States only by Philadelphia, New York, and Boston. Prominent physician-naturalists included Alexander Garden (for whom the gardenia is named), John Edwards Holbrook ("father of American herpetology"), and Francis Peyre Porcher (whose Resources of Southern Fields and Forests helped Confederates compensate for drug shortages). The Charleston physician-naturalists belonged to an "aristocracy of talent" as distinguished from the "aristocracy of wealth" of lowcountry planters, who probably did more than any other group to perpetuate slavery and propel the South toward a disastrous civil war. None of the physician-naturalists actively opposed slavery or secession, a reminder that we are all prisoners of the prevailing paradigms and prejudices of our times. PMID:25125748

  9. “An Aristocracy of Talent”: The South Carolina Physician-Naturalists and their Times

    Science.gov (United States)

    Bryan, Charles S.; Whitehead, A. Weaver

    2014-01-01

    During the natural history movement of the 18th and early 19th centuries, Charleston as a center was rivaled in the United States only by Philadelphia, New York, and Boston. Prominent physician-naturalists included Alexander Garden (for whom the gardenia is named), John Edwards Holbrook (“father of American herpetology”), and Francis Peyre Porcher (whose Resources of Southern Fields and Forests helped Confederates compensate for drug shortages). The Charleston physician-naturalists belonged to an “aristocracy of talent” as distinguished from the “aristocracy of wealth” of lowcountry planters, who probably did more than any other group to perpetuate slavery and propel the South toward a disastrous civil war. None of the physician-naturalists actively opposed slavery or secession, a reminder that we are all prisoners of the prevailing paradigms and prejudices of our times. PMID:25125748

  10. Rates of influenza vaccination in older adults and factors associated with vaccine use: A secondary analysis of the Canadian Study of Health and Aging

    Directory of Open Access Journals (Sweden)

    Merry Heather

    2004-08-01

    Full Text Available Abstract Background Influenza vaccination has been shown to reduce morbidity and mortality in the older adult population. In Canada, vaccination rates remain suboptimal. We identified factors predictive of influenza vaccination, in order to determine which segments of the older adult population might be targeted to increase coverage in influenza vaccination programs. Methods The Canadian Study of Health and Aging (CSHA is a population-based national cohort study of 10263 older adults (≥ 65 conducted in 1991. We used data from the 5007 community-dwelling participants in the CSHA without dementia for whom self-reported influenza vaccination status is known. Results Of 5007 respondents, 2763 (55.2% reported having received an influenza vaccination within the previous 2 years. The largest predictive factors for flu vaccination included: being married (57.4 vs. 52.6%, p = 0.0007, having attained a higher education (11.0 vs. 10.3 years, p While many other differences were statistically significant, most were small (e.g. mean age 75.1 vs. 74.6 years for immunized vs. unimmunized older adults, p = 0.006, higher Modified Mini Mental Status Examination score (89.9 vs. 89.1, p Residents of Ontario were more likely (64.6% to report vaccination (p Conclusions The vaccination rate in this sample, in whom influenza vaccination is indicated, was low (55.2%. Even in a publicly administered health care setting, influenza vaccination did not reach an important proportion of the elderly population. Whether these differences reflect patient preference or access remains to be determined.

  11. Recommendations for improving the end-of-life care system for homeless populations: A qualitative study of the views of Canadian health and social services professionals

    Directory of Open Access Journals (Sweden)

    McNeil Ryan

    2012-09-01

    Full Text Available Abstract Background Homeless populations have complex and diverse end-of-life care needs. However, they typically die outside of the end-of-life care system. To date, few studies have explored barriers to the end-of-life care system for homeless populations. This qualitative study involving health and social services professionals from across Canada sought to identify barriers to the end-of-life care system for homeless populations and generate recommendations to improve their access to end-of-life care. Methods Semi-structured qualitative interviews were conducted with 54 health and social services professionals involved in end-of-life care services delivery to homeless persons in six Canadian cities (Halifax, Hamilton, Ottawa, Thunder Bay, Toronto and Winnipeg. Participants included health administrators, physicians, nurses, social workers, harm reduction specialists, and outreach workers. Interviews were audio-recorded, transcribed verbatim and analysed thematically. Results Participants identified key barriers to end-of-life care services for homeless persons, including: (1 insufficient availability of end-of-life care services; (2 exclusionary operating procedures; and, (3 poor continuity of care. Participants identified recommendations that they felt had the potential to minimize these barriers, including: (1 adopting low-threshold strategies (e.g. flexible behavioural policies and harm reduction strategies; (2 linking with population-specific health and social care providers (e.g. emergency shelters; and, (3 strengthening population-specific training. Conclusions Homeless persons may be underserved by the end-of-life care system as a result of barriers that they face to accessing end-of-life care services. Changes in the rules and regulations that reflect the health needs and circumstances of homeless persons and measures to improve continuity of care have the potential to increase equity in the end-of-life care system for this

  12. High performance in healthcare priority setting and resource allocation: A literature- and case study-based framework in the Canadian context.

    Science.gov (United States)

    Smith, Neale; Mitton, Craig; Hall, William; Bryan, Stirling; Donaldson, Cam; Peacock, Stuart; Gibson, Jennifer L; Urquhart, Bonnie

    2016-08-01

    Priority setting and resource allocation, or PSRA, are key functions of executive teams in healthcare organizations. Yet decision-makers often base their choices on historical patterns of resource distribution or political pressures. Our aim was to provide leaders with guidance on how to improve PSRA practice, by creating organizational contexts which enable high performance. We carried out in-depth case studies of six Canadian healthcare organizations to obtain from healthcare leaders their understanding of the concept of high performance in PSRA and the factors which contribute to its achievement. Individual and group interviews were carried out (n = 62) with senior managers, middle managers and Board members. Site observations and document review were used to assist researchers in interpreting the interview data. Qualitative data were analyzed iteratively with the literature on empirical examples of PSRA practice, in order to develop a framework of high performance in PSRA. The framework consists of four domains - structures, processes, attitudes and behaviours, and outcomes - within which are 19 specific elements. The emergent themes derive from case studies in different kinds of health organizations (urban/rural, small/large) across Canada. The elements can serve as a checklist for 'high performance' in PSRA. This framework provides a means by which decision-makers in healthcare might assess their practice and identify key areas for improvement. The findings are likely generalizable, certainly within Canada but also across countries. This work constitutes, to our knowledge, the first attempt to present a full package of elements comprising high performance in health care PSRA. PMID:27367899

  13. Heavy metal bioaccumulation and histopathological alterations in wild Arctic hares (Lepus arcticus) inhabiting a former lead-zinc mine in the Canadian high Arctic: A preliminary study.

    Science.gov (United States)

    Amuno, S; Niyogi, S; Amuno, M; Attitaq, J

    2016-06-15

    A preliminary study was undertaken to determine post-mining baseline accumulation of selected trace metals, and histopathological alterations in free-living arctic hares (Lepus arcticus) inhabiting the vicinity of a former lead-zinc mine located on North Baffin Island in the Canadian High Arctic. Trace metal analysis included measurement of As, Cd, Fe, Pb and Zn in tissues, and histopathological assessment comprised of evaluation and scoring the severity of metal-induced hepatic and renal lesions. Metal contents in hepatic and renal tissues from hares from the mine area compared with the reference locations did not differ significantly suggesting that the animals are not uniformly exposed to background levels of metals in the environment. However, relatively higher accumulation pattern of Pb and Cd were noted in liver tissues of hare from the mine area compared to the background area, but did not induce increased lesions. Surface soils near the mine area contained relatively higher levels of trace metals (Zn>Mn>Pb>Cd>As) compared to reference soils, and with soil levels of Cd showing strong correlation with Cd accumulation in kidney tissues. Generally, both case and reference animals showed similar but varying severities of hepatic and renal lesions at the sublethal level, notably vascular congestion, occasional large hepatocyte nuclei, binucleate hepatocytes, yellow-brown pigmentation in the cytoplasm of hepatocytes and clustering of lymphocytes. Only hares with relatively higher accumulation of Pb from the mine area showed evidence of renal edema and hemorrhage of the capsular surface. This study constitutes the first assessment of metal induced histopathological alterations in arctic hares exposed to a historical mining area in the high arctic. PMID:26974573

  14. From naturalistic neuroscience to modeling radical embodiment with narrative enactive systems.

    Science.gov (United States)

    Tikka, Pia; Kaipainen, Mauri Ylermi

    2014-01-01

    Mainstream cognitive neuroscience has begun to accept the idea of embodied mind, which assumes that the human mind is fundamentally constituted by the dynamical interactions of the brain, body, and the environment. In today's paradigm of naturalistic neurosciences, subjects are exposed to rich contexts, such as video sequences or entire films, under relatively controlled conditions, against which researchers can interpret changes in neural responses within a time window. However, from the point of view of radical embodied cognitive neuroscience, the increasing complexity alone will not suffice as the explanatory apparatus for dynamical embodiment and situatedness of the mind. We suggest that narrative enactive systems with dynamically adaptive content as stimuli, may serve better to account for the embodied mind engaged with the surrounding world. Among the ensuing challenges for neuroimaging studies is how to interpret brain data against broad temporal contexts of previous experiences that condition the unfolding experience of nowness. We propose means to tackle this issue, as well as ways to limit the exponentially growing combinatoria of narrative paths to a controllable number. PMID:25339890

  15. Immediate memory for "when, where and what": Short-delay retrieval using dynamic naturalistic material.

    Science.gov (United States)

    Kwok, Sze Chai; Macaluso, Emiliano

    2015-07-01

    We investigated the neural correlates supporting three kinds of memory judgments after very short delays using naturalistic material. In two functional magnetic resonance imaging (fMRI) experiments, subjects watched short movie clips, and after a short retention (1.5-2.5 s), made mnemonic judgments about specific aspects of the clips. In Experiment 1, subjects were presented with two scenes and required to either choose the scene that happened earlier in the clip ("scene-chronology"), or with a correct spatial arrangement ("scene-layout"), or that had been shown ("scene-recognition"). To segregate activity specific to seen versus unseen stimuli, in Experiment 2 only one probe image was presented (either target or foil). Across the two experiments, we replicated three patterns underlying the three specific forms of memory judgment. The precuneus was activated during temporal-order retrieval, the superior parietal cortex was activated bilaterally for spatial-related configuration judgments, whereas the medial frontal cortex during scene recognition. Conjunction analyses with a previous study that used analogous retrieval tasks, but a much longer delay (>1 day), demonstrated that this dissociation pattern is independent of retention delay. We conclude that analogous brain regions mediate task-specific retrieval across vastly different delays, consistent with the proposal of scale-invariance in episodic memory retrieval. PMID:25773646

  16. Naturalistic Decision Making in Power Grid Operations: Implications for Dispatcher Training and Usability Testing

    Energy Technology Data Exchange (ETDEWEB)

    Greitzer, Frank L.; Podmore, Robin

    2008-11-17

    The focus of the present study is on improved training approaches to accelerate learning and improved methods for analyzing effectiveness of tools within a high-fidelity power grid simulated environment. A theory-based model has been developed to document and understand the mental processes that an expert power system operator uses when making critical decisions. The theoretical foundation for the method is based on the concepts of situation awareness, the methods of cognitive task analysis, and the naturalistic decision making (NDM) approach of Recognition Primed Decision Making. The method has been systematically explored and refined as part of a capability demonstration of a high-fidelity real-time power system simulator under normal and emergency conditions. To examine NDM processes, we analyzed transcripts of operator-to-operator conversations during the simulated scenario to reveal and assess NDM-based performance criteria. The results of the analysis indicate that the proposed framework can be used constructively to map or assess the Situation Awareness Level of the operators at each point in the scenario. We can also identify the mental models and mental simulations that the operators employ at different points in the scenario. This report documents the method, describes elements of the model, and provides appendices that document the simulation scenario and the associated mental models used by operators in the scenario.

  17. From naturalistic neuroscience to modeling radical embodiment with narrative enactive systems

    Directory of Open Access Journals (Sweden)

    Pia eTikka

    2014-10-01

    Full Text Available Mainstream cognitive neuroscience has begun to accept the idea of embodied mind, which assumes that the human mind is fundamentally constituted by the dynamical interactions of the brain, body, and the environment. In today’s paradigm of naturalistic neurosciences, subjects are exposed to rich contexts, such as video sequences or entire films, under relatively controlled conditions, against which researchers can interpret changes in neural responses within a time window. However, from the point of view of radical embodied cognitive neuroscience, the increasing complexity alone will not suffice as the explanatory apparatus for dynamical embodiment and situatedness of the mind. We suggest that narrative enactive systems with dynamically adaptive content as stimuli,may serve better to account for the embodied mind engaged with the surrounding world. Among the ensuing challenges for neuroimaging studies is how to interpret brain data against broad temporal contexts of previous experiences that condition the unfolding experience of nowness. We propose means to tackle this issue, as well as ways to limit the exponentially growing combinatoria of narrative paths to a controllable number.

  18. Naturalistic Engineering for risk prevention in two slopes in southern Quito

    Directory of Open Access Journals (Sweden)

    Anita Argüello

    2013-12-01

    Full Text Available (Received: 2013/11/01 - Accepted: 2013/12/12Naturalistic engineering is a technical-scientific modern science cobining civil, environmental and geotechnical engineerings. It studies and uses building materials, plants, organic and synthetic materials for holding slopes. San Luis de Chillogallo and El Recreo are located in the South of Quito, where two projects for erosion control, containment and environmental recovery, have been implemented. These are pilot interventions that allow applying strategies and capabilities of estimation and reduction of risks from disasters. To implement the works, the ground was shifted, the organic and inorganic matter was wiped out, and unstable parts of the slope were removed, reshaping the slope through land exclusion and relocation. Subsequently, depending on the shape of each slope, specific techniques where designed and implemented. Double Wall Crib and Latin Triangular Branching techniques were used in San Luis de Chillogallo. Live Grating and Latino Triangular Branching techniques were used in El Recreo. Plants such as: Alder, Alnus glutinosa; paper tree, Polylepis sp.; chilca, Baccharis latifolia; lechero Euphorbia lactiflua and Tilo, Tilia platyphyllos; have been used in these projects. These plants are fast growing species and they have adapted successfully on the two slopes intervened.

  19. [Nature and culture in the eyes of a nineteenth-century naturalist: Wallace and the Amazon].

    Science.gov (United States)

    Alves, José Jerônimo de Alencar

    2011-01-01

    Alfred Russel Wallace traveled through the Amazon from 1848 to 1852. His perceptions of the region were informed by his systematized knowledge but also influenced by judgments of an ethical and aesthetic nature, as was common among naturalists. He saw the region's 'natives' as peaceful and friendly but likewise susceptible to the vices of civilization. Nature afforded a privileged setting both for the activities of natural history and for aesthetic pleasures. These features helped keep the naturalist in the region, where he could thus engage in his scientific activities. PMID:22012097

  20. Canadian National Vegetation Classification (CNVC)

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The mandate of the CNVC is to comprehensively classify and describe natural and semi-natural Canadian vegetation in an ecologically meaningful manner. The...

  1. Tornado Mitigation in the Canadian Prairie Region

    OpenAIRE

    Durage, Samanthi, Prof.

    2014-01-01

    Tornadoes are a destructive form of the extreme weather associated with thunderstorms. Canada gets more tornadoes than any other country with the exception of the US. This paper presents some results of a study on tornado mitigation in the Canadian Prairie region. Initially, a regression-based analysis of the Prairie tornado database was conducted, and the trend for the number of tornadoes reported in each year is discussed in this paper. The detection, warning, communication, and evacuation ...

  2. Influence of Organic Management with Different Crop Rotations on Selected Productivity Parameters in a Long-Term Canadian Field Study

    OpenAIRE

    Entz, Martin; Hoeppner, J.W.; Tenuta, M.; Bamford, K.C.; Holliday, N.; Wilson, Leanne C.

    2005-01-01

    The Glenlea long-term rotation study, located near Winnipeg, is Canada’s oldest conventional vs organic crop comparison study. Since 1992, three farming systems (grain only; grain with green manure crops; combined grain-forage rotation) were evaluated under two management systems (organic and conventional). Organic system ranked higher than conventional systems in energy efficiency and biodiversity while conventional system ranked higher in yield, weed management and soil nutrient status. ...

  3. 1944. The Canadians in Normandy

    OpenAIRE

    W.A. Dorning

    2012-01-01

    The story of the Allied invasion of France in June 1944 has been told in countless military-history books. Previous publications on the Allied invasion and the subsequent Normandy campaign have, however, tended to concentrate on the British and American role in the fighting, while the Canadian contribution has received scant attention. This in itself is surprising, as the Canadians played a far from peripheral role in the invasion and the campaign which followed in the hinterland of Normandy....

  4. "Around here, they roll up the sidewalks at night": a qualitative study of youth living in a rural Canadian community.

    Science.gov (United States)

    Shoveller, Jean; Johnson, Joy; Prkachin, Ken; Patrick, David

    2007-12-01

    The paper is based on an ethnographic study conducted in a rural community in British Columbia, Canada. The study examined the impact of community culture on youth's development as sexual beings. We describe how social and geographical forces intersect to affect youth's lives and trace the ways in which deprivation of various forms of capital as well as social practices contribute to some youth being located in undesirable social positions. Our findings illustrate how the effects of stigmatisation, self-segregation, and other forms of symbolic violence can extend beyond health impacts and into the broader social realm. PMID:17368073

  5. Social Capital and Ethno-Cultural Diverse Immigrants: A Canadian Study on Settlement House and Social Integration

    Science.gov (United States)

    Yan, Miu Chung; Lauer, Sean

    2008-01-01

    With ethno-culturally diverse immigrants arriving in constantly increasing numbers, connecting newcomers to residents in the local community is a growing challenge. Settlement houses have traditionally been the "machinery of connection" that bridges such diverse groups. This article reports the results of a study on settlement houses in an urban…

  6. Lived Literacy Curriculum in a Globalized Schooling Context: A Case Study of a Sino-Canadian Transnational Programme

    Science.gov (United States)

    Zhang, Zheng; Heydon, Rachel

    2014-01-01

    This paper focuses on the lived curriculum from the vantage of the students in a case study of a Sino-Canada transnational education programme in China. The programme consisted of subject area curricula transplanted from Ontario, Canada, and taught in English, as well as subject area curricula from Mainland China that was taught in Mandarin. The…

  7. Survey of Canadian hospitals radiation emergency plans

    International Nuclear Information System (INIS)

    This report documents the findings of a survey of Canadian hospitals conducted by Social Data Research Ltd. during the Spring and Summer, 1995. The main objective of the survey was to determine the state of readiness of Canadian hospitals in respect of radiation emergency planning. In addition, the AECB was interested in knowing the extent to which a report by the Group of Medical Advisors, 'GMA-3: Guidelines on Hospital Emergency Plans for the Management of Minor Radiation Accidents', which was sponsored and distributed in 1993, was received and was useful to hospital administrators and emergency personnel. A self-administered questionnaire was distributed to 598 acute care hospitals, and 274 responses were received. The main conclusion of this study is that, with the exception of a few large institutions, hospitals generally do not have specific action plans to handle minor radiation accidents. (author)

  8. Canadian petroleum history bibliography. Release update

    Energy Technology Data Exchange (ETDEWEB)

    Cass, D.

    2010-01-07

    The petroleum history bibliography was created over several years as a record dedicated to preserving the history of the Canadian petroleum industry. It comprises a list of more than 5000 publications, including books, theses, films, audio tapes, published articles and stories of the many companies that have come and gone. It aims to include all publications and audio visual products from the Social Sciences and Humanities on company histories, biographies, autobiographies, fiction, poetry and humour. An author index is included. Most government documents are excluded as they are accessible through Library and Archives Canada. This bibliography is an ongoing piece of work, and welcomes any additions relating to the study and preservation of Canadian petroleum industry history.

  9. Canadian gas surplus to linger through 1995

    International Nuclear Information System (INIS)

    This paper reports that Canada's natural gas surplus will persist at least through 1995, although the gap between production and deliverability will narrow. Meantime, prices will slowly rise, the Canadian Energy Research Institute (CERI) predicts. The Calgary firm says surplus productive capacity will fall to 426 bcf in 1992 from 874 bcf in 1990. Those volumes amount to 12% and 25%, respectively, of deliverability. Prices for a processing plant's outlet stream, pegged at $1.38 (Canadian)/Mcf in 1991, will inch up to $1.53 in 1994, then climb to $1.69 in 1995, all in current dollars. Prices will firm as a reduced surplus reduces sales competition among producers. Increasing sales as a result of expanded export pipeline capacity will be a major factor in reducing surplus capacity. The study says after 1995 increased drilling will raise productive capacity and create some downward pressure on prices

  10. From theory to practice: a Canadian case study of the utility of climate change adaptation frameworks to address health impacts

    OpenAIRE

    Clarke, Kaila-Lea; Berry, Peter

    2011-01-01

    Objective It is now recognized that climate change affects human health. The question is how to adapt. This article examines mainstreaming climate considerations into public health programs and the utility of climate change and health adaptation frameworks, using Ontario, Canada, as a case study. Methods A literature review identified climate change and health adaptation frameworks for comparison with the Ontario Public Health Standards. Key informant interviews gauged the extent to which cli...

  11. Individual, social, environmental, and physical environmental correlates with physical activity among Canadians: a cross-sectional study

    OpenAIRE

    Craig Cora; Morrison Howard; DesMeules Marie; Cameron Christine; Pan Sai; Jiang XiaoHong

    2009-01-01

    Abstract Background The identification of various individual, social and physical environmental factors affecting physical activity (PA) behavior in Canada can help in the development of more tailored intervention strategies for promoting higher PA levels in Canada. This study examined the influences of various individual, social and physical environmental factors on PA participation by gender, age and socioeconomic status, using data from the 2002 nationwide survey of the Physical Activity M...

  12. Opportunities for prevention and intervention with young children: lessons from the Canadian incidence study of reported child abuse and neglect

    OpenAIRE

    Fallon Barbara; Ma Jennifer; Allan Kate; Pillhofer Melanie; Trocmé Nico; Jud Andreas

    2013-01-01

    Abstract Background The most effective way to provide support to caregivers with infants in order to promote good health, social, emotional and developmental outcomes is the subject of numerous debates in the literature. In Canada, each province adopts a different approach which range from universal to targeted programs. Nonetheless, each year a group of vulnerable infants is identified to the child welfare system with concerns about their well-being and safety. This study examines maltreatme...

  13. Building Common Ground in Intercultural Encounters:a Study of Classroom Interaction in an Employment Preparation Programme for Canadian Immigrants

    OpenAIRE

    Victoria, Mabel

    2011-01-01

    This thesis focuses on how a group of linguistically and culturally diverse individuals in an employment preparation class for immigrants to Canada use communicative strategies and resources to build common ground, that is, how they use language to form a socially cohesive group that foregrounds shared knowledge, shared relational identity, in-group membership and shared attitudes and feelings. The thesis draws from a 12-week ethnographically informed study using participant observation w...

  14. A study of Canadian authorship in selected SPARC Alternative journals in the early years after their introduction

    OpenAIRE

    Dupuis, John; Fernandez, Leila

    2007-01-01

    The Scholarly Publishing and Academic Resources Coalition (SPARC) is an initiative of the Association of Research Libraries. In 1998 SPARC introduced the Alternative Program working with partners to launch new journals to compete with existing high-priced titles in the STM field. Currently there are 11 titles in this program listed on the website (http://www.arl.org/sparc/partner/partnerlist.html), three of which are freely accessible. This study examines the earliest adopters, Organic Letter...

  15. The Association between Health Behaviours and Academic Performance in Canadian Elementary School Students: A Cross-Sectional Study

    OpenAIRE

    McIsaac, Jessie-Lee D.; Kirk, Sara F. L.; Stefan Kuhle

    2015-01-01

    Background: Establishing early healthy eating and physical activity behaviours is critical in supporting children’s long-term health and well-being. The objective of the current paper was to examine the association between health behaviours and academic performance in elementary school students in a school board in Nova Scotia, Canada. Methods: Our population-based study included students in grades 4–6 across 18 schools in a rural school board. Diet and physical activity were assessed throu...

  16. Study of Heavy Metals in a Wetland Area Adjacent to a Waste Disposal Site Near Resolute Bay, Canadian High Arctic

    Science.gov (United States)

    Lund, K. E.; Young, K. L.

    2004-05-01

    Heavy metal contamination in High Arctic systems is of growing concern. Studies have been conducted measuring long range and large point source pollutants, but little research has been done on small point sources such as municipal waste disposal sites. Many Arctic communities are coastal, and local people consume marine wildlife in which concentrations of heavy metals can accumulate. Waste disposal sites are often located in very close proximity to the coastline and leaching of these metals could contaminate food sources on a local scale. Cadmium and lead are the metals focussed on by this study, as the Northern Contaminants Program recognizes them as metals of concern. During the summer of 2003 a study was conducted near Resolute, Nunavut, Canada, to determine the extent of cadmium and lead leaching from a local dumpsite to an adjacent wetland. The ultimate fate of these contaminants is approximately 1 km downslope in the ocean. Transects covering an area of 0.3 km2 were established downslope from the point of disposal and water and soil samples were collected and analyzed for cadmium and lead. Only trace amounts of cadmium and lead were found in the water samples. In the soil samples, low uniform concentrations of cadmium were found that were slightly above background levels, except for adjacent to the point of waste input where higher concentrations were found. Lead soil concentrations were higher than cadmium and varied spatially with soil material and moisture. Overall, excessive amounts of cadmium and lead contamination do not appear to be entering the marine ecosystem. However, soil material and moisture should be considered when establishing waste disposal sites in the far north

  17. Lead speciation in indoor dust: a case study to assess old paint contribution in a Canadian urban house

    Energy Technology Data Exchange (ETDEWEB)

    Beauchemin, Suzanne; MacLean, Lachlan C.W.; Rasmussen, Pat E. (Health Canada); (NRC)

    2012-10-23

    Residents in older homes may experience increased lead (Pb) exposures due to release of lead from interior paints manufactured in past decades, especially pre-1960s. The objective of the study was to determine the speciation of Pb in settled dust from an urban home built during WWII. X-ray absorption near-edge structure (XANES) and micro-X-ray diffraction (XRD) analyses were performed on samples of paint (380-2,920 mg Pb kg{sup -1}) and dust (200-1,000 mg Pb kg{sup -1}) collected prior to renovation. All dust samples exhibited a Pb XANES signature similar to that of Pb found in paint. Bulk XANES and micro-XRD identified Pb species commonly found as white paint pigments (Pb oxide, Pb sulfate, and Pb carbonate) as well as rutile, a titanium-based pigment, in the <150 {micro}m house dust samples. In the dust fraction <36 {micro}m, half of the Pb was associated with the Fe-oxyhydroxides, suggesting additional contribution of outdoor sources to Pb in the finer dust. These results confirm that old paints still contribute to Pb in the settled dust for this 65-year-old home. The Pb speciation also provided a clearer understanding of the Pb bioaccessibility: Pb carbonate > Pb oxide > Pb sulfate. This study underscores the importance of taking precautions to minimize exposures to Pb in house dust, especially in homes where old paint is exposed due to renovations or deterioration of painted surfaces.

  18. Linear Discriminant Analysis Achieves High Classification Accuracy for the BOLD fMRI Response to Naturalistic Movie Stimuli.

    Science.gov (United States)

    Mandelkow, Hendrik; de Zwart, Jacco A; Duyn, Jeff H

    2016-01-01

    Naturalistic stimuli like movies evoke complex perceptual processes, which are of great interest in the study of human cognition by functional MRI (fMRI). However, conventional fMRI analysis based on statistical parametric mapping (SPM) and the general linear model (GLM) is hampered by a lack of accurate parametric models of the BOLD response to complex stimuli. In this situation, statistical machine-learning methods, a.k.a. multivariate pattern analysis (MVPA), have received growing attention for their ability to generate stimulus response models in a data-driven fashion. However, machine-learning methods typically require large amounts of training data as well as computational resources. In the past, this has largely limited their application to fMRI experiments involving small sets of stimulus categories and small regions of interest in the brain. By contrast, the present study compares several classification algorithms known as Nearest Neighbor (NN), Gaussian Naïve Bayes (GNB), and (regularized) Linear Discriminant Analysis (LDA) in terms of their classification accuracy in discriminating the global fMRI response patterns evoked by a large number of naturalistic visual stimuli presented as a movie. Results show that LDA regularized by principal component analysis (PCA) achieved high classification accuracies, above 90% on average for single fMRI volumes acquired 2 s apart during a 300 s movie (chance level 0.7% = 2 s/300 s). The largest source of classification errors were autocorrelations in the BOLD signal compounded by the similarity of consecutive stimuli. All classifiers performed best when given input features from a large region of interest comprising around 25% of the voxels that responded significantly to the visual stimulus. Consistent with this, the most informative principal components represented widespread distributions of co-activated brain regions that were similar between subjects and may represent functional networks. In light of these

  19. A comparative study of American, Australian, British, and Canadian museum visitors' understanding of the nature of evolutionary theory

    Science.gov (United States)

    Abraham-Silver, Linda M.

    2005-11-01

    The study was designed to identify the beliefs held by visitors to natural history museums with respect to evolution and its mechanism. Visitors' levels of rejection and acceptance of evolutionary theory, their associated explanatory frameworks, and understanding of the nature of biological evolution were examined to determine whether differences existed between populations of museum visitors in the United States, Australia, Canada, and Great Britain. Data were collected at three natural history museums located outside of the United States and compared with existing data from previous studies conducted using the same methodology in American natural history museums. One hundred sixty-one museum visitors were interviewed in person in the non-U.S. sites; their interviews were tape recorded, transcribed, coded, and analyzed (using primarily chi-square) to identify similarities, patterns, and relationships among the data sets. Museum visitors outside of the United States demonstrated much lower levels of rejection of evolutionary theory when compared with data collected in the U.S. museums (an overall 2% rate of rejection was observed in the non-U.S. sample, while a 9.5% rejection rate was observed in the American sample). Surprising results included the finding that non-U.S. individuals held similar levels of naive conceptions with regard to the nature of evolutionary theory and the sequence of geologic time when compared with their American counterparts. Less than half of all museum visitors interviewed outside of the United States were able to describe natural selection, the mechanism by which evolution is thought to operate. Study participants showed consistent and deeply held tendencies to apply teleological or Lamarkian explanations to describe the mechanism for evolutionary change. Significant correlations between participants' age, their level of education, and their rejection or acceptance of evolution were not found among the data derived from these non

  20. Does accreditation stimulate change? A study of the impact of the accreditation process on Canadian healthcare organizations

    Directory of Open Access Journals (Sweden)

    Shabah Abdo

    2010-04-01

    Full Text Available Abstract Background One way to improve quality and safety in healthcare organizations (HCOs is through accreditation. Accreditation is a rigorous external evaluation process that comprises self-assessment against a given set of standards, an on-site survey followed by a report with or without recommendations, and the award or refusal of accreditation status. This study evaluates how the accreditation process helps introduce organizational changes that enhance the quality and safety of care. Methods We used an embedded multiple case study design to explore organizational characteristics and identify changes linked to the accreditation process. We employed a theoretical framework to analyze various elements and for each case, we interviewed top managers, conducted focus groups with staff directly involved in the accreditation process, and analyzed self-assessment reports, accreditation reports and other case-related documents. Results The context in which accreditation took place, including the organizational context, influenced the type of change dynamics that occurred in HCOs. Furthermore, while accreditation itself was not necessarily the element that initiated change, the accreditation process was a highly effective tool for (i accelerating integration and stimulating a spirit of cooperation in newly merged HCOs; (ii helping to introduce continuous quality improvement programs to newly accredited or not-yet-accredited organizations; (iii creating new leadership for quality improvement initiatives; (iv increasing social capital by giving staff the opportunity to develop relationships; and (v fostering links between HCOs and other stakeholders. The study also found that HCOs' motivation to introduce accreditation-related changes dwindled over time. Conclusions We conclude that the accreditation process is an effective leitmotiv for the introduction of change but is nonetheless subject to a learning cycle and a learning curve. Institutions invest

  1. Assessment of public perception and environmental compliance at a pulp and paper facility: a Canadian case study.

    Science.gov (United States)

    Hoffman, Emma; Bernier, Meagan; Blotnicky, Brenden; Golden, Peter G; Janes, Jeffrey; Kader, Allison; Kovacs-Da Costa, Rachel; Pettipas, Shauna; Vermeulen, Sarah; Walker, Tony R

    2015-12-01

    Communities across Canada rely heavily on natural resources for their livelihoods. One such community in Pictou County, Nova Scotia, has both benefited and suffered, because of its proximity to a pulp and paper mill (currently owned by Northern Pulp). Since production began in 1967, there have been increasing impacts to the local environment and human health. Environmental reports funded by the mill were reviewed and compared against provincial and federal regulatory compliance standards. Reports contrasted starkly to societal perceptions of local impacts and independent studies. Most environmental monitoring reports funded by the mill indicate some levels of compliance in atmospheric and effluent emissions, but when compliance targets were not met, there was a lack of regulatory enforcement. After decades of local pollution impacts and lack of environmental compliance, corporate social responsibility initiatives need implementing for the mill to maintain its social licence to operate. PMID:26590146

  2. Canadian uranium fuel fabrication study: 1. Intake, retention and excretion monitoring results. 2. Comparison of results with metabolic models

    International Nuclear Information System (INIS)

    Twenty-five workers from two uranium fuel fabrication facilities, who had exposure histories of 2.5 to 21 years, were selected for examination of their uranium intakes, retention and excretion characteristics by means of personal air sampling, thorax measurement, and urinalysis, respectively. The aim of the study was to examine the feasibility of using a simple set of measurements of the above parameters to estimate doses to the workers in relation to the dose limits specified in the Atomic Energy Control Regulations. Significant correlation coefficients between uranium excretion and lung burden were observed. Moderate correlations were also found between uranium excretion and estimated pulmonary deposition for one facility's subjects. No correlation was observed between pulmonary deposition, as calculated from air sampling data, and retention of uranium in the lung. The personal air samples (PAS) and lung burden data collected from Company A in this study (Part I) have been used with standard ICRP models to calculate urinary excretion and these results compared to measured values. It was found that neither Class W or Class Y compounds would fit the data, but a combination of 50% Class W and Class Y, with modification to the retention of uranium in tissues and organs, would give reasonable results. However, a revised lung model alone was also shown to give good agreement between results and models. This revised lung model does not result in a committed effective dose equivalent per unit intake significantly different from that calculated for Class Y uranium, but gives significantly different excretion rates. The implications of this result for internal contamination monitoring and dose assessment are discussed

  3. A Phase I study of olaparib and irinotecan in patients with colorectal cancer: Canadian Cancer Trials Group IND 187.

    Science.gov (United States)

    Chen, Eric X; Jonker, Derek J; Siu, Lillian L; McKeever, Karyn; Keller, Deborah; Wells, Julie; Hagerman, Linda; Seymour, Lesley

    2016-08-01

    Background Olaparib is an orally available inhibitor of PARP-1. In pre-clinical studies, olaparib was shown to potentiate anti-tumor effects of irinotecan in colon cancer cell lines. This phase I study was conducted to evaluate the safety and tolerability of olaparib in combination with irinotecan. Patients and Methods Patients with advanced colorectal cancer whose disease progressed after at least one systemic therapy regimen were enrolled. Dose escalation and de-escalation were based on toxicity assessment. Pharmacokinetic samples were collected in Cycle 1 for olaparib, irinotecan and SN-38. Results Twenty-five patients were enrolled, 11 patients on a schedule of continuous olaparib and irinotecan every 3 weeks (Part A) and 14 patients on a schedule of intermittent olaparib and irinotecan every 2 weeks (Part B). Continuous olaparib administration was associated with higher than expected toxicities and was not considered to be tolerable. Intermittent olaparib administration was better tolerated, and the recommended phase 2 doses were olaparib 50 mg p.o twice daily days 1-5 and irinotecan 125 mg/m(2) i.v. every 2 weeks. Common toxicities included fatigue, anorexia, diarrhea, nausea, vomiting, neutropenia, thrombocytopenia and abdominal pain. Nine patients had stable disease as the best response, 2 from Part A (3 and 9 months respectively), and 7 from Part B (median duration: 7.4 months; range: 4 to 13 months). There was no pharmacokinetic interaction between olaparib and irinotecan. Conclusions Olaparib can be combined with irinotecan if administered intermittently. Both olaparib and irinotecan required significant dose reductions. The lack of anti-tumor efficacy observed in this trial makes this combination of little interest for further clinical development. Trial Registration ID NCT00535353. PMID:27075016

  4. Canadian fuel development program

    International Nuclear Information System (INIS)

    CANDU power reactor fuel has demonstrated an enviable operational record. More than 99.9% of the bundles irradiated have provided defect-free service. Defect excursions are responsible for the majority of reported defects. In some cases research and development effort is necessary to resolve these problems. In addition, development initiatives are also directed at improvements of the current design or reduction of fueling cost. The majority of the funding for this effort has been provided by COG (CANDU Owners' Group) over the past 10 to 15 years. This paper contains an overview of some key fuel technology programs within COG. The CANDU reactor is unique among the world's power reactors in its flexibility and its ability to use a number of different fuel cycles. An active program of analysis and development, to demonstrate the viability of different fuel cycles in CANDU, has been funded by AECL in parallel with the work on the natural uranium cycle. Market forces and advances in technology have obliged us to reassess and refocus some parts of our effort in this area, and significant success has been achieved in integrating all the Canadian efforts in this area. This paper contains a brief summary of some key components of the advanced fuel cycle program. (Author) 4 figs., tab., 18 refs

  5. Canadian leadership in energy

    International Nuclear Information System (INIS)

    Canada's energy is complex and an important resource as it fuels and funds the economy. The unique character of Canada's energy production and consumption provides strength to the country. The purpose of this booklet was to highlight Canada's energy production and consumption and to demonstrate Canada's rank globally with other major global energy players. The document also presented information on the value of Canada's energy exports, Canada's relationship with the United States, and Canada's energy-related carbon dioxide emissions. Specifically, the document discussed Canada's energy in a global context; the value of Canada's energy exports; domestic value of energy; Canada's unique energy mix; Canada's electricity mix; Canada's carbon dioxide emissions; energy strategies; and the importance of energy to Canadians. It was concluded that there are 14 federal, provincial and territorial jurisdictions managing their respective energy resources. All of these regions, with the exception of Saskatchewan have produced an energy strategy document or a climate change action plan focusing on 8 areas of action, notably awareness; benefit; efficiency; development; diversification; electricity; and emissions. refs., tabs., figs.

  6. Counting Birds at the Grassroots: Making a Census into "Citizen Science," Naturalists Share Their Findings Online.

    Science.gov (United States)

    Gorman, James

    2001-01-01

    The Audubon Society and the Cornell Lab of Ornithology are promoting various "citizen science" projects in which amateur naturalists make local observations of birds, butterflies, or natural phenomena and report their observations to interactive databases on the World Wide Web. Events such as the Great Backyard Bird Count motivate people to get…

  7. Naturalistic Observation of Behavior: A Model System Using Mice in a Colony.

    Science.gov (United States)

    Herzog, Harold A., Jr.

    1988-01-01

    Describes exercises designed to give students experience in using methods of naturalistic observation to quantify behavior. Students construct a coding system of the behaviors observed in a small mouse colony, gather data by instantaneous and focal animal sampling, and use the data to calculate interrater reliability and sequence analysis. (GEA)

  8. Designing Library Instruction for Undergraduates: Combining Instructional Systems Design and Naturalistic Inquiry.

    Science.gov (United States)

    Neuman, Delia

    1991-01-01

    The Magazine and Journal Instructional Kit (MAJIK/1) is a HyperCard program delivering basic individualized library instruction. Using a technique derived from naturalistic inquiry, the program's formative evaluation was conducted at the University of Maryland, College Park, with 28 upperclassmen as subjects. They reported little difficulty with…

  9. Czy naturalistyczna etyka jest możliwa? (Is Naturalistic Ethics Possible?

    Directory of Open Access Journals (Sweden)

    Artur Szutta

    2010-12-01

    Full Text Available The paper concerns the possibility of naturalistic ethics. It seems that ethics properly understood must be described as a discipline necessarily focused on evaluation of human action, analyzed in the light of its moral value. Such evaluation, in turn, presupposes an agent who is responsible for his or her actions. The possibility of so understood agent seems not to be possible without agent’s being capable of self-determination in action. According to the naturalistic thesis, however, such freedom is impossible; all human action is causally determined, with no place for ‘sui generis’ causation, and such a thesis must be interpreted as excluding the possibility of responsibility for one’s action. If so, then the concept of naturalistic ethics seems contradictory. Nonetheless, some authors (ex. H. Frankfurt and D. Dennett try to show that the concept of moral responsibility (so crucial to ethics does not necessarily entail freedom understood as ‘sui generis’ causation, and therefore it is compatible with determinism. In this paper I analyze their argumentation with the purpose to assess its conclusiveness. The conclusion I reach is that responsibility postulated by Frankfurt or Dennett is to be understood as merely epiphenomenal, as such it must be treated more like an illusion than a real property of human beings. Therefore, the thesis that naturalistic ethics is a contradictory concept seems to maintain its soundness.

  10. Aggressive, Prosocial, and Nonsocial Behavior in Hyperactive Boys: Dose Effects of Methylphenidate in Naturalistic Settings.

    Science.gov (United States)

    Hinshaw, Stephen P.; And Others

    1989-01-01

    Evaluated impact of methylphenidate on social behavior in 25 boys with attention deficit-hyperactivity disorder (ADHD). Compared children given placebo, low, and moderate dosages of methylphenidate and 15 boys without problems in attention and behavior during naturalistic summer research program. Medication decreased noncompliance and physical and…

  11. Fatigue analyses : from 16 months of naturalistic commercial motor vehicle driving data

    OpenAIRE

    Wiegand, Douglas M.; Hanowski, Richard J.; Olson, Rebecca L. (Rebecca Lynn); Melvin, Whitney

    2008-01-01

    Under the sponsorship of the National Surface Transportation Safety Center for Excellence, an existing naturalistic data set from the Drowsy Driver Warning System Field Operational Test (DDWS FOT) was expanded and analyzed to gain a greater understanding of the conditions which are associated with fatigue in commercial motor vehicle (CMV) driving.

  12. Function and coding in the blowfly H1 neuron during naturalistic optic flow

    NARCIS (Netherlands)

    Hateren, J.H. van; Kern, R.; Schwerdtfeger, G.; Egelhaaf, M.

    2005-01-01

    Naturalistic stimuli, reconstructed from measured eye movements of flying blowflies, were replayed on a panoramic stimulus device. The directional movement-sensitive H1 neuron was recorded from blowflies watching these stimuli. The response of the H1 neuron is dominated by the response to fast sacca

  13. Volunteering with Newcomers: The Perspectives of Canadian- and Foreign-born Volunteers

    OpenAIRE

    Behnam Behnia

    2012-01-01

    Canadian- and foreign-born volunteers have contributed to the settlement of newcomers into Canadian society. Despite their important contribution, little has been reported about the experiences and perspectives of these volunteers. Using the information collected from face-to-face interviews with 60 Canadian- and foreign-born volunteers who support newcomers, this article discusses factors that motivate people to volunteer with newcomers. The study results revealed among other findings that (...

  14. Problems, policies and politics: A comparative case study of contraband tobacco from the 1990s to the present in the Canadian context.

    Science.gov (United States)

    Schwartz, Robert; Johnson, Teela

    2010-09-01

    Contraband tobacco has been and continues to be a global public health policy concern, with special manifestations in Canada. Over the past 20 years, in two noteworthy instances the Canadian government has battled contraband - in the early 1990s, and for much of the past decade. In the 1990s, when contraband cigarettes flooded the Canadian market, the government rapidly responded, using policy measures such as implementing a tobacco export tax and cutting domestic sales tax. Unfortunately, contraband made a strong comeback in recent years, but this time the government has hesitated to act, owing to a change in the source of the contraband. Using John Kingdon's streams theory to frame our arguments, we suggest that lack of congruence between different policy stakeholder groups' perceptions of the problem, policy solutions, and political feasibility has road-blocked the implementation of anti-contraband policy in the 2000s. PMID:20805806

  15. Stocks, Chemistry, and Sensitivity to Climate Change of Dead Organic Matter Along the Canadian Boreal Forest Transect Case Study

    Energy Technology Data Exchange (ETDEWEB)

    Preston, C.M.; Norris, C. [Pacific Forestry Centre, Natural Resources Canada, Victoria, BC, V8Z 1M5 (Canada); Bhatti, J.S. [Northern Forestry Centre, Natural Resources Canada, Edmonton, AB, T6H 3S5 (Canada); Flanagan, L.B. [Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, T1K 3M4 (Canada)

    2006-01-15

    Improving our ability to predict the impact of climate change on the carbon (C) balance of boreal forests requires increased understanding of site-specific factors controlling detrital and soil C accumulation. Jack pine (Pinus banksiana) and black spruce (Picea mariana) stands along the Boreal Forest Transect Case Study (BFTCS) in northern Canada have similar C stocks in aboveground vegetation and large woody detritus, but thick forest floors of poorly-drained black spruce stands have much higher C stocks, comparable to living biomass. Their properties indicate hindered decomposition and N cycling, with high C/N ratios, strongly stratified and depleted d13C and d15N values, high concentrations of tannins and phenolics, and 13C nuclear magnetic resonance (NMR) spectra typical of poorly decomposed plant material, especially roots and mosses. The thinner jack pine forest floor appears to be dominated by lichen, with char in some samples. Differences in quantity and quality of aboveground foliar and woody litter inputs are small and unlikely to account for the contrasts in forest floor accumulation and properties. These are more likely associated with site conditions, especially soil texture and drainage, exacerbated by increases in sphagnum coverage, forest floor depth, and tannins. Small changes in environmental conditions, especially reduced moisture, could trigger large C losses through rapid decomposition of forest floor in poorly drained black spruce stands in this region.

  16. The Association between Health Behaviours and Academic Performance in Canadian Elementary School Students: A Cross-Sectional Study

    Science.gov (United States)

    McIsaac, Jessie-Lee D.; Kirk, Sara F. L.; Kuhle, Stefan

    2015-01-01

    Background: Establishing early healthy eating and physical activity behaviours is critical in supporting children’s long-term health and well-being. The objective of the current paper was to examine the association between health behaviours and academic performance in elementary school students in a school board in Nova Scotia, Canada. Methods: Our population-based study included students in grades 4–6 across 18 schools in a rural school board. Diet and physical activity were assessed through validated instruments. Academic performance measures were obtained from the school board for Mathematics and English Language Arts (ELA). Associations between health behaviours and academic performance were assessed using multilevel logistic regression. Results: Students with unhealthy lifestyle behaviours were more likely to have poor academic performance for both ELA and Mathematics compared to students with healthy lifestyle behaviours; associations were statistically significant for diet quality, physical activity, sugar-sweetened beverage consumption for ELA; and breakfast skipping, not being physically active at morning recess, and not being physically active after school for Mathematics. The effects of diet and physical activity were independent of each other and there was no interaction between the two exposures. Conclusions: Our findings suggest that support for healthy behaviours may help to improve academic outcomes of students. PMID:26610537

  17. A detailed 40Ar/39Ar age study of an Abitibi dike from the Canadian Superior Province

    International Nuclear Information System (INIS)

    40Ar/39Ar step-heating analyses were performed on 11 felsic and mafic mineral separates from a 90m wide Precambrian Shield. Deuterically altered minerals from the dike interior define a primary age of 2150 +- 25 Ma. Updated ages, obtained from felsic separates within 30, and mafic within 1.5 m of the dike border, are evidence of a previously undetected Hudsonian (1.7-1.8 Ga) hydrothermal event in the area. It is possible to distinguish the deuteric from the later hydrothermal alteration by both dating and petrographic methods. The data from this study demonstrate the successful application of 40Ar/39Ar dating to early Proterozoic dikes which have suffered low grade metamorphism. The ages support a north to south sense of motion of the Track 5 apparent polar wander path (APWP). A monotonic decrease in apparent age of felsic spectra indicates reactor induced recoil effects which are correlated with the fine-grained saussurite in the feldspar. (auth)

  18. What information is provided in transcripts and Medical Student Performance Records from Canadian Medical Schools? A retrospective cohort study

    Directory of Open Access Journals (Sweden)

    Jason A. Robins

    2014-09-01

    Full Text Available Background: Resident selection committees must rely on information provided by medical schools in order to evaluate candidates. However, this information varies between institutions, limiting its value in comparing individuals and fairly assessing their quality. This study investigates what is included in candidates’ documentation, the heterogeneity therein, as well as its objective data. Methods: Samples of recent transcripts and Medical Student Performance Records were anonymised prior to evaluation. Data were then extracted by two independent reviewers blinded to the submitting university, assessing for the presence of pre-selected criteria; disagreement was resolved through consensus. The data were subsequently analysed in multiple subgroups. Results: Inter-rater agreement equalled 92%. Inclusion of important criteria varied by school, ranging from 22.2% inclusion to 70.4%; the mean equalled 47.4%. The frequency of specific criteria was highly variable as well. Only 17.7% of schools provided any basis for comparison of academic performance; the majority detailed only status regarding pass or fail, without any further qualification. Conclusions: Considerable heterogeneity exists in the information provided in official medical school documentation, as well as markedly little objective data. Standardization may be necessary in order to facilitate fair comparison of graduates from different institutions. Implementation of objective data may allow more effective intra- and inter-scholastic comparison.

  19. The Association between Health Behaviours and Academic Performance in Canadian Elementary School Students: A Cross-Sectional Study

    Directory of Open Access Journals (Sweden)

    Jessie-Lee D. McIsaac

    2015-11-01

    Full Text Available Background: Establishing early healthy eating and physical activity behaviours is critical in supporting children’s long-term health and well-being. The objective of the current paper was to examine the association between health behaviours and academic performance in elementary school students in a school board in Nova Scotia, Canada. Methods: Our population-based study included students in grades 4–6 across 18 schools in a rural school board. Diet and physical activity were assessed through validated instruments. Academic performance measures were obtained from the school board for Mathematics and English Language Arts (ELA. Associations between health behaviours and academic performance were assessed using multilevel logistic regression. Results: Students with unhealthy lifestyle behaviours were more likely to have poor academic performance for both ELA and Mathematics compared to students with healthy lifestyle behaviours; associations were statistically significant for diet quality, physical activity, sugar-sweetened beverage consumption for ELA; and breakfast skipping, not being physically active at morning recess, and not being physically active after school for Mathematics. The effects of diet and physical activity were independent of each other and there was no interaction between the two exposures. Conclusions: Our findings suggest that support for healthy behaviours may help to improve academic outcomes of students.

  20. Awareness of risk factors among persons at risk for lung cancer, chronic obstructive pulmonary disease and sleep apnea: A Canadian population-based study

    OpenAIRE

    Walker, Shannon L; Saltman, David L.; Rosemary Colucci; Lesli Martin

    2010-01-01

    OBJECTIVE: To assess awareness among persons at risk for lung cancer, chronic obstructive pulmonary disease (COPD) and sleep apnea regarding symptoms and risk factors of the disease, and their attitudes regarding the disease and toward those who are affected.METHODS: A quantitative hybrid telephone and Internet survey of a representative population of Canadian adults at risk for at least one of the three diseases was conducted. To measure the awareness and attitudes of First Nations, Inuit an...

  1. The Cedar Project: high incidence of HCV infections in a longitudinal study of young Aboriginal people who use drugs in two Canadian cities

    Directory of Open Access Journals (Sweden)

    Spittal Patricia M

    2012-08-01

    Full Text Available Abstract Background Factors associated with HCV incidence among young Aboriginal people in Canada are still not well understood. We sought to estimate time to HCV infection and the relative hazard of risk factors associated HCV infection among young Aboriginal people who use injection drugs in two Canadian cities. Methods The Cedar Project is a prospective cohort study involving young Aboriginal people in Vancouver and Prince George, British Columbia, who use illicit drugs. Participants’ venous blood samples were drawn and tested for HCV antibodies. Analysis was restricted to participants who use used injection drugs at enrolment or any of follow up visit. Cox proportional hazards regression was used to identify independent predictors of time to HCV seroconversion. Results In total, 45 out of 148 participants seroconverted over the study period. Incidence of HCV infection was 26.3 per 100 person-years (95% Confidence Interval [CI]: 16.3, 46.1 among participants who reported using injection drugs for two years or less, 14.4 per 100 person-years (95% CI: 7.7, 28.9 among participants who had been using injection drugs for between two and five years, and 5.1 per 100 person-years (95% CI: 2.6,10.9 among participants who had been using injection drugs for over five years. Independent associations with HCV seroconversion were involvement in sex work in the last six months (Adjusted Hazard Ratio (AHR: 1.59; 95% CI: 1.05, 2.42 compared to no involvement, having been using injection drugs for less than two years (AHR: 4.14; 95% CI: 1.91, 8.94 and for between two and five years (AHR: 2.12; 95%CI: 0.94, 4.77 compared to over five years, daily cocaine injection in the last six months (AHR: 2.47; 95% CI: 1.51, 4.05 compared to less than daily, and sharing intravenous needles in the last six months (AHR: 2.56; 95% CI: 1.47, 4.49 compared to not sharing. Conclusions This study contributes to the limited body of research addressing HCV infection among

  2. Canadian Optically-guided approach for Oral Lesions Surgical (COOLS trial: study protocol for a randomized controlled trial

    Directory of Open Access Journals (Sweden)

    Poh Catherine F

    2011-10-01

    Full Text Available Abstract Background Oral cancer is a major health problem worldwide. The 5-year survival rate ranges from 30-60%, and has remained unchanged in the past few decades. This is mainly due to late diagnosis and high recurrence of the disease. Of the patients who receive treatment, up to one third suffer from a recurrence or a second primary tumor. It is apparent that one major cause of disease recurrence is clinically unrecognized field changes which extend beyond the visible tumor boundary. We have previously developed an approach using fluorescence visualization (FV technology to improve the recognition of the field at risk surrounding a visible oral cancer that needs to be removed and preliminary results have shown a significant reduction in recurrence rates. Method/Design This paper describes the study design of a randomized, multi-centre, double blind, controlled surgical trial, the COOLS trial. Nine institutions across Canada will recruit a total of 400 patients with oral severe dysplasia or carcinoma in situ (N = 160 and invasive squamous cell carcinoma (N = 240. Patients will be stratified by participating institution and histology grade and randomized equally into FV-guided surgery (experimental arm or white light-guided surgery (control arm. The primary endpoint is a composite of recurrence at or 1 cm within the previous surgery site with 1 the same or higher grade histology compared to the initial diagnosis (i.e., the diagnosis used for randomization; or 2 further treatment due to the presence of severe dysplasia or higher degree of change at follow-up. This is the first randomized, multi-centre trial to validate the effectiveness of the FV-guided surgery. Discussion In this paper we described the strategies, novelty, and challenges of this unique trial involving a surgical approach guided by the FV technology. The success of the trial requires training, coordination, and quality assurance across multiple sites within Canada. The COOLS

  3. Canadian Optically-guided approach for Oral Lesions Surgical (COOLS) trial: study protocol for a randomized controlled trial

    International Nuclear Information System (INIS)

    Oral cancer is a major health problem worldwide. The 5-year survival rate ranges from 30-60%, and has remained unchanged in the past few decades. This is mainly due to late diagnosis and high recurrence of the disease. Of the patients who receive treatment, up to one third suffer from a recurrence or a second primary tumor. It is apparent that one major cause of disease recurrence is clinically unrecognized field changes which extend beyond the visible tumor boundary. We have previously developed an approach using fluorescence visualization (FV) technology to improve the recognition of the field at risk surrounding a visible oral cancer that needs to be removed and preliminary results have shown a significant reduction in recurrence rates. This paper describes the study design of a randomized, multi-centre, double blind, controlled surgical trial, the COOLS trial. Nine institutions across Canada will recruit a total of 400 patients with oral severe dysplasia or carcinoma in situ (N = 160) and invasive squamous cell carcinoma (N = 240). Patients will be stratified by participating institution and histology grade and randomized equally into FV-guided surgery (experimental arm) or white light-guided surgery (control arm). The primary endpoint is a composite of recurrence at or 1 cm within the previous surgery site with 1) the same or higher grade histology compared to the initial diagnosis (i.e., the diagnosis used for randomization); or 2) further treatment due to the presence of severe dysplasia or higher degree of change at follow-up. This is the first randomized, multi-centre trial to validate the effectiveness of the FV-guided surgery. In this paper we described the strategies, novelty, and challenges of this unique trial involving a surgical approach guided by the FV technology. The success of the trial requires training, coordination, and quality assurance across multiple sites within Canada. The COOLS trial, an example of translational research, may result in

  4. Understanding the Role of the State in Promoting Capitalist Accumulation: A Case Study of the Canadian Seasonal Agricultural Worker Program

    Directory of Open Access Journals (Sweden)

    Joseph Yaw Asomah

    2014-11-01

    Full Text Available There is limited in-depth research focusing on how the state exerts its power and influence through immigration laws, policies and practices in structuring the relations of labour and capital in a manner that reflects capitalist interests. Therefore, the purpose of this paper is to explore the role of the state in fostering capitalist accumulation, using the Seasonal Agricultural Worker Program (SAWP as a case study, and to consider the policy implications of this program. This paper addresses the following questions: What shapes and reproduces labour-capital relations with reference to SAWP? What are the repercussions of these relations, particularly on the international migrant workers? What should be the role of the state and law in transforming these relations? The paper draws on a constellation of insights from neoliberal globalization, segmentation of labour theory, and a conceptual overview of the role of the state in regulating labour-capital relations to illuminate the discussions. This paper helps broaden our current understanding of how the state facilitates capitalist accumulation in the agricultural sector in Canada through immigration policies and practices with reference to the SAWP. The paper therefore makes a contribution to the theoretical debates on the role of the state in the facilitation of capitalist accumulation in agriculture. Il y a peu de recherches approfondies axées sur l'exercice du pouvoir et sur l'influence des lois en matière d'immigration élaborées par l'État, ainsi que sur les politiques et les pratiques de structuration des relations entre les travailleurs et le capital, d'une manière qui reflète les intérêts capitalistes. Par conséquent, l'objectif de ce document est d'explorer le rôle de l'État qui vise à favoriser l'accumulation capitaliste, à l'aide du Programme des travailleurs agricoles saisonniers (PTAS comme une étude de cas, et d'examiner les conséquences de ce programme. Ce document

  5. The Canadian mobile satellite program

    Science.gov (United States)

    Boudreau, P. M.; Breithaupt, R. W.; McNally, J. L.

    The progressions and selection of design features for the Canadian segment of a mobile satellite (MSAT) communications system are traced. The feasibility study for a satellite-based public and government mobile communications service to underserved areas was carried out between 1980-82. The results covered the market demand, commercial viability, user cost-benefit, and spacecraft concepts. A subsequent 2 yr study was initiated to proceed with project definition. A market of 1.1 million users was identified in all of Canada, with MSAT replacing other systems for 50 percent of the market. Operations would be in the 806-890 MHz range. Traffic will be routed through gateway links functioning in the 8/7 GHz SHF band while the mobile units will be connected through an 821-825 MHz up link and an 866-870 MH downlink. New technologies will be needed for a central control station, the gateway stations, and the base stations for the mobile radio service, the mobile user terminals, and data collection platforms.

  6. Canadian perspectives in evaluating transparency

    International Nuclear Information System (INIS)

    The Canadian Nuclear Safety Commission's mission is to regulate the use of nuclear energy and materials to protect the health, safety, and security of Canadians and the environment, as well as to respect Canada's international commitments on the peaceful use of nuclear energy. In 2001, the CNSC established a vision to be one of the best nuclear regulators in the world and established four strategic priorities of effectiveness, transparency, excellence in staff, and efficiency. While fulfilling a very comprehensive mandate, the CNSC operates with a. very clear vision of its clientele - the Canadian people. That commitment guides every employee and every action of the CNSC and ensures a firm commitment to transparency. The presentation will begin with a brief overview of the worldwide context of transparency and transparency measurement, with a look at what lessons can be learned from other organizations and initiatives. It will look broadly at the Canadian context and the government framework that establishes transparency, including the keystone legislation of the Access to Information Act. The presentation will then focus on the Canadian Nuclear Safety Commission. The CNSC is firmly committed to putting additional measures in place to ensure transparency, which is being done concurrently with an overall organisational performance measurement system. It is within this framework that the presentation will address the transparency efforts at the CNSC as well transparency measurement activities. And, finally, the presentation will look at future directions for transparency and its measurement at the CNSC. (author)

  7. The impact of market timing on Canadian and US firms' capital structure

    OpenAIRE

    Xu, Zhaoxia

    2009-01-01

    This paper studies the impact of market timing on Canadian firms' capital structure and makes a comparison with U.S. firms. There is no evidence that market timing affects Canadian firms' capital structure in the same manner as it affects their U.S. counterparts. The effect of past equity issues on Canadian firms' capital structure is transitory. Canadian firms adjust at a faster rate toward the leverage target than U.S. firms. These results challenge the generality of the markettiming theory...

  8. The Impact of Market Timing on Canadian and U.S. Firms' Capital Structure

    OpenAIRE

    Zhaoxia Xu

    2009-01-01

    This paper studies the impact of market timing on Canadian firms' capital structure and makes a comparison with U.S. firms. There is no evidence that market timing affects Canadian firms' capital structure in the same manner as it affects their U.S. counterparts. The effect of past equity issues on Canadian firms' capital structure is transitory. Canadian firms adjust at a faster rate toward the leverage target than U.S. firms. These results challenge the generality of the market-timing theor...

  9. Canadian Food Irradiation Facilities

    International Nuclear Information System (INIS)

    Atomic Energy of Canada Limited (AECL) began work on the irradiation of potatoes in 1956, using spent fuel rods as the radiation source. In 1958 the first Gammacell 220, a self-contained irradiator, was designed and manufactured by AECL, and cobalt-60 was then used exclusively in the food irradiation programme. In 1960 the first food and drug clearance was obtained for potatoes. The next stage was to demonstrate to the potato industry that cobalt-60 was a safe, simple and reliable tool, and that irradiation would inhibit sprouting under field conditions. A mobile irradiator was designed and produced by AECL in 1961 to carry out this pilot-plant programme. The irradiator was mounted on a fully-equipped road trailer and spent the 1961/1962 season irradiating one million pounds of potatoes at various points in Eastern Canada. In 1965 the first commercial food irradiator was designed and built by AECL for Newfield Products, Ltd. Whilst the potato programme was under way, AECL initiated co-operative programmes with Canadian food research laboratories, using additional Gammacells. In 1960, AECL constructed an irradiation facility in a shielded room at its own plant in Ottawa for the irradiation of larger objects, such as sides of pork and stems of bananas. During 1963 the mobile irradiator, already a most useful tool, was made more versatile when its source strength was increased and it was equipped with a product cooling system and van air conditioning. Following these modifications, the unit was employed in California for the irradiation of a wide spectrum of fruits at the United States Department of Agriculture Station in Fresno. The Gammacell, mobile irradiator, shielded-room facility, the commercial food irradiator and some of the main food programmes are described in detail. There is an increasing amount of interest in irradiation by the food industry, and prospects are encouraging for future installations. (author)

  10. The full moon as a synchronizer of circa-monthly biological rhythms: Chronobiologic perspectives based on multidisciplinary naturalistic research.

    Science.gov (United States)

    Reinberg, Alain; Smolensky, Michael H; Touitou, Yvan

    2016-01-01

    Biological rhythmicity is presumed to be an advantageous genetic adaptation of fitness and survival value resulting from evolution of life forms in an environment that varies predictably-in-time during the 24 h, month, and year. The 24 h light/dark cycle is the prime synchronizer of circadian periodicities, and its modulation over the course of the year, in terms of daytime photoperiod length, is a prime synchronizer of circannual periodicities. Circadian and circannual rhythms have been the major research focus of most scientists. Circa-monthly rhythms triggered or synchronized by the 29.5 day lunar cycle of nighttime light intensity, or specifically the light of the full moon, although explored in waterborne and certain other species, have received far less study, perhaps because of associations with ancient mythology and/or an attitude naturalistic studies are of lesser merit than ones that entail molecular mechanisms. In this editorial, we cite our recent discovery through multidisciplinary naturalistic investigation of a highly integrated circadian, circa-monthly, and circannual time structure, synchronized by the natural ambient nyctohemeral, lunar, and annual light cycles, of the Peruvian apple cactus (C. peruvianus) flowering and reproductive processes that occur in close temporal coordination with like rhythms of the honey bee as its pollinator. This finding led us to explore the preservation of this integrated biological time structure, synchronized and/or triggered by environmental light cues and cycles, in the reproduction of other species, including Homo sapiens, and how the artificial light environment of today in which humans reside may be negatively affecting human reproduction efficiency. PMID:27019304

  11. 1H-Magnetic resonance spectroscopy study of stimulant medication effect on brain metabolites in French Canadian children with attention deficit hyperactivity disorder

    Directory of Open Access Journals (Sweden)

    BenAmor L

    2014-01-01

    Full Text Available Leila BenAmor1,21Department of Psychiatry Sainte-Justine Hospital, Montreal, Quebec, Canada; 2Department of Psychiatry, University of Montreal, Montreal, Quebec, CanadaBackground: Attention deficit hyperactivity disorder (ADHD is a common neurodevelopmental disorder in school aged children. Functional abnormalities have been reported in brain imaging studies in ADHD populations. Psychostimulants are considered as the first line treatment for ADHD. However, little is known of the effect of stimulants on brain metabolites in ADHD patients.Objectives: To compare the brain metabolite concentrations in children with ADHD and on stimulants with those of drug naïve children with ADHD, versus typically developed children, in a homogenous genetic sample of French Canadians.Methods: Children with ADHD on stimulants (n=57 and drug naïve children with ADHD (n=45 were recruited, as well as typically developed children (n=38. The presence or absence of ADHD diagnosis (Diagnostic and Statistical Manual of Mental Disorders IV criteria was based on clinical evaluation and The Diagnostic Interview Schedule for Children IV. All children (n=140 underwent a proton magnetic resonance spectroscopy session to measure the ratio of N-acetyl-aspartate, choline, glutamate, and glutamate–glutamine to creatine, respectively, in the left and right prefrontal and striatal regions of the brain, as well as in the left cerebellum.Results: When compared with drug naïve children with ADHD, children with ADHD on stimulants and children typically developed were found to have higher choline ratios in the left prefrontal region (P=0.04 and lower N-acetyl-aspartate ratios in the left striatum region (P=0.01, as well as lower glutamate–glutamine ratios in the left cerebellum (P=0.05. In these three regions, there was no difference between children with ADHD on stimulants and typically developed children.Conclusion: Therapeutic psychostimulant effects in children with ADHD may be

  12. Solar ultraviolet-B radiation and vitamin D: a cross-sectional population-based study using data from the 2007 to 2009 Canadian Health Measures Survey

    Directory of Open Access Journals (Sweden)

    Greenfield Jamie A

    2012-08-01

    Full Text Available Abstract Background Exposure to solar ultraviolet-B (UV-B radiation is a major source of vitamin D3. Chemistry climate models project decreases in ground-level solar erythemal UV over the current century. It is unclear what impact this will have on vitamin D status at the population level. The purpose of this study was to measure the association between ground-level solar UV-B and serum concentrations of 25-hydroxyvitamin D (25(OHD using a secondary analysis of the 2007 to 2009 Canadian Health Measures Survey (CHMS. Methods Blood samples collected from individuals aged 12 to 79 years sampled across Canada were analyzed for 25(OHD (n = 4,398. Solar UV-B irradiance was calculated for the 15 CHMS collection sites using the Tropospheric Ultraviolet and Visible Radiation Model. Multivariable linear regression was used to evaluate the association between 25(OHD and solar UV-B adjusted for other predictors and to explore effect modification. Results Cumulative solar UV-B irradiance averaged over 91 days (91-day UV-B prior to blood draw correlated significantly with 25(OHD. Independent of other predictors, a 1 kJ/m2 increase in 91-day UV-B was associated with a significant 0.5 nmol/L (95% CI 0.3-0.8 increase in mean 25(OHD (P = 0.0001. The relationship was stronger among younger individuals and those spending more time outdoors. Based on current projections of decreases in ground-level solar UV-B, we predict less than a 1 nmol/L decrease in mean 25(OHD for the population. Conclusions In Canada, cumulative exposure to ambient solar UV-B has a small but significant association with 25(OHD concentrations. Public health messages to improve vitamin D status should target safe sun exposure with sunscreen use, and also enhanced dietary and supplemental intake and maintenance of a healthy body weight.

  13. Time to discontinuation of atypical versus typical antipsychotics in the naturalistic treatment of schizophrenia

    Directory of Open Access Journals (Sweden)

    Swartz Marvin

    2006-02-01

    Full Text Available Abstract Background There is an ongoing debate over whether atypical antipsychotics are more effective than typical antipsychotics in the treatment of schizophrenia. This naturalistic study compares atypical and typical antipsychotics on time to all-cause medication discontinuation, a recognized index of medication effectiveness in the treatment of schizophrenia. Methods We used data from a large, 3-year, observational, non-randomized, multisite study of schizophrenia, conducted in the U.S. between 7/1997 and 9/2003. Patients who were initiated on oral atypical antipsychotics (clozapine, olanzapine, risperidone, quetiapine, or ziprasidone or oral typical antipsychotics (low, medium, or high potency were compared on time to all-cause medication discontinuation for 1 year following initiation. Treatment group comparisons were based on treatment episodes using 3 statistical approaches (Kaplan-Meier survival analysis, Cox Proportional Hazards regression model, and propensity score-adjusted bootstrap resampling methods. To further assess the robustness of the findings, sensitivity analyses were performed, including the use of (a only 1 medication episode for each patient, the one with which the patient was treated first, and (b all medication episodes, including those simultaneously initiated on more than 1 antipsychotic. Results Mean time to all-cause medication discontinuation was longer on atypical (N = 1132, 256.3 days compared to typical antipsychotics (N = 534, 197.2 days; p Conclusion In the usual care of schizophrenia patients, time to medication discontinuation for any cause appears significantly longer for atypical than typical antipsychotics regardless of the typical antipsychotic potency level. Findings were primarily driven by clozapine and olanzapine, and to a lesser extent by risperidone. Furthermore, only clozapine and olanzapine therapy showed consistently and significantly longer treatment duration compared to perphenazine, a medium

  14. Incomplete data on the Canadian cohort may have affected the results of the study by the International Agency for Research on Cancer on the radiogenic cancer risk among nuclear industry workers in 15 countries

    Energy Technology Data Exchange (ETDEWEB)

    Ashmore, J Patrick [Ponsonby and Associates, Manotick, ON (Canada); Gentner, Norman E; Osborne, Richard V, E-mail: osborner@magma.c [Ranasara Consultants Inc., PO Box 1116, Deep River, ON (Canada)

    2010-06-15

    In 1995 the International Agency for Research on Cancer (IARC) completed a study that involved nuclear workers from facilities in the USA, UK and Canada. The only significant, though weak, dose-related associations found were for leukaemia and multiple myeloma. The results for the Canadian cohort, which comprised workers from the facilities of Atomic Energy of Canada Limited (AECL), were compatible with those for the other national cohorts. In 2005, IARC completed a further study, involving nuclear workers from 15 countries, including Canada. In these results, the dose-related risk for leukaemia was not significant but the prominent finding was a statistically significant excess relative risk per sievert (ERR Sv{sup -1}) for 'all cancers excluding leukaemia'. Surprisingly, the risk ascribed to the Canadian cohort for all cancers excluding leukaemia, driven by the AECL sub-cohort, was significantly higher than the risk estimate for the 15-country cohort as a whole. We have attempted to identify why the results for the AECL cohort were so discrepant and had such a remarkable influence on the 15-country risk estimate. When considering the issues associated with data on the AECL cohorts and their handling, we noted a striking feature: a major change in outcome of studies that involved Canadian nuclear workers occurred concomitantly with the shift to when data from the National Dose Registry (NDR) of Canada were used directly rather than data from records at AECL. We concluded that an important contributor to the considerable upward shift in apparent risk in the 15-country and other Canadian studies that have been based on the NDR probably relates to pre-1971 data and, in particular, the absence from the NDR of the person-years of workers who had zero doses in the calendar years 1956 to 1970. Our recommendation was for there to be a comprehensive evaluation of the risks from radiation in nuclear industry workers in Canada, organisation by organisation, in

  15. Chernobyl - a Canadian technical perspective

    International Nuclear Information System (INIS)

    In this report we present the design review done to date in Canada by AECL. From the Canadian point of view it covers: 1) relevant information on the Chernobyl design and the accident, both as presented by the Soviets at the Post-Accident Review Meeting (PARM) held in Vienna from August 25-29, 1986, and as deduced from publicly available Soviet documentation; and 2) details of AECL's technical review of the CANDU PHWR (Pressurized Heavy Water Reactor) against the background of the Chernobyl accident, and implications of the Chernobyl accident. Reviews of operational aspects are underway by the Canadian electrical utilities and a review by the Canadian regulatory agency (the Atomic Energy Control Board) is near completion

  16. Responsible Canadian energy progress report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2010-07-01

    The Canadian Association of Petroleum Producers (CAPP) represents oil and gas companies throughout Canada; its members produce over 90% of Canada's natural gas and crude oil output. The aim of the Association is to improve the economics of the Canadian upstream petroleum sector in an environmentally and socially responsible way. The aim of this Responsible Canadian Energy report is to present the performance data of CAPP's members for the year 2009. Data, trends, and performance analyses are provided throughout the document. This analysis makes it possible to determine where progress has been made and where performance improvement is necessary. It also presents success stories and best practices so that other companies can learn from them how to improve their own performance. This paper provides useful information on the performance of the upstream petroleum industry in Canada and highlights where the focus should be for further improvement in its performance.

  17. Recent Changes in Summer Sessions of U.S. and Canadian Colleges and Universities.

    Science.gov (United States)

    Young, Raymond J.; McDougall, William P.

    A study of summer sessions at U.S. and Canadian colleges and universities was conducted in 1985. A stratified random sample of 213 U.S. public and private institutions included research universities, doctoral-granting institutions, and comprehensive colleges and universities; all 10 Canadian institutions were featured in the study. A total of 184…

  18. Pericyazine in the treatment of cannabis dependence in general practice: a naturalistic pilot trial

    Directory of Open Access Journals (Sweden)

    Morley KC

    2012-05-01

    Full Text Available Kirsten C Morley,1 Paul S Haber,1,2 Madeleine L Morgan,3 Fares Samara3,41Discipline of Addiction Medicine, Sydney Medical School, University of Sydney, NSW, Australia; 2Drug Health Services, Royal Prince Alfred Hospital, Camperdown, NSW, Australia; 3Drug and Alcohol Services, North Coast Area Health Service, Kempsey and Port Macquarie, NSW, Australia; 4Durri Aboriginal Medical Service, Kempsey, NSW, AustraliaAbstract: Cannabis is one of the most widely used illicit drugs worldwide. However, while the rates of cannabis dependence and treatment increase, there remains no medications approved for this use. Due to its sedative effects and low abuse liability, the typical antipsychotic pericyazine has been utilized in some parts of Australia for the treatment of cannabis dependence. We aimed to provide documentation of preliminary outcomes and acceptability of pericyazine treatment in a small sample. A naturalistic case series study was conducted in which 21 patients were enrolled for a 4-week course of pericyazine (up to 8 × 2.5 mg tablets daily and weekly medical review. Levels of cannabis use were reported and side effects with electrocardiography and blood tests were monitored. Measures of dependence severity, depression, anxiety, and insomnia were taken at baseline and follow-up utilizing validated psychometric tools. Significant reductions in cannabis use, depression, anxiety, and insomnia severity occurred across time. Pericyazine appeared to be well tolerated and easily administered in the community clinics. The results provide some preliminary evidence that low-dose short-term pericyazine may be an acceptable mode of treatment in this population. Given the open-label nature of the design, we cannot conclude that pharmacotherapy was uniquely responsible for the treatment effect. Nonetheless, low-dose pericyazine may be a potentially effective approach to the treatment of cannabis dependence, and further evaluation via a randomized placebo

  19. The objectivity of the Autism Diagnostic Observation Schedule (ADOS) in naturalistic clinical settings.

    Science.gov (United States)

    Zander, Eric; Willfors, Charlotte; Berggren, Steve; Choque-Olsson, Nora; Coco, Christina; Elmund, Anna; Moretti, Åsa Hedfors; Holm, Anette; Jifält, Ida; Kosieradzki, Renata; Linder, Jenny; Nordin, Viviann; Olafsdottir, Karin; Poltrago, Lina; Bölte, Sven

    2016-07-01

    The Autism Diagnostic Observation Schedule (ADOS) is a first-choice diagnostic tool in autism spectrum disorder (ASD). Excellent interpersonal objectivity (interrater reliability) has been demonstrated for the ADOS under optimal conditions, i.e., within groups of highly trained "research reliable" examiners in research setting. We investigated the spontaneous interrater reliability among clinically trained ADOS users across multiple sites in clinical routine. Forty videotaped administrations of the ADOS modules 1-4 were rated by five different raters each from a pool of in total 15 raters affiliated to 13 different clinical sites. G(q,k) coefficients (analogous to intraclass correlations), kappas (ĸ) and percent agreement (PA) were calculated. The median interrater reliability for items across the four modules was G(q,k) = .74-.83, with the single ADOS items ranging from .23 to .94. G(q,k) for total scores was .85-.92. For diagnostic classification (ASD/non-spectrum), PA was 64-82 % and Fleiss' ĸ .19-.55. Objectivity was lower for pervasive developmental disorder not otherwise specified and non-spectrum diagnoses as compared to autism. Interrater reliabilities of the ADOS items and domain totals among clinical users across multiple sites were in the same range as previously reported for research reliable users, while the one for diagnostic classification was lower. Differences in sample characteristics, rater skills and statistics compared with previous studies are discussed. Findings endorse the objectivity of the ADOS in naturalistic clinical settings, but also pinpoint its limitations and the need and value of adequate and continuous rater training. PMID:26584575

  20. “I didn’t even know what I was looking for”: A qualitative study of the decision-making processes of Canadian medical tourists

    Directory of Open Access Journals (Sweden)

    Johnston Rory

    2012-07-01

    Full Text Available Abstract Background Medical tourism describes the private purchase and arrangement of medical care by patients across international borders. Increasing numbers of medical facilities in countries around the world are marketing their services to a receptive audience of international patients, a phenomenon that has largely been made possible by the growth of the Internet. The growth of the medical tourism industry has raised numerous concerns around patient safety and global health equity. In spite of these concerns, there is a lack of empirical research amongst medical tourism stakeholders. One such gap is a lack of engagement with medical tourists themselves, where there is currently little known about how medical tourists decide to access care abroad. We address this gap through examining aspects of Canadian medical tourists’ decision-making processes. Methods Semi-structured phone interviews were administered to 32 Canadians who had gone abroad as medical tourists. Interviews touched on motivations, assessment of risks, information seeking processes, and experiences at home and abroad. A thematic analysis of the interview transcripts followed. Results Three overarching themes emerged from the interviews: (1 information sources consulted; (2 motivations, considerations, and timing; and (3 personal and professional supports drawn upon. Patient testimonials and word of mouth connections amongst former medical tourists were accessed and relied upon more readily than the advice of family physicians. Neutral, third-party information sources were limited, which resulted in participants also relying on medical tourism facilitators and industry websites. Conclusions While Canadian medical tourists are often thought to be motivated by wait times for surgery, cost and availability of procedures were common primary and secondary motivations for participants, demonstrating that motivations are layered and dynamic. The findings of this analysis offer a

  1. Mutational analyses of Tay-Sachs disease: studies on Tay-Sachs carriers of French Canadian background living in New England.

    OpenAIRE

    Triggs-Raine, B; Richard, M.; Wasel, N; Prence, E M; Natowicz, M R

    1995-01-01

    Tay-Sachs disease (TSD) results from mutations in HEXA that cause Hex A deficiency. Heterozygote-screening programs have been applied in groups with an increased TSD incidence, such as Ashkenazi Jews and French Canadians in Quebec. These programs are complicated by benign mutations that cause apparent Hex A deficiency but not TSD. Benign mutations account for only approximately 2% of Jewish and approximately 36% of non-Jewish enzyme-defined carriers. A carrier frequency of 1/53 (n = 1,434) wa...

  2. 2007: A Canadian Corporate Ownership Survey

    Directory of Open Access Journals (Sweden)

    Valsan, Calin

    2010-12-01

    Full Text Available This study documents a decline in the levels of corporate ownership concentration between 1996 and 2007. When compared to previous studies, the incidence of ownership stakes of 20% or larger has decreased form 60% to 41% of the total population of publicly listed Canadian firms. Regional disparities among provinces remain important. Ontario, Alberta, and British Columbia have the most widely-held firms, while Quebec and Atlantic Canada show the most concentrated corporate ownership patterns. The interpretation of these results requires a complex understanding of historical, demographic, cultural, political and institutional factors.

  3. The turning black tide : energy prices and the Canadian dollar

    International Nuclear Information System (INIS)

    This paper examined the relationship between energy prices and the Canadian-United States dollar real exchange rate. The researchers evaluated the standard Amano-van Norden (AvN) equation formulated to demonstrate that higher real energy prices lead to a depreciation of the Canadian dollar. Major developments in the Canadian energy market were discussed, as well as policy initiatives designed to address Canada's trade balance by increasing energy exports. The study examined the AvN equation using Monte Carlo experiments to determine the parameter stability of the equation. Results indicated that the co-integrating relationship in the standard AvN equation were no longer supported. Structural break tests were used to demonstrate that major changes in Canada's energy policies and cross-border trade and investment strategies have led to an increase in the Canadian dollar's value when energy prices are high. The study presented a new equation designed to account for Canadian dollar's appreciation since 2003. It was concluded that net energy exports in the 1990s outweighed the negatives associated with Canada's energy-intensive production processes. 39 refs., 6 tabs., 10 figs

  4. Severe accident considerations in Canadian nuclear power reactors

    International Nuclear Information System (INIS)

    This paper describes a current study on severe accidents being sponsored by the Atomic Energy Control Board (AECB) and provides background on other related Canadian work. Scoping calculations are performed in Phase I of the AECB study to establish the relative consequences of several permutations resulting from six postulated initiating events, nine containment states, and a selection of meteorological conditions and health effects mitigating criteria. In Phase II of the study, selected accidents sequences would be analyzed in detail using models suitable for the design features of the Canadian nuclear power reactors

  5. Canadian Government Electronic Information Policy.

    Science.gov (United States)

    Nilsen, Kirsti

    1993-01-01

    Examines development and evolution of Canadian government information policy in response to issues of preservation of data, information industry involvement in government data development and marketing, role of Crown copyright, and public access to government information in electronic formats. Six key information policy instruments are also…

  6. Nuclear regulation - the Canadian approach

    International Nuclear Information System (INIS)

    Although the Atomic Energy Control Board was established 35 years ago the basic philosophy of nuclear regulation in Canada and the underlying principles of the regulatory process remain essentially unchanged. This paper outlines the Canadian approach to nuclear regulation and explains in practical terms how the principles of regulation are applied. (author)

  7. Land cover mapping, fire regeneration, and scaling studies in the Canadian boreal forest with 1 km AVHRR and Landsat TM data

    Science.gov (United States)

    Steyaert, L. T.; Hall, F. G.; Loveland, T. R.

    1997-12-01

    A multitemporal 1 km advanced very high resolution radiometer (AVHRR) land cover analysis approach was used as the basis for regional land cover mapping, fire disturbance-regeneration, and multiresolution land cover scaling studies in the boreal forest ecosystem of central Canada. The land cover classification was developed by using regional field observations from ground and low-level aircraft transits to analyze spectral-temporal clusters that were derived from an unsupervised cluster analysis of monthly normalized difference vegetation index (NDVI) image composites (April-September 1992). Quantitative areal proportions of the major boreal forest components were determined for a 821 km × 619 km region, ranging from the southern grasslands-boreal forest ecotone to the northern boreal transitional forest. The boreal wetlands (mostly lowland black spruce, tamarack, mosses, fens, and bogs) occupied approximately 33% of the region, while lakes accounted for another 13%. Upland mixed coniferous-deciduous forests represented 23% of the ecosystem. A SW-NE productivity gradient across the region is manifested by three levels of tree stand density for both the boreal wetland conifer and the mixed forest classes, which are generally aligned with isopleths of regional growing degree days. Approximately 30% of the region was directly affected by fire disturbance within the preceding 30-35 years, especially in the Canadian Shield Zone where large fire-regeneration patterns contribute to the heterogeneous boreal landscape. Intercomparisons with land cover classifications derived from 30-m Landsat Thematic Mapper (TM) data provided important insights into the relative accuracy of the 1 km AVHRR land cover classification. Primarily due to the multitemporal NDVI image compositing process, the 1 km AVHRR land cover classes have an effective spatial resolution in the 3-4 km range; therefore fens, bogs, small water bodies, and small patches of dry jack pine cannot be resolved within

  8. Inclusive Education Policy: What the Leadership of Canadian Teacher Associations Has to Say about It

    Science.gov (United States)

    Thompson, S. Anthony; Lyons, Wanda; Timmons, Vianne

    2015-01-01

    In inclusive education research, rarely are teacher associations a topic of investigation despite their critical role in its implementation and efficacy. A study was conducted as part of the Canadian Disability Policy Alliance using a "learning collaborative" methodology that explored the extent to which Canadian provincial/territorial…

  9. On the Integration of Computer Algebra Systems (CAS) by Canadian Mathematicians: Results of a National Survey

    Science.gov (United States)

    Buteau, Chantal; Jarvis, Daniel H.; Lavicza, Zsolt

    2014-01-01

    In this article, we outline the findings of a Canadian survey study (N = 302) that focused on the extent of computer algebra systems (CAS)-based technology use in postsecondary mathematics instruction. Results suggest that a considerable number of Canadian mathematicians use CAS in research and teaching. CAS use in research was found to be the…

  10. Rethinking International Migration of Human Capital and Brain Circulation: The Case of Chinese-Canadian Academics

    Science.gov (United States)

    Blachford, Dongyan Ru; Zhang, Bailing

    2014-01-01

    This article examines the dynamics of brain circulation through a historical review of the debates over international migration of human capital and a case study on Chinese-Canadian academics. Interviews with 22 Chinese-Canadian professors who originally came from China provide rich data regarding the possibilities and problems of the contemporary…

  11. Internationalizing Canadian Colleges and Institutes: The First National Report on International Education and Mobility

    Science.gov (United States)

    Association of Canadian Community Colleges, 2010

    2010-01-01

    In 2009, the Association of Canadian Community Colleges (ACCC), with the support of Human Resources and Skills Development Canada (HRSDC) and the Department of Foreign Affairs and International Trade (DFAIT), launched the first national survey on international education and mobility at Canadian colleges. This will act as a baseline study, allowing…

  12. Trends in Canadian Newspaper Coverage of Gay-Straight Alliances, 2000-2009

    Science.gov (United States)

    Herriot, Lindsay

    2011-01-01

    Gay-straight alliances (GSAs) in Canadian public schools have gained considerable attention from print media since reports first surfaced in the year 2000. This study tracked and analyzed Canadian newspaper reporting about GSA creation. It summarized the shift in public opinion toward lesbian, gay, bisexual, transgender, and queer (LGBTQ) youth…

  13. Imagining the Antiracist State: Representations of Racism in Canadian History Textbooks

    Science.gov (United States)

    Montgomery, Ken

    2005-01-01

    This paper examines how knowledge about racism has been represented in high school Canadian history textbooks authorized by the Province of Ontario during the 1960s and after the year 2000. I argue that even though historical racisms have increasingly made their way into Canadian history textbooks as valid and important topics of study, the idea…

  14. Educational Attainment and the Gender Wage Gap: Evidence from the 1986 and 1991 Canadian Censuses.

    Science.gov (United States)

    Christie, Pamela; Shannon, Michael

    2001-01-01

    Uses Canadian census data to examine effects of gender differences in educational attainment on the gender earnings gap for full-time, full-year Canadian workers. These educational attainment differences account for virtually none of the gender earnings gap in 1985 and 1990. Gender differences in field of study matter somewhat more. (Contains 17…

  15. Professional Fulfillment and Satisfaction of US and Canadian Adult Education and Human Resource Development Faculty

    Science.gov (United States)

    Peterson, Shari L.; Wiesenberg, Faye

    2004-01-01

    This comparative study explored the professional fulfillment and job satisfaction of US and Canadian college and university faculty in the fields of Adult Education and Human Resource Development. In Autumn 2001, we disseminated electronically "The Adult Education and Human Resource Development Faculty Survey" to a selected sample of Canadian and…

  16. Challenges Facing Canadian Federal Offenders Newly Released to the Community: A Concept Map

    Science.gov (United States)

    Brown, Jason D.

    2004-01-01

    The purpose of the study was to describe the needs of newly released Canadian federal offenders as perceived by community parole supervisors. Seventy-four Canadian parole supervisors were asked to answer the following question: "What challenges do parolees face in the first 90 days after release?" The data were analyzed using multidimensional…

  17. Naturalistic fMRI mapping reveals superior temporal sulcus as the hub for the distributed brain network for social perception

    OpenAIRE

    Juha Marko Lahnakoski; Enrico eGlerean; Juha eSalmi; Jääskeläinen, Iiro P.; Mikko eSams; Riitta eHari; Lauri eNummenmaa

    2012-01-01

    Despite the abundant data on brain networks processing static social signals, such as pictures of faces, the neural systems supporting social perception in naturalistic conditions are still poorly understood. Here we delineated brain networks subserving social perception under naturalistic conditions in 19 healthy humans who watched, during 3-T functional magnetic resonance imaging (fMRI), a set of 137 short (approximately 16 s each, total 27 min) audiovisual movie clips depicting pre-selecte...

  18. Internationalization at Canadian Universities: Where are we Now?

    Directory of Open Access Journals (Sweden)

    Linda Weber

    2007-07-01

    Full Text Available Internationalization is powerfully impacting the missions, planning documents, and learning environments of Canadian universities. Internationalization within Canadian universities is viewed from a local as well as global context. Accounts of the composition of domestic students studying abroad and international students studying in Canada, and the implications of these statistics, are related. Emphasis is given to a discussion of the contribution that economic factors play in internationalization decisions. Economic factors have undeniably shaped the face of internationalization at Canadian universities. Complexities of the relationship between global context and educational goals are outlined and educators are challenged to responsibly interpret and implement university changes resulting from internationalization while prioritizing the learning needs of students.

  19. Canadian Universities 1980 and Beyond. Enrolment, Structural Change and Finance.

    Science.gov (United States)

    Leslie, Peter M.

    Various financing alternatives and their impact on Canadian university excellence were studied, in order to recommend a position representative of the Association of Universities and Colleges of Canada (AUCC). The following were considered: (1) the results of the other studies undertaken by the AUCC and previous study reports on university…

  20. Institutions, Markets and Economic Evolution - Conceptual Basis for a Naturalist Institutionalism

    OpenAIRE

    Bateira, Jorge

    2010-01-01

    The University of ManchesterJorge Manuel de Meneses BateiraDoctor of Philosophy (PhD), 2010Institutions, Markets and Economic Evolution - Conceptual Basis for a Naturalist InstitutionalismWe might wonder, after two centuries of economic science and thousands of articles and books written by economists, if something new can still be said about ‘markets’. Today, what new contribution could still be given to a so fundamental concept in economics? This thesis builds on the main legacy of Veblen, ...

  1. The naturalistic turn in economics: implications for the theory of finance

    OpenAIRE

    Herrmann-Pillath, Carsten

    2008-01-01

    Economics is increasingly adopting the methodological standards and procedures of the natural sciences. The paper analyzes this 'naturalistic turn' from the philosophical perspective on naturalism, and I discuss the implications for the field of finance. The theory of finance is an interesting case in point for the methodological issues, as it manifests a paradigmatic tension between the pure theory of finance and Behavioral Finance. I distinguish between three kinds of naturalism: mark I, th...

  2. Estimates of Prevalence and Risk Associated with Inattention and Distraction Based Upon In Situ Naturalistic Data

    OpenAIRE

    Dingus, Thomas A.

    2014-01-01

    By using in situ naturalistic driving data, estimates of prevalence and risk can be made regarding driver populations’ secondary task distractions and crash rates. Through metadata analysis, three populations of drivers (i.e., adult light vehicle, teenaged light vehicle, and adult heavy vehicle) were compared regarding frequency of secondary task behavior and the associated risk for safety-critical incidents. Relative risk estimates provide insight into the risk associated with engaging in a ...

  3. Processing empty categories in a second language: When naturalistic exposure fills the (intermediate) gap

    OpenAIRE

    Pliatsikas , Christos; Marinis, Theodoros

    2013-01-01

    An ongoing debate on second language (L2) processing revolves around whether or not L2 learners process syntactic information similarly to monolinguals (L1), and what factors lead to a native-like processing. According to the Shallow Structure Hypothesis (Clahsen & Felser, 2006a), L2 learners’ processing does not include abstract syntactic features, such as intermediate gaps of wh-movement, but relies more on lexical/semantic information. Other researchers have suggested that naturalistic L2 ...

  4. Career Success and Its Predictors: Comparing between Canadian and Chinese

    Directory of Open Access Journals (Sweden)

    Chen Yu

    2012-07-01

    Full Text Available Purpose–The purpose of this study was to investigate the difference between Canadian and Chinese about careersuccess, and what are predictors of career in their eyes.Design/Methodology–A sample of 121 employees in Canada and China is surveyed. Data analyses are used totest the hypotheses. Career success was measured by subjective, that is career satisfaction.Findings–1 Career success can be measured by subjective feeling. 2 There are significant difference in careersuccess between Canadian and Chinese. 3 There were three main predictors of career success, which wereeducation, personality and perception of organizational support.Implications–Knowledge of the different attitude on the predictors of career success between Canadian andChinese should provide certain advantages to understand the culture of the two countries.Originality/Value–This paper makes a valuable contribution to the career success literatures by investigatingkinds of predictors of career success.

  5. A Blended Approach to Canadian First Nations Education

    Science.gov (United States)

    Sacher, Martin; Sacher, Mavis; Vaughan, Norman

    2014-01-01

    The purpose of this research study was to investigate if and how a blended approach to Canadian First Nations education could be used to foster student engagement and success. The study examined the SCcyber E-Learning Community program (2012) through the lens of the "Seven Principles of Effective Teaching" (Chickering & Gamson,…

  6. Canadian Orange Juice Imports and Production Level Import Demand

    OpenAIRE

    Liu, Yan; Kilmer, Richard L.; Lee, Jonq-Ying

    2007-01-01

    Import demand equations are estimated in order to identify the own-, cross-price, and volume elasticities that can be used to determine the best marketing strategy to increase U.S. orange juice gallons in the Canadian import market. This study uses the firm’s version of production differential, AIDS, CBS, and NBR models. An expansion of total Canadian orange juice import gallons using advertising favors the U.S. much more than it does the other three origins investigated— Brazil, Mexico, ...

  7. Defining Canadian Perspectives on Climate Change Science and Solutions

    Science.gov (United States)

    Rieger, C.; Byrne, J. M.

    2014-12-01

    Despite the overwhelming scientific evidence of potentially disastrous change in global climate, little is being accomplished in climate mitigation or adaptation in Canada. The energy sector in Canada is still primarily oil and gas, with huge tax breaks to the industry in spite of well known harmful regional and global impacts of fossil fuel pollution. One of the largest concerns for the climate science community is the variable and often complacent attitude many Canadians share on the issue of climate change. The objective herein is twofold: (1) a survey tool will be used to assess the views and opinions of Canadians on climate change science and solutions; (2) develop better communication methods for industry, government and NGOs to share the science and solutions with the public. The study results will inform the Canadian public, policy makers and industry of practical, effective changes needed to address climate change challenges. A survey of Canadians' perspectives is an important step in policy changing research. The climate research and application community must know the most effective ways to communicate the science and solutions with a public that is often resistant to change. The AGU presentation will feature the results of the survey, while continued work into 2015 will be towards advancing communication. This study is both timely and crucial for science communicators in understanding how Canadians view climate change, considering, for example, devastatingly extreme weather being experienced of late and its effect on the economy. The results will assist in recognizing how to encourage Canadians to work towards a more sustainable and resilient energy sector in Canada and abroad.

  8. Assessing the association of the HNF1A G319S variant with C-reactive protein in Aboriginal Canadians: a population-based epidemiological study

    Directory of Open Access Journals (Sweden)

    Ley Sylvia H

    2010-08-01

    Full Text Available Abstract Background C-reactive protein (CRP, a biomarker of inflammation, has been associated with increased risk of developing cardiovascular disease. Common variants of the hepatocyte nuclear factor 1A (HNF1A gene encoding HNF-1α have been associated with plasma CRP in predominantly European Caucasian samples. HNF1A might therefore have an impact on vascular disease and diabetes risk that is mediated by CRP. In an Aboriginal Canadian population, a private polymorphism, HNF1A G319S, was associated with increased prevalence of type 2 diabetes. However, it has not been investigated whether this association is mediated by CRP. We aimed to investigate whether CRP was mediating the association between HNF1A G319S and type 2 diabetes in an Aboriginal Canadian population with a high prevalence of diabetes. Methods A total of 718 individuals who participated in a diabetes prevalence and risk factor survey were included in the current analysis. Participants were genotyped for HNF1A G319S. Fasting plasma samples were analyzed for CRP. Fasting plasma glucose and a 75-g oral glucose tolerance test were obtained to determine type 2 diabetes. Results The prevalence rate of type 2 diabetes was 17.4% (125/718 using the 1999 World Health Organization definition and was higher among S319 allele carriers compared to G/G homozygotes (p Conclusions CRP levels were lower in S319 allele carriers of the HNF1A gene compared to non-carriers among individuals without diabetes, but this difference was not present among those with diabetes, who uniformly had elevated CRP levels. Therefore, while HNF1A appears to influence CRP concentrations in the non-diabetic state, chronic elevation of CRP is unlikely mediating the association between the HNF1A polymorphism and the high prevalence of type 2 diabetes in this Aboriginal population.

  9. Supplying synthetic crude oil from Canadian oil sands: A comparative study of the costs and CO2 emissions of mining and in-situ recovery

    International Nuclear Information System (INIS)

    High crude oil prices and the eventual decline of conventional oil production raise the issue of alternative fuels such as non-conventional oil. The paper describes a simple probabilistic model of the costs of synthetic crude oil produced from Canadian oil sands. Synthetic crude oil is obtained by upgrading bitumen that is first produced through mining or in-situ recovery techniques. This forward-looking analysis quantifies the effects of learning and production constraints on the costs of supplying synthetic crude oil. The sensitivity analysis shows that before 2035, the most influential parameters are the learning parameter in the case of in-situ bitumen and the depletion parameter in the case of mined bitumen. After 2035, depletion dominates in both cases. The results show that the social cost of CO2 has a large impact on the total costs of synthetic crude oil, in particular in the case of synthetic crude oil from in-situ bitumen, due to the carbon intensity of the recovery techniques: taking into account the social cost of CO2 adds more than half to the cost of producing synthetic crude oil from mined bitumen in 2050 (mean value), while the cost of producing synthetic crude oil from in-situ bitumen more than doubles. - Highlights: • We model the cost of Canadian synthetic crude oil (SCO) using Monte-Carlo techniques. • We reveal the uncertainty associated with each input parameter. • We quantify the effect of learning, depletion and CO2 using sensitivity analyses. • Accounting for the social cost of CO2 doubles the cost of SCO from in-situ bitumen. • CO2 pricing could have a large effect on the economics of the oil sands

  10. The transformation of frequency distributions of winter precipitation to spring streamflow probabilities in cold regions; case studies from the Canadian Prairies

    Science.gov (United States)

    Shook, Kevin; Pomeroy, John; van der Kamp, Garth

    2015-02-01

    Hydrological processes alter the states and/or locations of water, and so they can be regarded as being transformations of the properties of the time series of input variables to those of output variables, such as the transformation of precipitation to streamflow. Semi-arid cold regions such as the Canadian Prairies have extremely low annual streamflow efficiencies because of high infiltration rates, large surface water storage capacities, high evaporation rates and strong climate seasonality. As a result snowfall produces the majority of streamflow. It is demonstrated that the probability distributions of Prairie spring streamflows are controlled by three frequency transformations. The first is the transformation of snowfall by wind redistribution and ablation over the winter to form the spring snowpack. The second transformation is the melt of the spring snowpack to produce runoff over frozen agricultural soils. The third is the transformation of runoff to streamflow by the filling and spilling of depressional storage by connecting fields, ponds, wetlands and lakes. Each transformation of the PDF of the input variable to that of the output variable is demonstrated at a number of locations in the Canadian Prairies and is explained in terms of the hydrological processes causing the transformation. The resulting distributions are highly modified from that of precipitation, and the modification depends on which processes dominate streamflow formation in each basin. The results demonstrate the need to consider the effect of the interplay among hydrological processes, climate and basin characteristics in transforming precipitation frequency distributions into those of streamflow for the design of infrastructure and for water management.

  11. The Lived Experiences of Canadian-Born and Foreign-Born Chinese Canadian Post-Secondary Students in Northern Ontario

    Science.gov (United States)

    Wang, Fei

    2016-01-01

    This phenomenological study provided an in-depth description of the internal meaning of the lived experiences of Canadian-born and foreign-born Chinese students in Canada and uncovered the differences in their social experiences. The study used semi-structured interviews to allow the participants to express their views on their lives in Northern…

  12. The prospects for Canadian uranium

    International Nuclear Information System (INIS)

    The 1980s have seen a decline in markets for uranium concentrate, largely as a result of falling estimates for reactor fuel requirements and rising inventories. Spot market prices fell to $44 in September 1982, but have since risen back to $60. World production also fell in 1982 and is not expected to increase significantly before 1990. Some opportunities exist for Canadian producers with new low-cost deposits to replace high-cost producers in Canada and other countries, particularly the United States. There will be strong competition between Canadian producers as well as from Australia. Australia's reserves are somewhat larger than Canada's, although the reported ore grades tend to be lower than those of Saskatchewan

  13. The Canadian safeguards support program

    International Nuclear Information System (INIS)

    Canada supports international safeguards as a means by which the proliferation of nuclear weapons can be discouraged. Canada recognizes that,to meet that the IAEA must have effective safeguards techniques and the active cooperation of Member States. Therefore the Canadian Government decided in 1976 to initiate a program in support of IAEA safeguards, known as the Canadian Safeguards Support Program (CSSP). The CSSP is funded and administered by the Atomic Energy Control Board (AECB). The CSSP is a co-ordinated program for the development and the application of safeguards instruments and techniques for nuclear facilities and materials on behalf of the IAEA and also in support of Canada's own national nuclear material safeguards system, implemented by the AECB. (author)

  14. Exporting the Canadian licensing program

    International Nuclear Information System (INIS)

    This paper deals with the problems of an overseas regulatory agency in licensing a Canadian-supplied nuclear plant which is referenced to a plant in Canada. Firstly, the general problems associated with the use of a reference plant are discussed. This is followed by a discussion of specific problems which arise from the licensing practices in Canada. The paper concludes with recommendations to simplify the task of demonstrating the licensability of an overseas CANDU plant

  15. Canadian wind energy industry directory

    International Nuclear Information System (INIS)

    The companies and organizations involved, either directly or indirectly, in the wind energy industry in Canada, are listed in this directory. Some U.S. and international companies which are active or interested in Canadian industry activities are also listed. The first section of the directory is an alphabetical listing which includes corporate descriptions, company logos, addresses, phone and fax numbers, e-mail addresses and contact names. The second section contains 54 categories of products and services associated with the industry

  16. Canadian Content in Video Games

    OpenAIRE

    Paul, Leonard

    2005-01-01

    THEME: Internationalism: Worlds at Play Topics: Internationalism, Identity in Gaming and Learning to Play Abstract: How does Canada fit into the global cultural context of video games? This paper investigates the culture being reflected in video games being produced in Canada as Canada is one of the world's leading producers of video games. It examines the how Canadian culture is represented in current new media artistic output against the culture, or lack of culture, being represented in vid...

  17. Canadian experience with uranium tailings disposal

    International Nuclear Information System (INIS)

    During the first years of uranium production in Canada uranium tailings were discharged directly into valleys or lakes near the mill. Treatment with barium chloride to precipitate radium began in 1965 at the Nordic Mine at Elliot Lake, Ontario. In the mid-60s and early 70s water quality studies indicated that discharges from uranium tailings areas were causing degradation to the upper part of the Serpent River water system. Studies into acid generation, revegetation, and leaching of radium were initiated by the mining companies and resulted in the construction of treatment plants at a number of sites. Abandoned tailings sites were revegetated. At hearings into the expansion of the Elliot Lake operations the issue of tailings management was a major item for discussion. As a result federal and provincial agencies developed guidelines for the siting and development of urnaium tailings areas prior to issuing operating licences. Western Canadian uranium producers do not have the acid generation problem of the Elliot Lake operations. The Rabbit Lake mill uses settling ponds followed by filtration. High-grade tailings from Cluff Lake are sealed in concrete and buried. Uranium producers feel that the interim criteria developed by the Atomic Energy Control Board, if adopted, would have a harmful effect on the viability of the Canadian uranium industry

  18. Providing cleaner air to Canadians

    International Nuclear Information System (INIS)

    This booklet is designed to explain salient aspects of the Ozone Annex, negotiated and signed recently by Canada and the United States, in a joint effort to improve air quality in North America. By significantly reducing the transboundary flows of air pollutants that cause smog, the Ozone Annex will benefit some 16 million people in central and eastern Canada and provide an example for a future round of negotiations to address concerns of the millions of Canadians and Americans who live in the border area between British Columbia and Washington State. The brochure provide summaries of the Canadian and American commitments, focusing on transportation, monitoring and reporting. The Ozone Annex complements other air quality initiatives by the Government of Canada enacted under the Environmental Protection Act, 1999. These measures include regulations to reduce sulphur content to 30 parts per million by Jan 1, 2005; proposing to restrict toxic particulate matter (PM) to less than 10 microns; establishing daily smog forecasts in the Maritimes and committing to a national program built upon existing smog advisories and forecasts in Quebec, Ontario and British Columbia; and investing in more clean air research through the newly created Canadian Foundation for Climate and Atmospheric Sciences

  19. Canadian fusion fuels technology project

    International Nuclear Information System (INIS)

    The Canadian Fusion Fuels Technology Project was launched in 1982 to coordinate Canada's provision of fusion fuels technology to international fusion power development programs. The project has a mandate to extend and adapt existing Canadian tritium technologies for use in international fusion power development programs. 1985-86 represents the fourth year of the first five-year term of the Canadian Fusion Fuels Technology Project (CFFTP). This reporting period coincides with an increasing trend in global fusion R and D to direct more effort towards the management of tritium. This has resulted in an increased linking of CFFTP activities and objectives with those of facilities abroad. In this way there has been a continuing achievement resulting from CFFTP efforts to have cooperative R and D and service activities with organizations abroad. All of this is aided by the cooperative international atmosphere within the fusion community. This report summarizes our past year and provides some highlights of the upcoming year 1986/87, which is the final year of the first five-year phase of the program. AECL (representing the Federal Government), the Ministry of Energy (representing Ontario) and Ontario Hydro, have given formal indication of their intent to continue with a second five-year program. Plans for the second phase will continue to emphasize tritium technology and remote handling

  20. Conference summaries. Canadian Nuclear Association 29. annual conference; Canadian Nuclear Society 10. annual conference

    International Nuclear Information System (INIS)

    Separate abstracts were prepared for 15 papers from the twenty-ninth Annual Conference of the Canadian Nuclear Association. Abstracts were also prepared for the 102 papers from the tenth Annual Conference of the Canadian Nuclear Society