WorldWideScience

Sample records for 12-hour night shifts

  1. Effects of long working hours and the night shift on severe sleepiness among workers with 12-hour shift systems for 5 to 7 consecutive days in the automobile factories of Korea.

    Science.gov (United States)

    Son, Mia; Kong, Jeong-Ok; Koh, Sang-Baek; Kim, Jaeyoung; Härmä, Mikko

    2008-12-01

    We investigated the effects of 12-hour shift work for five to seven consecutive days and overtime on the prevalence of severe sleepiness in the automobile industry in Korea. [Correction added after online publication 28 Nov: Opening sentence of the summary has been rephrased for better clarity.] A total of 288 randomly selected male workers from two automobile factories were selected and investigated using questionnaires and sleep-wake diaries in South Korea. The prevalence of severe sleepiness at work [i.e. Karolinska Sleepiness Scale (KSS) score of 7 or higher] was modeled using marginal logistic regression and included theoretical risk factors related to working hours and potential confounding factors related to socio-economic status, work demands, and health behaviors. Factors related to working hours increased the risk for severe sleepiness at the end of the shift in the following order: the night shift [odds ratio (OR): 4.7; 95% confidence interval (CI): 3.6-6.0)], daily overtime (OR: 2.2; 95% CI: 1.7-2.9), weekly overtime (OR: 1.6; 95% CI: 1.0-2.6), and night overtime (OR: 1.6; 95% CI: 0.8-3.0). Long working hours and shift work had a significant interactive effect for severe sleepiness at work. Night shift workers who worked for 12 h or more a day were exposed to a risk of severe sleepiness that was 7.5 times greater than day shift workers who worked less than 11 h. Night shifts and long working hours were the main risk factors for severe sleepiness among automobile factory workers in Korea. Night shifts and long working hours have a high degree of interactive effects resulting in severe sleepiness at work, which highlight the need for immediate measures to address these characteristics among South Korean labor force patterns. PMID:19021859

  2. Comparative study of alertness and performance on 8-hour and 12-hour evening and night shifts for nuclear power plant operators

    International Nuclear Information System (INIS)

    Twenty males aged 25-40 years, many with extensive shiftwork and/or power plant operations experience, volunteered for a laboratory study to compare 8-hour and 12-hour shift schedules. Experiments were conducted in workplace simulation laboratories of the Human Alertness Research Center (HARC) at the Institute for Circadian Physiology in Boston, MA. This unique facility includes a simulated control room with process control simulator, control panels, and self-contained residential apartments where subjects sleep and spend off-duty hours. The design of the study is described. Subjects learn the operation of the process control simulator in multiple practice sessions prior to the experiment. They also practice computer-based performance tests, learn work shift protocols and assignments, and procedures for keeping subjective rating scales for alertness, mood and performance. By the time the first experimental shift begins, all subjects are prepared to perform their simulated work shift duties. These duties include monitoring of four video display terminals for silent (visual cues only) and auditory (visual and auditory) alarms, acknowledging the alarms with computer controls, and keeping log records of alarm activity. The process control simulator simultaneously keeps records of subject performance of these tasks by recording storing all times of alarm activity and alarm acknowledgement by the subject

  3. Review of 12-hour shifts at nuclear generating stations

    International Nuclear Information System (INIS)

    This project reviewed the practice of 12-hour shift work schedules at nuclear power plants, and its relationship to safety. The current literature was examined for information on accidents, fatigue and personal preferences. Interviews with operators and maintainers showed that these groups had attitude and preference differences related to both 12 hour shift schedules and overtime work opportunities. Several factors related to 12-hour schedules were identified which could affect safety, but which have not been adequately considered. (24 refs.)

  4. Alertness, performance and off-duty sleep on 8-hour and 12-hour night shifts in a simulated continuous operations control room setting

    International Nuclear Information System (INIS)

    A growing number of nuclear power plants in the United States have adopted routine 12-hr shift schedules. Because of the potential impact that extended work shifts could have on safe and efficient power plant operation, the U.S. Nuclear Regulatory Commission funded research on 8-hr and 12-hr shifts at the Human Alertness Research Center (HARC) in Boston, Massachusetts. This report describes the research undertaken: a study of simulated 8-hr and 12-hr work shifts that compares alertness, speed, and accuracy at responding to simulator alarms, and relative cognitive performance, self-rated mood and vigor, and sleep-wake patterns of 8-hr versus 12-hr shift workers

  5. Alertness, performance and off-duty sleep on 8-hour and 12-hour night shifts in a simulated continuous operations control room setting

    Energy Technology Data Exchange (ETDEWEB)

    Baker, T.L. [Institute for Circadian Physiology, Boston, MA (United States)

    1995-04-01

    A growing number of nuclear power plants in the United States have adopted routine 12-hr shift schedules. Because of the potential impact that extended work shifts could have on safe and efficient power plant operation, the U.S. Nuclear Regulatory Commission funded research on 8-hr and 12-hr shifts at the Human Alertness Research Center (HARC) in Boston, Massachusetts. This report describes the research undertaken: a study of simulated 8-hr and 12-hr work shifts that compares alertness, speed, and accuracy at responding to simulator alarms, and relative cognitive performance, self-rated mood and vigor, and sleep-wake patterns of 8-hr versus 12-hr shift workers.

  6. 12-hour-shift plant schedule improves operator productivity

    International Nuclear Information System (INIS)

    Twelve-hour scheduling has been a mainstay of the petrochemical industry, is common in the papermill industry, and is relatively new to the nuclear utility industry. A review of industry experiences, research, and a federal Nuclear Regulatory Commission (NRC) study of the 12-hour shift (NUREG/CR-4248) demonstrate that the advantages outweigh the disadvantages. The primary advantages are greater job satisfaction, fewer errors, and the better communications inherent in two shift turnovers versus three. Several companies that implemented the 12-hour shift found an increase in employee morale, no adverse effect on worker health, and no decline in safety. They experienced greater productivity, fewer operator errors, and better communication

  7. 12 hour shifts: nurse burnout, job satisfaction & intention to leave

    OpenAIRE

    Dall'Ora, C.; Griffiths, P.; J. Ball

    2015-01-01

    Job satisfaction and burnout in the nursing workforce are global concerns. Not only do job satisfaction and burnout affect the quality and safety of care, but job satisfaction is also a factor in nurses’ decisions to stay or leave their jobs. Shift patterns may be an important aspect influencing wellbeing and satisfaction among nurses. Many hospitals worldwide are moving to 12-hour shifts in an effort to improve efficiency and cope with nursing shortages. But what is the effect of these work ...

  8. Self-Reported Recovery from 2-Week 12-Hour Shift Work Schedules: A 14-Day Follow-Up

    OpenAIRE

    Merkus, Suzanne L.; Holte, Kari Anne; Huysmans, Maaike A.; van de Ven, Peter M; van Mechelen, Willem; van der Beek, Allard J

    2015-01-01

    Background Recovery from fatigue is important in maintaining night workers' health. This study compared the course of self-reported recovery after 2-week 12-hour schedules consisting of either night shifts or swing shifts (i.e., 7 night shifts followed by 7 day shifts) to such schedules consisting of only day work. Methods Sixty-one male offshore employees—20 night workers, 16 swing shift workers, and 25 day workers—rated six questions on fatigue (sleep quality, feeling rested, physical and m...

  9. Working night shifts affects surgeons' biological rhythm

    DEFF Research Database (Denmark)

    Amirian, Ilda; Andersen, Lærke T; Rosenberg, Jacob;

    2015-01-01

    Scale and Visual Analog Scale of fatigue, general well-being, and sleep quality. RESULTS: For both metabolite of melatonin and cortisol, a significant difference (P ...BACKGROUND: Chronic sleep deprivation combined with work during the night is known to affect performance and compromise residents' own safety. The aim of this study was to examine markers of circadian rhythm and the sleep-wake cycle in surgeons working night shifts. METHODS: Surgeons were monitored...... and on PC1. For all subjective measures, a marked deterioration was seen on PC1. CONCLUSION: Surgeons' circadian rhythm was affected by working night shifts....

  10. Sleep strategies of night shift nurses on days off: which ones are most adaptive?

    Directory of Open Access Journals (Sweden)

    Megan E Petrov

    2014-12-01

    Full Text Available Objectives: To determine the off-shift sleep strategies of bi-ethnic night shift nurses, the relationship between these sleep strategies and adaptation to shift work, and identify the participant-level characteristics associated with a given sleep strategy.Methods: African American and non-Hispanic White female, night shift nurses from an academic hospital were recruited to complete a survey on sleep-wake patterns (n = 213. Participants completed the Standard Shiftwork Index and the Biological Clocks Questionnaire to determine sleep strategies and adaptation to night shift work. In addition, chronotype was determined quantitatively with a modified version of the Munich ChronoType Questionnaire.Most participants worked approximately three consecutive 12-hour night shifts followed by several days off.Results: Five sleep strategies used on days off were identified: a Night Stay, b Nap Proxy, c Switch Sleeper, d No Sleep, and e Incomplete Switcher. Nap Proxy and No Sleep types were associated with poorer adaptation to night shift work. The Switch Sleeper and Incomplete Switcher types were identified as more adaptive strategies that were associated with less sleep disturbance, a later chronotype, and less cardiovascular problems.Conclusions: Behavioral sleep strategies are related to adaptation to a typical night-shift schedule among hospital nurses. Nurses are crucial to the safety and well-being of their patients. Therefore, adoption of more adaptive sleep strategies may reduce sleep/wake dysregulation in this population, and improve cardiovascular outcomes.

  11. Comparisons of psychosomatic health and unhealthy behaviors between cleanroom workers in a 12-hour shift and those in an 8-hour shift.

    Science.gov (United States)

    Yamada, Y; Kameda, M; Noborisaka, Y; Suzuki, H; Honda, M; Yamada, S

    2001-12-01

    The General Health Questionnaire (GHQ12) and physical fitness tests were administered to 338 workers in clean rooms producing electronic parts in 12-h shifts. The results were compared to those in 95 workers in 8-h shifts and 284 daytime management, clerical and engineering workers. The 12-h shift workers complained of poor health, dissatisfaction with life and poor recuperation from fatigue more than the 8-h shift workers although the rates of complaints were highest in the daytime workers. The GHQ scores were similar in the two shift groups, and much better than those in the daytime workers. However, the 12-h shift workers showed significantly lower fitness levels than the 8-h shift workers, and the levels were even worse than the daytime workers who had higher mean age and BMI levels compared with the shift workers. The tendency to have sedentary freetime activities and larger alcohol and cigarette consumption were observed in the 12-h shift workers. The 12-h shift work may have contributed to the unhealthy behaviors resulting in lower physical fitness levels. Health promotion services at the workplace should devote greater attention to long-hour shift workers, together with devising the ways to improve working conditions and environments for reducing fatigue at work.

  12. Shifting the feeding of mice to the rest phase creates metabolic alterations, which, on their own, shift the peripheral circadian clocks by 12 hours

    Science.gov (United States)

    Mukherji, Atish; Kobiita, Ahmad; Chambon, Pierre

    2015-01-01

    The molecular mechanisms underlying the events through which alterations in diurnal activities impinge on peripheral circadian clocks (PCCs), and reciprocally how the PCCs affect metabolism, thereby generating pathologies, are still poorly understood. Here, we deciphered how switching the diurnal feeding from the active to the rest phase, i.e., restricted feeding (RF), immediately creates a hypoinsulinemia during the active phase, which initiates a metabolic reprogramming by increasing FFA and glucagon levels. In turn, peroxisome proliferator-activated receptor alpha (PPARα) activation by free fatty acid (FFA), and cAMP response element-binding protein (CREB) activation by glucagon, lead to further metabolic alterations during the circadian active phase, as well as to aberrant activation of expression of the PCC components nuclear receptor subfamily 1, group D, member 1 (Nr1d1/RevErbα), Period (Per1 and Per2). Moreover, hypoinsulinemia leads to an increase in glycogen synthase kinase 3β (GSK3β) activity that, through phosphorylation, stabilizes and increases the level of the RevErbα protein during the active phase. This increase then leads to an untimely repression of expression of the genes containing a RORE DNA binding sequence (DBS), including the Bmal1 gene, thereby initiating in RF mice a 12-h PCC shift to which the CREB-mediated activation of Per1, Per2 by glucagon modestly contributes. We also show that the reported corticosterone extraproduction during the RF active phase reflects an adrenal aberrant activation of CREB signaling, which selectively delays the activation of the PPARα–RevErbα axis in muscle and heart and accounts for the retarded shift of their PCCs. PMID:26627259

  13. Occupational health services for shift and night workers.

    Science.gov (United States)

    Koller, M

    1996-02-01

    It is important for an occupational health service to plan health supervision and measures for shift and night workers considering the biorhythmic and psychosocial desynchronisation, as well as the frequent prevalence of combined effects of adverse environmental and working conditions. The measures taken should be preventive to reduce the expected health risks rather than being rehabilitative. Both a medical surveillance and a counselling service are recommended before and during engagement in shift and night work. Sleep, digestive, metabolic and cardiovascular troubles should be noted and followed up. Medical counselling is especially necessary in the first months of shift and night work exposure and then after long-term exposure. The postulate for timed surveillance and intervention is supported by data of our epidemiologic investigations. The importance of the single health measures is underlined by direct reference to the relevant literature. Recommendations that should be applied in all countries and enterprises are in accordance with the ILO Night Work Convention 1990a and include: (1) appropriate occupational health services provided for night and shift workers, including counselling; (2) first aid facilities during all shift hours; (3) the option of transfer to day work when certified unfit for night work for reasons of health; and (4) measures for women on night shifts, in particular special maternity protection (transfer to day work, social security benefits or an extension of maternity leave). Examples of occupational health services already installed in some states for shift and night workers, and information on future developments are given. Up to now the medical service has been implemented mostly on the basis of collective agreements rather than on the basis of legal provisions. The Austrian Night Shift/Heavy Work Law Regulations of 1981, revised 1993, are cited: workers exposed to night shifts under defined single or combined additional heavy

  14. European Researchers Night, Students on Shift at ALICE

    CERN Document Server

    Fons Rademakers

    2010-01-01

    During European Researchers' Night, on Friday 24 September 2010, from 17:00 to 24:00, pupils from French and Swiss schools visited ALICE and took shifts in the control room, helping the ALICE physicists run the experiment.

  15. Promoting alertness with a short nap during a night shift.

    Science.gov (United States)

    Sallinen, M; Härmä, M; Akerstedt, T; Rosa, R; Lillqvist, O

    1998-12-01

    The use of a short (nap in improving alertness during the early morning hours in the first night shift was examined under laboratory conditions. The study contained four experimental, non-consecutive night shifts with a nap of either 50 or 30 min at 01.00 or 04.00 hours. An experimental night shift without a nap served as a control condition. Each experimental shift was followed by daytime sleep. Fourteen experienced male shift workers went through all of the experimental conditions. The results showed that the naps improved the ability to respond to visual signals during the second half of the night shift. Physiological sleepiness was alleviated by the early naps, as measured 50 min after awakening, but not at the end of the shift. Subjective sleepiness was somewhat decreased by the naps. The naps produced sleep inertia which lasted for about 10-15 min. Daytime sleep was somewhat impaired by the 50 min naps. The study shows that a nap shorter than 1 h is able to improve alertness to a certain extent during the first night shift.

  16. Relationship of night and shift work with weight change and lifestyle behaviors.

    OpenAIRE

    Bekkers, M.B.M; Koppes, L.L.J.; Rodenburg, W.; van Steeg, H.; Proper, K.I.

    2015-01-01

    Objective: To prospectively study the association of night and shift work with weight change and lifestyle behaviors. Methods: Workers participating in the Netherlands Working Conditions Cohort Study (2008 and 2009) (N = 5951) reported night and shift work, weight and height. Groups included stable night or shift work, from day work to night or shift work, from night or shift work to day work, and no night or shift work in 2008 and 2009. Regression analyses were used to study association chan...

  17. Working the Night Shift: The Impact of Compensating Wages and Local Economic Conditions on Shift Choice

    Directory of Open Access Journals (Sweden)

    Colene Trent

    2014-01-01

    Full Text Available The theory of compensating differentials asserts that night shift workers should receive compensating wage differentials due to undesirable work conditions. In weak local economies, workers may have difficulty finding jobs; thus, these workers might be more likely to accept night shift work and be less concerned with the size of the compensating differential for night shifts. Using CPS data from 2001, this paper employs maximum likelihood estimation of an endogenous switching regression model to analyze wages of day and night shift workers and shift choice. The findings indicate the presence of selection bias, thus emphasizing the importance of correcting for self-selection into night shifts. The average of the estimated wage differentials for night shift work is negative for the overall sample, with differentials varying by worker characteristics. The shift differential is found to be a statistically significant predictor of shift choice, indicating that shift premiums play an important role in motivating individuals to select night shift work. Using two measures of local economic conditions and a new method of analyzing interaction effects in the context of an endogenous switching regression model, this paper finds limited evidence that weak local economic conditions lessen the impact of compensating differentials on shift choice.

  18. Night shift working mothers: mutual perceptions with adolescent children

    OpenAIRE

    Sizane, Nongazi Florinah; Van Rensburg, Esme

    2011-01-01

    The study investigated the mutual perception of relationships between mothers with day and night shift work and their teenage children. A cross-sectional survey using purposeful sampling was used. Two groups of 35 mothers and their adolescent children completed a Parent-Adolescent Relationship-Questionnaire (Robin, Koepke, Moye & Gerhardstein, 20(19). Data was analysed by means of SAS and SPSS programmes. Findings show that adolescent children of day shift working mothers perceive communicati...

  19. Decreased heart rate variability in surgeons during night shifts

    DEFF Research Database (Denmark)

    Amirian, Ilda; Toftegård Andersen, Lærke; Rosenberg, Jacob;

    2014-01-01

    BACKGROUND: Heart rate variability (HRV) has been used as a measure of stress and mental strain in surgeons. Low HRV has been associated with death and increased risk of cardiac events in the general population. The aim of this study was to clarify the effect of a 17-hour night shift on surgeons'...

  20. Les 2x12h : une solution au conflit de temporalités du travail posté ? The 12-hour shifts system: A way to settle conflicting temporalities in shift work

    Directory of Open Access Journals (Sweden)

    Béatrice Barthe

    2009-11-01

    Full Text Available Les horaires de travail en 2x12h semblent faciliter l’articulation des temporalités mise à mal par le travail posté, articulation avec les dimensions temporelles du fonctionnement humain : les rythmicités biologiques, l’organisation de la vie socio-familiale et la fatigue notamment. Dans un contexte social et économique favorable à la diffusion des 2x12h, cet article propose une synthèse des effets de ces horaires de travail posté sur la santé, sur la vie personnelle des opérateurs concernés et sur le travail. Même si, comparés aux autres systèmes d’horaires, les 2x12h semblent avoir des conséquences moindres sur la santé et la vie personnelle, cette synthèse montre l’importance d’autres facteurs (caractéristiques des personnes, temps d’exposition aux horaires, propriétés du système d’horaires, par exemple sur ces effets et la nécessité d’intégrer l’analyse du contenu du travail et des exigences du travail dans l’analyse de ces effets. Avant de penser le 2x12h comme une solution au conflit de temporalités du travail posté, la réflexion d’aménagement des horaires de travail se doit d’intégrer une analyse systémique et détaillée du travail, prenant en compte le contenu du travail, les exigences des tâches et les stratégies d’accord des temporalités mises en place par les opérateurs concernés au niveau de leur activité de travail.Twelve-hour shifts appear to facilitate the flow of temporalities involved in shift work schedules and the different temporal dimensions of human functioning: particularly biological rhythms, private life, and fatigue. In a social and economic context that favors the increase of 12-h shifts, this paper sums up the effects of 12-h shifts on health, personal life, and work. 12-h shifts seem to have less impact on health and personal life, when compared with other shift-work systems. This synthesis shows the importance of other factors (characteristics of the

  1. Effects of melatonin administration on daytime sleep after simulated night shift work

    OpenAIRE

    Sharkey, Katherine M; Fogg, Louis F; Eastman, Charmane I.

    2001-01-01

    Disturbed sleep and on-the-job sleepiness are widespread problems among night shift workers. The pineal hormone melatonin may prove to be a useful treatment because it has both sleep-promoting and circadian phase-shifting effects. This study was designed to isolate melatonin’s sleep-promoting effects, and to determine whether melatonin could improve daytime sleep and thus improve night time alertness and performance during the night shift. The study utilized a placebo-controlled, double-blind...

  2. Occupational history of night shift work and Parkinson's disease in Denmark

    DEFF Research Database (Denmark)

    Schernhammer, Eva S; Lassen, Christina F; Kenborg, Line;

    2015-01-01

    shift work and PD [odds ratio (OR) for any type of night work (ie, either permanent or rotating night work) 1.01, 95% confidence interval (95% CI) 0.86-1.21]. Compared with persons who never worked night shifts, risks of those with longer durations of night work did not appear to differ (OR ....95, 95% CI 0.75-1.19, OR 10-19 years= 1.09, 95% CI 0.77-1.53, OR ≥20 years=1.05, 95% CI 0.81-1.37, P for trend=0.23). Associations were similar among men and women. CONCLUSIONS: These data suggest that working night shifts is not associated with PD or that low tolerance for night shift work is an early...

  3. Relationship of night and shift work with weight change and lifestyle behaviors.

    NARCIS (Netherlands)

    Bekkers, M.B.M; Koppes, L.L.J.; Rodenburg, W.; Steeg, H. van; Proper, K.I.

    2015-01-01

    Objective: To prospectively study the association of night and shift work with weight change and lifestyle behaviors. Methods: Workers participating in the Netherlands Working Conditions Cohort Study (2008 and 2009) (N = 5951) reported night and shift work, weight and height. Groups included stable

  4. Relationship of night and shift work with weight change and lifestyle behaviors

    NARCIS (Netherlands)

    Bekkers, M.B.M.; Koppes, L.L.J.; Rodenburg, W.; Steeg, H. van; Proper, K.I.

    2015-01-01

    Objective: To prospectively study the association of night and shift work with weight change and lifestyle behaviors. Methods: Workers participating in the Netherlands Working Conditions Cohort Study (2008 and 2009) (N = 5951) reported night and shift work, weight and height. Groups included stable

  5. The impact on nurse digestive system caused by working the night shift

    OpenAIRE

    Pae, Karina

    2015-01-01

    The specific of nursing job requires working around the clock. But the human is meant to work during the day not at night. Suchwise, a large number of nurses are working at night that is contrary to the biological rhythms. The aim of the thesis was to investigate the impact of night shift on nurse digestive system. By interviewing health care workers the goal was to find out, do they experi-ence gastrointestinal symptoms caused by rotating night shifts. In addition the aim was to determin...

  6. Laparoscopic Skills and Cognitive Function are not Affected in Surgeons During a Night Shift

    DEFF Research Database (Denmark)

    Amirian, Ilda; Andersen, Lærke T; Rosenberg, Jacob;

    2014-01-01

    OBJECTIVE: To monitor surgeons' performance and cognition during night shifts. DESIGN: Surgeons were monitored before call and on call (17-hour shift). Psychomotor performance was assessed by laparoscopic simulation and cognition by the d2 test of attention. The surgeons performed the laparoscopic...... compared with on-call values. The d2 test of attention showed significantly improved values on call compared with before call. CONCLUSION: Sleep deprivation during a 17-hour night shift did not impair surgeons' psychomotor or cognitive performance....

  7. Night shift working mothers and their adolescent children's mutual perception of their relationships / Nongazi Florinah Sizane

    OpenAIRE

    Sizane, Nongazi Florinah

    2010-01-01

    Night shift or non-standard work continues to grow throughout the economy (Beers, 2000). Women's roles in society are changing as they find themselves having to join the work force due to economic need. South African women most of whom are mothers are no exception in this regard. Many of these mothers are obliged to do night shift work. Sectors like manufacturing and public-oriented industries often use shift work to ensure efficient continuous operation and uninterrupted response to the need...

  8. How a small enterprise improved the conditions of night and shift work using local resources.

    Science.gov (United States)

    Khai, T T; Kawakami, T; Kogi, K

    2001-12-01

    A small oxygen factory in Cantho Province located in the Mekong Delta Area in the southern part of Vietnam was studied to provide practical support measures to improve night and shift work. A direct observation study and a fatigue symptom survey during the work were conducted. The factory applied discontinuous two-shift systems in two teams. Depending on customers' demands, they frequently prolonged oxygen production until midnight. The study results showed work-related risks such as carrying heavy oxygen cylinders, workers' sleepiness during the night work, and increased fatigue feelings among production operators. Based on the study results, better strategies for night and shift work schedules such as regular work hours minimizing overtime and night work were discussed with the managers and workers. A follow-up visit three months later confirmed many improvements undertaken in the factory. Better work arrangements for night and shift workers were made including local lighting, resting corners, filling the height gaps on the work floors, and clear work instructions. Prolonged mid-night shift was stopped. It was concluded that local small enterprises in Vietnam have much potential to improve their conditions of shift and night work once practical support measures based on their local practice is given.

  9. Neuroendocrine recovery after 2-week 12-h day and night shifts

    DEFF Research Database (Denmark)

    Merkus, Suzanne L; Holte, Kari Anne; Huysmans, Maaike A;

    2015-01-01

    PURPOSE: The study aimed to investigate the course and duration of neuroendocrine recovery after 2-week 12-h day and night shift working periods and to study whether there were differences in recovery between the shift groups. METHODS: Twenty-nine male offshore employees working 2-week 12-h shift...... tours participated in the study; 15 participated after a day shift tour and 14 after a night shift tour. Salivary cortisol was assessed at awakening, 30 min after awakening, and before bedtime on the 1st, 4th, 7th, and 11th day of the free period, with a reference day prior to the offshore tour....... Differences were tested using generalised estimating equations analysis. RESULTS: Compared to the reference day, night shift workers had a significantly flatter cortisol profile on the 1st day off, significantly lower cortisol concentrations at 30 min after awakening on day 4 and at awakening on day 7...

  10. The effect of the number of consecutive night shifts on diurnal rhythms in cortisol, melatonin and heart rate variability (HRV)

    DEFF Research Database (Denmark)

    Jensen, Marie Aarrebo; Garde, Anne Helene; Kristiansen, Jesper;

    2016-01-01

    PURPOSE: The purpose of this review is to summarize the current knowledge from field studies on how many consecutive night shifts are required for adaptation of diurnal rhythms in cortisol, melatonin and heart rate variability (HRV) to night work. METHODS: A systematic search of the databases Pub...... recordings for HRV. Most of the studies in the review were small studies with less than 30 participants, and most studies evaluated diurnal rhythms after only two consecutive night shifts whereas only six studies used seven or more consecutive night shifts. The majority of studies found that adaptation...... to night work had not occurred after two consecutive night shifts, whereas a small number found evidence for full adaptation after seven consecutive night shifts based on diurnal rhythms in cortisol and melatonin. CONCLUSION: There are methodological differences in the field studies analyzing diurnal...

  11. Relationship between napping during night shift work and household obligations of female nursing personnel.

    Science.gov (United States)

    Silva-Costa, Aline; Fischer, Frida Marina; Griep, Rosane Harter; Rotenberg, Lúcia

    2013-01-01

    Night shift employment involves displacing sleep to the daytime. For female workers, the opportunity for daytime sleep is influenced by routine housework demands, which aggravates sleep deprivation. Allowing naps to be taken during the night shift of work is a frequent practice at some hospitals and can help reduce the effects of sleep deprivation. We hypothesize that an association between domestic work and the length of naps during night work exists for nursing professionals. To test this hypothesis, two cross-sectional studies were conducted in two different hospitals. In Study 1, female workers answered questionnaires regarding sleeping habits, professional work, and housework demands. In Study 2, data regarding napping during shifts was obtained by actigraphy, a noninvasive method of monitoring the human sleep-wake cycle. The demand for the performance of housework was measured by (i) domestic work hours (total time spent performing domestic work per week), and (ii) domestic workload, which considers the degree of sharing domestic tasks and the number of people living at home. The populations from the two studies were subdivided into groups, based on the duration of napping at work. Data on naps were analyzed according to domestic demands, using the Mann-Whitney and Chi-squared tests. Among the two study populations (Studies 1 and 2), those in Study 2 were older, had shorter professional weekly work hours, worked more night shifts, and dedicated more time to housework. significant associations were only found in Study 2, where greater time napping at work was associated with both greater time spent doing housework and greater domestic workload. The known benefits of napping during night shifts seem to be especially relevant for female workers who are more sleep-deprived from working more night shifts and who have higher demands for housework.

  12. Effects of extended work shifts on employee fatigue, health satisfaction, work/family balance, and patient safety.

    NARCIS (Netherlands)

    Estryn-Behar, M.; Heijden, van der B.I.J.M.

    2012-01-01

    12-hour shifts are quickly spreading in Europe. From our multivariate analysis concerning 25,924 European nurses, including twenty explanatory variables simultaneously, we found that work schedule itself is not a major determinant factor. Nurses aim to choose or accept night shifts or 12-hour shift

  13. The impact of shift work on the psychological and physical health of nurses in a general hospital: a comparison between rotating night shifts and day shifts

    Directory of Open Access Journals (Sweden)

    Ferri P

    2016-09-01

    Full Text Available Paola Ferri,1 Matteo Guadi,1 Luigi Marcheselli,1 Sara Balduzzi,1 Daniela Magnani,1 Rosaria Di Lorenzo2 1Department of Diagnostic, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, 2Department of Mental Health, AUSL di Modena, Service of Psychiatric Diagnosis and Treatment, Modena, Italy Background: Shift work is considered necessary to ensure continuity of care in hospitals and residential facilities. In particular, the night shift is one of the most frequent reasons for the disruption of circadian rhythms, causing significant alterations of sleep and biological functions that can affect physical and psychological well-being and negatively impact work performance.Objectives: The aim of this study was to highlight if shift work with nights, as compared with day work only, is associated with risk factors predisposing nurses to poorer health conditions and lower job satisfaction.Methods: This cross-sectional study was conducted from June 1, 2015 to July 31, 2015 in 17 wards of a general hospital and a residential facility of a northern Italian city. This study involved 213 nurses working in rotating night shifts and 65 in day shifts. The instrument used for data collection was the “Standard Shift Work Index,” validated in Italian. Data were statistically analyzed.Results: The response rate was 86%. The nurses engaged in rotating night shifts were statistically significantly younger, more frequently single, and had Bachelors and Masters degrees in nursing. They reported the lowest mean score in the items of job satisfaction, quality and quantity of sleep, with more frequent chronic fatigue, psychological, and cardiovascular symptoms in comparison with the day shift workers, in a statistically significant way.Conclusion: Our results suggest that nurses with rotating night schedule need special attention due to the higher risk for both job dissatisfaction and undesirable health effects. Keywords: shift work, night work

  14. Night shift work and incidence of diabetes in the Danish Nurse Cohort

    DEFF Research Database (Denmark)

    Hansen, Anne B; Stayner, Leslie; Hansen, Johnni;

    2016-01-01

    of diabetes in Danish nurses. METHODS: We used the Danish Nurse Cohort with 28 731 participating female nurses recruited in 1993 (19 898) or 1999 (8833), when self-reported baseline information on diabetes prevalence, lifestyle and working time were collected, and followed them in the Danish Diabetes Register...... for incidence of diabetes until 2013. Nurses reported whether they worked night, evening, rotating or day shifts. We analysed the association between working time and diabetes incidence using a Cox proportional hazards model adjusted for diabetes risk factors, separately with and without adjustment for body...... mass index (BMI) which might be an intermediate variable. RESULTS: Of 19 873 nurses who worked and were diabetes-free at recruitment, 837 (4.4%) developed diabetes during 15 years of follow-up. The majority of nurses (62.4%) worked day shifts, 21.8% rotating shift, 10.1% evening and 5.5% night shifts...

  15. Simulated Night Shift Disrupts Circadian Rhythms of Immune Functions in Humans.

    Science.gov (United States)

    Cuesta, Marc; Boudreau, Philippe; Dubeau-Laramée, Geneviève; Cermakian, Nicolas; Boivin, Diane B

    2016-03-15

    Recent research unveiled a circadian regulation of the immune system in rodents, yet little is known about rhythms of immune functions in humans and how they are affected by circadian disruption. In this study, we assessed rhythms of cytokine secretion by immune cells and tested their response to simulated night shifts. PBMCs were collected from nine participants kept in constant posture over 24 h under a day-oriented schedule (baseline) and after 3 d under a night-oriented schedule. Monocytes and T lymphocytes were stimulated with LPS and PHA, respectively. At baseline, a bimodal rhythmic secretion was detected for IL-1β, IL-6, and TNF-α: a night peak was primarily due to a higher responsiveness of monocytes, and a day peak was partly due to a higher proportion of monocytes. A rhythmic release was also observed for IL-2 and IFN-γ, with a nighttime peak due to a higher cell count and responsiveness of T lymphocytes. Following night shifts, with the exception of IL-2, cytokine secretion was still rhythmic but with peak levels phase advanced by 4.5-6 h, whereas the rhythm in monocyte and T lymphocyte numbers was not shifted. This suggests distinct mechanisms of regulation between responsiveness to stimuli and cell numbers of the human immune system. Under a night-oriented schedule, only cytokine release was partly shifted in response to the change in the sleep-wake cycle. This led to a desynchronization of rhythmic immune parameters, which might contribute to the increased risk for infection, autoimmune diseases, cardiovascular and metabolic disorders, and cancer reported in shift workers. PMID:26873990

  16. Relationship between napping during night shift work and household obligations of female nursing personnel

    Directory of Open Access Journals (Sweden)

    Silva Costa A

    2013-04-01

    Full Text Available Aline Silva-Costa,1,2 Frida Marina Fischer,1 Rosane Harter Griep,2 Lúcia Rotenberg2 1School of Public Health, University of São Paulo, São Paulo, Brazil; 2Laboratory of Health, Environment and Education, Oswaldo Cruz Institute (Fiocruz, Rio de Janeiro, Brazil Abstract: Night shift employment involves displacing sleep to the daytime. For female workers, the opportunity for daytime sleep is influenced by routine housework demands, which aggravates sleep deprivation. Allowing naps to be taken during the night shift of work is a frequent practice at some hospitals and can help reduce the effects of sleep deprivation. We hypothesize that an association between domestic work and the length of naps during night work exists for nursing professionals. To test this hypothesis, two cross-sectional studies were conducted in two different hospitals. In Study 1, female workers answered questionnaires regarding sleeping habits, professional work, and housework demands. In Study 2, data regarding napping during shifts was obtained by actigraphy, a noninvasive method of monitoring the human sleep–wake cycle. The demand for the performance of housework was measured by (i domestic work hours (total time spent performing domestic work per week, and (ii domestic workload, which considers the degree of sharing domestic tasks and the number of people living at home. The populations from the two studies were subdivided into groups, based on the duration of napping at work. Data on naps were analyzed according to domestic demands, using the Mann–Whitney and Chi-squared tests. Among the two study populations (Studies 1 and 2, those in Study 2 were older, had shorter professional weekly work hours, worked more night shifts, and dedicated more time to housework. Significant associations were only found in Study 2, where greater time napping at work was associated with both greater time spent doing housework and greater domestic workload. The known benefits of

  17. Weight gain and body mass index following change from daytime to night shift - a panel study with nursing professionals.

    Science.gov (United States)

    Siqueria, Kali; Griep, Rosane; Rotenberg, Lúcia; Silva-Costa, Aline; Mendes da Fonseca, Maria de Jesus

    2016-01-01

    We analyzed the association between change in work schedule and modifications in nutritional status. We performed a panel study with nursing professionals based on two surveys seven year apart (n = 372). Groups with no change in work schedule, change from daytime to night shift, and change from night to daytime shift were analyzed. Outcomes were weight gain and body mass index (BMI) category increase. Participants who changed from daytime to night shift showed about twice increase in odds of more than 5 kg weight gain and BMI category increase. Changing from daytime to night work seems to influence weight and BMI. PMID:27159160

  18. Effects of Shift Work on the Postural and Psychomotor Performance of Night Workers.

    Directory of Open Access Journals (Sweden)

    Fernanda Veruska Narciso

    Full Text Available The purpose of the study was to investigate the effects of shift work on the psychomotor and postural performance of night workers. The study included 20 polysomnography technicians working schedule of 12-h night shift by 36-h off. On the first day of protocol, the body mass and height were measured, and an actigraph was placed on the wrist of each participant. On the second day of protocol, sleepiness by Karolinska Sleepiness Scale, postural control by force platform (30 seconds and psychomotor performance by Psychomotor Vigilance Task (10 minutes were measured before and after 12-h night work. Results showed that after 12-h night work, sleepiness increased by 59% (p<0.001, postural control variables increased by 9% (p = 0.048, and 14% (p = 0.006. Mean reaction time, and the number of lapses of attention increased by 13% (p = 0.006 and 425% (p = 0.015, respectively, but the mean reciprocal reaction time decreased by 7%. In addition, there were correlations between sleepiness and postural control variables with opened eyes (r = 0.616, 95% confidence interval [CI] = 0.361-0.815; r = 0.538; 95% CI = 0.280-0.748 and closed eyes (r = 0.557; 95% CI = 0.304-0.764, r = 0497; 95% CI = 0.325-0.715 and a pronounced effect of sleepiness on postural sway (R2 = 0.393; 95% CI = 0.001-0.03. Therefore, 12-h night work system and sleepiness showed a negative impact in postural and psychomotor vigilance performance of night workers. As unexpected, the force platform was feasibility to detect sleepiness in this population, underscoring the possibility of using this method in the workplace to prevent occupational injuries and accidents.

  19. Circadian disturbances after night-shift work onboard a naval ship.

    Science.gov (United States)

    Goh, V H; Tong, T Y; Lim, C L; Low, E C; Lee, L K

    2000-02-01

    The aim of the present study was to investigate how night duties can affect the circadian rhythms of military personnel working onboard a naval ship. Twenty individuals on a regular day-work schedule from 9:00 a.m. to 6:00 p.m. (serving as controls) and 40 individuals on night-shift duties participated in the study. Salivary melatonin and cortisol profiles were established within two 24-hour periods from 2-hour saliva samplings. Under the condition of abrupt shift in work/rest schedule, the majority of the navy officers (52%) retained their normal melatonin profiles. Twelve percent displayed a right phase shift in melatonin rhythm after night work. Nineteen percent exhibited distortions in the form of abnormal peaks or troughs, and 17% showed signs of disrupted rhythm in the form of low daytime levels of melatonin throughout the sampling period. No consistent relationship was found between the melatonin changes and various work stations of the ship. Prominent changes in the cortisol profile included unexpected peaks or troughs that may be related to the conditions that individuals were exposed to, i.e., high noise level in the engine room, as well as to performing intense tracking operations. The findings of this study (1) show the possible detrimental effects of shift duties on circadian rhythms, (2) highlight a wide interindividual variation in the manner in which the circadian systems respond to an abrupt phase shift in work/rest schedules, and (3) form the basis for further investigations into effective strategies to help military personnel cope with shift work, thereby maintaining health and high working standards while on duty.

  20. Circadian disturbances after night-shift work onboard a naval ship.

    Science.gov (United States)

    Goh, V H; Tong, T Y; Lim, C L; Low, E C; Lee, L K

    2000-02-01

    The aim of the present study was to investigate how night duties can affect the circadian rhythms of military personnel working onboard a naval ship. Twenty individuals on a regular day-work schedule from 9:00 a.m. to 6:00 p.m. (serving as controls) and 40 individuals on night-shift duties participated in the study. Salivary melatonin and cortisol profiles were established within two 24-hour periods from 2-hour saliva samplings. Under the condition of abrupt shift in work/rest schedule, the majority of the navy officers (52%) retained their normal melatonin profiles. Twelve percent displayed a right phase shift in melatonin rhythm after night work. Nineteen percent exhibited distortions in the form of abnormal peaks or troughs, and 17% showed signs of disrupted rhythm in the form of low daytime levels of melatonin throughout the sampling period. No consistent relationship was found between the melatonin changes and various work stations of the ship. Prominent changes in the cortisol profile included unexpected peaks or troughs that may be related to the conditions that individuals were exposed to, i.e., high noise level in the engine room, as well as to performing intense tracking operations. The findings of this study (1) show the possible detrimental effects of shift duties on circadian rhythms, (2) highlight a wide interindividual variation in the manner in which the circadian systems respond to an abrupt phase shift in work/rest schedules, and (3) form the basis for further investigations into effective strategies to help military personnel cope with shift work, thereby maintaining health and high working standards while on duty. PMID:10709369

  1. Use of Circadian Lighting System to improve night shift alertness and performance of NRC Headquarters Operations Officers

    International Nuclear Information System (INIS)

    The Nuclear Regulatory Commission's (NRC) Headquarters Operations Officers (HOOs) receive and respond to events reported in the nuclear industry on a 24-hour basis. The HOOs have reported reduced alertness on the night shift, leading to a potential deterioration in their on-shift cognitive performance during the early morning hours. For some HOOs, maladaptation to the night shift was also reported to be the principal cause of: (a) reduced alertness during the commute to and from work, (b) poor sleep quality, and (c) personal lifestyle problems. ShiftWork Systems, Inc. (SWS) designed and installed a Circadian Lighting System (CLS) at both the Bethesda and Rockville HOO stations with the goal of facilitating the HOOs physiological adjustment to their night shift schedules. The data indicate the following findings: less subjective fatigue on night shifts; improved night shift alertness and mental performance; higher HOO confidence in their ability to assess event reports; longer, deeper and more restorative day sleep after night duty shifts; swifter adaptation to night work; and a safer commute, particularly for those with extensive drives

  2. Use of Circadian Lighting System to improve night shift alertness and performance of NRC Headquarters Operations Officers

    Energy Technology Data Exchange (ETDEWEB)

    Baker, T.L.; Morisseau, D.; Murphy, N.M. [ShiftWork Systems, Cambridge, MA (United States)] [and others

    1995-04-01

    The Nuclear Regulatory Commission`s (NRC) Headquarters Operations Officers (HOOs) receive and respond to events reported in the nuclear industry on a 24-hour basis. The HOOs have reported reduced alertness on the night shift, leading to a potential deterioration in their on-shift cognitive performance during the early morning hours. For some HOOs, maladaptation to the night shift was also reported to be the principal cause of: (a) reduced alertness during the commute to and from work, (b) poor sleep quality, and (c) personal lifestyle problems. ShiftWork Systems, Inc. (SWS) designed and installed a Circadian Lighting System (CLS) at both the Bethesda and Rockville HOO stations with the goal of facilitating the HOOs physiological adjustment to their night shift schedules. The data indicate the following findings: less subjective fatigue on night shifts; improved night shift alertness and mental performance; higher HOO confidence in their ability to assess event reports; longer, deeper and more restorative day sleep after night duty shifts; swifter adaptation to night work; and a safer commute, particularly for those with extensive drives.

  3. Napping during the night shift and recovery after work among hospital nurses

    Directory of Open Access Journals (Sweden)

    Thaís Aparecida de Castro Palermo

    2015-02-01

    Full Text Available OBJECTIVE: To analyze the association between the length of napping during the night shift and the recovery after work among nurses.METHOD: Cross-sectional epidemiological study involving 1940 nurses from 18 public hospitals in the City of Rio de Janeiro. A multidimensional and self-applied questionnaire was used with information about health, sociodemographic and occupational characteristics, health-related behaviors and housework. Multiple logistic regression was applied to identify the association, adjusted for confounding variables.RESULTS: The gross analyses showed 44%, 127% and 66% higher chances of a high level of recovery after work for nurses who sleep up to two hours, between 2.1 and 3 hours and 3.1 hours or more, respectively, when compared to the nurses who do not sleep. After adjusting for confounding variables, the association only continues significant for the group that sleeps 2.1 to 3 hours during the night shift (OR=1.79; 95%CI=1.33-2.41.CONCLUSION: The association between the length of napping and the high level of recovery after work, confirmed in the present results, can be included in the studies that aim to support more appropriate policies aimed at improving the workers' work, life and health conditions, not only in nursing, but night-shift workers in general.

  4. Napping during the night shift and recovery after work among hospital nurses1

    Science.gov (United States)

    Palermo, Thaís Aparecida de Castro; Rotenberg, Lúcia; Zeitoune, Regina Célia Gollner; Silva-Costa, Aline; Souto, Ester Paiva; Griep, Rosane Härter

    2015-01-01

    OBJECTIVE: To analyze the association between the length of napping during the night shift and the recovery after work among nurses. METHOD: Cross-sectional epidemiological study involving 1940 nurses from 18 public hospitals in the City of Rio de Janeiro. A multidimensional and self-applied questionnaire was used with information about health, sociodemographic and occupational characteristics, health-related behaviors and housework. Multiple logistic regression was applied to identify the association, adjusted for confounding variables. RESULTS: The gross analyses showed 44%, 127% and 66% higher chances of a high level of recovery after work for nurses who sleep up to two hours, between 2.1 and 3 hours and 3.1 hours or more, respectively, when compared to the nurses who do not sleep. After adjusting for confounding variables, the association only continues significant for the group that sleeps 2.1 to 3 hours during the night shift (OR=1.79; 95%CI=1.33-2.41). CONCLUSION: The association between the length of napping and the high level of recovery after work, confirmed in the present results, can be included in the studies that aim to support more appropriate policies aimed at improving the workers' work, life and health conditions, not only in nursing, but night-shift workers in general. PMID:25806639

  5. The Role of Bright Light during Night Work on Stress and Health Status of Shift Work Nurses

    Directory of Open Access Journals (Sweden)

    Mostafa Hosseini

    2009-04-01

    Full Text Available Research has shown that shift work, in particular night work, can have negative effects on the health, safety and well-being of workers. Our study assessed, in a hospital setting, the effects of bright light (BL on general health and psychological problems during night shift work. In an experimental design, 15 female nurses at a general hospital that located in Tehran were exposed to moderate bright light (2000 lx during night work. The evaluation of general health status, job stress, and burnout syndrome conditions was done as follows: The 28-item General Health Questionnaire (GHQ-28 was used as a screening tool for the detection of general health status; for assessing the level of stress, perception stress scale (PSS was filled; and for burnout syndrome conditions, burnout self-report questionnaire (BSR was completed. T-test and paired t-test analysis were used to assess the association between BL exposure for a total of 30 min during each night shift and changes in general health status, job stress and burnout syndrome. This study clearly shows that BL administration could not reduce anxiety symptoms, somatic symptoms, severe depression and improved social dysfunction significantly during night shift. However, BL exposure significantly decreased the perception stress (P=0.008 and burnout syndrome (P=0.06 during night permanent shift. These results suggest that BL might have provoked changes in perception stress and burnout syndrome of nurses working night permanent shift.

  6. Integrated ergonomics approach toward designing night and shift work in developing countries based on experiences in Bali, Indonesia.

    Science.gov (United States)

    Manuaba, A

    2001-12-01

    Recently, the effort in carrying out an integrated ergonomics approach known as "SHIP" (systemic, holistic, interdisciplinary and participatory) approach has been intensively undertaken in Bali with the aim of sustaining improvements being done. The People's Consultative Assembly of the Republic of Indonesia issued for the 1999-2004 period a "SHIP" Act on the Macro Guidelines of Tourism Development in which ergonomics and other factors must be considered comprehensively to attain sustainable development in tourism. Therefore the night and shift work that is recently increasingly applied in the tourism industry must also be designed and organized through this approach. In fact, however, economic factors have still been the predominant reason for workers to accept any type of night and shift work decided by the management, without taking into account possible impacts and consequences. For example, rapid forward rotation schemes seem more adapted to the hotel industry instead of traditional 6-6-6 rotation. Further, inter-city bus drivers are approved to work a 24-hour shift followed by one day off. These drivers often work an additional risky night shift after two consecutive night shifts so as to meet needed expenses for the family. Cultural or religious activities still presented constraints for workers as they carried out subsequently the night work. Therefore, proactive steps should be taken in a timely manner through the integrated SHIP approach in designing night and shift work so as to achieve work schedules compatible with both social life of shiftworkers and business concerns. PMID:14564879

  7. From the CERN web: grid computing, night shift, ridge effect and more

    CERN Multimedia

    2015-01-01

    This section highlights articles, blog posts and press releases published in the CERN web environment over the past weeks. This way, you won’t miss a thing...   Schoolboy uses grid computing to analyse satellite data 9 December - by David Lugmayer  At just 16, Cal Hewitt, a student at Simon Langton Grammar School for Boys in the United Kingdom became the youngest person to receive grid certification – giving him access to huge grid-computing resources. Hewitt uses these resources to help analyse data from the LUCID satellite detector, which a team of students from the school launched into space last year. Continue to read…    Night shift in the CMS Control Room (Photo: Andrés Delannoy). On Seagull Soup and Coffee Deficiency: Night Shift at CMS 8 December – CMS Collaboration More than half a year, a school trip to CERN, and a round of 13 TeV collisions later, the week-long internship we completed at CMS over E...

  8. Self-reported health and sleep complaints among nursing personnel working under 12 h night and day shifts.

    Science.gov (United States)

    Portela, Luciana F; Rotenberg, Lúcia; Waissmann, William

    2004-01-01

    This cross-sectional exploratory study involved health care workers of various skill types and levels. We tested the hypothesis that the prevalence of diseases, sleep complaints, and insufficient time for nonprofessional activities (family, leisure, and rest) are higher among night than day workers. Data collection was carried out in two public hospitals using questionnaires and other forms. Night work was explored as a risk factor, considering a night worker as one who had at least one night job on the occasion of the research. Data were assessed by a univariate analysis. The association between work schedule and the dependent variables--health conditions, sleep complaints, and insufficient time for nonprofessional activities--was evaluated through the estimation of the prevalence ratio, with a confidence interval of 95%. Two hundred and fifty-eight female nursing personnel participated; 41.5% were moonlighters, and only 20 worked a shift of less than 12h in length. Reports of migraine and need of medical care the 2 weeks before the survey were more prevalent among day than night workers (PR=0.71; CI=0.55-0.92 and PR=0.71; CI=0.52-0.95, respectively). Migraine headaches occurred less frequently among night than day workers as confirmed by comparing the reports of the night workers and day workers whose work history was always day shifts (PR = 0.74; CI = 0.57-0.96). Reports of mild emotional disorders (mild depression, tension, anxiety, or insomnia) were less frequent among night (PR=0.76; CI=0.59-0.98) and ex-night workers (PR=0.68; CI=0.50-0.91) than day workers who never had worked a night job. The healthy worker effect does not seem to explain the results of the comparisons between day and night workers. The possible role of exposure by day workers to some risk factors, such as stress, was suggested as an explanation for these results. No significant difference was observed between night and day workers as to sleep complaints, a result that may have been

  9. Sleep, Fatigue and Quality of Life: A Comparative Analysis among Night Shift Workers with and without Children

    Science.gov (United States)

    Fernandes-Junior, Silvio Araújo; Ruiz, Francieli Silva; Antonietti, Leandro Stetner; Tufik, Sergio; Túlio de Mello, Marco

    2016-01-01

    Introduction The reversal of the natural cycle of wakefulness and sleep may cause damage to the health of workers. However, there are few studies evaluating sleep, fatigue and quality of life of night shift workers considering the influence of small children on these variables. Aims Evaluate the sleep time, fatigue and quality of life of night shift workers and verify the relationship between these variables with the presence or absence of children in different age groups. Methods Were evaluated 78 mens shiftworkers, with or without children. Group 1, workers without children (G1-NC), group 2, workers with children pré-school age (G2-PS) and group 3, workers with children school age (G3-S). The sleep time (ST), sleep efficiency (SE), sleep latency (SL) and maximum time awake (MTA) were recorded by actigraphy. The risk of being fatigued at work was estimated by risk index for fatigue (RIF). Results The G1-NC showed a longer ST on working days and when evaluated only the first nights shift, after day off (pMTA on day off was lower in the workers from G2-PS. The RIF was lower on G1-NC in the first nights shift compared to the other groups. Conclusion In this research, workers without children had higher sleep time during the working days. These workers also were less likely to feel fatigued during night work than workers with children, regardless of age these children. PMID:27391478

  10. Work schedule and self-reported hypertension - the potential beneficial role of on-shift naps for night workers.

    Science.gov (United States)

    Rotenberg, Lúcia; Silva-Costa, Aline; Vasconcellos-Silva, Paulo Roberto; Griep, Rosane Härter

    2016-01-01

    Data on the association between shift work and hypertension are controversial. Sleep restriction is hypothesized to be involved in this relationship. Since on-shift nap can partly compensate for sleep deprivation among night workers, this investigation is aimed at (i) comparing the prevalence of hypertension among workers considering both current and former night work, (ii) testing the association between on-shift naps and hypertension among night workers, and (iii) analyzing the influence of sleep complaints in the association between on-shift nap and hypertension. Nap was defined as a sleep episode with duration shorter than the average nighttime sleep. A cross-sectional study was performed at the 18 largest public hospitals in Rio de Janeiro, Brazil, in 2010-2011 (N = 2588 female registered nurses). Nurses were informally allowed to nap for up to three consecutive hours during working nights. Workers completed a multidimensional questionnaire including self-reported information on physician diagnosis of hypertension, napping, and sleep complaints (insomnia, diurnal sleepiness, and non-satisfactory sleep). Epidemiological and statistical treatment of data included binomial logistic regression and interaction tests. Higher chances of hypertension were observed for both current and former night workers compared with workers with no previous experience in night work, i.e. exclusive day workers (OR = 1.68; CI95% 1.22-2.33 and OR = 1.40; CI95% 1.01-1.96, respectively) after adjustment for age, race/ethnicity, physical activity, smoking, alcohol consumption, insomnia, weekly work hours, and BMI. Compared with exclusive day workers, both non-nappers and nappers were at a higher likelihood of reporting hypertension (OR = 1.93 CI95% 1.35-2.79 and OR = 1.41 CI95% 1.08-2.20, respectively). An interaction was observed between napping behavior and insomnia (p = 0.037). In the whole sample of night workers, the lower OR for nappers was confirmed when they were directly

  11. Circadian adaptation to night shift work influences sleep, performance, mood and the autonomic modulation of the heart.

    Directory of Open Access Journals (Sweden)

    Philippe Boudreau

    Full Text Available Our aim was to investigate how circadian adaptation to night shift work affects psychomotor performance, sleep, subjective alertness and mood, melatonin levels, and heart rate variability (HRV. Fifteen healthy police officers on patrol working rotating shifts participated to a bright light intervention study with 2 participants studied under two conditions. The participants entered the laboratory for 48 h before and after a series of 7 consecutive night shifts in the field. The nighttime and daytime sleep periods were scheduled during the first and second laboratory visit, respectively. The subjects were considered "adapted" to night shifts if their peak salivary melatonin occurred during their daytime sleep period during the second visit. The sleep duration and quality were comparable between laboratory visits in the adapted group, whereas they were reduced during visit 2 in the non-adapted group. Reaction speed was higher at the end of the waking period during the second laboratory visit in the adapted compared to the non-adapted group. Sleep onset latency (SOL and subjective mood levels were significantly reduced and the LF∶HF ratio during daytime sleep was significantly increased in the non-adapted group compared to the adapted group. Circadian adaptation to night shift work led to better performance, alertness and mood levels, longer daytime sleep, and lower sympathetic dominance during daytime sleep. These results suggest that the degree of circadian adaptation to night shift work is associated to different health indices. Longitudinal studies are required to investigate long-term clinical implications of circadian misalignment to atypical work schedules.

  12. Circadian Adaptation to Night Shift Work Influences Sleep, Performance, Mood and the Autonomic Modulation of the Heart

    Science.gov (United States)

    Boudreau, Philippe; Dumont, Guy A.; Boivin, Diane B.

    2013-01-01

    Our aim was to investigate how circadian adaptation to night shift work affects psychomotor performance, sleep, subjective alertness and mood, melatonin levels, and heart rate variability (HRV). Fifteen healthy police officers on patrol working rotating shifts participated to a bright light intervention study with 2 participants studied under two conditions. The participants entered the laboratory for 48 h before and after a series of 7 consecutive night shifts in the field. The nighttime and daytime sleep periods were scheduled during the first and second laboratory visit, respectively. The subjects were considered “adapted” to night shifts if their peak salivary melatonin occurred during their daytime sleep period during the second visit. The sleep duration and quality were comparable between laboratory visits in the adapted group, whereas they were reduced during visit 2 in the non-adapted group. Reaction speed was higher at the end of the waking period during the second laboratory visit in the adapted compared to the non-adapted group. Sleep onset latency (SOL) and subjective mood levels were significantly reduced and the LF∶HF ratio during daytime sleep was significantly increased in the non-adapted group compared to the adapted group. Circadian adaptation to night shift work led to better performance, alertness and mood levels, longer daytime sleep, and lower sympathetic dominance during daytime sleep. These results suggest that the degree of circadian adaptation to night shift work is associated to different health indices. Longitudinal studies are required to investigate long-term clinical implications of circadian misalignment to atypical work schedules. PMID:23923024

  13. 24 Hours chronomics of ambulatory blood pressure and its relation with circadian rhythm of 6-sulfatoxy melatonin in night shift health care workers

    Directory of Open Access Journals (Sweden)

    B. Anjum

    2015-08-01

    Results: Ambulatory BP and HR were recorded at every 30 min intervals in day time and each hour in night time synchronically with circadian pattern of 6 sulfatoxy melatonin during shift duties. Highly Significant difference was found in double amplitude (2DA of blood pressure between night and day shift (p<0.001. In night shift, hyperbaric index (HBI of mean systolic blood pressure was found to be increased at 00-03 am (midnight while during day shift, peak was found at 06-09 am. Peak melatonin was to be found in early morning as compared to mid night in both the shift. Conclusions: The present study concluded that the desynchronization was appeared during night shift and entrainment of circadian rhythm in the day shift. [Int J Res Med Sci 2015; 3(8.000: 1922-1931

  14. Impact of Night Shift and Training Development Factors on Performance of Professional Nurses in North West Bank Governmental Hospitals

    Science.gov (United States)

    Ayed, Ahmad; Thulth, Ahida Saleem; Sayej, Sumaya

    2015-01-01

    Background: Organizational factors are considered to be the cornerstone in achieving psychological and professional security at work, which in turn are positively reflected in job performance both quantitatively and qualitatively. Aim of the Study: The study aimed to assess night shift and education/training developmental factors on performance of…

  15. Sleep, Fatigue and Quality of Life: A Comparative Analysis among Night Shift Workers with and without Children

    Science.gov (United States)

    Fernandes-Junior, Silvio Araújo; Ruiz, Francieli Silva; Antonietti, Leandro Stetner; Tufik, Sergio; Túlio de Mello, Marco

    2016-01-01

    Introduction The reversal of the natural cycle of wakefulness and sleep may cause damage to the health of workers. However, there are few studies evaluating sleep, fatigue and quality of life of night shift workers considering the influence of small children on these variables. Aims Evaluate the sleep time, fatigue and quality of life of night shift workers and verify the relationship between these variables with the presence or absence of children in different age groups. Methods Were evaluated 78 mens shiftworkers, with or without children. Group 1, workers without children (G1-NC), group 2, workers with children pré-school age (G2-PS) and group 3, workers with children school age (G3-S). The sleep time (ST), sleep efficiency (SE), sleep latency (SL) and maximum time awake (MTA) were recorded by actigraphy. The risk of being fatigued at work was estimated by risk index for fatigue (RIF). Results The G1-NC showed a longer ST on working days and when evaluated only the first nights shift, after day off (p<0,005). This sample, the age of the children did not influence the sleep time these workers. The MTA on day off was lower in the workers from G2-PS. The RIF was lower on G1-NC in the first nights shift compared to the other groups. Conclusion In this research, workers without children had higher sleep time during the working days. These workers also were less likely to feel fatigued during night work than workers with children, regardless of age these children. PMID:27391478

  16. Support measures to improve night and shift work conditions in Thailand: a case study in a glass factory.

    Science.gov (United States)

    Chaikittiporn, C; Kawakami, T; Kogi, K

    2001-12-01

    The present study aimed to examine the working conditions of shift workers in a multinational enterprise in Thailand and to identify practical support measures for improvements. A multinational, glass-manufacturing factory employing 1,500 workers was selected as the research site. Three shift systems in three teams were adopted. A direct observation study and a fatigue feeling monitoring study were carried out to compare the differences between different shifts. A 10-day time-budget study was conducted for 30 shift workers to know their work and sleep patterns. The direct observation study identified safety and health risks during the night work periods. The risks included insufficient lighting, height gaps on the floor, excessive exposure to heat, inappropriate workstations, and sleepiness and fatigue feelings among shift workers. Working consecutive double shifts and overtime work was often seen. An advisory meeting was held based on the study findings to assist managers and workers in improving their working conditions. A follow-up visit six months later confirmed that the glass factory implemented several improvements to help night and shift workers. It was concluded that the direct observation methods associated with the time-budget study were helpful for identifying practical action points and strengthening workplace initiatives.

  17. Influence of night-shift and napping at work on urinary melatonin, 17-β-estradiol and clock gene expression in pre-menopausal nurses.

    Science.gov (United States)

    Bracci, M; Copertaro, A; Manzella, N; Staffolani, S; Strafella, E; Nocchi, L; Barbaresi, M; Copertaro, B; Rapisarda, V; Valentino, M; Santarelli, L

    2013-01-01

    Night-workers experience disruption of the sleep-wake cycle and light at night which may increase breast cancer risk by suppressing the nocturnal melatonin surge, resulting in higher levels of circulating estrogens. Night-work may also deregulate peripheral clock genes which have been found to be altered in breast cancer. This study investigated urinary 6-sulfatoxymelatonin (aMT6s), serum 17-beta-estradiol levels in premenopausal shift nurses at the end of the night-shift compared to a control group of daytime nurses. Peripheral clock gene expression in lymphocytes were also investigated. All participants were sampled in the follicular phase of the menstrual cycle. The effect of nurses’ ability to take a short nap during the night-shift was also explored. The shift-work group had significantly lower aMT6s levels than daytime nurses independently of a nap. Night-shift napping significantly influences 17-beta-estradiol levels resulting in higher outcomes in nurses who do not take a nap compared to napping group and daytime workers. Peripheral clock genes expression investigated was not significantly different among the groups. Our findings suggest that shift nurses experience changes in aMT6s levels after a night-shift. Napping habits influence 17-beta-estradiol levels at the end of a night-shift. These findings might be related to the increased cancer risk reported in night-shift workers and suggest that a short nap during night-shifts may exert a positive effect. PMID:23489707

  18. The Association of Sleep Deprivation on the Occurrence of Errors by Nurses Who Work the Night Shift

    Science.gov (United States)

    RAMADAN, MOHAMED ZAKI; AL-SALEH, KHALID SAAD

    2014-01-01

    Purpose: To determine the influence of sleep deprivation on the occurrence of errors by registered nurses working in night shift in intensive care departments. Methods: The study utilized a multi-part questionnaire which included items about demographic characteristics, reported medical errors, and Pittsburgh Sleep Quality Index (PSQI) 300 questionnaires were distributed to registered nurses working in intensive care departments. 138 of the 153 (51% response rate) collected questionnaires were analyzed using correlation and stepwise logistic multiple regression. Results: Registered nurses who were sleep deprived had worse sleep quality in terms of high PSQI than those who were not. None of the demographic variables was statistically significant, not providing evidence that these variables may explain odds for being sleep deprived in the population. Conclusions: Work schedule changes, offering shorter periods of time on night shift and less working hours in the week may lead to better sleep quality and less sleep deprivation. PMID:25729589

  19. Does night-shift work increase the risk of prostate cancer? a systematic review and meta-analysis

    Directory of Open Access Journals (Sweden)

    Rao D

    2015-10-01

    Full Text Available Dapang Rao,1,2 Haifeng Yu,2 Yu Bai,3 Xiangyi Zheng,1 Liping Xie1 1Department of Urology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China; 2Department of Urology, Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, People’s Republic of China; 3Department of Urology, Yunnan Tumor Hospital and Third Affiliated Hospital of Kunming Medical University, Kunming, People’s Republic of China Background: Night-shift work is suggested to be associated with an increased risk of breast cancer, but its association with prostate cancer is still controversial. We examined this association by conducting a systematic review and meta-analysis. Methods: Studies were identified by searching PubMed, EMBASE, Ovid, Web of Science, the Cochrane register, and the China National Knowledge Infrastructure databases through December 25, 2014. Summary relative risks (SRRs with their corresponding 95% confidence intervals (CIs were calculated using a random effects or fixed effects model. Heterogeneity and publication bias were also evaluated. Results: A total of 2,459,845 individuals from eight published studies were included in this meta-analysis. Analysis of all studies suggested that night-shift work was associated with a significantly increased risk of prostate cancer (RR: 1.24, 95% CI: 1.05–1.46; P=0.011. Sensitivity analysis showed that the association remained significant when repeating the analysis after removing one study each time. Dose–response meta-analysis suggested that an increase in night-shift work of 5 years duration was statistically significantly associated with a 2.8% (95% CI: 0.3, 5.4%, P=0.030 increase in the risk of prostate cancer. There was no significant publication bias. Conclusion: Based on a meta-analysis, night-shift work is associated with an increased risk of prostate cancer. Because of the limited number of included studies and the large level of heterogeneity

  20. Benefits of photobiological light exposure during rapidly rotating night-shift work

    NARCIS (Netherlands)

    Groot, E.H. de; Knoop, M.

    2007-01-01

    In the Netherlands, 76%o of the working population sometimes or regularly works between midnight and 6 a.m. This percentage is comparable to those of other countries. Two of the most common and harmful problems associated with shift work are reduced quality of sleep and a reduced alertness while at

  1. Night-shift work and breast cancer risk in a cohort of Chinese women

    NARCIS (Netherlands)

    Pronk, A.; Ji, B.T.; Shu, X.O.; Xue, S.; Yang, G.; Li, H.L.; Rothman, N.; Gao, Y.T.; Zheng, W.; Chow, W.H.

    2010-01-01

    Shift work involving disruption of circadian rhythms has been classified as a probable cause of human cancer by the International Agency for Research on Cancer, based on limited epidemiologic evidence and abundant experimental evidence. The authors investigated this association in a population-based

  2. Long-term day-and-night rotating shift work poses a barrier to the normalization of alanine transaminase.

    Science.gov (United States)

    Lin, Yu-Cheng; Hsieh, I-Chun; Chen, Pau-Chung

    2014-05-01

    To evaluate the impact of day-and-night rotating shift work (RSW) on liver health, we performed a retrospective analysis of the association between long-term RSW exposure and the normalization of plasma alanine transaminase (ALT) levels over a five-year period. The data from physical examinations, blood tests, abdominal sonographic examinations, personal histories, and occupational records were collected from a cohort of workers in a semiconductor manufacturing company. The sample population was divided into three subgroups for analysis, according to self-reported shift work status over the five-year interval: persistent daytime workers, workers exposed intermittently to RSW (i-RSW), and workers exposed persistently to RSW (p-RSW). Records were analyzed for 1196 male workers with an initial mean age of 32.5 years (SD 6.0 years), of whom 821 (68.7%) were identified as rotating shift workers, including 374 i-RSW (31.3%) and 447 p-RSW workers (37.4%). At the beginning of the follow-up, 275 were found to have elevated ALT (e-ALT): 25.1% daytime workers, 23.0% i-RSW workers, and 21.3% p-RSW workers (p = 0.098). Of those with e-ALT at the beginning, 101 workers showed normalized serum ALT levels at the end of five-year follow-up: 40 (10.7%) of 375 daytime workers, 32 (8.6%) of 374 i-RSW workers, and 29 (6.5%) of 447 p-RSW workers (p = 0.016). Compared with the workers having persistent e-ALT at the end of follow-up, the workers normalized serum ALT levels had significantly lesser exposures to RSW during follow-up. By performing multivariate logistic regression analyses, and comparing with the persistent daytime co-workers, after controlling for confounding variables (age, occupational factors, educational levels, lifestyle factors, metabolic syndrome, hepatovirus infection, and fatty liver), analysis indicated that the workers exposed to p-RSW were 46% less likely (OR, 0.54; 95% CI, 0.30-0.95; p = 0.03) to attain normal ALT levels within a five-year interval

  3. Job burnout of night-shift nurses: a survey study%夜班护士工作倦怠调查分析

    Institute of Scientific and Technical Information of China (English)

    张秀茹; 李改云; 张爱玲; 乔合欣

    2011-01-01

    Objective To understand job burnout of night-shift nurses, and to analyze its relationship with night-shift frequency and shift length. Methods Seventy-eight night-shift nurses were investigated by filling out the Maslach Burnout Inventory-General Survey. Results The job burnout rate of night-shift nurses was 47. 4% , with mild burnout accounting for 75. 7%. The degree of burnout showed significant differences in nurses with different night-shift frequency and shift length(P<0. 05,P<0. 01). Seven items of the 10-item feelings and needs of night-shift nurses questionnaire scored ≥4 points, including decrease of sleep quality, hope for understanding and support from hospital managers, and acceptance of shift reform etc. Conclusion The incidence of job burnout is high in night-shift nurses, and nurses experience mild to moderate burnout. Two night shifts and more per week, shift length≥ 10 h are risk factors of severe burnout, and decrease of sleep quality is a prominent influencing factor. Managers should meet night-shift nurses needs, reform administration method, and reduce burnout of night-shift nurses.%目的 了解夜班护士工作倦怠情况,分析与夜班频次及持续时间的关系.方法 对78名夜班护士采用工作倦怠问卷进行调查.结果 夜班护士工作倦怠发生率为47.4%,其中轻度倦怠比例高(75.7%);不同夜班频次及工作时间倦怠程度比较,差异有统计学意义(P<0.05,P<0.01);夜班护士的感受及需求10个务目中均分≥4分的有夜班前后睡眠质量下降、希望得到医院的理解与支持及接受排班模式改革等7条.结论 夜班护士工作倦怠发生率较高,呈轻中度;夜班频次≥2次/周、夜班在班时间≥10 h倦怠程度较重;睡眠质量下降是最主要影响因素.管理者应重视夜班护士的诉求,改进管理方法,降低夜班护士工作倦怠感.

  4. Du crépuscule à l’aube From dusk to dawn: Finding compromises in nurses’ night shifts

    Directory of Open Access Journals (Sweden)

    Cathy Toupin

    2009-07-01

    Full Text Available Parmi les caractéristiques du travail susceptibles d’influencer les processus de régulation en lien avec l’âge et l’expérience, les questions d’horaires sont peu abordées. Nous pensons cependant qu’une composante importante, dans la construction et la mobilisation de l’expérience, s’élabore en relation avec le type d’horaire. L’objectif de cette recherche est de caractériser, au travers d’une étude menée auprès d’infirmières d’un service de pneumologie français, les stratégies mises en œuvre par les personnels de nuit ; et de proposer une approche dynamique de l’articulation entre horaires et activité de travail, en repérant comment cette articulation s’est forgée au cours du parcours professionnel avec l’expérience, comment ce processus est « lisible » dans l’activité d’aujourd’hui. Les infirmières se « prescrivent » des buts d’actions, élaborent une acception nocturne de leur tâche compte tenu de l’état des patients (par exemple, but visant à respecter le sommeil des patients, à apaiser leurs angoisses, de l’environnement désert des services (par exemple, but visant à consolider sa connaissance de l’état des patients, et de leur état psychophysiologique (par exemple, but visant à maintenir la vigilance. L’expérience du travail de nuit va leur permettre, d’une part de reconnaître ces buts, et d’identifier les contradictions pouvant en émerger ; d’autre part de compenser les difficultés et perturbations provoquées par ces tensions, via l’élaboration de compromis.Among the work characteristics that are likely to influence age and experience related adjustment processes, the issue of work schedules remains largely unexplored. We believe however that work schedules or shifts play an important part in building and mobilizing experience. This paper aims at characterizing the specific strategies implemented by night shift personnel based on a study

  5. Gênero e trabalho noturno: sono, cotidiano e vivências de quem troca a noite pelo dia Gender and night work: sleep, daily life, and the experience of night shift workers

    Directory of Open Access Journals (Sweden)

    Lúcia Rotenberg

    2001-06-01

    Full Text Available O artigo trata do impacto do trabalho noturno sob o enfoque de gênero, através de trabalho de campo em uma indústria que emprega homens e mulheres no turno noturno. O estudo se baseia em informações sobre os horários de sono por várias semanas, dados sócio-demográficos e relativos ao trabalho profissional e em entrevistas semi-estruturadas. A metodologia considera aspectos cronobiológicos do sono - essencialmente quantitativos - e elementos discursivos dos/as trabalhadores/as sobre suas vivências - masculinas e femininas - da troca do dia pela noite. Em que pese as questões de gênero e diferenças quanto ao cotidiano, a inversão de horários é sentida de forma intensa por homens e mulheres, permeando diversos aspectos da vida, como a saúde, o lazer, os estudos e as relações amorosas. A análise quantitativa do sono revelou efeitos mais prejudiciais do trabalho noturno sobre as mulheres, particularmente as que têm filhos. Tais padrões do sono se articularam com as expectativas que recaem sobre os gêneros, revelando a profunda interrelação entre o trabalho profissional e a vida doméstica como geradoras de impactos à saúde, o que ressalta o caráter essencial das relações de gênero na compreensão da realidade vivida pelos que trabalham em horários não usuais.This paper deals with the impact of night work from a gender perspective, through a field study at a factory employing men and women on the night shift. It is based on data for hours of sleep over the course of several weeks, socio-demographic data,, and job information, using a semi-structured interview. The methodology includes chronobiological aspects of sleep (mainly quantitative data and workers' discourse concerning gender-related experiences in the day-to-night switch. Despite gender issues and differences in daily life, the switch is perceived quite vividly by both men and women, permeating several aspects of life, like health, leisure, studies, and

  6. 12 hours after cerebral ischemia is the optimal time for bone marrow mesenchymal stem cell transplantation

    OpenAIRE

    Seyed Mojtaba Hosseini; Mohammad Farahmandnia; Zahra Razi; Somayeh Delavarifar; Benafsheh Shakibajahromi

    2015-01-01

    Cell therapy using stem cell transplantation against cerebral ischemia has been reported. However, it remains controversial regarding the optimal time for cell transplantation and the transplantation route. Rat models of cerebral ischemia were established by occlusion of the middle cerebral artery. At 1, 12 hours, 1, 3, 5 and 7 days after cerebral ischemia, bone marrow mesenchymal stem cells were injected via the tail vein. At 28 days after cerebral ischemia, rat neurological function was eva...

  7. 12 hours after cerebral ischemia is the optimal time for bone marrow mesenchymal stem cell transplantation

    Institute of Scientific and Technical Information of China (English)

    Seyed Mojtaba Hosseini; Mohammad Farahmandnia; Zahra Razi; Somayeh Delavarifar; Benafsheh Shakibajahromi

    2015-01-01

    Cell therapy using stem cell transplantation against cerebral ischemia has been reported. However, it remains controversial regarding the optimal time for cell transplantation and the transplantation route. Rat models of cerebral ischemia were established by occlusion of the middle cerebral artery. At 1, 12 hours, 1, 3, 5 and 7 days after cerebral ischemia, bone marrow mesenchymal stem cells were injected via the tail vein. At 28 days after cerebral ischemia, rat neurological function was evaluated using a 6-point grading scale and the pathological change of ischemic cerebral tissue was observed by hematoxylin-eosin staining. Under the lfuorescence microscope, the migration of bone marrow mesenchymal stem cells was examined by PKH labeling. Caspase-3 activity was measured using spectrophotometry. The optimal neurological function recovery, lowest degree of ischemic cerebral damage, greatest number of bone marrow mesenchymal stem cells migrating to peri-ischemic area, and lowest caspase-3 activity in the ischemic cerebral tissue were observed in rats that underwent bone marrow mesenchymal stem cell transplantation at 12 hours after cerebral ischemia. These ifndings suggest that 12 hours after cerebral ischemia is the optimal time for tail vein injection of bone marrow mesenchymal stem cell transplantation against cerebral ischemia, and the strongest neuroprotective effect of this cell therapy appears at this time.

  8. 12 hours after cerebral ischemia is the optimal time for bone marrow mesenchymal stem cell transplantation

    Directory of Open Access Journals (Sweden)

    Seyed Mojtaba Hosseini

    2015-01-01

    Full Text Available Cell therapy using stem cell transplantation against cerebral ischemia has been reported. However, it remains controversial regarding the optimal time for cell transplantation and the transplantation route. Rat models of cerebral ischemia were established by occlusion of the middle cerebral artery. At 1, 12 hours, 1, 3, 5 and 7 days after cerebral ischemia, bone marrow mesenchymal stem cells were injected via the tail vein. At 28 days after cerebral ischemia, rat neurological function was evaluated using a 6-point grading scale and the pathological change of ischemic cerebral tissue was observed by hematoxylin-eosin staining. Under the fluorescence microscope, the migration of bone marrow mesenchymal stem cells was examined by PKH labeling. Caspase-3 activity was measured using spectrophotometry. The optimal neurological function recovery, lowest degree of ischemic cerebral damage, greatest number of bone marrow mesenchymal stem cells migrating to peri-ischemic area, and lowest caspase-3 activity in the ischemic cerebral tissue were observed in rats that underwent bone marrow mesenchymal stem cell transplantation at 12 hours after cerebral ischemia. These findings suggest that 12 hours after cerebral ischemia is the optimal time for tail vein injection of bone marrow mesenchymal stem cell transplantation against cerebral ischemia, and the strongest neuroprotective effect of this cell therapy appears at this time.

  9. Night terror

    Science.gov (United States)

    Pavor nocturnus; Sleep terror disorder ... The cause is unknown, but night terrors may be triggered by: Fever Lack of sleep Periods of emotional tension , stress , or conflict Night terrors are most common in children ...

  10. Night-shift work increases morbidity of breast cancer and all-cause mortality: a meta-analysis of 16 prospective cohort studies.

    Science.gov (United States)

    Lin, Xiaoti; Chen, Weiyu; Wei, Fengqin; Ying, Mingang; Wei, Weidong; Xie, Xiaoming

    2015-11-01

    Night-shift work (NSW) has previously been related to incidents of breast cancer and all-cause mortality, but many published studies have reported inconclusive results. The aim of the present study was to quantify a potential dose-effect relationship between NSW and morbidity of breast cancer, and to evaluate the association between NSW and risk of all-cause mortality. The outcomes included NSW, morbidity of breast cancer, cardiovascular mortality, cancer-related mortality, and all-cause mortality. Sixteen investigations were included, involving 2,020,641 participants, 10,004 incident breast cancer cases, 7185 cancer-related deaths, 4820 cardiovascular end points, and 2480 all-cause mortalities. The summary risk ratio (RR) of incident breast cancer for an increase of NSW was 1.057 [95% confidence interval (CI) 1.014-1.102; test for heterogeneity p = 0.358, I(2) = 9.2%]. The combined RR (95% CI) of breast cancer risk for NSW vs daytime work was: 1.029 (0.969-1.093) in the 20-year exposure lengths. The overall RR was 1.089 (95% CI 1.016-1.166) in a fixed-effects model (test for heterogeneity p = 0.838, I(2) = 0%) comparing rotating NSW and day work. Night-shift work was associated with an increased risk of cardiovascular death (RR 1.027, 95% CI 1.001-1.053), and all-cause death 1.253 (95% CI 0.786-1.997). In summary, NSW increased the risk of breast cancer morbidity by: 1.9% for 5 years, 2.5% for 5-10 years, 7.4% for 10-20 years, and 8.8% for >20-years of NSW. Additionally, rotating NSW enhanced the morbidity of breast cancer by 8.9%. Moreover, NSW was associated with a 2.7% increase in cardiovascular death.

  11. 三甲医院护士夜班与职业倦怠的关系研究%Study on the relationship between hospital nurse night shift and occupation burnout in third-grade class A hospital

    Institute of Scientific and Technical Information of China (English)

    付光蕾; 陈伟菊

    2013-01-01

    目的 探讨三甲医院护士夜班与职业倦怠的关系.方法 采用一般资料调查问卷和护士职业倦怠量表对暨南大学附属第一医院的301名夜班护士进行调查评定.结果 (1)夜班护士的职业倦怠情况:处于无或极轻微、轻中度、重度倦怠的夜班护士分别占44.0%、37.5%、18.5%;(2)夜班强度与职业倦怠呈显著正相关和正向预测.结论 护士夜班与职业倦怠有密切的关系,夜班强度大更易引起护士职业倦怠.%Objective To investigate the relationship between the nurse night shift and job burnout in a third-grade class-A hospital. Method 301 night shift nurses from the first affiliated hospital of Jinan university were measured using the general information questionnaire and the nursing burnout scale (NBS). Result The survey shows that 44. 0% of the questioned nurses were not or very mild burnout, 37. 5% of that were moderate burnout, and 18. 5% of that were severe burnout. The strength of night shift and that of job burnout have significant positive correlation and positive prediction. Conclusion Nurses' night shift has a close relationship with job burnout, and the greater strength of nurse's night shift, the greater their job burnout.

  12. Relief of Dental Pain: A Controlled 12-Hour Comparison of Etodolac, Aspirin, and Placebo

    Science.gov (United States)

    Nelson, Sharon L.; Bergman, Stewart A.

    1985-01-01

    Single doses of the study drugs were evaluated for 12 hours by 201 out-patients reporting moderate or severe pain following oral surgery. The results of this double-blind study indicated that 50, 100, and 200 mg of etodolac as well as 650 mg of aspirin were significantly more effective than placebo. A dose-response relationship was found for the three doses of etodolac, which was significant for summed pain relief scores for up to 8 hours. In terms of total analgesic effect, etodolac 200 mg was significantly superior to placebo for 8 hours, while aspirin and the two lower doses of etodolac were similarly effective in the range of 3-6 hours postdrug. All doses showed a favorable onset of analgesia (½-1 hour). Etodolac 200 mg resulted in a duration of action which was approximately twice as long as aspirin's and also produced a peak pain relief which was significantly greater than the lower doses of etodolac and aspirin. All study medications were well tolerated with no reports of significant adverse side effects. No dose-related effects were observed with etodolac PMID:2934008

  13. White Nights

    OpenAIRE

    Shani, Michal

    2016-01-01

    “How can you sleep at night after you ruined my life?” Arthur, a veteran patient of mine, implored after receiving his test results. This essay recounts my experience as a physician in coping with an extremely anxious patient, its influence on me, and some of my reflections on the ensuing white nights.

  14. Night Wind - Deliverable D.3.2 main simulation report; Grid architecture for wind power production with energy storage through load shifting in refrigerated warehouses

    Energy Technology Data Exchange (ETDEWEB)

    Cronin, Tom; Bindner, Henrik; Zong, Yi

    2008-11-15

    This report represents Deliverable D.3.2 of Work Package 3 in the Night Wind project. The aim of this Work Package was to simulate a cold store (or number of cold stores) within a power system where there is a high degree of wind power penetration. The Night Wind Control System, developed as part of Work Package 5, was to be integrated into the simulations so that the wind power could be 'stored' in the cold store with maximum benefit to the electrical network, utility or cold store owner. To this end, the following have been accomplished: 1) The Night Wind concept has been described in terms of demand side management. 2) Input requirements and data have been specified and collected. Measured data from the existing cold store facility of Partner Logistics has been analysed. 3) Component models for the simulations (including the cold store model itself) have been developed for the simulation platform, IPSYS. 4) The Night Wind Control System (NWCS) from Work Package 5 has been developed so that it finishes computations within two minutes. 5) Controllers including the NWCS) have been operated with the cold store model within IPSYS. 6) Simulations have been performed with the cold store model and an increasing penetration of wind power. This report presents the results of the work undertaken in Work Package 3 which would have benefited from the additional time requested at the project meeting in March 2008, however, this extension of time was not granted. Nevertheless, the work that was possible is considered significantly complete, although it is acknowledged that there has been a delay in the presentation of this report. It should be noted that it was not possible to address the new aspects of Task 3.7 'Verification of simulation results' as there was no implementation of the night wind concept at the demonstration site (Task 7). Verification of the simulation of the present system has, naturally, been carried out and described in this report. (ln)

  15. 夜间片区组长工作岗位的设立及实践%The post setting and work mode of team leader at night shift

    Institute of Scientific and Technical Information of China (English)

    于江; 马靓; 鲍华; 李中鹏

    2012-01-01

    Objective To explore the necessity and feasibility of the post setting of team leader at night shift. Methods The 21 nursing units which has two persons on duty in the morning and evening were divided into three areas. A team leader was arranged for each area to instruct and supervise the nursing work at night shift. Results The responsibilities of team leader were supervising the quality of nursing,directing and participating in the rescue mission,coping with emergencies,helping difficult procedures, completing double checks,substituting the person on duty, dissolving nursing disputes, sharing routine work, coordinating the materials and facilities. Conclusion The post setting of team leader at night shift can effectively prevent nursing flaws,improve nursing links,save human resources and relieve work pressure of nurses on duty at night shift.%目的 探讨夜间片区组长工作岗位设立的必要性和可行性.方法 将全院21个仅在晨晚间实施双班的护理单元划分为3个片区,每个片区设1名组长督查、指导和协助夜间的护理工作.结果 片区组长的工作内容集中在督查护理质量、指导参与抢救、参加突发事件应急、协助困难操作、完成双人核对、顶替一线班、解决护患矛盾、分担常规工作和物品设备协调等方面.结论设立夜间片区组长工作岗位,能有效地杜绝护理漏洞、完善护理环节、节约护理人力、缓解一线夜班护士的工作压力.

  16. Correlation of 2 hour, 4 hour, 8 hour and 12 hour urine protein with 24 hour urinary protein in preeclampsia.

    Directory of Open Access Journals (Sweden)

    Savita Rani Singhal

    2014-09-01

    Full Text Available To find shortest and reliable time period of urine collection for determination of proteinuria.It is a prospective study carried out on 125 pregnant women with preeclampsia after 20 weeks of gestation having urine albumin >1 using dipstick test. Urine was collected in five different time intervals in colors labeled containers with the assistance of nursing staff; the total collection time was 24 hours. Total urine protein of two-hour, four-hour, eight-hour, 12-hour and 24-hour urine was measured and compared with 24-hour collection. Data was analyzed using the Pearson correlation coefficient.There was significant correlation (p value < 0.01 in two, four, eight and 12-hour urine protein with 24-urine protein, with correlation coefficient of 0.97, 0.97, 0.96 and 0.97, respectively. When a cut off value of 25 mg, 50 mg. 100 mg, and 150 mg for urine protein were used for 2-hour, 4-hours, 8-hour and 12-hour urine collection, a sensitivity of 92.45%, 95.28%, 91.51%, and 96.23% and a specificity of 68.42%, 94.74%, 84.21% and 84.21% were obtained, respectively.Two-hour urine proteins can be used for assessment of proteinuria in preeclampsia instead of gold standard 24-hour urine collection for early diagnosis and better patient compliance.

  17. Effectiveness of Percutaneous Coronary Intervention within 12 Hours to 28 Days of ST-Elevation Myocardial Infarction in a Real-World Chinese Population

    OpenAIRE

    Xingli Wu; Dingyou Yang; Yusheng Zhao; Caiyi Lu; Yu Wang

    2013-01-01

    OBJECTIVES: Percutaneous coronary intervention( PCI) for ST-elevation myocardial infarction (STEMI) has been widely accepted for patient who come within 12 hours, but for those who come to the hospital late (12 hours to 28 days) the long-term data and possible predictors are limited regarding 'hard' endpoints in 'real world'. METHODS: The registry data of all 5523 consecutive patients admitted due to an incident STEMI (12 hours to 28 days) in our center were analyzed. Patients were divided in...

  18. [Night workers and plasmatic cortisol].

    Science.gov (United States)

    Palermo, P; Rosati, M V; Ciarrocca, M; Nicassio, P; Piccoli, F; Cerratti, D; Anzani, M F; Tomei, G; Perugi, F; Monti, C; Palitti, T; Tomao, E; Caciari, T; Tomei, F

    2007-01-01

    The aim of the study is to evaluate whether occupational exposure to night work could cause alterations in the levels of plasmatic cortisol. The interest toward this argument arises form several studies in scientific literature referring the presence of an alteration in the synthesis and release of cortisol in workers exposed to night work. We studied a population of workers employed in night security service and monitoring service of alarm systems in different museums compared to a control group not performing shift-work and/or night work. The exposed and control subjects were compared by age, length of service, smoking habit (n. cigarettes per day), habitual consumption of alcoholic drinks (n. glass of wine/beer per day). We evaluated the levels of plasmatic cortisol on 50 workers exposed to night work, all males of whom 30 smokers and 20 non-smokers and on 50 controls of whom 30 smokers and 20 non-smokers.

  19. Vision - night blindness

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/003039.htm Vision - night blindness To use the sharing features on ... page, please enable JavaScript. Night blindness is poor vision at night or in dim light. Considerations Night ...

  20. Effect of the implementation of the reinforced night shift and the general resident nurse on duty system on relieving the stress of night nurse in the department of obstetrics and gynaecology%实行夜班加强辅助班与护理住院总值班对妇产科夜班护士压力的影响

    Institute of Scientific and Technical Information of China (English)

    官美君; 彭继蓉; 刘丽娟

    2013-01-01

    Objective To investigate and discuss the influence of the implementation of the reinforced night shift and the general resident nurse on duty system on relieving the stress of night nurse in the department of obstetrics and gynaecology.Methods A total of 48 first-line nurses on duty at night were selected and their stress condition were investigated with Nurse' s Work Pressure Sources Scale and compared between before and after the implementation of the reinforced night shift and the general resident nurse on duty system.Results After the implementation,the stress scores of nurse in nursing care for patients,in the workload and time allocation and in the nursing profession and nursing work weres lower than those before the implementation [(1.91 ±0.32) vs (3.35 ±0.76),(1.73 ±0.48) vs (3.35 ±0.47),(1.48 ±0.61) vs (2.92 ±0.67);respectively],these differences were statistically significant (t=2.44,2.35,2.25,respectively;P < 0.05).There were no statistically significant differences regarding the problems of management and interpersonal relationship and the problems of work environment and resources between before and after implementation (P >0.05).The stressors of night shift nurses in the top 5 were all reduced after the implementation of the reinforced night shift and the general resident nurse on duty system,and the differences were statistically significant between after and before the implementation (P < 0.01).Conclusions The implementation of the reinforced night shift and the general resident nurse on duty system can relieve the stress of first-line nurses on duty at night in the department of obstetrics and gynaecology,which can ensure the quality and safety of nursing.%目的 探讨通过实行夜班加强辅助班及护理二线住院总查房制度,对减轻妇产科夜班护士压力的影响.方法 通过对夜班实行加强辅助班及开展夜间护理住院总值班制度,实施前后采用护士工作压力量表对48名一线夜班护士

  1. Providing Housing, Food and Medical Support for 25,000 Katrina Evacuees with 12 Hours Notice: The Harris County Medical Support of the Superdome Evacuees

    Science.gov (United States)

    Hamilton, Douglas; Smart, Kieran; Gavagan, Tom

    2006-01-01

    Hurricane Katrina was responsible for trapping 25,000 people in the New Orleans Superdome and isolating many others throughout Louisiana and Mississippi. The transport of these evacuees to the Reliant Park (Houston, Texas) used 500 buses each containing about 55 people. Processing the arriving evacuees included addressing their health status and medical needs as follows: an initial triage at disembarkation, a secondary triage in the Reliant Astrodome and Center, and definitive clinical care in the Reliant Arena "Katrina" Clinic. Baylor College of Medicine (BCM) physicians boarded buses and identified the sickest for emergency transport to Harris County Hospital District (HCHD) hospitals. BCM departments represented included pediatrics, family and community medicine, internal medicine, radiology, obstetrics and gynecology, orthopedics, surgery, and psychiatry. Astrodome and Center triage was managed by BCM physicians and staffed by HCHD Nurses and volunteers from Texas and beyond. The Reliant Astrodome, Center and Arena reached peak headcounts of 15,000,4500, and 2500, respectively Most evacuees visiting the triage sites in the Astrodome and Center were treated using "over-the-counter" medications with the remaining being transported to the "Katrina" clinic. The clinic was equipped with a lab, pharmacy, digital X-ray, and ultrasound machines in addition to electronic patient records created using 80 computer terminals. The Katrina clinic saw more than 15,000 patients during 15 days of operations (2,000 on the first full day), administered 10,000 tetanus shots, and filled thousands of prescriptions. At the peak of operations, the clinic saw 150 patients/hour with 25 physicians scheduled for each 12-hour shift. Approximately 900 people were transported to hospital emergency rooms. Within 3 weeks of arriving at the Reliant Park facilities, more than 90% of the families found permanent housing, enrolled children in schools, and found work. Using data obtained from

  2. Study on factors affecting the quality of life for nurses working in night shifts%夜班护理人员生活质量影响因素研究

    Institute of Scientific and Technical Information of China (English)

    王倩倩; 王建华

    2011-01-01

    Objective To explore the situation of quality of life ( QOL ) of nurses working in night shifts and the major factors influencing the QOL, and to provide scientific basis of the further effective intervention for the quality of life. Methods The nurses working in night shift were sampled randomly in Grade 3A-hospitals of Tianjin, and investigated using WHO Quality of Life-BREF Scale. Results Three hundred eighty five questionnaires were collected from 398 questionnaires. The average score of subjective QOL perception was 2.90 (the full score is 5), subjective health perception was 2.64 (the full score is 5). The score of physical domain of QOL was 13.21 ±2.18; psychological domain of QOL was 13.38 ±2.28; social domain of QOL was 14.71±2.32; environmental domain of QOL was 11.36±2.31, all of which were significantly lower than norm value (P<0.01). The results analyzed by ordinal logistic regression showed that the factors affecting physical domain of QOL were years of working experience, sleep time, gastrointestinal disorders, family harmony status and regular diet; the factors affecting psychological domain of QOL were family harmony status and gastrointestinal disorders; the factors affecting social domain of QOL were the nature of nursing work and family harmony status; the factors affecting environmental domain of QOL were job title, sleep time, gastrointestinal disorders and regular diet. Conclusion The QOL of nurses working in night shifts is lower than that of general people. The corresponding measures should be taken to raise the quality of life of nurses in night shifts.%目的 探讨夜班护理人员生活质量及其影响因素,为制定提高夜班护理人员生活质量的干预措施提供科学依据.方法 采用整群随机抽样的方法抽取某市三级甲等医院全体夜班护理人员做为调查对象,用世界卫生组织编制的生活质量测定量表(WHOQOL-BREF)中文版进行问卷调查,测定并评

  3. Influencia de los turnos de trabajo y las guardias nocturnas en la aparición del Síndrome de Burnout en médicos y enfermeras Influence of shift work and night shifts in the onset of the Burnout Syndrome in doctors and nurses

    Directory of Open Access Journals (Sweden)

    Ambar Deschamps Perdomo

    2011-09-01

    Full Text Available La sociedad actual que funciona 24 horas al día, obliga a las organizaciones y en consecuencia a sus empleados a someterse a horarios de trabajo que van en contra del ritmo natural de la vida. El horario por turno y las guardias, fuera de las horas normales del día, es un tema que cobra importancia, ya que son muchas las implicaciones que esto trae como consecuencia en la salud física y mental de quienes lo realizan. Objetivo: Analizar la evidencia científica existente la influencia de los turnos de trabajo y las guardias nocturnas en la aparición del síndrome de Burnout en médicos y enfermeras. Método: Varias bases de datos han sido analizadas (Medline, Pubmed, Lilacs, Cochrane, con descriptores específicos y según criterios de inclusión se ha obtenido la bibliografía. Resultados: Se localizaron 40 artículos. De los cuales, 16 (40% corresponden a estudios en enfermeras y 24 (60% sobre médicos, principalmente médicos en formación. Parece existir una relación de la influencia de los turnos de trabajo y las guardias nocturnas con la aparición del síndrome de Burnout, en médicos y enfermeras. Conclusión: La identificación de los factores de riesgo psicosocial a los que pueden estar expuestos los médicos permitirá adoptar medidas preventivas, que pueden ser útiles para mejorar la salud y la calidad de vida de este colectivo profesional.Society today works 24 hours a day, forcing organizations and their employees to submit work schedules that go against the natural rhythm of life. Shift work and night work, is an issue that is becoming important, as there are important consequences in physical and mental health of those who work this way. Objective: Analyze the existing scientific evidence of the influence of shift work and night shifts in the onset of burnout syndrome among physicians and nurses. Method: Several databases have been reviewed (Medline, Pubmed, Lilacs, Cochrane, with specific descriptors and bibliography has

  4. 夜班护士WHOQOL-BREF量表测试及信、效度评价%Validity and reliability of WHOQOL-BREF Scale among nurses with night shift

    Institute of Scientific and Technical Information of China (English)

    王倩倩; 王建华

    2013-01-01

    目的 对中文版世界卫生组织生存质量测定量表简表(WHOQOL-BREF)应用于夜班护士健康生命质量评价时的信度和效度进行验证.方法 采用整群随机抽样方法对在天津市1所三级甲等医院抽取的385名夜班护士进行中文版WHOQOL-BREF问卷调查;采用分半信度、Cronbach's α系数和各领域得分与总分间的相关系数评价量表的信度,采用内容效度、区分效度、结构效度和判别效度评价量表的效度.结果 中文版WHOQOL-BREF量表的分半信度和Cronbach's α系数分别为0.77和0.91;生理、心理、社会关系和环境4个领域的分半信度为0.61 ~0.72,Cronbach's α系数为0.75 ~0.78,各领域得分与总分的相关系数为0.72 ~0.84(P <0.001),量表的内部一致性较好;除生理领域外,每个条目与所属领域总分的相关系数均>0.50,且高于该条目与其他领域的相关系数(P <0.001),量表具有较好的内容效度和区分效度;因子分析结果表明,24个条目在提取的6个公因子中的分布与量表的理论结构假设大体一致,方差累积贡献率为60.76%,量表具有较好的结构效度;不同年龄、工作年限、文化程度夜班护士生理和心理领域得分不同(P<0.01),量表具有良好的判别效度.结论 中文版WHOQOL-BREF量表具有较好的信度和效度,适用于夜班护士健康生命质量的评价.%Objective To evaluate the validity and reliability of World Health Organization Quality of Life Scale-Abbreviatd Version (WHOQOL-BREF) among nurses with night shift. Methods Cluster random sampling method was used to select one grade A class Ⅲ-hospital in Tianjin city and all the nurses with night shift in the hospital (385 nurses in all) were investigated with WHOQOL-BREF. Split-half reliability, Cronbach's α coefficient and the correlation coefficient between score of domain and total score were used to evaluate the reliability of the scale; content validity, discriminated

  5. Study in factors influencing marital quality of night- shift nurses in general hospitals%综合医院夜班护士婚姻质量的影响因素研究

    Institute of Scientific and Technical Information of China (English)

    李晓雯; 袁欣; 谷金君

    2009-01-01

    Objective To discuss the effect of night- shift work on marital quality, and analyze the relations between the marital quality and related factors in order to explore the method to tackle the marital crisis of night- shift nurses. Methods 500 nurses were selected in general hospitals of Liaoeheng above county-level, each tested nurse filled out marital quality inventory, general well-being scale,social support scale and Eysenck personality questionnaire(EPQ), and withdrew 416 copies(effective rate 90.83%) of ef-fective questionnaire after filling independently. Results (1)There were significant difference in the var-ious scores of marital quality between the nurses and the norm. (2) The marital quality was correlated with general well-being, social support and psychoticism, neuroticism and lying degree of EPQ.(3) Multivariable linear regression which took marital quality as dependent variable ,the variables which entered the equation were age of marriage, social support, psychoticism,subjective well- being,lying degree and objective support. Conclusions (1) The marital quality of night-shift nurses was low. (2)Marital quality was positively cor-relat-ed with subjective well-being, social support and lying degree, negatively correlated with neuroticism and psychoticism. (3) Marital quality were influenced by time of marriage, social support, psycholepsy, sub-jec-tive well-being, lying degree and objective support, among which social support has a great influence.%目的 探讨护士倒夜班对婚姻质量的影响,分析婚姻质量与相关因素之间的关系,为寻求解决倒夜班护士婚姻危机的方法提供科学依据.方法 采用调查问卷的方法,以聊城市县级以上综合医院从事临床一线的护理人员为研究对象,采用整群抽样的方法,发放问卷500份,回收458份,回收率91.6%,其中有效问卷416份,有效率90.83%.调查工具采用婚姻质量问卷、总体幸福感量表、社会支

  6. Family Reading Night

    Science.gov (United States)

    Hutchins, Darcy; Greenfeld, Marsha; Epstein, Joyce

    2007-01-01

    This book offers clear and practical guidelines to help engage families in student success. It shows families how to conduct a successful Family Reading Night at their school. Family Night themes include Scary Stories, Books We Love, Reading Olympics, Dr. Seuss, and other themes. Family reading nights invite parents to come to school with their…

  7. Nightmares and Night Terrors

    Science.gov (United States)

    ... nightmares and night terrors when they are adults. Causes & Risk Factors When should I worry about nightmares ... shout or shake your child. Night terrors and sleepwalking require that you protect your child during sleep. ... Nightmares and Disorders of Dreaming by JF Pagel, MD (American Family ...

  8. Present situation analysis of night-shift fee and allowance paid of nurses of provincial and municipal hospital in Henan province%河南省省市级医院名护士夜班薪酬状况调查及分析

    Institute of Scientific and Technical Information of China (English)

    孙明明; 张艳; 孙五美; 黄焕香; 韩二环; 张建阁

    2015-01-01

    目的:了解部分临床护士的夜班薪酬及护龄津贴等基本薪酬发放现状,为相关部门提高护士薪酬待遇及工作价值提供参考依据。方法采用自设的护士夜班薪酬状况调查表对河南省18个地市22所省市级医院的956名护士进行调查及分析。结果71.9%(687/956)的调查对象认为所在医院人力资源配置尚未达标,护士劳动强度大;60.06%(574/956)的调查对象每周值夜班数为2~3个;86.21%(824/956)的调查对象认为劳动强度轻度高或者比较高;16.1%(153/956)的调查对象小夜班费为0;52.1%(498/956)的调查对象大夜班费用为1~10元;90.49%(865/956)的调查对象认为夜班费不合理;26.31%(252/956)的调查对象没有享受夜班津贴。结论医院管理者应重视优化人力资源管理,改善护士夜班轮值状况;提高护士夜班薪酬待遇,体现护士工作价值。%Objective To understand the status of basic compensation for nurses′night-shift and nursing age allowance, and provide reference basis for government to make policy. Methods A total of 956 nurses of 22 hospitals from 18 cities in Henan were investigated and analyzed by the Nurse Night-shift Compensation Status Questionnaire. Results The human resources allocation of 71.9% (687/956) respondents was not up to standard. The nurses were under labor intensity. 60.06%(574/956) nurses needed to go to the night-shift for 2-3 times every week. 86.21%(824/956) nurses thought the intensity of labor was mild light or relatively high. The swing night shift compensation of 16.1% (153/956) nurses was none. The graveyard shift compensation of 52.1%(498/956) nurses was 1 to 10 yuan. 90.49%(865/956) nurses thought inked the compensation for night shift was unreasonable. 26.31% (252/956) nurses didn′t receive any payment for the night shift. Conclusions The managers in hospital should attach importance to the legitimate rights and interests of the

  9. Comparison of Celsior and Perfadex lung preservation solutions in rat lungs subjected to 6 and 12 hours of ischemia using an ex-vivo lung perfusion system

    Directory of Open Access Journals (Sweden)

    Arteiro Queiroz Menezes

    2012-11-01

    Full Text Available OBJECTIVE: This study evaluated the performance of lungs that were preserved with different solutions (Celsior, Perfadex or saline in an ex vivo rat lung perfusion system. METHODS: Sixty Wistar rats were anesthetized, anticoagulated and randomized into three groups (n = 20. The rats were subjected to antegrade perfusion via the pulmonary artery with Perfadex, Celsior, or saline, followed by 6 or 12 hours of ischemia (4ºC, n = 10 in each group. Respiratory mechanics, gas exchange and hemodynamics were measured at 10-minute intervals during the reperfusion of heart-lung blocks in an ex vivo system (IL2-Isolated Perfused Rat or Guinea Pig Lung System, Harvard Apparatus, Holliston, Massachusetts, USA; Hugo Sachs Elektronik, Germany for 60 minutes. The lungs were prepared for histopathology and evaluated for edema following reperfusion. Group comparisons were performed using ANOVA and the Kruskal-Wallis test with a 5% level of significance. RESULTS: Gas exchange was not significantly different between lungs perfused with either Perfadex or Celsior at the same ischemic times, but it was very low in lungs that were preserved with saline. Airway resistance was greater in the lungs that were preserved for 12 hours. Celsior lungs that were preserved for 6 and 12 hours exhibited lower airway resistance (p = 0.01 compared to Perfadex lungs. Pulmonary artery pressure was not different between the groups, and no significant differences in histopathology and apoptosis were observed between the groups. CONCLUSIONS: Lungs that were preserved with Celsior or Perfadex exhibited similar gas exchange and histopathological findings. Airway resistance was slightly lower in the Celsior-preserved lungs compared with the Perfadex-preserved lungs.

  10. PREDICTION OF OUTCOME OF PAEDIATRIC PATIENTS BY VALIDATING PRISM III SCORING WITHIN 12 HOURS AND PRISM III AT 72-84 HOURS AFTER INITIATION OF THE TREATMENT

    OpenAIRE

    Sonica

    2014-01-01

    `BACKGROUND: One of the scoring systems in Pediatric Intensive Care is the PRISM III (PAEDITRIC RISK OF MORTALITY III) which is an updated version of PRISM. Study was done at time point 72 hrs of initiation of therapy as well in a view that it will better prognosticate the outcome. AIMS: 1. To find out PRISM III within 1st 12 hours of admission and at 72-84 hours of admission, 2. To evaluate any correlation between PRISM III and mortality, 4.To find out correlation between...

  11. Night Terrors (For Parents)

    Science.gov (United States)

    ... a family member who also experienced them or sleepwalking (a similar type of sleep disturbance). Night terrors ... For Kids For Parents MORE ON THIS TOPIC Sleepwalking Should I Be Worried About My Child's Nightmares? ...

  12. Night Eating Disorders

    OpenAIRE

    Deniz Tuncel; Fatma Özlem Orhan

    2009-01-01

    Hunger is an awakening related biological impulse. The relationship between hunger and sleep is moderated by the control of homeostatic and circadian rhytms of the body. Abnormal eating behavior during sleep period could result from different causes. Abnormal eating during the main sleep period has been categorized as either night eating syndrome or sleep related eating disorder. Night eating syndrome (NES) is an eating disorder characterised by the clinical features of morning anorexia, even...

  13. History of the Night

    CERN Document Server

    CERN. Geneva

    2016-01-01

    The definition of the night, as the period between sunset and sunrise, is consistent and unalterable, regardless of culture and time. However the perception of the night and its economic, social, and cultural roles are subject to change. Which parameters determine these changes? What can we learn by studying them about the specific character of a culture? Why do people experience the night in different ways in different historical periods and how did this affect their lives? How do references to nocturnal activities in historical sources (works of art, narratives) reveal what the artists/authors wish to communicate to their audiences? Can the night be a meaningful subject of historical and archaeological enquiry? A study of the source material in the Greek world (ca. 400 BC-ca. AD 400) shows a continuous effort to colonize the night with activities of the day, to make the night safer, more productive, more rational, more efficient. The main motors for this change were social developments and religion, no...

  14. Sleep, ageing and night work

    Directory of Open Access Journals (Sweden)

    M.L.N. Pires

    2009-09-01

    Full Text Available Studies have shown that the frequency or worsening of sleep disorders tends to increase with age and that the ability to perform circadian adjustments tends to decrease in individuals who work the night shift. This condition can cause consequences such as excessive sleepiness, which are often a factor in accidents that occur at work. The present study investigated the effects of age on the daytime and nighttime sleep patterns using polysomnography (PSG of long-haul bus drivers working fixed night or day shifts. A total of 124 drivers, free of sleep disorders and grouped according to age (<45 years, N = 85, and ≥45 years, N = 39 and PSG timing (daytime (D PSG, N = 60; nighttime (N PSG, N = 64 participated in the study. We observed a significant effect of bedtime (D vs N and found that the length of daytime sleep was shorter [D: <45 years (336.10 ± 73.75 min vs N: <45 years (398 ± 78.79 min and D: ≥45 years (346.57 ± 43.17 min vs N: ≥45 years (386.44 ± 52.92 min; P ≤ 0.05]. Daytime sleep was less efficient compared to nighttime sleep [D: <45 years (78.86 ± 13.30% vs N: <45 years (86.45 ± 9.77% and D: ≥45 years (79.89 ± 9.45% and N: ≥45 years (83.13 ± 9.13%; P ≤ 0.05]. An effect of age was observed for rapid eye movement sleep [D: <45 years (18.05 ± 6.12% vs D: ≥45 years (15.48 ± 7.11% and N: <45 years (23.88 ± 6.75% vs N: ≥45 years (20.77 ± 5.64%; P ≤ 0.05], which was greater in younger drivers. These findings are inconsistent with the notion that older night workers are more adversely affected than younger night workers by the challenge of attempting to rest during the day.

  15. A Midsummer Night's Science

    CERN Multimedia

    2001-01-01

    Last year, the first Science Night attracted nearly 1500 people. Dipping into history for the space of one night? This is the idea of Geneva's Museum of the History of Science, which is organizing its second Science Night, on 7 and 8 July, on the history of science. The first such event, held last year, was a considerable success with almost 15 000 visitors. The second Science Night, to be held in the magnificent setting of the Perle du Lac Park in Geneva, promises to be a winner too. By making science retell its own history, this major event is intended to show how every scientific and technical breakthrough is the culmination of a long period of growth that began hundreds of years in the past. Dozens of activities and events are included in this programme of time travel: visitors can study the night sky through telescopes and see what Galileo first observed, and then go to see a play on the life of the Italian scientist. Another play, commissioned specially for the occasion, will honour Geneva botanist De ...

  16. Pre-Seismic Electrical Signals (SES) generation and their relation to the lithospheric tidal oscillations K2, S2, M1 (T = 12hours / 14 days)

    CERN Document Server

    Thanassoulas, Constantine

    2008-01-01

    It is postulated that the preseismic electric signals (SES) are generated by the piezoelectric mechanism applied on small rock grains - blocks during their stress load until fracturing. Specifically, the square electric train pulses are generated by the combination of a stress increase phase which generates a positive piezostimulated polarized current pulse (PSPC) followed, in a short time, by the stress decrease phase at fracturing level which generates a negative piezostimulated depolarized current pulse (PSDC). Moreover, it is shown that the SES signals are closely related to the tidally triggered lithospheric stress maxima - minima. Examples of SES signals are presented in relation to the tidally triggered lithospheric oscillation (k2, S2, M1) of T = 12hours / 14 days, while some comments are made as far as it concerns their use in short-term earthquake prediction.

  17. Night Eating Disorders

    Directory of Open Access Journals (Sweden)

    Deniz Tuncel

    2009-08-01

    Full Text Available Hunger is an awakening related biological impulse. The relationship between hunger and sleep is moderated by the control of homeostatic and circadian rhytms of the body. Abnormal eating behavior during sleep period could result from different causes. Abnormal eating during the main sleep period has been categorized as either night eating syndrome or sleep related eating disorder. Night eating syndrome (NES is an eating disorder characterised by the clinical features of morning anorexia, evening hyperphagia, and insomnia with awakenings followed by nocturnal food ingestion. Recently night eating syndrome, conceptualized as a delayed circadian intake of food. Sleep-related eating disorder, thought to represent a parasomnia and as such included within the revised International Classification of Sleep Disorders (ICSD-2, and characterized by nocturnal partial arousals associated with recurrent episodes of involuntary food consumption and altered levels of consciousness. Whether, however, sleep-related eating disorder and night eating syndrome represent different diseases or are part of a continuum is still debated. This review summarizes their characteristics, treatment outcomes and differences between them.

  18. A Night's Sleep, Ultracheap

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ You tote your own luggage, the bed's a bit stiff, and the decor in the spartan rooms and lobby is reminiscent of a college dorm. Oh-and you can't buy a beer. But for $22 a night,the indi One Hotel is one heck of a bargain.

  19. A night sky model.

    Science.gov (United States)

    Erpylev, N. P.; Smirnov, M. A.; Bagrov, A. V.

    A night sky model is proposed. It includes different components of light polution, such as solar twilight, moon scattered light, zodiacal light, Milky Way, air glow and artificial light pollution. The model is designed for calculating the efficiency of astronomical installations.

  20. A Study on Translation Shifts in the Translation of The Lantern Festival Night-to the Tune of Green Jade Table%《青玉案·元夕》英译中的翻译转换研究

    Institute of Scientific and Technical Information of China (English)

    李若祺

    2015-01-01

    由于不同的语言系统,加上社会、文化等方面的不同,英汉互译中可能出现无法一一对应的情况.那么在翻译实践中,译者不仅熟练掌握两种语言、文化等背景,更要懂得语言结构和层级之间的相互转换.该文以卡特福德的翻译转换理论为指导,逐句分析许渊冲英译的《青玉案·元夕》中翻译转换的实现情况.结果发现由于英汉语言结构和表达习惯的不同,古文英译时转换的情况非常多,这也说明了翻译转换理论在古文英译和翻译评价中具有适用性.%Due to different language systems and various difference in societies and cultures, they may be not always in one-to-one correspondence in the translation between English and Chinese. Thus in translation practice,translators should not only have a good master of the two languages, but also have a good awareness of the shifts among different language structures and categories. Under the Translation Shift Theory, the article attempts to explore the realization of translation shits in Xu Yuanchong 's translation of a classic Chinese ci-poem. The result is that due to different language structures and expression habits, there are many shifts in the translating of Classical Chinese to English. This also proves that the Translation Shift Theory is valid in translation practice.

  1. Review of night vision metrology

    Science.gov (United States)

    Chrzanowski, K.

    2015-06-01

    A review of night vision metrology is presented in this paper. A set of reasons that create a rather chaotic metrologic situation on night vision market is presented. It is shown that there has been made a little progress in night vision metrology during last decades in spite of a big progress in night vision technology at the same period of time. It is concluded that such a big discrep- ancy between metrology development level and technology development can be an obstacle in the further development of night vision technology.

  2. [Shift work and risk of cancer and coronary heart diseases].

    Science.gov (United States)

    Hansen, Johnni; Lassen, Christina Funch

    2014-01-20

    Shift and night work are among the most frequent occupational exposures. Such work schedules involve exposure to light-at-night, which may reduce normal nocturnal melatonin production, create circadian rhythm disruption, sleep deprivation and unhealthy lifestyle. There is strong experimental evidence that light-at-night and circadian disruption may increase the risk of cancer and coronary heart diseases. There is emerging, but limited epidemiologic evidence that night shift work may increase breast cancer and certain cardiovascular diseases. PMID:24629681

  3. Why things go bump in the night

    Energy Technology Data Exchange (ETDEWEB)

    Shapiro, D.E.

    1996-09-01

    Visual processing leads to false security. Professor Emeritus Herschel W. Leibowitz of Pennsylvania State University pointed out some important facts about night-time navigation-vehicular or other - in a 1995 Distinguished Scientific Award Address, printed last spring in American Psychologist. People are often more tired at night. If they are working overtime or doing shift work, their systems are probably off-kilter. Unquestionably, they cannot see as well at night-night myopia has been investigated since the 18th century. The problem is this: with those factors so obvious, why do people fail to compensate for them by changing their driving habits enough to balance out the risks? First, researchers poking around in, among other places, the brains of hamsters, discovered that there are two functionally separate visual processing systems. The orientation and guidance system is much less sensitive to the amount of light than is the focal systems; the latter is the system with which we recognize objects. That means a worker can securely find his or her way to the substation entrance form the parking lot, despite low light, but can easily stumble in an unexpected pot-hole on the way. Or a driver can stick to his lane, with the familiar help of feedback from the steering wheel, but be too slow to identify objects in the road.

  4. ATLAS Nightly Build System Upgrade

    CERN Document Server

    Dimitrov, G; The ATLAS collaboration; Simmons, B; Undrus, A

    2014-01-01

    The ATLAS Nightly Build System is a facility for automatic production of software releases. Being the major component of ATLAS software infrastructure, it supports more than 50 multi-platform branches of nightly releases and provides ample opportunities for testing new packages, for verifying patches to existing software, and for migrating to new platforms and compilers. The Nightly System testing framework runs several hundred integration tests of different granularity and purpose. The nightly releases are distributed and validated, and some are transformed into stable releases used for data processing worldwide. The first LHC long shutdown (2013-2015) activities will elicit increased load on the Nightly System as additional releases and builds are needed to exploit new programming techniques, languages, and profiling tools. This paper describes the plan of the ATLAS Nightly Build System Long Shutdown upgrade. It brings modern database and web technologies into the Nightly System, improves monitoring of nigh...

  5. ATLAS Nightly Build System Upgrade

    CERN Document Server

    Dimitrov, G; The ATLAS collaboration; Simmons, B; Undrus, A

    2013-01-01

    The ATLAS Nightly Build System is a facility for automatic production of software releases. Being the major component of ATLAS software infrastructure, it supports more than 50 multi-platform branches of nightly releases and provides ample opportunities for testing new packages, for verifying patches to existing software, and for migrating to new platforms and compilers. The Nightly System testing framework runs several hundred integration tests of different granularity and purpose. The nightly releases are distributed and validated, and some are transformed into stable releases used for data processing worldwide. The first LHC long shutdown (2013-2015) activities will elicit increased load on the Nightly System as additional releases and builds are needed to exploit new programming techniques, languages, and profiling tools. This paper describes the plan of the ATLAS Nightly Build System Long Shutdown upgrade. It brings modern database and web technologies into the Nightly System, improves monitoring of nigh...

  6. The Sky at Night

    CERN Document Server

    Moore, Patrick

    2010-01-01

    For more than 50 years now Sir Patrick Moore has presented the BBC Television series Sky at Night; not a month has been missed – a record for any television series, and a record which may never be broken. Every three years or so a book is published covering the main events in both astronomy and space research. This is the 13th volume, not only a record of the programmes but also of the great advances and discoveries during the period covered - eclipses, comets, and the strange chemical lakes of Titan, for instance, but also anniversaries such as the fifteenth “birthday” of the Hubble Space Telescope, and not forgetting the programme celebrating the Sky at Night’s 50th year, attended by astronaut Piers Sellars and many others who appeared on the programme over the years. All the chapters are self-contained, and fully illustrated. In this new Sky at Night book you will find much to entertain you. It will appeal to amateurs and professionals alike.

  7. Experimental Investigation of the Heat Transfer in a Room using Night-Time Coling by Mixing Ventilation

    DEFF Research Database (Denmark)

    Jensen, Rasmus Lund; Nørgaard, Jesper; Daniels, Ole;

    2011-01-01

    of full-scale measurements. The efficiency of night-time ventilation depends on the outdoor temperature and the heat transfer between the room air and the building constructions. In a full-scale test room the heat transfer was investigated during 12 hour of discharging by night-time ventilation. Three...... areas and the convective heat transfer coefficient ranged between 5 and 30 W/m2. The ratio of convective to total heat flow from the ceiling depends on the air change rate, ranging from approximately 40% at the low air change rates to approximately 70% at the high air change rate. Even though radiation...

  8. Video surveillance at night

    Science.gov (United States)

    Stevens, Mark R.; Pollak, Joshua B.; Ralph, Scott; Snorrason, Magnus S.

    2005-05-01

    The interpretation of video imagery is the quintessential goal of computer vision. The ability to group moving pixels into regions and then associate those regions with semantic labels has long been studied by the vision community. In urban nighttime scenarios, the difficulty of this task is simultaneously alleviated and compounded. At night there is typically less movement in the scene, which makes the detection of relevant motion easier. However, the poor quality of the imagery makes it more difficult to interpret actions from these motions. In this paper, we present a system capable of detecting moving objects in outdoor nighttime video. We focus on visible-and-near-infrared (VNIR) cameras, since they offer low cost and very high resolution compared to alternatives such as thermal infrared. We present empirical results demonstrating system performance on a parking lot surveillance scenario. We also compare our results to a thermal infrared sensor viewing the same scene.

  9. Nightly Test system migration

    CERN Document Server

    Win-Lime, Kevin

    2013-01-01

    The summer student program allows students to participate to the Cern adventure. They can follow several interesting lectures about particle science and participate to the experiment work. As a summer student, I had worked for LHCb experiment. LHCb uses a lot of software to analyze its data. All this software is organized in packages and projects. They are built and tested during the night using an automated system and the results are displayed on a web interface. Actually, LHCb is changing this system. It is looking for a replacement candidate. So I was charged to unify some internal interfaces to permit a swift migration. In this document, I will describe shortly the system used by LHCb, then I will explain what I have done in detail.

  10. Review of night vision technology

    Science.gov (United States)

    Chrzanowski, K.

    2013-06-01

    Night vision based on technology of image intensifier tubes is the oldest electro-optical surveillance technology. However, it receives much less attention from international scientific community than thermal imagers or visible/NIR imagers due to series of reasons. This paper presents a review of a modern night vision technology and can help readers to understand sophisticated situation on the international night vision market.

  11. Working at Night in Hospital Environment is a Risk Factor for Arterial Stiffness

    Directory of Open Access Journals (Sweden)

    Sinem Özbay

    2012-09-01

    Full Text Available Aim: Arterial stiffness is an independent risk factor for cardiovascular disease. In previous studies, emotional stress has been reported to be a risk factor for cardiovascular disease. In this study, we aimed to investigate the effects of anxiety, stress and fatigue associated with working at night in hospital environment on arterial stiffness in physicians. Methods: The study was carried out with 30 physicians employed in Medical Faculty of Uludağ University between October 2011 and March 2012. Measurements were made using Pulse Wave Sensor HDI system (Hypertension Diagnostics Inc, Eagan, MN(Set No: CR000344 by radial artery pulse wave at the onset and end of night shift. Results: The mean age of night doctors included in the study was 26 years (range: 22-38 and the female/male ratio was 2/1. It was determined that mean values of arterial stiffness were significantly higher after night shift (1330±360 dyne/sn/cm-5 compared to mean values before night shift (1093±250 dyn/s/cm-5 (p=0.01. In the evaluation of other parameters before and after night shift, no statistically significant difference was detected (p>0.05. Conclusion: The increasing arterial stiffness in hospital employees after night shift could be attributed to the effects of stress and fatigue experienced during night shift. (The Me di cal Bul le tin of Ha se ki 2012; 50: 93-5

  12. Byurakan sky night airglow observation

    International Nuclear Information System (INIS)

    The data on sky night airglow are obtained by Byurakan Astrophysical Observatory of the Acadamy of Sciences of the Armenian SSR. (BAO). The picfures of brightness distribution of BAO sky night airglow are presented. The observations were carried out with the help of one-channel electrophotometre placed at the 0.5 metre A 3T-14A telescope in U, B, V bands of the international photometric system in moonless nights of the 1st/2nd October, 1976 and 22nd/23d February, 1977. Presented are also the U, B, V values of BAO sky night airglow brightness from one sguare second in zenith. The ilumination of Erevan and Byurakan is the cause of the increase of airglow brightness of BAO sky night, particularly in the town and village direction

  13. Work at night and breast cancer--report on evidence-based options for preventive actions

    DEFF Research Database (Denmark)

    Bonde, Jens Peter; Hansen, Johnni; Kolstad, Henrik Albert;

    2012-01-01

    is needed before definite recommendations can be made. Earlier or more intensive mammography screening among female night shift worker is not recommended because the harm-benefit ratio in this age group may not be beneficial. Preventive effects of melatonin supplementation on breast cancer risk have...... by suppression of melatonin secretion. Work during the night is widespread worldwide. To provide additional evidence-based recommendations on prevention of diseases related to night shift work, large studies on the impact of various shift schedules and type of light on circadian rhythms need to be conducted...

  14. Traffic Light Detection at Night

    DEFF Research Database (Denmark)

    Jensen, Morten Bornø; Philipsen, Mark Philip; Bahnsen, Chris;

    2015-01-01

    Traffic light recognition (TLR) is an integral part of any in- telligent vehicle, it must function both at day and at night. However, the majority of TLR research is focused on day-time scenarios. In this paper we will focus on detection of traffic lights at night and evalu- ate the performance...... of three detectors based on heuristic models and one learning-based detector. Evaluation is done on night-time data from the public LISA Traffic Light Dataset. The learning-based detector out- performs the model-based detectors in both precision and recall. The learning-based detector achieves an average...

  15. Night lights and regional GDP

    OpenAIRE

    Bickenbach, Frank; Bode, Eckhardt; Lange, Mareike; Nunnenkamp, Peter

    2013-01-01

    Night lights could be a valuable proxy of economic activity at the subnational level when GDP data are lacking or of poor quality. Supplementing Henderson et al.'s (2012) analysis at the national level, we assess the stability of the elasticity of GDP with regard to night lights across regions in Brazil, India, the United States, and Western Europe. The relationship between regional GDP and night lights proves to be unstable, not only where regional GDP data may be unreliable but also where s...

  16. The 24-hour night shift : Astronomy from microlensing monitoring networks

    NARCIS (Netherlands)

    Sackett, PD; Brainerd, TG; Kochanek, CS

    2001-01-01

    Scores of on-going microlensing events are now announced yearly by the microlensing discovery teams OGLE, MACHO and EROS. These early warning systems have allowed other international microlensing networks to focus considerable resources on intense photometric and occasionally spectroscopic - monitor

  17. Discover POPSCIENCE on Researchers' Night

    CERN Multimedia

    The POPSCIENCE Team

    2014-01-01

    On Friday 26 September 2014, CERN will be celebrating European Researchers' Night at three venues in Geneva and St. Genis-Pouilly. Inspired by Andy Warhol, this year's theme is “Pop science is for everyone”.     Every year, on the last Friday of September, the European Researchers’ Night takes place in about 300 cities all over Europe, with funding from the EU, to promote research and highlight researchers in engaging and fun ways for the general public. Andy Warhol said, “Pop art is for everyone”. This year, “Pop science is for everyone” is the motto of the Researchers’ Night event organised by CERN and its partners*. The night will offer everyone the opportunity to learn about the latest discoveries in physics and cosmology through poetry, theatre and music. This will be in addition to the event's traditional activities for the general public. To attract new audiences,...

  18. Twelve-hour shifts: burnout or job satisfaction?

    OpenAIRE

    Dall'Ora, C.; Griffiths, P.; J. Ball

    2016-01-01

    Job satisfaction and burnout in the nursing workforce are global concerns. Not only do job satisfaction and burnout affect the quality and safety of care, but job satisfaction is also a factor in nurses’ decisions to stay or leave their jobs. Shift patterns may be an important aspect influencing wellbeing and satisfaction among nurses. Many hospitals worldwide are moving to 12-hour shifts in an effort to improve efficiency and cope with nursing shortages. But what is the effect of these work ...

  19. Acute sleep deprivation and circadian misalignment associated with transition onto the first night of work impairs visual selective attention.

    Directory of Open Access Journals (Sweden)

    Nayantara Santhi

    Full Text Available BACKGROUND: Overnight operations pose a challenge because our circadian biology promotes sleepiness and dissipates wakefulness at night. Since the circadian effect on cognitive functions magnifies with increasing sleep pressure, cognitive deficits associated with night work are likely to be most acute with extended wakefulness, such as during the transition from a day shift to night shift. METHODOLOGY/PRINCIPAL FINDINGS: To test this hypothesis we measured selective attention (with visual search, vigilance (with Psychomotor Vigilance Task [PVT] and alertness (with a visual analog scale in a shift work simulation protocol, which included four day shifts followed by three night shifts. There was a nocturnal decline in cognitive processes, some of which were most pronounced on the first night shift. The nighttime decrease in visual search sensitivity was most pronounced on the first night compared with subsequent nights (p = .04, and this was accompanied by a trend towards selective attention becoming 'fast and sloppy'. The nighttime increase in attentional lapses on the PVT was significantly greater on the first night compared to subsequent nights (p<.05 indicating an impaired ability to sustain focus. The nighttime decrease in subjective alertness was also greatest on the first night compared with subsequent nights (p<.05. CONCLUSIONS/SIGNIFICANCE: These nocturnal deficits in attention and alertness offer some insight into why occupational errors, accidents, and injuries are pronounced during night work compared to day work. Examination of the nighttime vulnerabilities underlying the deployment of attention can be informative for the design of optimal work schedules and the implementation of effective countermeasures for performance deficits during night work.

  20. Shift work and cancer: Night work and breast cancer – results from a large prospective study in the Dutch general working population. Oral presentations: Day 1: Wednesday, September 7, 2011. 22nd International Conference on Epidemiology in Occupational Health EPICOH 2011 September 7-9, 2011, Oxford, UK

    NARCIS (Netherlands)

    Geuskens, G.; Vroome, E. de; Weerd, M. de; Koppes, L.

    2011-01-01

    Objectives Despite the current debate, few prospective studies on night work and breast cancer have been performed, and the scientific evidence is limited. The aim of this prospective study was to investigate the relation between night work and breast cancer in the general working population. Method

  1. A night with good vibrations

    CERN Multimedia

    2002-01-01

    Next week-end, the Geneva Science History Museum invites you to a Science Night under the banner of waves and vibrations. Scientists, artists and storytellers from more than forty institutes and local or regional associations will show that waves and vibrations form an integral part of our environment. You will be able to get in contact with the nature of waves through interactive exhibitions on sound and light and through hands-on demonstrations arranged in the Park of the Perle du Lac. On the CERN stand, you will be able to measure the speed of light with a bar of chocolate, and understand the scattering of waves with plastic ducks. Amazing, no? In addition to the stands, the Night will offer many other activities: reconstructions of experiments, a play, a concert of crystal glasses, an illuminated fountain, a house of spirits. More information Science Night, 6 and 7 July, Park of the Perle du Lac, Geneva

  2. A night with good vibrations

    CERN Multimedia

    2002-01-01

    For its third edition, the Museum d'histoire des sciences invites you to a Science Night under the banner of waves and undulations. Scientists, artists and storytellers from more than forty institutes and local or regional associations will show in only one weekend that waves and undulations form an integral part of our daily environment. Telephones, televisions, radios, irons, lighting, music, sun rays, stars, rainbows, earthquakes and other natural phenomena - all produce, emit or receive waves or undulations. The visitors attending the Night will be able to get in contact with the nature of waves through interactive exhibitions on sound and light and through hands-on demonstrations arranged around the Bartholoni villa and in the Park of the Perle du lac. An amusing and distracting way to familiarize yourself with the concepts of wavelength, frequency and interference lengths... In addition to the stands, the Night will offer many other activities: reconstructions of critical experiments, scientific consu...

  3. Twelve-hour shifts: burnout or job satisfaction?

    Science.gov (United States)

    Dall'Ora, Chiara; Griffiths, Peter; Ball, Jane

    Job satisfaction and burnout in the nursing workforce are global concerns. Not only do job satisfaction and burnout affect the quality and safety of care, but job satisfaction is also a factor in nurses' decisions to stay or leave their jobs. Shift patterns may be an important aspect influencing wellbeing and satisfaction among nurses. Many hospitals worldwide are moving to 12-hour shifts in an effort to improve efficiency and cope with nursing shortages. But what is the effect of these work patterns on the wellbeing of nurses working on hospital wards? This article reports on the results of a study performed in 12 European countries exploring whether 12-hour shifts are associated with burnout, job satisfaction and intention to leave the job. PMID:27180462

  4. Night blindness and ancient remedy

    Directory of Open Access Journals (Sweden)

    H.A. Hajar Al Binali

    2014-01-01

    Full Text Available The aim of this article is to briefly review the history of night blindness and its treatment from ancient times until the present. The old Egyptians, the Babylonians, the Greeks and the Arabs used animal liver for treatment and successfully cured the disease. The author had the opportunity to observe the application of the old remedy to a patient. Now we know what the ancients did not know, that night blindness is caused by Vitamin A deficiency and the animal liver is the store house for Vitamin A.

  5. Progress in color night vision

    NARCIS (Netherlands)

    Toet, A.; Hogervorst, M.A.

    2012-01-01

    We present an overview of our recent progress and the current state-of-the-art techniques of color image fusion for night vision applications. Inspired by previously developed color opponent fusing schemes, we initially developed a simple pixel-based false color-mapping scheme that yielded fused fal

  6. Color of the Night Sky

    Science.gov (United States)

    Walker, G.

    2013-12-01

    (Abstract only) The author presents the results of all-night monitoring of the sky brightness in BVRI filters. The measuring equipment used was Unihendron SQM's and knightware software. Results from four observatories are presented, along with implications of twilight flats.

  7. Volunteers for Researchers’ Night wanted

    CERN Multimedia

    Katarina Anthony

    2015-01-01

    Every year, on the last Friday of September, the European Researchers’ Night (see here) takes place in about 300 cities all over Europe - promoting research in engaging and fun ways for the general public. This year, CERN will be participating once again, hosting dozens of events across the Balexert shopping centre – and we’ll need YOUR help to make the celebration a success.   From film screenings and celebrity Q&A sessions to “Ask a Researcher” and build-your-own LEGO LHC events, this year’s Researchers’ Night is going to be jam-packed! The fun will kick off prior to the night itself with a mock-up of the LHC tunnel installed in the central court of the Balexert shopping centre, 8-12 September*. CERN people will be on hand to speak to shoppers about the LHC, and to encourage them to participate in Researchers’ Night! The CERN organisers are recruiting volunteers and support staff for Researchers’ ...

  8. A Night For Human Rights

    Directory of Open Access Journals (Sweden)

    Julia Lourie

    2016-02-01

    Full Text Available A review of "A Night For Human Rights", a contemporary art auction curated by Marc Mayer and Julia Lourie to call attention to urgent human rights violations including America's mass incarceration epidemic and the current Syrian refugee crisis.

  9. A Night For Human Rights

    OpenAIRE

    Julia Lourie

    2016-01-01

    A review of "A Night For Human Rights", a contemporary art auction curated by Marc Mayer and Julia Lourie to call attention to urgent human rights violations including America's mass incarceration epidemic and the current Syrian refugee crisis.

  10. Adaptation to shift work: physiologically based modeling of the effects of lighting and shifts' start time.

    Science.gov (United States)

    Postnova, Svetlana; Robinson, Peter A; Postnov, Dmitry D

    2013-01-01

    Shift work has become an integral part of our life with almost 20% of the population being involved in different shift schedules in developed countries. However, the atypical work times, especially the night shifts, are associated with reduced quality and quantity of sleep that leads to increase of sleepiness often culminating in accidents. It has been demonstrated that shift workers' sleepiness can be improved by a proper scheduling of light exposure and optimizing shifts timing. Here, an integrated physiologically-based model of sleep-wake cycles is used to predict adaptation to shift work in different light conditions and for different shift start times for a schedule of four consecutive days of work. The integrated model combines a model of the ascending arousal system in the brain that controls the sleep-wake switch and a human circadian pacemaker model. To validate the application of the integrated model and demonstrate its utility, its dynamics are adjusted to achieve a fit to published experimental results showing adaptation of night shift workers (n = 8) in conditions of either bright or regular lighting. Further, the model is used to predict the shift workers' adaptation to the same shift schedule, but for conditions not considered in the experiment. The model demonstrates that the intensity of shift light can be reduced fourfold from that used in the experiment and still produce good adaptation to night work. The model predicts that sleepiness of the workers during night shifts on a protocol with either bright or regular lighting can be significantly improved by starting the shift earlier in the night, e.g.; at 21:00 instead of 00:00. Finally, the study predicts that people of the same chronotype, i.e. with identical sleep times in normal conditions, can have drastically different responses to shift work depending on their intrinsic circadian and homeostatic parameters.

  11. Adaptation to shift work: physiologically based modeling of the effects of lighting and shifts' start time.

    Directory of Open Access Journals (Sweden)

    Svetlana Postnova

    Full Text Available Shift work has become an integral part of our life with almost 20% of the population being involved in different shift schedules in developed countries. However, the atypical work times, especially the night shifts, are associated with reduced quality and quantity of sleep that leads to increase of sleepiness often culminating in accidents. It has been demonstrated that shift workers' sleepiness can be improved by a proper scheduling of light exposure and optimizing shifts timing. Here, an integrated physiologically-based model of sleep-wake cycles is used to predict adaptation to shift work in different light conditions and for different shift start times for a schedule of four consecutive days of work. The integrated model combines a model of the ascending arousal system in the brain that controls the sleep-wake switch and a human circadian pacemaker model. To validate the application of the integrated model and demonstrate its utility, its dynamics are adjusted to achieve a fit to published experimental results showing adaptation of night shift workers (n = 8 in conditions of either bright or regular lighting. Further, the model is used to predict the shift workers' adaptation to the same shift schedule, but for conditions not considered in the experiment. The model demonstrates that the intensity of shift light can be reduced fourfold from that used in the experiment and still produce good adaptation to night work. The model predicts that sleepiness of the workers during night shifts on a protocol with either bright or regular lighting can be significantly improved by starting the shift earlier in the night, e.g.; at 21:00 instead of 00:00. Finally, the study predicts that people of the same chronotype, i.e. with identical sleep times in normal conditions, can have drastically different responses to shift work depending on their intrinsic circadian and homeostatic parameters.

  12. Mothers’ Night Work and Children’s Behavior Problems

    OpenAIRE

    Dunifon, Rachel; Kalil, Ariel; Crosby, Danielle; Su, Jessica Houston

    2013-01-01

    Many mothers work in jobs with nonstandard schedules (i.e., schedules that involve work outside of the traditional 9–5, Monday through Friday schedule); this is particularly true for economically disadvantaged mothers. The present paper uses longitudinal data from the Fragile Families and Child Wellbeing Survey (n = 2,367 mothers of children ages 3–5) to examine the associations between maternal nonstandard work and children’s behavior problems, with a particular focus on mothers’ night shift...

  13. White Nights rebuts Pravda claims

    International Nuclear Information System (INIS)

    This paper reports that another Russo-foreign joint venture under attack in the Moscow press has denied charges of impropriety and mismanagement in its operations. The White Nights joint venture last month came under scathing attack from Moscow newspaper Pravda, which alleged the venture has reneged on its promises, is virtually bankrupt, and mistreats Russian employees. White Nights is a joint venture owned 50% by Varyeganneftegaz (VNG), a Russian oil and gas enterprise, and 50% by Salomon Inc. unit Phibro Energy Inc., Greenwich, Conn., and Anglo-Suisse (U.S.S.R.) Ltd., a subsidiary of Anglo-Suisse Inc., Houston. The venture started operations Apr. 1, 1991, with a program of workovers, redevelopment, and horizontal wells in West Varyegan and Tagrinsk oil fields in western Siberia

  14. Friday Night Pearls of Wisdom

    Directory of Open Access Journals (Sweden)

    Thomas Leabhart

    2012-05-01

    Full Text Available This text testifies to the pedagogy of Etienne Decroux and, in particular, to his lessons in the early 1970s in the blue basement of his house on the outskirts of Paris. The author presents peculiarities of the teaching of mime with emphasis on Decroux’s theatrical improvisation lessons taught every Friday night, and discusses the ambiguities and the power of Decroux’s thought and contributions to contemporary theatre, especially to acting pedagogy.

  15. Sleepwalking, night terrors, and consciousness.

    OpenAIRE

    Crisp, A. H.; Matthews, B M; Oakey, M; Crutchfield, M

    1990-01-01

    OBJECTIVE--To determine some personality and psychoneurotic characteristics of adults who have the sleepwalking-night terrors syndrome. DESIGN--Prospective assessment of two groups of consecutive patients with a firm diagnosis of either of two specific sleep disorders as established clinically and by polysomnography. SETTING--Outpatient sleep disorders clinic and sleep laboratory in a tertiary referral centre. PATIENTS--12 Patients referred consecutively to the clinic in whom a diagnosis of s...

  16. Night Vision Device and Cockpit Displays

    Data.gov (United States)

    Federal Laboratory Consortium — The Night Vision Device and Cockpit Display labevaluates night vision devices and certifies them for use in the fleet. Lab functions supported include: Analysis of...

  17. Associations between night work and anxiety, depression, insomnia, sleepiness and fatigue in a sample of Norwegian nurses.

    Directory of Open Access Journals (Sweden)

    Nicolas M F Øyane

    Full Text Available BACKGROUND: Night work has been reported to be associated with various mental disorders and complaints. We investigated relationships between night work and anxiety, depression, insomnia, sleepiness and fatigue among Norwegian nurses. METHODS: The study design was cross-sectional, based on validated self-assessment questionnaires. A total of 5400 nurses were invited to participate in a health survey through the Norwegian Nurses' Organization, whereof 2059 agreed to participate (response rate 38.1%. Nurses completed a questionnaire containing items on demographic variables (gender, age, years of experience as a nurse, marital status and children living at home, work schedule, anxiety/depression (Hospital Anxiety and Depression Scale, insomnia (Bergen Insomnia Scale, sleepiness (Epworth Sleepiness Scale and fatigue (Fatigue Questionnaire. They were also asked to report number of night shifts in the last 12 months (NNL. First, the parameters were compared between nurses i never working nights, ii currently working nights, and iii previously working nights, using binary logistic regression analyses. Subsequently, a cumulative approach was used investigating associations between NNL with the continuous scores on the same dependent variables in hierarchical multiple regression analyses. RESULTS: Nurses with current night work were more often categorized with insomnia (OR = 1.48, 95% CI = 1.10-1.99 and chronic fatigue (OR = 1.78, 95% CI = 1.02-3.11 than nurses with no night work experience. Previous night work experience was also associated with insomnia (OR = 1.45, 95% CI = 1.04-2.02. NNL was not associated with any parameters in the regression analyses. CONCLUSION: Nurses with current or previous night work reported more insomnia than nurses without any night work experience, and current night work was also associated with chronic fatigue. Anxiety, depression and sleepiness were not associated with night work, and no cumulative effect of night shifts

  18. Dispositional factors and work mastery among shift workers.

    Science.gov (United States)

    Foldal, Vegard; Langvik, Eva; Saksvik-Lehouillier, Ingvild

    2016-01-01

    The aim of the present study was to investigate how broad personality dimensions and dispositional resistance to change are associated with mastery of work among shift workers. A total of 285 shift workers employed in rotating shifts with morning, evening and night work and night shift schedules in a municipality in Norway completed electronic questionnaires. The findings suggest that the broad personality dimensions neuroticism and conscientiousness were significant predictors of perceived work mastery among shift workers in this sample, whereas the narrow trait dispositional resistance to change was not. PMID:27093576

  19. Night terrors. Clinical characteristics and personality patterns.

    Science.gov (United States)

    Kales, J D; Kales, A; Soldatos, C R; Caldwell, A B; Charney, D S; Martin, E D

    1980-12-01

    The development and clinical course of night terrors and the personality patterns of patients with this disorder were evaluated in 40 adults who had a current complaint of night terrors. Compared with a group of adult sleepwalkers, the patients with night terrors had a later age of onset for their disorder, a higher frequency of events, and an earlier time of night for the occurrence of episodes. Both groups had high levels of psychopathology, with higher values for the night terror group. This sleepwalkers showed active, outwardly directed behavioral patterns, whereas the night terror patients showed an inhibition of outward expressions of aggression and a predominance of anxiety, depression, tendencies obsessive-compulsive/, and phobicness. Although night terrors and sleepwalking in childhood seem to be related primarily to genetic and developmental factors, their persistence and especially their onset in adulthood are found to be related more to psychological factors. PMID:7447622

  20. popscience - European Researchers Night 2014

    CERN Multimedia

    Jeanneret, Guillaume

    2014-01-01

    Vendredi 26 septembre 2014, le CERN célèbrera la Nuit européenne des chercheurs à Genève et à St-Genis-Pouilly. Le thème de l’édition 2014 est inspiré d’Andy Warhol : « Pop science is for everyone ». On Friday 26 September 2014, CERN will be celebrating European Researchers' Night at three venues in Geneva and St. Genis-Pouilly. Inspired by Andy Warhol, this year's theme is “Pop science is for everyone”.

  1. Narratives, memorable cases and metaphors of night nursing: findings from an interpretative phenomenological study.

    Science.gov (United States)

    Zannini, Lucia; Ghitti, Maria Grazia; Martin, Sonia; Palese, Alvisa; Saiani, Luisa

    2015-09-01

    The aim of the study was to explore the experiences of night nurses. An interpretative phenomenological study was undertaken, and 35 nurses working in Italian medical, surgical and intensive care units were purposely recruited. Data were gathered in 2010 by semi-structured interviews, collecting nurses' narratives, memorable cases and metaphors, aimed at summarising the essence of work as a nurse during the night. The experience of night nursing is based on four interconnected themes: (i) working in a state of alert, (ii) growing by expanding autonomy and responsibility, (iii) assuring sensitive surveillance and (iv) experiencing deep intimacy. Memorable episodes were polarised along (i) expected/unexpected events; (ii) positive/negative epilogues; and (iii) life/death issues. Many of the emergent metaphors described working during the night as being in the middle of a space where an apparent calm scene takes place, but unpredictable factors may suddenly change the order of events and the outcomes, creating chaos. Working during the night alerts nurses, who increase autonomy, expanding their role and assuming more responsibility with respect to that assumed during daily shifts. The nurses' clinical reasoning is based on data they carefully listen to, and on the meaning that nurses give time by time to different noises and silence. While in the past a sense of companionships was reported, a loneliness or a 'neutral' experience concerning the relationships with colleagues seems to prevail during night nursing. Working night shifts is a complex task, and specific training must be assured to students/novices.

  2. Narratives, memorable cases and metaphors of night nursing: findings from an interpretative phenomenological study.

    Science.gov (United States)

    Zannini, Lucia; Ghitti, Maria Grazia; Martin, Sonia; Palese, Alvisa; Saiani, Luisa

    2015-09-01

    The aim of the study was to explore the experiences of night nurses. An interpretative phenomenological study was undertaken, and 35 nurses working in Italian medical, surgical and intensive care units were purposely recruited. Data were gathered in 2010 by semi-structured interviews, collecting nurses' narratives, memorable cases and metaphors, aimed at summarising the essence of work as a nurse during the night. The experience of night nursing is based on four interconnected themes: (i) working in a state of alert, (ii) growing by expanding autonomy and responsibility, (iii) assuring sensitive surveillance and (iv) experiencing deep intimacy. Memorable episodes were polarised along (i) expected/unexpected events; (ii) positive/negative epilogues; and (iii) life/death issues. Many of the emergent metaphors described working during the night as being in the middle of a space where an apparent calm scene takes place, but unpredictable factors may suddenly change the order of events and the outcomes, creating chaos. Working during the night alerts nurses, who increase autonomy, expanding their role and assuming more responsibility with respect to that assumed during daily shifts. The nurses' clinical reasoning is based on data they carefully listen to, and on the meaning that nurses give time by time to different noises and silence. While in the past a sense of companionships was reported, a loneliness or a 'neutral' experience concerning the relationships with colleagues seems to prevail during night nursing. Working night shifts is a complex task, and specific training must be assured to students/novices. PMID:25693848

  3. Night eating and weight change in middle-aged men and women

    DEFF Research Database (Denmark)

    Andersen, G S; Stunkard, A J; Sørensen, T I A;

    2004-01-01

    OBJECTIVE: To examine the association between the habit of eating at night, and the 5-y preceding and 6-y subsequent weight changes in a middle-aged population, with particular focus on the obese. DESIGN: Prospective study with initial examination of the cohort in 1982-83, re-examination in 1987......-94 too. Subjects working night shifts were excluded. MEASUREMENTS: Night eating in 1987-88, 5-y preceding and 6-y subsequent weight change. RESULTS: In total, 9.0% women and 7.4% men reported 'getting up at night to eat'. Obese women with night eating experienced an average 6-y weight gain of 5.2 kg (P=0.......004), whereas only 0.9 kg average weight gain was seen among obese women who did not get up at night to eat. No significant associations were found among all women, or between night eating and the 5-y preceding weight change for women. Night eating and weight change were not associated among men. CONCLUSION...

  4. The Night Eating Syndrome (NES) in Bariatric Surgery Patients.

    Science.gov (United States)

    de Zwaan, Martina; Marschollek, Michael; Allison, Kelly C

    2015-11-01

    The night eating syndrome (NES) has been included into the Diagnostic and Statistical Manual of Mental Disorders 5 as an example of an 'other-specified feeding or eating disorder'. The prevalence of NES has found to be higher in obese populations than in the general population and seems to rise with increasing body mass index. Recent studies suggest a prevalence of 2%-20% in bariatric surgery samples. Given that the core feature of this eating disorder may involve a shift in the circadian pattern of eating that disrupts sleep, and not the ingestion of objectively large amounts of food, it is a pattern that can continue after bariatric surgery. Nonetheless, symptoms of NES appear to decrease after weight loss surgery, and there is no evidence that pre-surgery NES negatively impacts weight loss following surgery. Prospective and longitudinal studies of the course of night eating symptoms are warranted using clear criteria and standardized assessment instruments.

  5. Shifting Attention

    Science.gov (United States)

    Ingram, Jenni

    2014-01-01

    This article examines the shifts in attention and focus as one teacher introduces and explains an image that represents the processes involved in a numeric problem that his students have been working on. This paper takes a micro-analytic approach to examine how the focus of attention shifts through what the teacher and students do and say in the…

  6. Night vision: changing the way we drive

    Science.gov (United States)

    Klapper, Stuart H.; Kyle, Robert J. S.; Nicklin, Robert L.; Kormos, Alexander L.

    2001-03-01

    A revolutionary new Night Vision System has been designed to help drivers see well beyond their headlights. From luxury automobiles to heavy trucks, Night Vision is helping drivers see better, see further, and react sooner. This paper describes how Night Vision Systems are being used in transportation and their viability for the future. It describes recent improvements to the system currently in the second year of production. It also addresses consumer education and awareness, cost reduction, product reliability, market expansion and future improvements.

  7. Managing customer relationships in night clubs

    OpenAIRE

    Hassanova, Anna

    2010-01-01

    In this thesis managing customer relationships in night clubs in Finland is researched. Managing customer relationship is a difficult process, which includes management strategy, customers´ attitude, attraction, retention and loyalty. Customers are individuals who want to be treated nicely and specially. The hardest work for managers of the night clubs is to attract a new customer, satisfy every customer and win their loyalty. The purpose of the study was to explore how night club managers ca...

  8. Night ventilation control strategies in office buildings

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Zhaojun; Yi, Lingli; Gao, Fusheng [School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090 (China)

    2009-10-15

    In moderate climates night ventilation is an effective and energy-efficient approach to improve the indoor thermal environment for office buildings during the summer months, especially for heavyweight construction. However, is night ventilation a suitable strategy for office buildings with lightweight construction located in cold climates? In order to answer this question, the whole energy-consumption analysis software EnergyPlus was used to simulate the indoor thermal environment and energy consumption in typical office buildings with night mechanical ventilation in three cities in northern China. The summer outdoor climate data was analyzed, and three typical design days were chosen. The most important factors influencing night ventilation performance such as ventilation rates, ventilation duration, building mass and climatic conditions were evaluated. When night ventilation operation time is closer to active cooling time, the efficiency of night ventilation is higher. With night ventilation rate of 10 ach, the mean radiant temperature of the indoor surface decreased by up to 3.9 C. The longer the duration of operation, the more efficient the night ventilation strategy becomes. The control strategies for three locations are given in the paper. Based on the optimized strategies, the operation consumption and fees are calculated. The results show that more energy is saved in office buildings cooled by a night ventilation system in northern China than ones that do not employ this strategy. (author)

  9. CERN Researchers' Night @ CMS + TOTEM

    CERN Document Server

    Hoch, Michael

    2011-01-01

    Young researchers' shifter training at CMS; • Introduction talk with discussion, • CMS control room shadowing the shifters • TOTEM control room introduction and discusson • Scientific poster work shop and presentation • Science Art installations ‘Faces of CMS’ & ‘Science Cloud’ • CMS Shift diploma presentation

  10. Night-vision goggles for night-blind subjects : subjective evaluation after 2 years of use

    NARCIS (Netherlands)

    Hartong, D. T.; Kooijman, A. C.

    2006-01-01

    Purpose: To evaluate the usefulness of night-vision goggles (NVG) for night-blind subjects after 1 and 2 years of use. Methods: Eleven night-blind subjects with retinitis pigmentosa used NVG for a 2-year period. At the end of each year, they were requested to fill-in two questionnaires regarding the

  11. Why Does Asthma Attack Severely at Night?

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    @@ The rhythmic changes of human physiological activities by day and at night may cause regular change of the patient's condition within one day. The following is the explanation with the theory of Chinese medicine for the reason why asthma attacks severely at night.

  12. Field testing driver night vision devices

    NARCIS (Netherlands)

    Kooi, F.L.; Kolletzki, D.

    2007-01-01

    This paper summarizes the available methodologies to field test driver night vision devices ranging from vehicle mounted camera’s to head-mounted NVG’s. As in flight trials, a formidable challenge is to collect meaningful performance measures. Night vision systems for land and air systems show many

  13. Definitions of night eating in adolescent girls

    NARCIS (Netherlands)

    Striegel-Moore, RH; Thompson, D; Franko, DL; Barton, B; Affenito, S; Schreiber, GB; Daniels, [No Value

    2004-01-01

    Objective: To describe the prevalence of night eating in a community cohort of black and white girls, using different definitions of night eating as described in the literature. Research Methods and Procedures: Three-day food diaries collected as part of the National Growth and Health Study were exa

  14. Night time blood pressure dip

    Institute of Scientific and Technical Information of China (English)

    Dennis; Bloomfield; Alex; Park

    2015-01-01

    The advent of ambulatory blood pressure monitoring permitted examination of blood pressures during sleep and recognition of the associated circadian fall in pressure during this period. The fall in pressure,called the "dip",is defined as the difference between daytime mean systolic pressure and nighttime mean systolic pressure expressed as a percentage of the day value. Ten percent to 20% is considered normal. Dips less than 10%,referred to as blunted or absent,have been considered as predicting an adverse cardiovascular event. This view and the broader concept that white coat hypertension itself is a forerunner of essential hypertension is disputable. This editorial questions whether mean arterial pressures over many hours accurately represent the systolic load,whether nighttime dipping varies from measure to measure or is a fixed phenomenon,whether the abrupt morning pressure rise is a risk factor or whether none of these issues are as important as the actual night time systolic blood pressure itself. The paper discusses the difference between medicated and nonmedicated white coat hypertensives in regard to the cardiovascular risk and suggests that further work is necessary to consider whether the quality and duration of sleep are important factors.

  15. The Night Sky on Mars

    Science.gov (United States)

    2005-01-01

    Taking advantage of extra solar energy collected during the day, NASA's Mars Exploration Rover Spirit settled in for an evening of stargazing, photographing the two moons of Mars as they crossed the night sky. This time-lapse composite, acquired the evening of Spirit's martian sol 590 (Aug. 30, 2005) from a perch atop 'Husband Hill' in Gusev Crater, shows Phobos, the brighter moon, on the left, and Deimos, the dimmer moon, on the right. In this sequence of images obtained every 170 seconds, both moons move from top to bottom. The bright star Aldebaran forms a trail on the right, along with some other stars in the constellation Taurus. Most of the other streaks in the image mark the collision of cosmic rays with pixels in the camera. Scientists will use images of the two moons to better map their orbital positions, learn more about their composition, and monitor the presence of nighttime clouds or haze. Spirit took the six images that make up this composite using Spirit's panoramic camera with the camera's broadband filter, which was designed specifically for acquiring images under low-light conditions.

  16. Transfer color to night vision images

    Institute of Scientific and Technical Information of China (English)

    Shaoyuan Sun; Zhongliang Jing; Gang Liu; Zhenhua Li

    2005-01-01

    @@ Natural color appearance is the key problem of color night vision field. In this paper, the color mood of daytime color image is transferred to the monochromic night vision image. This method gives the night image a natural color appearance. For each pixel in the night vision image, the best matching pixel in the color image is found based on texture similarity measure. Entropy, energy, contrast, homogeneity, and correlation features based on co-occurrence matrix are combined as texture similarity measure to find the corresponding pixels between the two images. We use a genetic algorithm (GA) to find the optimistic weighting factors assigned to the five different features. GA is also employed in searching the matching pixels to make the color transfer algorithm faster. When the best matching pixel in the color image is found, the chromaticity values are transferred to the corresponding pixel of the night vision image. The experiment results demonstrate the efficiency of this natural color transfer technique.

  17. Cardiovascular risk factors and primary selection into shift work

    DEFF Research Database (Denmark)

    Nabe-Nielsen, Kirsten; Garde, Anne Helene; Tüchsen, Finn;

    2008-01-01

    : In the unadjusted analyses, baseline obesity was associated with fixed evening work at follow-up. Minimal or light-to-moderate leisure-time physical activity was associated with a decrease in the odds ratio (OR) for two or three shifts including night work. Smoking status was associated with fixed evening work......OBJECTIVES: This study examined differences between future shift workers and future day workers as regards cardiovascular risk factors before they began different work schedules and the differences that remained after control for sociodemographic factors and general self-efficacy. METHODS......, fixed night work, and two- or three- shift work including night work. After adjustment for sociodemographic factors and general self-efficacy, smoking was prospectively associated with fixed evening work [OR 1.56, 95% confidence interval (95% CI) 1.21-2.02] and fixed night work (OR 1.64, 95% CI 1...

  18. New experiments on the effect of clock shifts on homing in pigeons

    Science.gov (United States)

    Schmidt-Koenig, K.

    1972-01-01

    The effect of clock shifts as an experimental tool for predictably interfering with the homing ability of birds is discussed. Clock shifts introduce specific errors in the birds' sun azimuth compass, resulting in corresponding errors during initial orientation and possibly during orientation enroute. The effects of 6 hour and 12 hour clock shifts resulted in a 90 degree deviation and a 180 degree deviation from the initial orientation, respectively. The method for conducting the clock shift experiments and results obtained from previous experiments are described.

  19. Dedicated Shift Wrap-up Time Does Not Improve Resident Sign-out Volume or Efficiency

    Directory of Open Access Journals (Sweden)

    Jeanmonod, Rebecca K

    2010-02-01

    Full Text Available Objectives: Sign-out (SO is a challenge to the emergency physician. Some training programs have instituted overlapping 9-hour shifts. The residents see patients for eight hours, and have one hour of wrap-up time. This hour helps them complete patient care, leaving fewer patients to sign-out. We examined whether this strategy impacts SO burden.Methods: This is a retrospective review of patients evaluated by emergency medicine (EM residents working 9-hour (eight hours of patient care, one hour wrap-up time and 12-hour shifts (12 hours patient care, no reserved time for wrap-up. Data were collected by reviewing the clinical tracker. A patient was assigned to the resident who initiated care and dictated the chart. SO was defined as any patient in the ED without disposition at change of shift. Patient turn-around-time (TAT was also recorded.Results: One-hundred sixty-one postgraduate-year-one resident (PGY1, 264 postgraduate-year-two resident (PGY2, and 193 postgraduate-year-three resident (PGY3 shifts were included. PGY1s signed out 1.9 patients per 12-hour shift. PGY2s signed out 2.3 patients on 12-hour shifts and 1.8 patients on 9-hour shifts. PGY3s signed out 2.1 patients on 12-hour shifts and 2.0 patients on 9-hour shifts. When we controlled for patients seen per hour, SO burden was constant by class regardless of shift length, with PGY2s signing out 18% of patients seen compared to 15% for PGY3s. PGY1s signed out 18% of patients seen. TAT for patients seen by PGY1s and PGY2s was similar, at 189 and 187 minutes, respectively. TAT for patients seen by PGY3s was significantly less at 175 minutes.Conclusion: The additional hour devoted to wrapping up patients in the ED had no affect on SO burden. The SO burden represented a fixed percentage of the total number of patients seen by the residents. PGY3s sign-out a smaller percentage of patients seen compared to other classes, and have faster TATs. [West J Emerg Med. 2010; 11(1:35-39].

  20. Contributors to shift work tolerance in South Korean nurses working rotating shift.

    Science.gov (United States)

    Jung, Hye-Sun; Lee, Bokim

    2015-05-01

    Shift workers have rapidly increased in South Korea; however, there is no published research exploring shift work tolerance among South Korean workers. This study aimed to investigate factors related to shift work tolerance in South Korean nurses. The sample comprised of 660 nurses who worked shifts in a large hospital in South Korea. A structured questionnaire included following comprehensive variables: demographic (age and number of children), individual (morningness and self-esteem), psychosocial (social support and job stress), lifestyle (alcohol consumption, physical activity, and BMI), and working condition factors (number of night shifts and working hours). Shift work tolerance was measured in terms of insomnia, fatigue, and depression. The results of hierarchical regressions indicate that all variables, except for three, number of children, BMI, and working hours, were related to at least one of the symptoms associated with shift work tolerance. Based on these results, we offer some practical implications to help improve shift work tolerance of workers. PMID:25448057

  1. Tough Shift

    DEFF Research Database (Denmark)

    Brewer, Robert S.; Verdezoto, Nervo; Holst, Thomas;

    2015-01-01

    people to change their behavior at home. Leveraging prior research on encouraging reductions in residential energy use through game play, we introduce ShareBuddy: a casual mobile game intended to encourage players not only to reduce, but also to shift their electricity use. We conducted two field studies...... real-world resource use into a game....

  2. Power Shift

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    @@ "We are entering a new era of world history: the end of Western domination and the arrival of the Asian century. The question is: will Washington wake up to this reality?" This is the central premise of Kishore Mahbubani's provocative new book The New Asian Hemisphere: The Irresistible Shift of Global Power to the East.

  3. What is the evidence for less shift work tolerance in older workers?

    NARCIS (Netherlands)

    Blok, M.M.; Looze, M.P.de

    2011-01-01

    This paper explores the suggestion that older people would be less tolerant to shift work. Field studies on age-shift work interaction effects on sleep, fatigue, performance, accidents and health were reviewed. Studies on age-shift (morning, afternoon, night) and age-shift system (roster) interactio

  4. Time-dependent effects of dim light at night on re-entrainment and masking of hamster activity rhythms.

    Science.gov (United States)

    Frank, David W; Evans, Jennifer A; Gorman, Michael R

    2010-04-01

    Bright light has been established as the most ubiquitous environmental cue that entrains circadian timing systems under natural conditions. Light equivalent in intensity to moonlight (circadian function in a number of entrainment paradigms. For example, compared to completely dark nights, dim nighttime illumination accelerated re-entrainment of hamster activity rhythms to 4-hour phase advances and delays of an otherwise standard laboratory photocycle. The purpose of this study was to determine if a sensitive period existed in the night during which dim illumination had a robust influence on speed of re-entrainment. Male Siberian hamsters were either exposed to dim light throughout the night, for half of the night, or not at all. Compared to dark nights, dim illumination throughout the entire night decreased by 29% the time for the midpoint of the active phase to re-entrain to a 4-hour phase advance and by 26% for a 4-hour delay. Acceleration of advances and delays were also achieved with 5 hours of dim light per night, but effects depended on whether dim light was present in the first half, second half, or first and last quarters of the night. Both during phase shifting and steady-state entrainment, partially lit nights also produced strong positive and negative masking effects, as well as entrainment aftereffects in constant darkness. Thus, even in the presence of a strong zeitgeber, light that might be encountered under a natural nighttime sky potently modulates the circadian timing system of hamsters.

  5. Night work is associated with glycemic levels and anthropometric alterations preceding diabetes: Baseline results from ELSA-Brasil.

    Science.gov (United States)

    Silva-Costa, Aline; Rotenberg, Lucia; Coeli, Claudia Medina; Nobre, Aline Araújo; Griep, Rosane Härter

    2016-01-01

    Night work has been suggested as a risk factor for diabetes. Individuals with high triglyceride levels, high LDL cholesterol, low HDL cholesterol and obesity, especially abdominal obesity, have a greater chance of developing diabetes. The aim of this study was to analyze glycemic levels, total cholesterol, HDL-C, LDL-C, triglycerides and the anthropometric alterations that precede diabetes, considering their possible association with nigh work among a non-diabetic population. Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) comprises of 15,105 civil servants (35-74 years old) at baseline (2008-2010). The following parameters were analyzed: serum cholesterol (total cholesterol, HDL-C, LDL-C), triglycerides and glucose drawn from 12-hour fasting blood sample, glycated hemoglobin and 2-hour plasma glucose obtained after a 75 g oral glucose tolerance test, BMI, hip and waist measurements using standard equipment and techniques. Participants with diabetes, retired workers and day workers with previous experience of night work were excluded. Generalized linear models, a gamma regression model with an identity link function, were performed to test the association of night work with metabolic and anthropometric variables. The study sample consisted of 3918 men and 4935 women; 305 (7.8%) and 379 (7.7%) of the participants were men and women who worked at night, respectively. Among the men, the exposure to night work was associated with an increase in BMI (b-value = 0.542; p = 0.032) and waist circumference (b-value = 1.66; p = 0.014). For women, increased fasting plasma glucose (b-value = 2.278; p < 0.001), glycated hemoglobin (b-value = 0.099, p < 0.001) and 2 hour plasma glucose (b-value = 5.479, p = 0.001) were associated with night work after adjustments. No significant associations between night work and triglycerides, LDL-C, HDL-C, total cholesterol levels or waist-hip ratio were found. The influences of night work on metabolic and anthropometric factors

  6. Night work is associated with glycemic levels and anthropometric alterations preceding diabetes: Baseline results from ELSA-Brasil.

    Science.gov (United States)

    Silva-Costa, Aline; Rotenberg, Lucia; Coeli, Claudia Medina; Nobre, Aline Araújo; Griep, Rosane Härter

    2016-01-01

    Night work has been suggested as a risk factor for diabetes. Individuals with high triglyceride levels, high LDL cholesterol, low HDL cholesterol and obesity, especially abdominal obesity, have a greater chance of developing diabetes. The aim of this study was to analyze glycemic levels, total cholesterol, HDL-C, LDL-C, triglycerides and the anthropometric alterations that precede diabetes, considering their possible association with nigh work among a non-diabetic population. Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) comprises of 15,105 civil servants (35-74 years old) at baseline (2008-2010). The following parameters were analyzed: serum cholesterol (total cholesterol, HDL-C, LDL-C), triglycerides and glucose drawn from 12-hour fasting blood sample, glycated hemoglobin and 2-hour plasma glucose obtained after a 75 g oral glucose tolerance test, BMI, hip and waist measurements using standard equipment and techniques. Participants with diabetes, retired workers and day workers with previous experience of night work were excluded. Generalized linear models, a gamma regression model with an identity link function, were performed to test the association of night work with metabolic and anthropometric variables. The study sample consisted of 3918 men and 4935 women; 305 (7.8%) and 379 (7.7%) of the participants were men and women who worked at night, respectively. Among the men, the exposure to night work was associated with an increase in BMI (b-value = 0.542; p = 0.032) and waist circumference (b-value = 1.66; p = 0.014). For women, increased fasting plasma glucose (b-value = 2.278; p < 0.001), glycated hemoglobin (b-value = 0.099, p < 0.001) and 2 hour plasma glucose (b-value = 5.479, p = 0.001) were associated with night work after adjustments. No significant associations between night work and triglycerides, LDL-C, HDL-C, total cholesterol levels or waist-hip ratio were found. The influences of night work on metabolic and anthropometric factors

  7. Cortisol, reaction time test and health among offshore shift workers

    DEFF Research Database (Denmark)

    Harris, Anette; Waage, Siri; Ursin, Holger;

    2010-01-01

    The stress hormone cortisol shows a pronounced endogenous diurnal rhythm, which is affected by the sleep/wake cycle, meals and activity. Shift work and especially night work disrupts the sleep/wake cycle and causes a desynchronization of the natural biological rhythms. Therefore, different shift ...

  8. Genetics Home Reference: autosomal dominant congenital stationary night blindness

    Science.gov (United States)

    ... stationary night blindness autosomal dominant congenital stationary night blindness Enable Javascript to view the expand/collapse boxes. ... Close All Description Autosomal dominant congenital stationary night blindness is a disorder of the retina , which is ...

  9. Genetics Home Reference: X-linked congenital stationary night blindness

    Science.gov (United States)

    ... stationary night blindness X-linked congenital stationary night blindness Enable Javascript to view the expand/collapse boxes. ... Close All Description X-linked congenital stationary night blindness is a disorder of the retina , which is ...

  10. Evolution of the ATLAS Nightly Build System

    CERN Document Server

    Undrus, A; The ATLAS collaboration

    2012-01-01

    For over 10 years of development the ATLAS Nightly Build System has evolved into a factory for automatic release production and grid distribution. The numerous branches of ATLAS releases provide vast opportunities for testing new packages, verification of patches to existing software, and migration to new platforms and compilers for ATLAS code that currently contains ~2200 packages with 4 million C++ and 1.4 million python scripting lines written by ~1000 developers. The nightly releases lead up to stable releases used for data processing and analysis worldwide. The ATLAS Nightly System is managed by the NICOS control tool on the ATLAS Build Farm. The ATN testing framework runs unit and integration tests for the nightly releases.

  11. Evolution of the ATLAS Nightly Build System

    CERN Document Server

    Undrus, A

    2012-01-01

    The ATLAS Nightly Build System is a major component in the ATLAS collaborative software organization, validation, and code approval scheme. For over 10 years of development it has evolved into a factory for automatic release production and grid distribution. The 50 multi-platform branches of ATLAS releases provide vast opportunities for testing new packages, verification of patches to existing software, and migration to new platforms and compilers for ATLAS code that currently contains 2200 packages with 4 million C++ and 1.4 million python scripting lines written by about 1000 developers. Recent development was focused on the integration of ATLAS Nightly Builds and Installation systems. The nightly releases are distributed and validated and some are transformed into stable releases used for data processing worldwide. The ATLAS Nightly System is managed by the NICOS control tool on a computing farm with 50 powerful multiprocessor nodes. NICOS provides the fully automated framework for the release builds, test...

  12. TBT recommends : Courtney Pine. Hansa disco night

    Index Scriptorium Estoniae

    2005-01-01

    Inglise jazzsaksofonisti Courtney Pine heliplaadi "Resistance" esitluskontserdist 15. dets. Rock Cafés Tallinnas. Inglise laulja Chris Norman läti ansamblitega üritusel "Hansa disco night Nr.4" 9. dets. Kipsala Hallis Riias

  13. Night Activity Reduction is a Signature Physiological Biomarker for Duchenne Muscular Dystrophy Dogs

    Science.gov (United States)

    Hakim, Chady H.; Peters, Austin A.; Feng, Feng; Yao, Gang; Duan, Dongsheng

    2016-01-01

    Background Duchenne muscular dystrophy (DMD) is an X-linked lethal muscle disease. Dystrophic dogs are excellent models to test novel therapies for DMD. However, the use of the dog model has been hindered by the lack of an effective method to evaluate whole-body mobility. We recently showed that night activity is a good indicator of dog mobility. However, our published method relies on frame-by-frame manual processing of a 12-hour video for each dog. This labor-intensive and time-consuming approach makes it unrealistic to use this assay as a routine outcome measurement. Objective To solve this problem, we developed an automatic video-capturing/imaging processing system. The new system reduces the data analysis time over 1,000 fold and also provides a more detailed activity profile of the dog. Methods Using the new system, we analyzed more than 120 twelve-hour recordings from 12 normal and 22 affected dogs. Results We observed similar activity profiles during repeated recording of the same dog. Throughout the night, normal dogs were in motion 10.4 ± 0.9% of the time while affected dogs were in motion 4.6 ± 0.2% of the time (p < 0.0001). Further, normal dogs made significantly more movements (p < 0.0001) while affected dogs rested significantly longer (p < 0.0001) during the period of recording (from 6 pm to 6 am next day). Importantly, statistical significance persisted irrespective of the coat color, gender and mutation type. Conclusions Our results suggest that night activity reduction is a robust, quantitative physiological biomarker for dystrophic dogs. The new system may be applicable to study mobility in other species.

  14. Night cough and general practice research.

    Science.gov (United States)

    Toop, L J; Howie, J G; Paxton, F M

    1986-02-01

    Thirty-four children, aged between three and nine years, presenting with nocturnal cough, were studied on successive nights using an automatic voice activated tape recorder system. Children with a family history of atopy coughed significantly more than children without such a family history. A wide variation in cough frequency was found both between and within subjects. No effects of treatment on cough frequency were demonstrated. Some of the physiological and pathological mechanisms underlying night cough are discussed.

  15. Admission medical records made at night time have the same quality as day and evening time records

    DEFF Research Database (Denmark)

    Amirian, Ilda; Mortensen, Jacob F; Rosenberg, Jacob;

    2014-01-01

    INTRODUCTION: A thorough and accurate admission medical record is an important tool in ensuring patient safety during the hospital stay. Surgeons' performance might be affected during night shifts due to sleep deprivation. The aim of the study was to assess the quality of admission medical records....... CONCLUSION: Night time deterioration was not seen in the quality of the medical records. FUNDING: The study was supported financially by the Tryg Foundation Denmark and The Danish Medical Association. TRIAL REGISTRATION: not relevant....

  16. Shifting densities

    OpenAIRE

    Mille, Matthieu

    2000-01-01

    In this paper, the author adopt a time-geography approach to examine the temporal variation of urban density by analysing spatial load changes at different times of the day at the communal and community level. The evolution of means of transport coupled with the abandon of the notion of direct proximity to the urban dwelling place provide the basis for this new approach to the study of urban densities. The shift towards spatial specialisation within cities has lead to radical changes in the f...

  17. Night work and health of nurses and midviwes – A review

    Directory of Open Access Journals (Sweden)

    Weronika Burdelak

    2013-06-01

    Full Text Available Night shift work has been thought to play a role in the etiology of chronic diseases through a disruption of the circadian rhythm, decreased synthesis of melatonin and sleep deprivation. Our aim was to review the epidemiological studies on the association between night shift work and some pathologies in nurses and midwives. We reviewed publications available in the MEDLINE database and published before June 2012, describing the cross-sectional (almost two thirds of all papers and cohort studies. In total, we identified 26 original papers, including 5 epidemiological studies addressing diseases or disorders of the digestive system, 3 - metabolic syndrome, 2 - diabetes type 2, 9 - cardiovascular diseases and CVD risk factors, 5 - obesity/overweight, 2 - menstrual disorders and 3 - poor pregnancy outcomes. The analysis of the literature indicates that night shift work of nurses and midwives is most strongly associated with a higher risk of obesity/overweight. In each of the five studies, which we identified this association was observed (confirmed by the statistical significance of the results, also after adjustment for confounders. The results for diabetes type 2 and disorders of the menstrual cycle are also suggestive. Epidemiological data on the other disorders or pathologies discussed in this article seem to be less certain - their results are inconsistent or their number is too small to draw definite conclusions. Further epidemiological studies of nurses and midwives working on night shifts and prospective observations in particular are recommended to find out whether potential association between the night work and discussed health issues is causal. Med Pr 2013;64(3:397–418

  18. Quality of life in shift work syndrome.

    Science.gov (United States)

    Puca, F M; Perrucci, S; Prudenzano, M P; Savarese, M; Misceo, S; Perilli, S; Palumbo, M; Libro, G; Genco, S

    1996-01-01

    Air Force radar controllers represent an excellent example of night shift workers, as they are obliged to demonstrate perfect alertness during working hours. We set out: a) to assess the quality of life in these shift workers; b) to identify those with shift work syndrome and c) to evaluate the possible effects of triazolam both on their quality of life and sleep. The results reveal an impairment of the quality of life in shift workers, independently of the presence of a circadian rhythm sleep disorder. Quality of life was more severely impaired in subjects with circadian rhythm sleep disorder. Hypnotic therapy brought about an improvement both in the sleep disorder and in the quality of life of subjects affected by shift work syndrome. Selective alertness tests failed to demonstrate any "sedative carry-over" in the treated patients.

  19. True-color night vision cameras

    Science.gov (United States)

    Kriesel, Jason; Gat, Nahum

    2007-04-01

    This paper describes True-Color Night Vision cameras that are sensitive to the visible to near-infrared (V-NIR) portion of the spectrum allowing for the "true-color" of scenes and objects to be displayed and recorded under low-light-level conditions. As compared to traditional monochrome (gray or green) night vision imagery, color imagery has increased information content and has proven to enable better situational awareness, faster response time, and more accurate target identification. Urban combat environments, where rapid situational awareness is vital, and marine operations, where there is inherent information in the color of markings and lights, are example applications that can benefit from True-Color Night Vision technology. Two different prototype cameras, employing two different true-color night vision technological approaches, are described and compared in this paper. One camera uses a fast-switching liquid crystal filter in front of a custom Gen-III image intensified camera, and the second camera is based around an EMCCD sensor with a mosaic filter applied directly to the sensor. In addition to visible light, both cameras utilize NIR to (1) increase the signal and (2) enable the viewing of laser aiming devices. The performance of the true-color cameras, along with the performance of standard (monochrome) night vision cameras, are reported and compared under various operating conditions in the lab and the field. In addition to subjective criterion, figures of merit designed specifically for the objective assessment of such cameras are used in this analysis.

  20. NVG-the-day: Towards realistic night-vision training

    NARCIS (Netherlands)

    Hogervorst, M.A.; Kooi, F.L.

    2014-01-01

    Current night-time training using (flight-, driving-) simulators is hindered by the lack of realism. Effective night-time training requires the simulation of the illusions and limitations experienced while wearing Night Vision Goggles during the night. Various methods exist that capture certain sens

  1. How to reduce circadian misalignment in rotating shift workers

    Directory of Open Access Journals (Sweden)

    Eastman CI

    2016-07-01

    Full Text Available Charmane I EastmanBiological Rhythms Research Laboratory, Behavioral Sciences Department, Rush University Medical Center, Chicago, IL, USAI have often thought that rapidly rotating shift work schedules that include night shifts should be abolished and replaced with fixed shifts. But maybe I was wrong, I used to think that there is no way to reduce the circadian misalignment between the master internal circadian clock (and thus all the circadian rhythms of the body and the times for sleeping, working, and eating, because the circadian clock cannot reset (phase shift fast enough to keep up with rapidly rotating shift work schedules.

  2. Admission medical records made at night time have the same quality as day and evening time

    DEFF Research Database (Denmark)

    Amirian, Ilda; Mortensen, Jacob F; Rosenberg, Jacob;

    2014-01-01

    INTRODUCTION: A thorough and accurate admission medical record is an important tool in ensuring patient safety during the hospital stay. Surgeons' performance might be affected during night shifts due to sleep deprivation. The aim of the study was to assess the quality of admission medical records...... during day, evening and night time. MATERIAL AND METHODS: A total of 1,000 admission medical records were collected from 2009 to 2013 based equally on four diagnoses: mechanical bowel obstruction, appendicitis, gallstone disease and gastrointestinal bleeding. The records were reviewed for errors by a pre......-defined checklist based on Danish standards for admission medical records. The time of dictation for the medical record was registered. RESULTS: A total of 1,183 errors were found in 778 admission medical records made during day- and evening time, and 322 errors in 222 admission medical records from night time...

  3. Multitudes attend the Night of Science

    CERN Multimedia

    2006-01-01

    The Night of Science, which took place in the Parc de la Perle du Lac in Geneva last weekend, was a great success, with 30 000 visitors attending according to the organisers. Many curious people flocked to the stands and animations until late on Saturday night and all afternoon on Sunday. The CERN stand (photo) received a great amount of interest from participants. Both kids and adults discovered the activities of the Laboratory and the data-processing revolution initiated by CERN, from the Web to the Computing Grid. Hats off to the CERN collaborators in the Communication Group and IT Department who made this event a success.

  4. Strain and health implications of nurses’ shift work

    Directory of Open Access Journals (Sweden)

    Alessandra Buja

    2013-08-01

    Full Text Available Objectives: The study investigated whether nurses' different working schedules are associated with different levels of job-relatd strain, health symptoms and behavior. No reports have been accessible in the relevant literature on the possible association between shift work and job-related strain in nurses. Materials and Methods: This was a cross-sectional study conducted at a large university hospital in North-East Italy, involving 806 nurses working in selected departments. A multilevel logistic regression was applied to assess the association between work shift conditions and selected outcomes. Results: Night shifts were associated not only with higher odds of having a high Job Demand, but also with lower odds of having a high Decision Authority and consequently with a stronger likelihood of having higher levels of Job Strain (high Job Demand score≥ 38 and Low Decision Authority. The night shift was associated with various symptoms, particularly exhaustion (p = 0.039 and gastric pain (p = 0.020. Nurses' working schedules did not affect their job satisfaction scores. Conclusions: It has been confirmed that night shifts are a risk factor for nurses' health perception and working night shifts carries a considerable degree of strain. This is a condition that hospital nursing managements need to consider carefully to avoid burnout in nursing personnel and prevent an excessive turnover in this profession, which is a recurring problem for health care organizations.

  5. COMBINING SCENE MODEL AND FUSION FOR NIGHT VIDEO ENHANCEMENT

    Institute of Scientific and Technical Information of China (English)

    Li Jing; Yang Tao; Pan Quan; Cheng Yongmei

    2009-01-01

    This paper presents a video context enhancement method for night surveillance. The basic idea is to extract and fuse the meaningful information of video sequence captured from a fixed camera under different illuminations. A unique characteristic of the algorithm is to separate the image context into two classes and estimate them in different ways. One class contains basic surrounding scene information and scene model, which is obtained via background modeling and object tracking in daytime video sequence. The other class is extracted from nighttime video, including frequently moving region, high illumination region and high gradient region. The scene model and pixel-wise difference method are used to segment the three regions. A shift-invariant discrete wavelet based image fusion technique is used to integral all those context information in the final result. Experiment results demonstrate that the proposed approach can provide much more details and meaningful information for nighttime video.

  6. Adaptation to Shift Work: Physiologically Based Modeling of the Effects of Lighting and Shifts’ Start Time

    OpenAIRE

    Svetlana Postnova; Robinson, Peter A.; Dmitry D Postnov

    2013-01-01

    Shift work has become an integral part of our life with almost 20% of the population being involved in different shift schedules in developed countries. However, the atypical work times, especially the night shifts, are associated with reduced quality and quantity of sleep that leads to increase of sleepiness often culminating in accidents. It has been demonstrated that shift workers' sleepiness can be improved by a proper scheduling of light exposure and optimizing shifts timing. Here, an in...

  7. Why Is the Sky Dark at Night?

    Science.gov (United States)

    Stinner, Arthur

    2014-01-01

    The puzzle as to just why the sky is dark at night, given that there are so many stars, has been around at least since Newton. This article summarizes six cosmological models that have been used to attempt to give an account of this puzzle including the Copernican universe, the Newton-Halley universe, the nineteenth century "one galaxy"…

  8. Urban planning and traffic safety at night

    Science.gov (United States)

    Ispas, N.; Trusca, D.

    2016-08-01

    Urban planning including traffic signs serve vital functions, providing road users with regulatory, warning and guidance information about the roadway and surrounding environment. There are a large number of signs and even more guidelines on how these signs should be designed, installed, and maintained in concordance with on road surface traffic signs. More requirements for signs are made for night urban traffic, including appearance (size, shape, colour), placement (height, lateral, and longitudinal), maintenance (visibility, position, damage) and signs light and retroreflective. In the night, traffic signs visibility can interact by on pedestrian visibility and diminish urban traffic safety. The main aim of this paper are the scientific determination of an urban specific zone visibility for evaluate at night real conditions in case of a traffic accident in the Braşov city area. The night visibility study was made using PC-Rect version 4.2. Other goal of the paper was to modify some urban planning solution in order to increase the urban safety in Brașov.

  9. Science by night – it's magic!

    CERN Document Server

    CERN Bulletin

    2010-01-01

    The control rooms of the LHC and its experiments threw open their doors to 150 youngsters on European Researchers Night and the place was buzzing with excitement all evening!    It's just possible that a few scientists' vocations were born last Friday night, as the sixth European Researchers Night took place across Europe. CERN was taking part for the first time and invited young people aged from 12 to 19 into the control rooms of the LHC machine and five experiments. From 5.00 in the afternoon until 1.00 in the morning, 150 youngsters and physics teachers got the opportunity to sit with scientists at the controls of the accelerator and experiments. This meeting of minds went down very well for all concerned, the scientists being only too happy to wax lyrical about their passion. The youngsters were thrilled with their visit and amazed at being allowed so close to the controls of these mighty machines. The night-time setting added an extra touch of magic to the whole event. Some just could...

  10. Portable real-time color night vision

    NARCIS (Netherlands)

    Toet, A.; Hogervorst, M.A.

    2008-01-01

    We developed a simple and fast lookup-table based method to derive and apply natural daylight colors to multi-band night-time images. The method deploys an optimal color transformation derived from a set of samples taken from a daytime color reference image. The colors in the resulting colorized mul

  11. Behavioral management of night eating disorders

    Directory of Open Access Journals (Sweden)

    Berner LA

    2013-03-01

    Full Text Available Laura A Berner,1 Kelly C Allison2 1Department of Psychology, Drexel University, 2Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA Abstract: Night eating syndrome (NES is a form of disordered eating associated with evening hyperphagia (overeating at night and nocturnal ingestions (waking at night to eat. As with other forms of disordered eating, cognitive and behavioral treatment modalities may be effective in reducing NES symptoms. This review presents evidence for a variety of behavioral treatment approaches, including behavioral therapy, phototherapy, behavioral weight loss treatment, and cognitive-behavioral therapy. A more detailed overview of cognitive-behavioral therapy for NES is provided. All of these studies have been case studies or included small samples, and all but one have been uncontrolled, but the outcomes of many of these approaches are promising. Larger randomized controlled trials are warranted to advance NES treatment literature. With the inclusion of NES in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5 as a “Feeding or Eating Disorder Not Elsewhere Classified,” more sophisticated, empirically-supported, behaviorally-based treatment approaches are much needed. Keywords: night eating syndrome, cognitive-behavioral treatment, phototherapy, behavioral weight loss, behavior therapy

  12. Family Literacy Night: A Celebration of Reading!

    Science.gov (United States)

    Campbell, Becky; Morton, Shirley; Rumschlag, Hella

    2011-01-01

    Family Literacy Night is an exciting way to engage students and their parents in meaningful literacy activities while building community spirit and strengthening the partnership between school and home. It is an opportunity for students to show their parents what they do in school; how they create in the computer lab, how they work in the art…

  13. Invite an Alien to Astronomy Night

    Science.gov (United States)

    Governor, Donna; Richwine, Pebble

    2007-01-01

    Dozens of inflatable aliens recently "descended" upon the authors' middle school to kick-off their first school-wide Astronomy night. With an estimated attendance of over 500, their eighth-grade students hosted over a dozen activity-rich sessions designed to entertain and educate students and their families about the wonders of the solar system…

  14. Family Math Night: Math Standards in Action

    Science.gov (United States)

    Taylor-Cox, Jennifer

    2005-01-01

    Why should your school have a Family Math Night?: (1) Help students learn essential math concepts; (2) Give parents a chance to serve as models of motivation, persistence and competence; and (3) Promote math success in a supportive setting. With its step-by-step directions and suggestions for both teachers and parents, this book takes the worry…

  15. Globe at Night - Sky Brightness Monitoring Network

    Science.gov (United States)

    Cheung, Sze Leung; Pun, Jason Chun Shing; SO, Chu-wing; Shibata, Yukiko; Walker, Constance Elaine; Agata, Hidehiko

    2015-08-01

    The Global at Night - Sky Brightness Monitoring Network (GaN-MN) is an international project for long-term monitoring of night sky conditions around the world. The GaN-MN consists of fixed monitoring stations each equipped with a Sky Quality Meter - Lensed Ethernet (SQM-LE), which is a specialized light sensor for night sky brightness (NSB) measurement. NSB data are continuously collected at high sampling frequency throughout the night, and these data will be instantly made available to the general public to provide a real-time snapshot of the global light pollution condition. A single data collection methodology, including data sampling frequency, data selection criteria, device design and calibration, and schemes for data quality control, was adopted to ensure uniformity in the data collected. This is essential for a systematic and global study of the level of light pollution. The data collected will also provide the scientific backbone in our efforts to contribute to dark sky conservation through education to the general public and policy makers. The GaN-MN project is endorsed by the IAU IYL Executive Committee Working Group as a major Cosmic Light program in the International Year of Light.

  16. What's crucial in night vision goggle simulation ?

    NARCIS (Netherlands)

    Kooi, F.L.; Toet, A.

    2005-01-01

    Training is required to correctly interpret NVG imagery. Training night operations with simulated intensified imagery has great potential. Compared to direct viewing with the naked eye, intensified imagery is relatively easy to simulate and the cost of real NVG training is high (logistics, risk, civ

  17. [Restrictions on night work: analysis of case studies in a large Lombardy Hospital].

    Science.gov (United States)

    Bacis, M; Cologni, L; Belotti, L; Mosconi, G

    2012-01-01

    A high percentage of the division's doctors and employees work at night to guarantee urgent assistance and diagnostic services to patients. Night work is not recommended for persons with rather serious case histories due to the disruption of circadian rhythms or the increased workload required of certain operators during nighttime hours. All of the evaluations of health operators with a limited capacity to work on the night shift in our hospital were analysed, except for female workers restricted from night work during pregnancy or puerperium, as provisioned by the regulation that protects working mothers. Forty-two cases were considered (six physicians and 36 operators in the division) out of a total of 2676 employees assigned to night work and the conditions that led to the formulation of the decision are divided as follows: 16 Mental disturbances currently subject to treatment (depression, post-traumatic anxiety disorder, primary insomnia...), 8 Tumours (breast, colon, Ewing Sarcoma), 7 Neurological disorders (multiple sclerosis, myasthenia), 6 Cardiovascular disease (previous IMA; arrhythmias, arterial hypertension not controlled by theraphy) and 5 others patologies (total 45). The cases will be analysed in detail with an analysis of the characteristics of the exempt group of workers and with reference to the temporary or indefinite nature of the exemption. PMID:23405636

  18. Evolution of the ATLAS Nightly Build System

    Science.gov (United States)

    Undrus, A.

    2012-12-01

    The ATLAS Nightly Build System is a major component in the ATLAS collaborative software organization, validation, and code approval scheme. For over 10 years of development it has evolved into a factory for automatic release production and grid distribution. The 50 multi-platform branches of ATLAS releases provide vast opportunities for testing new packages, verification of patches to existing software, and migration to new platforms and compilers for ATLAS code that currently contains 2200 packages with 4 million C++ and 1.4 million python scripting lines written by about 1000 developers. Recent development was focused on the integration of ATLAS Nightly Build and Installation systems. The nightly releases are distributed and validated and some are transformed into stable releases used for data processing worldwide. The ATLAS Nightly System is managed by the NICOS control tool on a computing farm with 50 powerful multiprocessor nodes. NICOS provides the fully automated framework for the release builds, testing, and creation of distribution kits. The ATN testing framework of the Nightly System runs unit and integration tests in parallel suites, fully utilizing the resources of multi-core machines, and provides the first results even before compilations complete. The NICOS error detection system is based on several techniques and classifies the compilation and test errors according to their severity. It is periodically tuned to place greater emphasis on certain software defects by highlighting the problems on NICOS web pages and sending automatic e-mail notifications to responsible developers. These and other recent developments will be presented and future plans will be described.

  19. Evolution of the ATLAS Nightly Build System

    International Nuclear Information System (INIS)

    The ATLAS Nightly Build System is a major component in the ATLAS collaborative software organization, validation, and code approval scheme. For over 10 years of development it has evolved into a factory for automatic release production and grid distribution. The 50 multi-platform branches of ATLAS releases provide vast opportunities for testing new packages, verification of patches to existing software, and migration to new platforms and compilers for ATLAS code that currently contains 2200 packages with 4 million C++ and 1.4 million python scripting lines written by about 1000 developers. Recent development was focused on the integration of ATLAS Nightly Build and Installation systems. The nightly releases are distributed and validated and some are transformed into stable releases used for data processing worldwide. The ATLAS Nightly System is managed by the NICOS control tool on a computing farm with 50 powerful multiprocessor nodes. NICOS provides the fully automated framework for the release builds, testing, and creation of distribution kits. The ATN testing framework of the Nightly System runs unit and integration tests in parallel suites, fully utilizing the resources of multi-core machines, and provides the first results even before compilations complete. The NICOS error detection system is based on several techniques and classifies the compilation and test errors according to their severity. It is periodically tuned to place greater emphasis on certain software defects by highlighting the problems on NICOS web pages and sending automatic e-mail notifications to responsible developers. These and other recent developments will be presented and future plans will be described.

  20. Potential for passive cooling of buildings by night-time ventilation in present and future climates in Europe

    DEFF Research Database (Denmark)

    Artmann, Nikolai; Manz, Heinrich; Heiselberg, Per

    2006-01-01

    Given the general shift in recent decades towards a lower heating and higher cooling demand for buildings in many European countries, passive cooling by night-time ventilation has come to be seen as a promising option, particularly in the moderate or cold climates of Central, Eastern and Northern...... Europe. The basic concept involves cooling the building structure overnight in order to provide a heat sink that is available during the occupancy period. In this study, the potential for the passive cooling of buildings by night-time ventilation is evaluated by analysing climatic data, irrespective......-time ventilative cooling over the whole of Northern Europe and a still significant potential in Central, Eastern and even some regions of Southern Europe. However, given the inherent stochastic properties of weather patterns, series of warmer nights can occur at some locations, where passive cooling by night...

  1. Teens of the Night - The Young Night Drifters in Hong Kong

    OpenAIRE

    Lee, FWL

    2000-01-01

    This article describes a recent study on young night drifters in Hong Kong, which is currently an alarming youth problem in the territory. The social background, subculture, and problems faced by these young people are introduced. Employing an environmental perspective, the causes of their night-drifting behavior are suggested. In addition, the identified service needs of, and proposed services for, these young people are also presented. It is believed that this study has implications for you...

  2. Shift Work and Endocrine Disorders

    Directory of Open Access Journals (Sweden)

    M. A. Ulhôa

    2015-01-01

    Full Text Available The objective of this review was to investigate the impact of shift and night work on metabolic processes and the role of alterations in the sleep-wake cycle and feeding times and environmental changes in the occurrence of metabolic disorders. The literature review was performed by searching three electronic databases for relevant studies published in the last 10 years. The methodological quality of each study was assessed, and best-evidence synthesis was applied to draw conclusions. The literature has shown changes in concentrations of melatonin, cortisol, ghrelin, and leptin among shift workers. Melatonin has been implicated for its role in the synthesis and action of insulin. The action of this hormone also regulates the expression of transporter glucose type 4 or triggers phosphorylation of the insulin receptor. Therefore, a reduction in melatonin can be associated with an increase in insulin resistance and a propensity for the development of diabetes. Moreover, shift work can negatively affect sleep and contribute to sedentarism, unhealthy eating habits, and stress. Recent studies on metabolic processes have increasingly revealed their complexity. Physiological changes induced in workers who invert their activity-rest cycle to fulfill work hours include disruptions in metabolic processes.

  3. Illuminating the Nights in Rural Communities

    Directory of Open Access Journals (Sweden)

    Dr. Achara N

    2014-11-01

    Full Text Available Electric power supply in many cities in developing countries is erratic and can only be described as non-existent in the rural areas. Kerosene lantern, the main source of illuminating the night is associated with obnoxious fumes production and more especially the kerosene fuel is scarce to find. Rural dwellers who cannot afford the globed kerosene lanterns either use the locally fabricated globeless kerosene lanterns, ―atunja‖ or log fire. Log fire is associated with deforestation and desert encroachment. A solar lantern has been designed and built for illuminating the nights in rural communities. Battery and LED are part of the components used and it is recommended that appropriate safety measures are put in place not only in use but also in their disposal.

  4. Geneva motorway bypass closed for two nights

    CERN Document Server

    2006-01-01

    The carriageways heading towards France on the airport section of the motorway will be closed from 8.30 p.m. to 5.00 a.m. in the night of 1 to 2 October and those heading towards Lausanne during the same hours in the night of 2 to 3 October. This is to allow dry-surface road-marking and signage work to be performed. The work will be postponed in the event of bad weather, in which case the new date will be announced on Radio RSR and Radio Lac as well as on the telephone traffic news service 163. Diversions will be in operation. Thank you in advance for your understanding. For further information, tel. 163 or www.autoroute-aeroport.ch Civil Engineering Department, DCTI, State of Geneva

  5. The volunteer programme ‘Night Ravens’:

    DEFF Research Database (Denmark)

    Larsen, Britt Østergaard; Bendix Kleif, Helle; Kolodziejczyk, Christophe

    2015-01-01

    with NR organizations to districts without NR organizations. The results show no difference in the crime rates between Danish postcode districts with and without the NR programme. Hence, we cannot identify positive effects of situational crime prevention when evaluating this Scandinavian volunteer......The volunteer programme ‘Night Ravens’ (NR) was founded in Sweden in 1987 and has, over the years, developed into a Scandinavian concept covering large areas of Sweden, Denmark, Norway, Greenland and the Faroe Islands. The NR programme is a crime prevention initiative with adults walking...... the streets at night in identifiable ‘uniforms’ in areas with high activity. The purpose of this study is to evaluate the effects of the NR programme in Denmark based on a volunteer set-up with a less intrusive approach to situational crime prevention than, for instance, hot spot policing. The analyses...

  6. Cormorants dive through the Polar night.

    Science.gov (United States)

    Grémillet, David; Kuntz, Grégoire; Gilbert, Caroline; Woakes, Antony J; Butler, Patrick J; le Maho, Yvon

    2005-12-22

    Most seabirds are visual hunters and are thus strongly affected by light levels. Dependence on vision should be problematic for species wintering at high latitudes, as they face very low light levels for extended periods during the Polar night. We examined the foraging rhythms of male great cormorants (Phalacrocorax carbo) wintering north of the Polar circle in West Greenland, conducting the first year-round recordings of the diving activity in a seabird wintering at high latitudes. Dive depth data revealed that birds dived every day during the Arctic winter and did not adjust their foraging rhythms to varying day length. Therefore, a significant proportion of the dive bouts were conducted in the dark (less than 1 lux) during the Polar night. Our study underlines the stunning adaptability of great cormorants and raises questions about the capacity of diving birds to use non-visual cues to target fish. PMID:17148235

  7. The Mythology of the Night Sky

    Science.gov (United States)

    Falkner, David E.

    The word "planet" comes from the Latin word planeta and the Greek word planes, which means "wanderer." When the ancient Greeks studied the night sky they noticed that most of the stars remained in the same position relative to all the other stars, but a few stars seem to move in the sky from day to day, week to week, and month to month. The Greeks called these rogue stars "wanderers" because they wandered through the starry background.

  8. The conformal transformation of the night sky

    CERN Document Server

    Minguzzi, E

    2016-01-01

    We give a simple differential geometric proof of the conformal transformation of the night sky under change of observer. The proof does not rely on the four dimensionality of spacetime or on spinor methods. Furthermore, it really shows that the result does not depend on Lorentz transformations. This approach, by giving a transparent covariant expression to the conformal factor, shows that in most situations it is possible to define a thermal sky metric independent of the observer.

  9. CMS Virtual Visit - Researchers Night in Portugal

    CERN Document Server

    Abreu, Pedro

    2016-01-01

    Researchers Night at Planetarium Calouste Gulbenkian - Ciência Viva Centre in Lisbon. Organised by researchers from LIP (Laboratório de Instrumentação e Física Experimental de Partículas) and including CMS Virtual Visit during which André David Tinoco Mendez and José Rasteiro da Silva, based at Cessy, France, "virtually" discussed science and technology behind the CMS detector with the audience in Lisbon.

  10. Is global warming mostly at night?

    International Nuclear Information System (INIS)

    The release of greenhouse gases is expected to lead to substantial future warming. The global mean temperature has indeed risen in recent decades. The causes of the observed warming, and its relation to the greenhouse gas buildup are, however, still debated. One important aspect of the observed temperature change relates to its asymmetry during the day and night. The day-night temperature difference over land in North America, most of Eurasia, Oceania, and portions of Africa and Australia shows a decrease since about 1950. The changes of the daily mean temperature in these areas are principally due to the rising night or early morning temperature, and are accompanied by increasing cloudiness. Their results support the notion that the increase of cloud cover, possibly due to industrial sulfur emissions, mitigates the greenhouse warming. The causes of the changing diurnal temperature range and of the increasing cloudiness will have to be clarified and the future SO2 emissions reliably projected before any trustworthy prediction of future climates can be made. 37 refs., 7 figs., 2 tabs

  11. Agomelatine Efficacy in the Night Eating Syndrome

    Directory of Open Access Journals (Sweden)

    Walter Milano

    2013-01-01

    Full Text Available Night eating syndrome (NES is a nosographic entity included among the forms not otherwise specified (EDNOS in eating disorders (ED of the DSM IV. It is characterized by a reduced food intake during the day, evening hyperphagia, and nocturnal awakenings associated with conscious episodes of compulsive ingestion of food. Frequently, NES patients show significant psychopathology comorbidity with affective disorders. This paper describes a case report of an NES patient treated with agomelatine, an antidepressant analogue of melatonin, which acts by improving not only the mood but also by regulating sleep cycles and appetite. After three months of observation, the use of Agomelatine not only improved the mood of our NES patient (assessed in the HAM-D scores but it was also able to reduce the night eating questionnaire, by both reducing the number of nocturnal awakenings with food intake, the time of snoring, the minutes of movement during night sleep (assessed at polysomnography, and the weight (−5.5 kg and optimizing blood glucose and lipid profile. In our clinical case report, agomelatine was able both to reduce the NES symptoms and to significantly improve the mood of our NES patient without adverse side effects during the duration of treatment. Therefore, our case report supports the rationale for further studies on the use of Agomelatine in the NES treatment.

  12. Cold-night responses in grapevine inflorescences.

    Science.gov (United States)

    Sawicki, Mélodie; Ait Barka, Essaid; Clément, Christophe; Gilard, Françoise; Tcherkez, Guillaume; Baillieul, Fabienne; Vaillant-Gaveau, Nathalie; Jacquard, Cédric

    2015-10-01

    Cold nights impact grapevine flower development and fruit set. Regulation at the female meiosis stepmay be of considerable importance for further understanding on how flower reacts to cold stress. In this study, the impact of chilling temperature (0 °C overnight) on carbon metabolism was investigated in the inflorescencesof two cultivars, Pinot noir (Pinot) and Gewurztraminer (Gewurtz.). Fluctuations in photosynthetic activity and carbohydrate metabolism were monitored by analyzing gas exchanges, simultaneous photosystem I and II activities, andcarbohydrate content. Further, the expression of PEPc, PC, FNR, ISO, OXO, AGPase, amylases and invertase genes, activities of various enzymes, as well as metabolomic analysis were attained. Results showed that the chilling night has different impacts depending on cultivars. Thus, in Gewurtz., net photosynthesis (Pn) was transiently increased whereas, in Pinot, the Pn increase was persistent and concomitant with an inhibition of respiration. However, during the days following the cold night, photosynthetic activity was decreased, and the cyclic electron flow was inhibited in Gewurtz., suggesting lower efficient energy dissipation. Likewise, metabolomic analysis revealed that several metabolites contents (namely alanine, GABA, lysine and succinate)were distinctly modulated in the two cultivars. Taking together, these results reflect a photosynthetic metabolism alteration or internal CO2 conductance in Gewurtz. explaining partly why Pinot is less susceptible to cold stress. PMID:26398796

  13. Artificial light at night inhibits mating in a Geometrid moth

    NARCIS (Netherlands)

    van Geffen, Koert G.; van Eck, Emiel; de Boer, Rens A.; van Grunsven, Roy H.A.; Salis, Lucia; Berendse, Frank; Veenendaal, Elmar M.

    2015-01-01

    * Levels of artificial night lighting are increasing rapidly worldwide, subjecting nocturnal organisms to a major change in their environment. Many moth species are strongly attracted to sources of artificial night lighting, with potentially severe, yet poorly studied, consequences for development,

  14. Artificial light at night advances avian reproductive physiology

    OpenAIRE

    Dominoni, Davide; Quetting, Michael; Partecke, Jesko

    2013-01-01

    Artificial light at night is a rapidly increasing phenomenon and it is presumed to have global implications. Light at night has been associated with health problems in humans as a consequence of altered biological rhythms. Effects on wild animals have been less investigated, but light at night has often been assumed to affect seasonal cycles of urban dwellers. Using light loggers attached to free-living European blackbirds (Turdus merula), we first measured light intensity at night which fore...

  15. Disentangling the effects of insomnia and night work on cardiovascular diseases: a study in nursing professionals

    Directory of Open Access Journals (Sweden)

    A. Silva-Costa

    2015-02-01

    Full Text Available Cardiovascular diseases (CVDs are known to be associated with poor sleep quality in general populations, but they have not been consistently associated with specific work schedules. Studies of CVD generally do not simultaneously consider sleep and work schedules, but that approach could help to disentangle their effects. We investigated the association between insomnia and a self-reported physician diagnosis of CVD in day and night workers, considering all sleep episodes during nocturnal and diurnal sleep. A cross-sectional study was conducted in 1307 female nursing professionals from 3 public hospitals, using baseline data from the “Health and Work in Nursing - a Cohort Study.” Participants were divided into two groups: i day workers with no previous experience in night shifts (n=281 and whose data on insomnia were related to nocturnal sleep and ii those who worked exclusively at night (n=340 and had data on both nocturnal and diurnal sleep episodes, as they often sleep at daytime. Multiple logistic regression analysis was performed. Among day workers, insomnia complaints increased the odds of CVD 2.79-fold (95% CI=1.01-6.71 compared with workers who had no complaints. Among night workers, reports of insomnia during both nocturnal and diurnal sleep increased the odds of reported CVD 3.07-fold (95% CI=1.30-7.24. Workers with insomnia had similar probabilities of reporting CVD regardless of their work schedule, suggesting a relationship to insomnia and not to night work per se. The results also highlighted the importance of including evaluation of all sleep episodes (diurnal plus nocturnal sleep for night workers.

  16. Disentangling the effects of insomnia and night work on cardiovascular diseases: a study in nursing professionals

    International Nuclear Information System (INIS)

    Cardiovascular diseases (CVDs) are known to be associated with poor sleep quality in general populations, but they have not been consistently associated with specific work schedules. Studies of CVD generally do not simultaneously consider sleep and work schedules, but that approach could help to disentangle their effects. We investigated the association between insomnia and a self-reported physician diagnosis of CVD in day and night workers, considering all sleep episodes during nocturnal and diurnal sleep. A cross-sectional study was conducted in 1307 female nursing professionals from 3 public hospitals, using baseline data from the “Health and Work in Nursing - a Cohort Study.” Participants were divided into two groups: i) day workers with no previous experience in night shifts (n=281) and whose data on insomnia were related to nocturnal sleep and ii) those who worked exclusively at night (n=340) and had data on both nocturnal and diurnal sleep episodes, as they often sleep at daytime. Multiple logistic regression analysis was performed. Among day workers, insomnia complaints increased the odds of CVD 2.79-fold (95% CI=1.01-6.71) compared with workers who had no complaints. Among night workers, reports of insomnia during both nocturnal and diurnal sleep increased the odds of reported CVD 3.07-fold (95% CI=1.30-7.24). Workers with insomnia had similar probabilities of reporting CVD regardless of their work schedule, suggesting a relationship to insomnia and not to night work per se. The results also highlighted the importance of including evaluation of all sleep episodes (diurnal plus nocturnal sleep) for night workers

  17. Disentangling the effects of insomnia and night work on cardiovascular diseases: a study in nursing professionals

    Science.gov (United States)

    Silva-Costa, A.; Griep, R.H.; Rotenberg, L.

    2014-01-01

    Cardiovascular diseases (CVDs) are known to be associated with poor sleep quality in general populations, but they have not been consistently associated with specific work schedules. Studies of CVD generally do not simultaneously consider sleep and work schedules, but that approach could help to disentangle their effects. We investigated the association between insomnia and a self-reported physician diagnosis of CVD in day and night workers, considering all sleep episodes during nocturnal and diurnal sleep. A cross-sectional study was conducted in 1307 female nursing professionals from 3 public hospitals, using baseline data from the “Health and Work in Nursing - a Cohort Study.” Participants were divided into two groups: i) day workers with no previous experience in night shifts (n=281) and whose data on insomnia were related to nocturnal sleep and ii) those who worked exclusively at night (n=340) and had data on both nocturnal and diurnal sleep episodes, as they often sleep at daytime. Multiple logistic regression analysis was performed. Among day workers, insomnia complaints increased the odds of CVD 2.79-fold (95% CI=1.01-6.71) compared with workers who had no complaints. Among night workers, reports of insomnia during both nocturnal and diurnal sleep increased the odds of reported CVD 3.07-fold (95% CI=1.30-7.24). Workers with insomnia had similar probabilities of reporting CVD regardless of their work schedule, suggesting a relationship to insomnia and not to night work per se. The results also highlighted the importance of including evaluation of all sleep episodes (diurnal plus nocturnal sleep) for night workers. PMID:25424370

  18. Disentangling the effects of insomnia and night work on cardiovascular diseases: a study in nursing professionals

    Energy Technology Data Exchange (ETDEWEB)

    Silva-Costa, A. [Escola Nacional de Saúde Pública, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ (Brazil); Griep, R.H.; Rotenberg, L. [Laboratório de Educação em Ambiente e Saúde, Instituto Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ (Brazil)

    2014-11-21

    Cardiovascular diseases (CVDs) are known to be associated with poor sleep quality in general populations, but they have not been consistently associated with specific work schedules. Studies of CVD generally do not simultaneously consider sleep and work schedules, but that approach could help to disentangle their effects. We investigated the association between insomnia and a self-reported physician diagnosis of CVD in day and night workers, considering all sleep episodes during nocturnal and diurnal sleep. A cross-sectional study was conducted in 1307 female nursing professionals from 3 public hospitals, using baseline data from the “Health and Work in Nursing - a Cohort Study.” Participants were divided into two groups: i) day workers with no previous experience in night shifts (n=281) and whose data on insomnia were related to nocturnal sleep and ii) those who worked exclusively at night (n=340) and had data on both nocturnal and diurnal sleep episodes, as they often sleep at daytime. Multiple logistic regression analysis was performed. Among day workers, insomnia complaints increased the odds of CVD 2.79-fold (95% CI=1.01-6.71) compared with workers who had no complaints. Among night workers, reports of insomnia during both nocturnal and diurnal sleep increased the odds of reported CVD 3.07-fold (95% CI=1.30-7.24). Workers with insomnia had similar probabilities of reporting CVD regardless of their work schedule, suggesting a relationship to insomnia and not to night work per se. The results also highlighted the importance of including evaluation of all sleep episodes (diurnal plus nocturnal sleep) for night workers.

  19. The Feminist Interpretation of ’Night, Mother

    Institute of Scientific and Technical Information of China (English)

    张璐

    2014-01-01

    The famous contemporary drama wrights in America, Marsha Norman, had won Pulitzer Prize, Tony Prize, Drama Desk Awards and so on. ’Night, Mother was awarded the Pulitzer Prize in 1983.Feminist is the theoretical basis of this paper, analyze ’Night, Mother with the theory of feminist.’Night, Mother is a feminist play.

  20. Night cough counts and diary card scores in asthma.

    OpenAIRE

    Archer, L N; Simpson, H

    1985-01-01

    A tape recording system for recording night cough in asthmatics at home is described. Objective cough counts and half hour periods containing cough did not correlate with diary card scores awarded to eight children on seven nights each. Night cough diary scores may mislead in the assessment of symptom severity.

  1. Do Wild Great Tits Avoid Exposure to Light at Night?

    NARCIS (Netherlands)

    de Jong, Maaike; Ouyang, Jenny Q; van Grunsven, Roy H A; Visser, Marcel E; Spoelstra, Kamiel

    2016-01-01

    Studies of wild populations have provided important insights into the effects of artificial light at night on organisms, populations and ecosystems. However, in most studies the exact amount of light at night individuals are exposed to remains unknown. Individuals can potentially control their night

  2. Do wild great tits avoid exposure to light at night?

    NARCIS (Netherlands)

    De Jong, M.; Ouyang, Jenny; van Grunsven, Roy H. A.; Visser, M.E.; Spoelstra, K.

    2016-01-01

    Studies of wild populations have provided important insights into the effects of artificial light at night on organisms, populations and ecosystems. However, in most studies the exact amount of light at night individuals are exposed to remains unknown. Individuals can potentially control their night

  3. Shift work a reality in life and health nurses

    Directory of Open Access Journals (Sweden)

    Mª Mercedes Gago López

    2013-05-01

    Full Text Available The need to provide care 24 hours of the day, 365 days of the year, means for nurses, compulsory work in a system of rotating shifts, including the realization of nights. This system has repercussions on the life, health and well-being of nurses.In order to identify evidence on the relationship between the work to shift and/or night the health and well-being of nurses and develop recommendations to improve the adaptation to the system of rotating shifts and/or night, have carried out a review of the literature.After detailed analysis of the literature, we can conclude that the quality of the care provided is in direct relation to the health and well-being of the nursing professional. Implement measures to reduce the physical, psychic, social and family wear must be priority, being necessary to educate professionals, families, society and business. Among the recommendations highlight, those directed to the company; set realistic goals, to reduce workloads in the night shift adapting them to the actual number of nurses, flexible schedules and recommendations addressed to the professional related: diet, sleep, exercise, family life and social hygiene. The implementation of these measures will mean: increase satisfaction, reduce absenteeism, increase productivity, reduce the number of errors and decrease spending.

  4. Use of melatonin in circadian rhythm disorders and following phase shifts

    OpenAIRE

    Skene, DJ; Deacon, S; Arendt, J

    1996-01-01

    Following abrupt phase shifts (real or simulated time zone changes, night shift work) there is desynchronisation between the internal circadian rhythms (including melatonin) and the external environment with consequent disturbances in sleep, mood and performance. In humans the pineal hormone melatonin has phase-shifting and resynchronising properties with regard to a number of circadian rhythms. Suitably timed melatonin adrninstration hastened adaptation to phase shift and significantly impro...

  5. Efficacy and hypnotic effects of melatonin in shift-work nurses: double-blind, placebo-controlled crossover trial

    OpenAIRE

    Sadeghniiat-Haghighi, Khosro; Aminian, Omid; Pouryaghoub, Gholamreza; Yazdi, Zohreh

    2008-01-01

    Background: Night work is associated with disturbed sleep and wakefulness, particularly in relation to the night shift. Circadian rhythm sleep disorders are characterized by complaints of insomnia and excessive daytime sleepiness that are primarily due to alterations in the internal circadian timing system or a misalignment between the timing of sleep and the 24-h social and physical environment.Methods: We evaluated the effect of oral intake of 5 mg melatonin taken 30 minutes before night ti...

  6. Wind measurements with incoherent Doppler lidar based on iodine filters at night and day

    Science.gov (United States)

    Liu, Z. S.; Liu, B. Y.; Li, Z. G.; Yan, Z. A.; Wu, S. H.; Sun, Z. B.

    2007-07-01

    An incoherent Doppler wind lidar based on the iodine filter at 532 nm is presented for day and night wind measurements, which was developed by the Key Laboratory of Ocean Remote Sensing of Ministry of Education of China, Ocean University of China. The system operates with a fiber and a narrow-band interference filter to reject daylight. A photon counter is used to improve the detection range. Two iodine filters are used to lock the transmitting laser frequency and to discriminate the Doppler frequency shift, respectively. The method to retrieve the wind profile is described. The detection range of wind profiles (with a 136 m vertical resolution) extends from 100 m to 15 km at night and to 12 km during daytime. The detection range covers the troposphere in the middle and high latitude areas. The comparison experiments between the lidar and radiosonde were performed both during the night and during the day. The standard deviation of the wind direction and speed were 15.5° and 3.1 m/s at night and 15.7° and of 3.2 m/s during the day. This system also has the capability to measure the aerosol backscattering ratio.

  7. [The operational role of the occupational health physician in the assessment and management of health risks related to night risks].

    Science.gov (United States)

    Mucci, Nicola; Giorgi, Gabriele; Gonnelli, Irene Margherita; Garbarino, Sergio; Cupelli, Vincenzo; Arcangelil, Giulio

    2016-01-01

    The operational role of the occupational health physician in the assessment and management of health risks related to night work. Night work, in the last 30-40 years, has been extended to almost all areas of employment. The potential effects on workers' health--related to the disruption of circadian rhythms--are now well defined and studied in the Literature. All issues about the protection of safety and health for night workers are governed by the Italian Legislative Decree no. 66/2003 and subsequent amendments. The management of night work hasn't been included into the main Law on Occupational Safety and Health (Italian Legislative Decree no. 81/2008 and subsequent amendments) and a coordination between the two disciplines is desirable. The occupational health physician, as a global consultant for the protection of all health issues into a company, has to evaluate the potential effects of night work on health, both individually and as a group of workers. In this way, the physician may use either traditional tools (history, physical examination, blood tests) or innovative tools (questionnaires, health promotion programs, interventions on shift schedules). In the management of night work is useful to employ schedules that respect both psychophysical integrity and social welfare of workers and the needs of the production. The occupational health physician plays a significant role in information and training of workers, both individually and as a group of workers, and in the organization of health promotion programs (whit a voluntary participation by the workers). PMID:27311142

  8. Night eating syndrome: implications for severe obesity.

    Science.gov (United States)

    Cleator, J; Abbott, J; Judd, P; Sutton, C; Wilding, J P H

    2012-01-01

    Night eating syndrome (NES) was first identified in 1955 by Stunkard, a psychiatrist specialising in eating disorders (ED). Over the last 20 years considerable progress has been made in defining NES as a significant clinical entity in its own right and it has now been accepted for inclusion in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) due for publication in 2013. NES is considered a dysfunction of circadian rhythm with a disassociation between eating and sleeping. Core criteria include a daily pattern of eating with a significantly increased intake in the evening and/or night time, as manifested by one or both of the following: at least 25% of food intake is consumed after the evening meal or at least two episodes of nocturnal eating per week. An important recent addition to core criteria includes the presence of significant distress and/or impairment in functioning. Stunkard's team recommend further investigation on the pathogenesis of NES, in particular its relationship with traumatic life events, psychiatric comorbidity, the age of onset of NES and course of NES over time. The relationship between NES and other ED also requires further clarification as night-eaters exhibit some features of other ED; previous guidance to separate NES from other ED may have hindered earlier characterisation of NES. Evidence from European and American studies suggests NES features strongly in populations with severe obesity. The complex interplay between depression, impaired sleep and obesity-related comorbidity in severely obese individuals makes understanding NES in this context even more difficult. This review examines evidence to date on the characterisation of NES and concludes by examining the applicability of current NES criteria to individuals with severe obesity. PMID:23446659

  9. Night-time ozone uptake by Mediterranean species

    Directory of Open Access Journals (Sweden)

    S. Mereu

    2009-02-01

    Full Text Available Due to the evident tropospheric ozone impact on plant productivity, an accurate ozone risk assessment for the vegetation has become an issue. There is a growing evidence that ozone stomatal uptake may also take place at night and that the night-time uptake may be more damaging than diurnal uptake. Estimation of night-time uptake in the field is complicated because of instrumental difficulties. Eddy covariance technology is not always reliable because of the low turbulence at night. Leaf level porometry is defective at relative humidity above 70% which often takes place at night. Improved sap flow technology allows to estimate also slow flows that usually take place at night and hence may be, at present, the most trustworthy technology to measure night-time transpiration and hence to derive canopy stomatal conductance and ozone uptake at night. Based on micrometeorological data and the sap flow of three Mediterranean woody species, the night-time ozone uptake of these species was evaluated during a summer season as drought increased. Night-time ozone uptake was 10% of the total when plants were exposed to a weak drought, but increased up to 24% as the drought became more pronounced. The percentage increase is due to a stronger reduction of diurnal stomatal conductance than night-time stomatal conductance.

  10. Moon night sky brightness simulation for the Xinglong station

    International Nuclear Information System (INIS)

    Using a sky brightness monitor at the Xinglong station of National Astronomical Observatories, Chinese Academy of Sciences, we collected data from 22 dark clear nights and 90 moon nights. We first measured the sky brightness variation with time for dark nights and found a clear correlation between sky brightness and human activity. Then with a modified sky brightness model of moon nights and data from these nights, we derived the typical value for several important parameters in the model. With these results, we calculated the sky brightness distribution under a given moon condition for the Xinglong station. Furthermore, we simulated the sky brightness distribution of a moon night for a telescope with a 5° field of view (such as LAMOST). These simulations will be helpful for determining the limiting magnitude and exposure time, as well as planning the survey for LAMOST during moon nights

  11. Night Academy: Heroines, Hunters and Strange Vampires

    OpenAIRE

    Sólveig Geirsdóttir 1988

    2013-01-01

    It was within the Gothic genre that the literary vampire derived. The literary vampire has gained new popularity in the last decade with a new formula focusing on sympathetic vampires. This essay examines four contemporary vampire literary series that have all included a special vampire school. The four series analyzed in this essay are House of Night by P.C. and Kristin Cast, Strange Angels by Lili St. Crow, Vampire Academy by Richelle Mead and Vamps by Nancy A. Collins. The essay determines...

  12. The stargazer's guide to the night sky

    CERN Document Server

    Lisle, Jason, Dr

    2012-01-01

    Explore the night sky, identify stars, constellations, and even planets. Stargaze with a telescope, binoculars, or even your naked eye. Allow Dr. Jason Lisle, a research scientist with a masters and PhD in astrophysics, to guide you in examining the beauty of God's Creation with 150 full color star-charts. Learn the best ways and optimal times to observe planets and stars with easy to use illustrations. Create or expand the hobby of stargazing; an outdoor, educational hobby to enjoy with friends or family.

  13. Being a researcher for one night

    CERN Multimedia

    Roberto Cantoni

    2010-01-01

    On 24 September from 5 p.m. to 1 a.m., European Researchers Night will give some 100 young students from local schools the opportunity to sit side by side with scientists and operators in the LHC control rooms. At the same time, a live webcast will connect CERN with various institutes around Europe participating in the Being a European Scientist Today (BEST) project. You are all invited to take part!   Copyright Frascati Scienza The European Researchers Night is an EU initiated and funded initiative, which aims at highlighting the appeal of being a researcher. Meeting scientists in a ‘fun’ and festive context gives the public, especially the young, the opportunity to get to know the job better and be inspired to pursue a career in research. “CERN scientists already took part in last year’s event, but only through a web connection with Frascati in Italy”, explains Paola Catapano, a member of the Communication group and organiser of the activities t...

  14. 2010 National Observe the Moon Night!

    Science.gov (United States)

    Daou, Doris; Hsu, B. C.; Bleacher, L. V.; Day, B.; Jones, A.; Mitchell, B.; Shaner, A.; Shipp, S.

    2010-05-01

    We are creating a nation-wide, annual public outreach event called "National Observe the Moon Night” (NOMN) that provides opportunities for involving new partners in engaging the public in lunar science and exploration. The 2010 NOMN events will occur at our partner institutions - Ames Research Center (ARC; Moffett Field, CA), Goddard Space Flight Center (GFSC; Greenbelt, MD), Lunar and Planetary Institute (LPI; Houston, TX), and Marshall Space Flight Center (MSFC; Huntsville, AL). The goal of National Observe the Moon Night is to engage the lunar science and education community, our partner networks, amateur astronomers, space enthusiasts, and the general public in annual lunar observation campaigns that share the excitement of lunar science and exploration. National Observe the Moon Night events will use NASA's "Tweet-ups" model and partners' dissemination networks to promote and recruit participation in the events. All information about NOMN will be supplied on a central website, accessible to the public (http://mymoon.lpi.usra.edu/nationalobservethemoonnight). Members of the public are encouraged to host their own NOMN events, and there will be a place for local astronomy clubs, schools, or other groups to post information about NOMN events they are organizing. To assist with their efforts, the website will contain downloadable documents of templates of advertising fliers, Moon maps, and activities that will be distributed at the national events, such as Moon calendar journals. After the events, participants will be able to continue using the website to follow links for more information about sites indicated on their Moon maps.

  15. LA Palma Night-Sky Brightness

    CERN Document Server

    Benn, C R; Benn, Chris R.; Ellison, Sara L.

    1998-01-01

    The brightness of the moonless night sky above La Palma was measured on 427 CCD images taken with the Isaac Newton and Jacobus Kapteyn Telescopes on 63 nights during 1987 - 1996. The median sky brightness at high elevation, high galactic latitude and high ecliptic latitude, at sunspot minimum, is B = 22.7, V = 21.9, R = 21.0, similar to that at other dark sites. The main contributions to sky brightness are airglow and zodiacal light. The sky is brighter at low ecliptic latitude (by 0.4 mag); at solar maximum (by 0.4 mag); and at high airmass (0.25 mag brighter at airmass 1.5). Light pollution (line + continuum) contributes < 0.03 mag in U, approximately 0.02 mag in B, approximately 0.10 mag in V, approximately and 0.10 mag in R at the zenith. This paper is a summary of results which are presented in full elsewhere (Benn & Ellison 1998, La Palma Technical Note 115).

  16. “Wild Nights-Wild Nights!”:Passion for Love

    Institute of Scientific and Technical Information of China (English)

    袁飞

    2015-01-01

    One favorite subject of Emily Dickinson is love,which approximately 300 of her poems concern.This essay intends to analyze one of her love poems“Wild Nights—Wild Nights!”.In this short poem,the poet expresses her passion for love and shows the greatness of love through the employment of symbols and metaphors.

  17. “Wild Nights-Wild Nights!”:Passion for Love

    Institute of Scientific and Technical Information of China (English)

    袁飞

    2015-01-01

    One favorite subject of Emily Dickinson i love,which approximately 300 of her poems concern.This essay intends to analyze one of her love poems "Wild Nights—Wild Nights!".In this short poem,the poet expresses her passion fo love and shows the greatness of love through the employment o symbols and metaphors.

  18. Own the night with flying colors: towards ergonomic full color multiband night vision systems

    NARCIS (Netherlands)

    Toet, A.; Hogervorst, M.A.

    2007-01-01

    Recently we introduced a method for applying natural daytime colors to multi-band night-time images. In this method statistical properties of a reference daytime color image are transferred to the multi-band image. Although the method yields nice results, its practical value is limited since it is c

  19. 0222 Night work and breast cancer risk among women in the public Danish health care sector - a short-term follow up of a large scale population

    DEFF Research Database (Denmark)

    Tilma Vistisen, Helene; Helene Garde, Anne; Marie Hansen, Aase;

    2014-01-01

    prevalence of night shift work and with detailed data regarding occupational title and date and hour for beginning and end of every work duty: The Danish Working Hour Database (DWHD). DWHD encompasses payroll data as of 2007 and is updated on an annual basis. For this analysis we defined night work...... national health registries. RESULTS: The 6-year follow up from 2007 to 2012 included 169.011 women of which 98.297 (58%) had ever worked nights during the follow up. A total of1.281 breast cancer cases occurred within the study population. 846 cases occurred among women never worked nights and 435 cases...

  20. Intra-night Optical Variability of Luminous Radio Quiet QSOs

    CERN Document Server

    Gupta, A C

    2005-01-01

    In the present paper we report the detection of intra-night variability in some of the RQQSOs and one LDQ. To study intra-night variability, we carried out photometric monitoring of seven RQQSOs and one LDQ in Johnson V-passband using 1.2 meter optical/IR telescope at Gurushikhar, Mount Abu, India. Observations were made in nine nights during the first half of the year 2000; seven RQQSOs: 0748+291, 0945+438, 1017+280, 1029+329, 1101+319, 1225+317, 1252+020 and one LDQ: 1103-006 were observed. RQQSOs 0748+291, 1225+317 and LDQ 1103-006 have shown existence of intra-night variations. In the case of 1017+280 (RQQSO) there is indication of intra-night variation in one night where as the observations in another night do not show convincingly the existence of intra-night variability. RQQSOs 0945+438, 1029+329, 1101+319 and 1252+020 have not shown any intra-night variations. We compiled intra-night variability data for radio-loud and radio-quiet AGNs from the literature for statistical analysis. It is found that a g...

  1. Assessment of night vision problems in patients with congenital stationary night blindness.

    Directory of Open Access Journals (Sweden)

    Mieke M C Bijveld

    Full Text Available Congenital Stationary Night Blindness (CSNB is a retinal disorder caused by a signal transmission defect between photoreceptors and bipolar cells. CSNB can be subdivided in CSNB2 (rod signal transmission reduced and CSNB1 (rod signal transmission absent. The present study is the first in which night vision problems are assessed in CSNB patients in a systematic way, with the purpose of improving rehabilitation for these patients. We assessed the night vision problems of 13 CSNB2 patients and 9 CSNB1 patients by means of a questionnaire on low luminance situations. We furthermore investigated their dark adapted visual functions by the Goldmann Weekers dark adaptation curve, a dark adapted static visual field, and a two-dimensional version of the "Light Lab". In the latter test, a digital image of a living room with objects was projected on a screen. While increasing the luminance of the image, we asked the patients to report on detection and recognition of objects. The questionnaire showed that the CSNB2 patients hardly experienced any night vision problems, while all CSNB1 patients experienced some problems although they generally did not describe them as severe. The three scotopic tests showed minimally to moderately decreased dark adapted visual functions in the CSNB2 patients, with differences between patients. In contrast, the dark adapted visual functions of the CSNB1 patients were more severely affected, but showed almost no differences between patients. The results from the "2D Light Lab" showed that all CSNB1 patients were blind at low intensities (equal to starlight, but quickly regained vision at higher intensities (full moonlight. Just above their dark adapted thresholds both CSNB1 and CSNB2 patients had normal visual fields. From the results we conclude that night vision problems in CSNB, in contrast to what the name suggests, are not conspicuous and generally not disabling.

  2. Shifting from Implicit to Explicit Knowledge: Different Roles of Early- and Late-Night Sleep

    Science.gov (United States)

    Yordanova, Juliana; Kolev, Vasil; Verleger, Rolf; Bataghva, Zhamak; Born, Jan; Wagner, Ullrich

    2008-01-01

    Sleep has been shown to promote the generation of explicit knowledge as indicated by the gain of insight into previously unrecognized task regularities. Here, we explored whether this generation of explicit knowledge depends on pre-sleep implicit knowledge, and specified the differential roles of slow-wave sleep (SWS) vs. rapid eye movement (REM)…

  3. International regulations on the organization of shift work.

    Science.gov (United States)

    Kogi, K

    1998-01-01

    Changes since the early 1990s in international regulations on night and shift work were reviewed, including changes in complex shift systems, greater flexibility, increased female participation in night work and attention to health effects. Recent international regulations have focused on (i) a broadened scope of regulatory measures treating both genders equally, (ii) multifaceted protection, and (iii) consultation weighing many aspects of job design. The application of these international regulations depends on national laws and practice, with possible derogations. It calls for local support measures, including (i) guidelines for enterprise-level consultations on shift schedules, (ii) promotion of health and safety measures, and (iii) participatory strategies for locally adjusted shiftwork arrangements and social support.

  4. Effects of Shift Work on Cognitive Performance, Sleep Quality, and Sleepiness among Petrochemical Control Room Operators.

    Science.gov (United States)

    Kazemi, Reza; Haidarimoghadam, Rashid; Motamedzadeh, Majid; Golmohamadi, Rostam; Soltanian, Alireza; Zoghipaydar, Mohamad Reza

    2016-02-03

    Shift work is associated with both sleepiness and reduced performance. The aim of this study was to examine cognitive performance, sleepiness, and sleep quality among petrochemical control room shift workers. Sixty shift workers participated in this study. Cognitive performance was evaluated using a number of objective tests, including continuous performance test, n-back test, and simple reaction time test; sleepiness was measured using the subjective Karolinska Sleepiness Scale (KSS); and sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI) questionnaire. ANCOVA, t-test, and repeated-measures ANOVA were applied for statistical analyses, and the significance level was set at p sleep quality on both day and night shifts, and there were significant differences between the day and night shifts in terms of subjective sleep quality and quantity (p sleep, induced cognitive performance decline at the end of both day and night shifts, and increased sleepiness in night shift. It, thus, seems necessary to take ergonomic measures such as planning for more appropriate shift work and reducing working hours.

  5. Peculiar seasonal effects in the neutrino day-night asymmetry

    CERN Document Server

    Kharlanov, Oleg G

    2015-01-01

    We analyze peculiar effects in the day-night asymmetry of solar neutrinos taking place due to their continuous observation during the night and/or the year. Namely, we show that the day-night effect contains both a trivial, cumulative contribution from the whole observation term and a number of localized terms originating from around the midnights (during the nights) and the two solstices (during the year). We estimate the latter contributions using asymptotical methods and discuss the prospects of their isolation, i.e., magnification, by contraction of the neutrino observation term to small neighborhoods of the localization points. In order to complement our asymptotical predictions derived analytically, we also perform a full numerical analysis of a temporally-weighted observation of the day-night effect, including the energy spectrum of the day-night asymmetry and an estimation of the recoil energy distributions for the elastic-scattering detection channel. According to both analytical and numerical result...

  6. Researchers' Night: science at the shops

    CERN Multimedia

    Corinne Pralavorio

    2015-01-01

    On 25 September, as part of European Researchers’ Night, CERN and POPScience joined forces to welcome the public at the Balexert shopping centre in Geneva. The Bulletin presents its gallery of photographs from the exciting and educational event.   Science through comic strips, games, cinema and television: POPScience approaches scientific questions through popular culture, with great success! Around 500 children attended the sessions for schools at Balexert's multiplex cinema, and 600 spectators flocked to the public screenings.  Using the big screen, scientists, directors and authors were on hand to disentangle truth from untruths and science from science fiction. The guests, some of whom appeared in person and others via video link, included Jorge Cham, author of PhD Comics and the spin-off film; David Saltzberg, physicist at CMS and scientific consultant for the television series The Big Bang Theory; Kip Thorne, scientific consultant for the film Interstellar; Lawrence ...

  7. Coloring night vision imagery for depth perception

    Institute of Scientific and Technical Information of China (English)

    Xiaojing Gu; Shaoyuan Sun; Jian'an Fang

    2009-01-01

    Depth perception for night vision(NV)imagery could largely improve scene comprehension.We present a novel scheme to give fused multi-band NV imagery smoothly natural color appearance as well as depth sense from color.Our approach is based on simulating color cues by varying saturation values of each object in the color NV image,in correspondence with the ratio between the infrared and low-light-level sensor outputs which in practice is the depth feature for same materials.We render the NV image segment-by-segment by taking advantage of image segmentation,dominant color transfer,saturation variation,and image fusion.Experiments have shown that the proposed scheme can achieve satisfying results.

  8. Rapid changes in night eating: considering mechanisms.

    Science.gov (United States)

    Stunkard, A; Lu, X-Y

    2010-01-01

    This paper considers possible mechanisms for the Night Eating Syndrome (NES). NES is a disorder characterized by a delay in the circadian rhythm of meals and of several neuroendocrine factors. The disorder occurs in genetically vulnerable people when exposed to stress. No convincing mechanism of the NES has been reported until now. To search for the mechanisms of NES, the long term treatment of two highly perceptive patients with rapid onset of the disorder are described. Disruption of three neuroendocrine systems compatible with these histories are discussed: the glucocorticoid system, the melanocortin [corrected] system, and the serotonergic system. Current evidence favors the serotonergic system and this view is strongly supported by the great effectiveness of selective serotonin reuptake inhibitors (SSRIs) in the treatment of NES. PMID:20571317

  9. Acute sciatic neuropathy: "Saturday night palsy"

    Directory of Open Access Journals (Sweden)

    Manigoda Miodrag

    2005-01-01

    Full Text Available This is a case report of 25-year old, unemployed male, admitted to hospital due to acute onset of the left foot drop, subsequent walking difficulty and numbness of the left calf and foot. Symptoms began after prolonged sleep with previous heroin abuse by sniffing. During neurological examination, mild weakness of knee flexors, moderate weakness of plantar flexors and paralysis of foot dorsiflexors, together with hypesthesia of the left calf, foot and fingers, predominantly in the innervation area of common peroneal nerve on the same side, were observed. The electrophysiologic examination revealed predominant involvement of peroneal division within the sciatic nerve, together with recorded conduction block indicating the compression as possible mechanism of nerve injury. The patient was administered corticosteroid therapy during two months, what resulted in almost complete recovery. The peculiarity of this case report is in the presence of the sciatic nerve "Saturday night palsy" with possible effect of former heroin abuse.

  10. Night Sky Brightness and Light Pollution in Comunidad de Madrid

    OpenAIRE

    Zamorano Calvo, Jaime; Sánchez de Miguel, Alejandro; Gómez Castaño, José; Ocaña González, Francisco; Gallego Maestro, Jesús; Pila Díez, Berenice; Nievas Rosillo, Miguel; Tapia Ayuga, Carlos; Fernández Domínguez, Alberto; Pascual Ramírez, Sergio

    2013-01-01

    Preliminary results of a study of the night sky background brightness around the city of Madrid using Sky Quality Meter (SQM) photometers are presented. Data-retrieval methodology includes an automatic procedure to measure from a moving vehicle which allows to speed up the data gathering. The night sky brightness, an astronomical quality parameter that accounts for luminous flux from the sky, is closely related with the light pollution. The map with the spatial distribution of the night s...

  11. Night lights and regional income inequality in Africa

    DEFF Research Database (Denmark)

    Mveyange, Anthony Francis

    Estimating regional income inequality in Africa has been challenging due to the lack of reliable and consistent sub-national income data. I employ night lights data to circumvent this limitation. I find significant and positive associations between regional inequality visible through night lights...... and income in Africa. Thus, in the absence of income data, we can construct regional inequality proxies using night lights data. Further investigation on the night lights-based regional inequality trends reveals two main findings: first, increasing regional inequality trends between 1992 and 2003; and...... second, declining regional inequality trends between 2004 and 2012....

  12. Compressive Shift Retrieval

    Science.gov (United States)

    Ohlsson, Henrik; Eldar, Yonina C.; Yang, Allen Y.; Sastry, S. Shankar

    2014-08-01

    The classical shift retrieval problem considers two signals in vector form that are related by a shift. The problem is of great importance in many applications and is typically solved by maximizing the cross-correlation between the two signals. Inspired by compressive sensing, in this paper, we seek to estimate the shift directly from compressed signals. We show that under certain conditions, the shift can be recovered using fewer samples and less computation compared to the classical setup. Of particular interest is shift estimation from Fourier coefficients. We show that under rather mild conditions only one Fourier coefficient suffices to recover the true shift.

  13. Further testing the impact of shift schedule on task scale variables for medical laboratory professionals.

    Science.gov (United States)

    Blau, Gary; Fertig, Jason; Lopez, Andrea; Aaronson, William; Holladay, Blair

    2007-01-01

    Using a broader sample of medical laboratory professionals, this study extended prior work by Blau and Lunz testing the impact of shift schedule on task scales. Overall the results supported the study hypothesis-i.e., medical laboratory professionals on a fixed day shift have lower job content routinization (higher task enrichment) than fixed evening and night and rotating shifts. Future research issues and study limitations are briefly discussed. PMID:18293804

  14. Deliverance from the "Dark Night of the Soul"

    Science.gov (United States)

    Kinnier, Richard T.; Dixon, Andrea L.; Scheidegger, Corey; Lindberg, Brent

    2009-01-01

    For many individuals, spiritual inspiration, clarity, or epiphany is often preceded by a "dark night of the soul". St. John of the Cross, a Spanish mystic of the 16th century, first described the concept. Today, the phrase "dark night of the soul" is usually associated with the crisis part of the journey to enlightenment. This article defines and…

  15. INVIS : Integrated night vision surveillance and observation system

    NARCIS (Netherlands)

    Toet, A.; Hogervorst, M.A.; Dijk, J.; Son, R. van

    2010-01-01

    We present the design and first field trial results of the all-day all-weather INVIS Integrated Night Vision surveillance and observation System. The INVIS augments a dynamic three-band false-color nightvision image with synthetic 3D imagery in a real-time display. The night vision sensor suite cons

  16. Do Not Go Gentle into That Good Night

    Institute of Scientific and Technical Information of China (English)

    Dylan; Thomas

    2008-01-01

    Do not go gentle into that good night,Old age should burn and rave at close of day;Rage, rage against the dying of the light.Though wise men at their end know dark is right,Because their words had forked no lightning theyDo not go gentle into that good night.

  17. Experimental Assessment of Mechanical Night Ventilation on Inner Wall Surfaces

    DEFF Research Database (Denmark)

    Wenhui, Ji; Heiselberg, Per Kvols; Wang, Houhua;

    2016-01-01

    The cooling potential of night ventilation largely depends on the heat exchange at the internal room surfaces. During night time, increased heat transfer on a vertical wall is expected due to cool supply air that flows along the internal wall surface from the top of the wall. This paper presents ...

  18. Psyche and Society in Sendak's "In the Night Kitchen"

    Science.gov (United States)

    Adams, Rebecca V. L.; Rabkin, Eric S.

    2007-01-01

    While "Where the Wild Things Are" may be Maurice Sendak's most popular book, "In the Night Kitchen" is arguably the greater work. Though his journey in "Wild Things" shares many of the elements of Mickey's adventure in "Night Kitchen"--swinging between the protagonist's initiatory verbal assertions and silent, completely pictorial spreads that…

  19. Artificial light at night inhibits mating in a Geometrid moth

    NARCIS (Netherlands)

    Geffen, van K.G.; Eck, van E.; Boer, de R.; Grunsven, van R.H.A.; Salis, F.; Berendse, F.; Veenendaal, E.M.

    2015-01-01

    1.Levels of artificial night lighting are increasing rapidly worldwide, subjecting nocturnal organisms to a major change in their environment. Many moth species are strongly attracted to sources of artificial night lighting, with potentially severe, yet poorly studied, consequences for development,

  20. Popular actions: For the right at night

    International Nuclear Information System (INIS)

    In 1997 a teacher of the school The Deer of Tauramena established a popular action against the companies that exploit the petroleum of the field Cusiana. Maria Ninfa Diaz and her husband Eleodoro Torres, a couple of peasants tormented behind from years by the presence in their sidewalk of gigantic firebrands that they burn natural gas as forced part of the oil activity. Burdened by the permanent noise of something like that as an enormous torch. Gone mad by the splendor in the nights of minuscule industrial suns. Tired by the increase of the temperature in their corner of the prairie. The life became less pleasant. Before the only sound was fluttering of the bats and the step of the livestock, actors of a time that became past in the immense green sea, when the plain was flat. Perhaps from the optics of the demanded companies this it is an ordinary litigation; it should be won to all coast, so much but when the companies needs to sit down a precedent that is already common place in the plain; doesn't enter with the oil companies and so that they didn't enter with the oil companies the defendants hired an lawyers office that gets paid per hours and they wait, eagerly, to rob Maria Ninfa Diaz of the property where she lives. The author continues relating the impasse between the peasant and the oil multinational company in Colombia

  1. PARTICLE-larly Enriching Night at CERN!

    CERN Multimedia

    Yves-Marie Ducimetière

    2010-01-01

    After the 2010 European Researchers' Night, a contest was organised for its participants, asking them to write about their experience. We are now pleased to announce the winner: Yves-Marie Ducimetière, a 14-year-old student at the Lycée International de Ferney-Voltaire.    Yves-Marie Ducimetière. The visit began for me around 20.30, as we all joined our respective groups to board a CERN shuttle to our final destination, which was LHCb in my case. I was heading into the unknown! On leaving, I knew nothing about this place, and the discovery made it all the more interesting. Upon arriving, a woman explained that their research looked at antimatter, or rather, the reason why it disappeared from our Universe – she then accompanied us inside. Amazingly, I found the place to be both friendly and serious. One physicist spoke passionately about the purpose of LHCb, in short: colliding particles in order to understand the Big Bang, the origin of t...

  2. Visualization on the Day Night Year Globe

    Science.gov (United States)

    Božić, Mirjana; Vušković, Leposava; Popović, Svetozar; Popović, Jelena; Marković-Topalović, Tatjana

    2016-11-01

    The story about a properly oriented outdoor globe in the hands and minds of Eratosthenes, Jefferson, Milanković and science educators is presented. Having the same orientation in space as the Earth, the Day Night Year Globe (DING) shows in real time the pattern of illumination of the Earth’s surface and its diurnal and seasonal variations. It is an ideal object for the visualization of knowledge and increase in knowledge about: the form of the Earth, Earth’s rotation, Earth’s revolution around the Sun, the length of seasons, solstices, equinoxes, the longitude problem, the distribution of the Sun’s radiation over the Earth, the impact of this radiation on Earth’s climate, and how to use it efficiently. By attaching a movable vane to the poles, or adding pins around the equator to read time, DING becomes a spherical/globe-shaped sundial. So, the DING is simultaneously useful for teaching physics, geophysics, astronomy, use of solar energy and promoting an inquiry-based learning environment for students and the public.

  3. Forecasting Urban Expansion Based on Night Lights

    Science.gov (United States)

    Stathakis, D.

    2016-06-01

    Forecasting urban expansion models are a very powerful tool in the hands of urban planners in order to anticipate and mitigate future urbanization pressures. In this paper, a linear regression forecasting urban expansion model is implemented based on the annual composite night lights time series available from National Oceanic and Atmospheric Administration (NOAA). The product known as 'stable lights' is used in particular, after it has been corrected with a standard intercalibration process to reduce artificial year-to-year fluctuations as much as possible. Forecasting is done for ten years after the end of the time series. Because the method is spatially explicit the predicted expansion trends are relatively accurately mapped. Two metrics are used to validate the process. The first one is the year-to-year Sum of Lights (SoL) variation. The second is the year-to-year image correlation coefficient. Overall it is evident that the method is able to provide an insight on future urbanization pressures in order to be taken into account in planning. The trends are quantified in a clear spatial manner.

  4. Krill (Meganyctiphanes norvegica) swim faster at night

    KAUST Repository

    Klevjer, Thor A.

    2011-05-01

    Krill are key members in marine food webs, and measurement of swimming speed is vital to assess their bioenergetic budgets, feeding, and encounters with predators. We document a consistent and marked diel signal in swimming speed of krill in their natural habitat that is not related to diel vertical migration. The results were obtained using a bottom-mounted, upward-looking echo sounder at 150-m depth in the Oslofjord, Norway, spanning 5 months from late autumn to spring at a temporal resolution of ~1–2 records s−1. Swimming speed was assessed using acoustic target tracking of individual krill. At the start of the registration period, both daytime and nocturnal average swimming speeds of Meganyctiphanes norvegica were ~ 3.5 cm s−1 (~ 1 body lengths ([bl] s−1) in waters with oxygen concentrations of ~ 15–20% O2 saturation. Following intrusion of more oxygenated water, nocturnal average swimming speeds increased to ~ 10 cm s−1 (~ 3 bl s−1), i.e., more than double that of daytime swimming speeds in the same period. We hypothesize that krill activity during the first period was limited by oxygen, and the enhanced swimming at night subsequent to the water renewal is due to increased feeding activity under lessened danger of predation in darkness.

  5. The Ecological Implications of Light at Night (LAN)

    Science.gov (United States)

    Henshaw, Colin

    2015-08-01

    Summary: Light at night (LAN) is now an established environmental problem, not only for astronomers but for the population at large. It has serious ecological effects that are wide ranging, and its environmental effects may be more serious than ever imagined. The ecological and environmental consequences are examined and emphasis is stressed on resolving the problem before it is too late.Introduction: A casual glance at NASA images of the Earth at night1 reveals the lights of thousands of cities. The larger cities will contain millions of street lights, along with commercial, sports and decorative lighting. Most of these lights are on all night, every night, three hundred and sixty-five nights a year, (fig 1), so they must be having a measurable ecological and environmental effect. The most obvious effect of all this excessive lighting is the light pollution suffered by astronomers.

  6. Outdoor light at night (LAN) is correlated with eveningness in adolescents.

    Science.gov (United States)

    Vollmer, Christian; Michel, Ulrich; Randler, Christoph

    2012-05-01

    External zeitgebers synchronize the human circadian rhythm of sleep and wakefulness. Humans adapt their chronotype to the day-night cycle, the strongest external zeitgeber. The human circadian rhythm shifts to evening-type orientation when daylight is prolonged into the evening and night hours by artificial light sources. Data from a survey of 1507 German adolescents covering questions about chronotype and electronic screen media use combined with nocturnal satellite image data suggest a relationship between chronotype and artificial nocturnal light. Adolescents living in brightly illuminated urban districts had a stronger evening-type orientation than adolescents living in darker and more rural municipalities. This result persisted when controlling for time use of electronic screen media, intake of stimulants, type of school, age, puberty status, time of sunrise, sex, and population density. Time spent on electronic screen media use-a source of indoor light at night-is also correlated with eveningness, as well as intake of stimulants, age, and puberty status, and, to a lesser degree, type of school and time of sunrise. Adequate urban development design and parents limiting adolescents' electronic screen media use in the evening could help to adjust adolescents' zeitgeber to early school schedules when they provide appropriate lighting conditions for daytime and for nighttime. PMID:22214237

  7. Shift work and circadian dysregulation of reproduction

    Directory of Open Access Journals (Sweden)

    Karen L. Gamble

    2013-08-01

    Full Text Available Health impairments, including reproductive issues, are associated with working nights or rotating shifts. For example, shift work has been associated with an increased risk of irregular menstrual cycles, endometriosis, infertility, miscarriage, low birth weight or pre-term delivery, and reduced incidence of breastfeeding. Based on what is known about circadian regulation of endocrine rhythms in rodents (and much less in humans, the circadian clock is an integral regulatory part of the reproductive system. When this 24-h program is disordered by environmental perturbation (such as shift work or genetic alterations, the endocrine system can be impaired. The purpose of this review is to explore the hypothesis that misalignment of reproductive hormones with the environmental light-dark cycle and/or sleep wake rhythms can disrupt menstrual cycles, pregnancy, and parturition. We highlight the role of the circadian clock in regulating human reproductive physiology and shift work-induced pathology within each step of the reproductive axis while exploring potential mechanisms from the animal model literature. In addition to documenting the reproductive hazards of shift work, we also point out important gaps in our knowledge as critical areas for future investigation. For example, future studies should examine whether forced desynchronization disrupts gonadotropin secretion rhythms and whether there are sleep/wake schedules that are better or worse for the adaptation of the reproductive system to shift work. These studies are necessary in order to define not only whether or not shift-work induced circadian misalignment impairs reproductive capacity, but also to identify strategies for the future that can minimize this desynchronization.

  8. Night work, fatigued driving and traffic law: the case of police officers.

    Science.gov (United States)

    Radun, Igor; Ohisalo, Jussi; Radun, Jenni; Kecklund, Göran

    2011-01-01

    Given the well-known difficulties in defining and detecting fatigue, it is a real challenge to incorporate it into either traffic or criminal law. Finnish traffic law forbids fatigued driving "only" on a general level concerning the driver's fitness to drive. We present several comments from Finnish traffic and local police officers regarding their own experiences of driving while fatigued. The comments were extracted from a larger survey of traffic (N=129) and local (N=100) police officers, and prosecutors (N=96). Although the main topic of the survey was the application of the law that forbids fatigued driving, some police officers raised the issue of their own behavior in this respect. We argue that many shift workers, including police officers, break the law, especially when driving home after a night shift.

  9. Xerostomia: A day and night difference

    International Nuclear Information System (INIS)

    Purpose: To compare patient-reported xerostomia during daytime and during nighttime with objectively measured parotid and submandibular gland function in a cohort of head-and-neck cancer (HNC) patients treated with RT. Materials and methods: A cohort of 138 HNC patients underwent objective measurements of parotid (PF) and submandibular (SMF) gland function and completed a xerostomia questionnaire (XQ) before RT, at 6 weeks, 6 months and 1 year after RT. No attempt was made to spare the submandibular gland(s). The XQ contained specific questions concerning the sensation of dry mouth during day- (XD) and nighttime (XN), scored on a 5-point Likert scale. Patients with no or mild (grade 1–3) xerostomia and patients with more severe (grade 4–5) complaints were grouped together. Results: Before RT, no association existed between dry mouth complaints and PF or SMF. At 6 weeks, 6 months and 1 year after RT; 37%, 51% and 36% had grade 4–5 XD and 65%, 64% and 56% had grade 4–5 XN, respectively. Patients with grade 4–5 XD and XN had significantly worse SMF at all time points after RT compared to patients with grade 1–3 XD and XN, while PF was significantly worse only at 6 weeks after RT. In multivariate analyses, SMF was consistently the most important factor related to XN after treatment. PF significantly influenced XD at 6 weeks and 1 year after RT. Conclusions: Differentiating between complaints during day- and nighttime in xerostomia research is necessary. Dry mouth at night is a frequent problem after (parotid-sparing) RT for HNC and is explained by submandibular gland dysfunction. Sparing of the contralateral submandibular gland, in addition to parotid gland sparing, may result in improved patient-reported xerostomia.

  10. The night sky brightness at Potsdam-Babelsberg

    CERN Document Server

    Puschnig, Johannes; Posch, Thomas; Schwarz, Robert

    2013-01-01

    We analyze the results of a 2 years (2011--2012) time series of night sky photometry performed at the Leibniz Institute for Astrophysics in Potsdam (AIP). This observatory is located on top of a hill ("Babelsberg"), 22\\,km to the southwest of the center of Berlin. The measurements have been performed with a Unihedron Sky Quality Meter. We find night sky brightness values ranging from 16.5 to 20.3 mag$_{\\rm SQM}$ arcsec$^{-2}$; the latter (best) value corresponds to 4.7 times the natural zenithal night sky brightness. We discuss the influence of clouds, of the Moon and other factors on the night sky brightness. With respect to the influence of the Moon, it turns out that Potsdam-Babelsberg, despite its proximity to Berlin, still shows a circalunar periodicity of the night sky brightness, although it is much weaker than naturally. The light-pollution-enhancing effect of clouds dominates the night sky brightness by far. Overcast nights with light pollution (up to 16.5 mag$_{\\rm SQM}$ arcsec$^{-2}$) are brighter ...

  11. Working for Food Shifts Nocturnal Mouse Activity into the Day

    OpenAIRE

    Hut, Roelof A.; Violetta Pilorz; Ate S Boerema; Arjen M Strijkstra; Serge Daan

    2011-01-01

    Nocturnal rodents show diurnal food anticipatory activity when food access is restricted to a few hours in daytime. Timed food access also results in reduced food intake, but the role of food intake in circadian organization per se has not been described. By simulating natural food shortage in mice that work for food we show that reduced food intake alone shifts the activity phase from the night into the day and eventually causes nocturnal torpor (natural hypothermia). Release into continuous...

  12. Shedding Light on Light Pollution: Reports from GLOBE at Night

    Science.gov (United States)

    Walker, Constance E.; Pompea, S. M.; Isbell, D.

    2009-05-01

    The citizen-science program on light pollution, GLOBE at Night, has had rich responses during this year's campaign in March 2009. Reporting on some of the highlights, we will hear success stories and lessons learned from educators, students, science centers and astronomy clubs from around the world. Communities will be featured from several cities, such Norman, Oklahoma, Mishawaka, Indiana, Willimantic, Connecticut, and Waynesville, Ohio, which created mini-campaigns that combined local students with public advocates and representatives from local city and county governments. Connecticut kids collaborated with students in Wales, Canada and Romania on GLOBE at Night, and an extensive campaign was planned with the schools near the observatories of north-central Chile. Groups that have received special training in GLOBE at Night and related activities include the "Astronomy from the Ground Up” network of science and nature centers (fostered by the ASP and the NSF), 146 amateur astronomers who are part of the ASP-NASA Night-Sky Network, and the Association of Science-Technology Centers. Special training was given over forums, telecon-powerpoint presentations and blogs, to fit the needs of the communities. Among the more interesting media efforts for the general public, GLOBE at Night was the topic of the March 6 episode of the IYA2009 "Days of Astronomy" podcast. International organizing efforts for GLOBE at Night have been strong in countries like Argentina, Australia, Austria, Brazil, Canada, Chile, Costa Rica, the Czech Republic, Germany, Hungary, Ireland, Poland, Portugal, Romania, Spain and the United Kingdom, to name a few. We will also discuss how cities, such as Tucson, Arizona, combined efforts on GLOBE at Night with involvement in the World Wildlife Fund's Earth Hour event (www.earthhour.org). Earth Hour encouraged everyone to turn out their lights from 8:30-9:30 p.m. local time on Saturday, March 28, the final night of GLOBE at Night 2009.

  13. Automatically Identification and Classification of Moving Vehicles at Night

    Directory of Open Access Journals (Sweden)

    Atena Khodarahmi

    2012-07-01

    Full Text Available Todays moving object detection plays an important role in computer vision filed. Although a lot of moving objects detection methods has been proposed but monitoring at nights is still a challenging topic. In this paper, a robust algorithm is proposed for automatic detection moving vehicles at night or in environments with low level of light which has quality problems. In this algorithm, first preprocessing steps were conducted. Then all of vehicles in frame identify and classify according their type. Finally, the moving vehicles detected. The results demonstrate that the proposed algorithm significantly outperforms existing algorithm for the detecting and classification of moving vehicles at night.

  14. Analysis of Seven Years of Globe at Night Data

    Science.gov (United States)

    Birriel, J. J.; Walker, C. E.; Thornsberry, C. R.

    2014-05-01

    The Globe at Night (GaN) project website contains seven years of night-sky brightness data contributed by citizen scientists. We perform a statistical analysis of naked-eye limiting magnitudes (NELMs) and find that over the period from 2006 to 2012 global averages of NELMs have remained essentially constant. Observations in which participants reported both NELM and Unihedron Sky Quality Meter (SQM) measurements are compared to a theoretical expression relating night sky surface brightness and NELM: the overall agreement between observed and predicted NELM values based on the reported SQM measurements supports the reliability of GaN data.

  15. NICOS System of Nightly Builds for Distributed Development

    CERN Document Server

    Undrus, A

    2003-01-01

    NICOS, NIghtly COntrol System, is a flexible tool for coordination of software development in large-scale projects. It manages the multi-platform nightly builds based on the recent versions of software packages, tries to compensate for technical failures, tests the newly built software, identifies possible problems, and makes results immediately available to developers spread over different institutions and countries. The NICOS nightly build services ensure that new software submissions are consistent and provide expected results. The NICOS tool was developed to coordinate the efforts of more than 100 developers from 34 countries for the ATLAS project at CERN and can be easily adapted for other large software projects.

  16. Shift work in a security environment

    International Nuclear Information System (INIS)

    Human beings are diurnal species, normally active by day and asleep by night. Yet over thirty million Americans struggle with work schedules that include an off-normal work effort. The railroads, law enforcement, health services, Department of Defense, factory workers, chemical plants and public services, communications and utility workers must provide some form of around-the-clock effort. Shift work has been around since the advent of recorded history. There has always been a need for some type of off-normal service and assistance. The impact of shift work is replete with tales and factual evidence of an increased personnel error rate; disorders, both personal and family, and of course, increased accident events. In recent memory, the Three Mile Island Nuclear Plant incident, Union Carbide's explosion in Bhopal, and the Chernobyl Nuclear Plant catastrophe all occurred during off-normal working hours. Yet management overall has done little to correct the production-driven twelve hour, seven day week shift mentality of the nineteenth century. Most schedules in use today are nothing more than cosmetic variations of the old production schedules. This could be driven by a management consideration of the worker's response to change coupled with a reluctant buy-in of responsibility for the effects of change. Florida Power Corporation has developed for its nuclear security force, a unique work schedule which attempts to employ the sound principles of circadian rhythms coupled with a comprehensive training program to counter the problems associated with shift work. The results over the last four years have seen a marked reduction in the generic problems of personnel errors, absenteeism, unscheduled overtime and turnover rates. Utilization and understanding of this scheduling process for rotational shift work needs to be assessed to determine if the benefits are site specific or provide an expected response to the problems of shift work

  17. Implementing OpenShift

    CERN Document Server

    Miller, Adam

    2013-01-01

    A standard tutorial-based approach to using OpenShift and deploying custom or pre-built web applications to the OpenShift Online cloud.This book is for software developers and DevOps alike who are interested in learning how to use the OpenShift Platform-as-a-Service for developing and deploying applications, how the environment works on the back end, and how to deploy their very own open source Platform-as-a-Service based on the upstream OpenShift Origin project.

  18. Shift work: health, performance and safety problems, traditional countermeasures, and innovative management strategies to reduce circadian misalignment

    Directory of Open Access Journals (Sweden)

    Smith MR

    2012-09-01

    Full Text Available Mark R Smith, Charmane I EastmanBiological Rhythms Research Laboratory, Rush University Medical Center, Chicago, IL, USAAbstract: There are three mechanisms that may contribute to the health, performance, and safety problems associated with night-shift work: (1 circadian misalignment between the internal circadian clock and activities such as work, sleep, and eating, (2 chronic, partial sleep deprivation, and (3 melatonin suppression by light at night. The typical countermeasures, such as caffeine, naps, and melatonin (for its sleep-promoting effect, along with education about sleep and circadian rhythms, are the components of most fatigue risk-management plans. We contend that these, while better than nothing, are not enough because they do not address the underlying cause of the problems, which is circadian misalignment. We explain how to reset (phase-shift the circadian clock to partially align with the night-work, day-sleep schedule, and thus reduce circadian misalignment while preserving sleep and functioning on days off. This involves controlling light and dark using outdoor light exposure, sunglasses, sleep in the dark, and a little bright light during night work. We present a diagram of a sleep-and-light schedule to reduce circadian misalignment in permanent night work, or a rotation between evenings and nights, and give practical advice on how to implement this type of plan.Keywords: circadian rhythms, night work, bright light, phase-shifting, sleep, melatonin

  19. Night-Lighting as a Waterfowl Capture Technique

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — In recent years considerable experimentation with the night-lighting technique for capturing waterfowl has been conducted in the United State s and Canada....

  20. Venus Night Airglow Distibutions and Variability: NCAR VTGCM Simulations

    Science.gov (United States)

    Brecht, Amanda; Bougher, S.; Gerard, J.; Rafkin, S.; Foster, B.

    2008-09-01

    The National Center for Atmospheric Research (NCAR) thermospheric general circulation model for Venus (VTGCM) is producing results that are comparative to Pioneer Venus and Venus Express data. The model is a three dimensional model that can calculate temperatures, zonal winds, meridional winds, vertical winds, and concentration of specific species. The VTGCM can also compute the O2-IR and NO-UV night airglow intensity distributions. With a lower boundary set at 70 Km and a range of sensitivity tests, the VTGCM is able to show consistent set of results with the nightside temperature and the night airglows. These results can show possible controlling parameters of the O2-IR, NO-UV night airglow layers, and the nightside hot spot. Being able to understand the night airglow distribution and variability provides valuable insight into the changing circulation of Venus’ upper atmosphere and leads to an overall planetary perception of the atmospheric dynamics.

  1. Passive Cooling of buildings by night-time ventilation

    DEFF Research Database (Denmark)

    Artmann, Nikolai; Manz, Heinrich; Heiselberg, Per

    Due to an overall trend towards an increasing cooling energy demand in buildings in many European countries over the last few decades, passive cooling by night-time ventilation is seen as a promising concept. However, because of uncertainties in thermal comfort predictions, architects and engineers...... are still hesitant to apply passive cooling techniques. As night-time ventilation is highly dependent on climatic conditions, a method for quantifying the climatic cooling potential was developed and the impact of climate warming was investigated. Although a clear decrease was found, significant potential...... will remain, especially if night-time ventilation is applied in combination with other cooling methods. Building energy simulations showed that the performance of night-time ventilation is also affected by the heat transfer at internal room surfaces, as the cooling effect is very limited for heat transfer...

  2. Cooling of the Building Structure by Night-time Ventilation

    DEFF Research Database (Denmark)

    Artmann, Nikolai

    , architects and engineers are still hesitant to apply passive cooling techniques. The basic concept of night-time ventilation involves cooling the building structure overnight in order to provide a heat sink during the occupancy period. As this requires a sufficiently high temperature difference between...... the ambient air and the building structure, the efficiency of night cooling is highly sensitive to climatic conditions and hence also to climate warming. In the first part of this PhD study, the potential for passive cooling of buildings by night-time ventilation was evaluated by analysing climatic data...... to be sufficient to assure thermal comfort in many Southern and Central European buildings. In Northern Europe, a significant passive cooling potential is likely to remain, at least for the next few decades. Because heat gains and night ventilation periods typically do not coincide in time, heat storage...

  3. Do Wild Great Tits Avoid Exposure to Light at Night?

    Science.gov (United States)

    de Jong, Maaike; Ouyang, Jenny Q; van Grunsven, Roy H A; Visser, Marcel E; Spoelstra, Kamiel

    2016-01-01

    Studies of wild populations have provided important insights into the effects of artificial light at night on organisms, populations and ecosystems. However, in most studies the exact amount of light at night individuals are exposed to remains unknown. Individuals can potentially control their nighttime light exposure by seeking dark spots within illuminated areas. This uncertainty makes it difficult to attribute effects to a direct effect of light at night, or to indirect effects, e.g., via an effect of light at night on food availability. In this study, we aim to quantify the nocturnal light exposure of wild birds in a previously dark forest-edge habitat, experimentally illuminated with three different colors of street lighting, in comparison to a dark control. During two consecutive breeding seasons, we deployed male great tits (Parus major) with a light logger measuring light intensity every five minutes over a 24h period. We found that three males from pairs breeding in brightly illuminated nest boxes close to green and red lamp posts, were not exposed to more artificial light at night than males from pairs breeding further away. This suggests, based on our limited sample size, that these males could have been avoiding light at night by choosing a roosting place with a reduced light intensity. Therefore, effects of light at night previously reported for this species in our experimental set-up might be indirect. In contrast to urban areas where light is omnipresent, bird species in non-urban areas may evade exposure to nocturnal artificial light, thereby avoiding direct consequences of light at night. PMID:27355354

  4. Do Wild Great Tits Avoid Exposure to Light at Night?

    Directory of Open Access Journals (Sweden)

    Maaike de Jong

    Full Text Available Studies of wild populations have provided important insights into the effects of artificial light at night on organisms, populations and ecosystems. However, in most studies the exact amount of light at night individuals are exposed to remains unknown. Individuals can potentially control their nighttime light exposure by seeking dark spots within illuminated areas. This uncertainty makes it difficult to attribute effects to a direct effect of light at night, or to indirect effects, e.g., via an effect of light at night on food availability. In this study, we aim to quantify the nocturnal light exposure of wild birds in a previously dark forest-edge habitat, experimentally illuminated with three different colors of street lighting, in comparison to a dark control. During two consecutive breeding seasons, we deployed male great tits (Parus major with a light logger measuring light intensity every five minutes over a 24h period. We found that three males from pairs breeding in brightly illuminated nest boxes close to green and red lamp posts, were not exposed to more artificial light at night than males from pairs breeding further away. This suggests, based on our limited sample size, that these males could have been avoiding light at night by choosing a roosting place with a reduced light intensity. Therefore, effects of light at night previously reported for this species in our experimental set-up might be indirect. In contrast to urban areas where light is omnipresent, bird species in non-urban areas may evade exposure to nocturnal artificial light, thereby avoiding direct consequences of light at night.

  5. Researchers Night in Portugal, featuring CMS Virtual Visit

    CERN Document Server

    Lisbon, Portugal

    2016-01-01

    Highlights from European Researchers Night in the Planetarium Calouste Gulbenkian - Ciência Viva Centre. Organised by researchers from LIP (Laboratório de Instrumentação e Física Experimental de Partículas) and including CMS Virtual Visit. During that night, André David Tinoco Mendez and José Rasteiro da Silva, based at Cessy (France) - home of the CMS detector, discussed scientific challenges with audience in Lisbon.

  6. Bioluminescence in the high Arctic during the polar night

    OpenAIRE

    Berge, Jørgen; Båtnes, Anna Solvang; Johnsen, Geir; Blackwell, Susan; Moline, Mark A.

    2012-01-01

    This study examines the composition and activity of the planktonic community during the polar night in the high Arctic Kongsfjord, Svalbard. Our results are the first published evidence of bioluminescence among zooplankton during the Arctic polar night. The observations were collected by a bathyphotometer detecting bioluminescence, integrated into an autonomous underwater vehicle, to determine the concentration and intensity of bioluminescent flashes as a function of time of day and depth. To...

  7. As different as day and night: evidence from root lifespan

    OpenAIRE

    W. Bai; Xia, J.; Wan, S.; Zhang, W; Li, L.

    2011-01-01

    Roots are key components of terrestrial ecosystem C cycling and play an important role in regulation of the response of terrestrial ecosystem to global climate warming, which occurs with greater warming magnitudes at night than during daytime across different regions on the Earth. However, there has been no detailed study to examine the effect of asymmetrical warming on root dynamics at the level of terrestrial ecosystem. To understand the effects of day and night warming on root lifes...

  8. Adaptation of Shift Sequence Based Method for High Number in Shifts Rostering Problem for Health Care Workers

    Directory of Open Access Journals (Sweden)

    Mindaugas Liogys

    2013-08-01

    is inefficient, because of large amount of shifts sequences (feasible shifts sequences are approximately 260 thousands.In order to speed up roster construction process shifts are grouped to four groups: morning shifts, day shifts, night shifts and duty shifts. There are only 64 feasible shifts sequences, in this case.After roster construction shift groups are replaced with the one of shift belonging to that group of shifts.When all shifts are added to roster, computation of workload for each schedule is performed. If computed workload is equal to the one defined in working contract, then this schedule is complete, else begin shifts revision process. During revision process those schedules are considered which do not meet work contract requirements.If computed workload is larger than the one defined in working contract, each shift is replaced with the shift, if it’s possible, with lesser duration time. If computed workload is lesser than the one defined in working contract, each shift is replaced with the shift, if it’s possible, with larger duration time.This process continues while schedule does not meet workload requirement defined in working contract or no further improvement can be made.Research limitations/implications—Problem dimension: 27 health care workers, 15 shifts, over 20 soft constraints, rostering period—one calendar month.Practical implications – modifications made to shift sequence based approach allows to construct a roster for one of the major Lithuania’s hospitals personnel in shorter time.Originality/Value—modification of shift sequence based approach is proposed.Research type: research paper.

  9. Adaptation of Shift Sequence Based Method for High Number in Shifts Rostering Problem for Health Care Workers

    Directory of Open Access Journals (Sweden)

    Mindaugas Liogys

    2011-08-01

    problem is inefficient, because of large amount of shifts sequences (feasible shifts sequences are approximately 260 thousands.In order to speed up roster construction process shifts are grouped to four groups: morning shifts, day shifts, night shifts and duty shifts. There are only 64 feasible shifts sequences, in this case.After roster construction shift groups are replaced with the one of shift belonging to that group of shifts.When all shifts are added to roster, computation of workload for each schedule is performed. If computed workload is equal to the one defined in working contract, then this schedule is complete, else begin shifts revision process. During revision process those schedules are considered which do not meet work contract requirements.If computed workload is larger than the one defined in working contract, each shift is replaced with the shift, if it’s possible, with lesser duration time. If computed workload is lesser than the one defined in working contract, each shift is replaced with the shift, if it’s possible, with larger duration time.This process continues while schedule does not meet workload requirement defined in working contract or no further improvement can be made.Research limitations/implications—Problem dimension: 27 health care workers, 15 shifts, over 20 soft constraints, rostering period—one calendar month.Practical implications – modifications made to shift sequence based approach allows to construct a roster for one of the major Lithuania’s hospitals personnel in shorter time.Originality/Value—modification of shift sequence based approach is proposed.

  10. Making Shifts toward Proficiency

    Science.gov (United States)

    McGatha, Maggie B.; Bay-Williams, Jennifer M.

    2013-01-01

    The Leading for Mathematical Proficiency (LMP) Framework (Bay-Williams et al.) has three components: (1) The Standards for Mathematical Practice; (2) Shifts in classroom practice; and (3) Teaching skills. This article briefly describes each component of the LMP framework and then focuses more in depth on the second component, the shifts in…

  11. Shifting employment revisited

    NARCIS (Netherlands)

    Cremers, Jan; Gramuglia, Alessia

    2014-01-01

    The CLR-network examined in 2006 the phenomenon of undeclared labour, with specific regard to the construction sector. The resulting study, Shifting Employment: undeclared labour in construction (Shifting-study hereafter), gave evidence that this is an area particularly affected by undeclared activi

  12. OpenShift cookbook

    CERN Document Server

    Gulati, Shekhar

    2014-01-01

    If you are a web application developer who wants to use the OpenShift platform to host your next big idea but are looking for guidance on how to achieve this, then this book is the first step you need to take. This is a very accessible cookbook where no previous knowledge of OpenShift is needed.

  13. Shifted Independent Component Analysis

    DEFF Research Database (Denmark)

    Mørup, Morten; Madsen, Kristoffer Hougaard; Hansen, Lars Kai

    2007-01-01

    Delayed mixing is a problem of theoretical interest and practical importance, e.g., in speech processing, bio-medical signal analysis and financial data modelling. Most previous analyses have been based on models with integer shifts, i.e., shifts by a number of samples, and have often been carried...

  14. Coupling of Thermal Mass with Night Ventilation in Buildings

    Science.gov (United States)

    Endurthy, Akhilesh Reddy

    Passive cooling designs & technologies offer great promise to lower energy use in buildings. Though the working principles of these designs and technologies are well understood, simplified tools to quantitatively evaluate their performance are lacking. Cooling by night ventilation, which is the topic of this research, is one of the well known passive cooling technologies. The building's thermal mass can be cooled at night by ventilating the inside of the space with the relatively lower outdoor air temperatures, thereby maintaining lower indoor temperatures during the warmer daytime period. Numerous studies, both experimental and theoretical, have been performed and have shown the effectiveness of the method to significantly reduce air conditioning loads or improve comfort levels in those climates where the night time ambient air temperature drops below that of the indoor air. The impact of widespread adoption of night ventilation cooling can be substantial, given the large fraction of energy consumed by air conditioning of buildings (about 12-13% of the total electricity use in U.S. buildings). Night ventilation is relatively easy to implement with minimal design changes to existing buildings. Contemporary mathematical models to evaluate the performance of night ventilation are embedded in detailed whole building simulation tools which require a certain amount of expertise and is a time consuming approach.

  15. Night sky brightness at San Pedro Martir Observatory

    CERN Document Server

    Plauchu-Frayn, I; Colorado, E; Herrera, J; Cordova, A; Cesena, U; Avila, F

    2016-01-01

    We present optical UBVRI zenith night sky brightness measurements collected on eighteen nights during 2013--2016 and SQM measurements obtained daily over twenty months during 2014--2016 at the Observatorio Astronomico Nacional on the Sierra San Pedro Martir (OAN-SPM) in Mexico. The UBVRI data is based upon CCD images obtained with the 0.84m and 2.12m telescopes, while the SQM data is obtained with a high-sensitivity, low-cost photometer. The typical moonless night sky brightness at zenith averaged over the whole period is U = 22.68, B = 23.10, V = 21.84, R = 21.04, I = 19.36, and SQM = 21.88 mag/square arcsec, once corrected for zodiacal light. We find no seasonal variation of the night sky brightness measured with the SQM. The typical night sky brightness values found at OAN-SPM are similar to those reported for other astronomical dark sites at a similar phase of the solar cycle. We find a trend of decreasing night sky brightness with decreasing solar activity during period of the observations. This trend im...

  16. Effect of carbohydrates and night temperature on night respiration in rice.

    Science.gov (United States)

    Peraudeau, Sébastien; Lafarge, Tanguy; Roques, Sandrine; Quiñones, Cherryl O; Clement-Vidal, Anne; Ouwerkerk, Pieter B F; Van Rie, Jeroen; Fabre, Denis; Jagadish, Krishna S V; Dingkuhn, Michael

    2015-07-01

    Global warming causes night temperature (NT) to increase faster than day temperature in the tropics. According to crop growth models, respiration incurs a loss of 40-60% of photosynthate. The thermal sensitivity of night respiration (R(n)) will thus reduce biomass. Instantaneous and acclimated effects of NT on R(n) of leaves and seedlings of two rice cultivars having a variable level of carbohydrates, induced by exposure to different light intensity on the previous day, were investigated. Experiments were conducted in a greenhouse and growth chambers, with R(n) measured on the youngest fully expanded leaves or whole seedlings. Dry weight-based R(n) was 2.6-fold greater for seedlings than for leaves. Leaf R(n) was linearly related to starch (positive intercept) and soluble sugar concentration (zero intercept). Increased NT caused higher R(n) at a given carbohydrate concentration. The change of R(n) at NT increasing from 21 °C to 31 °C was 2.4-fold for the instantaneous response but 1.2- to 1.7-fold after acclimation. The maintenance component of R(n) (R(m)'), estimated by assimilate starvation, averaged 28% in seedlings and 34% in leaves, with no significant thermal effect on this ratio. The acclimated effect of increased NT on R(m)' across experiments was 1.5-fold for a 10 °C increase in NT. No cultivar differences were observed in R(n) or R(m)' responses. The results suggest that the commonly used Q10=2 rule overestimates thermal response of respiration, and R(n) largely depends on assimilate resources.

  17. Effects of Shift Work on Cognitive Performance, Sleep Quality, and Sleepiness among Petrochemical Control Room Operators.

    Science.gov (United States)

    Kazemi, Reza; Haidarimoghadam, Rashid; Motamedzadeh, Majid; Golmohamadi, Rostam; Soltanian, Alireza; Zoghipaydar, Mohamad Reza

    2016-01-01

    Shift work is associated with both sleepiness and reduced performance. The aim of this study was to examine cognitive performance, sleepiness, and sleep quality among petrochemical control room shift workers. Sixty shift workers participated in this study. Cognitive performance was evaluated using a number of objective tests, including continuous performance test, n-back test, and simple reaction time test; sleepiness was measured using the subjective Karolinska Sleepiness Scale (KSS); and sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI) questionnaire. ANCOVA, t-test, and repeated-measures ANOVA were applied for statistical analyses, and the significance level was set at p cognitive performance, except for omission error, significantly decreased at the end of both day and night shifts (p cycle of sleep, induced cognitive performance decline at the end of both day and night shifts, and increased sleepiness in night shift. It, thus, seems necessary to take ergonomic measures such as planning for more appropriate shift work and reducing working hours. PMID:27103934

  18. Shift work, health, the working time regulations and health assessments.

    Science.gov (United States)

    Nicholson, P J; D'Auria, D A

    1999-04-01

    Shift work and night work in particular have been associated with sleep difficulties, general malaise, fatigue, peptic ulceration, ischaemic heart disease, cigarette smoking and adverse pregnancy outcome. The medical conditions previously regarded as making individuals unsuitable for shift work show wide ranging patho-physiological activity and there is no published evidence for any such condition to be regarded an absolute reason to exclude an individual from shift work. The fulfilment of the legal obligations of the Working Time Regulations 1998 is neither prescribed nor constrained in any way. It is advisable therefore to build on existing health procedures where they are in effect. Periodic health questionnaires can offer health professionals an opportunity to detect any disorder likely to be aggravated by shift work or by a combination of shift work, job demands and workplace conditions. A further purpose of the questionnaire is the assessment of ability to undertake shift work duties. However, health questionnaires are neither sensitive nor specific enough to be used to select applicants or employees for shift work, since they do not consistently predict tolerance of shift work or subsequent health problems. Whether employers should offer anything more than a simple questionnaire will depend on the culture of the company and accessibility of health services. Screening programmes affect many people relative to the few who benefit and with existing knowledge, periodic general health examinations performed in asymptomatic subjects have limited predictive or preventive value. PMID:10451593

  19. Helicopter flights with night-vision goggles: Human factors aspects

    Science.gov (United States)

    Brickner, Michael S.

    1989-01-01

    Night-vision goggles (NVGs) and, in particular, the advanced, helmet-mounted Aviators Night-Vision-Imaging System (ANVIS) allows helicopter pilots to perform low-level flight at night. It consists of light intensifier tubes which amplify low-intensity ambient illumination (star and moon light) and an optical system which together produce a bright image of the scene. However, these NVGs do not turn night into day, and, while they may often provide significant advantages over unaided night flight, they may also result in visual fatigue, high workload, and safety hazards. These problems reflect both system limitations and human-factors issues. A brief description of the technical characteristics of NVGs and of human night-vision capabilities is followed by a description and analysis of specific perceptual problems which occur with the use of NVGs in flight. Some of the issues addressed include: limitations imposed by a restricted field of view; problems related to binocular rivalry; the consequences of inappropriate focusing of the eye; the effects of ambient illumination levels and of various types of terrain on image quality; difficulties in distance and slope estimation; effects of dazzling; and visual fatigue and superimposed symbology. These issues are described and analyzed in terms of their possible consequences on helicopter pilot performance. The additional influence of individual differences among pilots is emphasized. Thermal imaging systems (forward looking infrared (FLIR)) are described briefly and compared to light intensifier systems (NVGs). Many of the phenomena which are described are not readily understood. More research is required to better understand the human-factors problems created by the use of NVGs and other night-vision aids, to enhance system design, and to improve training methods and simulation techniques.

  20. Shift Verification and Validation

    Energy Technology Data Exchange (ETDEWEB)

    Pandya, Tara M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Evans, Thomas M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Davidson, Gregory G [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Johnson, Seth R. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Godfrey, Andrew T. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2016-09-07

    This documentation outlines the verification and validation of Shift for the Consortium for Advanced Simulation of LightWater Reactors (CASL). Fivemain types of problems were used for validation: small criticality benchmark problems; full-core reactor benchmarks for light water reactors; fixed source coupled neutron-photon dosimetry benchmarks; depletion/burnup benchmarks; and full-core reactor performance benchmarks. We compared Shift results to measured data and other simulated Monte Carlo radiation transport code results and found very good agreement in a variety of comparison measures. These include prediction of critical eigenvalue, radial and axial pin power distributions, rod worth, leakage spectra, and nuclide inventories over a burn cycle. Based on this validation of Shift, we are confident in Shift to provide reference results for CASL benchmarking.

  1. GLOBE at Night: Scientific Research outside of the Classroom

    Science.gov (United States)

    Henderson, S.; Walker, C. E.; Geary, E.; Pompea, S. M.

    2005-12-01

    Increased and robust understanding of our environment requires learning opportunities that take place outside of the traditional K-12 classroom and beyond the confines of the school day. GLOBE at Night is a new event within The GLOBE Program that provides a mechanism for a nontraditional learning activity involving teachers, students, and their families taking observations of the night sky around the world and reporting their observations via a central data base for analysis. To support activities centered on authentic research experiences such as GLOBE at Night, The GLOBE Program has changed its approach to professional development (PD). The new focus of GLOBE PD efforts is centered on teachers being able to facilitate student research in and out of the classroom reflective of authentic scientific research experiences. It has been recognized that there is a critical need for effective teacher professional development programs that support teacher involvement in meaningful scientific research that encourages partnerships between scientists, teachers, and students. Partnerships promoting scientific research for K-12 audiences provides the foundation for The GLOBE Program, an international inquiry-based program designed to engage teachers with their students in partnership with research scientists to better understand the environment at local, regional, and global scales. GLOBE is an ongoing international science and education program that unites students, teachers, and scientists in the study of the Earth System. Students participating in GLOBE engage in hands-on activities, including the collection, analysis, and sharing of research quality scientific data with their peers around the world. Students interact with members of the science community who use the data collected from locations around the world in their research - data that would often not be available otherwise. As of September 2005, over 30,000 teachers representing over 16,000 schools worldwide have

  2. How much wrapping do babies need at night?

    Science.gov (United States)

    Wigfield, R E; Fleming, P J; Azaz, Y E; Howell, T E; Jacobs, D E; Nadin, P S; McCabe, R; Stewart, A J

    1993-08-01

    In a longitudinal, population based study, overnight temperature recordings were made in the bedrooms of 152 babies aged 3-18 weeks and the insulation provided by their bedclothing was assessed. Outdoor temperatures for the study nights were also available. Parents applied more insulation on colder nights with lower bedroom temperatures than on warmer nights (mean 8.5 tog at 15 degrees C minimum bedroom temperature falling to 4.0 tog at 25 degrees C). For a particular temperature they also applied 2 tog more insulation in winter than in summer. The amounts of bedclothing used in the home were compared with insulation levels predicted to achieve thermo-neutrality over a similar range of environmental temperature from heat balance studies in young infants. They corresponded closely. The average amount of bedclothing chosen for babies in Avon allows them to remain in thermoneutral conditions throughout the night. These values are proposed as broad guidelines for the thermal care of young babies at night.

  3. Relation Between Night Urinary Free Cortisol and Hypertension in Youth

    Institute of Scientific and Technical Information of China (English)

    叶涛; 刘治全; 傅毅; 牟建军; 傅西汉; 高保林; 张晓红

    2003-01-01

    Objectives To study the relation between night urinary free cortisol (UFC) ex-cretion and hypertension in youth. Methods Nighturinary free cortisol excretion and blood pressure & itsrelated factor were measured in 188 young people.Results In young men with hypertension the 8 h'snight UFC excretion was significantly higher than thatin the group with normal blood pressure 21.57 ± 6.28μg/8hvs 10. 54 ± 5. 46μg/8 h (P <0.05). Inagroup of young people with positive family history ofhypertension, the night UFC excretion was much higherthan that in the group with negative family history ofhypertension. Men excrete much more night UFC thanwomen (12.73±5.85 μg/8hvs7.80±4.15 μg/8h, P < 0. 05). Conclusions There is an associationbetween hypertension and high 8h's night UFC excre-tion; furthermore, there is gender difference in nightUFC excretion.

  4. Shift work: health, performance and safety problems, traditional countermeasures, and innovative management strategies to reduce circadian misalignment

    OpenAIRE

    Smith; Eastman CI

    2012-01-01

    Mark R Smith, Charmane I EastmanBiological Rhythms Research Laboratory, Rush University Medical Center, Chicago, IL, USAAbstract: There are three mechanisms that may contribute to the health, performance, and safety problems associated with night-shift work: (1) circadian misalignment between the internal circadian clock and activities such as work, sleep, and eating, (2) chronic, partial sleep deprivation, and (3) melatonin suppression by light at night. The typical countermeasures, such as ...

  5. An Exploratory Study of the Relationship between Night Eating Syndrome and Depression among College Students

    Science.gov (United States)

    Thompson, Sharon H.; DeBate, Rita DiGioacchino

    2010-01-01

    Night eating syndrome criteria include skipping breakfast, night eating, and sleep difficulties. It is associated with mood disturbances, particularly depression, and may contribute to later obesity development. Most research on night eating syndrome has focused on obese persons seeking weight loss treatment, and little is known about night eating…

  6. Dark or short nights: differential latitudinal constraints in nestling provisioning patterns of a nocturnally hunting bird species.

    Directory of Open Access Journals (Sweden)

    Markéta Zárybnická

    Full Text Available In diurnal bird species, individuals breeding at high latitudes have larger broods than at lower latitudes, which has been linked to differences in the daily time available for foraging. However, it remains unclear how latitude is linked with parental investment in nocturnal species. Here, we investigate nestling provisioning rates of male Tengmalm's owls in two populations at different latitudes (Czech Republic 50 °N; Finland 63 °N with the help of cameras integrated into nest boxes. Clutch sizes were smaller in the Czech population (CZ: 5.1 ± 0.1; FIN: 6.6 ± 0.1, but given the higher nestling mortality in the Finnish population, the number of fledglings did not differ between the two populations (CZ: 3.5 ± 0.3; FIN: 3.9 ± 0.2. Nestling provisioning patterns varied within days, over the reproductive season and between the two sites. Males delivered most food at dusk and dawn, having peak delivery rates at sun angles of -11° to -15° at both sites, and males increased the prey delivery rates with higher nestling requirements. Given the longer nights during summer in the Czech Republic compared to Finland, Czech males only showed a small shift in their delivery peak during the night from -17° in April to -14° in July. In contrast, Finnish males shifted their peak of prey delivery from -11° in April to -1° in July. Consequently, Czech males had a longer hunting time per night around midsummer when feeding young (360 min than Finnish males (270 min. This suggests that nocturnal owl species in northern populations are constrained by the short nights during the breeding season, which can limit the number of young they can raise. Moreover, owls in northern populations are additionally constrained through the unpredictable changes in food availability between years, and both these factors are likely to influence the reproductive investment between populations.

  7. The fourth shift: exploring the gendered nature of sleep disruption among couples with children.

    Science.gov (United States)

    Venn, Susan; Arber, Sara; Meadows, Robert; Hislop, Jenny

    2008-03-01

    The study of sleep has been neglected within sociology, yet may provide insights into fundamental aspects of the nature of gender inequalities. This article examines how, for couples with children, sleep is influenced by the gendered nature of caring. A key concern is not only who gets up to care for children's physical needs at night, but whether this changes with women's increased role in the labour market. Of concern also is how changes in the nature of caring for older children, as opposed to young children, may impact on parents' sleep. This article analyses qualitative data from an ESRC funded multi-disciplinary project on couples' sleep based on in-depth audio-tape recorded interviews with 26 couples (aged 20-59) with younger and older children. Additionally, one week's audio sleep diaries were completed and follow up in-depth interviews were undertaken with each partner on an individual basis. Physical and emotional care for young children at night was largely provided by women, with a lack of explicit negotiation between partners about who provides this care, even when women return to employment. Thus, considerably more women than men continued their daytime and evening shifts, as well as undertaking an ongoing third shift of sentient activity for their family, into the night. This resulted in a fourth night-time shift where physical caring, and sentient activities continued. As a consequence, women were more likely to subjugate their own sleep needs to those of their family. Fathers did not, in general, undertake this fourth night-time shift. Those that did were more likely to be the fathers of young adult children who were staying out late at night, with the focus of their concerns being the safety of their children. PMID:18321332

  8. Considerations of circadian impact for defining 'shift work' in cancer studies: IARC Working Group Report

    NARCIS (Netherlands)

    R.G. Stevens; J. Hansen; G. Costa; E. Haus; T. Kauppinen; K.J. Aronson; G. Castaño-Vinyals; S. Davis; M.H.W. Frings-Dresen; L. Fritschi; M. Kogevinas; K. Kogi; J.A. Lie; A. Lowden; B. Peplonska; B. Pesch; E. Pukkala; E. Schernhammer; R.C. Travis; R. Vermeulen; T. Zheng; V. Cogliano; K. Straif

    2011-01-01

    Based on the idea that electric light at night might account for a portion of the high and rising risk of breast cancer worldwide, it was predicted long ago that women working a non-day shift would be at higher risk compared with day-working women. This hypothesis has been extended more recently to

  9. Low Cost Night Vision System for Intruder Detection

    Science.gov (United States)

    Ng, Liang S.; Yusoff, Wan Azhar Wan; R, Dhinesh; Sak, J. S.

    2016-02-01

    The growth in production of Android devices has resulted in greater functionalities as well as lower costs. This has made previously more expensive systems such as night vision affordable for more businesses and end users. We designed and implemented robust and low cost night vision systems based on red-green-blue (RGB) colour histogram for a static camera as well as a camera on an unmanned aerial vehicle (UAV), using OpenCV library on Intel compatible notebook computers, running Ubuntu Linux operating system, with less than 8GB of RAM. They were tested against human intruders under low light conditions (indoor, outdoor, night time) and were shown to have successfully detected the intruders.

  10. Does dental biofilm accumulation differ between night and day?

    DEFF Research Database (Denmark)

    Dige, Irene; Nyvad, Bente

    Objective: The initial microbial colonization of dental surfaces has been studied thoroughly by classical ultrastructural and microbiological studies and further analysed by fluorescent methods. Most of these studies, however, do not differentiate between biofilms formed during night and day....... The purpose of the study was to perform a quantitative and qualitative analysis of in situ dental biofilms collected during night and day, respectively. We hypothesised that there is a circadian rhythm in the accumulation of bacteria during initial biofilm formation. Methods: Biofilms were collected....... The qualitative analysis confirmed this difference within all individuals but with large inter-individual variation in the degree of microbial coverage and bacterial composition. Conclusions: The study provides firm evidence that initial biofilm formation decreases during night. Low biofilm accumulation during...

  11. At the heart of CERN for one night

    CERN Document Server

    CERN Bulletin

    2011-01-01

    Some 200 young people, mostly from neighbouring Switzerland or France – but also from Italy, Great Britain and Poland – took part in Researchers Night on Friday, 23 September. Interviewed by the Bulletin after they had returned from the control rooms of the LHC and its experiments, the pupils were full of enthusiasm following, by all accounts, an unforgettable evening.   Participants of the 2011 Researchers Night enjoy their visit to CMS. The second edition of CERN Researchers Night was a great success, with international participants as well as a substantial local contingent. Some 200 young people aged 13 to 18 registered on the event’s website and spent two hours in one of the control rooms of the LHC machine and its experiments. Laëtitia Pedroso, a member of the Communication Group who participated in the organisation of this event, noted with satisfaction: “Most of the pupils came from neighbouring France and Switzerland, but we also welcom...

  12. “ALADDIN” FROM ARABIAN NIGHTS TO DISNEY: THE CHANGE OF DISCOURSE AND IDEOLOGY

    Directory of Open Access Journals (Sweden)

    Mundi Rahayu

    2015-08-01

    Full Text Available This study compares the folktale “The Story of Aladdin and the Wonderful Lamp” from the Arabian Nights, and the animated film produced by Walt Disney Feature Animation under the title “Aladdin” (1992. The differences of those two stories in two different medias shows the shifts of ideology and discourse. The study applies Fairclough’s Critical Discourse Analysis, by applying the three stages of analysis.  The first level is micro level, on the language practice. In the second level, mezo level, discusses the discourse practice that covers the intertextuality of ideas, concept as the reference in delivering the ideas. In the third level, macro level, it interprets the social context of   particular events, especially the social practice in exercising their power. The finding shows that the Disney’s Aladdin campaigns ideology that refers to the American values such as freedom and American heroism. Besides, the discourse of Arab barbarism is developed in line with the practice of   stereotyping such as labeling the Arab people as barbaric, bad, silly and wicked as well as dangerous Arabs. These imply to the removals of the Islamic messages and values that exists in the original tales of Arabian Nights. The Disney’s Aladdin completely removes the Islamic messages and values, and changes them into ‘American values’.

  13. The association between different night shiftwork factors and breast cancer: a case–control study

    Science.gov (United States)

    Fritschi, L; Erren, T C; Glass, D C; Girschik, J; Thomson, A K; Saunders, C; Boyle, T; El-Zaemey, S; Rogers, P; Peters, S; Slevin, T; D'Orsogna, A; de Vocht, F; Vermeulen, R; Heyworth, J S

    2013-01-01

    Background: Research on the possible association between shiftwork and breast cancer is complicated because there are many different shiftwork factors, which might be involved including: light at night, phase shift, sleep disruption and changes in lifestyle factors while on shiftwork (diet, physical activity, alcohol intake and low sun exposure). Methods: We conducted a population-based case–control study in Western Australia from 2009 to 2011 with 1205 incident breast cancer cases and 1789 frequency age-matched controls. A self-administered questionnaire was used to collect demographic, reproductive, and lifestyle factors and lifetime occupational history and a telephone interview was used to obtain further details about the shiftwork factors listed above. Results: A small increase in risk was suggested for those ever doing the graveyard shift (work between midnight and 0500 hours) and breast cancer (odds ratio (OR)=1.16, 95% confidence interval (CI)=0.97–1.39). For phase shift, we found a 22% increase in breast cancer risk (OR=1.22, 95% CI=1.01–1.47) with a statistically significant dose–response relationship (P=0.04). For the other shiftwork factors, risks were marginally elevated and not statistically significant. Conclusion: We found some evidence that some of the factors involved in shiftwork may be associated with breast cancer but the ORs were low and there were inconsistencies in duration and dose–response relationships. PMID:24022188

  14. Seeing Stars: A GLOBE at Night Campaign Update

    Science.gov (United States)

    Walker, Constance E.; Pompea, S. M.; Sparks, R. T.; Newhouse, M.

    2012-01-01

    The emphasis in the international citizen-science, star-hunting campaign, GLOBE at Night, is in bringing awareness to the public on issues of light pollution. Light pollution threatens not only observatory sites and our "right to starlight", but can affect energy consumption, wildlife and health. GLOBE at Night has successfully reached a few 100,000 citizen-scientists. What has done in the last year to contribute to its success? • To promote the campaign via popular social media, GLOBE at Night created Facebook and Twitter pages. • Videos have been created for 4 out of 8 Dark Skies Rangers activities. • Sky brightness measurements can be submitted in real time with smart phones or tablets using the new Web application at www.globeatnight.org/webapp/. The location, date and time register automatically. • As a proto-type, an adopt-a-street program had people in Tucson take measurements every mile for the length of the street. Grid measurements canvassed the town, allowing for comparisons of light levels over time. • The increase to 2 campaigns in 2011 re-enforces these studies. In 2012, the campaign will be offered 4 times for 10 days a month: January 14-23, February 12-21, March 13-22 and April 11-20. • A new Web application (www.globeatnight.org/mapapp/) allows for mapping GLOBE at Night data points within a specified distance around a city or area of choice. The resulting maps are bookmarkable and shareable. • NOAO and Arizona Game and Fish Department started a project with GLOBE at Night data and bat telemetry to examine a dark skies corridor in Tucson where endangered bats fly. While providing these updates to the GLOBE at Night program, the presentation will highlight the education and outreach value of the program's resources and outcomes, lessons learned, successes and pitfalls in communicating awareness with the public and attracting young people to study science.

  15. Public outreach: Multitudes attend the Night of Science

    CERN Multimedia

    2006-01-01

    The Night of Science, which took place in the parc de la Perle du Lac in Geneva last weekend, was a great success, with 30000 visitors attending according to the organisers. Many curious people flocked to the stands and animations until late on Saturday night and all afternoon on Sunday. The CERN stand (photo) received a great amount of interest from participants. Both kids and adults discovered the activities of the Laboratory and the data-processing revolution initiated by CERN, from the Web to the Computing Grid. Hats off to the CERN collaborators in the Communication Group and IT Department who made this event a success.

  16. Night vision of the post-LASIK myope

    Directory of Open Access Journals (Sweden)

    R. Hansraj

    2007-01-01

    Full Text Available Purpose: Poor night vision has been reported as one of the side-effects of LASIK,  however, this area has not been widely studied.  This study therefore set out to assess and quantify the visual status of the post-LASIK patient in dim illumination as an indication of visual performance at night.  This was achieved by assessing the night vision threshold, glare vision threshold and glare recovery time.Setting: The study was carried out in Durban, Kwazulu-Natal in South Africa.Method: This study used the Night Sight Meter for assessment of the night vision thresholds, glare vision thresholds and glare  recovery times of individuals who had had LASIK at least one year before commencement of the study.  The inclusion criteria were post-surgical interval following LASIK of at least one year and willingness to participate in the study.  The exclusion criteria included previous ocular surgery other than LASIK, current ocular disease and any systemic illnesses.   One hundred subjects were selected from participating ophthalmologists’ records, using convenience sampling, at different post-operative periods that ranged from 12 to 57 months.  Other refractive findings taken included post-LASIK visual acuity measured using the Snellen Visual Acuity chart and post-LASIK refractive error, measured with the standard subjective refraction tests which included duochrome, Jackson crossed-cylinder and Humphrey’s Immediate Contrast test, which are used for comparison in this study.Results: Post-operatively, the majority of the eyes (89.2% were classified as having ‘poor’ night vision thresholds.  A similar trend was observed in the case of the glare vision thresholds as 84.7% of the eyes fell into the classification of below average.  The degree of pre-operative myopia appears to have an effect on the post-LASIK night vision and glare  thresholds.  Only glare recovery  time was not affected as 51.2% of the subjects displayed good recovery

  17. LHCb: A New Nightly Build System for LHCb

    CERN Multimedia

    Clemencic, M

    2013-01-01

    The nightly build system used so far by LHCb has been implemented as an extension on the system developed by CERN PH/SFT group (as presented at CHEP2010). Although this version has been working for many years, it has several limitations in terms of extensibility, management and ease of use, so that it was decided to develop a new version based on a continuous integration system. In this paper we describe a new implementation of the LHCb Nightly Build System based on the open source continuous integration system Jenkins and report on the experience on the configuration of a complex build workflow in Jenkins.

  18. Soulless Bodies in Elie Wiesel’s Night

    Institute of Scientific and Technical Information of China (English)

    郑莹

    2014-01-01

    Night is Elie Wiesel’s classic memoir of the Holocaust. One of its central themes is that once involved in war, a person is doomed to undergo a transformation from a human being to a soulless body. To understand this theme, we shall have to travel with Eliezer, the protagonist as well as the first person narrator, through the long nights of living in fear of hunger, terror, and violence. Hopefully, the leg of this journey would reveal how the consistent exposure to traumatic experiences can compel a person to abandon the soul as his or her emotional and spiritual homebase.

  19. Protein Chemical Shift Prediction

    CERN Document Server

    Larsen, Anders S

    2014-01-01

    The protein chemical shifts holds a large amount of information about the 3-dimensional structure of the protein. A number of chemical shift predictors based on the relationship between structures resolved with X-ray crystallography and the corresponding experimental chemical shifts have been developed. These empirical predictors are very accurate on X-ray structures but tends to be insensitive to small structural changes. To overcome this limitation it has been suggested to make chemical shift predictors based on quantum mechanical(QM) calculations. In this thesis the development of the QM derived chemical shift predictor Procs14 is presented. Procs14 is based on 2.35 million density functional theory(DFT) calculations on tripeptides and contains corrections for hydrogen bonding, ring current and the effect of the previous and following residue. Procs14 is capable at performing predictions for the 13CA, 13CB, 13CO, 15NH, 1HN and 1HA backbone atoms. In order to benchmark Procs14, a number of QM NMR calculatio...

  20. Absorption driven focus shift

    Science.gov (United States)

    Harrop, N.; Wolf, S.; Maerten, O.; Dudek, K.; Ballach, S.; Kramer, R.

    2016-03-01

    Modern high brilliance near infrared lasers have seen a tremendous growth in applications throughout the world. Increased productivity has been achieved by higher laser power and increased brilliance of lasers. Positive impacts on the performance and costs of parts are opposed to threats on process stability and quality, namely shift of focus position over time. A high initial process quality will be reduced by contamination of optics, eventually leading to a focus shift or even destruction of the optics. Focus analysis at full power of multi-kilowatt high brilliance lasers is a very demanding task because of high power densities in the spot and the high power load on optical elements. With the newly developed high power projection optics, the High-Power Micro-Spot Monitor High Brilliance (HP-MSM-HB) is able to measure focus diameter as low as 20 μm at power levels up to 10 kW at very low internal focus shift. A main driving factor behind thermally induced focus shift is the absorption level of the optical element. A newly developed measuring system is designed to determine the relative absorption level in reference to a gold standard. Test results presented show a direct correlation between absorption levels and focus shift. The ability to determine the absorption level of optical elements as well as their performance at full processing power before they are put to use, enables a high level of quality assurance for optics manufacturers and processing head manufacturers alike.

  1. An object tracking method based on guided filter for night fusion image

    Science.gov (United States)

    Qian, Xiaoyan; Wang, Yuedong; Han, Lei

    2016-01-01

    Online object tracking is a challenging problem as it entails learning an effective model to account for appearance change caused by intrinsic and extrinsic factors. In this paper, we propose a novel online object tracking with guided image filter for accurate and robust night fusion image tracking. Firstly, frame difference is applied to produce the coarse target, which helps to generate observation models. Under the restriction of these models and local source image, guided filter generates sufficient and accurate foreground target. Then accurate boundaries of the target can be extracted from detection results. Finally timely updating for observation models help to avoid tracking shift. Both qualitative and quantitative evaluations on challenging image sequences demonstrate that the proposed tracking algorithm performs favorably against several state-of-art methods.

  2. Circadian disruption induced by light-at-night accelerates aging and promotes tumorigenesis in rats

    Science.gov (United States)

    Vinogradova, Irina A.; Anisimov, Vladimir N.; Bukalev, Andrey V.; Semenchenko, Anna V.; Zabezhinski, Mark A.

    2009-01-01

    We evaluated the effect of various light/dark regimens on the survival, life span and tumorigenesis in rats. Two hundred eight male and 203 females LIO rats were subdivided into 4 groups and kept at various light/dark regimens: standard 12:12 light/dark (LD); natural lighting of the North-West of Russia (NL); constant light (LL), and constant darkness (DD) since the age of 25 days until natural death. We found that exposure to NL and LL regimens accelerated development of metabolic syndrome and spontaneous tumorigenesis, shortened life span both in male and females rats as compared to the standard LD regimen. We conclude that circadian disruption induced by light-at-night accelerates aging and promotes tumorigenesis in rats. This observation supports the conclusion of the International Agency Research on Cancer that shift-work that involves circadian disruption is probably carcinogenic to humans. PMID:20157558

  3. Night vision devices. Citations from the NTIS data base

    Science.gov (United States)

    Habercom, G. E., Jr.

    1980-08-01

    This bibliography contains 323 citations in which various types of night vision devices are investigated. Most were developed for military applications but they can readily be adapted for civil usage, as for example, law enforcement. Abstracts on display screens, equipment design and effectiveness, electronic components, spurious noise reduction, and test methods are cited.

  4. Family Science Night: Fun Tips, Activities, and Ideas

    Science.gov (United States)

    Connell, Shelley S.

    2013-01-01

    At last! A practical, readable guide for teachers, school leaders, and parent/teacher associations that shows how to plan fun, hands-on science nights! Get easy-to-implement, content-rich tips and ideas that will cultivate positive attitudes toward science! Learn how to involve and actively engage families in their children's science education.…

  5. Obstacle detection during day and night conditions using stereo vision

    NARCIS (Netherlands)

    Dubbelman, G.; Mark, W. van der; Heuvel, J.C. van den; Groen, F.C.A.

    2007-01-01

    We have developed a stereo vision based obstacle detection (OD) system that can be used to detect obstacles in off-road terrain during both day and night conditions. In order to acquire enough depth estimates for reliable OD during low visibility conditions, we propose a stereo disparity (depth) est

  6. Using Process Drama to Deconstruct a Midsummer Night's Dream

    Science.gov (United States)

    Weltsek, Gustave

    2005-01-01

    Gustave Weltsek, a high school English teacher, has turned to process "A Midsummer Night's Dream" to avoid passing on traditional views and interpretations of the play. He has helped the students to see relevance in William Shakespeare's text by using improvisations to get them talking about issues that are important to them.

  7. Color the night : applying daytime colors to nighttime imagery

    NARCIS (Netherlands)

    Toet, A.

    2003-01-01

    We present a method to give (fused) multiband night-time imagery a natural day-time color appearance. For input, the method requires a false color RGB image that is produced by mapping 3 individual bands (or the first 3 principal components) of a multiband nightvision system to the respective channe

  8. Day/Night Cycle: Mental Models of Primary School Children

    Science.gov (United States)

    Chiras, Andreas

    2008-01-01

    The study investigated the mental models of primary school children related to the day/night cycle. Semi-structure interviews were conducted with 40 fourth-grade and 40 sixth-grade children. Qualitative and quantitative analysis of the data indicated that the majority of the children were classified as having geocentric models. The results also…

  9. Hosting a Family Literacy Night at Your School

    Science.gov (United States)

    McGahey, Michelle

    2005-01-01

    The idea for a family literacy event resulted because teachers wanted more time to share reading strategies with parents, and parents wanted more information on how they could support and encourage their children with reading at home. With great success, Holy Cross School, Kemptville, Ontario, hosted a Family Literacy Night that coincided with the…

  10. Family Math Night: Middle School Math Standards in Action

    Science.gov (United States)

    Taylor-Cox, Jennifer; Oberdorf, Christine

    2006-01-01

    Why should schools have a Family Math Night? It helps students learn essential math concepts. It gives parents a chance to serve as models of motivation, persistence and competence. It promotes math success in a supportive setting. With its step-by-step directions and suggestions for both teachers and parents, this book takes the worry out of…

  11. Bangalore @ night: Indian IT professionals and the global clock ticking

    NARCIS (Netherlands)

    M. Baas

    2009-01-01

    This article deals with the question of what the night means to IT (information technology) professionals working in the Indian IT industry in Bangalore. In particular, it argues that the way IT work gets done (in India) demands a type of flexibility of an IT worker that‘forces’ him to rethink perce

  12. Night sky photometry with amateur-grade digital cameras

    Science.gov (United States)

    Mrozek, Tomasz; Gronkiewicz, Dominik; Kolomanski, Sylwester; Steslicki, Marek

    2015-08-01

    Measurements of night sky brightness can give us valuable information on light pollution. The more the measurements we have the better is our knowledge on the spatial distribution of the pollution on local and global scale.High accuracy professional photometry of night sky can be performed with dedicated instruments. The main drawbacks of this method are high price and low mobility. This limits an amount of observers and therefore amount of photometric data that can be collected. In order to overcome the problem of limited amount of data we can involve amateur astronomers in photometry of night sky. However, to achieve this goal we need a method that utilizes equipment which is usually used by amateur astronomers, e.g digital cameras.We propose a method that enables good accuracy photometry of night sky with a use of digital compact or DSLR cameras. In the method reduction of observations and standarization to Johnson UBV system are performed. We tested several cameras and compared results to Sky Quality Meter (SQM) measurements. The overall consistency for results is within 0.2 mag.

  13. Fast natural color mapping for night-time imagery

    NARCIS (Netherlands)

    Hogervorst, M.A.; Toet, A.

    2010-01-01

    We present a new method to render multi-band night-time imagery (images from sensors whose sensitive range does not necessarily coincide with the visual part of the electromagnetic spectrum, e.g. image intensifiers, thermal camera's) in natural daytime colors. The color mapping is derived from the c

  14. Legal protection of the night sky in Andalusia (Western Europe)

    Science.gov (United States)

    Enríquez, David Galadí; Ranea-Palma, Ángela

    2015-03-01

    Andalusia (Spain) houses several astronomical observatories, among them the main observational facility in continental Europe: Calar Alto Observatory. In recent years, the regional government of Andalusia has been setting up a regulation to protect the natural conditions of darkness at night all over the region. This regulation includes several outstanding features and poses specific rules to protect the influence area of Calar Alto Observatory.

  15. Experimental Investigation of Heat Transfer during Night-Time Ventilation

    DEFF Research Database (Denmark)

    Artmann, Nikolai; Jensen, Rasmus Lund; Manz, H.;

    2010-01-01

    is the heat transfer at the internal room surfaces. Increased convection is expected due to high air flow rates and the possibility of a cold air jet flowing along the ceiling, but the magnitude of these effects is hard to predict. In order to improve the predictability, heat transfer during night...

  16. CMS Virtual Visits @ European Researchers Night, 30 September 2016

    CERN Multimedia

    Lapka, Marzena

    2016-01-01

    CMS hosted four virtual visits during European Researchers Night. Audience from Greece (NCRS Demokritos, Athens), Poland (University of Science and Technology in Krakow), Italy (Psiquadro in Perugia & INFN in Pisa) and Portugal (Planetarium Calouste Gulbenkian, organised by LIP) had an occasion to converse with CMS researchers and "virtually" visit CMS Control Room and underground facilities.

  17. The Young Child and the Night Sky: Mythology and Astronomy.

    Science.gov (United States)

    Martin, Kathleen

    1995-01-01

    Suggests a way of teaching science to young children that is consistent with Piaget's interpretation of the child's spontaneous animism and that elicits a personal and in-depth response to knowledge. Describes construction and use of an environmental bubble to enhance children's interest in the night sky. (SW)

  18. The impact of shift work and organizational work climate on health outcomes in nurses.

    Science.gov (United States)

    von Treuer, Kathryn; Fuller-Tyszkiewicz, Matthew; Little, Glenn

    2014-10-01

    Shift workers have a higher rate of negative health outcomes than day shift workers. Few studies however, have examined the role of difference in workplace environment between shifts itself on such health measures. This study investigated variation in organizational climate across different types of shift work and health outcomes in nurses. Participants (n = 142) were nursing staff from a metropolitan Melbourne hospital. Demographic items elicited the type of shift worked, while the Work Environment Scale and the General Health Questionnaire measured organizational climate and health respectively. Analysis supported the hypotheses that different organizational climates occurred across different shifts, and that different organizational climate factors predicted poor health outcomes. Shift work alone was not found to predict health outcomes. Specifically, permanent night shift workers had significantly lower coworker cohesion scores compared with rotating day and evening shift workers and significantly higher managerial control scores compared with day shift workers. Further, coworker cohesion and involvement were found to be significant predictors of somatic problems. These findings suggest that differences in organizational climate between shifts accounts for the variation in health outcomes associated with shift work. Therefore, increased workplace cohesion and involvement, and decreased work pressure, may mitigate the negative health outcomes of shift workers.

  19. A Shift of Power

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Administrative reforms are shifting prefecture government powers to the county level in an effort to boost local economies on July 8, the government of China’s southernmost Hainan Province announced that it was to hand over 177 of its administrative powers to county-level governments. The move practically dismantled the powers of the

  20. TIPS (trigger an IIF paradigm shift)

    International Nuclear Information System (INIS)

    Challenge: New Mexico Corporate Services (NMCS) recordable injuries have been averaging 2-4 per year for the last 5 years with no statistical improvement. However, we believe all NM employees must go home incident and injury free every day and just as healthy as they came to work. In addition, we have received feedback from several sources, that indicates some employees are reluctant to report injuries. These indicators showed us that continuing our current strategies, making incremental improvement and changes, would not give us the improvement desired. We needed a paradigm shift to get everyone completely engaged in the IIF (Incident and Injury Free) culture, in order to achieve true IIF results. Methods/Strategies: We formed a small (3-person) taskforce consisting of safety representatives from EHS, Site Services and CS Operations. We reviewed 5 years worth of data to determine what was injuring our people. We also decided to review all injuries, not simply those classified as recordable by OSHA standards. First we identified the types of injury information needed to get a true picture of our safety issues. We analyzed IRB (Incident Review Board) data showing us the following factors and whether any of them contributed to the injury: - Date - Incident Description - Severity - Root Cause - Type of Injury - Season - Work Group/Shift - Area - Improper evaluation of hazard - Inadequate work procedures - Incorrect Mental Model - Inadequate PPE Requirement - Failure to Follow or Unaware of PPE Requirement - Shortcut or Schedule Pressure - Last or First Day of Shift or Adjacent to Holiday - OT - Aggravate Existing Condition - Inadequate Training or Passdown - Experience in Task - Corrective Action Taken - Overall Quality of Response. Once this information was collected for all injuries in an Excel file, we graphed it several ways to help reveal trends: - Shift 7 had double the injuries of shift 5 - Night shift injuries were relatively high but lower than Shift 7 -Shift

  1. An Approach to Objectively Defining and Ranking Dark Night Communities

    Science.gov (United States)

    Culver, Roger B.; Craine, Brian L.; Craine, Eric R.; 5203254505

    2016-06-01

    There has long been an interest in protecting dark skies around astronomical observatory sites, a task that has become more urgent with the rapid growth of communities surrounding many of these locations. “Dark sky communities” have been discussed in the context of stimulating interest in mediating effects of artificial light at night, and efforts have been made in some areas to attempt to legislate less intrusive lights. Arguably, the latter has been largely unsuccessful, and the former represents a very small percentage of the extant dark night areas. In nearly all instances, the trend is for community contributions to the overall light at night output to increase with time. A complementary, if not alternative, approach is to recognize that all communities are “dark night communities” until they are not. This implies, of course, an understanding of quantitative levels of light output and distributions, and some agreement on thresholds beyond which a community ceases to satisfy definition as a Dark Night Community. Three parameters of primary interest in this regard are 1) integrated community brightness as seen from the zenith, 2) zenith angle brightness distribution, and 3) spectral energy distribution. The first we have addressed using Suomi VIIRS satellite data, which we discuss in this presentation. These data can be further parsed by comparing with demographic databases of interest, such as population and area. In this presentation we discuss the metrics involved, a formula for weighting the metrics to generate a comparative score, and the implications of each for the evaluation of energy waste in hundreds of communities that have now been ranked.

  2. Astronomy Meets the Environmental Sciences: Using GLOBE at Night Data

    Science.gov (United States)

    Barringer, D.; Walker, C. E.; Pompea, S. M.; Sparks, R. T.

    2011-09-01

    The GLOBE at Night database now contains over 52,000 observations from the five annual two-week campaigns. It can be used as a resource to explore various issues related to light pollution and our environment. Students can compare data over time to look for changes and trends. For example, they can compare the data to population density or with nighttime photography and spectroscopy of lights. The data can be used in a lighting survey, to search for dark sky oases or to monitor ordinance compliance. Students can study effects of light pollution on animals, plants, human health, safety, security, energy consumption, and cost. As an example, we used data from the GLOBE at Night project and telemetry tracking data of lesser long-nosed bats obtained by the Arizona Game and Fish Department to study the effects of light pollution on the flight paths of the bats between their day roosts and night foraging areas around the city of Tucson, AZ. With the visual limiting magnitude data from GLOBE at Night, we ran a compositional analysis with respect to the bats' flight paths to determine whether the bats were selecting for or against flight through regions of particular night sky brightness levels. We found that the bats selected for the regions in which the limiting sky magnitudes fell between the ranges of 2.8-3.0 to 3.6-3.8 and 4.4-4.6 to 5.0-5.2, suggesting that the lesser long-nosed bat can tolerate a fair degree of urbanization. We also compared this result to contour maps created with digital Sky Quality Meter (http://www.unihedron.com) data.

  3. Insomnia, anxiety, and heart rate variability among nurses working different shift systems in Taiwan.

    Science.gov (United States)

    Shen, Shu-Hua; Yen, Miaofen; Yang, Shou-Lin; Lee, Chiung-Ying

    2016-06-01

    This cross-sectional comparative study investigated the levels of insomnia, anxiety, and heart rate variability of nurses members working different shift systems. One hundred and twenty-four participants were recruited from members of the nurses of two Taiwanese hospitals. Data were collected using the Chinese versions of the Athens Insomnia Scale and Beck Anxiety Scale questionnaires and electrocardiograms recorded immediately upon completion of each participant's work shift. A binary logistic regression model was used for analysis. Insomnia, anxiety, and abnormal parasympathetic activity were more acute in nurses who worked a rotating shift than in those performing day or night shift work. Logistic regression analysis showed that age significantly increased the incidence and level of insomnia. Age, years of service, and nurses' status as a parent significantly intensified incidences of anxiety and abnormal parasympathetic activity. Rotating shift work is one of the main factors causing adverse effects on the physical and psychological health of nurses; therefore, when a shift work system cannot be avoided, a practice of day and night shifts for nurses is preferable to rotating shifts. PMID:26755351

  4. Riesgo de cáncer de mama en trabajadoras de turno nocturno Breast cancer risk in night female workers

    Directory of Open Access Journals (Sweden)

    Francisco Javier Fresneda Moreno

    2013-03-01

    Full Text Available Los estudios epidemiológicos más recientes a nivel mundial han puesto de manifiesto una asociación entre el trabajo nocturno (15-20% de los trabajadores y un aumento del riesgo de cáncer de mama, siendo esta, una patología de gran prevalencia y la primera causa de neoplasia en el sexo femenino. En el año 2007, la IARC consideró el trabajo nocturno como probable cancerígeno (categoría 2A. Los turnos nocturnos producen una disrupción del ritmo circadiano. La exposición a la luz artificial nocturna inhibe la síntesis de melatonina aumentando el estímulo estrogénico, e inhibiendo el efecto antimitótico, antiangiogénico y antioxidante de esta hormona, aumentando así el riesgo tumoral. Los objetivos son: identificar la evidencia científica existente entre la asociación trabajo nocturno y cáncer de mama, los factores intrínsecos/extrínsecos que pueden modificar la asociación causal, conocer desde el punto de vista científico la sostenibilidad de la melatonina en la chrono-disrupción y los factores de vulnerabilidad. Se ha realizado la búsqueda bibliográfica de artículos publicados entre 2006-diciembre 2012 (exceptuando un meta-análisis del 2005, en las siguientes bases datos: Medline, Wok, Lilacs, OSH, IBECS, Cochrane, Scopus y Embase. Se seleccionaron por nivel de evidencia y criterios de inclusión-exclusión un total de 15 artículos. Se sugiere la existencia de una asociación no concluyente entre el riesgo de cáncer de mama y trabajo nocturno, por lo que se deben seguir realizando estudios más precisos en diferentes tipos de profesiones, etnias, minimizando la posibilidad de sesgos.Recent epidemiological studies worldwide have shown an association between night shift (15-20% of workers and an increased risk of breast cancer, this being a highly prevalent disease and the leading cause of neoplasia in women. In 2007, the IARC considered night shift as a probable carcinogen (category 2A. Night shifts produce a circadian

  5. Light-at-night and Cancer%夜光暴露与癌症的流行病学研究进展

    Institute of Scientific and Technical Information of China (English)

    杜佳; 陈玉恒; 代敏; 郑同章; 李倩

    2011-01-01

    WHO国际癌症研究所已确认,倒班能引起人体的生理节奏紊乱,是可能的人类致癌危险因素(2A级).其中,影响倒班工人生理节奏紊乱的夜光暴露是重要的危险因子.对有关夜光暴露和癌症的流行病学研究进行了综述.%The International Agency for Research on Cancer of World Health Organization concluded, that"shift work that in volves circadian disruption is probably carcinogenic to humans,Group2A" Light at night is the important risk factor that affects the circadian rhythm of shift workers. This review was focused on the epidemiological studies on the light at night and cancer.

  6. Breastfeeding experiences of Taiwan nurses on rotational shifts.

    Science.gov (United States)

    Wu, Chao-Hua; Kuo, Su-Chen; Lin, Hung-Ru

    2008-12-01

    The aim of this study was to describe the experiences of ten three-shift nurses, with particular focus on how they make arrangements regarding breastfeeding in relation to their workplaces and work breaks. Using a qualitative approach, data were obtained through semi-structured interviews with ten three-shift nurses who had breastfed for more than six months and who returned to work after childbirth. Snowball sampling was used to recruit participants, each of whom was interviewed for 1.5-2 hours. Content analysis was used to synthesize interview transcripts. The following three predominant themes and nine sub-themes were identified: (1) managing to express milk--finding appropriate times to express milk during day shifts, learning the timing to express milk during night shifts, and expressing all milk from the breasts during early morning 'graveyard' shifts; (2) dealing with the conflict between work and expressing milk--learning to both take care of patients and express milk, coming back to work on time after expressing milk, and finding "good" places to express milk; and (3) viewing breastfeeding as part of life--being with the baby at home more than being out, turning cars into mobile breastfeeding and milk-expressing "rooms", and breastfeeding as an accomplishment. These findings can help nurses and other healthcare professionals provide anticipatory guidance to women who plan to continue to breastfeed after returning to work. Study results can provide a reference for shift workers who continue to breastfeed after they return to work. PMID:19061176

  7. Improving shift workers' health and tolerance to shiftwork: recent advances.

    Science.gov (United States)

    Kogi, K

    1996-02-01

    Recent developments in research in relation to health and tolerance to shiftwork offer useful guidance for improving conditions of shiftwork. These developments were discussed by the papers of this special issue, presented at the Mini-symposium on improving shift workers' health and tolerance to shiftwork in the 24th International Congress on Occupational Health in Nice, France, in 1993. While there is evidence that shiftwork is regarded as a risk factor with respect to the health of shift workers, many shift workers are engaged in shift systems for years while coping with associated burdens in their working life. In order to improve shift workers' health and tolerance, recent research points to the importance of multifaceted measures addressing both the effects of disruptions in circadian rhythms, and the actual interferences with daily routines at work and in family and social life. Increasing attention is paid to changed working hours and shift systems, including more flexible shiftwork systems, as well as to supporting effective coping activities and occupational health services. As shown by the new ILO Convention on night work, a consensus is being built internationally that multifaceted actions are necessary for improving shiftworking conditions and that such actions should be based on participatory planning and implementation.

  8. Shift work disorder in nurses--assessment, prevalence and related health problems.

    Directory of Open Access Journals (Sweden)

    Elisabeth Flo

    Full Text Available BACKGROUND: This study investigates the prevalence of symptoms of shift work disorder in a sample of nurses, and its association to individual, health and work variables. METHODOLOGY/PRINCIPAL FINDINGS: We investigated three different shift work disorder assessment procedures all based on current diagnostic criteria and employing symptom based questions. Crude and adjusted logistic regression analyses were performed with symptoms of shift work disorder as the dependent variable. Participants (n = 1968 reported age, gender, work schedule, commuting time, weekly work hours, children in household, number of nights and number of shifts separated by less than 11 hours worked the last year, use of bright light therapy, melatonin and sleep medication, and completed the Bergen Insomnia Scale, Epworth Sleepiness Scale, Global Sleep Assessment Questionnaire, Diurnal Scale, Revised Circadian Type Inventory, Dispositional Resilience (Hardiness Scale--Revised, Fatigue Questionnaire, questions about alcohol and caffeine consumption, as well as the Hospital Anxiety and Depression Scale. CONCLUSIONS/SIGNIFICANCE: Prevalence rates of symptoms of shift work disorder varied from 32.4-37.6% depending on the assessment method and from 4.8-44.3% depending on the work schedule. Associations were found between symptoms of shift work disorder and age, gender, circadian type, night work, number of shifts separated by less than 11 hours and number of nights worked the last year, insomnia and anxiety. The different assessment procedures yielded similar results (prevalence and logistic regression analyses. The prevalence of symptoms indicative of shift work disorder was high. We argue that three symptom-based questions used in the present study adequately assess shift work disorder in epidemiological studies.

  9. Circadian mechanisms in the regulation of melatonin synthesis: disruption with light at night and the pathophysiological consequences

    Directory of Open Access Journals (Sweden)

    Ahmet Korkmaz

    2011-02-01

    Full Text Available In the past two decades, the results of a number of epidemiological studies have uncovered an association between excessive light exposure at night and the prevalence of cancer. Whereas the evidence supporting this link is strongest between nighttime light and female breast and male prostate cancer, the frequency of other tumor types may also be elevated. Individuals who have the highest reported increase in cancer are chronic night shift workers and flight attendants who routinely fly across numerous time zones. There are at least two obvious physiological consequences of nighttime light exposure, i.e., a reduction in circulating melatonin levels and disruption of the circadian system (chronodisruption. Both these perturbations in experimental animals aggravate tumor growth. Melatonin has a long investigative history in terms of its ability to stymie the growth of many tumor types. Likewise, in the last decade chronodisruption has been unequivocally linked to a variety of abnormal metabolic conditions including excessive tumor growth. This brief review summarizes the processes by which light after darkness onset impedes melatonin production and disturbs circadian rhythms. The survey also reviews the evidence associating the ostensible danger of excessive nighttime light pollution to cancer risk. If an elevated tumor frequency is definitively proven to be a consequence of light at night and/or chronodisruption, it seems likely that cancer will not be the exclusive pathophysiological change associated with the rampant light pollution characteristic of modern societies. [J Exp Integr Med 2011; 1(1: 13-22

  10. Circadian Phase-Shifting Effects of Bright Light, Exercise, and Bright Light + Exercise

    OpenAIRE

    Youngstedt, Shawn D.; Kline, Christopher E.; Elliott, Jeffrey A; Zielinski, Mark; Devlin, Tina M.; Moore, Teresa A.

    2016-01-01

    Limited research has compared the circadian phase-shifting effects of bright light and exercise and additive effects of these stimuli. The aim of this study was to compare the phase-delaying effects of late night bright light, late night exercise, and late evening bright light followed by early morning exercise. In a within-subjects, counterbalanced design, 6 young adults completed each of three 2.5-day protocols. Participants followed a 3-h ultra-short sleep-wake cycle, involving wakefulness...

  11. Shifts that divide population

    Science.gov (United States)

    Muneepeerakul, Rachata; Qubbaj, Murad; Aggarwal, Rimjhim; Anderies, John M.; Janssen, Marco

    2014-05-01

    How does a population of organisms in an ecosystem or of people in a society respond to rapid shifts in the environment? Answers to this question are critical to our ability to anticipate and cope with a changing ecohydrological system. We have developed a generic model of adaptation mechanisms, based on replicator dynamics, in which we derive a simple and insightful threshold condition that separates two important types of responses: 'cohesive transition' in which the whole population changes gradually together, and 'population-dividing transition' in which the population splits into two groups with one eventually dominating the other. The threshold depends on the magnitude of the shift and the shape of the fitness landscape. Division in populations can fundamentally alter the functioning of and induce subsequent feedbacks within the system; knowing the condition that gives rise to such division is thus fundamentally important.

  12. Shift work--problems and its impact on female nurses in Udaipur, Rajasthan India.

    Science.gov (United States)

    Rathore, H; Shukla, K; Singh, S; Tiwari, G

    2012-01-01

    Abstract : There is good evidence that shift work has negative effects on workers health, safety and performance. It is quite appropriate that attention is paid to this very important feature of socio-technical systems, which may adversely affect mental and physical health, social life and safety of shift workers. Research into the impact of shift work on professionals has consistently identified a range of negative outcomes in physical, psychological, and social domains (Akerstedt, 1988; Costa, Lievore, Casaletti, Gaffuri, & Folkard, 1989; Kogi, 2005; Paley & Tepas, 1994). Hospitals, the biggest employer in the health care field, employ more night shift workers than any other industry. It can therefore be inferred that in medical domain high percentage of workforce may be affected by problems related to shift work. Thus the present study will provide knowledge base for the problems faced by the female nurses. The present study was undertaken with an objective of getting an insight into the problems faced by female nurses in shift work. . It was found that the female nurses in India worked on roaster pattern of change in shift every seven days. They did not have a say in the change of duties, it could only be done on mutual grounds. Partners of younger group did not much adjust to their shift pattern this created stress among the nurses.The results showed that the female nurses in both the age groups i.e. 30-45 years and 45-60 years faced many problems related to health and well being, fatigue, social and domestic situations. They could not give much time to their children in particular. Travelling in nights was risky for them. Common problem was the insufficient sleep during night shifts. The nurses had to cater to the needs of the family, children in particular along with the adjustments to be made due to shift work. They had to sometimes do the night duties and attend social functions as a part of their duty. Children and husband in some cases did not cooperate

  13. Making Space Cool - Successful Outreach at Yuri's Night Stuttgart

    Science.gov (United States)

    Hill, Christine; Bretschneider, Jens; Nathanson, Emil; Grossmann, Agnes

    Yuri’s Night - also known as the “World Space Party” - is the annual celebration commemorating Gagarin’s historic flight on April 12, 1961, and the maiden voyage of the American space shuttle on April 12, 1981. It was created by young space enthusiasts in 2000 at the annual Space Generation Congress and was first celebrated in 2001, registering more than 60 events around the world from the start. Since then the interest in celebrating human spaceflight grew constantly to over 350 events across all seven continents in 2013. The honoring of Yuri Gagarin’s first spaceflight in Stuttgart started in 2007 and resulted in one of the largest events outside the US, with five parties following in 2008, 2009, 2010, 2012 and 2013. The Stuttgart event was originally organized as space party for an audience at the age of 20 and beyond including informative aspects at the afternoon and a following party far into the night. Since 2010 the focus of the Yuri’s Night Stuttgart is to bring awareness of space exploration to people of all ages, including particularly many participatory hands-on space activities for kids and families that attract hundreds of visitors every year. As much as Yuri’s Night is a worldwide party, the events in Stuttgart successfully concentrate on educational aspects that help to inspire new generations of space enthusiasts who will ultimately shape the future of space exploration. It is therefore not only a look back to one of the greatest achievements of the 20th Century, but it is also a look into the future: from multinational cooperation on the International Space Station to benefit of space flight to the introduction of the next generation of space technology. This paper will introduce the celebrations of Yuri’s Night in Stuttgart of the past four years and compare them to the early events. It provides a summary of the development of the Yuri’s Night including educational aspects, public relations and media attraction and gives

  14. Determining Light Pollution of the Global Sky: GLOBE at Night

    Science.gov (United States)

    Henderson, S.; Meymaris, K.; Ward, D.; Walker, C.; Russell, R.; Pompea, S.; Salisbury, D.

    2006-05-01

    GLOBE at Night is an international science event designed to observe and record the visible stars as a means of measuring light pollution in a given location. Increased and robust understanding of our environment requires learning opportunities that take place outside of the conventional K-12 classroom and beyond the confines of the school day. This hands-on learning activity extended the traditional classroom and school day last March with a week of nighttime sky observations involving teachers, students and their families. The quality of the night sky for stellar observations is impacted by several factors including human activities. By observing cloud cover and locating specific constellations in the sky, students from around the world learned how the lights in their community contribute to light pollution, exploring the relationship between science, technology and their society. Students learned that light pollution impacts more than just the visibility of stars at night. Lights at night impact both the biology and ecology of many species in our environment. Students were able to participate in this global scientific campaign by submitting their observations through an online database, allowing for authentic worldwide research and analysis by participating scientists. Students and their families learned how latitude and longitude coordinates provide a location system to map and analyze the observation data submitted from around the globe. The collected data is available online for use by students, teachers and scientists worldwide to assess how the quality of the night sky varies around the world. This session will share how students and scientists across the globe can explore and analyze the results of this exciting campaign. GLOBE at Night is a collaborative effort sponsored by The GLOBE Program, the National Optical Astronomy Observatory (NOAO), Centro de Apoyo a la Didactica de la Astronomia (CADIAS), Windows to the Universe, and ESRI. The GLOBE Program is

  15. Prospective study of first night effect on 2-night pdolysomnographic parameters in adult Chinese snorers with suspected obstructive sleep apnea hypopnea syndrome

    Institute of Scientific and Technical Information of China (English)

    MA Jing; ZHANG Cheng; ZHANG Jue; HU Jie; FANG Jing; ZHANG Jie; JIA Peng; WANG Guang-fa

    2011-01-01

    Background A prospective 2-night polysomnographic (PSG) study in Chinese snorers was designed to assess the role of the first night effect (FNE) in PSG parameters and the diagnosis of obstructive sleep apnea hypopnea syndrome (OSAHS).Methods Seventy-two snorers from two teaching hospitals underwent overnight PSG on two consecutive nights.The night-to-night variability of PSG parameters were recorded and analyzed.Results Sixty-six patients were analyzed.Among all the PSG parameters,only the total time of stage 2 presented a significant difference between two nights:219.50 (83.50-353.50) vs.215.25 (59.50-342.50) (P=0.000).Subgroup assessment showed a slight night-to-night difference in about 1-2 parameters in the group with the apnea-hypopnea index (AHI) ≥20 events per hour as well as the group with AHI <20 events per hour,but there was no night-to-night difference in the AHI in each group.And slighter FNE was found among patients ≥40 years old.There was no significant difference in diagnosis of OSAHS.In the decision of severity,a slight difference was found between the two nights with a Kappa value=0.531.Conclusions Only mild FNE can be found on two consecutive nights of PSG in adult Chinese snorers,but it has no effect on the diagnosis of OSAHS.A single polysomnographic night may be adequate for the diagnosis of OSAHS.

  16. Is Ambient Light during the High Arctic Polar Night Sufficient to Act as a Visual Cue for Zooplankton?

    Directory of Open Access Journals (Sweden)

    Jonathan H Cohen

    Full Text Available The light regime is an ecologically important factor in pelagic habitats, influencing a range of biological processes. However, the availability and importance of light to these processes in high Arctic zooplankton communities during periods of 'complete' darkness (polar night are poorly studied. Here we characterized the ambient light regime throughout the diel cycle during the high Arctic polar night, and ask whether visual systems of Arctic zooplankton can detect the low levels of irradiance available at this time. To this end, light measurements with a purpose-built irradiance sensor and coupled all-sky digital photographs were used to characterize diel skylight irradiance patterns over 24 hours at 79°N in January 2014 and 2015. Subsequent skylight spectral irradiance and in-water optical property measurements were used to model the underwater light field as a function of depth, which was then weighted by the electrophysiologically determined visual spectral sensitivity of a dominant high Arctic zooplankter, Thysanoessa inermis. Irradiance in air ranged between 1-1.5 x 10-5 μmol photons m-2 s-1 (400-700 nm in clear weather conditions at noon and with the moon below the horizon, hence values reflect only solar illumination. Radiative transfer modelling generated underwater light fields with peak transmission at blue-green wavelengths, with a 465 nm transmission maximum in shallow water shifting to 485 nm with depth. To the eye of a zooplankter, light from the surface to 75 m exhibits a maximum at 485 nm, with longer wavelengths (>600 nm being of little visual significance. Our data are the first quantitative characterisation, including absolute intensities, spectral composition and photoperiod of biologically relevant solar ambient light in the high Arctic during the polar night, and indicate that some species of Arctic zooplankton are able to detect and utilize ambient light down to 20-30m depth during the Arctic polar night.

  17. Psychosocial aspects of work and health in the North Sea oil and gas industry. Pt. 3: Sleep, mood, and performance in relation to offshore shift rotation schedules. Pt. 4: The offshore environment in the mid-1990s: a survey of psychosocial factors

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-31

    This report describes a study of offshore shift rotation patterns, the aim of which was to compare fixed-shift and rollover schedules in terms of sleep, mood, and cognitive performance. Two rollover patterns, night followed by days (7N + 7D) and days followed by nights (7D + 7N), and one fixed-shift pattern in which day and night shifts were worked on alternate tours (14D + 14N), were studied. Data were collected on four North Sea oil and gas platforms. For analysis purposes, the two-week work cycle was divided into three test phases, each covering three consecutive shifts. Prior to the first two phases, ``practice`` shifts (during which data were collected but not analysed) were scheduled, and phases were separated by one or two ``rest`` shifts (during which no data were collected). Assessments were carried out at the start, middle, and end of each test shift. (author)

  18. Night blindness in a teenager with cystic fibrosis.

    LENUS (Irish Health Repository)

    Roddy, Marie Frances

    2011-12-01

    This article describes the case of a 16-year-old boy with cystic fibrosis who presented with difficulty seeing in the dark. He had a history of bowel surgery at birth, and he developed cystic fibrosis liver disease and osteopenia during his teenage years. He always had good lung function. When his serum vitamin A level was checked, it was undetectable in sample. He was diagnosed with night blindness and commenced on high-dose vitamin A. His symptoms resolved within 3 days. However, it took over 1 year for his vitamin A level to return to normal. This case emphasizes the importance of monitoring vitamin levels in cystic fibrosis to detect deficiency and prevent long-term consequences, and it highlights the challenges encountered during the course of night blindness treatment.

  19. Night Sky Quality Measurements at the ATA50 Telescope

    Science.gov (United States)

    Er, Hüseyin; Nasiroglu, Ilham; Guney, Yavuz

    2016-07-01

    One of the most important factor affecting the quality of the sky in astronomy is the light pollution (luminance of the night sky). Light pollution, also affects humans and wildlife in many ways. This effect occurs by using the light source of outdoor lighting in the wrong way. Light pollution can be reduced by lighting only what is actually needed, when and where it is needed. In generally, SQM (Sky Quality Meter- Clear Sky Detector) is used to measure this light effect. In this work we present night sky brightness measurements performed at the Atatürk University Astrophysics Research Telescope (ATA50) and the surrounding area, Erzurum, TURKEY. We also discussed the physical impacts of light pollution on science, humans and wildlife.

  20. Impact of Climate Warming on Passive Night Cooling Potential

    DEFF Research Database (Denmark)

    Artmann, Nikolai; Gyalistras, D.; Manz, H.;

    2008-01-01

    of climate warming on the night-time ventilative cooling potential in Europe, eight representative locations across a latitudinal transect were considered. Based on a degree-hours method, site-specific regression models were developed to predict the climatic cooling potential (CCP) from minimum daily air......Night-time ventilation is often seen as a promising passive cooling concept. However, as it requires a sufficiently high temperature difference between ambient air and the building structure, this technique is highly sensitive to changes in climatic conditions. In order to quantify the impact...... temperature (Tmin). CCP was computed for present conditions (1961-90) using measured Tmin data from the European Climate Assessment (ECA) database. Possible time-dependent changes in CCP were assessed for 1990-2100, with particular emphasis on the Intergovernmental Panel on Climate Change (IPCC) 'A2' and 'B2...

  1. Difference in initial dental biofilm accumulation between night and day

    DEFF Research Database (Denmark)

    Dige, Irene; Schlafer, Sebastian; Nyvad, Bente

    2012-01-01

    Objective. The study of initial microbial colonization on dental surfaces is a field of intensive research because of the aetiological role of biofilms in oral diseases. Most previous studies of de novo accumulation and composition of dental biofilms in vivo do not differentiate between biofilms...... in the availability of salivary nutrients. This finding is of significant importance when studying population dynamics during experimental dental biofilm formation....... formed during day and night. We hypothesised that there is a diurnal variation in the rate of accumulation of bacteria on solid surfaces in the oral cavity. Material and methods. In situ biofilm from healthy individuals was collected for 12 h during day and night, respectively, subjected to fluorescent...

  2. Who pre-drinks before a night out and why?

    DEFF Research Database (Denmark)

    Østergaard, Jeanette; Andrade, Stefan Bastholm

    2014-01-01

    Aim: To examine young people’s main motive for pre-drinking in the United Kingdom, how much they drink on an event-specific night out, and whether motives or socioeconomic status (particularly their income level) explain the alcohol quantities they drink. Methods: Multilevel logit and Poisson...... also pre-drank larger quantities either because they wanted to get out of control or because they wanted to be social. Conclusions: Prevention strategies likely to be effective in reducing the alcohol quantities that young people pre-drink should take into account both socioeconomic status and motives...... models were used on a survey of 628 people (aged 18–35) conducted on-site in 26 bars, clubs and pubs in four cities and towns. Results: Young males drink on average 9.8 and females 7.4 standard units of alcohol before a night out. Saving money is the most prevalent motive for pre-drinking. Although lower...

  3. Bioluminescence in the high Arctic during the polar night.

    Science.gov (United States)

    Berge, J; Båtnes, A S; Johnsen, G; Blackwell, S M; Moline, M A

    2012-01-01

    This study examines the composition and activity of the planktonic community during the polar night in the high Arctic Kongsfjord, Svalbard. Our results are the first published evidence of bioluminescence among zooplankton during the Arctic polar night. The observations were collected by a bathyphotometer detecting bioluminescence, integrated into an autonomous underwater vehicle, to determine the concentration and intensity of bioluminescent flashes as a function of time of day and depth. To further understand community dynamics and composition, plankton nets were used to collect organisms passing through the bathyphotometer along with traditional vertical net tows. Additionally, using a moored bathyphotometer closed to the sampling site, the bioluminescence potential itself was shown not to have a diurnal or circadian rhythm. Rather, our results provide evidence for a diel vertical migration of bioluminescent zooplankton that does not correspond to any externally detectable changes in illumination.

  4. Family Science Night: Changing Perceptions One Family at a Time

    Science.gov (United States)

    Pesnell, W. D.; Drobnes, E.; Mitchell, S.; Colina-Trujillo, M.

    2007-01-01

    If students are not encouraged to succeed in science, mathematics, and technology classes at school, efforts to improve the quality of content and teaching in these subjects may be futile. Parents and families are in a unique position to encourage children to enroll and achieve in these classes. The NASA Goddard Space Flight Center Family Science Night program invites middle school students and their families to explore the importance of science and technology in our daily lives by providing a venue for families to comfortably engage in learning activities that change their perception and understanding of science - making it more practical and approachable for participants of all ages. Family Science Night strives to change the way that students and their families participate in science, within the program and beyond.

  5. Is there a dissociative process in sleepwalking and night terrors?

    OpenAIRE

    Hartman, D.; Crisp, A; Sedgwick, P; Borrow, S

    2001-01-01

    The enduring and contentious hypothesis that sleepwalking and night terrors are symptomatic of a protective dissociative mechanism is examined. This is mobilised when intolerable impulses, feelings and memories escape, within sleep, the diminished control of mental defence mechanisms. They then erupt but in a limited motoric or affective form with restricted awareness and subsequent amnesia for the event. It has also been suggested that such processes are more likely when the patient has a hi...

  6. Analytical description of the Day-Night neutrino asymmetry

    CERN Document Server

    Supanitsky, A D; Medina-Tanco, G A

    2007-01-01

    We present a new treatment of the Earth matter effects on the neutrino oscillations that is valid for an arbitrary density profile. When applied to the the study of the day-night effect on the solar neutrino flux it renders us a simple analytical expression, which is more accurate than those derived by using the perturbation theory and can be extended to higher energies.

  7. Cuff inflations do not affect night-time blood pressure

    DEFF Research Database (Denmark)

    Petersen, Emilie H; Theilade, Simone; Hansen, Tine W;

    2015-01-01

    Discomfort related to cuff inflation may bias 24 h ambulatory blood pressure (BP) measurements, especially during night-time. We accessed the impact of cuff inflations by comparing 24 h BP recorded with a cuff-less tonometric wrist device and an upper-arm oscillometric cuff device. Fifty...... of Hypertension International Protocol revision 2010 is recommended before applying it in daily clinical practice....

  8. Optimal management of night eating syndrome: challenges and solutions

    OpenAIRE

    Kucukgoncu S; Midura M; Tek C

    2015-01-01

    Suat Kucukgoncu, Margaretta Midura, Cenk Tek Department of Psychiatry, Yale University, New Haven, CT, USA Abstract: Night Eating Syndrome (NES) is a unique disorder characterized by a delayed pattern of food intake in which recurrent episodes of nocturnal eating and/or excessive food consumption occur after the evening meal. NES is a clinically important disorder due to its relationship to obesity, its association with other psychiatric disorders, and problems concerning sleep. However, NE...

  9. Activities in the ATLAS Experiment during European Researchers Night 2010.

    CERN Document Server

    Claudia Marcelloni

    2010-01-01

    On 24 September 2010 from 5 p.m. to 1 a.m., European Researchers Night will give some 100 young students from local schools the opportunity to sit side by side with scientists and operators in the LHC control rooms. At the same time, a live webcast will connect CERN with various institutes around Europe participating in the Being a European Scientist Today (BEST) project.

  10. Registration of heat capacity mapping mission day and night images

    Science.gov (United States)

    Watson, K.; Hummer-Miller, S.; Sawatzky, D. L.

    1982-01-01

    Registration of thermal images is complicated by distinctive differences in the appearance of day and night features needed as control in the registration process. These changes are unlike those that occur between Landsat scenes and pose unique constraints. Experimentation with several potentially promising techniques has led to selection of a fairly simple scheme for registration of data from the experimental thermal satellite HCMM using an affine transformation. Two registration examples are provided.

  11. Screening of Particle Fever film and Comedy Night

    CERN Multimedia

    Brice, Maximilien

    2014-01-01

    This documentary brings to life the start-up of the world’s most powerful particle accelerator, the LHC, and the two-year-long global effort that led to the discovery of the Higgs boson. The screening will be followed by a discussion with director Mark Levinson, editor Walter Munch and the scientists featured in the documentary. The second part of the evening will see scientists take to the stage as comedians for the Comedy Night.

  12. Day and night warming have different effect on root lifespan

    OpenAIRE

    W. M. Bai; J. Y. Xia; S. Q. Wan; Zhang, W.H.; Li, L. H.

    2012-01-01

    Roots are key components of C cycling in terrestrial ecosystems and play an important role in the regulation of response of terrestrial ecosystems to global climate warming, which is predicted to occur with greater warming magnitudes at night than during daytime across different regions on the Earth. However, there has been no detailed study to investigate the effect of asymmetrical warming on root dynamics at the level of terrestrial ecosystems. To understand the effects of...

  13. Night-sky brightness and extinction at Mt. Shatdzhatmaz

    CERN Document Server

    Kornilov, V; Voziakova, O; Shatsky, N; Safonov, B; Gorbunov, I; Potanin, S; Cheryasov, D; Senik, V

    2016-01-01

    The photometric sky quality of Mt. Shatdzhatmaz, the site of Sternberg Astronomical Institute Caucasian Observatory 2.5 m telescope, is characterized here by the statistics of the night-time sky brightness and extinction. The data were obtained as a by-product of atmospheric optical turbulence measurements with the MASS (Multi-Aperture Scintillation Sensor) device conducted in 2007--2013. The factors biasing night-sky brightness measurements are considered and a technique to reduce their impact on the statistics is proposed. The single-band photometric estimations provided by MASS are easy to transform to the standard photometric bands. The median moonless night-sky brightness is 22.1, 21.1, 20.3, and 19.0 mag per square arcsec for the $B$, $V$, $R$, and $I$ spectral bands, respectively. The median extinction coefficients for the same photometric bands are 0.28, 0.17, 0.13, and 0.09 mag. The best atmospheric transparency is observed in winter.

  14. Optimal management of night eating syndrome: challenges and solutions

    Directory of Open Access Journals (Sweden)

    Kucukgoncu S

    2015-03-01

    Full Text Available Suat Kucukgoncu, Margaretta Midura, Cenk Tek Department of Psychiatry, Yale University, New Haven, CT, USA Abstract: Night Eating Syndrome (NES is a unique disorder characterized by a delayed pattern of food intake in which recurrent episodes of nocturnal eating and/or excessive food consumption occur after the evening meal. NES is a clinically important disorder due to its relationship to obesity, its association with other psychiatric disorders, and problems concerning sleep. However, NES often goes unrecognized by both health professionals and patients. The lack of knowledge regarding NES in clinical settings may lead to inadequate diagnoses and inappropriate treatment approaches. Therefore, the proper diagnosis of NES is the most important issue when identifying NES and providing treatment for this disorder. Clinical assessment tools such as the Night Eating Questionnaire may help health professionals working with populations vulnerable to NES. Although NES treatment studies are still in their infancy, antidepressant treatments and psychological therapies can be used for optimal management of patients with NES. Other treatment options such as melatonergic medications, light therapy, and the anticonvulsant topiramate also hold promise as future treatment options. The purpose of this review is to provide a summary of NES, including its diagnosis, comorbidities, and treatment approaches. Possible challenges addressing patients with NES and management options are also discussed. Keywords: night eating, obesity, psychiatric disorders, weight, depression

  15. Modern night vision goggles for advanced infantry applications

    Science.gov (United States)

    Estrera, Joseph P.; Ostromek, Timothy E.; Isbell, Wayne; Bacarella, Antonio V.

    2003-09-01

    Northrop Grumman Electro-Optical Systems (NGEOS) has concentrated in recent years on the development of advanced night vision goggle (NVG) systems. These NVGs developments concentrate on past operational deficiencies such as high light/bright source conditions during military operations in urban terrain (MOUT), poor individual movement technique (IMT) infantry operations, and obscured battlefield and reduced weather conditions. The first area of NVG advancement involves direct image intensifier (I2) replacement involving automatic gated power supply technology for wide dynamic NVG operation and advanced Generation III halo free I2 technology for reduction of NVG image halo and "blooming" artifacts. The second significant development area is NVG individual movement technique (IMT) deficiencies such as reduced field of view, reduced depth perception, center of gravity problems, and limited operation flexibility. These issues of NVG IMT have resulted in the development of an IMT enhanced night vision goggle for the U.S. Army's enhanced night vision goggle (ENVG). Finally, Northrop Grumman EOS is developing a NVG with the capability of producing optimized real-time image fusion from an image intensified sensor and uncooled long wavelength infrared (LWIR) sensor. This new technology allows for optimum imaging in battlefield obscured and laser polluted environment. These image fusion NVG development efforts have concentrated on both optical overlay image fusion and digital image fusion. This paper will compare and contrast these two types of image fusion technologies.

  16. Starry Nights: The Great World Wide Star Count

    Science.gov (United States)

    Ward, Dennis; Meymaris, K.; Henderson, S.; Johnson, R.

    2008-05-01

    The Great World Wide Star Count is an international field campaign encouraging participants to go outside, look skyward after dark, count the stars they see in certain constellations, and report what they see online. This Windows to the Universe citizen science event is designed to raise awareness about light pollution and the night sky as well as promote learning in astronomy. Star Count benefits from the current excitement in citizen science. The 2007 pilot effort included 15 nights for observations in October & November. Utilizing the international networking capabilities of Windows to the Universe, Star Count is able to engage people from all countries. Data collection and online reporting is designed to be simple and user-friendly for citizen scientists of all ages. The collected data is available online in a variety of formats for use by students, teachers and scientists worldwide to assess how the quality of the night sky varies around the world. This session will share our results and demonstrate how students and scientists worldwide can explore and analyze the data from the of the 2007 campaign. We will discuss how the Star Count team planned and executed the project in such a way that non-astronomers were able to make valid and useful contributions. We will also discuss lessons learned and best practices based on this inaugural campaign, as well as our plans for the future, including IYA 2009.

  17. Treatment of Infantile Morbid Night Crying by Acupuncture at Zhongchong Point in 100 Cases

    Institute of Scientific and Technical Information of China (English)

    赵坚新

    2002-01-01

    @@ Morbid night crying is often found in infants. Applying acupuncture at Zhongchong (PC 9) point, the author treated 100 infants with morbid night crying and achieved satisfactory therapeutic effects. The results are reported as follows.

  18. Catastrophic shifts in ecosystems

    Science.gov (United States)

    Scheffer, Marten; Carpenter, Steve; Foley, Jonathan A.; Folke, Carl; Walker, Brian

    2001-10-01

    All ecosystems are exposed to gradual changes in climate, nutrient loading, habitat fragmentation or biotic exploitation. Nature is usually assumed to respond to gradual change in a smooth way. However, studies on lakes, coral reefs, oceans, forests and arid lands have shown that smooth change can be interrupted by sudden drastic switches to a contrasting state. Although diverse events can trigger such shifts, recent studies show that a loss of resilience usually paves the way for a switch to an alternative state. This suggests that strategies for sustainable management of such ecosystems should focus on maintaining resilience.

  19. Shifted genus expanded W ∞ algebra and shifted Hurwitz numbers

    Science.gov (United States)

    Zheng, Quan

    2016-05-01

    We construct the shifted genus expanded W ∞ algebra, which is isomorphic to the central subalgebra A ∞ of infinite symmetric group algebra and to the shifted Schur symmetrical function algebra Λ* defined by Okounkov and Olshanskii. As an application, we get some differential equations for the generating functions of the shifted Hurwitz numbers; thus, we can express the generating functions in terms of the shifted genus expanded cut-and-join operators.

  20. GLOBE at Night: a Worldwide Citizen-Science Program to Increase Awareness of Light Pollution by Measuring Night Sky Brightness

    Science.gov (United States)

    Walker, C. E.; Pompea, S. M.

    2011-12-01

    The emphasis in the international citizen-science, star-hunting campaign, GLOBE at Night, is in bringing awareness to the public on issues of light pollution. Light pollution threatens not only observatory sites and our "right to starlight", but can affect energy consumption, wildlife and health. GLOBE at Night has successfully reached a few 100,000 citizen-scientists. What has contributed to its success? Foundational resources are available to facilitate the public's participation in promoting dark skies awareness. The GLOBE at Night website explains clearly the simple-to-participate-in 5 step program and offers background information and interactive games on key concepts. To promote the campaign via popular social media, GLOBE at Night created Facebook and Twitter pages. The program has been expanded to include trainings of the general public, but especially educators in schools, museums and science centers, in unique ways. Education kits for dark skies awareness have been distributed at the training workshops. The kit includes material for a light shielding demonstration, a digital Sky Quality Meter and "Dark Skies Rangers" activities. The activities are on how unshielded light wastes energy, how light pollution affects wildlife and how one can participate in a citizen-science star-hunt like GLOBE at Night. To increase participation in the 2011 campaign, children and adults submitted their sky brightness measurements in real time with smart phones or tablets using the web application at www.globeatnight.org/webapp/. With smart phones and tablets, the location, date and time register automatically. For those without smart mobile devices, user-friendly tools on the GLOBE at Night report page were reconfigured to determine latitude and longitude more easily and accurately. As a proto-type for taking multiple measurements, people in Tucson found it easy to adopt a street and take measurements every mile for the length of the street. The grid of measurements

  1. Shift rostering using decomposition: assign weekend shifts first

    NARCIS (Netherlands)

    Veen, van der Egbert; Hans, Erwin W.; Post, Gerhard F.; Veltman, Bart

    2015-01-01

    This paper introduces a shift rostering problem that surprisingly has not been studied in the literature: the weekend shift rostering problem. It is motivated by our experience that employees’ shift preferences predominantly focus on the weekends, since many social activities happen during weekends.

  2. Losing Sleep to Watch the Night-Sky: The Relationship between Sleep-Length and Noctcaelador

    Science.gov (United States)

    Kelly, William E.; Rose, Callie

    2005-01-01

    For most of history, humans have been watching the night-sky (Hawkins, 1983). Historically, individuals have watched the night-sky for aesthetic appreciation and to gain insights and knowledge (Brecher & Feirtag, 1979). Despite the long history of night-sky watching among humans and the apparent importance of the behavior to large groups of…

  3. Dose-dependent responses of avian daily rhythms to artificial light at night

    NARCIS (Netherlands)

    de Jong, Maaike; Jeninga, Lizanne; Ouyang, Jenny Q; van Oers, Kees; Spoelstra, Kamiel; Visser, Marcel E

    2015-01-01

    Recent studies have shown that animals are affected by night-time light exposure. Light is a continuous variable, but our knowledge on how individuals react to different light intensities during the night is limited. We therefore determined the relationship between night light intensity and the beha

  4. Adults' Perceptions of Children's Science Abilities and Interest after Participating in a Family Science Night

    Science.gov (United States)

    Yanowitz, Karen L.; Hahs-Vaughn, Debbie L.

    2016-01-01

    The goal of this research was to examine adults' and children's perceptions of participating in a family science night event, especially in the context of parental belief about children's science abilities. Family science nights are becoming increasingly popular and are used in a wide range of settings. During family science nights, adults and…

  5. A new method to determine the energy saving night temperature for vegetative growth of Phalaenopsis

    NARCIS (Netherlands)

    Pollet, B.; Kromwijk, J.A.M.; Vanhaecke, L.; Dambre, P.; Labeke, M.C.; Marcelis, L.F.M.; Steppe, K.

    2011-01-01

    Knowledge of the energy saving night temperature (i.e. a relatively cool night temperature without affecting photosynthetic activity and physiology) and a better understanding of low night temperature effects on the photosynthetic physiology of Phalaenopsis would improve their production in terms of

  6. Treatment of 20 Infants with Night Crying by Tuina and Auricular Application

    Institute of Scientific and Technical Information of China (English)

    肖莲英

    2010-01-01

    Night crying is a condition that infants under one year old often cry at night, or at regular times, sometimes throughout the entire night, but acting normal during daytime. We treated 20 cases by tuina and auricular application. It is reported as follows.

  7. Repetition and Translation Shifts

    Directory of Open Access Journals (Sweden)

    Simon Zupan

    2006-06-01

    Full Text Available Repetition manifests itself in different ways and at different levels of the text. The first basic type of repetition involves complete recurrences; in which a particular textual feature repeats in its entirety. The second type involves partial recurrences; in which the second repetition of the same textual feature includes certain modifications to the first occurrence. In the article; repetitive patterns in Edgar Allan Poe’s short story “The Fall of the House of Usher” and its Slovene translation; “Konec Usherjeve hiše”; are compared. The author examines different kinds of repetitive patterns. Repetitions are compared at both the micro- and macrostructural levels. As detailed analyses have shown; considerable microstructural translation shifts occur in certain types of repetitive patterns. Since these are not only occasional; sporadic phenomena; but are of a relatively high frequency; they reduce the translated text’s potential for achieving some of the gothic effects. The macrostructural textual property particularly affected by these shifts is the narrator’s experience as described by the narrative; which suffers a reduction in intensity.

  8. Fatigue Minimization Work Shift Scheduling for Air Traffic Controllers

    Directory of Open Access Journals (Sweden)

    Ta-Chung Wang

    2013-05-01

    Full Text Available It is common for Air Traffic Controllers to control air traffic during the night and to experience fatigue. Although fatigue is not the direct cause of aviation accidents, 21 percent of accidents are fatigue-related. Therefore countries and companies have tried to regulate work hours to avoid extreme fatigue, thus decreasing human error resulting from fatigue. However, these regulations may not reflect that actual fatigue variation and fatigue levels can be decreased still more by scheduling appropriately. This paper focuses on optimal work shift scheduling to reduce air traffic controller fatigue. First, a mathematical model is established to describe fatigue levels. The objective function is to reduce the fatigue peak produced by work shifts as much as possible. Various constraints, such as holidays and manpower requirements are considered. The optimization problem is then solved using integer programming. We take a sample schedule and draw conclusions by comparing our results with the original fatigue levels.

  9. Hydrodynamic behavior of a lab-scale upflow anaerobic sludge blanket reactor (UASB operated with an adopted hydraulic retention time (HRT of 12 hours Comportamento hidrodinâmico de um reator anaeróbio de manta de lodo (UASB em escala de bancada operando com tempo de detenção hidráulica (TDH de 12 horas

    Directory of Open Access Journals (Sweden)

    Aguinaldo Menegassi Pereira Lourenço

    2009-08-01

    Full Text Available The present research was carried out in the Laboratory of Water Analysis at the Engineering Department at Federal University of Lavras (LWAED-UFLA, in order to evaluate the hydrodynamic behavior of a lab-scale upflow anaerobic sludge blanket reactor (UASB that was continuously fed with liquid effluent from swine manure with solid separation over 2mm. The hydrodynamic parameters were determined by a tracer study, under hydraulic retention time (HRT of 12 hours, using Lithium Chloride (LiCl as a tracer. The system was monitored periodically through physical analysis of samples collected at UASB, during the steady-state operational conditions. The physical-chemical analyses were accomplished using a flame photometry. The operational average temperature in the UASB reactor was 23.9ºC .The UASB hydrodynamic parameters determined were: average residence time ( of 38.3 h, number of dispersion d= 0.27, and the flow type was characterized as dispersed flow of great intensity. This research is of great importance due to the fact that the scaling-up of biological reactors is based on the hydrodynamic behavior, through which the bacterial kinetic is directly influenced, as reported by Saleh (2004.A presente pesquisa foi realizada no Laboratório de Análise de Água do Departamento de Engenharia na Universidade Federal de Lavras (LAADEG-UFLA, para avaliar o comportamento hidrodinâmico de um reator anaeróbio de manta de lodo (UASB, em escala laboratorial, alimentado continuamente com água residuária do confinamento de suínos isenta de sólidos com diâmetro acima de 2 mm. Na avaliação dos parâmetros hidrodinâmicos foi utilizado o cloreto de lítio (LiCl como traçador, sob tempo de detenção hidráulica (TDH de 12 horas. O monitoramento foi realizado, quando o reator UASB apresentava condições permanentes "steady-state". As análises físico-químicas foram realizadas em fotômetro de chama, de amostras retiradas na saída da unidade de

  10. One night of sleep deprivation decreases treadmill endurance performance.

    Science.gov (United States)

    Oliver, Samuel J; Costa, Ricardo J S; Laing, Stewart J; Bilzon, James L J; Walsh, Neil P

    2009-09-01

    The aim was to test the hypothesis that one night of sleep deprivation will impair pre-loaded 30 min endurance performance and alter the cardio-respiratory, thermoregulatory and perceptual responses to exercise. Eleven males completed two randomised trials separated by 7 days: once after normal sleep (496 (18) min: CON) and once following 30 h without sleep (SDEP). After 30 h participants performed a 30 min pre-load at 60% [VO(2 max) followed by a 30 min self-paced treadmill distance test. Speed, RPE, core temperature (T(re)), mean skin temperature (T(sk)), heart rate (HR) and respiratory parameters VO(2 max), VCO(2), VE, RER pre-load only) were measured. Less distance (P = 0.016, d = 0.23) was covered in the distance test after SDEP (6037 (759) 95%CI 5527 to 6547 m) compared with CON (6224 (818) 95%CI 5674 to 6773 m). SDEP did not significantly alter T(re) at rest or thermoregulatory responses during the pre-load including heat storage (0.8 degrees C) and T(sk). With the exception of raised VO(2) at 30 min on the pre-load, cardio-respiratory parameters, RPE and speed were not different between trials during the pre-load or distance test (distance test mean HR, CON 174 (12), SDEP 170 (13) beats min(-1): mean RPE, CON 14.8 (2.7), SDEP 14.9 (2.6)). In conclusion, one night of sleep deprivation decreased endurance performance with limited effect on pacing, cardio-respiratory or thermoregulatory function. Despite running less distance after sleep deprivation compared with control, participants' perception of effort was similar indicating that altered perception of effort may account for decreased endurance performance after a night without sleep.

  11. "Food addiction" is associated with night eating severity.

    Science.gov (United States)

    Nolan, Laurence J; Geliebter, Allan

    2016-03-01

    Night eating syndrome (NES) and "food addiction" (FA) are associated with elevated body mass index (BMI) and disturbed eating behavior. The present study was conducted to examine whether NES is associated with FA, and whether BMI, depression and sleep quality contribute to any relationship between NES and FA. Two groups were studied: a sample of 254 university students and a sample of 244 older adults. All completed the Yale Food Addiction Scale (YFAS), the Night Eating Questionnaire (NEQ), the Zung Self-report Depression Scale, and the Pittsburgh Sleep Quality Index, and BMI was computed from height and weight. In both samples, higher global NEQ scores were significantly correlated with more FA symptoms, elevated depression, and poorer sleep quality, and these correlations were significantly higher in the older adult sample than in the younger student sample. Higher BMI was significantly correlated with NEQ score only in the older adult sample. The hypothesis that the prediction of NEQ by YFAS was moderated by BMI and group membership (moderated moderation) was tested; while the prediction of NEQ by YFAS was not moderated by BMI, elevated YFAS predicted higher NEQ in the adult sample than it did in the student sample. In addition, multiple regression revealed that "continued use of food despite adverse effects" was the sole FA symptom predictive of NES symptoms in students while in older adults food tolerance was the only predictor of NES. Thus, NES appears to be associated with FA, more strongly in an older community sample; higher food tolerance in NES may contribute to a desire to eat late in the evening and/or when awakening at night. PMID:26724725

  12. A study of effect of shift work, sex, and smoking on development of ONIHL in plastic weavers

    Directory of Open Access Journals (Sweden)

    Jayesh D Solanki

    2013-01-01

    Full Text Available Background: Exposure to Occupational noise is the major avoidable cause of permanent hearing loss that is preventable by protective measures. Present study evaluated hearing profile and effects of shift, sex, and smoking on hearing loss in plastic weavers working in textile industry exposed to impact type of noise. Materials and Methods: A cross-sectional study of hearing threshold of various shift workers of plastic weaving industries (18 males, 32 females at various frequencies was done and effect of various factors was tested at low and high frequencies and compared at 4 kHz, 6 kHz, and 8 kHz statistically. Results: Hearing thresholds were significantly higher at high frequencies than speech frequencies, in day shift workers than night shift workers and within day shift workers more with continuous type of shift work than interrupted type. Females showed better hearing than males and for non-smokers than smokers, but the difference observed in both instances proved statistically insignificant. Conclusion: It can be concluded that the use of alternate day and night shift, interrupted day shift may be used to prevent hearing loss and for further confirmation few more studies are warranted. Being female and non smoking also proved an advantage. Comparatively, mild to moderate degree of hearing loss further reinforces the scope of prevention by hearing protective devices and interrupted shift design of work.

  13. LEECH: A 100 Night Exoplanet Imaging Survey at the LBT

    CERN Document Server

    Skemer, Andrew; Bailey, Vanessa; Biller, Beth; Bonnefoy, Mickael; Brandner, Wolfgang; Buenzli, Esther; Close, Laird; Crepp, Justin; Defrere, Denis; Desidera, Silvano; Eisner, Josh; Esposito, Simone; Fortney, Jonathan; Henning, Thomas; Hinz, Phil; Hofmann, Karl-Heinz; Leisenring, Jarron; Males, Jared; Millan-Gabet, Rafael; Morzinski, Katie; Oza, Apurva; Pascucci, Ilaria; Patience, Jenny; Rieke, George; Schertl, Dieter; Schlieder, Joshua; Skrutskie, Mike; Su, Kate; Weigelt, Gerd; Woodward, Charles E; Zimmerman, Neil

    2014-01-01

    In February 2013, the LEECH (LBTI Exozodi Exoplanet Common Hunt) survey began its 100-night campaign from the Large Binocular Telescope atop Mount Graham in Arizona. LEECH nearly complements other high-contrast planet imaging efforts by observing stars in L' band (3.8 microns) as opposed to the shorter wavelength near-infrared bands (1-2.3 microns). This part of the spectrum offers deeper mass sensitivity for intermediate age (several hundred Myr-old) systems, since their Jovian-mass planets radiate predominantly in the mid-infrared. In this proceedings, we present the science goals for LEECH and a preliminary contrast curve from some early data.

  14. LEECH: A 100 Night Exoplanet Imaging Survey at the LBT

    Science.gov (United States)

    Skemer, Andrew; Apai, Daniel; Bailey, Vanessa; Biller, Beth; Bonnefoy, Mickael; Brandner, Wolfgang; Buenzli, Esther; Close, Laird; Crepp, Justin; Defrere, Denis; Desidera, Silvano; Eisner, Josh; Esposito, Simone; Fortney, Jonathan; Henning, Thomas; Hinz, Phil; Hofmann, Karl-Heinz; Leisenring, Jarron; Males, Jared; Millan-Gabet, Rafael; Morzinski, Katie; Oza, Apurva; Pascucci, Ilaria; Patience, Jenny; Rieke, George; Schertl, Dieter; Schlieder, Joshua; Skrutskie, Mike; Su, Kate; Weigelt, Gerd; Woodward, Charles E.; Zimmerman, Neil

    2014-01-01

    In February 2013, the LEECH (LBTI Exozodi Exoplanet Common Hunt) survey began its 100-night campaign from the Large Binocular Telescope atop Mount Graham in Arizona. LEECH neatly complements other high-contrast planet imaging efforts by observing stars in L' band (3.8 microns) as opposed to the shorter wavelength near-infrared bands (1-2.3 microns). This part of the spectrum offers deeper mass sensitivity for intermediate age (several hundred Myr-old) systems, since their Jovian-mass planets radiate predominantly in the mid-infrared. In this proceedings, we present the science goals for LEECH and a preliminary contrast curve from some early data.

  15. New Phase Shifting Algorithms Insensitive to Linear Phase Shift Errors

    Directory of Open Access Journals (Sweden)

    J. Novák

    2002-01-01

    Full Text Available This article describes and analyses multistep algorithms for evaluating of the wave field phase in interferometric measurements using the phase shifting technique. New phase shifting algorithms are proposed, with a constant but arbitrary phase shift between captured frames of the intensity of the interference field. The phase evaluation process then does not depend on linear phase shift errors. A big advantage of the described algorithms is their ability to determine the phase shift value at every point of the detector plane. A detailed analysis of these algorithms with respect to main factors that affect interferometric measurements is then carried out. The dependency of these algorithms on phase shift values is also studied several phase calculation algorithms are proposed. These are compared with respect to the resulting phase errors.

  16. Antiretroviral therapy: Shifting sands.

    Science.gov (United States)

    Sashindran, V K; Chauhan, Rajeev

    2016-01-01

    HIV/AIDS has been an extremely difficult pandemic to control. However, with the advent of antiretroviral therapy (ART), HIV has now been transformed into a chronic illness in patients who have continued treatment access and excellent long-term adherence. Existing indications for ART initiation in asymptomatic patients were based on CD4 levels; however, recent evidence has broken the shackles of CD4 levels. Early initiation of ART in HIV patients irrespective of CD4 counts can have profound positive impact on morbidity and mortality. Early initiation of ART has been found not only beneficial for patients but also to community as it reduces the risk of transmission. There have been few financial concerns about providing ART to all HIV-positive people but various studies have proven that early initiation of ART not only proves to be cost-effective but also contributes to economic and social growth of community. A novel multidisciplinary approach with early initiation and availability of ART at its heart can turn the tide in our favor in future. Effective preexposure prophylaxis and postexposure prophylaxis can also lower transmission risk of HIV in community. New understanding of HIV pathogenesis is opening new vistas to cure and prevention. Various promising candidate vaccines and drugs are undergoing aggressive clinical trials, raising optimism for an ever-elusive cure for HIV. This review describes various facets of tectonic shift in management of HIV. PMID:26900224

  17. Sleep disorders: insomnia, sleepwalking, night terrors, nightmares, and enuresis.

    Science.gov (United States)

    Kales, A; Soldatos, C R; Kales, J D

    1987-04-01

    All five sleep disorders reviewed in this article can be adequately evaluated in the physician's office by taking a sleep history and conducting a careful general medical and psychiatric assessment. Insomnia, the commonest sleep disorder, is more prevalent among women and elderly and psychosocially disadvantaged persons. Personality factors such as a tendency toward the internalization of emotions and the occurrence of stressful life events also play a major role in the development of chronic insomnia. A multidimensional approach is indicated for the treatment of chronic insomnia; hypnotic drugs should be used only as an adjunct to this treatment. In children, sleepwalking and night terrors (two manifestations of the same pathophysiologic substrate), nightmares, and enuresis are commonly related to developmental factors; counseling and reassurance of the parents is indicated. Psychopathologic disorders are usually present in secondary enuresis, as well as in sleepwalking, night terrors, and nightmares that occur in adulthood. Psychotherapy and the occasional use of psychotropic drugs may be necessary in the treatment given adults with these disorders. PMID:3548525

  18. The new world atlas of artificial night sky brightness

    CERN Document Server

    Falchi, Fabio; Duriscoe, Dan; Kyba, Christopher C M; Elvidge, Christopher D; Baugh, Kimberly; Portnov, Boris A; Rybnikova, Nataliya A; Furgoni, Riccardo

    2016-01-01

    Artificial lights raise night sky luminance, creating the most visible effect of light pollution-artificial skyglow. Despite the increasing interest among scientists in fields such as ecology, astronomy, health care, and land-use planning, light pollution lacks a current quantification of its magnitude on a global scale. To overcome this, we present the world atlas of artificial sky luminance, computed with our light pollution propagation software using new high-resolution satellite data and new precision sky brightness measurements. This atlas shows that more than 80% of the world and more than 99% of the U.S. and European populations live under light-polluted skies. The Milky Way is hidden from more than one-third of humanity, including 60% of Europeans and nearly 80% of North Americans. Moreover, 23% of the world's land surfaces between 75{\\deg}N and 60{\\deg}S, 88% of Europe, and almost half of the United States experience light-polluted nights.

  19. Evaluation of Night Route Network on Flight Efficiency in Europe

    Directory of Open Access Journals (Sweden)

    Tomislav Mihetec

    2011-09-01

    Full Text Available There are many different concepts and definitions for the flight efficiency, where every stakeholder involved in air transport has its own perception on flight efficiency. Flight efficiency concept is based on trade-offs between safety, airspace capacity, fuel consumption, flying distance, time distance, time cost, fuel cost etc. Flight time and flying distance which has impact to fuel burn and operation costs to airspace users are mainly generated by deviations from the optimum trajectories. According to the Performance Review Commission (PRC Report in 2009 average en-route extension in Europe was 47.6 km, with the year on year improvement of 1.2 km. The PRC Report emphasized that there is constant increase of medium/long haul flights operated by aircraft operators in Europe while short haul flights are decreasing. One of the issues, concerning flight efficiency in Europe, is that aircraft operators are not using night routes sufficient during flight planning process. This paper is presenting flight efficiency for the traffic demand using night route network and not using it at all. Flight inefficiency is expresses by the agreed performance indicators: distance difference (NM, duration difference (min, fuel combustion difference (kg and CO2 emission (t environmental indicator.

  20. The new world atlas of artificial night sky brightness.

    Science.gov (United States)

    Falchi, Fabio; Cinzano, Pierantonio; Duriscoe, Dan; Kyba, Christopher C M; Elvidge, Christopher D; Baugh, Kimberly; Portnov, Boris A; Rybnikova, Nataliya A; Furgoni, Riccardo

    2016-06-01

    Artificial lights raise night sky luminance, creating the most visible effect of light pollution-artificial skyglow. Despite the increasing interest among scientists in fields such as ecology, astronomy, health care, and land-use planning, light pollution lacks a current quantification of its magnitude on a global scale. To overcome this, we present the world atlas of artificial sky luminance, computed with our light pollution propagation software using new high-resolution satellite data and new precision sky brightness measurements. This atlas shows that more than 80% of the world and more than 99% of the U.S. and European populations live under light-polluted skies. The Milky Way is hidden from more than one-third of humanity, including 60% of Europeans and nearly 80% of North Americans. Moreover, 23% of the world's land surfaces between 75°N and 60°S, 88% of Europe, and almost half of the United States experience light-polluted nights. PMID:27386582

  1. Cognitive behavior therapy for night eating syndrome: a pilot study.

    Science.gov (United States)

    Allison, Kelly C; Lundgren, Jennifer D; Moore, Reneé H; O'Reardon, John P; Stunkard, Albert J

    2010-01-01

    Because no studies of psychotherapy treatments for night eating syndrome (NES) have been published, we conducted a pilot study of a 10-session cognitive behavior therapy (CBT) for NES. Twenty-five patients (19 female, 6 male) were screened and comprehensively assessed before being enrolled. At each visit, patients completed the Night Eating Symptom Scale (NESS), were weighed, and number of awakenings and the number of nocturnal ingestions and daily caloric intake were calculated from weekly food and sleep records. Mixed model regression analyses [of the data] showed significant decreases in caloric intake after dinner (35.0% to 24.9%); number of nocturnal ingestions (8.7 to 2.6 per week); weight (82.5 to 79.4 kg); and NESS score (28.7 to 16.3; all p values <0.0001). Number of awakenings per week, depressed mood, and quality of life also improved significantly (p values <.02). This first clinical trial of CBT for NES shows significant improvements in the core aspects of NES and weight reduction, suggesting the need for a controlled treatment trial. PMID:20405767

  2. A biobehavioural model of the night eating syndrome.

    Science.gov (United States)

    Stunkard, A J; Allison, K C; Lundgren, J D; O'Reardon, J P

    2009-11-01

    This paper will propose a biobehavioral mechanism for the Night Eating Syndrome (NES), a disorder characterized by a delayed circadian rhythm of food intake and neuroendocrine function. Food intake consists of at least 25% of daily caloric intake after the evening meal and/or at least two nighttime awakenings with ingestions per week. This will be explored by reviewing neuroimaging of brain serotonin transporters (SERT) and treatment with selective serotonin reuptake inhibitors (SSRIs). SERT binding is elevated in the midbrain of night eaters, causing dysregulation of the circadian rhythm of both food intake and neuroendocrine function. The administration of SSRIs blocks the reuptake of serotonin and restores the circadian rhythm of both food intake and neuroendocrine function. This hypothesis implies that reduction of SERT activity should increase postsynaptic serotonin transmission and relieve NES. This is precisely the effect of SSRIs. NES is a function of elevated SERT, and blocking of SERT with an SSRI resolves NES. This model of NES attests to the validity of the diagnosis of NES and the criteria by which it is identified, and it provides an explanation of the mechanism. PMID:19849804

  3. Assessment of night eating syndrome among late adolescents

    Directory of Open Access Journals (Sweden)

    Suri S

    2010-01-01

    Full Text Available With the increase in the trend of social networking, celebrations, over a couple of decades weather in the hostel or at home. Snacking has become an important aspect of activity. Today teen prefer snacks more than a proper meal. Skipping of meal and nibbling in between meal is a common practice. The main meals (breakfast, lunch and dinner are missed and total proportions of calories are consumed from the snacks eaten. Hence, this disordered eating behavior when continued may further lead to development of serious syndrome i.e., night eating syndrome. A purposive random sample comprising 188 males and 192 females (N=380, adolescents (18-22 years were selected including hostlers and day scholars. The subjects were administered with self-organized questionnaire so to analyze the pattern of NES among them. Out of total 380 respondents, the numbers of hostlers were 211 and day scholars 169, while boys were 188 and girls were 192 in number. Results indicated that nearly half the percentage of adolescents snacked at night, out of which very few respondents met the criteria of NES, in which the number of hostlers were quite more than the day scholars, i.e.,76.3%.

  4. The new world atlas of artificial night sky brightness

    Science.gov (United States)

    Falchi, Fabio; Cinzano, Pierantonio; Duriscoe, Dan; Kyba, Christopher C. M.; Elvidge, Christopher D.; Baugh, Kimberly; Portnov, Boris A.; Rybnikova, Nataliya A.; Furgoni, Riccardo

    2016-01-01

    Artificial lights raise night sky luminance, creating the most visible effect of light pollution—artificial skyglow. Despite the increasing interest among scientists in fields such as ecology, astronomy, health care, and land-use planning, light pollution lacks a current quantification of its magnitude on a global scale. To overcome this, we present the world atlas of artificial sky luminance, computed with our light pollution propagation software using new high-resolution satellite data and new precision sky brightness measurements. This atlas shows that more than 80% of the world and more than 99% of the U.S. and European populations live under light-polluted skies. The Milky Way is hidden from more than one-third of humanity, including 60% of Europeans and nearly 80% of North Americans. Moreover, 23% of the world’s land surfaces between 75°N and 60°S, 88% of Europe, and almost half of the United States experience light-polluted nights. PMID:27386582

  5. Plains Elevated Convection at Night (PECAN) Experiment Science Plan

    Energy Technology Data Exchange (ETDEWEB)

    Turner, D [National Oceanic and Atmospheric Administration; Parsons, D [NCAR; Geerts, B [Department of Atmospheric Science, University of Wyoming

    2015-03-01

    The Plains Elevated Convection at Night (PECAN) experiment is a large field campaign that is being supported by the National Science Foundation (NSF) with contributions from the National Oceanic and Atmospheric Administration (NOAA), the National Atmospheric and Space Administration (NASA), and the U.S. Department of Energy (DOE). The overarching goal of the PECAN experiment is to improve the understanding and simulation of the processes that initiate and maintain convection and convective precipitation at night over the central portion of the Great Plains region of the United States (Parsons et al. 2013). These goals are important because (1) a large fraction of the yearly precipitation in the Great Plains comes from nocturnal convection, (2) nocturnal convection in the Great Plains is most often decoupled from the ground and, thus, is forced by other phenomena aloft (e.g., propagating bores, frontal boundaries, low-level jets [LLJ], etc.), (3) there is a relative lack of understanding how these disturbances initiate and maintain nocturnal convection, and (4) this lack of understanding greatly hampers the ability of numerical weather and climate models to simulate nocturnal convection well. This leads to significant uncertainties in predicting the onset, location, frequency, and intensity of convective cloud systems and associated weather hazards over the Great Plains.

  6. A “Grand Night Out” at the Laboratory

    CERN Multimedia

    Caroline Duc

    2012-01-01

    To mark the European Researchers Night on Friday 28 September 2012, many scientists from the LHC and its experiments came to share their knowledge with young enthusiasts from the local area and further afield.   “This third European Researchers Night at CERN attracted over 250 young people aged between 13 and 18,” reports Laëtitia Pedroso (Communications Group), one of the organisers of the event. “No fewer than 77 volunteers made themselves available to give these young people a very special user-friendly evening!” Their visit included meeting scientists, activities, learning about new things and, who knows, perhaps the inspiration to become a scientist. The participants, who were selected on the basis of the reasons they gave for wanting to participate, had a once-in-a-lifetime opportunity to spend two or three hours alongside the researchers. They visited the CERN Control Room or one of CERN's experiments, ALICE, ATLAS, CMS, TOTEM or LH...

  7. NV-CMOS HD camera for day/night imaging

    Science.gov (United States)

    Vogelsong, T.; Tower, J.; Sudol, Thomas; Senko, T.; Chodelka, D.

    2014-06-01

    SRI International (SRI) has developed a new multi-purpose day/night video camera with low-light imaging performance comparable to an image intensifier, while offering the size, weight, ruggedness, and cost advantages enabled by the use of SRI's NV-CMOS HD digital image sensor chip. The digital video output is ideal for image enhancement, sharing with others through networking, video capture for data analysis, or fusion with thermal cameras. The camera provides Camera Link output with HD/WUXGA resolution of 1920 x 1200 pixels operating at 60 Hz. Windowing to smaller sizes enables operation at higher frame rates. High sensitivity is achieved through use of backside illumination, providing high Quantum Efficiency (QE) across the visible and near infrared (NIR) bands (peak QE cinematography/broadcast systems, biofluorescence/microscopy imaging, day/night security and surveillance, and other high-end applications which require HD video imaging with high sensitivity and wide dynamic range. The camera comes with an array of lens mounts including C-mount and F-mount. The latest test data from the NV-CMOS HD camera will be presented.

  8. Considerations of circadian impact for defining 'shift work' in cancer studies: IARC Working Group Report.

    Science.gov (United States)

    Stevens, Richard G; Hansen, Johnni; Costa, Giovanni; Haus, Erhard; Kauppinen, Timo; Aronson, Kristan J; Castaño-Vinyals, Gemma; Davis, Scott; Frings-Dresen, Monique H W; Fritschi, Lin; Kogevinas, Manolis; Kogi, Kazutaka; Lie, Jenny-Anne; Lowden, Arne; Peplonska, Beata; Pesch, Beate; Pukkala, Eero; Schernhammer, Eva; Travis, Ruth C; Vermeulen, Roel; Zheng, Tongzhang; Cogliano, Vincent; Straif, Kurt

    2011-02-01

    Based on the idea that electric light at night might account for a portion of the high and rising risk of breast cancer worldwide, it was predicted long ago that women working a non-day shift would be at higher risk compared with day-working women. This hypothesis has been extended more recently to prostate cancer. On the basis of limited human evidence and sufficient evidence in experimental animals, in 2007 the International Agency for Research on Cancer (IARC) classified 'shift work that involves circadian disruption' as a probable human carcinogen, group 2A. A limitation of the epidemiological studies carried out to date is in the definition of 'shift work.' IARC convened a workshop in April 2009 to consider how 'shift work' should be assessed and what domains of occupational history need to be quantified for more valid studies of shift work and cancer in the future. The working group identified several major domains of non-day shifts and shift schedules that should be captured in future studies: (1) shift system (start time of shift, number of hours per day, rotating or permanent, speed and direction of a rotating system, regular or irregular); (2) years on a particular non-day shift schedule (and cumulative exposure to the shift system over the subject's working life); and (3) shift intensity (time off between successive work days on the shift schedule). The group also recognised that for further domains to be identified, more research needs to be conducted on the impact of various shift schedules and routines on physiological and circadian rhythms of workers in real-world environments.

  9. Considerations of circadian impact for defining 'shift work' in cancer studies: IARC Working Group Report.

    Science.gov (United States)

    Stevens, Richard G; Hansen, Johnni; Costa, Giovanni; Haus, Erhard; Kauppinen, Timo; Aronson, Kristan J; Castaño-Vinyals, Gemma; Davis, Scott; Frings-Dresen, Monique H W; Fritschi, Lin; Kogevinas, Manolis; Kogi, Kazutaka; Lie, Jenny-Anne; Lowden, Arne; Peplonska, Beata; Pesch, Beate; Pukkala, Eero; Schernhammer, Eva; Travis, Ruth C; Vermeulen, Roel; Zheng, Tongzhang; Cogliano, Vincent; Straif, Kurt

    2011-02-01

    Based on the idea that electric light at night might account for a portion of the high and rising risk of breast cancer worldwide, it was predicted long ago that women working a non-day shift would be at higher risk compared with day-working women. This hypothesis has been extended more recently to prostate cancer. On the basis of limited human evidence and sufficient evidence in experimental animals, in 2007 the International Agency for Research on Cancer (IARC) classified 'shift work that involves circadian disruption' as a probable human carcinogen, group 2A. A limitation of the epidemiological studies carried out to date is in the definition of 'shift work.' IARC convened a workshop in April 2009 to consider how 'shift work' should be assessed and what domains of occupational history need to be quantified for more valid studies of shift work and cancer in the future. The working group identified several major domains of non-day shifts and shift schedules that should be captured in future studies: (1) shift system (start time of shift, number of hours per day, rotating or permanent, speed and direction of a rotating system, regular or irregular); (2) years on a particular non-day shift schedule (and cumulative exposure to the shift system over the subject's working life); and (3) shift intensity (time off between successive work days on the shift schedule). The group also recognised that for further domains to be identified, more research needs to be conducted on the impact of various shift schedules and routines on physiological and circadian rhythms of workers in real-world environments. PMID:20962033

  10. Sleep and recovery in physicians on night call: a longitudinal field study

    Directory of Open Access Journals (Sweden)

    Malmberg Birgitta

    2010-08-01

    Full Text Available Abstract Background It is well known that physicians' night-call duty may cause impaired performance and adverse effects on subjective health, but there is limited knowledge about effects on sleep duration and recovery time. In recent years occupational stress and impaired well-being among anaesthesiologists have been frequently reported for in the scientific literature. Given their main focus on handling patients with life-threatening conditions, when on call, one might expect sleep and recovery to be negatively affected by work, especially in this specialist group. The aim of the present study was to examine whether a 16-hour night-call schedule allowed for sufficient recovery in anaesthesiologists compared with other physician specialists handling less life-threatening conditions, when on call. Methods Sleep, monitored by actigraphy and Karolinska Sleep Diary/Sleepiness Scale on one night after daytime work, one night call, the following first and second nights post-call, and a Saturday night, was compared between 15 anaesthesiologists and 17 paediatricians and ear, nose, and throat surgeons. Results Recovery patterns over the days after night call did not differ between groups, but between days. Mean night sleep for all physicians was 3 hours when on call, 7 h both nights post-call and Saturday, and 6 h after daytime work (p Conclusions Despite considerable sleep loss during work on night call, and unexpectedly short sleep after ordinary day work, the physicians' self-reports indicate full recovery after two nights' sleep. We conclude that these 16-hour night duties were compatible with a short-term recovery in both physician groups, but the limited sleep duration in general still implies a long-term health concern. These results may contribute to the establishment of safe working hours for night-call duty in physicians and other health-care workers.

  11. Portable shift register

    International Nuclear Information System (INIS)

    An electronics package for a small, battery-operated, self-contained, neutron coincidence counter based on a portable shift-register (PSR) has been developed. The counter was developed for applications not adequately addressed by commercial packages, including in-plant measurements to demonstrate compliance with regulations (domestic and international), in-plant process control, and in-field measurements (environmental monitoring or safeguards). Our package's features, which address these applications, include the following: Small size for portability and ease of installation;battery or mains operation; a built-in battery to power the unit and a typical detector such as a small sample counter, for over 6 h if power lines are bad or noisy, if there is a temporary absence of power, or if portability is desired; complete support, including bias, for standard neutron detectors; a powerful communications package to easily facilitate robust external control over a serial port; and a C-library to simplify creating external control programs in computers or other controllers. Whereas the PSR specifically addresses the applications mentioned above, it also performs all the measurements made by previous electronics packages for neutron coincidence counters developed at Los Alamos and commercialized. The PSR electronics package, exclusive of carrying handle, is 8 by 10 by 20 cm; it contains the circuit boards, battery, and bias supply and weighs less than 2 kg. This instrument package is the second in an emerging family of portable measurement instruments being developed; the first was the Miniature and Modular Multichannel Analyzer (M3CA). The PSR makes extensive use of hardware and software developed for the M3CA; like the M3CA, it is intended primarily for use with an external controller interfaced over a serial channel

  12. Instrument Measures Shift In Focus

    Science.gov (United States)

    Steimle, Lawrence J.

    1992-01-01

    Optical components tested at wavelengths from ultraviolet to infrared. Focus-shift-measuring instrument easy to use. Operated in lighted room, without having to make delicate adjustments while peering through microscope. Measures distance along which focal point of converging beam of light shifted by introduction of nominally plane parallel optical component into beam. Intended primarily for measuring focus shifts produced by windows and filters at wavelengths from 120 to 1,100 nanometers. Portable, compact, and relatively inexpensive for degree of precision.

  13. Zero-shifted accelerometer outputs

    Science.gov (United States)

    Galef, Arnold

    1986-08-01

    It is claimed that the commonly appearing zero-shift in pyroshock data is usually a symptom of a malfunctioning measurement system, so that the data can not be repaired (by high-pass filtering or equivalent) unless tests can be devised that permit the demonstration that the system is operating in a linear mode in all respects other than the shift. The likely cause of the zero-shift and its prevention are discussed.

  14. Reducing understaffing and shift work with Temporal Profile Optimization (TPO).

    Science.gov (United States)

    Boonstra-Hörwein, Karin; Punzengruber, Dieter; Gärtner, Johannes

    2011-01-01

    The ergonomic quality of shift schedules can be improved by reducing time periods with understaffing (resulting in work-pressure, poor quality, etc.) and evening, night and/or weekend work. Improving the quality of forecasts regarding future workforce requirements as well as the optimization of work processes by moving as much work as possible to more suitable time zones are two approaches to this. We introduce and propose Temporal Profile Optimization (TPO) as a systematic approach to question the demand as well as its translation to workforce planning. Temporal profiles describe the number of employees needed over time (e.g. for different days of the week, times of day, for different calendar days) as well as the shift-times and staffing levels planned to meet this workforce demand. With Temporal Profile Forecasts we introduce a forecasting method that is based on time-stamped historical data and methodologically supplements traditional time series models like SARIMA in many ways. With Temporal Profile Reengineering we use systematic and often participatory methods from business process reengineering to identify moveable work and streamline the load lines by (re-)distributing movable work such that shifts and schedules are improved. The approach is illustrated along two business cases. Using TP-Forecasts for air traffic controllers increased forecasting accuracy whereby a different shift design was possible resulting in 3-4% less shift work. In a warehouse of an Austrian freight carrier a TP-Forecast together with TP-Reengineering helped to rearrange work processes such that the resulting workforce requirements curve had a more even form. This allowed for shorter shifts than before (thereby decreasing overtime). Experiences made so far stress the potential of Temporal Profile Optimization. PMID:20708728

  15. Quantized beam shifts in graphene

    Energy Technology Data Exchange (ETDEWEB)

    de Melo Kort-Kamp, Wilton Junior [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Sinitsyn, Nikolai [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Dalvit, Diego Alejandro Roberto [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-10-08

    We predict the existence of quantized Imbert-Fedorov, Goos-Hanchen, and photonic spin Hall shifts for light beams impinging on a graphene-on-substrate system in an external magnetic field. In the quantum Hall regime the Imbert-Fedorov and photonic spin Hall shifts are quantized in integer multiples of the fine structure constant α, while the Goos-Hanchen ones in multiples of α2. We investigate the influence on these shifts of magnetic field, temperature, and material dispersion and dissipation. An experimental demonstration of quantized beam shifts could be achieved at terahertz frequencies for moderate values of the magnetic field.

  16. Circadian rhythm profiles in women with night eating syndrome.

    Science.gov (United States)

    Goel, Namni; Stunkard, Albert J; Rogers, Naomi L; Van Dongen, Hans P A; Allison, Kelly C; O'Reardon, John P; Ahima, Rexford S; Cummings, David E; Heo, Moonseong; Dinges, David F

    2009-02-01

    Night eating syndrome (NES) is characterized by evening hyperphagia and frequent awakenings accompanied by food intake. Patients with NES display a delayed circadian pattern of food intake but retain a normal sleep-wake cycle. These characteristics initiated the current study, in which the phase and amplitude of behavioral and neuroendocrine circadian rhythms in patients with NES were evaluated. Fifteen women with NES (mean age +/- SD, 40.8 +/- 8.7 y) and 14 control subjects (38.6 +/- 9.5 y) were studied in the laboratory for 3 nights, with food intake measured daily. Blood also was collected for 25 h (every 2 h from 0800 to 2000 h, and then hourly from 2100 to 0900 h) and assayed for glucose and 7 hormones (insulin, ghrelin, leptin, melatonin, cortisol, thyroid-stimulating hormone [TSH] and prolactin). Statistical analyses utilized linear mixed-effects cosinor analysis. Control subjects displayed normal phases and amplitudes for all circadian rhythms. In contrast, patients with NES showed a phase delay in the timing of meals, and delayed circadian rhythms for total caloric, fat, and carbohydrate intake. In addition, phase delays of 1.0 to 2.8 h were found in 2 food-regulatory rhythms-leptin and insulin-and in the circadian melatonin rhythm (with a trend for a delay in the circadian cortisol rhythm). In contrast, circulating levels of ghrelin, the primary hormone that stimulates food intake, were phase advanced by 5.2 h. The glucose rhythm showed an inverted circadian pattern. Patients with NES also showed reduced amplitudes in the circadian rhythms of food intake, cortisol, ghrelin, and insulin, but increased TSH amplitude. Thus, patients with NES demonstrated significant changes in the timing and amplitude of various behavioral and physiological circadian markers involved in appetite and neuroendocrine regulation. As such, NES may result from dissociations between central (suprachiasmatic nucleus) timing mechanisms and putative oscillators elsewhere in the

  17. Circadian and melatonin disruption by exposure to light at night drives intrinsic resistance to tamoxifen therapy in breast cancer.

    Science.gov (United States)

    Dauchy, Robert T; Xiang, Shulin; Mao, Lulu; Brimer, Samantha; Wren, Melissa A; Yuan, Lin; Anbalagan, Muralidharan; Hauch, Adam; Frasch, Tripp; Rowan, Brian G; Blask, David E; Hill, Steven M

    2014-08-01

    Resistance to endocrine therapy is a major impediment to successful treatment of breast cancer. Preclinical and clinical evidence links resistance to antiestrogen drugs in breast cancer cells with the overexpression and/or activation of various pro-oncogenic tyrosine kinases. Disruption of circadian rhythms by night shift work or disturbed sleep-wake cycles may lead to an increased risk of breast cancer and other diseases. Moreover, light exposure at night (LEN) suppresses the nocturnal production of melatonin that inhibits breast cancer growth. In this study, we used a rat model of estrogen receptor (ERα(+)) MCF-7 tumor xenografts to demonstrate how altering light/dark cycles with dim LEN (dLEN) speed the development of breast tumors, increasing their metabolism and growth and conferring an intrinsic resistance to tamoxifen therapy. These characteristics were not observed in animals in which the circadian melatonin rhythm was not disrupted, or in animals subjected to dLEN if they received nocturnal melatonin replacement. Strikingly, our results also showed that melatonin acted both as a tumor metabolic inhibitor and a circadian-regulated kinase inhibitor to reestablish the sensitivity of breast tumors to tamoxifen and tumor regression. Together, our findings show how dLEN-mediated disturbances in nocturnal melatonin production can render tumors insensitive to tamoxifen. PMID:25062775

  18. 夜鹰 Jeep cherokee NIGht EaGLe

    Institute of Scientific and Technical Information of China (English)

    2016-01-01

    最近JEEP发布了自由光特别版车型夜鹰。与标准版自由光不同的是,夜鹰版采用了独特的灰色烤漆涂装和18英寸黑色钢琴漆轮毂并在车尾镶嵌有Night Eagle的金属铭牌。重新调校的Multi JetⅡ涡轮增压柴油发动机提供200hp的最高功率输出,并配合经过重新设定的9速手自一体变速器,

  19. Passive ventilation systems with heat recovery and night cooling

    DEFF Research Database (Denmark)

    Hviid, Christian Anker; Svendsen, Svend

    2008-01-01

    In building design the requirements for energy consumption for ventilation, heating and cooling and the requirements for increasingly better indoor climate are two opposing factors. This paper presents the schematic layout and simulation results of an innovative multifunc-tional ventilation concept...... with little energy consumption and with satisfying indoor climate. The concept is based on using passive measures like stack and wind driven ventilation, effective night cooling and low pressure loss heat recovery using two fluid coupled water-to-air heat exchangers developed at the Technical University...... simulation program ESP-r to model the heat and air flows and the results show the feasibility of the proposed ventilation concept in terms of low energy consumption and good indoor climate....

  20. The treatment of night eating: the patient's perspective.

    Science.gov (United States)

    Goncalves, Marcus D; Moore, Reneé H; Stunkard, Albert J; Allison, Kelly C

    2009-05-01

    Night eating (NE) is recognizable and treatable. The purpose of this study was to assess patients' satisfaction with their doctors' treatment of NE and to compare it to that of treatment of a control condition, 'headache'. An Internet-based questionnaire assessed patients' (n = 103) perceptions of their doctors' knowledge and treatment of NE versus headache, levels of treatment satisfaction and demographic and descriptive aspects of their NE. Most patients (61%) were 'not at all satisfied' with their doctors' treatment of NE. Patients reported low recognition and high levels of dismissal of NE by their doctors. Of patients who had been treated for both NE and headache by the same doctor, 29% were 'not at all satisfied' with their treatment of headache compared to 76% 'not at all satisfied' with their treatment of NE (p = 0.02). In conclusion, most patients reported that their doctors did not identify or treat NE, which led to dissatisfaction with their care. PMID:19353556

  1. Motorway closure near the airport for two nights

    CERN Multimedia

    2006-01-01

    In the framework of the current motorway maintenance work, road marking needs to be carried out on the airport section of the Geneva motorway bypass. Weather conditions permitting, this will be done between 8.30 p.m. and 5.00 a.m. on the nights of Wednesday 2 to Thursday 3 August and Thursday 3 to Friday 4 August. The work will be postponed in the event of bad weather, in which case the new date will be announced on Radio RSR and Radio Lac and on tel. 163. While the work is in progress the section concerned will be closed in both directions and traffic will be deviated. We should like to you in advance for your understanding. For further information, tel. 163 or www.autoroute-aeroport.ch Civil Engineering Department, DCTI, State of Geneva

  2. Lévy night flights by the jellyfish Periphylla periphylla

    KAUST Repository

    Ugland, KI

    2014-10-22

    Jellyfish blooms occur in marine environments around the world and have been linked to over-fishing, eutrophication and climatic change. In some coastal areas of Norway, the circumglobal Periphylla periphylla has increased to exceptionally high abundances and has replaced fish as the main planktivorous predator despite the ineffectiveness of its non-visual predation compared to visual fish predation. Using data from a bottom-mounted acoustic platform, we collected 12341 in situ measurements of individual vertical movements of large individuals of P. periphylla. These jellyfish are characterized by a stepwise vertical movement. The distribution of their vertical swimming distances was extremely left skewed; about 85% of the swimming distances were less than 3 m, and a few displacements were extremely long with a maximum of 85 m. Chi-square tests of goodness of fit to the tail and Akaike’s information criterion gave overwhelming evidence of the truncated power law. There was a clear diel pattern in the exponent with values significantly larger than 3 during the daytime and significantly lower than 3 at night. This pattern means that P. periphylla switches from relatively limited movements during the day to Lévy-like flights during the night. Since the abundance of zooplankton is large in the P. periphylla fjord, Brownian motion, rather than Lévy flight, is predicted by the optimal foraging hypothesis. It is therefore possible that the Lévy-like search pattern has evolved in the food-scarce oceanic environment, which is the main natural habitat of P. periphylla. Alternatively, the large individuals of the population addressed here may forage on scarcer prey sources than the main prevailing zooplankton in Lurefjorden.

  3. SWIR air glow mapping of the night sky

    Science.gov (United States)

    Myers, Michael M.; Dayton, David C.; Gonglewski, John D.; Fertig, Gregory; Allen, Jeff; Nolasco, Rudolf; Burns, Dennis; Mons, Ishan

    2010-08-01

    It is well known that luminance from photo-chemical reactions of hydroxyl ions in the upper atmosphere (~85 km altitude) produces a significant amount of night time radiation in the short wave infra-red (SWIR) band of wave length 0.9 to 1.7 μm. Numerous studies of these phenomena have demonstrated that the irradiance shows significant temporal and spatial variations in the night sky. Changes in weather patterns, seasons, sun angle, moonlight, etc have the propensity to alter the SWIR air glow irradiance pattern. By performing multiple SWIR measurements a mosaic representation of the celestial hemisphere was constructed and used to investigate these variations over time and space. The experimental setup consisted of two sensors, an InGaAs SWIR detector and a visible astronomical camera, co-located and bore sighted on an AZ-EL gimbal. This gimbal was programmed to view most of the sky using forty five discrete azimuth and elevation locations. The dwell time at each location was 30 seconds with a total cycle time of less than 30 minutes. The visible astronomical camera collected image data simultaneous with the SWIR camera in order to distinguish SWIR patterns from clouds. Data was reduced through batch processing producing polar representations of the sky irradiance as a function of azimuth, elevation, and time. These spatiotemporal variations in the irradiance, both short and long term, can be used to validate and calibrate physical models of atmospheric chemistry and turbulence. In this paper we describe our experimental setup and present some results of our measurements made over several months in a rural marine environment on the Islands of Kauai and Maui Hawaii.

  4. Single night postoperative prone posturing in idiopathic macular hole surgery.

    LENUS (Irish Health Repository)

    2012-02-01

    Purpose. To evaluate the role of postoperative prone posturing for a single night in the outcome of trans pars plana vitrectomy (TPPV) with internal limiting membrane (ILM) peel and 20% perfluoroethane (C2F6) internal tamponade for idiopathic macular hole. Methods. This prospective trial enrolled 14 eyes in 14 consecutive patients with idiopathic macular hole. All eyes underwent TPPV with vision blue assisted ILM peeling with and without phacoemulsification and intraocular lens (IOL) for macular hole. Intraocular gas tamponade (20% C2F6) was used in all cases with postoperative face-down posturing overnight and without specific posturing afterwards. LogMAR visual acuity, appearance by slit-lamp biomicroscopy, and ocular coherence tomography (OCT) scans were compared preoperatively and postoperatively to assess outcome. Results. Among 14 eyes recruited, all eyes were phakic; 50% of patients underwent concurrent phacoemulsification with IOL. The macular holes were categorized preoperatively by OCT appearance, 4 (28.57%) were stage 2, 7 (50%) were stage 3, and 3 (21.43%) were stage 4. Mean macular hole size was 0.35 disk diameters. Symptoms of macular hole had been present for an average of 6.5 months. All holes (100%) were closed 3 and 6 months postoperatively. Mean visual acuity (logMAR) was improved to 0.61 at 3 months and was stable at 6 months after the surgery. None of the eyes had worse vision postoperatively. Conclusions. Vitrectomy with ILM peeling and 20% C2F6 gas with a brief postoperative 1 night prone posturing regimen is a reasonable approach to achieve anatomic closure in idiopathic macular hole. Concurrent cataract extraction did not alter outcomes and was not associated with any additional complications.

  5. Sleep loss and circadian disruption in shift work: health burden and management.

    Science.gov (United States)

    Rajaratnam, Shantha M W; Howard, Mark E; Grunstein, Ronald R

    2013-10-21

    About 1.5 million Australians are shift workers. Shift work is associated with adverse health, safety and performance outcomes. Circadian rhythm misalignment, inadequate and poor-quality sleep, and sleep disorders such as sleep apnoea, insomnia and shift work disorder (excessive sleepiness and/or insomnia temporally associated with the work schedule) contribute to these associations. Falling asleep at work at least once a week occurs in 32%-36% of shift workers. Risk of occupational accidents is at least 60% higher for non-day shift workers. Shift workers also have higher rates of cardiometabolic diseases and mood disturbances. Road and workplace accidents related to excessive sleepiness, to which shift work is a significant contributor, are estimated to cost $71-$93 billion per annum in the United States. There is growing evidence that understanding the interindividual variability in sleep-wake responses to shift work will help detect and manage workers vulnerable to the health consequences of shift work. A range of approaches can be used to enhance alertness in shift workers, including screening and treating sleep disorders, melatonin treatment to promote sleep during the daytime, and avoidance of inappropriate use of sedatives and wakefulness-promoters such as modafinil and caffeine. Short naps, which minimise sleep inertia, are generally effective. Shifting the circadian pacemaker with appropriately timed melatonin and/or bright light may be used to facilitate adjustment to a shift work schedule in some situations, such as a long sequence of night work. It is important to manage the health risk of shift workers by minimising vascular risk factors through dietary and other lifestyle approaches.

  6. The Status of the United States Population of Night Shark, Carcharhinus signatus

    OpenAIRE

    John K. Carlson; Cortés, Enric; Neer, Julie A.; McCandless, Camilla T.; Beerkircher, Lawrence R.

    2008-01-01

    Night sharks, Carcharhinus signatus, are an oceanic species generally occurring in outer continental shelf waters in the western North Atlantic Ocean including the Caribbean Sea and Gulf of Mexico. Although not targeted, night sharks make up a segment of the shark bycatch in the pelagic longline fishery. Historically, night sharks comprised a significant proportion of the artisanal Cuban shark fishery but today they are rarely caught. Although information from some fisheries has shown a...

  7. Performance characterization of night vision equipment based on Triangle Orientation Discrimination (TOD) methodology

    OpenAIRE

    Laurent, N.; Lejard, C.; Deltel, G.; Bijl, P.

    2013-01-01

    Night vision equipment is crucial in order to accomplish supremacy and safety of the troops on the battlefield. Evidently, system integrators, MODs and end-users need access to reliable quantitative characterization of the expected field performance when using night vision equipment. The Image Intensifier tube is one of the most important engines driving the performance for night vision equipment. As a major tube manufacturer, PHOTONIS has investigated the link between its products physical d...

  8. The control of starch degradation in Arabidopsis thaliana leaves at night

    OpenAIRE

    Feike, Doreen

    2013-01-01

    The aim of this work was to understand how Arabidopsis thaliana plants control starch degradation at night. Starch is the major energy reserve in Arabidopsis. It is broken down at night to maintain growth and metabolism of the plant, when photosynthesis is not possible. The rate of starch degradation follows a linear pattern and is matched to the length of the night period such that almost all starch is exhausted by dawn. The mechanisms and the proteins involved in controlling ...

  9. Night Eating is Associated with Emotional and External Eating in College Students

    OpenAIRE

    Nolan, Laurence J.; Geliebter, Allan

    2012-01-01

    The night eating syndrome (NES) consists of evening hyperphagia and/or nocturnal eating and has been associated with depressed mood, that worsens in the evening. However, it is not consistently related to elevated BMI. The present study was conducted to examine whether a relationship exists between NES and emotional, external, and restrained eating. BMI and sleep quality were also obtained. A sample of 246 students completed the Night Eating Diagnostic Questionnaire (NEDQ), Night Eating Syndr...

  10. Reducing the ecological consequences of night-time light pollution: options and developments

    OpenAIRE

    Gaston, Kevin J; Davies, Thomas W; Bennie, Jonathan; Hopkins, John

    2012-01-01

    1. Much concern has been expressed about the ecological consequences of night-time light pollution. This concern is most often focused on the encroachment of artificial light into previously unlit areas of the night-time environment, but changes in the spectral composition, duration and spatial pattern of light are also recognized as having ecological effects. 2. Here, we examine the potential consequences for organisms of five management options to reduce night-time light pollution. These ar...

  11. Symptoms and Cognitive Functions in Adolescents in Relation to Mobile Phone Use during Night

    OpenAIRE

    Anna Schoeni; Katharina Roser; Martin Röösli

    2015-01-01

    Many adolescents tend to leave their mobile phones turned on during night, accepting that they may be awakened by an incoming text message or call. Using self-reported and objective operator recorded mobile phone use data, we thus aimed to analyze how being awakened during night by mobile phone affects adolescents' perceived health and cognitive functions. In this cross-sectional study, 439 adolescents completed questionnaires about their mobile phone use during night, health related quality ...

  12. Prevalence of night-time dyspnoea in COPD and its implications for prognosis

    DEFF Research Database (Denmark)

    Lange, Peter; Marott, Jacob Louis; Vestbo, Jørgen;

    2014-01-01

    The information on night-time symptoms in chronic obstructive pulmonary disease (COPD) is sparse. We investigated the prevalence of night-time dyspnoea in 6616 individuals with COPD recruited from the general population in the Copenhagen area, Denmark, and described characteristics and prognosis of...... according to both spirometric and clinical GOLD classification, and is associated with presence of daytime respiratory symptoms and cardiac comorbidities. Night-time dyspnoea is a significant predictor of poor prognosis in individuals with COPD....

  13. Flexible Schedules and Shift Work.

    Science.gov (United States)

    Beers, Thomas M.

    2000-01-01

    Flexible work hours have gained prominence, as more than 25 million workers (27.6% of all full-time workers) can now vary their schedules. However, there has been little change since the mid-1980s in the proportion who work a shift other than a regular daytime shift. (JOW)

  14. Regime shifts in resource management

    NARCIS (Netherlands)

    de Zeeuw, A.J.

    2014-01-01

    Resource management has to take account of the possibility of tipping points and regime shifts in ecological systems that provide the resources. This article focuses on the typical model of regime shifts in the ecological literature and analyzes optimal management and common-property issues when tra

  15. Explaining (Missing) Regulator Paradigm Shifts

    DEFF Research Database (Denmark)

    Wigger, Angela; Buch-Hansen, Hubert

    2014-01-01

    of competition regulation is heaving into sight. It sets out to explain this from the vantage point of a critical political economy perspective, which identifies the circumstances under which a crisis can result in a regulatory paradigm shift. Contrasting the current situation with the shift in EC/EU competition...

  16. Shift working and risk of lipid disorders: A cross-sectional study

    Directory of Open Access Journals (Sweden)

    Shoushtarizadeh Payman

    2006-04-01

    Full Text Available Abstract Background previous studies have indicated on association between shift work and lipid profile disturbances. Lipid profile disturbances could be due to internal desynchronization. The aim of this study was to analyze whether there is relationship between shift work and serum lipids, fasting blood glucose and hypertension. Results A total of 424 rail road workers between the ages of 21 and 64 years in this study filled out a questionnaire, and total cholesterol, triglyceride and HDL-C concentration were measured after 12-hours fasting. Association between shift work and biochemical variables and blood pressure were measured. The X2 and fisher's exact test was used for comparing the qualitative variables and for quantitative variables with normal distribution we used the parametric tests. Odds ratio (OR with the 95% confidence interval (95% CI was used for comparing the proportions of risk variables. Sub-populations in this study were consisting of 158 (37.3% shift workers and 266 (62.7% day workers. High levels of total cholesterol (> 200 mg/dl and LDL-cholesterol (> 130 mg/dl were significantly more prevalent in nearly all groups of shift workers irrespective of age. But there is no differences in the serum levels of triglyceride, HDL-C, fasting blood glucose and blood pressure between shift workers and day workers. Adjusted Odd's ratio for the effect of shift working on high serum total cholesterol and LDL-C level were 2.11(95%CI: 1.33–3.36 and 1.76(95%CI: 1.09–2.83, respectively. Conclusion This study showed that high serum total cholesterol and LDL-C level were more common in shift workers than in day workers. This finding persisted after adjustment was made for age and food type. But there was no difference in the prevalence of HDL-C, triglyceride, fasting blood glucose and hypertension between shift working and day working. It was concluded that shift work is a risk factor for lipid profile disturbances.

  17. The maturational trajectories of NREM and REM sleep durations differ across adolescence on both school-night and extended sleep

    OpenAIRE

    Feinberg, Irwin; Davis, Nicole M.; de Bie, Evan; Kevin J Grimm; Campbell, Ian G

    2011-01-01

    We recorded sleep electroencephalogram longitudinally across ages 9–18 yr in subjects sleeping at home. Recordings were made twice yearly on 4 consecutive nights: 2 nights with the subjects maintaining their ongoing school-night schedules, and 2 nights with time in bed extended to 12 h. As expected, school-night total sleep time declined with age. This decline was entirely produced by decreasing non-rapid eye movement (NREM) sleep. Rapid eye movement (REM) sleep durations increased slightly b...

  18. Metabolic impact of shift work.

    Science.gov (United States)

    Zimberg, Ioná Zalcman; Fernandes Junior, Silvio A; Crispim, Cibele Aparecida; Tufik, Sergio; de Mello, Marco Tulio

    2012-01-01

    In developing countries, shift work represents a considerable contingent workforce. Recently, studies have shown that overweight and obesity are more prevalent in shift workers than day workers. In addition, shift work has been associated with a higher propensity for the development of many metabolic disorders, such as insulin resistance, diabetes, dislipidemias and metabolic syndrome. Recent data have pointed that decrease of the sleep time, desynchronization of circadian rhythm and alteration of environmental aspects are the main factors related to such problems. Shortened or disturbed sleep is among the most common health-related effects of shift work. The plausible physiological and biological mechanisms are related to the activation of the autonomic nervous system, inflammation, changes in lipid and glucose metabolism, and related changes in the risk for atherosclerosis, metabolic syndrome, and type II diabetes. The present review will discuss the impact of shift work on obesity and metabolic disorders and how disruption of sleep and circadian misalignment may contribute to these metabolic dysfunctions.

  19. Seasonal trends and nightly fluctuations of SWIR air-glow irradiance

    Science.gov (United States)

    Dayton, David C.; Allen, Jeffrey; Nolasco, Rudolph; Gonglewski, John D.; Myers, Michael; Fertig, Gregory

    2011-11-01

    It is well known that luminance from photo-chemical reactions of hydroxyl ions in the upper atmosphere (~85 km altitude) produces a significant amount of night time radiation in the short wave infra-red (SWIR) band with wavelength between 0.9 and 1.7 μm. This air glow has been proposed as an illumination source for obtaining imagery in the dark of night. By examining short term nightly fluctuations and long term seasonal trends in the ground level irradiance we hope to determine the source reliability for night time low light surveillance and imaging.

  20. Nurses' sleep quality, work environment and quality of care in the Spanish National Health System: observational study among different shifts

    Science.gov (United States)

    Gómez-García, Teresa; Ruzafa-Martínez, María; Fuentelsaz-Gallego, Carmen; Madrid, Juan Antonio; Rol, Maria Angeles; Martínez-Madrid, María José; Moreno-Casbas, Teresa

    2016-01-01

    Objective The main objective of this study was to determine the relationship between the characteristics of nurses' work environments in hospitals in the Spanish National Health System (SNHS) with nurse reported quality of care, and how care was provided by using different shifts schemes. The study also examined the relationship between job satisfaction, burnout, sleep quality and daytime drowsiness of nurses and shift work. Methods This was a multicentre, observational, descriptive, cross-sectional study, centred on a self-administered questionnaire. The study was conducted in seven SNHS hospitals of different sizes. We recruited 635 registered nurses who worked on day, night and rotational shifts on surgical, medical and critical care units. Their average age was 41.1 years, their average work experience was 16.4 years and 90% worked full time. A descriptive and bivariate analysis was carried out to study the relationship between work environment, quality and safety care, and sleep quality of nurses working different shift patterns. Results 65.4% (410) of nurses worked on a rotating shift. The Practice Environment Scale of the Nursing Work Index classification ranked 20% (95) as favourable, showing differences in nurse manager ability, leadership and support between shifts (p=0.003). 46.6% (286) were sure that patients could manage their self-care after discharge, but there were differences between shifts (p=0.035). 33.1% (201) agreed with information being lost in the shift change, showing differences between shifts (p=0.002). The Pittsburgh Sleep Quality Index reflected an average of 6.8 (SD 3.39), with differences between shifts (p=0.017). Conclusions Nursing requires shift work, and the results showed that the rotating shift was the most common. Rotating shift nurses reported worse perception in organisational and work environmental factors. Rotating and night shift nurses were less confident about patients' competence of self-care after discharge. The

  1. Le mythe comme détour dans Twelfth Night The Myth as a Diversion in Twelfth Night

    Directory of Open Access Journals (Sweden)

    Cécile Mauré

    2009-06-01

    Full Text Available Being only rarely mentioned in the text, the myth might seem an anecdotal and trivial detail. The study of the myth of Echo and Narcissus in Twelfth Night shows us however that it is a decisive element in the reading and the understanding of the play. The references are numerous and often implicit. The characters themselves alternately play the roles of Echo and Narcissus. The play is structured as if it were a mirror in which the characters endlessly duplicate each other and echo their own words. Shakespeare plays with the different versions of the myth that he often blends with subtlety. For the sake of comedy, he dares to parody and demythologize Ovid’s story. The myth seems to divert our attention from the direction of the text but closer analysis suggests the reverse and invites us to find the meaning of the play which can be seen as a real labyrinth.

  2. Greater night-to-night variability in sleep discrepancy among older adults with a sleep complaint compared to noncomplaining older adults.

    Science.gov (United States)

    Kay, Daniel B; Dzierzewski, Joseph M; Rowe, Meredeth; McCrae, Christina S

    2013-04-01

    Research in younger adults suggests sleep discrepancy (objective/subjective measurement difference) is a consistent pattern that primarily occurs within individuals with insomnia. To examine whether older adults exhibit a similar pattern, this study compared night-to-night inconsistency in sleep discrepancy between older adults with and without sleep complaints. Older adults (N = 103; mean age = 72.81, SD = 7.12) wore an Actiwatch-L® (24 hr per day) and concurrently completed sleep diaries for 14 days. Sleep discrepancy = diary (sleep onset latency [SOL] or wake [time] after sleep onset [WASO]) - actigraphy (SOL or WASO). Both groups exhibited sleep discrepancy, but complainers exhibited significantly more night-to-night variability. Sleep discrepancy was a variable behavior that was not limited to insomnia, but instead manifested by degree throughout our older sample. Greater attention to variability in sleep research and clinical practice is warranted. PMID:23137288

  3. Shift work and subfecundity: a causal link or an artefact?

    DEFF Research Database (Denmark)

    Zhu, Jin Liang; Hjøllund, Niels Henrik Ingvar; Boggild, Henrik;

    2003-01-01

    AIMS: The Danish National Birth Cohort (DNBC) was used to examine whether shift work is associated with reduced fecundity as estimated by time to pregnancy (TTP). METHODS: From 1 March 1998 to 1 May 2000, 39 913 pregnant women were enrolled in the DNBC. Data on job characteristics and TTP (0-2, 3...... work and subfecundity. The slightly reduced fecundity among fixed evening workers and fixed night workers may be mediated by pregnancy planning bias or differential options for sexual contacts.......AIMS: The Danish National Birth Cohort (DNBC) was used to examine whether shift work is associated with reduced fecundity as estimated by time to pregnancy (TTP). METHODS: From 1 March 1998 to 1 May 2000, 39 913 pregnant women were enrolled in the DNBC. Data on job characteristics and TTP (0-2, 3......-5, 6-12, and >12 months) were used for 17 531 daytime workers and 3907 shift workers who had planned the pregnancy. Fecundity odds ratios (ORs) were calculated with 95% confidence intervals using the discrete time survival analysis techniques performed by logistic regression. An OR above 1 expresses...

  4. [Shift work and cardiometabolic risk].

    Science.gov (United States)

    Copertaro, Alfredo; Barbaresi, Mariella; Bracci, Massimo

    2009-11-01

    Shift work is frequently associated with coronary heart disease. Medical research indicate metabolic disturbance among shift workers, which is characterized by associated modifications in the concentration of serum glucose and serum lipids, hypertension and obesity, especially addominal weight. Atrasversal study has been carried out: 193 (126 females and 67 males) healthcare shift workers were compared with 221 (160 females and 61 males) day workers. Medical history, health examination including anthropometric and arterial blood pressure measurements were assessed. All participants were submitted a standardized questionnaire on health-related behaviours and biochemical determinations (fasting plasma glucose, HDL-cholesterol, triglycerides). Job seniority of shift work resulted at 13.5 +/- 8.2 among shift workers and 19.0 +/- 11.3 among day workers. Assessment of the metabolic syndrome relevance was defined according to the criterions proposed by the International Diabetes Federation. The 20% shift workers (33% males and 13% females) was affected by metabolic syndrome against 12% non shift workers (20% males and 9% females). The most frequently altered parameter, apart from metabolic syndrome, was high abdominal obesity, which occurred in 64% of the sample (70% shift workers vs 58% day workers). The results of multiple logistic regression attested the presence of a higher relative risk among shift workers regarding both the prevalence of a metabolic syndrome (OR 2,1 - 95% Cl 1.15-3.86) and the excess in abdominal obesity (OR 1.8 - 95% Cl 1.16-3.25). After adjusting confusing factors such as smoke, age, alchool, consumption, physical activity, scholastic degree, a OR 2.9 - 95%Cl 1,53-5.53 and a OR 1.9 - 95%.Cl 1.32-3.86 were confirmed. PMID:20066881

  5. Detection of Special Operations Forces Using Night Vision Devices

    Energy Technology Data Exchange (ETDEWEB)

    Smith, C.M.

    2001-10-22

    Night vision devices, such image intensifiers and infrared imagers, are readily available to a host of nations, organizations, and individuals through international commerce. Once the trademark of special operations units, these devices are widely advertised to ''turn night into day''. In truth, they cannot accomplish this formidable task, but they do offer impressive enhancement of vision in limited light scenarios through electronically generated images. Image intensifiers and infrared imagers are both electronic devices for enhancing vision in the dark. However, each is based upon a totally different physical phenomenon. Image intensifiers amplify the available light energy whereas infrared imagers detect the thermal energy radiated from all objects. Because of this, each device operates from energy which is present in a different portion of the electromagnetic spectrum. This leads to differences in the ability of each device to detect and/or identify objects. This report is a compilation of the available information on both state-of-the-art image intensifiers and infrared imagers. Image intensifiers developed in the United States, as well as some foreign made image intensifiers, are discussed. Image intensifiers are categorized according to their spectral response and sensitivity using the nomenclature of GEN I, GEN II, and GEN III. As the first generation of image intensifiers, GEN I, were large and of limited performance, this report will deal with only GEN II and GEN III equipment. Infrared imagers are generally categorized according to their spectral response, sensor materials, and related sensor operating temperature using the nomenclature Medium Wavelength Infrared (MWIR) Cooled and Long Wavelength Infrared (LWIR) Uncooled. MWIR Cooled refers to infrared imagers which operate in the 3 to 5 {micro}m wavelength electromagnetic spectral region and require either mechanical or thermoelectric coolers to keep the sensors operating at 77 K

  6. VP Anaphors and Object Shift

    DEFF Research Database (Denmark)

    Ørsnes, Bjarne

    2013-01-01

    The article discusses the placement of the VP anaphor det ‘it’ as a complement of verbs selecting VP complements in Danish. With verbs that only allow a VP complement, the VP anaphor must be in SpecCP regardless of its information structure properties. If SpecCP is occupied by an operator......, the anaphor can be in situ, but it cannot shift. With verbs that allow its VP complement to alternate with an NP complement, the VP anaphor can be in SpecCP, shifted or in situ according to the information structural properties of the anaphor. Only if SpecCP is occupied by an operator, must a topical anaphor...... be in situ. The article argues that a shifted pronominal in Danish must be categorially licensed by the verb and extends this analysis to shifting locatives. An Optimality Theory analysis is proposed that accounts for the observed facts....

  7. Battle of the Brains: Election-Night Forecasting at the Dawn of the Computer Age

    Science.gov (United States)

    Chinoy, Ira

    2010-01-01

    This dissertation examines journalists' early encounters with computers as tools for news reporting, focusing on election-night forecasting in 1952. Although election night 1952 is frequently mentioned in histories of computing and journalism as a quirky but seminal episode, it has received little scholarly attention. This dissertation asks how…

  8. Performance characterization of night vision equipment based on the triangle orientation discrimination methodology

    NARCIS (Netherlands)

    Laurent, N.; Bijl, P.; Deltel, G.

    2015-01-01

    Night vision equipment is crucial in order to accomplish supremacy and safety of the troops on the battlefield. Evidently, system integrators, ministry of defenses and end-users need access to reliable quantitative characterization of the expected field performance when using night vision equipment.

  9. 5 CFR 550.132 - Relation to overtime, night, and Sunday pay.

    Science.gov (United States)

    2010-01-01

    ...) Notwithstanding premium pay for holiday work, the number of hours of holiday work are included in determining for... REGULATIONS PAY ADMINISTRATION (GENERAL) Premium Pay Pay for Holiday Work § 550.132 Relation to overtime, night, and Sunday pay. (a) Premium pay for holiday work is in addition to overtime pay or night...

  10. 78 FR 75249 - Safety Zone: Google's Night at Sea Fireworks Display, San Francisco Bay, Alameda, CA

    Science.gov (United States)

    2013-12-11

    .... SUPPLEMENTARY INFORMATION: Table of Acronyms DHS Department of Homeland Security FR Federal Register NOAA... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone: Google's Night at Sea Fireworks Display... the breakwater in Alameda, CA in support of Google's Night at Sea Fireworks Displays on December...

  11. Measurement of Day and Night Neutrino Energy Spectra at SNO and Constraints on Neutrino Mixing Parameters

    CERN Document Server

    Ahmad, Q R; Andersen, T C; Anglin, J D; Barton, J C; Beier, E W; Bercovitch, M; Bigu, J; Biller, S D; Black, R A; Blevis, I; Boardman, R J; Boger, J; Bonvin, E; Boulay, M G; Bowler, M G; Bowles, T J; Brice, S J; Browne, M C; Bullard, T V; Buhler, G; Cameron, J; Chan, Y D; Chen, H H; Chen, M; Chen, X; Cleveland, B T; Clifford, E T H; Cowan, J H M; Cowen, D F; Cox, G A; Dai, X; Dalnoki-Veress, F; Davidson, W F; Doe, P J; Doucas, G; Dragowsky, M R; Duba, C A; Duncan, F A; Dunford, M; Dunmore, J A; Earle, E D; Elliott, S R; Evans, H C; Ewan, G T; Farine, J; Fergani, H; Ferraris, A P; Ford, R J; Formaggio, J A; Fowler, M M; Frame, K; Frank, E D; Frati, W; Gagnon, N; Germani, J V; Gil, S; Graham, K; Grant, D R; Hahn, R L; Hallin, A L; Hallman, E D; Hamer, A S; Hamian, A A; Handler, W B; Haq, R U; Hargrove, C K; Harvey, P J; Hazama, R; Heeger, K M; Heintzelman, W J; Heise, J; Helmer, R L; Hepburn, J D; Heron, H; Hewett, J L; Hime, A; Howe, M; Hykawy, J G; Isaac, M C P; Jagam, P; Jelley, N A; Jillings, C; Jonkmans, G; Kazkaz, K; Keener, P T; Klein, J R; Knox, A B; Komar, R J; Kouzes, R; Kutter, T; Kyba, C C M; Law, J; Lawson, I T; Lay, M; Lee, H W; Lesko, K T; Leslie, J R; Levine, I; Locke, W; Luoma, S; Lyon, J; Majerus, S; Mak, H B; Maneira, J; Manor, J; Marino, A D; McCauley, N; McDonald, A B; McDonald, D S; McFarlane, K; McGregor, G; Meijer-Drees, R; Miin, C; Miller, G G; Milton, G; Moffat, B A; Moorhead, M E; Nally, C W; Neubauer, M S; Newcomer, F M; Ng, H S; Noble, A J; Norman, E B; Novikov, V M; O'Neill, M; Okada, C E; Ollerhead, R W; Omori, Mamoru; Orrell, J L; Oser, S M; Poon, A W P; Radcliffe, T J; Roberge, A; Robertson, B C; Robertson, R G H; Rosendahl, S S E; Rowley, J K; Rusu, V L; Saettler, E; Schaffer, K K; Schwendener, M H; Schülke, A; Seifert, H; Shatkay, M; Simpson, J J; Sims, C J; Sinclair, D; Skensved, P; Smith, A R; Smith, M W E; Spreitzer, T; Starinsky, N; Steiger, T D; Stokstad, R G; Stonehill, L C; Storey, R S; Sur, B; Tafirout, R; Tagg, N; Tanner, N W; Taplin, R K; Thorman, M; Thornewell, P M; Trent, P T; Tserkovnyak, Y; Van Berg, R; Van de Water, R G; Virtue, C J; Waltham, C E; Wang, J X; Wark, D L; West, N; Wilhelmy, J B; Wilkerson, J F; Wilson, J R; Wittich, P; Wouters, J M; Yeh, M

    2002-01-01

    The Sudbury Neutrino Observatory (SNO) has measured day and night solar neutrino energy spectra and rates. For charged current events, assuming an undistorted $^8$B spectrum, the night minus day rate is $14.0% \\pm 6.3% ^{+1.5}_{-1.4}%$ of the average rate. If the total flux of active neutrinos is additionally constrained to have no asymmetry, the $\

  12. Meetings without Dialogue: A Study of ESL Parent-Teacher Interactions at Secondary School Parents' Nights

    Science.gov (United States)

    Guo, Yan

    2010-01-01

    Research in home-school communication has incorporated little, to date, about participation by English as a second language (ESL) parents. This article examines the communication processes between recent Chinese immigrant parents and Canadian teachers at secondary school Parents' Nights. Drawing from observations of three annual Parents' Nights,…

  13. Is blood pressure during the night more predictive of cardiovascular outcome than during the day?

    DEFF Research Database (Denmark)

    Li, Yan; Boggia, Jose; Thijs, Lutgarde;

    2008-01-01

    The objective of this study was to investigate the prognostic significance of the ambulatory blood pressure (BP) during night and day and of the night-to-day BP ratio (NDR). We studied 7458 participants (mean age 56.8 years; 45.8% women) enrolled in the International Database on Ambulatory BP...

  14. Performance characterization of night vision equipment based on Triangle Orientation Discrimination (TOD) methodology

    NARCIS (Netherlands)

    Laurent, N.; Lejard, C.; Deltel, G.; Bijl, P.

    2013-01-01

    Night vision equipment is crucial in order to accomplish supremacy and safety of the troops on the battlefield. Evidently, system integrators, MODs and end-users need access to reliable quantitative characterization of the expected field performance when using night vision equipment. The Image Inten

  15. Binge eating disorder and night eating syndrome in adults with type 2 diabetes

    Science.gov (United States)

    To determine the prevalence of binge eating disorder (BED) and night eating syndrome (NES) among applicants to the Look AHEAD (Action for Health in Diabetes) study. The Eating Disorders Examination-Questionnaire (EDE-Q) and the Night Eating Questionnaire (NEQ) were used to screen patients. Phone int...

  16. Grain yield and quality responses of tropical hybrid rice to high night-time temperature

    NARCIS (Netherlands)

    Shi, W.; Yin, X.; Struik, P.C.; Xie, F.; Schmidt, R.C.; Jagadish, K.S.V.

    2016-01-01

    High temperature has a pronounced effect on grain yield and quality in rice. Climate change has increased night temperature more than day temperature in many parts of the world. How rice responds to high night-time temperature (HNT) is largely unknown. This study presents the first effort to assess

  17. Semantic Shift in Plant Names

    OpenAIRE

    DOSKOČILOVÁ, Iveta

    2014-01-01

    The aim of the present work is to identify and list English plant names coined by semantic shift, namely by metaphor, metonymy or synecdoche, and to carry out a detailed categorisation of individual semantic categories based on different tendencies within them and interpretation of the results. The theoretical part of my work focuses on different approaches to semantic shift and its categories. It is followed by the practical part which deals individually with metaphor, metonymy and synecdoch...

  18. Recommendations for NRC policy on shift scheduling and overtime at nuclear power plants

    International Nuclear Information System (INIS)

    This report contains the Pacific Northwest Laboratory's (PNL's) recommendations to the US Nuclear Regulatory Commission (NRC) for an NRC policy on shift scheduling and hours of work (including overtime) for control room operators and other safety-related personnel in nuclear power plants. First, it is recommended that NRC make three additions to its present policy on overtime: (1) limit personnel to 112 hours of work in a 14-day period, 192 hours in 28 days, and 2260 hours in one year; exceeding these limits would require plant manager approval; (2) add a requirement that licensees obtain approval from NRC if plant personnel are expected to exceed 72 hours of work in a 7-day period, 132 hours in 14 days, 228 hours in 28 days, and 2300 hours in one year; and (3) make the policy a requirement, rather than a nonbinding recommendation. Second, it is recommended that licensees be required to obtain NRC approval to adopt a routine 12-hour/day shift schedule. Third, it is recommended that NRC add several nonbinding recommendations concerning routine 8-hour/day schedules. Finally, because additional data can strengthen the basis for future NRC policy on overtime, five methods are suggested for collecting data on overtime and its effects. 44 refs., 10 tabs

  19. Recommendations for NRC policy on shift scheduling and overtime at nuclear power plants

    Energy Technology Data Exchange (ETDEWEB)

    Lewis, P.M.

    1985-07-01

    This report contains the Pacific Northwest Laboratory's (PNL's) recommendations to the US Nuclear Regulatory Commission (NRC) for an NRC policy on shift scheduling and hours of work (including overtime) for control room operators and other safety-related personnel in nuclear power plants. First, it is recommended that NRC make three additions to its present policy on overtime: (1) limit personnel to 112 hours of work in a 14-day period, 192 hours in 28 days, and 2260 hours in one year; exceeding these limits would require plant manager approval; (2) add a requirement that licensees obtain approval from NRC if plant personnel are expected to exceed 72 hours of work in a 7-day period, 132 hours in 14 days, 228 hours in 28 days, and 2300 hours in one year; and (3) make the policy a requirement, rather than a nonbinding recommendation. Second, it is recommended that licensees be required to obtain NRC approval to adopt a routine 12-hour/day shift schedule. Third, it is recommended that NRC add several nonbinding recommendations concerning routine 8-hour/day schedules. Finally, because additional data can strengthen the basis for future NRC policy on overtime, five methods are suggested for collecting data on overtime and its effects. 44 refs., 10 tabs.

  20. Shift work in nurses: contribution of phenotypes and genotypes to adaptation.

    Directory of Open Access Journals (Sweden)

    Karen L Gamble

    Full Text Available BACKGROUND: Daily cycles of sleep/wake, hormones, and physiological processes are often misaligned with behavioral patterns during shift work, leading to an increased risk of developing cardiovascular/metabolic/gastrointestinal disorders, some types of cancer, and mental disorders including depression and anxiety. It is unclear how sleep timing, chronotype, and circadian clock gene variation contribute to adaptation to shift work. METHODS: Newly defined sleep strategies, chronotype, and genotype for polymorphisms in circadian clock genes were assessed in 388 hospital day- and night-shift nurses. RESULTS: Night-shift nurses who used sleep deprivation as a means to switch to and from diurnal sleep on work days (∼25% were the most poorly adapted to their work schedule. Chronotype also influenced efficacy of adaptation. In addition, polymorphisms in CLOCK, NPAS2, PER2, and PER3 were significantly associated with outcomes such as alcohol/caffeine consumption and sleepiness, as well as sleep phase, inertia and duration in both single- and multi-locus models. Many of these results were specific to shift type suggesting an interaction between genotype and environment (in this case, shift work. CONCLUSIONS: Sleep strategy, chronotype, and genotype contribute to the adaptation of the circadian system to an environment that switches frequently and/or irregularly between different schedules of the light-dark cycle and social/workplace time. This study of shift work nurses illustrates how an environmental "stress" to the temporal organization of physiology and metabolism can have behavioral and health-related consequences. Because nurses are a key component of health care, these findings could have important implications for health-care policy.

  1. The Concept of Love in Dostoyevsky's White Nights

    Directory of Open Access Journals (Sweden)

    Mohammad Yousefvand

    2015-07-01

    Full Text Available Love is a phenomenon we are involved with in our life. The concept of love has been immensely discussed and challenged by philosophers and psychologists all throughout the history because of its salient and effective role in our individual and social lives. Self-love and altruistic love, two main types of love, have been repeatedly reflected in psychologists' works; self-love refers to a kind of love which is based on psychological egoism; on the other hand, altruistic love is conceived of as a sort of love which is principally based on selflessness, caring, respect, and sacrifice. “White Nights” is a short story by Fyodor Dostoyevsky which seemingly has an altruistic view toward love; it sounds that Dostoyevsky has made a purposeful attempt to praise such altruistic love in the story. Thus, it has been tried to delve into the concept of love manifested in White Nights. This paper is divided into two parts; in the first part, a theoretical framework entailing definitions of love and its types is depicted; in the second part, an account of how love is emerged in the story will be explained. At last, this paper substantiates that altruistic love is represented and admired in this story and is preferred to the other types of love.Keywords: The Concept of Love, Family Resemblance, Types of Love, Triangular Theory of Love, Self-love, Altruistic Love

  2. Night sky luminance under clear sky conditions: Theory vs. experiment

    Science.gov (United States)

    Kocifaj, Miroslav

    2014-05-01

    Sky glow is caused by both natural phenomena and factors of anthropogenic origin, and of the latter ground-based light sources are the most important contributors for they emit the spatially linked spectral radiant intensity distribution of artificial light sources, which are further modulated by local atmospheric optics and perceived as the diffuse light of a night sky. In other words, sky glow is closely related to a city's shape and pattern of luminaire distribution, in practical effect an almost arbitrary deployment of random orientation of heterogeneous electrical light sources. Thus the luminance gradation function measured in a suburban zone or near the edges of a city is linked to the City Pattern or vice versa. It is shown that clear sky luminance/radiance data recorded in an urban area can be used to retrieve the bulk luminous/radiant intensity distribution if some a-priori information on atmospheric aerosols is available. For instance, the single scattering albedo of aerosol particles is required under low turbidity conditions, as demonstrated on a targeted experiment in the city of Frýdek-Mistek. One of the main advantages of the retrieval method presented in this paper is that the single scattering approximation is satisfactorily accurate in characterizing the light field near the ground because the dominant contribution to the sky glow has originated from beams propagated along short optical paths.

  3. All-CMOS night vision viewer with integrated microdisplay

    Science.gov (United States)

    Goosen, Marius E.; Venter, Petrus J.; du Plessis, Monuko; Faure, Nicolaas M.; Janse van Rensburg, Christo; Rademeyer, Pieter

    2014-02-01

    The unrivalled integration potential of CMOS has made it the dominant technology for digital integrated circuits. With the advent of visible light emission from silicon through hot carrier electroluminescence, several applications arose, all of which rely upon the advantages of mature CMOS technologies for a competitive edge in a very active and attractive market. In this paper we present a low-cost night vision viewer which employs only standard CMOS technologies. A commercial CMOS imager is utilized for near infrared image capturing with a 128x96 pixel all-CMOS microdisplay implemented to convey the image to the user. The display is implemented in a standard 0.35 μm CMOS process, with no process alterations or post processing. The display features a 25 μm pixel pitch and a 3.2 mm x 2.4 mm active area, which through magnification presents the virtual image to the user equivalent of a 19-inch display viewed from a distance of 3 meters. This work represents the first application of a CMOS microdisplay in a low-cost consumer product.

  4. Accessing Creativity: Jungian Night Sea Journeys, Wandering Minds, and Chaos.

    Science.gov (United States)

    Rosen, Diane

    2016-01-01

    NDS theory has been meaningfully applied to the dynamics of creativity and psychology. These complex systems have much in common, including a broad definition of "product" as new order emerging from disorder, a new whole (etymologically, 'health') out of disintegration or destabilization. From a nonlinear dynamical systems perspective, this paper explores the far-from-equilibrium zone of creative incubation: first in the Jungian night sea journey, a primordial myth of psychological and creative transformation; then in the neuroscience of mind wandering, the well-spring of creative ideation within the larger neural matrix. Finally, chaos theory grounds the elusive subject of creativity, modeling chaotic generation of idea elements that tend toward strange attractors, combine unpredictably, and produce change by means of tension between opposites, particularly notes consciousness (light) and the poetic unconscious (darkness). Examples from my own artwork illustrate this dialectical process. Considered together, the unconscious mythic sea journey, the unknowing wandering mind, and the generative paradigm of deterministic chaos suggest conditions that facilitate creativity across disciplines, providing fresh indications that the darkness of the unknown or irrational is, paradoxically, the illuminative source and strength of creativity. PMID:26639923

  5. "Travelers In The Night" in the Old and New Media

    Science.gov (United States)

    Grauer, Albert D.

    2015-11-01

    "Travelers in the Night" is a series of 2 minute audio programs based on current research in astronomy and the space sciences.After more than a year of submitting “Travelers In The Night” 2 minute audio pieces to NPR and Community Radio stations with limited success, a parallel effort was initiated by posting the pieces as audio podcasts on Spreaker.com and iTunes.The classic media dispenses programming whose content and schedule is determined by editors and station managers. Riding the wave of new technology, people from every demographic group across the globe are selecting what, when, and how they receive information and entertainment. This change is significant with the Pew Research Center reporting that currently more than 60% of Facebook and Twitter users now get their news and/or links to stories from these sources. What remains constant is the public’s interest in astronomy and space.This poster presents relevant statistics and a discussion of the initial results of these two parallel efforts.

  6. Prevalence of night eating in obese and nonobese twins.

    Science.gov (United States)

    Tholin, Sanna; Lindroos, Annakarin; Tynelius, Per; Akerstedt, Torbjörn; Stunkard, Albert J; Bulik, Cynthia M; Rasmussen, Finn

    2009-05-01

    The aim of this study was to assess the prevalence of night eating (NE) and associated symptoms in a population-based sample of Swedish twins. A total of 21,741 individuals aged 20-47 years completed a questionnaire in 2005/2006. NE was defined as >/=25% of daily food intake after the evening meal and/or awakening at least once per week with eating episodes. The prevalence of NE was 4.6% in men and 3.4% in women. Among obese men and women, the prevalence was 8.4 and 7.5%, respectively. Men and women with NE had 3.4 and 3.6 times higher risk of binge eating compared to individuals without NE. The risk of sleep-related problems was 1.6-3.4 times higher in men and 2.5-3.3 times higher in women with NE compared to those without NE. This epidemiological study has estimated the prevalence of NE in a twin population. It revealed that NE is 2.5 and 2.8 times more common in obese men and women compared to normal weight men and women. Furthermore that NE is associated with binge eating and sleep-related problems. PMID:19396084

  7. A magic night in the footsteps of scientists

    CERN Multimedia

    CERN Bulletin

    2012-01-01

    CERN will be welcoming young people into the control rooms of the LHC and its experiments during the European Researchers' Night, which runs from 6 p.m. to midnight on 28 September.   To give young people a taste for science, nothing beats a chance to speak with actual scientists. That is one of the objectives of the “European Researchers’ Night”, when scientists across Europe will open the doors of their laboratories to the general public. This year's event, planned for 28 September, will see CERN once again opening the control rooms of the LHC and its experiments to young people aged 13 to 18 years. From 6 p.m. to midnight, they will be able to spend two to three hours in a control room of the LHC or one of its experiments (ALICE, ATLAS, CMS and TOTEM, and LHCb). In addition to the visit, specific activities have been organised to give the young visitors an insight into how the accelerator and detectors function and what kind of research is bei...

  8. Accessing Creativity: Jungian Night Sea Journeys, Wandering Minds, and Chaos.

    Science.gov (United States)

    Rosen, Diane

    2016-01-01

    NDS theory has been meaningfully applied to the dynamics of creativity and psychology. These complex systems have much in common, including a broad definition of "product" as new order emerging from disorder, a new whole (etymologically, 'health') out of disintegration or destabilization. From a nonlinear dynamical systems perspective, this paper explores the far-from-equilibrium zone of creative incubation: first in the Jungian night sea journey, a primordial myth of psychological and creative transformation; then in the neuroscience of mind wandering, the well-spring of creative ideation within the larger neural matrix. Finally, chaos theory grounds the elusive subject of creativity, modeling chaotic generation of idea elements that tend toward strange attractors, combine unpredictably, and produce change by means of tension between opposites, particularly notes consciousness (light) and the poetic unconscious (darkness). Examples from my own artwork illustrate this dialectical process. Considered together, the unconscious mythic sea journey, the unknowing wandering mind, and the generative paradigm of deterministic chaos suggest conditions that facilitate creativity across disciplines, providing fresh indications that the darkness of the unknown or irrational is, paradoxically, the illuminative source and strength of creativity.

  9. Motorway closure near the airport for one night

    CERN Multimedia

    2007-01-01

    In the framework of the third phase of maintenance work on the Geneva motorway bypass, the airport section will be closed to traffic in the "France" direction from 8.30 p.m. to 5.00 a.m. during the night of Monday 2nd July to Tuesday 3rd July. Diversion signs indicating an alternative route will be erected. The work in question may be postponed in the event of bad weather conditions or if the state of progress of the work so dictates. The exact date will be therefore confirmed the day before on the following radio stations: RSR 91.2 FM (Geneva) and 94.9 FM (Leman basin), Radio Lac 91.8 FM (Geneva), 93.3 FM (Nyon) and 95.6 FM (Lausanne). The relevant information can also be obtained by dialling 163. We should like to you in advance for your understanding. For further information: Tel. 163. The Project Management
State of Geneva
Department of Construction and 
Information Technologies
Civil Engineering Department

  10. Emotional eating moderates the relationship of night eating with binge eating and body mass.

    Science.gov (United States)

    Meule, Adrian; Allison, Kelly C; Platte, Petra

    2014-03-01

    Night eating syndrome is marked by substantial evening or nocturnal food intake, insomnia, morning anorexia, and depressed mood. Night eating severity has been positively associated with body mass index (BMI), binge eating frequency, and emotional eating tendencies. We conducted an online questionnaire study among students (N=729) and explored possible interactive effects between those variables. Night eating severity, binge eating frequency, BMI and emotional eating were all positively correlated with each other. Regression analyses showed that night eating severity was particularly related to more frequent binge episodes and higher BMI at high levels of emotional eating but unrelated to those variables at low levels of emotional eating. Thus, eating as a means of emotion regulation appears to be an important moderator of the relationship between night eating and both binge eating and BMI. PMID:24293184

  11. Study of Night Ventilation Efficiency in Urban Environment: Technical and Legal Aspects

    Science.gov (United States)

    Maragogiannis, Konstantinos; Kolokotsa, Dionysia; Maria, Efpraxia-Aithra

    2011-01-01

    Night Ventilation is a critical technique of passive cooling, as it combines a significant decrease of cooling demand and improvement of thermal comfort and indoor air quality. The aim of the present paper is to study the technical and legal aspects of night ventilation in urban climatic conditions. The technical part examines the efficiency of night ventilation techniques for urban residential buildings. Moreover, the influence of urban heat island on the night ventilation effectiveness is studied. Urban heat provokes the degradation of urban air quality and causes changes in the urban area microclimate which reduce the night ventilation effectiveness as a passive cooling technique. Moreover, this paper studies the legal framework of energy efficiency in buildings and pinpoints the institutional deficiencies of the existing regulation regarding energy efficiency and passive cooling techniques

  12. Graduated Driver Licensing Night Driving Restrictions and Drivers Aged 16 or 17 Years Involved in Fatal Night Crashes - United States, 2009-2014.

    Science.gov (United States)

    Shults, Ruth A; Williams, Allan F

    2016-01-01

    Fatal crash risk is higher at night for all drivers, but especially for young, inexperienced drivers (1). To help address the increased crash risk for beginner teen drivers, 49 states and the District of Columbia include a night driving restriction (NDR) in their Graduated Driver Licensing (GDL) system. NDRs have been shown to reduce crashes among newly licensed teens, with higher reductions associated with NDRs starting at 10:00 p.m. or earlier (2-3). However, in 23 states and the District of Columbia, NDRs begin at 12:00 a.m. or later, times when most teen drivers subject to GDL are not driving. CDC analyzed 2009-2014 national and state-level data from the Fatality Analysis Reporting System (FARS) to determine the proportion of drivers aged 16 or 17 years involved in fatal crashes who crashed at night (9:00 p.m.-5:59 a.m.) and the proportion of these drivers who crashed before 12:00 a.m. Nationwide, among 6,104 drivers aged 16 or 17 years involved in fatal crashes during 2009-2014, 1,865 (31%) were involved in night crashes. Among drivers involved in night crashes, 1,054 (57%) crashed before 12:00 a.m. State-level analyses revealed an approximately twofold variation among states in both the proportions of drivers aged 16 or 17 years involved in fatal crashes that occurred at night and the proportions of night fatal crash involvements that occurred before 12:00 a.m. Because nearly all of the night driving trips taken by drivers aged 16 or 17 years end before 12:00 a.m., NDRs beginning at 12:00 a.m. or later provide minimal protection. States could consider updating their NDR coverage to include earlier nighttime hours. This descriptive report summarizes the characteristics of NDRs, estimates the extent to which drivers aged 16 or 17 years drive at night, and describes their involvement in fatal nighttime crashes during 2009-2014. The effects of NDRs on crashes were not evaluated because of the small state-level sample sizes during the 6-year study period. PMID

  13. SAT in shift manager training

    International Nuclear Information System (INIS)

    EDF has improved the organization of the operation shift teams with the replacement of shift supervisor in shift manager function. The shift manager is not only responsible for tasks associated to plant operation (production), but he is also responsible for safety of these tasks and for management of shift team members. A job analysis of this new job position has been performed in order to design the training programme. It resulted in a 10-month training programme that includes 8 weeks in safety-related topics and 12 weeks in soft-skills related topics. The safety related training courses are mandatory, the other courses are optional courses depending on individual trainee needs. The training also includes the development of management competencies. During the 10 month period, each trainee develops an individual project that is evaluated by NPP manager. As well, as group project is undertaken by the trainees and overseen by a steering committee. The steering committee participates in the evaluation process and provides operational experience feedback to the trainee groups and to the overall programme

  14. The O2 night airglow in Venus atmosphere from VIRTIS VEX measurements: local time and temporal variation

    Science.gov (United States)

    Zasova, Ludmila; Drossart, Pierre; Piccioni, Giuseppe; Migliorini, Alessandra; Shakun, Alexey; Altieri, Francesca; Gorinov, Dmitry

    Observation of the O2 1.27 µm airglow intensity distribution on the night side of Venus is one of the methods of study of the circulation in upper mesosphere 90-100 km. VIRTIS-M on board Venus Express made these observations in nadir and limb modes in Southern and Northern hemispheres respectively. To avoid high noisy data we use for analysis only those, obtained with exposure > 3 s. It was found that intensity of emission decreases to poles and to terminators in both hemispheres which gives evidence for existence of SS-AS circulation with transport of the air masses through poles and terminators with ascending/descending flows at SS/AS areas. Asymmetry of distribution of intensity of airglow is observed in both hemispheres. Global map for southern hemisphere (from nadir data) has good statistics at φ > 10-20°S and pretty poor at lower latitudes. Maximum emission was found shifted from midnight by 1 - 2 hours to the evening (22-23h) and deep minimum of emission is found at LT=2-4 h at φ > 20°S. This asymmetry is extended up to equatorial region, however statistic is poor there. No evident indication for existence of the Retrograde Zonal Superrotation (RZS) is found: maximum emission in this case, which is resulting from downwards flow, should be shifted to the morning. VIRTIS limb observations cover the low northern latitudes and they are more sparse at higher latitudes. Intensity of airglow at φ = 0 - 20° N shows wide maximum, which is shifted by 1- 2 h from midnight to morning terminator. This obviously indicates that observed O2 night glow distribution in low North latitudes is explained by a superposition of SS-AS flow and RZS circulation at 95-100 km. This behavior is similar to the NO intensity distribution, obtained by SPICAV. Temporal wariation was found at low latitudes of the Northern hemisphere: during 820 days observations three maxima were observed separated by 150 - 200 days approximately.

  15. Elevated night-time temperatures increase growth in seedlings of two tropical pioneer tree species.

    Science.gov (United States)

    Cheesman, Alexander W; Winter, Klaus

    2013-03-01

    Increased night-time temperatures, through their influence on dark respiration, have been implicated as a reason behind decreasing growth rates in tropical trees in the face of contemporary climate change. Seedlings of two neo-tropical tree species (Ficus insipida and Ochroma pyramidale) were grown in controlled-environment chambers at a constant daytime temperature (33°C) and a range of increasing night-time temperatures (22, 25, 28, 31°C) for between 39 d and 54 d. Temperature regimes were selected to represent a realistic baseline condition for lowland Panama, and a rise in night-time temperatures far in excess of those predicted for Central America in the coming decades. Experiments were complemented by an outdoor open-top chamber study in which night-time temperatures were elevated by 2.4°C above ambient. Increasing night-time temperatures resulted in > 2-fold increase in biomass accumulation in growth-chamber studies despite an increase in leaf-level dark respiration. Similar trends were seen in open-top chambers, in which elevated night-time temperatures resulted in stimulation of growth. These findings challenge simplistic considerations of photosynthesis-directed growth, highlighting the role of temperature-dependent night-time processes, including respiration and leaf development as drivers of plant performance in the tropics. PMID:23278464

  16. Sleep disturbances due to exposure to tone pulses throughout the night.

    Science.gov (United States)

    Nakagawa, Y

    1987-10-01

    Sleep electroencephalograms (EEGs) and subjective reports data were obtained from six subjects (male college students) during 2 nights of baseline observation and 5 experimental nights of exposure to a 90-100 dB, 25 ms, 1,000 c/s tone pulse with various interstimulus intervals. The first of the 5 experimental nights started with an intertone interval of 80 s. On each of the following 4 nights, the intertone interval was fixed at 40-, 10-, 2.5-, or 1-s intervals, respectively. With the intensification of noise stimulus by shortening the intervals of tone pulses, a progressive disruption of nightly EEG sleep patterns was observed as follows: (a) increased frequency of awakenings and sleep stage changes during the night, (b) prolonged sleep latency, and (c) increased percentage of time spent in stage 1 sleep. However, total sleep time, REM latency, inter-REM intervals, and the percentages of time in stages 2, 3, 4, and REM sleep did not change significantly. The degree of subjective sleep disturbance was highly associated with objective measures of nightly EEG sleep patterns. PMID:3685754

  17. Electrically assisted water shift reaction

    Energy Technology Data Exchange (ETDEWEB)

    Czernichowski, A. [Universite d`Orleans (France); Meguernes, K. [Universite de Tizi-Ouzou (Algeria)

    1995-07-01

    GlidArc-type plasma assisted water shift process of CO to H{sub 2} can be performed at atmospheric pressure without any solid catalyst and at low ({le} 415{degrees}C) temperatures in a bench-scale 1.5 kW, 1.35 l reactor with 6 knife-shaped steel electrodes for the space velocity of the order of 1000 h{sup -1}. Some 18 to 45% of CO-to-H{sub 2} shift rates are obtained for initial H{sub 2}O/CO = 0.93 to 2.7 mol/mol inputs.

  18. The shifting foundations of nursing.

    Science.gov (United States)

    Law, Kate; Aranda, Kay

    2010-08-01

    In this paper we argue that the concerns generated by the development of Foundation Degrees and the Assistant and Associate Practitioner roles have rekindled some of the unresolved debates regarding the status and identity of nursing and nurses. Through the application of the sociological theories of professionalisation and nostalgia we have identified the shifting and unresolved nature of nursing. We argue that these theories continue to have resonance in the current climate of change and 'upskilling' of the health care workforce and argue, that the shifts illuminated are perhaps so significant as to demonstrate that we have entered a post-nursing era.

  19. Night sky photometry and spectroscopy performed at the Vienna University Observatory

    OpenAIRE

    Puschnig, Johannes; Posch, Thomas; Uttenthaler, Stefan

    2013-01-01

    We present night sky brightness measurements performed at the Vienna University Observatory and at the Leopold-Figl-Observatorium fuer Astrophysik, which is located about 35km to the southwest of Vienna. The measurements have been performed with Sky Quality Meters made by Unihedron. They cover a time span of roughly one year and have been carried out every night, yielding a night sky brightness value every 7 seconds and thus delivering a large amount of data. In this paper, the level of light...

  20. Das Ende der Nacht [The End of the Night (2nd enlarged ed.)

    Science.gov (United States)

    Posch, Thomas; Hölker, Franz; Uhlmann, Thomas; Freyhoff, Anja

    2013-09-01

    We provide provide an overview of the history of lighting and of the problems arising from artificial lighting. The book covers the following topics: A brief history of light (ch. 1); night and light in cultural history (ch. 2); light pollution in central Europe (ch. 3); Moths and artificial lights (ch. 4); Artificial lighting and birds (ch. 5); Ocean turtles as victims of beach lighting (ch. 6); Moon light as a zeitgeber for the marine fauna (ch. 7); the influence of artificial light at night on freshwater ecology (ch. 8); artificial light and human health (ch. 9); the loss of the night in a 24 hours society (ch. 10).

  1. Night-Time Highway Construction or Maintenance/Upgrading Works: An Analysis

    Directory of Open Access Journals (Sweden)

    Ab Wahid A.M.

    2014-01-01

    Full Text Available This paper presents the analysis of interview sessions conducted with the general objective of studying night-time highway construction or maintenance/upgrading works. This includes any work; construction, maintenance or upgrading, that involves the closure of highway lanes and traffic mitigation. Such works might be disadvantageous to be conducted during daytime, thus requiring them to be conducted at night. Data were collected by conducting interviews to relevant industry players with the objective of identifying reasons for such works to be conducted at night. The answers obtained were the gathered and the most famous themes are selected.

  2. Day-night variation in heart rate variability changes induced by endotoxaemia in healthy volunteers

    DEFF Research Database (Denmark)

    Alamili, M.; Rosenberg, J; Gögenur, I

    2015-01-01

    /night variation in endotoxaemia-induced changes in HRV. METHODS: A randomized, crossover study with 12 healthy men (age 18-31) was conducted. Endotoxaemia were induced by lipopolysaccharide (LPS) endotoxin 0.3 ng/kg b.w. in two visits (day visit and night visit). At the day visit, endotoxaemia were induced at 12...... at both night and day resulted in a significant depression in HRV parameters high-frequency power (HF), low-frequency power (LF), standard deviation of normal-to-normal (NN) intervals, root mean square of successive differences and proportion of NN50 divided by total number of NNs (P

  3. Dark Skies Awareness through the GLOBE at Night Citizen-Science Campaign

    Science.gov (United States)

    Walker, C. E.

    2011-10-01

    The emphasis in the international citizen-science, star-hunting campaign, GLOBE at Night, is in bringing awareness to the public on issues of light pollution. Light pollution threatens not only observatory sites and our "right to starlight", but can affect energy consumption, wildlife and health. GLOBE at Night has successfully reached a few hundred thousand citizen-scientists during the annual 2-week campaign over the past 6 years. Provided is an overview, update and discussion of what steps can be taken to improve programs like GLOBE at Night.

  4. Sleep-Related Eating Disorder: A Case Report of a Progressed Night Eating Syndrome

    OpenAIRE

    Sayed Shahabuddin Hoseini; Zhamak Khorgami; Ahmad Reza Dehpour; Nasrin Shoar; Mohammad Naderan; Saeed Shoar

    2012-01-01

    Night eating syndrome is a common disorder in eating behaviors that occurs in close relation to the night time sleep cycle. Although eating disorders are common in society, night eating syndrome has been left neglected by health care professionals. In this report we present a case of eating disorder that exhibits some novel features of night eating syndrome. Our case was a progressed type of eating disorder which may increase awareness among physicians about sleep-related eating disorders.

  5. The Use of Night Orthoses in Cerebral Palsy Treatment: Sleep Disturbance in Children and Parental Burden or Not?

    Science.gov (United States)

    Mol, E. M.; Monbaliu, E.; Ven, M.; Vergote, M.; Prinzie, P.

    2012-01-01

    In this study, we investigated whether (1) children with cerebral palsy (CP) using night orthoses experience more sleep disturbance than those not using night orthoses, (2) parental personality is related to the experienced parental burden of night orthoses, and (3) parental sense of competence in the parenting role mediates the relation between…

  6. Philippine Volcano Roars,Turns Day to Night

    Institute of Scientific and Technical Information of China (English)

    Enriquede; Castro; 马贵根

    2000-01-01

    本文出现在2000年2月29日的Internet上。文字生动,描写具体,读者有亲临现场之感。菲律宾中部著名的马荣火山每次爆发都会持续两个月左右。有些像小轿车一样大的火山石散落在路旁,甚至在几天之后,其内层仍十分炙热。石缝中不断散发出夹杂浓烈的硫磺气味的烟雾。下列描写让读者有亲临现场的感觉: The 8, 000-foot high volcano spat out tons of burning rocks called "volcanic bombs”. …at about 2 p.m.it was no longer day but already night because of the ashfalls. …90 percent of his town was covered by at least two inches of ash. …thousands more terrified families poured into congested(拥挤的)evacua-tion centers. 世界气象专家认为,马荣火山爆发的影响不仅仅局限于菲律宾部分地区。他们认为:如果火山灰继续积聚于大气顶层,它们将会形成一层遮盖地球表面的灰幕,阻隔部分抵达地球的太阳热量,全球的气温可能因此下降。1991年菲律宾皮纳图博火山爆发造成800多人丧生,数千人被迫迁移。全球气候也受到影响,1992年的全球气温比以往有所下降。当年皮纳图博火山喷出的砂石和火山灰直冲2万米的天空,而这次马荣火山的喷发高度是13000米,虽然及不上上次威力大,但它对降低气温也会产生影响。

  7. Leadership Shifts in Changing Field

    Science.gov (United States)

    Zubrzycki, Jaclyn

    2013-01-01

    As groups representing local and state education players struggle to remain relevant in a policy conversation often dominated by foundations, think tanks, new advocacy groups, and political and business figures, a shift in leadership has been under way at major associations. Most of the changes have come as part of the natural churn; former…

  8. The Shift Needed for Sustainability

    Science.gov (United States)

    Smith, Peter A. C.; Sharicz, Carol

    2011-01-01

    Purpose: The purpose of this action research is to begin to assess to what extent organizations have in practice begun to make the shift towards triple bottom line (TBL) sustainability. Design/methodology/approach: A definition of TBL sustainability is provided, and key elements of TBL sustainability considered necessary to success are identified…

  9. Magnetic shift of magic nuclei

    International Nuclear Information System (INIS)

    The shell effect of nuclei in strong magnetic fields associated with magnetars' is considered within the shell model. It is demonstrated that the magnetic field gives rise to a change of the phase in shell-oscillations of nuclear masses. The nuclear magic numbers of the iron region are shifted significantly towards smaller mass numbers. (author)

  10. Size-Dependent Raman Shifts for nanocrystals.

    Science.gov (United States)

    Gao, Yukun; Zhao, Xinmei; Yin, Penggang; Gao, Faming

    2016-04-22

    Raman spectroscopy is a very sensitive tool for probing semiconductor nanocrystals. The underlying mechanism behind the size-dependent Raman shifts is still quite controversial. Here we offer a new theoretical method for the quantum confinement effects on the Raman spectra of semiconductor nanocrystals. We propose that the shift of Raman spectra in nanocrystals can result from two overlapping effects: the quantum effect shift and surface effect shift. The quantum effect shift is extracted from an extended Kubo formula, the surface effect shift is determined via the first principles calculations. Fairly good prediction of Raman shifts can be obtained without the use of any adjustable parameter. Closer analysis shows that the size-dependent Raman shifts in Si nanocrystals mainly result from the quantum effect shifts. For nanodiamond, the proportion of surface effect shift in Raman shift is up to about 40%. Such model can also provide a good baseline for using Raman spectroscopy as a tool to measure size.

  11. Depression, night terrors, and insomnia associated with long-term intrathecal clonidine therapy.

    Science.gov (United States)

    Bevacqua, Brian K; Fattouh, Maher; Backonja, Misha

    2007-03-01

    Intraspinal clonidine is an effective adjunct to intrathecal/epidural opioid administration. We report a case of neuropathic pain treated with intraspinal analgesics in which depression, insomnia, and night terrors developed in association with intraspinal clonidine. PMID:17305677

  12. Siim Nestor soovitab : Tallinn Doom Night vol.1. Odessa Pop / Siim Nestor

    Index Scriptorium Estoniae

    Nestor, Siim, 1974-

    2006-01-01

    Soome doom-metal ansambel Reverend Bizarre üritusel "Tallinn Doom Night vol.1" 8. dets. klubis Rockstar's. Indipoppi viljelev Rootsi duo My Darling Yoy! üritusel "Odessa Pop" 9. dets. Tallinnas klubis KuKu

  13. The relation between residential property and its surroundings and day- and night-time residential burglary

    NARCIS (Netherlands)

    Montoya, Lorena; Junger, Marianne; Ongena, Yfke

    2016-01-01

    This article examines how residential property and its surroundings influence day- and night-time residential burglary. Crime Prevention Through Environmental Design (CPTED) principles of territoriality, surveillance, access control, target hardening, image maintenance, and activity support underpin

  14. Effects of organochlorine pollutants on black-crowned night herons in the Pacific Northwest

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — A plan to determine the effects of organochlorine pollutants on blackcrowned night herons nesting in the Pacific Northwest, and to determine the wintering...

  15. Climatic potential for passive cooling of buildings by night-time ventilation in Europe

    DEFF Research Database (Denmark)

    Artmann, Nikolai; Manz, H.; Heiselberg, Per

    2006-01-01

    Due to an overall trend towards less heating and more cooling demands in buildings in many European countries over the last few decades, passive cooling by night-time ventilation is seen as a promising technique, particularly for commercial buildings in the moderate or cold climates of Central......, Eastern and Northern Europe. The basic concept involves cooling the building structure overnight in order to provide a heat sink that is available during the occupancy period. In this study, the potential for passive cooling of buildings by night-time ventilation was evaluated by analysing climatic data......-time ventilative cooling over the whole of Northern Europe and still significant potential in Central, Eastern and even some regions of Southern Europe. However, due to the inherent stochastic properties of weather patterns, a series of warmer nights can occur at some locations, where passive cooling by night...

  16. Star maps and travelling to ceremonies: the Euahlayi People and their use of the night sky

    Science.gov (United States)

    Fuller, Robert S.; Trudgett, Michelle; Norris, Ray P.; Anderson, Michael G.

    2014-07-01

    The Euahlayi people are an Aboriginal Australian language group located in north-central New South Wales and south-central Queensland. They have a rich culture of astronomy and use of the night sky in resource management. Like several other Aboriginal peoples, they did not travel extensively at night, and so were assumed not to use the night sky for navigation. This study has confirmed that they, like most other Aboriginal groups, travelled extensively outside their own country for purposes of trade and ceremonies. We also found previously unpublished evidence that they used "star maps" in the night sky for learning and remembering waypoints along their routes of travel, but not for actual navigation.

  17. Passive Night Vision Sensor Comparison for Unmanned Ground Vehicle Stereo Vision Navigation

    Science.gov (United States)

    Owens, Ken; Matthies, Larry

    2000-01-01

    One goal of the "Demo III" unmanned ground vehicle program is to enable autonomous nighttime navigation at speeds of up to 10 m.p.h. To perform obstacle detection at night with stereo vision will require night vision cameras that produce adequate image quality for the driving speeds, vehicle dynamics, obstacle sizes, and scene conditions that will be encountered. This paper analyzes the suitability of four classes of night vision cameras (3-5 micrometer cooled FLIR, 8-12 micrometer cooled FLIR, 8-12 micrometer uncooled FLIR, and image intensifiers) for night stereo vision, using criteria based on stereo matching quality, image signal to noise ratio, motion blur and synchronization capability. We find that only cooled FLIRs will enable stereo vision performance that meets the goals of the Demo III program for nighttime autonomous mobility.

  18. Swimming black-crowned night-herons (Nycticorax nycticorax) Kleptoparasitize American coots (Fulica americana)

    DEFF Research Database (Denmark)

    Graves, Gary R.

    2015-01-01

    I observed black-crowned night-herons (Nycticorax nycticorax) swimming and kleptoparasitizing American coots (Fulica americana) at an artificial lake in Pinal County, Arizona. This appears to be the first record of interspecific kleptoparasitism by a swimming ardeid.......I observed black-crowned night-herons (Nycticorax nycticorax) swimming and kleptoparasitizing American coots (Fulica americana) at an artificial lake in Pinal County, Arizona. This appears to be the first record of interspecific kleptoparasitism by a swimming ardeid....

  19. Assessing convection modelling in Building Energy Simulation models for night cooling

    OpenAIRE

    Leenknegt, Sarah; Saelens, Dirk

    2013-01-01

    A sensitivity study is conducted with TRNSYS 17 to quantify the influence of different convection correlations during night ventilation on the thermal comfort. Furthermore, three other parameters were varied as well: the air change rate at night, the internal gains, and the accessibility of the thermal mass in the ceiling. The influence of using the Richardson number as correlation selection criteria is investigated. The results show that there is a high risk in overestimating the efficiency ...

  20. Activities that related to feeding behaviour of sugar glider (Petaurus breviceps) in captivity at night

    OpenAIRE

    ANITA SARDIANA TJAKRADIDJAJA; DIDID DIAPARI; ARIA PERDANA; WARTIKA ROSA FARIDA

    2005-01-01

    Activities that related to feeding behaviour of sugar glider (Petaurus breviceps) in captivity at night study on activity that related to feeding behaviour of sugar glider in captivity of small mammals at night has been conducted at the Division of Zoology, Research Center for Biology-LIPI, Bogor. Feeds consisted of passion fruit, banana, guava, papaya, sweet corn, coconut, and bread and were given ad libitum. Four sugar glider consisting of two males and females were place in two cages. One ...