Gastric emptying and gastro-oesophageal reflux in children with cystic fibrosis.

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Hauser, Bruno; De Schepper, Jean; Malfroot, Anne; De Wachter, Elke; De Schutter, Iris; Keymolen, Kathelijn; Vandenplas, Yvan

2016-07-01

Gastro-oesophageal reflux (GOR) is common in patients with cystic fibrosis (CF). The aim of this study was to investigate the relationship between gastric emptying (GE) and GOR in children with CF. Multichannel intraluminal impedance-pH monitoring (MII-pH) to measure GOR and GE breath test (GEBT) to measure GE were performed in 28 children with symptoms suggestive for GOR disease (GORD) (group 1). GEBT was performed in another 28 children with/without GOR symptoms who agreed to undergo GEBT but not MII-pH (group 2). In group 1, we found increased acid GOR (AGOR) in 46.4% and delayed GE (DGE) in 21.4% but no relationship between increased AGOR and DGE. There was no DGE in group 2. We found DGE in 10.7% and rapid GE in 12.5% of the whole group. Almost half of the children with CF and symptoms suggestive for GORD have increased AGOR and almost a quarter has DGE. However, there was no relation between GOR and GE. Copyright © 2015 European Cystic Fibrosis Society. Published by Elsevier B.V. All rights reserved.

Modern medical and surgical management of difficult-to-treat GORD

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Sifrim, Daniel; Tutuian, Radu; Attwood, Stephen; Lundell, Lars

2013-01-01

Approximately 30–40% of patients taking proton pump inhibitors (PPIs) for presumed gastro-oesophageal reflux (GOR) symptoms do not achieve adequate symptom control, especially when no oesophageal mucosal breaks are present at endoscopy and when extra-oesophageal symptoms are concerned. After failure of optimization of medical therapy, a careful work up is mandatory that aims at determining whether symptoms are related to GOR or not. Most patients with refractory symptoms do not have GOR-related symptoms. Some may have symptoms related to weakly acidic reflux and/or oesophageal hypersensitivity. Baclofen is currently the only antireflux compound available as add-on therapy to PPIs, but its poor tolerability limits its use in clinical practice. There is room for pain modulators in patients with hypersensitive oesophagus and functional heartburn. Antireflux surgery is a suitable option in patients responding to medical therapy who want to avoid taking medication or if persisting symptoms can be clearly attributed to poorly controlled GOR. PMID:24917938

Effects of the frame acquisition rate on the sensitivity of gastro-oesophageal reflux scintigraphy

Science.gov (United States)

Codreanu, I; Chamroonrat, W; Edwards, K

2013-01-01

Objective: To compare the sensitivity of gastro-oesophageal reflux (GOR) scintigraphy at 5-s and 60-s frame acquisition rates. Methods: GOR scintigraphy of 50 subjects (1 month–20 years old, mean 42 months) were analysed concurrently using 5-s and 60-s acquisition frames. Reflux episodes were graded as low if activity was detected in the distal half of the oesophagus and high if activity was detected in its upper half or in the oral cavity. For comparison purposes, detected GOR in any number of 5-s frames corresponding to one 60-s frame was counted as one episode. Results: A total of 679 episodes of GOR to the upper oesophagus were counted using a 5-s acquisition technique. Only 183 of such episodes were detected on 60-s acquisition images. To the lower oesophagus, a total of 1749 GOR episodes were detected using a 5-s acquisition technique and only 1045 episodes using 60-s acquisition frames (these also included the high-level GOR on 5-s frames counted as low level on 60-s acquisition frames). 10 patients had high-level GOR episodes that were detected only using a 5-s acquisition technique, leading to a different diagnosis in these patients. No correlation between the number of reflux episodes and the gastric emptying rates was noted. Conclusion: The 5-s frame acquisition technique is more sensitive than the 60-s frame acquisition technique for detecting both high- and low-level GOR. Advances in knowledge: Brief GOR episodes with a relatively low number of radioactive counts are frequently indistinguishable from intense background activity on 60-s acquisition frames. PMID:23520226

Factors relating to age of onset in autism.

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Short, A B; Schopler, E

1988-06-01

We examined the distribution of ages of onset of autism and related communication handicaps and assessed factors related to age of onset. Subjects were approximately 1,800 children seen at Division TEACCH (Treatment and Education of Autistic and related Communication handicapped CHildren) since 1970. Exact numbers of subjects varied with different analyses due to missing data. Data were gathered through direct assessment, interview, and questionnaire. Seventy-six percent of autistic children were identified by parents by 24 months of age, and 94% by 36 months. Families reporting early onset tended to seek help sooner and to be seen by TEACCH sooner. Early onset was most clearly related to severity as measured by IQ and ratings on the Childhood Autism Rating Scale (Schopler, Reichler, & Renner, 1986). The findings support the treatment of age of onset of autism by DSM-III-R (American Psychiatric Association, 1987).

Diagnosis of gastro-oesophageal reflux in children. Comparison between oesophageal pH and barium examinations

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Al-Khawari, Hanaa A. [Department of Radiology, Al-Amiri Hospital, Kuwait University (Kuwait); Sinan, T.S. [Department of Radiology, Mubarak Al-Kabeer Hospital, Kuwait University (Kuwait); Seymour, Helen [Department of Radiology, St George' s Hospital, Blackshaw Road, London SW17 0QT (United Kingdom)

2002-11-01

Gastro-oesophageal reflux (GOR) is a common disorder encountered during childhood. Early diagnosis and treatment is essential to prevent serious complications. There are several methods for the diagnosis of GOR, with variable opinions regarding which one is the most sensitive and specific. Objective. This is a retrospective study comparing 24-h oesophageal pH monitoring and barium examinations in the diagnosis of GOR in children. Patients and methods. All children referred with signs and/or symptoms of GOR from January to December 1996 at Great Ormond Street Hospital, London, UK, were included in the study. The recorded results (presence or absence of reflux) of barium examinations and 24-h oesophageal pH monitoring studies performed on 169 children were retrospectively reviewed and compared. Results. One-third of patients were below 1 year of age. In all age groups, oesophageal pH probe studies showed a high detection rate (83%) and low incidence of false-negative results (7%) compared to barium examinations, which showed a lower detection rate (43%) and higher incidence of false-negative results (48%). Most GOR-related anatomical abnormalities diagnosed by barium examinations were identified in infants below 1 year of age. Conclusions. We believe that 24-h oesophageal pH monitoring should be used as the first line of investigation for the diagnosis of GOR in all children regardless of the age group. Barium examinations can be reserved for patients below 1 year of age, those going for surgery and those with negative oesophageal pH monitoring results but strong clinical suspicion of GOR. (orig.)

Gastro-Oesophageal Reflux and Apnoea: Is There a Temporal Relationship?

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Rossor, Thomas; Andradi, Gwendolyn; Ali, Kamal; Bhat, Ravindra; Greenough, Anne

2018-01-01

Gastro-oesophageal reflux (GOR) and apnoea are common in infants; whether there is a causal relationship is controversial. To determine whether there was a temporal relationship between GOR and apnoea, in particular, the frequency of obstructive apnoeas and if the frequency of GOR episodes correlated with apnoea frequency when maturity at testing was taken into account. Polysomnography and pH/multichannel intraluminal impedance (MII) studies were performed. Apnoeas were classified as central, obstructive, or mixed. MII events were classified as acidic (pH reflux event was compared to that in the 5-min period preceding the event and that in a 5-min reflux-free period (control period). Forty infants (median gestational age 29 [range 24-42] weeks) were assessed at a post-conceptional age of 37 (30-54) weeks. Obstructive (n = 580), central (n = 900), and mixed (n = 452) apnoeas were identified; 381 acid reflux events were detected by MII and 153 by the pH probe only. Apnoeas were not more frequent following GOR than during control periods. Both the frequency of apnoeas (p = 0.002) and GOR episodes (p = 0.01) were inversely related to post-conceptional age at testing, but were not significantly correlated with each other when controlled for post-conceptional age. These results suggest that GOR does not cause apnoea. © 2017 S. Karger AG, Basel.

Systematic review and practice policy statements on urinary tract infection prevention in adults with spina bifida

Science.gov (United States)

Tradewell, Michael; Pariser, Joseph J.; Nimeh, Tony

2018-01-01

Urinary tract infection (UTI) is a source of morbidity and healthcare costs in adults with spina bifida (ASB). UTI prevention strategies are often recommended, but the evidence of various approaches remains unclear. We performed a systematic review to inform a best practice policy statement for UTI prevention in ASB. On behalf of the Neurogenic Bladder Research Group (NBRG.org), we developed an a priori protocol and searched the published English literature for 30 outcomes questions addressing UTI prevention in ASB. The questions spanned the categories of antibiotics, oral supplements, bladder management factors and social support. Where there was little literature in ASB, we included literature from similar populations with neurogenic bladder (NB). Data was abstracted and then reviewed with recommendations made by consensus of all authors. Level of Evidence (LoE) and Grade of Recommendation (GoR) were according to the Oxford grading system. Of 6,433 articles identified by our search, we included 99 publications. There was sufficient evidence to support use of the following: saline bladder irrigation (LoE 1, GoR B), gentamicin bladder instillation (LoE 3, GoR C), single-use intermittent catheterization (IC) (LoE 2, GoR B), hydrophilic catheters for IC (LoE 2, GoR C), intradetrusor onabotulinumtoxinA injection (LoE 3, GoR C), hyaluronic acid (HA) instillation (LoE 1, GoR B), and care coordination (LoE 3, GoR C). There was sufficient evidence to recommend against use of the following: sterile IC (LoE 1, GoR B), oral antibiotic prophylaxis (LoE 2, GoR B), treatment of asymptomatic bacteriuria (LoE 2, GoR B), cranberry (LoE 2, GoR B), methenamine salts (LoE 1, GoR B), and ascorbic acid (LoE1, GoR B). There was insufficient evidence to make a recommendation for other outcomes. Overall, there are few studies in UTI prevention in the specific population of ASB. Research in populations similar to ASB helps to guide recommendations for UTI prevention in the challenging

Distribution of type VI collagen in association with osteoblast lineages in the groove of Ranvier during rat postnatal development.

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Kohara, Yukihiro; Soeta, Satoshi; Izu, Yayoi; Arai, Kiyotaka; Amasaki, Hajime

2016-11-01

In the groove of Ranvier (GOR), osteoblast lineages form bone bark, which develops into endosteal cortical bone. This ossification process is thought to be regulated by the microenvironment in the GOR. Type VI collagen (Col VI), an extracellular matrix (ECM) protein found in the periosteum/perichondrium, mediates osteoblast differentiation via the cell-surface receptor neural/glial antigen 2 (NG2) chondroitin sulfate proteoglycan. In order to clarify the function of Col VI during osteoblast differentiation in the GOR, in the present study, we examined the distribution of Col VI and osteoblast lineages expressing NG2 in the rat tibia proximal end during postnatal growing periods by immunohistochemistry. Our data revealed that Col VI accumulated in the ECM of the GOR middle layer and that Col VI accumulation was reduced and disappeared in the inner and middle lower regions. Runt-related transcription factor 2-immunoreactive pre-osteoblasts expressed NG2 in Col VI-immunopositive areas. However, Osterix-immunoreactive mature osteoblasts were only found in the Col VI-immunonegative area. These findings indicate that Col VI provided a characteristic microenvironment in the GOR and that NG2-Col VI interactions may regulate the differentiation of osteoblast lineages prior to terminal maturation. Copyright © 2016 Elsevier GmbH. All rights reserved.

The smooth entropy formalism for von Neumann algebras

International Nuclear Information System (INIS)

Berta, Mario; Furrer, Fabian; Scholz, Volkher B.

2016-01-01

We discuss information-theoretic concepts on infinite-dimensional quantum systems. In particular, we lift the smooth entropy formalism as introduced by Renner and collaborators for finite-dimensional systems to von Neumann algebras. For the smooth conditional min- and max-entropy, we recover similar characterizing properties and information-theoretic operational interpretations as in the finite-dimensional case. We generalize the entropic uncertainty relation with quantum side information of Tomamichel and Renner and discuss applications to quantum cryptography. In particular, we prove the possibility to perform privacy amplification and classical data compression with quantum side information modeled by a von Neumann algebra

The smooth entropy formalism for von Neumann algebras

Energy Technology Data Exchange (ETDEWEB)

Berta, Mario, E-mail: berta@caltech.edu [Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125 (United States); Furrer, Fabian, E-mail: furrer@eve.phys.s.u-tokyo.ac.jp [Department of Physics, Graduate School of Science, University of Tokyo, Tokyo, Japan and Institute for Theoretical Physics, Leibniz University Hanover, Hanover (Germany); Scholz, Volkher B., E-mail: scholz@phys.ethz.ch [Institute for Theoretical Physics, ETH Zurich, Zurich (Switzerland)

2016-01-15

We discuss information-theoretic concepts on infinite-dimensional quantum systems. In particular, we lift the smooth entropy formalism as introduced by Renner and collaborators for finite-dimensional systems to von Neumann algebras. For the smooth conditional min- and max-entropy, we recover similar characterizing properties and information-theoretic operational interpretations as in the finite-dimensional case. We generalize the entropic uncertainty relation with quantum side information of Tomamichel and Renner and discuss applications to quantum cryptography. In particular, we prove the possibility to perform privacy amplification and classical data compression with quantum side information modeled by a von Neumann algebra.

Proximal and distal gastro-oesophageal reflux in chronic obstructive pulmonary disease and bronchiectasis.

Science.gov (United States)

Lee, Annemarie L; Button, Brenda M; Denehy, Linda; Roberts, Stuart J; Bamford, Tiffany L; Ellis, Samantha J; Mu, Fi-Tjen; Heine, Ralf G; Stirling, Robert G; Wilson, John W

2014-02-01

The aims of this observational study were (i) to examine the prevalence of symptomatic and clinically silent proximal and distal gastro-oesophageal reflux (GOR) in adults with chronic obstructive pulmonary disease (COPD) or bronchiectasis, (ii) the presence of gastric aspiration, and (iii) to explore the possible clinical significance of this comorbidity in these conditions. Twenty-seven participants with COPD, 27 with bronchiectasis and 17 control subjects completed reflux symptom evaluation and dual-channel 24 h oesophageal pH monitoring. In those with lung disease, pepsin levels in sputum samples were measured using enzyme-linked immunosorbent assay, with disease severity (lung function and high-resolution computed tomography) also measured. The prevalence of GOR in COPD was 37%, in bronchiectasis was 40% and in control subjects was 18% (P = 0.005). Of those diagnosed with GOR, clinically silent reflux was detected in 20% of participants with COPD and 42% with bronchiectasis. While pepsin was found in 33% of COPD and 26% of bronchiectasis participants, the presence of pepsin in sputum was not related to a diagnosis of GOR based on oesophageal pH monitoring in either condition. Neither a diagnosis of GOR nor the presence of pepsin was associated with increased severity of lung disease in COPD or bronchiectasis. The prevalence of GOR in COPD or bronchiectasis is twice that of the control population, and the diagnosis could not be based on symptoms alone. Pepsin was detected in sputum in COPD and bronchiectasis, suggesting a possible role of pulmonary aspiration, which requires further exploration. © 2013 The Authors. Respirology © 2013 Asian Pacific Society of Respirology.

Gastro-oesophageal reflux and worse asthma control in obese children: a case of symptom misattribution?

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Lang, Jason E; Hossain, Jobayer; Holbrook, Janet T; Teague, W Gerald; Gold, Benjamin D; Wise, Robert A; Lima, John J

2016-03-01

Obese children for unknown reasons report greater asthma symptoms. Asthma and obesity both independently associate with gastro-oesophageal reflux symptoms (GORS). Determining if obesity affects the link between GORS and asthma will help elucidate the obese-asthma phenotype. Extend our previous work to determine the degree of associations between the GORS and asthma phenotype. We conducted a cross-sectional study of lean (20%-65% body mass index, BMI) and obese (≥95% BMI) children aged 10-17 years old with persistent, early-onset asthma. Participants contributed demographics, GORS and asthma questionnaires and lung function data. We determined associations between weight status, GORS and asthma outcomes using multivariable linear and logistic regression. Findings were replicated in a second well-characterised cohort of asthmatic children. Obese children had seven times higher odds of reporting multiple GORS (OR=7.7, 95% CI 1.9 to 31.0, interaction p value=.004). Asthma symptoms were closely associated with GORS scores in obese patients (r=0.815, pgastro-oesophageal reflux and asthma symptoms suggests that misattribution of GORS to asthma may be a contributing mechanism to excess asthma symptoms in obese children. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/

Gastro-oesophageal reflux demonstrated by radiography: a supplement to 24-h pH monitoring

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Madsen, E.; Aksglaede, K.; Jacobsen, N.O.; Funch-Jensen, P.; Thommesen, P. [Aarhus Univ. Hospital (Denmark)

2001-09-01

Purpose: Gastro-oesophageal reflux (GOR) is demonstrated by radiography as a supplement to 24-h pH monitoring. Material and Methods: Forty-two patients (mean age 44 years) with suspicion of GOR disease were assessed according to a standard questionnaire. GOR was investigated by 24-h pH-monitoring and by radiography. Oesophageal emptying and the presence of rings or strictures were registered as well. Mucosal biopsies, classified as normal, light oesophagitis, severe oesophagitis, or Barrett's oesophagus, were correlated to age, gender, symptomatology, pH monitoring, and oesophageal emptying. GOR and morphological changes demonstrated by radiography were correlated to pH monitoring and mucosa biopsies. Results: Based on pH monitoring, patients with severe oesophagitis and Barrett's oesophagus had a significantly higher acid exposure compared to patients with normal mucosa and light oesophagitis, with no difference concerning age, gender, and symptoms. Severe oesophagitis, including Barrett's oesophagus, was found only in patients with a positive test for radiologic GOR. Eleven patients had rings or strictures independent of oesophageal mucosal changes. Conclusion: GOR demonstrated by radiography identified patients where complications could be expected, which was not possible by pH monitoring alone.

Analysis of Thermal Properties on Backward Feed Multi effect Distillation Dealing with High-Salinity Wastewater

International Nuclear Information System (INIS)

Xue, J.; Ming, J.; Li, L.; Cui, Q.; Bai, Y.

2015-01-01

Theoretical investigations on thermal properties of multi effect distillation (MED) are presented to approach lower capital costs and more distillated products. A mathematical model, based on the energy and mass balance, is developed to (i) evaluate the influences of variations in key parameters (effect numbers, evaporation temperature in last effect, and feed salinity) on steam consumption, gained output ratio (GOR), and total heat transfer areas of MED and (II) compare two operation modes (backward feed (BF) and forward feed (FF) systems). The result in the first part indicated that GOR and total heat transfer areas increased with the effect numbers. Also, higher effect numbers result in the fact that the evaporation temperature in last effect has slight influence on GOR, while it influences the total heat transfer areas remarkably. In addition, an increase of feed salinity promotes the total heat transfer areas but reduces GOR. The analyses in the second part indicate that GOR and total heat transfer areas of BF system are higher than those in FF system. One thing to be aware of is that the changes of steam consumption can be omitted, considering that it shows an opposite trend to GOR.

Gastro-Oesophageal Reflux in Noncystic Fibrosis Bronchiectasis

Directory of Open Access Journals (Sweden)

Annemarie L. Lee

2011-01-01

Full Text Available The clinical presentation of noncystic fibrosis bronchiectasis may be complicated by concomitant conditions, including gastro-oesophageal reflux (GOR. Increased acidic GOR is principally caused by gastro-oesophageal junction incompetence and may arise from lower oesophageal sphincter hypotension, including transient relaxations, hiatus hernia, and oesophageal dysmotility. Specific pathophysiological features which are characteristic of respiratory diseases including coughing may further increase the risk of GOR in bronchiectasis. Reflux may impact on lung disease severity by two mechanisms, reflex bronchoconstriction and pulmonary microaspiration. Symptomatic and clinically silent reflux has been detected in bronchiectasis, with the prevalence of 26 to 75%. The cause and effect relationship has not been established, but preliminary reports suggest that GOR may influence the severity of bronchiectasis. Further studies examining the implications of GOR in this condition, including its effect across the disease spectrum using a combination of diagnostic tools, will clarify the clinical significance of this comorbidity.

Acid and non-acid reflux during physiotherapy in young children with cystic fibrosis.

Science.gov (United States)

Doumit, Michael; Krishnan, Usha; Jaffé, Adam; Belessis, Yvonne

2012-02-01

Gastro-esophageal reflux (GOR) may contribute to lung disease in children with cystic fibrosis (CF). There is conflicting evidence regarding the effect of chest physiotherapy (CPT) in the head-down position on GOR. Furthermore, there is currently no evidence on the impact of physiotherapy on GOR as assessed by pH-multichannel intraluminal impedance (pH-MII). (1) To characterize GOR in young children with CF. (2) To determine whether the head-down position during physiotherapy exacerbates GOR. Children were studied using pH-MII monitoring over 24-hr, during which they received two 20-min sessions of CPT. One session was performed in "modified" drainage positions with no head-down tilt and the alternate session in "gravity-assisted" drainage positions, which included 20° head-down tilt. Twenty children with CF (8 males), median age 12 months (range 8-34) were recruited. A total of 1,374 reflux episodes were detected in all children, of which 869 (63%) were acid and 505 (37%) were non-acid. Seventy-two percent of the episodes migrated proximally. During CPT, there was no significant difference between total number of reflux episodes in the modified or gravity-assisted positions, median [inter-quartile range (IQR)] 1 (0-2.5) compared to 1 (0.75-3) episode, respectively, P = 0.63. There was also no significant difference between the number of reflux episodes which migrated proximally, median (IQR) 1 (0-2) compared to 0 (0-2) episodes, respectively, P = 0.75. In young children with CF, GOR is primarily acidic and proximal migration is common. Physiotherapy in the head-down position does not appear to exacerbate GOR. The impact of GOR on lung disease remains to be elucidated. Copyright © 2011 Wiley Periodicals, Inc.

Squashed Entanglement, k-Extendibility, Quantum Markov Chains, and Recovery Maps

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Li, Ke; Winter, Andreas

2018-02-01

Squashed entanglement (Christandl and Winter in J. Math. Phys. 45(3):829-840, 2004) is a monogamous entanglement measure, which implies that highly extendible states have small value of the squashed entanglement. Here, invoking a recent inequality for the quantum conditional mutual information (Fawzi and Renner in Commun. Math. Phys. 340(2):575-611, 2015) greatly extended and simplified in various work since, we show the converse, that a small value of squashed entanglement implies that the state is close to a highly extendible state. As a corollary, we establish an alternative proof of the faithfulness of squashed entanglement (Brandão et al. Commun. Math. Phys. 306:805-830, 2011). We briefly discuss the previous and subsequent history of the Fawzi-Renner bound and related conjectures, and close by advertising a potentially far-reaching generalization to universal and functorial recovery maps for the monotonicity of the relative entropy.

An artificial neural network strategy for monitoring of gas/oil systems in slug flow pattern; Aplicacao de redes neurais artificiais no monitoramento do escoamento de sistemas gas/oleo em regime de golfadas

Energy Technology Data Exchange (ETDEWEB)

Cardoso, Fernando H.B. [Universidade Tiradentes (UNIT), Aracaju, SE (Brazil). Instituto de Tecnologia e Pesquisa; Universidade Federal de Campina Grande (UFCG), PB (Brazil); Silva, Rosivania P.; Fortuny, Montserrat; Santos, Alexandre F. [Universidade Tiradentes (UNIT), Aracaju, (Brazil). Instituto de Tecnologia e Pesquisa; Nunes, Giovani C. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES)

2008-07-01

In the petroleum industry, the design of multiphase production systems requires an accurate estimation of the gas-oil ratio (GOR) in the transporting pipelines. However, existing GOR estimation methods are often inadequate in terms of desired accuracy and application range, due to the complex phase distributions and the wide range of fluid properties encountered in production operations. In this paper, the effectiveness of using artificial neural networks in determining GOR values is evaluated, proving to be a reasonable way to monitor this property during oil transportation. (author)

Gastro-oesophageal reflux: a mixed methods study of infants admitted to hospital in the first 12 months following birth in NSW (2000-2011).

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Dahlen, Hannah Grace; Foster, Jann P; Psaila, Kim; Spence, Kaye; Badawi, Nadia; Fowler, Cathrine; Schmied, Virginia; Thornton, Charlene

2018-02-12

Gastro-oesophageal reflux (GOR) is common in infants. When the condition causes pathological symptoms and/or complications it is considered gastro-oesophageal reflux disease (GORD). It appears to be increasingly diagnosed and causes great distress in the first year of infancy. In New South Wales (NSW), residential parenting services support families with early parenting difficulties. These services report a large number of babies admitted with a label of GOR/GORD. The aim of this study was to explore the maternal and infant characteristics, obstetric interventions, and reasons for clinical reporting of GOR/GORD in NSW in the first 12 months following birth (2000-2011). A three phase, mixed method sequential design was used. Phase 1 included a linked data population based study (n = 869,188 admitted babies). Phase 2 included a random audit of 326 medical records from admissions to residential parenting centres in NSW (2013). Phase 3 included eight focus groups undertaken with 45 nurses and doctors working in residential parenting centres in NSW. There were a total of 1,156,020 admissions recorded of babies in the first year following birth, with 11,513 containing a diagnostic code for GOR/GORD (1% of infants admitted to hospitals in the first 12 months following birth). Babies with GOR/GORD were also more likely to be admitted with other disorders such as feeding difficulties, sleep problems, and excessive crying. The mothers of babies admitted with a diagnostic code of GOR/GORD were more likely to be primiparous, Australian born, give birth in a private hospital and have: a psychiatric condition; a preterm or early term infant (37-or-38 weeks); a caesarean section; an admission of the baby to SCN/NICU; and a male infant. Thirty six percent of infants admitted to residential parenting centres in NSW had been given a diagnosis of GOR/GORD. Focus group data revealed two themes: "It is over diagnosed" and "A medical label is a quick fix, but what else could be

International consensus conference on open abdomen in trauma.

Science.gov (United States)

Chiara, Osvaldo; Cimbanassi, Stefania; Biffl, Walter; Leppaniemi, Ari; Henry, Sharon; Scalea, Thomas M; Catena, Fausto; Ansaloni, Luca; Chieregato, Arturo; de Blasio, Elvio; Gambale, Giorgio; Gordini, Giovanni; Nardi, Guiseppe; Paldalino, Pietro; Gossetti, Francesco; Dionigi, Paolo; Noschese, Giuseppe; Tugnoli, Gregorio; Ribaldi, Sergio; Sgardello, Sebastian; Magnone, Stefano; Rausei, Stefano; Mariani, Anna; Mengoli, Francesca; di Saverio, Salomone; Castriconi, Maurizio; Coccolini, Federico; Negreanu, Joseph; Razzi, Salvatore; Coniglio, Carlo; Morelli, Francesco; Buonanno, Maurizio; Lippi, Monica; Trotta, Liliana; Volpi, Annalisa; Fattori, Luca; Zago, Mauro; de Rai, Paolo; Sammartano, Fabrizio; Manfredi, Roberto; Cingolani, Emiliano

2016-01-01

A part of damage-control laparotomy is to leave the fascial edges and the skin open to avoid abdominal compartment syndrome and allow further explorations. This condition, known as open abdomen (OA), although effective, is associated with severe complications. Our aim was to develop evidence-based recommendations to define indications for OA, techniques for temporary abdominal closure, management of enteric fistulas, and methods of definitive wall closure. The literature from 1990 to 2014 was systematically screened according to PRISMA [Preferred Reporting Items for Systematic Reviews and Meta-analyses] protocol. Seventy-six articles were reviewed by a panel of experts to assign grade of recommendations (GoR) and level of evidence (LoE) using the GRADE [Grading of Recommendations Assessment, Development, and Evaluation] system, and an international consensus conference was held. OA in trauma is indicated at the end of damage-control laparotomy, in the presence of visceral swelling, for a second look in vascular injuries or gross contamination, in the case of abdominal wall loss, and if medical treatment of abdominal compartment syndrome has failed (GoR B, LoE II). Negative-pressure wound therapy is the recommended temporary abdominal closure technique to drain peritoneal fluid, improve nursing, and prevent fascial retraction (GoR B, LoE I). Lack of OA closure within 8 days (GoR C, LoE II), bowel injuries, high-volume replacement, and use of polypropylene mesh over the bowel (GoR C, LoE I) are risk factors for frozen abdomen and fistula formation. Negative-pressure wound therapy allows to isolate the fistula and protect the surrounding tissues from spillage until granulation (GoR C, LoE II). Correction of fistula is performed after 6 months to 12 months. Definitive closure of OA has to be obtained early (GoR C, LoE I) with direct suture, traction devices, component separation with or without mesh. Biologic meshes are an option for wall reinforcement if bacterial

[Gastric emptying of a solid-liquid meal in gastroesophageal reflux in adults].

Science.gov (United States)

Bost, R; Hostein, J; Gignoux, C; Busquet, G; Lachet, B; Fournet, J

1986-04-01

Several studies concerning the relationships between gastroesophageal reflux (GOR), gastric emptying and esophageal motility are available. So far, results have been contradictory. The purpose of this work was to study gastric emptying in patients with GOR; to search for simultaneous esophageal motility disorders and to specify their type and frequency; to establish a potential relationship between motor disorders of the esophagus and the stomach in these patients. Thirty-two consecutive patients were selected according to clinical criteria, i.e. presence of at least two of the three characteristic symptoms of GOR, and the data of a three-hour post-prandial pH-metry. Gastric stasis related clinical manifestations (nausea, post-prandial vomiting, sensation of abdominal distension or of post-prandial epigastric fullness) were also searched for in all patients. A gastroscopy allowed to score esophagitis in each case. All patients, including adult controls underwent an esophageal manometry as well as a radionuclide determination of gastric emptying, after isotopic labelling of the solid (S) and liquid (L) phases of a test meal. The results showed that there was no significant modification of gastric emptying of the S and L phases of the meal in the group of patients with GOR whatever the intensity of the reflux, judged on the pH-metry results and the endoscopic data. Thus the average time of gastric half-emptying of S and L was respectively 115 and 52 min for the patients vs 111 and 51 min for the control group. As well, no correlation was found between the gastric emptying parameters and the presence or absence of clinical signs of gastric stasis or the amplitude of esophageal contraction waves. On an individual basis, two patients showed a significant decrease in gastric emptying of either the S or L phases without any attendant modification in the kinetics of the other. These results suggest that, in the adult, gastric emptying cannot be considered to be a

Extending quantum mechanics entails extending special relativity

International Nuclear Information System (INIS)

Aravinda, S; Srikanth, R

2016-01-01

The complementarity between signaling and randomness in any communicated resource that can simulate singlet statistics is generalized by relaxing the assumption of free will in the choice of measurement settings. We show how to construct an ontological extension for quantum mechanics (QMs) through the oblivious embedding of a sound simulation protocol in a Newtonian spacetime. Minkowski or other intermediate spacetimes are ruled out as the locus of the embedding by virtue of hidden influence inequalities. The complementarity transferred from a simulation to the extension unifies a number of results about quantum non-locality, and implies that special relativity has a different significance for the ontological model and for the operational theory it reproduces. Only the latter, being experimentally accessible, is required to be Lorentz covariant. There may be certain Lorentz non-covariant elements at the ontological level, but they will be inaccessible at the operational level in a valid extension. Certain arguments against the extendability of QM, due to Conway and Kochen (2009) and Colbeck and Renner (2012), are attributed to their assumption that the spacetime at the ontological level has Minkowski causal structure. (paper)

Scintigraphy in the detection of gastro-oesophageal reflux in children with caustic oesophageal burns: a comparative study with radiography and 24-h pH monitoring

Energy Technology Data Exchange (ETDEWEB)

Oezcan, Z.; Erinc, R.; Dirlik, A. [Dept. of Nuclear Medicine, Ege University Medical Faculty, Izmir (Turkey); Oezcan, C.; Mutaf, O. [Dept. of Paediatric Surgery, Ege University Medical Faculty, Izmir (Turkey)

2001-10-01

Background: Caustic injury of the oesophagus not only causes luminal narrowing but is also responsible for longitudinal contraction, resulting in gastro-oesophageal reflux (GOR), which leads to failure of conventional therapy. Therefore, the development of GOR should be investigated periodically to direct appropriate management of these patients. Purpose: To determine the ability of scintigraphy to detect GOR in children with caustic oesophageal strictures in comparison with barium study and 24-h pH monitoring. Materials and methods: Seventeen children with caustic oesophageal injury underwent scintigraphy, an upper GI barium study and 24-h pH monitoring within the same week. Five patients were also investigated post-operatively for the assessment of surgical outcome after antireflux surgery. Results: On the whole, there was good correlation (r = 0.78, P < 0.00 l) between scintigraphy and 24-h oesophageal pH monitoring. Scintigraphy detected all but one (9/10) refluxing patients and also correctly identified all (7/7) non-refluxing patients. Barium studies demonstrated 6 out of 10 refluxing patients. There were no false-positive barium studies in non-refluxing patients. Post-operative studies demonstrated no evidence of GOR in surgically treated patients. Conclusions: Our results indicate that, by comparison with barium studies, scintigraphy is useful in the detection of GOR in cases with caustic oesophageal strictures and may be used as a screening modality for those under clinical follow-up. (orig.)

Influence of intrapulmonary percussive ventilation in upright position on gastro-oesophageal reflux in infants.

Science.gov (United States)

Van Ginderdeuren, F; Kerckhofs, E; Deneyer, M; Vanlaethem, S; Buyl, R; Vandenplas, Y

2016-10-01

To determine the influence of physiotherapy using intrapulmonary percussive ventilation on gastro-oesophageal reflux (GOR) in infants reflux episodes (RE) over a 20-min period was registered for each infant and a mean per 20 min was calculated in order to obtain a baseline value. The number of RE during IPV R intervention was compared to baseline. Fifty infants with a median age of 133 days were recruited of whom 21 were diagnosed with pathological GOR. During IPV R , the incidence of RE in the entire group was significantly lower compared to baseline; median (inter-quartile range [IQR]) 0 (0-1) versus 0.71 (0-1.33) RE, respectively, P = 0.003. The subgroup with abnormal GOR showed also a significant decrease of RE during IPV R ; median (IQR) 0 (0-1) versus 1.17 (0.55-2.16) RE, respectively, P = 0.03. No difference was detected in the group with normal reflux; median (IQR) 0.6 (0-1) compared to 0 (0-1) RE, respectively, P = 0.34. IPV R does not induce, nor aggravate GOR in infants without and with pathological GOR, respectively, but on the contrary decreases the number of RE in patients with pathological reflux. Pediatr Pulmonol. 2016;51:1065-1071. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.

Influence of respiratory physiotherapy on gastro-oesophageal reflux in infants: A systematic review.

Science.gov (United States)

Van Ginderdeuren, Filip; Kerckhofs, Eric; Deneyer, Michel; Vanlaethem, Sylvie; Vandenplas, Yvan

2015-09-01

To provide a survey on the literature concerning the influence of respiratory physiotherapy on gastro-oesophageal reflux (GOR) in infants and young children. Electronic databases (Pubmed, Web of Science, PEDro) and reference lists of articles and narrative reviews were searched. Articles were included when infants and small children underwent oesophageal pH monitoring or pH-multichannel intraluminal impedance monitoring while respiratory physiotherapy was administered. Descriptive analysis was performed and two researchers scored the methodological quality of these studies. Out of 985 articles, seven (six English, one French) have been included, In total 277 patients were involved, 71 with cystic fibrosis. Depending on the technique used, four studies showed GOR to be aggravated during therapy, three studies reported no effect. The evidence is not conclusive on whether respiratory physiotherapy induces or aggravates GOR in infants and small children. Age, disease, and treatment options play an important role. More specific research, also focussing on the influence of respiratory physiotherapy on non-acid reflux and the impact of recently developed airway clearance techniques (ACT's) on GOR is necessary. © 2015 Wiley Periodicals, Inc.

Algebraic monoids, group embeddings, and algebraic combinatorics

CERN Document Server

Li, Zhenheng; Steinberg, Benjamin; Wang, Qiang

2014-01-01

This book contains a collection of fifteen articles and is dedicated to the sixtieth birthdays of Lex Renner and Mohan Putcha, the pioneers of the field of algebraic monoids.   Topics presented include:   v  structure and representation theory of reductive algebraic monoids v  monoid schemes and applications of monoids v  monoids related to Lie theory v  equivariant embeddings of algebraic groups v  constructions and properties of monoids from algebraic combinatorics v  endomorphism monoids induced from vector bundles v  Hodge–Newton decompositions of reductive monoids   A portion of these articles are designed to serve as a self-contained introduction to these topics, while the remaining contributions are research articles containing previously unpublished results, which are sure to become very influential for future work. Among these, for example, the important recent work of Michel Brion and Lex Renner showing that the algebraic semigroups are strongly π-regular.   Graduate students as well a...

Mecanismos de recompra de ações e expropriação de acionistas minoritários - evidência do Brasil

OpenAIRE

Saito, Richard

2001-01-01

Este artigo examina o impacto das recentes programas de recompra de ações sobre a expropriação de acionistas minoritários. Recentemente, houve 12 ofertas de recompra de ações cujo controle foi adquirido por investidores estratégicos estrangeiros ou por consórcios para comprar empresas privatizadas. Dois exemplos são: (i) a compra do controle da Lojas Renner, empresa de varejo da família Renner pela J. C. Penney; e (ii) Cargill comprando o controle da Solorrico, uma empresa de fertilizantes co...

Gastro-oesophageal reflux in patients with chronic rhino-sinusitis investigated with multichannel impedance - pH monitoring.

Science.gov (United States)

Katle, E J; Hatlebakk, J G; Grimstad, T; Kvaløy, J T; Steinsvåg, S K

2017-03-01

The pathophysiology of chronic rhinosinusitis (CRS) is unclear. It has been discussed for decades whether gastro-oesophageal reflux (GOR) may be a contributing factor for some patients. The aim of the present study was to evaluate the level of GOR in an unselected group of patients with CRS using multichannel impedance-pH monitoring. Consecutive patients with CRS diagnosed using the EPOS2012 criteria, completed questionnaires on GOR symptoms and were offered 24-h multichannel intraluminal impedance (MII)-pH monitoring. The results were compared with a group of healthy controls. Forty-six patients completed MII-pH-monitoring and were compared with 45 control subjects, with comparable age and gender distributions. The median number of reflux episodes in the patients was 56.5 compared with 33 in controls, while, the numbers of proximal reflux episodes was 27.5 versus 3, respectively. Thirty nine patients had abnormal pH-impedance recordings compared with five controls. The CRS patients had significantly higher incidences of gastro-oesophageal reflux compared with asymptomatic controls. The results of this study suggest that GOR may be a causative or contributing factor of CRS.

Gastro-oesophageal reflux in large-sized, deep-chested versus small-sized, barrel-chested dogs undergoing spinal surgery in sternal recumbency.

Science.gov (United States)

Anagnostou, Tilemahos L; Kazakos, George M; Savvas, Ioannis; Kostakis, Charalampos; Papadopoulou, Paraskevi

2017-01-01

The aim of this study was to investigate whether an increased frequency of gastro-oesophageal reflux (GOR) is more common in large-sized, deep-chested dogs undergoing spinal surgery in sternal recumbency than in small-sized, barrelchested dogs. Prospective, cohort study. Nineteen small-sized, barrel-chested dogs (group B) and 26 large-sized, deep-chested dogs (group D). All animals were premedicated with intramuscular (IM) acepromazine (0.05 mg kg -1 ) and pethidine (3 mg kg -1 ) IM. Anaesthesia was induced with intravenous sodium thiopental and maintained with halothane in oxygen. Lower oesophageal pH was monitored continuously after induction of anaesthesia. Gastro-oesophageal reflux was considered to have occurred whenever pH values > 7.5 or < 4 were recorded. If GOR was detected during anaesthesia, measures were taken to avoid aspiration of gastric contents into the lungs and to prevent the development of oesophagitis/oesophageal stricture. The frequency of GOR during anaesthesia was significantly higher in group D (6/26 dogs; 23.07%) than in group B (0/19 dogs; 0%) (p = 0.032). Signs indicative of aspiration pneumonia, oesophagitis or oesophageal stricture were not reported in any of the GOR cases. In large-sized, deep-chested dogs undergoing spinal surgery in sternal recumbency, it would seem prudent to consider measures aimed at preventing GOR and its potentially devastating consequences (oesophagitis/oesophageal stricture, aspiration pneumonia). Copyright © 2016 Association of Veterinary Anaesthetists and American College of Veterinary Anesthesia and Analgesia. Published by Elsevier Ltd. All rights reserved.

[Gastroesophageal reflux disease and respiratory disease].

Science.gov (United States)

Mattioli, G; Caffarena, P E; Battistini, E; Fregonese, B; Barabino, A; Jasonni, V

1995-01-01

The patients treated for oesophageal atresia present a correlation between the clinical sintomatology after recanalization characterized by disfagia, dispnea, recurrent cough, chronic pneumopaties and oesophageal anomalies. Where morphological alterations accounting for the presence of gastro-oesophageal reflux (GOR) were not evident, possible functional alterations of the motility were considered. The incidence of GOR was considerably high and, expression of a congenital alteration of the lower oesophageal sphincter and of oesophageal peristalsis, becomes even more severe due to further stretching of the gastro-esophageal junction. The authors underline that the early demonstration of histological changes, even before recanalization, and the motility disorders of the oesophagus have to be well studied, while the LES is normalized, in order to prevent and treat the possible appearance of the well-known complications of GOR.

Equilibrium gas-oil ratio measurements using a microfluidic technique.

Science.gov (United States)

Fisher, Robert; Shah, Mohammad Khalid; Eskin, Dmitry; Schmidt, Kurt; Singh, Anil; Molla, Shahnawaz; Mostowfi, Farshid

2013-07-07

A method for measuring the equilibrium GOR (gas-oil ratio) of reservoir fluids using microfluidic technology is developed. Live crude oils (crude oil with dissolved gas) are injected into a long serpentine microchannel at reservoir pressure. The fluid forms a segmented flow as it travels through the channel. Gas and liquid phases are produced from the exit port of the channel that is maintained at atmospheric conditions. The process is analogous to the production of crude oil from a formation. By using compositional analysis and thermodynamic principles of hydrocarbon fluids, we show excellent equilibrium between the produced gas and liquid phases is achieved. The GOR of a reservoir fluid is a key parameter in determining the equation of state of a crude oil. Equations of state that are commonly used in petroleum engineering and reservoir simulations describe the phase behaviour of a fluid at equilibrium state. Therefore, to accurately determine the coefficients of an equation of state, the produced gas and liquid phases have to be as close to the thermodynamic equilibrium as possible. In the examples presented here, the GORs measured with the microfluidic technique agreed with GOR values obtained from conventional methods. Furthermore, when compared to conventional methods, the microfluidic technique was simpler to perform, required less equipment, and yielded better repeatability.

Estimating thermal maturity in the Eagle Ford Shale petroleum system using gas gravity data

Science.gov (United States)

Birdwell, Justin E.; Kinney, Scott A.

2017-01-01

Basin-wide datasets that provide information on the geochemical properties of petroleum systems, such as source rock quality, product composition, and thermal maturity, are often difficult to come by or assemble from publically available data. When published studies are available and include these kinds of properties, they generally have few sampling locations and limited numbers and types of analyses. Therefore, production-related data and engineering parameters can provide useful proxies for geochemical properties that are often widely available across a play and in some states are reported in publically available or commercial databases. Gas-oil ratios (GOR) can be calculated from instantaneous or cumulative production data and can be related to the source rock geochemical properties like kerogen type (Lewan and Henry, 1999) and thermal maturity (Tian et al., 2013; U.S. Energy Information Administration [EIA], 2014). Oil density or specific gravity (SG), often reported in American Petroleum Institute units (°API = 141.5 /SG – 131.5), can also provide information on source rock thermal maturity, particularly when combined with GOR values in unconventional petroleum systems (Nesheim, 2017).

Autosomal dominant hereditary sensory neuropathy with chronic cough and gastro-oesophageal reflux: clinical features in two families linked to chromosome 3p22-p24.

Science.gov (United States)

Spring, Penelope J; Kok, Cindy; Nicholson, Garth A; Ing, Alvin J; Spies, Judith M; Bassett, Mark L; Cameron, John; Kerlin, Paul; Bowler, Simon; Tuck, Roger; Pollard, John D

2005-12-01

Autosomal dominant hereditary sensory neuropathy (HSN I) is a clinically and genetically heterogeneous group of disorders, and in some families it is due to mutations in the serine palmitoyltransferase (SPTLC1) gene. We have characterized two families with HSN I associated with cough and gastro-oesophageal reflux (GOR). From a large Australian family, 27 individuals and from a smaller family, 11 individuals provided clinical information and blood for genetic analysis. Affected individuals had an adult onset of paroxysmal cough, GOR and distal sensory loss. Cough could be triggered by noxious odours or by pressure in the external auditory canal (Arnold's ear-cough reflex). Other features included throat clearing, hoarse voice, cough syncope and sensorineural hearing loss. Neurophysiological and pathological studies demonstrated a sensory axonal neuropathy. Gastric emptying studies were normal, and autonomic function and sweat tests were either normal or showed distal hypohidrosis. Cough was likely to be due to a combination of denervation hypersensitivity of the upper airways and oesophagus, and prominent GOR. Most affected individuals were shown on 24 h ambulatory oesophageal pH monitoring to have multiple episodes of GOR, closely temporally associated with coughing. Hoarse voice was probably attributable to acid-induced laryngeal damage, and there was no evidence of vocal cord palsy. No other cause for cough was found on most respiratory or otorhinological studies. Linkage to chromosome 3p22-p24 has been found in both families, with no evidence of linkage to loci for known HSN I, autosomal dominant hereditary motor and sensory neuropathy, hereditary GOR or triple A syndrome. These families represent a genetically novel variant of HSN I, with a distinctive cough owing to involvement of the upper aerodigestive tract.

Humidification dehumidification desalination system using parabolic trough solar air collector

International Nuclear Information System (INIS)

Al-Sulaiman, Fahad A.; Zubair, M. Ifras; Atif, Maimoon; Gandhidasan, Palanichamy; Al-Dini, Salem A.; Antar, Mohamed A.

2015-01-01

This paper deals with a detailed thermodynamic analysis to assess the performance of an HDH system with an integrated parabolic trough solar collector (PTSC). The HDH system considered is an open air, open water, air heated system that uses a PTSC as an air heater. Two different configurations were considered of the HDH system. In the first configuration, the solar air heater was placed before the humidifier whereas in the second configuration the solar air heater was placed between the humidifier and the dehumidifier. The current study revealed that PTSCs are well suited for air heated HDH systems for high radiation location, such as Dhahran, Saudi Arabia. The comparison between the two HDH configurations demonstrates that the gained output ratio (GOR) of the first configuration is, on average, about 1.5 whereas for the second configuration the GOR increases up to an average value of 4.7. The study demonstrates that the HDH configuration with the air heater placed between the humidifier and the dehumidifier has a better performance and a higher productivity. - Highlights: • Thermodynamic analysis of an HDH system driven by a parabolic trough solar collector was conducted. • The first configuration reveals a GOR of 1.5 while the second configuration reveals a GOR of 4.7. • Effective heating of the HDH system was obtained through parabolic trough solar collector

Pharmacological treatment of children with gastro-oesophageal reflux.

Science.gov (United States)

Tighe, Mark; Afzal, Nadeem A; Bevan, Amanda; Hayen, Andrew; Munro, Alasdair; Beattie, R Mark

2014-11-24

neonates treated with domperidone over 24 hours showed that although reflux frequency was significantly increased, reflux duration was significantly improved.Diversity of RCT evidence was found regarding efficacy of compound alginate preparations(Gaviscon Infant(®) ) in infants, although as a result of these studies, Gaviscon Infant(®) was changed to become aluminium-free and has been assessed in its current form in only two studies since 1999. Given the diversity of study designs and the heterogeneity of outcomes, as well as the evolution in formulation, it was not possible to perform a meta-analysis on the efficacy of Gaviscon Infant(®) . Moderate evidence indicates that Gaviscon Infant(®) improves symptoms in infants, including those with functional reflux; the largest study of the current formulation showed improvement in symptom control but was limited by length of follow-up.No serious side effects were reported.No RCTs on pharmacological treatments for children with neurodisability were identified. Moderate evidence was found to support the use of PPIs, along with some evidence to support the use of H₂ antagonists in older children with GORD, based on improvement in symptom scores, pH indices and endoscopic/histological appearances. However, lack of independent placebo-controlled and head-to-head trials makes conclusions as to relative efficacy difficult to determine. Further RCTs are recommended. No robust RCT evidence is available to support the use of domperidone, and further studies on prokinetics are recommended, including assessments of erythromycin.Pharmacological treatment of infants with reflux symptoms is problematic, as many infants have GOR, and little correlation has been noted between reported symptoms and endoscopic and pH findings. Better evidence has been found to support the use of PPIs in infants with GORD, but heterogeneity in outcomes and in study design impairs interpretation of placebo-controlled data regarding efficacy. Some evidence is

Renyi generalizations of the conditional quantum mutual information

Science.gov (United States)

2015-02-23

Physical Review Letters, 100(23):230501, June 2008. [20] Frederic Dupuis , Lea Kramer, Philippe Faist, Joseph M. Renes, and Renato Renner. Pro- ceedings...relative Rényi entropy. Journal of Mathematical Physics, 54(12):122201, December 2013. arXiv:1306.5358. 49 [25] Christopher A. Fuchs and Jeroen van de...Lennert, Frédéric Dupuis , Oleg Szehr, Serge Fehr, and Marco Tomamichel. On quantum Rényi entropies: a new definition and some properties. Journal

Influence of Life Style Factors on Barrett’s Oesophagus

Directory of Open Access Journals (Sweden)

A. Horna Strand

2014-01-01

Full Text Available Background. Since the incidence of adenocarcinoma of the oesophagus is rising, the prognosis is poor, and surveillance programs are expensive and mostly cost ineffective, there is a need to increase the knowledge of risk factors in Barrett’s oesophagus and oesophageal cancer in order to be able to give attention to medical prevention and/or surveillance programs. Aim. To study if there is a correlation between the development of Barrett’s oesophagus and GOR (gastro oesophageal reflux, family history of GOR, and life style factors, such as alcohol, smoking habits, and mental stress. Methods. Fifty-five consecutively selected patients with Barrett’s oesophagus (BO examined at Linköping University Hospital’s Oesophageal Laboratory were matched by sex, age, and duration of reflux symptoms with 55 GOR patients without Barrett’s oesophagus at the Oesophageal Laboratory. The medical charts in respective groups were examined for comparison of life style factors, mental stress, medication, duration of gastroesophageal acid reflux at 24 hr-pH-metry, and incidence of antireflux surgery and of adenocarcinoma of the oesophagus (ACO. Also, potential gender differences and diagnosis of ACO were studied. Results. Mean percentage reflux time on 24 hr-pH-metry was higher for the Barrett’s oesophagus group, 18% for women and 17% for men compared to 4% for women and 4% for men in the control group (P<0.05. Family history of GOR was more frequent in Barrett’s oesophagus patients (62% than in the control group (35% (P<0.05. Male patients with Barrett’s oesophagus had medical therapy for their GOR symptoms to a higher extent (38% than male controls (65% (P<0.05. No difference was found in the number of tobacco users or former tobacco users between Barrett’s oesophagus patients and controls. Barrett’s oesophagus patients had the same level of alcohol consumption and the same average BMI as the control subjects. Female patients with Barrett�

Analytical sensitivity of Tc99m radionuclide 'milk' scanning in the detection of gastro-oesophageal reflux

Energy Technology Data Exchange (ETDEWEB)

Paton, J.Y.; Nanayakkara, C.S.; Cosgriff, P.S.

1985-09-01

The analytical sensitivity of radionuclide ''milk'' scans for detecting gastro-oesophageal reflux (GOR) has been assessed using an in vitro simulation test. Five factors were found to affect the ability to detect simulated reflux: isotope concentration, absolute gamma camera sensitivity, absorber thickness overlying the ''oesophagus'' and volume and duration of reflux. We found that a critical volume-duration product must be exceeded for reflux to be detected. Radionuclide milk scanning appears to be much less sensitive in detecting transient events like GOR than might be expected from previously reported static simulation studies.

Research Article

African Journals Online (AJOL)

2016-09-01

Sep 1, 2016 ... for Rhinoceros/Grasshopper software is used as the main tool, given its ability to effectively calculate ... illuminating engineering, in architecture. ..... Renner, G. and A. Ekárt, Genetic algorithms in computer aided design.

Characteristics of cheeses manufactured using pepsin from adult ...

African Journals Online (AJOL)

Log in or Register to get access to full text downloads. ... (VP) was assessed using three types of cheeses namely Alpine, Tilister and Pastafilata (Pasta). ... pepsin waa an apprqpriate renner substitute for the small scale cheese processors.

New Religions and Globalization

DEFF Research Database (Denmark)

Bogen er en antologi af bidrag fra en konference under Research Network on New Religions (RENNER). Med bidrag fra specialister i nye religioner og globalisering fra hele verden introduceres empiriske resultater samt teoretiske og metodiske reflektioner over emnet....

Phylogeography of Indian populations of Panax bipinnatifidus Seem

African Journals Online (AJOL)

ksu

2011-11-16

Nov 16, 2011 ... Renner, 2011; Ali et al., 2009; Kocyan et al., 2007; Zhang et al., 2006; Jeffrey, 2005; ... information on population structure and genetic variation of D. palmatus is lacking. ..... Fine scale geographic structure, intra-individual ...

Effective energy management by combining gas turbine cycles and forward osmosis desalination process

International Nuclear Information System (INIS)

Park, Min Young; Shin, Serin; Kim, Eung Soo

2015-01-01

Highlights: • Innovative gas turbine system and FO integrated system was proposed. • The feasibility of the integrated system was analyzed thermodynamically. • GOR of the FO–gas turbine system is 17% higher than those of MED and MSF. • Waste heat utilization of the suggested system is 85.7%. • Water production capacity of the suggested system is 3.5 times higher than the MSF–gas turbine system. - Abstract: In the recent years, attempts to improve the thermal efficiency of the gas turbine cycles have been made. In order to enhance the energy management of the gas turbine cycle, a new integration concept has been proposed; integration of gas turbine cycle and forward osmosis desalination process. The combination of the gas turbine cycle and the forward osmosis (FO) desalination process basically implies the coupling of the waste heat from the gas turbine cycle to the draw solute recovery system in the FO process which is the most energy consuming part of the whole FO process. By doing this, a strong system that is capable of producing water and electricity with very little waste heat can be achieved. The feasibility of this newly proposed system was analyzed using UNISIM program and the OLI property package. For the analysis, the thermolytic draw solutes which has been suggested by other research groups have been selected and studied. Sensitivity analysis was conducted on the integration system in order to understand and identify the key parameters of the integrated system. And the integrated system was further evaluated by comparing the gain output ratio (GOR) values with the conventional desalination technologies such as multi stage flash (MSF) and multi effect distillation (MED). The suggested integrated system was calculated to have a GOR of 14.8, while the MSF and MED when integrated to the gas turbine cycle showed GOR value of 12. It should also be noted that the energy utilization of the suggested integrated system is significantly higher by 27

Integration of thermo-vapor compressor with multiple-effect evaporator

International Nuclear Information System (INIS)

Sharan, Prashant; Bandyopadhyay, Santanu

2016-01-01

Highlights: • Energy integration of thermo-vapor compressor with multiple-effect evaporator. • Proposed a new methodology for optimal placement of thermo-vapor compressor. • Extended Pinch Analysis for overall energy conservation. • Obtained simultaneous reduction in evaporator area requirement and energy consumption with optimal integration. - Abstract: Thermo-vapor compressor (TVC) is used for compressing the low-pressure vapor with the help of the high-pressure motive steam, to produce the medium pressure vapor. A substantial portion of energy may be conserved by integrating TVC with the multiple-effect evaporator (MEE). The common practice in desalination industry is to compress the vapor produced in the last effect of a MEE using TVC to reduce the overall motive steam requirement. Such integration does not necessarily guarantee energy optimality. The objective of the present work is to optimally integrate TVC with a MEE system to maximize the gain output ratio (GOR). GOR is defined as the ratio of the mass flow rate of vapor produced in MEE to the mass flow rate of the motive steam supplied to TVC. GOR is the measure of the energy efficiency of MEE system. Using the principles of Pinch Analysis and techniques of mathematical optimization, a new methodology for integration of TVC with MEE is proposed in this paper. This is the first analytical methodology to optimally integrate TVC with MEE, avoiding multiple simulations of the overall system. A Theorem is proposed to directly calculate the optimal location of TVC suction position. The proposed methodology gives the designer the freedom to design an MEE-TVC with minimum energy consumption and without carrying out the detailed simulation of the entire system. The methodology is demonstrated through the illustrative case studies for concentrating corn glucose, and freshwater production through thermal desalination. In the case of corn glucose, the optimal integration of TVC with 2-effect MEE resulted in

The pion quasiparticle in the low-temperature phase of QCD

Directory of Open Access Journals (Sweden)

Brandt Bastian B.

2018-01-01

Full Text Available We extend our previous studies [PhysRevD.90.054509, PhysRevD.92.094510] of the pion quasiparticle in the low-temperature phase of two-flavor QCD with support from chiral effective theory. This includes the analysis performed on a finite temperature ensemble of size 20 × 643 at T ≈ 151MeV and a lighter zero-temperature pion mass mπ ≈ 185 MeV. Furthermore, we investigate the Gell-Mann–Oakes-Renner relation at finite temperature and the Dey-Eletsky-Ioffe mixing theorem at finite quark mass.

Jahn-Teller effect: its history and applicability

International Nuclear Information System (INIS)

Teller, E.

1981-01-01

The interactions between Teller, Renner, Jahn and Landau which led to the formulation of the Jahn-Teller effect are discussed. The applicability of Jahn-Teller type of theory to superconductivity and the explanation proposed by the use of Goldstone particles are assessed

Företagens behov av resebyråtjänster : Case: Karleby Resebyrå Ab

OpenAIRE

Björkroth, Pinja

2016-01-01

Syftet med arbetet är att utreda orsaker till varför resebyråtjänster används samt utreda vilka andra möjliga behov företagen har gällande resebyråtjänster. Undersökningen görs till Karleby Resebyrå. I den teoretiska delen behandlas marknadsmixerna 4P, 4C och 7P, business to business och kundlojaliteten. Som forskningsmetod i arbetet användes en kvantitativ metod med hjälp av en webbenkät. Enkäten består av 21 frågor varav 11 är öppna frågor. Webbenkäten skickades per e-post till 50 föret...

Orthodontic-periodontal interactions: Orthodontic extrusion in interdisciplinary regenerative treatments.

Science.gov (United States)

Paolone, Maria Giacinta; Kaitsas, Roberto

2018-06-01

Orthodontics is a periodontal treatment. "Guided orthodontic regeneration" (GOR) procedures use orthodontic movements in perio-restorative patients. The GOR technique includes a guided orthodontic "soft tissue" regeneration (GOTR) and a guided orthodontic "bone" regeneration (GOBR) with a plastic soft tissue approach and a regenerating reality. The increased amount of soft tissue gained with orthodontic movement can be used for subsequent periodontal regenerative techniques. The increased amount of bone can as well improve primary implant stability and, eventually, simplify a GTR technique to regenerate soft tissues, to restore tooth with external resorption in aesthetic zone or to extract a tooth to create new hard-soft tissue for adjacent teeth. Copyright © 2018. Published by Elsevier Masson SAS.

Mis on peidus hariduse ajaloos? : haridus on seotud võimuga ja kuskil ei tule see esile nii selgelt kui Baltikumis / intervjueerinud Liina Lukas ; saksa keelest tõlkinud Reet Bender, Liina Uudelt ja Triinu Saks

Index Scriptorium Estoniae

2016-01-01

Vestlusringis osalejad Heinrich Bosse, Jürgen Joachimsthaler, Gert von Pistohlkors, Silke Pasewalck, Kaspar Renner ja Marju Luts-Sootak selgitavad Tartu ja Marburgi ülikooli koostöös toimuva rahvusvahelise konverentsi "Baltimaised haridusteed" ("Baltische Bildungsgescichte(n)") 20.-22.09.2016 eesmärke ja teemat

78 FR 37973 - Change of Address for Region 7; Technical Correction

Science.gov (United States)

2013-06-25

...: Authority: 42 U.S.C. 7414, 7601, 7671-7671q. Subpart B--Servicing of Motor Vehicle Air Conditioners 0 32..., Environmental Protection Agency, Air Planning and Development Branch, 11201 Renner Boulevard, Lenexa, Kansas... protection, Air pollution control, Coastal zone, Grant programs--environmental protection, Grant programs...

A generic record for Faika (Monimiaceae) in Papua New Guinea

NARCIS (Netherlands)

Takeuchi, W.N.; Renner, S.S.

2002-01-01

The genus Faika Philipson (Monimiaceae) consists of the single species F. villosa (Kaneh. & Hatus.) Philipson, previously known only from Irian Jaya between the Vogelkop Peninsula and the Cyclops Mts (Philipson, 1986). A recent identification by Renner (of Takeuchi 10349 from the April River; A,

Oral regurgitation after reflux provoking meals: a possible cause of dental erosion?

Science.gov (United States)

Bartlett, D W; Evans, D F; Smith, B G

1997-02-01

Certain foods and drinks such as alcohol, heavily spiced or fatty meals are known to provoke gastro-oesophageal reflux (GOR). This may give rise to symptoms of heartburn, epigastric pain and occasionally oral regurgitation of the gastric contents. Oral regurgitation of gastric juice is important in dentistry because of its association with dental erosion. This study measured oesophageal and oral reflux in 12 healthy subjects after a curry meal taken with alcohol 2 h before sleep. Each subject repeated the test with a bland non-reflux provoking control meal. GOR was measured by recording distal and proximal oesophageal pH on a dual channel, portable pH monitor. Oral pH was measured with a pH sensitive radio-telemetry capsule (RTC) held on the palate in a vacuum formed splint. Signals from the RTC were received by an aerial worn around the head. The pH change produced by GOR was estimated as the percentage time that pH (PTpH) was less than 4 in the distal oesophagus. Similarly, the PTpH was estimated reflux in only two subjects. In one of these subjects the bland meal provoked oral regurgitation with a PTpH < 5.5 of 13.5%. In the remaining subjects little oral regurgitation occurred.

Investigation and management of gastro-oesophageal reflux in United Kingdom neonatal intensive care units.

Science.gov (United States)

Rossor, Thomas; Andradi, Gwendolyn; Bhat, Ravindra; Greenough, Anne

2018-01-01

In 2004, wide variation in the investigation and management of gastro-oesophageal reflux (GOR) of infants on UK major neonatal units was demonstrated. Our aim was to resurvey neonatal practitioners to determine current practice and whether it was now evidence based. A questionnaire was sent to all 207 UK neonatal units. Responses were obtained from 84% of units. The most frequent 'investigation' was a trial of therapy (83% of units); pH studies were used in 38%, upper GI contrast studies in 19% and multichannel intraluminal impedance (MII)/pH studies in 5%. Only six units suggested a threshold for an abnormal pH study and two units for an abnormal MII study. Infants were commenced on antireflux medication without investigation always in 32% of units, often in 29%, occasionally in 19% and only never in 1%. Gaviscon was used as first line treatment in 60% of units, and other medications included ranitidine in 53%, thickening agents in 27%, proton pump inhibitors in 23%, domperidone in 22% and erythromycin in 6%. There remains a wide variation in diagnostic and treatment strategies for infants with suspected GOR on neonatal intensive care units, emphasising the need for randomised trials to determine appropriate GOR management. ©2017 Foundation Acta Paediatrica. Published by John Wiley & Sons Ltd.

The prevalence of dental erosion in Nigerian patients with gastro-oesophageal reflux disease

Directory of Open Access Journals (Sweden)

Agbakwuru Elugwaraonu A

2005-03-01

Full Text Available Abstract Background In various people of the Western world, gastro-oesophageal reflux (GOR has been reported to be a common problem. Various studies have also assessed the relationship between GOR and dental erosion. The authors are not aware of such studies in Nigerians. It is therefore the aims of the present study to estimate the prevalence of GOR; to estimate the prevalence of dental erosion in patients with GORD; to document the oral findings in patients diagnosed with GORD and to compare these findings with previous studies elsewhere. Methods A total of 225 subjects comprising of 100 volunteers and 125 patients diagnosed with GORD were involved in this study. History of gastric juice regurgitation and heartburn were recorded. Oral examination to quantify loss of tooth structure was done using the tooth wear index (TWI designed by Smith and Knight (1984. Results Twenty patients with GORD presented with dental erosion in the maxillary anterior teeth with TWI scores ranging from 1–3. The prevalence of erosion was found to be statistically significant between GORD patients (16% and control (5% (p 0.05. Conclusion The present study supports the consideration of dental erosion as the extra-oesophageal manifestation of GORD. However the association between GORD and burning mouth sensation needs more investigation.

Microwave Deposition of Palladium Catalysts on Graphite Spheres and Reduced Graphene Oxide Sheets for Electrochemical Glucose Sensing.

Science.gov (United States)

Xie, Jian-De; Gu, Siyong; Zhang, Houan

2017-09-21

This work outlines a synthetic strategy inducing the microwave-assisted synthesis of palladium (Pd) nanocrystals on a graphite sphere (GS) and reduced graphene oxide (rGO) supports, forming the Pd catalysts for non-enzymatic glucose oxidation reaction (GOR). The pulse microwave approach takes a short period (i.e., 10 min) to fast synthesize Pd nanocrystals onto a carbon support at 150 °C. The selection of carbon support plays a crucial role in affecting Pd particle size and dispersion uniformity. The robust design of Pd-rGO catalyst electrode displays an enhanced electrocatalytic activity and sensitivity toward GOR. The enhanced performance is mainly attributed to the synergetic effect that combines small crystalline size and two-dimensional conductive support, imparting high accessibility to non-enzymatic GOR. The rGO sheets serve as a conductive scaffold, capable of fast conducting electron. The linear plot of current response versus glucose concentration exhibits good correlations within the range of 1-12 mM. The sensitivity of the Pd-rGO catalyst is significantly enhanced by 3.7 times, as compared to the Pd-GS catalyst. Accordingly, the Pd-rGO catalyst electrode can be considered as a potential candidate for non-enzymatic glucose biosensor.

Outcome of gastro-oesophageal reflux-related respiratory manifestations after laparoscopic fundoplication.

Science.gov (United States)

Adaba, Franklin; Ang, Chin W; Perry, Anthony; Wadley, Martin S; Robertson, Charles S

2014-01-01

Patients with refractory respiratory symptoms related to gastro-oesophageal reflux disease (GORD) such as asthma and cough are being referred for laparoscopic fundoplication (LFP), as recommended by the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES). However there are limited data regarding symptomatic response to fundoplication in this group of patients. A 7 year retrospective review was performed to study the efficacy of LFP in the treatment of patients with respiratory manifestations of GORD. Patients were followed up from 4 to 6 weeks (short-term) to 6-12 months (long-term) post-operatively. Of 208 patients who underwent LFP, 73 (35%) patients were eligible for inclusion into the study. 55 (75%) patients had improved respiratory symptoms at short-term follow-up. At long-term follow-up, 7 of these patients had recurrence of respiratory symptoms, while 4 patients had improvement not initially apparent. No significant predictive factor for the success or failure of surgery was identified. 190 (91%) of 208 patients had symptomatic improvement in GORD at short-term follow-up. LFP is effective with the response rates over 75% in the control of respiratory manifestation of GORD, compared to over 91% response rate in the control GOR symptoms alone. More research is needed to identify factors to aid patient selection to improve response rate. Copyright © 2014 Surgical Associates Ltd. Published by Elsevier Ltd. All rights reserved.

Spatial distribution of turbulence in the Wendelstein 7-AS stellarator (invited paper)

DEFF Research Database (Denmark)

Basse, N.P.; Michelsen, Poul; Zoletnik, S.

2002-01-01

In this paper measurements of short wavelength electron density fluctuations using collective scattering of infrared light are presented. The Wendelstein 7-AS (W7-AS) stellarator (Renner H et al 1989 Plasma Phys. Control. Fusion 31 1579) and the diagnostic are briefly described. A series of plasm...

The Effect of Cigarette Smoking on Gingival Crevicular Fluid Flow.

Science.gov (United States)

1986-01-01

status of". . * overdenture abutments from initial periodontal therapy through denture insertion, by Stoller et al. to evaluate the efficacy of an...104. Renner, R.P.; Foerth, D.; and Pesserillo, E.: Maintenance of root integrity and periodontal health under overdentures . Gen Dent 26:42-46, 1978

Bildskapande i relation till genus i förskolans verksamhet : Att skapa sig själv och genus

OpenAIRE

Brännlund, Angelika

2018-01-01

Studiens syfte är att bidra till ökad medvetenhet för verksamma inom förskolans område kring frågor som rör pedagogers förhållningssätt kring relationen mellan bildskapande och genus, men även hur dessa förhållningssätt kan påverka barnens möjligheter i deras bildskapande. En viktig fråga som burits med från starten av arbetet och som lyser igenom i resultatdelen har varit: Vilka möjligheter att förhålla sig till bildskapande och genus kan uppstå om ett kritiskt sätt att tänka kring könsstere...

Iodine-123 iodobenzofuran (I-123 IBF) SPECT in patients with parkinsonism

Energy Technology Data Exchange (ETDEWEB)

Nakabeppu, Yoshiaki; Nakajo, Masayuki; Mitsuda, Mitsuru; Tsuchimochi, Shinsaku; Tani, Atsushi; Osame, Mitsuhiro [Kagoshima Univ. (Japan). Faculty of Medicine

1999-12-01

Iodine-123 benzofuran (I-123 IBF) is a dopaminergic antagonist which is suitable for SPECT imaging of D2 receptors. The purpose of this study is to evaluate the potential usefulness of semi-quantitative parameters obtained from brain SPECT data of I-123 IBF for differential diagnosis in patients with parkinsonism (PN). Subjects were 10 patients with PN: 2 patients with striato-nigral degeneration (SND), 5 patients with Parkinson's disease (PD), 2 patients with progressive supranuclear palsy (PSP) and one patient with olivo-ponto-cerebellar atrophy (OPCA). The data were acquired with a triple-head gamma camera at 2 hours after intravenous injection of 167 MBq of I-123 IBF. Transverse images were reconstructed by means of filtered backprojection, and attenuation correction was performed by Chang's method ({mu}=0.08). The basal ganglia-to-frontal cortex ratio (GFR) and the basal ganglia-to-occipital cortex ratio (GOR) on slices of 5 different thicknesses were calculated. The GFR and GOR were lower in the SND group than in the other disease groups in all slices with different thicknesses (7.2 mm, 14.4 mm, 21.6 mm, 28.8 mm and 43.2 mm). The semiquantitative parameters (GFR and GOR) obtained from brain SPECT data at 2 hours after intravenous injection of I-123 IBF may be useful for differential diagnosis in patients with PN. (author)

An Innovative VHTR Waste Heat Integration with Forward Osmosis Desalination Process

Energy Technology Data Exchange (ETDEWEB)

Park, Min Young; Kim, Eung Soo [Seoul National Univ., Seoul (Korea, Republic of)

2013-10-15

The integration concept implies the coupling of the waste heat from VHTR with the draw solute recovery system of FO process. By integrating these two novel technologies, advantages, such as improvement of total energy utilization, and production of fresh water using waste heat, can be achieved. In order to thermodynamically analyze the integrated system, the FO process and power conversion system of VHTR are simulated using chemical process software UNISIM together with OLI property package. In this study, the thermodynamic analysis on the VHTR and FO integrated system has been carried out to assess the feasibility of the concept. The FO process including draw solute recovery system is calculated to have a higher GOR compared to the MSF and MED when reasonable FO performance can be promised. Furthermore, when FO process is integrated with the VHTR to produce potable water from waste heat, it still shows a comparable GOR to typical GOR values of MSF and MED. And the waste heat utilization is significantly higher in FO than in MED and MSF. This results in much higher water production when integrated to the same VHTR plant. Therefore, it can be concluded that the suggested integrated system of VHTR and FO is a very promising and strong system concept which has a number of advantages over conventional technologies.

Iodine-123 iodobenzofuran (I-123 IBF) SPECT in patients with parkinsonism

International Nuclear Information System (INIS)

Nakabeppu, Yoshiaki; Nakajo, Masayuki; Mitsuda, Mitsuru; Tsuchimochi, Shinsaku; Tani, Atsushi; Osame, Mitsuhiro

1999-01-01

Iodine-123 benzofuran (I-123 IBF) is a dopaminergic antagonist which is suitable for SPECT imaging of D2 receptors. The purpose of this study is to evaluate the potential usefulness of semi-quantitative parameters obtained from brain SPECT data of I-123 IBF for differential diagnosis in patients with parkinsonism (PN). Subjects were 10 patients with PN: 2 patients with striato-nigral degeneration (SND), 5 patients with Parkinson's disease (PD), 2 patients with progressive supranuclear palsy (PSP) and one patient with olivo-ponto-cerebellar atrophy (OPCA). The data were acquired with a triple-head gamma camera at 2 hours after intravenous injection of 167 MBq of I-123 IBF. Transverse images were reconstructed by means of filtered backprojection, and attenuation correction was performed by Chang's method (μ=0.08). The basal ganglia-to-frontal cortex ratio (GFR) and the basal ganglia-to-occipital cortex ratio (GOR) on slices of 5 different thicknesses were calculated. The GFR and GOR were lower in the SND group than in the other disease groups in all slices with different thicknesses (7.2 mm, 14.4 mm, 21.6 mm, 28.8 mm and 43.2 mm). The semiquantitative parameters (GFR and GOR) obtained from brain SPECT data at 2 hours after intravenous injection of I-123 IBF may be useful for differential diagnosis in patients with PN. (author)

Turbulence at the transition to the high density H-mode in Wendelstein 7-AS plasmas

DEFF Research Database (Denmark)

Basse, N.P.; Zoletnik, S.; Baumel, S.

2003-01-01

Recently a new improved confinement regime was found in the Wendelstein 7-AS (W7-AS) stellarator (Renner H. et al 1989 Plasma Phys. Control. Fusion 31 1579). The discovery of this high density high confinement mode (HDH-mode) was facilitated by the installation of divertor modules. In this paper,...

Uuemat kirjandusteadust Saksast (4) : Böhlau esitleb Austriat / Jaan Undusk

Index Scriptorium Estoniae

Undusk, Jaan, 1958-

1996-01-01

Arvustus: Hall, Murray G.; Renner, Gerhard. Handbuch der Nachlässe und Sammlungen österreichischer Autoren. 2., neu bearbeitete und erweiterte Auflage. Wien - Köln - Weimar : Böhlau Verlag, 1995 ; Kontinent Bernhard : Zur Thomas - Bernhard - Rezeption in Europa / Hrsg. Wolfram Bayer, Claude Porcell. Wien - Köln - Weimar : Böhlau Verlag, 1995

Contactless transport of matter in the first five resonance modes of a line-focused acoustic manipulator.

Science.gov (United States)

Foresti, Daniele; Nabavi, Majid; Poulikakos, Dimos

2012-02-01

The first five resonance modes for transport of matter in a line-focused acoustic levitation system are investigated. Contactless transport was achieved by varying the height between the radiating plate and the reflector. Transport and levitation of droplets in particular involve two limits of the acoustic forces. The lower limit corresponds to the minimum force required to overcome the gravitational force. The upper limit corresponds to the maximum acoustic pressure beyond which atomization of the droplet occurs. As the droplet size increases, the lower limit increases and the upper limit decreases. Therefore to have large droplets levitated, relatively flat radiation pressure amplitude during the translation is needed. In this study, using a finite element model, the Gor'kov potential was calculated for different heights between the reflector and the radiating plate. The application of the Gor'kov potential was extended to study the range of droplet sizes for which the droplets can be levitated and transported without atomization. It was found that the third resonant mode (H(3)-mode) represents the best compromise between high levitation force and smooth pattern transition, and water droplets of millimeter radius can be levitated and transported. The H(3)-mode also allows for three translation lines in parallel. © 2012 Acoustical Society of America

Research

African Journals Online (AJOL)

raoul

2011-12-14

Dec 14, 2011 ... RFELTP is funded by GOR, the US Presidents Emergency Plan ... a public health workforce that can operate multiple surveillance and response ... medicine, biomedical sciences, biostatistics, or clinical psychology; 3 years of.

Molecular marker systems for Oenothera genetics.

Science.gov (United States)

Rauwolf, Uwe; Golczyk, Hieronim; Meurer, Jörg; Herrmann, Reinhold G; Greiner, Stephan

2008-11-01

The genus Oenothera has an outstanding scientific tradition. It has been a model for studying aspects of chromosome evolution and speciation, including the impact of plastid nuclear co-evolution. A large collection of strains analyzed during a century of experimental work and unique genetic possibilities allow the exchange of genetically definable plastids, individual or multiple chromosomes, and/or entire haploid genomes (Renner complexes) between species. However, molecular genetic approaches for the genus are largely lacking. In this study, we describe the development of efficient PCR-based marker systems for both the nuclear genome and the plastome. They allow distinguishing individual chromosomes, Renner complexes, plastomes, and subplastomes. We demonstrate their application by monitoring interspecific exchanges of genomes, chromosome pairs, and/or plastids during crossing programs, e.g., to produce plastome-genome incompatible hybrids. Using an appropriate partial permanent translocation heterozygous hybrid, linkage group 7 of the molecular map could be assigned to chromosome 9.8 of the classical Oenothera map. Finally, we provide the first direct molecular evidence that homologous recombination and free segregation of chromosomes in permanent translocation heterozygous strains is suppressed.

Eleonora Duse interpreta Gor'kij (Parigi-Milano, ottobre 1905

Directory of Open Access Journals (Sweden)

Maria Pia Pagani

2013-06-01

Full Text Available Questo contributo porta alla luce alcuni problemi relativi a traduzione e allestimento de I bassifondi (L’albergo dei poveri di Maksim Gor’kij – l’unico dramma russo che Eleonora Duse riuscì a includere nel suo repertorio. La grande attrice lo portò in scena due volte, a distanza di pochi giorni, al Théâtre de l’Oeuvre di Parigi con la compagnia di Aurelien Lugné-Poe (23 ottobre 1905, e al Teatro Manzoni di Milano con la compagnia Talli-Gramatica-Calabresi (28 ottobre 1905. Il critico Gaio (pseudonimo di Adolfo Orvieto assistette a entrambe le rappresentazioni e scrisse un’attenta recensione per «Il Marzocco» evidenziandone le differenze.

SVM-PB-Pred: SVM based protein block prediction method using sequence profiles and secondary structures.

Science.gov (United States)

Suresh, V; Parthasarathy, S

2014-01-01

We developed a support vector machine based web server called SVM-PB-Pred, to predict the Protein Block for any given amino acid sequence. The input features of SVM-PB-Pred include i) sequence profiles (PSSM) and ii) actual secondary structures (SS) from DSSP method or predicted secondary structures from NPS@ and GOR4 methods. There were three combined input features PSSM+SS(DSSP), PSSM+SS(NPS@) and PSSM+SS(GOR4) used to test and train the SVM models. Similarly, four datasets RS90, DB433, LI1264 and SP1577 were used to develop the SVM models. These four SVM models developed were tested using three different benchmarking tests namely; (i) self consistency, (ii) seven fold cross validation test and (iii) independent case test. The maximum possible prediction accuracy of ~70% was observed in self consistency test for the SVM models of both LI1264 and SP1577 datasets, where PSSM+SS(DSSP) input features was used to test. The prediction accuracies were reduced to ~53% for PSSM+SS(NPS@) and ~43% for PSSM+SS(GOR4) in independent case test, for the SVM models of above two same datasets. Using our method, it is possible to predict the protein block letters for any query protein sequence with ~53% accuracy, when the SP1577 dataset and predicted secondary structure from NPS@ server were used. The SVM-PB-Pred server can be freely accessed through http://bioinfo.bdu.ac.in/~svmpbpred.

Photoinduced Partial Unfolding of Tubulin Bound to Meso-tetrakis(sulfonatophenyl) Porphyrin Leads to Inhibition of Microtubule Formation In Vitro

Science.gov (United States)

2013-07-30

Bio- chemistry 44, 524–536 (2005). [4] M. Loweneck, A. G. Milbradt, C. Root , H. Satzger, W. Zinth, L. Moroder, and C. Renner, Biophys. J. 90, 2099–2108...H. Nettles , B. Cornett, K. H. Downing, and E. Nogales, Proc. Natl. Acad. Sci. 98, 5312–5316 (2001). B. McMicken et al.: Photoinduced unfolding of

Pramana – Journal of Physics | Indian Academy of Sciences

Indian Academy of Sciences (India)

Home; Journals; Pramana – Journal of Physics. A C Gossard. Articles written in Pramana – Journal of Physics. Volume 67 Issue 1 July 2006 pp 199-205. Ballistic transport in semiconductor nanostructures: From quasi-classical oscillations to novel THz-emitters · G H Döhler M Eckardt A Schwanhäußer F Renner S Malzer S ...

Rigorous study of the gap equation for an inhomogeneous superconducting state near T/sub c/

International Nuclear Information System (INIS)

Hu, C.R.

1975-01-01

An analytical study of the gap equation in the Bogoliubov formulation is presented. The normal-superconducting phase boundary is simulated by the expression Δ (R/sup =/) = Δ/sub infinity/ tanh / α Δ/sub infinity/z/v/sub f/) theta(z) where Δ/sub infinity/(t) is the equilibrium gap, theta (z) a unit step function and v/sub f/ the Fermi velocity. The Bogoliubov-de Gennes equations are solved in a nonperturbative WKBJ approximation. The gap equation is expanded near T/sub c/ in powers of Δ/sub infinity/ and the major term is of the same order as that given by the Ginzburg-Landau-Gor'kov approximation. Discrepancies in the two values are discussed in detail. It is concluded that the present technique reproduces the Ginzburg-Landau-Gor'kov results except within a BCS coherence length. 25 references

On quantum Rényi entropies: A new generalization and some properties

International Nuclear Information System (INIS)

Müller-Lennert, Martin; Dupuis, Frédéric; Szehr, Oleg; Fehr, Serge; Tomamichel, Marco

2013-01-01

The Rényi entropies constitute a family of information measures that generalizes the well-known Shannon entropy, inheriting many of its properties. They appear in the form of unconditional and conditional entropies, relative entropies, or mutual information, and have found many applications in information theory and beyond. Various generalizations of Rényi entropies to the quantum setting have been proposed, most prominently Petz's quasi-entropies and Renner's conditional min-, max-, and collision entropy. However, these quantum extensions are incompatible and thus unsatisfactory. We propose a new quantum generalization of the family of Rényi entropies that contains the von Neumann entropy, min-entropy, collision entropy, and the max-entropy as special cases, thus encompassing most quantum entropies in use today. We show several natural properties for this definition, including data-processing inequalities, a duality relation, and an entropic uncertainty relation

Reconstruction of specific mass balance for glaciers in Western ...

Indian Academy of Sciences (India)

Seasonal sensitivity characteristics (SSCs) were developed for Naradu, Shaune Garang, Gor Garang and Gara glaciers, Western Himalaya to quantify the changes in mean specific mass balance using monthly temperature and precipitation perturbations. The temperature sensitivities were observed high during summer ...

HEAVY-OIL PRODUCTION USING EMULSION FLOODING

African Journals Online (AJOL)

user

... American Petroleum Institute, EOR = Enhanced Oil Recovery, GOR = Gas Oil Ratio ... concentration, 166.003 is the constant (molar mass of ... (molar mass of CaCO3),1M is the constant value. ... volume of prepared oil-in-water emulsion, that.

Feed thickener for infants up to six months of age with gastro-oesophageal reflux.

Science.gov (United States)

Kwok, T'ng Chang; Ojha, Shalini; Dorling, Jon

2017-12-05

Gastro-oesophageal reflux (GOR) is common in infants, and feed thickeners are often used to manage it in infants as they are simple to use and perceived to be harmless. However, conflicting evidence exists to support the use of feed thickeners. To evaluate the use of feed thickeners in infants up to six months of age with GOR in terms of reduction in a) signs and symptoms of GOR, b) reflux episodes on pH probe monitoring or intraluminal impedance or a combination of both, or c) histological evidence of oesophagitis. We used the standard search strategy of the Cochrane Neonatal Review Group to search the Cochrane Central Register of Controlled Trials (CENTRAL 2016, Issue 2), MEDLINE via PubMed (1966 to 22 November 2016), Embase (1980 to 22 November 2016), and CINAHL (1982 to 22 November 2016). We also searched clinical trials databases, conference proceedings, and the reference lists of retrieved articles for randomised controlled trials. We included randomised controlled trials if they examined the effects of feed thickeners as compared to unthickened feeds (no treatment or placebo) in treating GOR in term infants up to six months of age or six months of corrected gestational age for those born preterm. Two review authors independently identified eligible studies from the literature search. Two review authors independently performed data extraction and quality assessments of the eligible studies. Differences in opinion were resolved by discussion with a third review author, and consensus was reached among all three review authors. We used the GRADE approach to assess the quality of the evidence. Eight trials recruiting a total of 637 infants met the inclusion criteria for the systematic review. The infants included in the review were mainly formula-fed term infants. The trials were of variable methodological quality. Formula-fed term infants with GOR on feed thickeners had nearly two fewer episodes of regurgitation per day (mean difference -1.97 episodes per day

The effect of the stage of the ovarian cycle (anoestrus or dioestrus) and of pregnancy on the incidence of gastro-oesophageal reflux in dogs undergoing ovariohysterectomy.

Science.gov (United States)

Anagnostou, Tilemahos L; Savvas, Ioannis; Kazakos, George M; Ververidis, Haralabos N; Psalla, Dimitra; Kostakis, Charalampos; Skepastianos, Petros; Raptopoulos, Dimitris

2015-09-01

To investigate the potential association of increased blood progesterone (P4 ) concentrations and/or late pregnancy with the incidence of gastro-oesophageal reflux (GOR), in healthy bitches undergoing ovariohysterectomy under general anaesthesia during anoestrus or dioestrus or during the second half of pregnancy. Prospective observational study. Ninety-four healthy, female, dogs, aged 1-8 years presented for elective ovariohysterectomy. Non-pregnant animals were classified into group A (anoestrus) (n = 35) if blood P4 concentration was sufficiently low or group D (dioestrus) (n = 26) if blood P4 concentration was sufficiently high. All animals in the second half of pregnancy were classified into group P (n = 33). Acepromazine (0.05 mg kg(-1) ) was administered intramuscularly as preanaesthetic medication, and sodium thiopental (10 mg kg(-1) , with additional doses if needed) was administered intravenously (IV) for induction of anaesthesia. After endotracheal intubation, halothane (1.1-1.3% end-tidal concentration) in oxygen was used for maintenance of anaesthesia. Lower oesophageal pH was monitored continuously throughout surgery using a pH-measuring probe. Reflux was considered to have occurred whenever pH values of >7.5 (alkaline reflux) or reflux) were recorded. On completion of surgery, carprofen (4 mg kg(-1) ) was administered IV. Further administration of analgesics post-operatively was dictated by visual analogue scale pain scoring. Acid GOR was observed in five of 26 dogs in group D, six of 35 group A, and 12 of 33 group P (p = 0.152). The incidence of GOR in group P approached statistical significance and was higher than the incidence in the combined group A + D (one sided p = 0.044, two sided p = 0.077). In dogs undergoing ovariohysterectomy, GOR during anaesthesia occurs with a high incidence in dogs in the second half of pregnancy compared to non-pregnant animals during anoestrus or dioestrus. Measures could be taken in such cases

COmmunications and Networking with QUantum operationally Secure Technology for Maritime Deployment (CONQUEST)

Science.gov (United States)

2016-12-02

in Computer Science, 4392:456–478, February 2007. arXiv:quant-ph/0608199. [15] Renato Renner, Nicolas Gisin, and Barbara Kraus. Information-theoretic...Letters 18, 1896-1898 (1993). [2] R. Nair, S. Guha, and Si-Hui Tan , ”Realizable receivers for discriminating arbitrary coherent-state waveforms and multi-copy quantum states near the quantum limit”, Phys. Rev. A 89, 032318 (2014).

Flavoprotein-mediated tellurite reduction: structural basis and applications to the synthesis of tellurium-containing nanostructures

Directory of Open Access Journals (Sweden)

Mauricio Arenas-Salinas

2016-07-01

Full Text Available The tellurium oxyanion tellurite (TeO32- is extremely harmful for most organisms. It has been suggested that a potential bacterial tellurite resistance mechanism would consist of an enzymatic, NAD(PH-dependent, reduction to the less toxic form elemental tellurium (Te0. To date, a number of enzymes such as catalase, type II NADH dehydrogenase and terminal oxidases from the electron transport chain, nitrate reductases, and dihydrolipoamide dehydrogenase (E3, among others, have been shown to display tellurite-reducing activity. This activity is generically referred to as tellurite reductase (TR. Bioinformatic data resting on some of the abovementioned enzymes enabled the identification of common structures involved in tellurite reduction including vicinal catalytic cysteine residues and the FAD/NAD(P+-binding domain, which is characteristic of some flavoproteins. Along this line, thioredoxin reductase (TrxB, alkyl hydroperoxide reductase (AhpF, glutathione reductase (GorA, mercuric reductase (MerA, NADH: flavorubredoxin reductase (NorW, dihydrolipoamide dehydrogenase, and the putative oxidoreductase YkgC from Escherichia coli or environmental bacteria were purified and assessed for TR activity. All of them displayed in vitro TR activity at the expense of NADH or NADPH oxidation. In general, optimal reducing conditions occurred around pH 9-10 and 37 °C.Enzymes exhibiting strong TR activity produced Te-containing nanostructures (TeNS. While GorA and AhpF generated TeNS of 75 nm average diameter, E3 and YkgC produced larger structures (> 100 nm. Electron-dense structures were observed in cells over-expressing genes encoding TrxB, GorA and YkgC.

A parametric study of a humidification dehumidification (HDH) desalination system using low grade heat sources

International Nuclear Information System (INIS)

He, W.F.; Han, D.; Yue, C.; Pu, W.H.

2015-01-01

Highlights: • The HDH desalination system coupling with the waste heat plate LGHC is proposed. • Performance of the desalination system and the plate LGHC is presented. • Influence from the operation pressure on the system performance is investigated. • Gained investment ratio is proposed to characterize the desalination system consumption. - Abstract: Humidification dehumidification (HDH) desalination system is applicable to recover the low grade heat source to heat the seawater before the humidifier. In the paper, plate heat exchangers are integrated to recover the waste heat from the exhaust in the water heated closed air open water (CAOW) HDH desalination system. The performance of the HDH desalination system as well as the plate type of low grade heat collector (LGHC) is investigated at different operation pressures. Gain investment ratio (GIR) is proposed and defined to depict the overall consumption of the whole system. The simulation results show that the modified heat capacity ratio of the dehumidifier (HCRd) is vital for the performance of the HDH desalination system as well as the plate LGHC with a top value of gain output ratio (GOR) at the balance point, HCRd = 1, and the maximum GOR, GOR = 2.44, results from the raised pressure of p = 0.15 MPa. Furthermore, taking the cost for the heat transfer surface area of the LGHC and the air and seawater pipes into consideration, it is revealed that the conditions, HCRd > 1, are more economical due to the increase of GIR, which indicates the profit of unit consumption is more significant.

A Mobilização de Capacidades Dinâmicas na Lojas Renner

Directory of Open Access Journals (Sweden)

Adalberto Escalona Gonçalves Garcia

2014-03-01

Full Text Available O artigo tem como objetivo analisar a trajetória de uma das empresas varejistas de maior destaque no mercado brasileiro, através de um estudo longitudinal que enfatiza a mobilização de seus recursos e capacidades ao longo de 90 anos de história. Explorando o conceito de capacidades dinâmicas, descrevem-se as ações estratégicas empreendidas em momentos de crescimento e de crise. Para tanto, foram realizadas entrevistas em profundidade com dez tomadores de decisão que vivenciaram diferentes momentos da história da empresa e que desempenharam distintos papéis nos últimos 50 anos. Além disso, dado o aspecto histórico da pesquisa, especial ênfase foi dada à obtenção e à análise de dados secundários. Boletins internos, comunicados ao mercado de capitais, relatórios anuais, demonstrações financeiras, artigos da mídia, entre outras fontes, totalizaram mais cerca de 600 páginas de material analisado. No que diz respeito às contribuições teóricas, a pesquisa identificou a existência de quatro mecanismos de mobilização das capacidades dinâmicas: a alavancagem, a criação, o acesso e a liberação de recursos e de capacidades. Com relação às implicações gerenciais, o estudo mostrou que habilidades dos gestores vinculadas seletivamente aos quatro mecanismos de mobilização se tornam essenciais na condução de uma empresa em seus momentos, tanto de estabilidade e crescimento, quanto de turbulência. DOI:10.5585/riae.v13i1.2029

Postoperative Feeding Difficulties after Repair of Congenital ...

African Journals Online (AJOL)

Of these, 24 (37.5%) developed feeding difficulties in the immediate post operative period. The causes of the feeding difficulties were Gastro-oesophageal reflux (GOR) 9, Recurrent diaphragmatic hernia 8, Adhesive intestinal obstruction 4, Poor intestinal motility 2, Campylobacter enteritis, 1, Hypertrophic pyloric stenosis, 1.

On quantum Rényi entropies: A new generalization and some properties

Energy Technology Data Exchange (ETDEWEB)

Müller-Lennert, Martin [Department of Mathematics, ETH Zurich, 8092 Zürich (Switzerland); Dupuis, Frédéric [Department of Computer Science, Aarhus University, 8200 Aarhus (Denmark); Szehr, Oleg [Department of Mathematics, Technische Universität München, 85748 Garching (Germany); Fehr, Serge [CWI (Centrum Wiskunde and Informatica), 1090 Amsterdam (Netherlands); Tomamichel, Marco [Centre for Quantum Technologies, National University of Singapore, Singapore 117543 (Singapore)

2013-12-15

The Rényi entropies constitute a family of information measures that generalizes the well-known Shannon entropy, inheriting many of its properties. They appear in the form of unconditional and conditional entropies, relative entropies, or mutual information, and have found many applications in information theory and beyond. Various generalizations of Rényi entropies to the quantum setting have been proposed, most prominently Petz's quasi-entropies and Renner's conditional min-, max-, and collision entropy. However, these quantum extensions are incompatible and thus unsatisfactory. We propose a new quantum generalization of the family of Rényi entropies that contains the von Neumann entropy, min-entropy, collision entropy, and the max-entropy as special cases, thus encompassing most quantum entropies in use today. We show several natural properties for this definition, including data-processing inequalities, a duality relation, and an entropic uncertainty relation.

A prototypical non-malignant epithelial model to study genome dynamics and concurrently monitor micro-RNAs and proteins in situ during oncogene-induced senescence

DEFF Research Database (Denmark)

Komseli, Eirini Stavroula; Pateras, Ioannis S.; Krejsgaard, Thorbjørn

2018-01-01

limitations achieving for the first time simultaneous detection of both a micro-RNA and a protein in the biological context of cellular senescence, utilizing the new commercially available SenTraGorTM compound. The method was applied in a prototypical human non-malignant epithelial model of oncogene...

An impossibility theorem for parameter independent hidden variable theories

Science.gov (United States)

Leegwater, Gijs

2016-05-01

Recently, Roger Colbeck and Renato Renner (C&R) have claimed that '[n]o extension of quantum theory can have improved predictive power' (Colbeck & Renner, 2011, 2012b). If correct, this is a spectacular impossibility theorem for hidden variable theories, which is more general than the theorems of Bell (1964) and Leggett (2003). Also, C&R have used their claim in attempt to prove that a system's quantum-mechanical wave function is in a one-to-one correspondence with its 'ontic' state (Colbeck & Renner, 2012a). C&R's claim essentially means that in any hidden variable theory that is compatible with quantum-mechanical predictions, probabilities of measurement outcomes are independent of these hidden variables. This makes such variables otiose. On closer inspection, however, the generality and validity of the claim can be contested. First, it is based on an assumption called 'Freedom of Choice'. As the name suggests, this assumption involves the independence of an experimenter's choice of measurement settings. But in the way C&R define this assumption, a no-signalling condition is surreptitiously presupposed, making the assumption less innocent than it sounds. When using this definition, any hidden variable theory violating parameter independence, such as Bohmian Mechanics, is immediately shown to be incompatible with quantum-mechanical predictions. Also, the argument of C&R is hard to follow and their mathematical derivation contains several gaps, some of which cannot be closed in the way they suggest. We shall show that these gaps can be filled. The issue with the 'Freedom of Choice' assumption can be circumvented by explicitly assuming parameter independence. This makes the result less general, but better founded. We then obtain an impossibility theorem for hidden variable theories satisfying parameter independence only. As stated above, such hidden variable theories are impossible in the sense that any supplemental variables have no bearing on outcome probabilities

Reconstruction of specific mass balance for glaciers in Western ...

Indian Academy of Sciences (India)

Vinay Kumar Gaddam

2017-06-12

Jun 12, 2017 ... temperatures and precipitation estimates of ERA 20CM ensemble climate reanalysis datasets to reconstruct the specific mass balance for a period of 110 years, between 1900 and 2010. Mass balance estimates suggest that the Shaune Garang, Gor-Garang and Gara glaciers have experienced both ...

Experimental investigation of a multi-stage humidification-dehumidification desalination system heated directly by a cylindrical Fresnel lens solar concentrator

International Nuclear Information System (INIS)

Wu, Gang; Zheng, Hongfei; Ma, Xinglong; Kutlu, Cagri; Su, Yuehong

2017-01-01

Highlights: • A solar desalination system heated directly by curved Fresnel lens concentrator. • Desalination system is based on the humidification-dehumidification process. • Four-stage multi-effect desalination system is proposed. • Condensation latent heat and residual heat in the brine are recycled and reutilized. • The maximum yield and GOR of the unit can reach 3.4 kg/h and 2.1, respectively. - Abstract: This study demonstrates a multi-stage humidification-dehumidification (HDH) solar desalination system heated directly by a cylindrical Fresnel lens concentrator. In this novel system, the solar radiation is sent directly into desalination unit. That is to say, the solar receiver and the evaporator of the system are a whole in which the black fillers in seawater directly absorb the concentrated solar lights to heat the seawater film to produce the evaporation. The configuration and working processes of the proposed design are described in detail. In order to analyze its performance, a small solar desalination prototype unit incorporated with a cylindrical Fresnel lens concentrator was designed and built in our laboratory. Using three-stage isothermal tandem heating mode, the variation of the fresh water yield rate and the absorber temperature with time were measured experimentally and were compared with theoretical calculations. The experimental results show that the maximum yield of the unit is about 3.4 kg/h, the maximum gained output ratio (GOR) is about 2.1, when the average intensity of solar radiation is about 867 W/m"2. This study indicates that the proposed system has the characteristics of compact structure and GOR high. It still can be improved when the design and operation are optimized further.

Journal of Chemical Sciences | Indian Academy of Sciences

Indian Academy of Sciences (India)

Both of them are having bent ground state (1A1) equilibrium geometries, but there is a huge difference (∼ 1.93 eV) between their energy barrier to linearity. Their first two excited states are found to be linear 3u and 1u states, correlating to 3B1/3A1 and 1B1/1A1 Renner-Teller pairs, respectively, in the C2v symmetry.

Gas coning control for smart wells using a dynamic coupled well-reservoir simulator

NARCIS (Netherlands)

Leemhuis, A.P.; Nennie, E.D.; Belfroid, S.P.C.; Alberts, G.J.N.; Peters, E.; Joosten, G.J.P.

2008-01-01

A strong increase in gas inflow due to gas coning and the resulting bean-back because of Gas to Oil Ratio (GOR) constraints can severely limit oil production and reservoir drive energy. In this paper we will use a coupled reservoir-well model to demonstrate that oil production can be increased by

Modeling Water Saturation Points in Natural Gas Streams Containing CO2 and H2S-Comparisons with Different Equations of State

DEFF Research Database (Denmark)

dos Santos, Leticia C.; Abunahman, Samir S.; Tavares, Frederico W.

2015-01-01

Since the discovery of the Pre-Salt layer in Brazilian waters, production of high gas-oil ratio (GOR) has increased considerably. This gas has a high content of water, CO2, and sometimes H2S. A study in different conditions was conducted using several equations of state (EoS) such as Peng...

Magnetic Catalysis of Chiral Symmetry Breaking: A Holographic Prospective

International Nuclear Information System (INIS)

Filev, V.; Rashkov, R.; Rashkov, R.

2010-01-01

We review a recent investigation of the effect of magnetic catalysis of mass generation in holographic Yang-Mills theories. We aim at a self-contained and pedagogical form of the review. We provide a brief field theory background and review the basics of holographic flavordynamics. The main part of the paper investigates the influence of external magnetic field to holographic gauge theories dual to the D3/D5- and D3/D7-brane intersections. Among the observed phenomena are the spontaneous breaking of a global internal symmetry, Zeeman splitting of the energy levels, and the existence of pseudo, Goldstone modes. An analytic derivation of the Gell-Mann-Oaks-Renner relation for the D3/D7 set up is reviewed. In the D3/D5 case, the pseudo-Goldstone modes satisfy nonrelativistic dispersion relation. The studies reviewed confirm the universal nature of the magnetic catalysis of mass generation.

Faktoren, die das Eiablageverhalten und die Ovulation Wüsten bewohnender Tenebrioniden (Coleoptera: Insecta) beeinflussen

OpenAIRE

Rössl, Rüdiger

2008-01-01

Über das Eiablage Verhalten und die Faktoren, welche die Eiablage begünstigen, ist bei den meisten der fast 20000 Tenebrioniden nichts bekannt. Lediglich bei einigen wirtschaftlich wichtigen Arten gibt es dazu Untersuchungen (JAKOBS & RENNER 1988). Als eine der wasserärmsten Wüsten der Welt ist die Namib reich an endemischen Coleopteren – insbesondere 320 Tenebrionidaearten (HOLM & DE MEILLON 1996). Langzeituntersuchungen an Tenebrioniden (HENSCHEL 1994, HENSCHEL et al. 1998) legen die Vermut...

Does low-dose CCK-8 injection produce abdominal pain in 'truly normal' individuals?

International Nuclear Information System (INIS)

Ramsay, S.; Webb, B.; Hille, N.

1999-01-01

Full text: The development of abdominal pain following cholecystokinin (CCK) injection is not specific for biliary disease. Patients can develop abdominal pain with CCK during hepatobiliary studies and have normal gallbladder function. Does this non-biliary pain indicate pathology? High doses of CCK induce pain in functional bowel syndromes, but may also produce pain in normals. Pain is less common at lower CCK doses, and hence may be more significant. This study aimed to determine the rate at which the low dose of CCK used in hepatobiliary scans causes abdominal pain and other side-effects in 'truly normal' individuals. Some preliminary results of CCK-induced pain in gastro-oesophageal reflux (GOR) patients are also discussed. Six 'truly normal' subjects were studied. 'Truly normal' was defined as: no current history of abdominal pain; no biliary or gallbladder disease; no significant GIT pathology; not currently on medication designed to be pharmacologically active in the GIT. Each patient was given an intravenous dose of 0.01 μg-kg -1 of CCK8 over 3 min, and side-effects were recorded for 30 min. No subject had abdominal pain. Two developed nausea, 1 moderate and 1 mild. An identical dose of CCK was given to 2 patients with endoscopically proven GOR. Anti-reflux medication had been ceased for 12 h. After CCK, 1 patient developed typical 'reflux' pain and 1 was asymptomatic. In conclusion, none of our 'truly normal' patients had abdominal pain with low-dose CCK. This suggests that patients developing pain following injection of this dose of CCK are indeed abnormal. The literature infers these patients may have irritable bowel syndrome; however, this hypothesis is complicated by our preliminary results indicating that CCK can reproduce pain in some patients with GOR

Acoustic levitation in the presence of gravity

Science.gov (United States)

Collas, P.; Barmatz, M.; Shipley, C.

1989-01-01

The method of Gor'kov (1961) has been applied to derive general expressions for the total potential and force on a small spherical object in a resonant chamber in the presence of both acoustic and gravitational force fields. The levitation position is also determined in rectangular resonators for the simultaneous excitation of up to three acoustic modes, and the results are applied to the triple-axis acoustic levitator. The analysis is applied to rectangular, spherical, and cylindrical single-mode levitators that are arbitrarily oriented relative to the gravitational force field. Criteria are determined for isotropic force fields in rectangular and cylindrical resonators. It is demonstrated that an object will be situated within a volume of possible levitation positions at a point determined by the relative strength of the acoustic and gravitational fields and the orientation of the chamber relative to gravity.

Lärandemålens politik

DEFF Research Database (Denmark)

Olsson, Ulf; Petersson, Kenneth; Krejsler, John B.

2015-01-01

. Eftersom kapitlet handlar om hur lärande och lärandemål fungerar som politiska instrument kan man säga att det handlar om utbildningsområdets politik snarare än om utbildningspolitik som istället fokuserar frågor om utbildnings mål, uppdrag, aktörer, utveckling, organisation, resurser, resultat, konflikter...

Developing computer-based training programs for basic mammalian histology: Didactic versus discovery-based design

Science.gov (United States)

Fabian, Henry Joel

Educators have long tried to understand what stimulates students to learn. The Swiss psychologist and zoologist, Jean Claude Piaget, suggested that students are stimulated to learn when they attempt to resolve confusion. He reasoned that students try to explain the world with the knowledge they have acquired in life. When they find their own explanations to be inadequate to explain phenomena, students find themselves in a temporary state of confusion. This prompts students to seek more plausible explanations. At this point, students are primed for learning (Piaget 1964). The Piagetian approach described above is called learning by discovery. To promote discovery learning, a teacher must first allow the student to recognize his misconception and then provide a plausible explanation to replace that misconception (Chinn and Brewer 1993). One application of this method is found in the various learning cycles, which have been demonstrated to be effective means for teaching science (Renner and Lawson 1973, Lawson 1986, Marek and Methven 1991, and Glasson & Lalik 1993). In contrast to the learning cycle, tutorial computer programs are generally not designed to correct student misconceptions, but rather follow a passive, didactic method of teaching. In the didactic or expositional method, the student is told about a phenomenon, but is neither encouraged to explore it, nor explain it in his own terms (Schneider and Renner 1980).

Photodissociation of water. II. Wave packet calculations for the photofragmentation of H2O and D2O in the B˜ band

Science.gov (United States)

van Harrevelt, Rob; van Hemert, Marc C.

2000-04-01

A complete three-dimensional quantum mechanical description of the photodissociation of water in the B˜ band, starting from its rotational ground state, is presented. In order to include B˜-X˜ vibronic coupling and the B˜-Ã Renner-Teller coupling, diabatic electronic states have been constructed from adiabatic electronic states and matrix elements of the electronic angular momentum operators, following the procedure developed by A. J. Dobbyn and P. J. Knowles [Mol. Phys. 91, 1107 (1997)], using the ab initio results discussed in the preceding paper. The dynamics is studied using wave packet methods, and the evolution of the time-dependent wave function is discussed in detail. Results for the H2O and D2O absorption spectra, OH(A)/OH(X) and OD(A)/OD(X) branching ratios, and rovibrational distributions of the OH and OD fragments are presented and compared with available experimental data. The present theoretical results agree at least qualitatively with the experiments. The calculations show that the absorption spectrum and the product state distributions are strongly influenced by long-lived resonances on the adiabatic B˜ state. It is also shown that molecular rotation plays an important role in the photofragmentation process, due to both the Renner-Teller B˜-X˜ mixing, and the strong effect of out-of-plane molecular rotations (K>0) on the dynamics at near linear HOH and HHO geometries.

Pionic atom as a probe of origin of the Hadron Mass. Quantitative evaluation of the chiral condensate in a nuclear medium

International Nuclear Information System (INIS)

Suzuki, Ken; Itahashi, Kenta; Hirenzaki, Satoru

2005-01-01

Spontaneous breaking of chiral symmetry is believed to be the mechanism which endows nucleus their large masses. The order parameter of the symmetry breaking is the chiral condensate, whose magnitude is predicted to decrease linearly as the nuclear density is increased. The reduction of quark condensate was quantitatively studied from recent precise measurement of deeply bound pionic 1s states on three tin (Sn) isotopes. We made use of the Gell-Mann-Oakes-Renner relation which connects the magnitude of quark-codensate to a pion decay constant, and then used the Tomozawa-Weinberg relation which relates the pion decay constant to an isovector strength of the pion-nucleus potential. The potential strength was determined by fitting the measured pionic 1s-state binding energies. The result shows that the quark-condensate strength is reduced by about 35% at normal nuclear density, compared with the ''vacuum'' value obtained from pionic hydrogen X-ray measurements. This is the first quantitative deduction of the quark condensate modification at finite nuclear density, and is an important step towards understanding the origin of hadron masses. (author)

Influence of bouncing and assisted autogenic drainage on acid gastro-oesophageal reflux in infants.

Science.gov (United States)

Van Ginderdeuren, Filip; Vandenplas, Yvan; Deneyer, Michel; Vanlaethem, Sylvie; Buyl, Ronald; Kerckhofs, Eric

2017-08-01

To determine the influence of modern airway clearance techniques using assisted autogenic drainage (AAD), whether or not combined with bouncing, on acid gastro-oesophageal reflux (GOR) in infants reflux episodes (RE) and the refluxindex (RI) were the outcome measures. The results obtained during (T15) and 15 min after the intervention (T30) were compared to a period of 15 min before treatment (T0). The results of 150 infants, evenly distributed over the three treatment groups, were analyzed. No significant differences were found in number of RE at T15 and T30 compared to T0 in the bouncing group (P = 0.42), the AAD group (P = 0.14), and the BAAD group (P = 0.91). RI was significantly lower in the AAD group at T15 compared to T0 (P < 0.01). No differences in RI were found in the bouncing group (P = 0.28), nor in the BAAD group (P = 0.81). Bouncing, AAD and BAAD do not induce, nor aggravate acid GOR in infants under the age of 1 year. © 2017 Wiley Periodicals, Inc.

A ternary nanocatalyst of Ni/Cr/Co oxides with high activity and stability for alkaline glucose electrooxidation

International Nuclear Information System (INIS)

Gu, Yingying; Yang, Haihong; Li, Benqiang; An, Yarui

2016-01-01

Highlights: • Ni-Cr-Co nanomaterial was synthesized by thermal decomposition method. • Ni 4 -Cr 1 -Co 1.5 has the highest GOR activity among the prepared catalysts. • A catalytic current density of 23.8 mA × cm −2 is attained for alkaline GOR. - Abstract: A novel ternary nanocatalyst of Ni-Cr-Co oxides is synthesized as anode electro-catalysts for glucose oxidation. The nanostructure is characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM), which indicates that the catalyst particles are well dispersed with average size of 30 nm when the calcination temperature is 500 °C. The electrochemical performance is evaluated via cyclic voltammetry (CV). Compared with the bimetallic Ni-Cr and Ni-Co nanocatalysts, Ni-Cr-Co electrocatalysts exhibites more negative onset potential (0.4 V) and high oxidation peak current density (23.8 mA cm −2 ) in alkaline media towards glucose oxidation. Meanwhile, the results also show that the Ni-Cr-Co nanomaterial possesses good performance of anti-poisoning capability, reproducibility and long-time stability, which make it an excellent candidate for fuel cell electrocatalyst.

Pseudoscalar meson decay constants and couplings, the Witten-Veneziano formula beyond large Nc, and the topological susceptibility

International Nuclear Information System (INIS)

Shore, G.M. . E-mail g.m.shore@swansea.ac.uk

2006-01-01

The QCD formulae for the radiative decays η,η ' ->γγ, and the corresponding Dashen-Gell-Mann-Oakes-Renner relations, differ from conventional PCAC results due to the gluonic U(1) A axial anomaly. This introduces a critical dependence on the gluon topological susceptibility. In this paper, we revisit our earlier theoretical analysis of radiative pseudoscalar decays and the DGMOR relations and extract explicit experimental values for the decay constants. This is our main result. The flavour singlet DGMOR relation is the generalisation of the Witten-Veneziano formula beyond large N c , so we are able to give a quantitative assessment of the realisation of the 1/N c expansion in the U(1) A sector of QCD. Applications to other aspects of η ' physics, including the relation with the first moment sum rule for the polarised photon structure function g 1 γ , are highlighted. The U(1) A Goldberger-Treiman relation is extended to accommodate SU(3) flavour breaking and the implications of a more precise measurement of the η and η ' -nucleon couplings are discussed. A comparison with the existing literature on pseudoscalar meson decay constants using large-N c chiral Lagrangians is also made

Global Security | La sécurité globale

Directory of Open Access Journals (Sweden)

2012-05-01

Full Text Available Peacekeeping Operations Expenditure, Humanitarian Assistance and ODA, 1990–2010 (in billion USD constant, 2009Dépenses pour les opérations de maintien de la paix, aide humanitaire et APD, 1990-2010 (en milliards USD constants de 2009Sources: OECD, OECD.Stat Extracts, http://stats.oecd.org/Index.aspx; UN, United Nations Peacekeeping, http://www.un.org/en/peacekeeping; Renner, M., Peacekeeping Expenditures in Current vs. Real Terms 1947–2005, http://www.globalpolicy.org; UN documents A/63/5 (...

Componentes corporais e órgãos internos de cordeiros Texel x Bergamácia, Texel x Santa Inês e Santa Inês puros, terminados em confinamento, com casca de café como parte da dieta Body components and internal organs of Texel x Bergamácia, Texel x Santa Inês and purebred Santa Inês lambs finished in fedlot, with of coffee hull as part of the diet

Directory of Open Access Journals (Sweden)

Iraides Ferreira Furusho-Garcia

2003-12-01

Full Text Available Foram utilizados 12 cordeiros cruzas Texel x Bergamácia (TB, 12 cordeiros cruzas Texel x Santa Inês (TS e 12 cordeiros puros Santa Inês (SI, confinados individualmente por 50 dias (dos 130 aos 180 dias de idade. Cada grupo genético constou de seis machos inteiros e seis fêmeas, recebendo três dietas diferentes: 1 = sem casca de café (controle; 2 = com casca de café in natura; 3 = com casca de café tratada com uréia. O rúmen/retículo (RR dos animais que receberam as dietas 2 e 3 foram mais pesados em relação ao RR dos animais submetidos a dieta 1. O abomaso (ABO, fígado (FIG e pâncreas (PAN dos cordeiros alimentados com a dieta 3 foram mais leves comparados aos que receberam as dietas 1 e 2. Os cordeiros cruzas TB e TS apresentaram maior peso para a cabeça (CAB, pés/canelas (PEC, omaso (OMA, ABO, intestinos delgado (IND e grosso (ING. Os machos apresentaram sangue (SAN e RR mais pesados que as fêmeas. Os pesos de pele (PEL, gordura (GOR, esôfago/traquéia (ET, coração (COR e pulmão (PUL também foram analisados e não foram afetados pelas dietas, pelos grupos genéticos e pelo sexo. As fêmeas apresentaram tendência de maior proporção de GOR.Twelve crossbred Texel x Bergamácia (TB, 12 crossbred Texel x Santa Inês (TS and 12 purebred Santa Inês (SI lambs were individually finished in fedlot for 50 days (from 130 to 180 days of age. Each genetic group consisted of six males and six females, fed three different diets: 1 = without coffee hulls (control; 2 = with coffee hulls in nature; 3 = with coffee hulls treated of with urea. The rumen/reticulum (RR of the animals fed diets 1 and 3 were significantly heavier than those fed diet 1. The abomasum (ABO, liver (FIG and pancreas (PAN of the lambs fed diet 3 were lighter than the animals fed diet 2. The TB and TS of crossbred lambs showed greater weights of head (CAB, foot/shin (PEC, omasum (OMA, abomasum (ABO, small intestine (IND and large intestine (ING. The males showed

Om behovet att skilja mellan empiriska och begreppligt konstitutiva frågor

Directory of Open Access Journals (Sweden)

Birgit Schaffar

2012-07-01

Full Text Available This article clarifies the fundamental difference between empirical and conceptual questions in education. In the ongoing debate about the role of philosophy of education, many authors either unreflectively assume or actively demand that philosophy of education should try to adapt to (empircal science. Through a discussion of the possibilities of a child to open up to educational processes (Herbart: Bildbarkeit the article illustrates how philosophical reflection on education fundamentally differs in character from empirical approaches. It suggests that one important task for philosophy of education is to clarify what questions can be answered empirically from those that are constitutive of our understanding of education. Wittgenstein’s later philosophy is used as a central starting point in this article.

Simulation of Flow Behavior of Gas Condensate at Low Interfacial Tension

DEFF Research Database (Denmark)

Wang, Peng; Stenby, Erling Halfdan; Pope, Gary A.

1996-01-01

A vertical, long-core experiment of natural depletion of a gas condensate that was conducted by Elf Aquitaine is simulated by an equation-of-state (EOS) compositional simulator, UTCOMP. The Peng-Robinson (PR) EOS is used for phase-behavior calculation. Because of low interfactial tension (IFT......) in the measurement, more attention is paid to the influence of IFT on gas/oil flow behavior. Two different types of model are used to compute the relative permeability. Model I is a Corey-type model combined with the capillary number concept. Model II is a modified form of the model proposed by Coats.The simulation...... results indicate that the effect of low IFT on relative permeability can be reasonably described by the two models selected, although the producing gas-oil ratio (GOR) obtained using Model I deviates somewhat from the experimental values in later depletion stages. The condensed liquid can be a mobile...

En obekväm sanning eller en stor bluff? : En analys av den visuella gestaltningen av fenomenet "global uppvärmning" i filmmediet

OpenAIRE

Eriksson, Anton; Oretoft, Mikael

2010-01-01

En uppsats som kritiskt granskar och analyserar den visuella gestaltningen i två dokumentärfilmer. Huvudtemat i filmerna är global uppvärmning och konsekvenserna av detta. Uppsatsens syfte är att undersöka den visuella gestaltningen av den miljödebatt som filmerna är en del i och genom detta belysa frågor som berör visuell kultur och popularisering av vetenskap.

High Angle of Attack Aerodynamics

Science.gov (United States)

1979-01-01

strakes were added promises well for the flight tests. At the time of writing the test aircraft had just made its first flight. A photograph taken from...I- : : I 7(71000 MUS I I- UN ILIA I I GAS 1.~W 74LL GOR I L7AP7 07000 Fig.VAIO 11M" ORBITERt CEAP$I’ WN TUNNE MEGR~ Fig." 1LS SV2MDA. IELT

Secret key rates in quantum key distribution using Renyi entropies

Energy Technology Data Exchange (ETDEWEB)

Abruzzo, Silvestre; Kampermann, Hermann; Mertz, Markus; Bratzik, Sylvia; Bruss, Dagmar [Institut fuer Theoretische Physik III, Heinrich-Heine-Universitaet Duesseldorf (Germany)

2010-07-01

The secret key rate r of a quantum key distribution protocol depends on the involved number of signals and the accepted ''failure probability''. We reconsider a method to calculate r focusing on the analysis of the privacy amplification given by R. Renner and R. Koenig (2005). This approach involves an optimization problem with an objective function depending on the Renyi entropy of the density operator describing the classical outcomes and the eavesdropper system. This problem is analyzed for a generic class of QKD protocols and the current research status is presented.

Building indifferentiable compression functions from the PGV compression functions

DEFF Research Database (Denmark)

Gauravaram, P.; Bagheri, Nasour; Knudsen, Lars Ramkilde

2016-01-01

Preneel, Govaerts and Vandewalle (PGV) analysed the security of single-block-length block cipher based compression functions assuming that the underlying block cipher has no weaknesses. They showed that 12 out of 64 possible compression functions are collision and (second) preimage resistant. Black......, Rogaway and Shrimpton formally proved this result in the ideal cipher model. However, in the indifferentiability security framework introduced by Maurer, Renner and Holenstein, all these 12 schemes are easily differentiable from a fixed input-length random oracle (FIL-RO) even when their underlying block...

Viabilidade econômica e financeira de uma empresa comercial

OpenAIRE

Hilário José Borba

2004-01-01

O objetivo deste trabalho centrou-se em promover um estudo do equilíbrio financeiro das empresas, baseado em um estudo de caso de uma empresa comercial do ramo de varejo, as Lojas Renner S/A, identificando sua relação com sua saúde econômica. Complementarmente, avalia as alternativas de financiamento para capital de giro, disponíveis no Brasil, como instrumentos capazes de contribuir para o desenvolvimento e estabilidade das empresas. Contém um breve resumo das principais demonstrações contáb...

Low energy constituent quark and pion effective couplings in a weak external magnetic field

Science.gov (United States)

Braghin, Fábio L.

2018-03-01

An effective model with pions and constituent quarks in the presence of a weak external background electromagnetic field is derived by starting from a dressed one gluon exchange quark-quark interaction. By applying the auxiliary field and background field methods, the structureless pion limit is considered to extract effective pion and constituent quark couplings in the presence of a weak magnetic field. The leading terms of a large quark and gluon masses expansion are obtained by resolving effective coupling constants which turn out to depend on a weak magnetic field. Two pion field definitions are considered for that. Several relations between the effective coupling constants and parameters can be derived exactly or in the limit of very large quark mass at zero and weak constant magnetic field. Among these ratios, the Gell-Mann-Oakes-Renner and the quark level Goldberger-Treiman relations are obtained. In addition to that, in the pion sector, the leading terms of Chiral Perturbation Theory coupled to the electromagnetic field are recovered. Some numerical estimates are provided for the effective coupling constants and parameters.

The effects of exogenous lipid on THP-1 cells: an in vitro model of airway aspiration?

Directory of Open Access Journals (Sweden)

Yvette A. Hayman

2017-03-01

Full Text Available Chronic inflammatory diseases of the airways are associated with gastro-oesophageal reflux (GOR and aspiration events. The observation of lipid-laden macrophages (LLMs within the airway may indicate aspiration secondary to GOR. The proposed mechanism, that lipid droplets from undigested or partially digested food are aspirated leading to accumulation in scavenging macrophages, led us to hypothesise that an activated population of LLMs could interact with other immune cells to induce bronchial inflammation. To test this, we generated an in vitro model using differentiated THP-1 cells, which were treated with a high-fat liquid feed. Here, we show that THP-1 cells can take up lipid from the high-fat feed independent of actin polymerisation or CD36-dependent phagocytosis. These cells did not exhibit M1 or M2 polarisation. Gene array analysis confirmed over 8000 genes were upregulated by at least twofold following high fat exposure, and IL-8 was the most upregulated gene. Pathway analysis revealed upregulation of genes known to be involved in chronic obstructive pulmonary disease (COPD pathophysiology. We suggest that aspiration and macrophage phagocytosis may be important mechanisms in the aetiology of diseases such as COPD and cystic fibrosis that are characterised by high levels of IL-8 within the airways.

The effects of exogenous lipid on THP-1 cells: an in vitro model of airway aspiration?

Science.gov (United States)

Hayman, Yvette A; Sadofsky, Laura R; Williamson, James D; Hart, Simon P; Morice, Alyn H

2017-01-01

Chronic inflammatory diseases of the airways are associated with gastro-oesophageal reflux (GOR) and aspiration events. The observation of lipid-laden macrophages (LLMs) within the airway may indicate aspiration secondary to GOR. The proposed mechanism, that lipid droplets from undigested or partially digested food are aspirated leading to accumulation in scavenging macrophages, led us to hypothesise that an activated population of LLMs could interact with other immune cells to induce bronchial inflammation. To test this, we generated an in vitro model using differentiated THP-1 cells, which were treated with a high-fat liquid feed. Here, we show that THP-1 cells can take up lipid from the high-fat feed independent of actin polymerisation or CD36-dependent phagocytosis. These cells did not exhibit M1 or M2 polarisation. Gene array analysis confirmed over 8000 genes were upregulated by at least twofold following high fat exposure, and IL-8 was the most upregulated gene. Pathway analysis revealed upregulation of genes known to be involved in chronic obstructive pulmonary disease (COPD) pathophysiology. We suggest that aspiration and macrophage phagocytosis may be important mechanisms in the aetiology of diseases such as COPD and cystic fibrosis that are characterised by high levels of IL-8 within the airways.

Reseñas

Directory of Open Access Journals (Sweden)

Mónica Gabriela Pené

2011-10-01

Full Text Available Manual para la preservación de papel: nueva era de la conservación preventiva y su aplicación actualizada de Silvio Gorén por Mónica Gabriela PenéGestión y planificación de bibliotecas de G. Solimine, G. Di Domenico y M. Pérez Pulido por Lorena MirandaThe library: a illustrated history de S. A.P. Murray por María Eugenia Costa

Rwanda; Poverty Reduction Strategy Paper: Progress Report

OpenAIRE

International Monetary Fund

2011-01-01

Rwanda’s Economic Development and Poverty Reduction Strategy (EDPRS) covers the period 2008–12 and provides a medium-term framework for achieving the country’s long-term development aspirations as embodied in Rwanda Vision 2020, the seven-year Government of Rwanda (GoR) program, and the Millennium Development Goals. The economic cluster covers the macroeconomic and financial sector (energy, transport, information and communication technology (ICT) and Science, Technology and Innovation (STI),...

EVALUASI ATAS IMPLEMENTASI APLIKASI SISTEM AKUNTANSI INSTANSI BASIS AKRUAL (SAIBA) PADA MITRA KERJA KPPN GORONTALO DAN MARISA

OpenAIRE

Azwar Iskandar; Tenry Nur Amriani; Achmat Subekan

2017-01-01

ABSTRACT The purpose of this research is to evaluate the success of accrual basic application system (SAIBA) implementation based on user perception with DeLone & McLean (DM) Information System (IS) Success Model Approach. The data used are primary and secondary data. Primary data gathered through questionnaires distributed to respondents while secondary data gathered from other institutions such as Directorate General of Budget, Directorate General of Treasury, and Treasury Office of Gor...

Optomechanical transduction applied to M/NEMS devices

OpenAIRE

Leoncino , Luca

2017-01-01

During several last years, technological advances in the field of silicon micromachininghave initiated the industrial growth of Micro/Nano Electro Mechanical Systems(M/NEMS) for fabricating sensors or actuators.In the field of NEMS with sub-micron sizes, the properties allow for targeting applicationsin biomedical or biochemical analyses. It has been demonstrated that thesenano mass (or force) sensors achieve resolutions of the order of zeptogram (10−21 g)or picoNewton, hence allowing early d...

Renner-Teller modelling of recent experimental spectra of H{sub 2}S{sup +}

Energy Technology Data Exchange (ETDEWEB)

Duxbury, Geoffrey [Department of Physics, SUPA, University of Strathclyde, John Anderson Building, 107 Rottenrow, Glagow G4 0NG, Scotland (United Kingdom)

2015-01-22

Recently there has been a renewal of interest in the spectroscopy and dynamics of the formation and fragmentation of the hydrogen sulphide ion, including. rotationally resolved spectra of higher vibrational states of the ∼A{sup 2}A{sub 1}−∼X{sup 2}B{sub 1} system than were obtained previously, and a comprehensive imaging study of the photo-fragmentation routes of highly excited H{sub 2}S{sup +}. In collaboration with Ch. Jungen and A. Alijah I have extended our previous l basis approach to the calculation of the effects of orbital angular momentum in H{sub 2}S{sup +} to include the stretch - bender extensions, with the options of using either the K- or l basis. This new code is being used to calculate the complicated orbital angular momentum and spin-orbit coupling effects responsible for the ro-vibronic pattern measured in some of the new experimental results.

A Mobilização de Capacidades Dinâmicas na Lojas Renner

OpenAIRE

Adalberto Escalona Gonçalves Garcia; Luiz Paulo Bignetti

2014-01-01

O artigo tem como objetivo analisar a trajetória de uma das empresas varejistas de maior destaque no mercado brasileiro, através de um estudo longitudinal que enfatiza a mobilização de seus recursos e capacidades ao longo de 90 anos de história. Explorando o conceito de capacidades dinâmicas, descrevem-se as ações estratégicas empreendidas em momentos de crescimento e de crise. Para tanto, foram realizadas entrevistas em profundidade com dez tomadores de decisão que vivenciaram diferentes mom...

Fabrication of Mediatorless/Membraneless Glucose/Oxygen Based Biofuel Cell using Biocatalysts Including Glucose Oxidase and Laccase Enzymes

Science.gov (United States)

Christwardana, Marcelinus; Kim, Ki Jae; Kwon, Yongchai

2016-07-01

Mediatorless and membraneless enzymatic biofuel cells (EBCs) employing new catalytic structure are fabricated. Regarding anodic catalyst, structure consisting of glucose oxidase (GOx), poly(ethylenimine) (PEI) and carbon nanotube (CNT) is considered, while three cathodic catalysts consist of glutaraldehyde (GA), laccase (Lac), PEI and CNT that are stacked together in different ways. Catalytic activities of the catalysts for glucose oxidation and oxygen reduction reactions (GOR and ORR) are evaluated. As a result, it is confirmed that the catalysts work well for promotion of GOR and ORR. In EBC tests, performances of EBCs including 150 μm-thick membrane are measured as references, while those of membraneless EBCs are measured depending on parameters like glucose flow rate, glucose concentration, distance between two electrodes and electrolyte pH. With the measurements, how the parameters affect EBC performance and their optimal conditions are determined. Based on that, best maximum power density (MPD) of membraneless EBC is 102 ± 5.1 μW · cm-2 with values of 0.5 cc · min-1 (glucose flow rate), 40 mM (glucose concentration), 1 mm (distance between electrodes) and pH 3. When membrane and membraneless EBCs are compared, MPD of the membraneless EBC that is run at the similar operating condition to EBC including membrane is speculated as about 134 μW · cm-2.

A fascinating field and a pragmatic enterprise

DEFF Research Database (Denmark)

Hjørland, Birger

2013-01-01

A reviewer wrote about the book: "I synnerhet Hjørlands kapitel väcker frågor om fältets inriktning och framtid som det hade varit intressant om redaktörerna hade fångat upp och diskuterat i ett avslutande och syntetiserande kapitel. Detta hade kunnat lyfta denna konferensantologi till något mer ...... en spännande samling texter." Hanna Carlsson i Nordisk Tidsskrift for Informationsvidenskab og Kulturformidling: http://www.ntik.dk/2014/Nr1/Carlsson.pdf...

On the local theory of resonant inelastic collisions of slow electrons with carbon dioxide

International Nuclear Information System (INIS)

Kazansky, A.K.; Sergeeva, L.Yu.

1994-01-01

A method of calculating the cross sections of inelastic vibronic transitions in collisions of slow electrons with polyatomic molecules in the framework of the local theory (the 'boomerang' model) is proposed. The method is based on the study of the time evolution of the initial vibronic wavefunction; the evolution is governed by the (complex valued) Hamiltonian of the intermediate anion state. The method has been applied to the consideration of inelastic electron collisions with the CO 2 molecule in the two-mode approximation (symmetrical stretching and bending). The results obtained demonstrate the importance of the two-mode description for the system which can undergo the Renner transition. (Author)

Locking depth and slip-rate of the Húsavík Flatey fault, North Iceland, derived from continuous GPS data 2006-2010

KAUST Repository

Metzger, Sabrina; Jonsson, Sigurjon; Geirsson, Halldó r

2011-01-01

We find a shallow locking depth of 6.3+1.7- 1.2 km and transform motion that is accommodated 34 ± 3 per cent by the HFF and 66 ± 3 per cent by the GOR, resulting in a slip velocity of 6.6 ± 0.6 mm yr-1 for the HFF. Assuming steady accumulation since the last two large M6.5 earthquakes in 1872 the seismic potential of the fault is equivalent to a Mw6.8 ± 0.1 event.

Location and Routing of the Defense Courier Service Aerial Network

Science.gov (United States)

1991-03-01

nature of the network is best described by a hierarchical depot model. Such a model is formulated by Perl and Daskin , and described by Chan and Rowell...AFIT/GOR/ENS/91M-1 Approved for public release; distribution is unlimited 91-05782 Form Aporo ,cd REPORT DOCUMENTATION PAGE 1 FoMNo 004-0o78 a -’saI c 1...addressed by clustering co-located demands with Kulkarni’s (1985) subtour breaking constraint. Vehicle range is considered by redressing a shortfall of the

Gastrointestinal scintigraphy in children

International Nuclear Information System (INIS)

Mann, M.D.

2004-01-01

Full text: Milk scans are by far the commonest GI study we perform. All babies regurgitate to a greater or lesser extent and there is no clear distinction between normal and abnormal. In addition gastro-oesophageal reflux (GOR) is not the only cause of regurgitation; regurgitation may be due to abnormal oesophageal transit, GOR or slow gastric emptying. The milk scan can detect and quantify these abnormalities. It may also detect pulmonary aspiration if this occurs during the study period. Short bowel syndrome, soiling and a constipation are the commonest indications for small and large bowel transit studies. Children with feeding difficulties and short bowel syndrome often have a segment at which hold up occurs while most children with soiling have normal or even rapid transit through small and large bowel. Ingestion of caustic substances by young children is a frequent cause of presentation at paediatric emergency centers and about 20% of these patients have significant oesophageal injury requiring ongoing therapy to prevent stricture formation. A 99m Tc sucralfate swallow is an accurate method for assessing the oesophageal injury and may be used to document healing. The methods for labeling sucralfate and performing the scan are simple. Meckel's scans are useful but require careful preparation of the patient and attention to detail. GI bleeding studies with colloid or labeled red blood cells are often requested but I find accurate localization of the bleeding site extremely difficult. (author)

Induced viscosity fibre system for the treatment or prevention of gastro-oesophageal reflux (gor)

NARCIS (Netherlands)

Belle, F.N.; Harthoorn, L.F.; Venema, P.; Choi, W.M.C.

2014-01-01

The invention pertains to the use of pectin and alginate in the manufacture of a liquid nutritional composition in the treatment or prevention of gastro-oesophageal reflux in a patient, said composition comprising pectin and alginate, said composition exhibiting a maximum gel strength at a pH in the

Expression of recombinant multi-coloured fluorescent antibodies in gor -/trxB- E. coli cytoplasm

Directory of Open Access Journals (Sweden)

Markiv Anatoliy

2011-11-01

Full Text Available Abstract Background Antibody-fluorophore conjugates are invaluable reagents used in contemporary molecular cell biology for imaging, cell sorting and tracking intracellular events. However they suffer in some cases from batch to batch variation, partial loss of binding and susceptibility to photo-bleaching. In theory, these issues can all be addressed by using recombinant antibody fused directly to genetically encoded fluorescent reporters. However, single-chain fragment variable domains linked by long flexible linkers are themselves prone to disassociation and aggregation, and in some cases with isoelectric points incompatible with use in physiologically relevant milieu. Here we describe a general approach that permits fully functional intracellular production of a range of coloured fluorescent recombinant antibodies with optimally orientated VH/VL interfaces and isoelectric points compatible for use in physiological solutions at pH 7.4 with a binding site to fluorophore stoichiometry of 1:1. Results Here we report the design, assembly, intracellular bacterial production and purification of a panel of novel antibody fluorescent protein fusion constructs. The insertion of monomeric fluorescent protein derived from either Discosoma or Aequorea in-between the variable regions of anti-p185HER2-ECD antibody 4D5-8 resulted in optimal VH/VL interface interactions to create soluble coloured antibodies each with a single binding site, with isoelectric points of 6.5- 6. The fluorescent antibodies used in cell staining studies with SK-BR-3 cells retained the fluorophore properties and antibody specificity functions, whereas the conventional 4D5-8 single chain antibody with a (Gly4Ser3 linker precipitated at physiological pH 7.4. Conclusions This modular monomeric recombinant fluorescent antibody platform may be used to create a range of recombinant coloured antibody molecules for quantitative in situ, in vivo and ex vivo imaging, cell sorting and cell trafficking studies. Assembling the single chain antibody with monomeric fluorescent protein linker facilitates optimal variable domain pairing and alters the isoelectric point of the recombinant 4D5-8 protein conferring solubility at physiological pH 7.4. The efficient intracellular expression of these functional molecules opens up the possibility of developing an alternative approach for tagging intracellular targets with fluorescent proteins for a range of molecular cell biology imaging studies.

Longevidade em organizações empresariais brasileiras : o caso da Lojas Renner S.A.

OpenAIRE

Garcia, Adalberto Escalona Gonçalves

2011-01-01

O tema principal da presente tese é a longevidade organizacional. Pesquisas realizadas com empresas dos Estados Unidos e da Europa indicam que o tempo médio de vida das organizações está diminuindo, a tal ponto de as empresas apresentarem um ciclo de duração menor do que a vida média das pessoas. Especificamente no âmbito brasileiro, as turbulências econômicas, vividas nas décadas de 1980 e 1990, contribuíram para o encerramento de atividades de muitas empresas. Estudos realizados no Brasil i...

Utjecaj izbora vinskog posuđa na polifenolni sastav vina

OpenAIRE

Čirjak, Marina

2017-01-01

Kvaliteta vina u značajnoj mjeri je definira polifenolnim sastavom. Polifenoli definiraju boju, trpkoću, gorčinu i strukturu vina, a dokazano je da imaju i pozitivne učinke na zdravlje. Na sastav i udio polifenola vina utječe: sorta grožđa, primijenjena tehnologija prerade, maceracija te uvjeti tijekom dozrijevanja grožđa i vina. Pri izradi ovog rada koristila su se crvena vina, sorti Cabernet sauvignon, Pinot crni te Merlot, različitih godina berbe, trajanja maceracije, vremena i posuđa u ko...

Poolhus

OpenAIRE

Svensson, Yvonne

2012-01-01

I denna rapport redovisas ett examensarbete av Yvonne Svensson i samarbete med Claes Edman, entreprenör. Projektets mål har varit att designa ett poolhus med inredningsförslag till uppdragsgivarens koncept Poolhus/poolskydd som ska vara så pass flexibel att den passar en bred kundgrupp. Konceptet är sekretessbelagt och kommer därför inte gå närmare in på konstruktionsfrågor gällande poolskyddsdelen. Poolhuset kommer att fungera som en gäststuga och har bastu, utomhusdusch, utomhuskök samt en ...

"Music from the backyard":Hagström's music education

OpenAIRE

Thorgersen, Ketil

2009-01-01

"Från musikundervisningens bakgårdar": Hagströms musikpedagogik är en monografi som behandlar den musikundervisning som bedrevs i företaget Hagströms regi från 1946 till 1982. Syftet med avhandlingen var att undersöka och återskapa Hagströms musikpedagogiska historia med utgångspunkt i ett pragmatisk utbildningspedagogiskt perspektiv. Studien sökte svar på följande frågor: I vilka sociala och utbildningsmässiga kontexter försiggick Hagströms musikutbildning? Hur utvecklades Hagströms musikund...

Locating Direction Finders in a Generalized Search and Rescue Network

Science.gov (United States)

1991-03-01

David A . Drake and Alfred B. Marsb. Conv-ersation at NationalI Security Agenc, 29 September 1990. 7. Daskin , Mark S. " A M-admum Fpeced Co-:efing...91 7 19 134 .flT/GORjEnSj9I-M LOCATING DIRECTION FIND’RS IN A GENERALIZED SEARCH AND RESCUE NETWORK THESIS Jean M. Steppe Captain, USAF AFIT/GOR/EN S...91-Mk-7 APPROVED FOR PUBLIC RELI ASE: DISTRIBUTION UNLIMITED. 1191-05734 .. 91.. .7 19 134 i i . nMIGOR4M.S/91-MI LOCATING DIRECTION FINDERS IW A

Basing the US Air Force Special Operations Forces.

Science.gov (United States)

1986-12-01

Headquarters Military Airlift Command (Hq MAC/XONP), Scott AFB, IL, July 8, 1986. 2. Daskin , Mark S. " A Maximum Expected Covering Location Model: Formulation...7942 m~ I SAIR F ORME S ECI L PE DO S CHOOL’ 1 OF EMNIEERINO A E KCRAUS DEC 66 RFIT/OOLOS/MN-6 IUCLRS SIFIE F.’G1F/OI L Ehhmhmmhhhhhhl smomhmhmhhum...Ap a . %Ř ~ ,~, ~~%9~ q%%~ * % . i %%~ . ~* - out; ’-ILE Copy / AFIT/GOR/OS/86D-6 II BASING THE US AIR FORCE SPECIAL OPERATIONS FORCES THESIS Mark E

Quantum theory of many-body systems techniques and applications

CERN Document Server

Zagoskin, Alexandre

2014-01-01

This text presents a self-contained treatment of the physics of many-body systems from the point of view of condensed matter. The approach, quite traditionally, uses the mathematical formalism of quasiparticles and Green’s functions. In particular, it covers all the important diagram techniques for normal and superconducting systems, including the zero-temperature perturbation theory and the Matsubara, Keldysh and Nambu-Gor'kov formalism, as well as an introduction to Feynman path integrals. This new edition contains an introduction to the methods of theory of one-dimensional systems (bosonization and conformal field theory) and their applications to many-body problems.   Intended for graduate students in physics and related fields, the aim is not to be exhaustive, but to present enough detail to enable the student to follow the current research literature, or to apply the techniques to new problems. Many of the examples are drawn from mesoscopic physics, which deals with systems small enough that quantum...

The seduction of the Other: dynamics of desire in Nostalghia by Andrej Tarkovskij

Directory of Open Access Journals (Sweden)

Paolo Lago

2013-06-01

Full Text Available This study is aimed at investigating the dynamics of desire, also linked to the theme of the gaze, as it can be found in the film Nostalghia (1983 by Andrej Tarkovskij. First of all, the study will analyze the desire of Gorčakov, the main character, to see his remote Russia and its slow focus, thanks to the encounter with the 'crazy' marginalized Domenico, on the will to bring a candlelight from one side to the other of an ancient thermal pool. Through an approach mainly related to thematic criticism (halfway between cinema and literature we will try to demonstrate the interrelationships, from the point of view of seduction and analysis of fetish objects, between the desire of the protagonist and that of Domenico. Using also some means of social critique offered by Michel Foucault, we shall obtain results never previously analyzed by critical studies on Tarkovskij and Nostalghia.

Heavy and viscous oil evaluation in a deep water environment: an integrated evaluation process; Avaliacao de oleo pesado e viscoso em aguas profundas: um processo integrado de avaliacao

Energy Technology Data Exchange (ETDEWEB)

Barreto, Wesley S.; Armacanqui, Gina [Schlumberger, Rio de Janeiro, RJ (United States)

2004-07-01

There are many challenges related to heavy and viscous oil reserves evaluation. When this includes a deep-water offshore environment the challenges, including safety issues, increase in complexity. In this paper we share some experiences obtained during the preparation and execution of heavy oil evaluation activities. The process uses the petrophysical and fluid characterization preliminary results obtained during the logging phase as well as prior information from correlation field/wells in order to design the appropriate ESP configuration and location in the DST string as well as the sampler location which should allow monophasic sampling. During the operation a real time interpretation is performed validating the data obtained and sensitizing parameters such as pump frequency, bubble point pressure, GOR and viscosities, allowing the diagnostic of the operation and consequent appropriated flow conditions in order to provide a optimum picture supporting decisions regarding sampling time and other specific evaluation objectives. The examples presented illustrate the methodology proposed of integrated evaluation applied to heavy oil and its benefits. (author)

Disruption of reducing pathways is not essential for efficient disulfide bond formation in the cytoplasm of E. coli

Directory of Open Access Journals (Sweden)

Hatahet Feras

2010-09-01

Full Text Available Abstract Background The formation of native disulfide bonds is a complex and essential post-translational modification for many proteins. The large scale production of these proteins can be difficult and depends on targeting the protein to a compartment in which disulfide bond formation naturally occurs, usually the endoplasmic reticulum of eukaryotes or the periplasm of prokaryotes. It is currently thought to be impossible to produce large amounts of disulfide bond containing protein in the cytoplasm of wild-type bacteria such as E. coli due to the presence of multiple pathways for their reduction. Results Here we show that the introduction of Erv1p, a sulfhydryl oxidase and FAD-dependent catalyst of disulfide bond formation found in the inter membrane space of mitochondria, allows the efficient formation of native disulfide bonds in heterologously expressed proteins in the cytoplasm of E. coli even without the disruption of genes involved in disulfide bond reduction, for example trxB and/or gor. Indeed yields of active disulfide bonded proteins were higher in BL21 (DE3 pLysSRARE, an E. coli strain with the reducing pathways intact, than in the commercial Δgor ΔtrxB strain rosetta-gami upon co-expression of Erv1p. Conclusions Our results refute the current paradigm in the field that disruption of at least one of the reducing pathways is essential for the efficient production of disulfide bond containing proteins in the cytoplasm of E. coli and open up new possibilities for the use of E. coli as a microbial cell factory.

Thermodynamic investigation of waste heat driven desalination unit based on humidification dehumidification (HDH) processes

International Nuclear Information System (INIS)

He, W.F.; Xu, L.N.; Han, D.; Gao, L.; Yue, C.; Pu, W.H.

2016-01-01

Highlights: • HDH desalination system powered by waste heat is proposed. • Performance of the desalination unit and the relevant heat recovery effect is calculated. • Sensitive analysis of the performance for the HDH desalination system is investigated. • Mathematical model based on the first and second laws of thermodynamics is established. - Abstract: Humidification dehumidification (HDH) technology is an effective pattern to separate freshwater from seawater or brackish water. In this paper, a closed-air open-water (CAOW) desalination unit coupled with plate heat exchangers (PHEs) is applied to recover the waste heat from the gas exhaust. Sensitivity analysis for the HDH desalination unit as well as the PHEs from the key parameters including the top and initial temperature of the seawater, operation pressure, and the terminal temperature difference (TTD) of the PHEs are accomplished, and the corresponding performance of the whole HDH desalination system is calculated and presented. The simulation results show that the balance condition of the dehumidifier is allowed by the basic thermodynamic laws, followed by a peak value of gained-output-ratio (GOR) and a bottom value of total specific entropy generation. It is concluded that excellent results including the system performance, heat recovery effect and investment of the PHEs can be simultaneously obtained with a low top temperature, while the obtained desalination performance and the heat recovery effect from other measures are always conflicting. Different from other parameters of the desalination unit, the terminal temperature difference of the PHEs has little influences on the final value of GOR.

Field experiments with subsurface releases of oil and and dyed water

International Nuclear Information System (INIS)

Rye, H.; Brandvik, P.J.; Strom, T.

1998-01-01

A field experiment with a subsurface release of oil and air was carried out in June 1996 close to the Frigg Field in the North Sea area. One of the purposes of this sea trial was to increase the knowledge concerning the behaviour of the oil and gas during a subsurface blowout. This was done by releasing oil and air at 106 meters depth with a realistic gas oil ratio (GOR=67) and release velocity of the oil. In addition to the oil release, several releases with dyed water and gas (GOR=7 - 65) were performed. Important and unique data were collected during these subsurface releases. In particular, the experiments with the dyed water releases combined with air turned out to be an efficient way of obtaining field data for the behaviour of subsurface plumes. The main conclusions from analysis for the data collected are: the field methodology used to study blowout releases in the field appears to be appropriate. The use of dyed water to determine the performance of the subsurface plume proved out to be an efficient way to obtain reliable and useful data. The behaviour of the subsurface plume is very sensitive to gas flow rates. For low gas flow rates, the plume did not reach the sea surface at all due to the presence of stratification in the ambient water. Some discrepancies were found between a numerical model for subsurface releases and field results. These discrepancies are pointed out, and recommendations for possible model improvements are given. (author)

Digital Materia

OpenAIRE

Lindgren, Marcus; Richey, Emma

2014-01-01

Med tankar från pedagogen Montessori och filosoferna Platon och Baudrillard har detta arbete behandlat frågor om datorn och dess betydelse för en grafiker. Frågeställningen formulerades efter hand och lydde tillslut: ”Hur kan materia te sig i digital form?” Forskningen resulterade i en hypotes för hur digital materia skulle födas i datorn: genom att blanda två uppsättningar av data, såsom två genuppsättningar tillsammans skapar en ny organism. Under produktionen utvecklades därmed en metod fö...

Alla ska ha kul! : Parodisk barnkultur och publik i nutida kommersiell animation

OpenAIRE

Milia, Mirella

2006-01-01

Barnfilmen har länge haft en undanskymd plats inom filmteori. Man har tidigare intresserad sig för den i termer av ideologisk påverkan eller pedagogisk nytta alternativt onytta, men intresse för frågor som rör mer specifika textmekanismer har hittills dröjt. En sådan fråga är, exempelvis, hur barnfilmen konstruerar eller implicerar sin egen åskådare. Med tanke på att motsvarande problema¬tik har dragit till sig många barnlitteraturforskares intresse, är det märkligt att en liknande omsorg int...

Interkulturell kommunikation i en kinesisk kontext : En undersökning av svenska och kinesiska företagsrepresentanters upplevelser av det interkulturella mötet. Ett teoretiskt perspektiv på en praktisk utmaning.

OpenAIRE

Hjalmarsson, Ida

2010-01-01

Jag har genom en förberedande fältstudie, litteraturgenomgång och enkätintervjuer undersökt svenska och kinesiska företagsrepresentanters upplevelser av det interkulturella mötet, med utgångspunkt i svenska företag som opererar på den kinesiska marknaden. Det var uppsatsens syfte och jag har utgått ifrån frågeställningen: Hur upplever svenska och kinesiska företagsrepresentanter det interkulturella mötet? Subfrågor till denna är: Vilka kulturella faktorer skapar det kinesiska sättet att kommu...

Utveckling av riktningsanalys exergiberäkningar i Luleå och Strängnäs kommuner eller Hur kan man veta om man hushållar med resurserna på ett hållbart sätt?

OpenAIRE

Delin, Staffan; Gundelius, Eva

1998-01-01

Bakgrunden till projektet är den riktningsanalys som utvecklades av Eva Grundelius år 1991. Riktningsanalysen som är uppbyggd kring sex frågor fungerar som en checklista för hållbar utveckling. Den kan användas i många slag av beslutssituationer. För att göra riktningsanalysen mer operativ och kvantifierbar har den i detta projekt kopplats samman med en exergianalys. Exergi är ett fysiskt mått på resursers värde. Denna analys görs med utgångspunkt från det livsuppehållande systemet, ekosystem...

Svensk Botanisk Tidskrift : Volym 77: Häfte 5, 1983

OpenAIRE

1983-01-01

INNEHÅLLSFÖRTECKNING. O. ENGELMARK: Skogarna bränns i amerikanska nationalparker. K.-A. OLSSON: Pilgrimsveronika (Veronica peregrina) funnen i NÖ Skåne. Botanik från början: Öst är öst och väst är väst. I. ELVERS: Ultraviolettfotografering av blommor. B. WIDÉN och M. WIDÉN: Judasörat (Hirneola auricula-judae) i nordvästra Skåne. K. BOHLIN och M. JEPPSON: Frågor kring blåtryffeln, Chamonixia caespitosa. Hallingbäck/Holmåsens mossflora i starkare band. L. JERLING: Populationsdynamik hos gulkäm...

Antioksidacijska svojstva i stabilnost boje crvenog piva, ružičastog vina i ružičastog pjenušca

OpenAIRE

Šipalo, Toni

2016-01-01

Biološki aktivne supstancije u pivu i vinu, posebice fenoli, zbog antioksidacijske aktivnosti smanjuju rizik za oboljenje od sve učestalijih kroničnih bolesti. Udjel fenolnih spojeva jedan je od najvažnijih parametara sastava, kako piva, tako i vina, budući da doprinose njihovim organoleptičkim svojstvima, kao što su boja, trpkost i gorčina. U ovom su radu uspoređena antioksidacijska svojstva Istarskog crvenog piva, ružičastog vina i ružičastog pjenušca primjenom različitih testova: određivan...

A renormalizable extension of the NJL-model

International Nuclear Information System (INIS)

Langfeld, K.; Kettner, C.; Reinhardt, H.

1996-01-01

The Nambu-Jona-Lasinio model is supplemented by the quark interaction generated by the one-gluon exchange. The employed gluon propagator exhibits the correct large-momentum behavior of QCD, whereas the Landau pole at low energies is screened. The emerging constituent quark model is one-loop renormalizable and interpolates between the phenomenologically successful Nambu-Jona-Lasinio model (modified by a transversal projector) at low energies and perturbative QCD at high momenta. Consequently, the momentum dependence of the quark self-energy at high energy coincides with the prediction from perturbative QCD. The chiral phase transition is studied in dependence on the low-energy four-quark interaction strength in the Dyson-Schwinger equation approach. The critical exponents of the quark self-energy and the quark condensate are obtained. The latter exponent deviates from the NJL-result. Pion properties are addressed by means of the Bethe-Salpeter equation. The validity of the Gell-Mann-Oakes-Renner relation is verified. Finally, we study the conditions under which the Nambu-Jona-Lasinio model is a decent approximation to our renormalizable theory as well as the shortcoming of the NJL-model due to its inherent non-renormalizability. (orig.)

Barriers and Health Beliefs Related to Weight Management Among Veterans With Human Immunodeficiency Virus.

Science.gov (United States)

Munro, Shannon; Dinatale, Emily; Hartley, Sarah; St Jacques, Monica; Oursler, Kris Ann

2017-01-01

The success of antiretroviral therapy has led to dramatic changes in causes of morbidity and mortality among U.S. Veterans with human immunodeficiency virus (HIV). Among the 25,000 Veterans treated for HIV, 70% are over age 50 and the rate of obesity has doubled in this population. Veterans with HIV have a 50% increased risk of myocardial infarction yet have limited presence in prevention-related programs designed to lower cardiovascular disease risk. This mixed methods study (focus groups, Schwarzer and Renner physical activity, and nutrition self-efficacy questionnaires) was used to explore factors related to health behavior and identify barriers that overweight Veterans with HIV face in enrolling in the MOVE weight management program. Institutional review board approval was granted before the start of the study. All participants were recruited from the Infectious Disease clinic if they met national inclusion criteria for the MOVE weight management program and had not previously participated in the program. Transcribed audio recordings were independently analyzed and coded by four of the researchers using an exploratory process to obtain consensus regarding themes. An interrater reliability analysis for the Kappa statistic was performed to determine consistency among raters. The relationship between physical activity self-efficacy scores and nutrition self-efficacy scores was tested using Spearman's correlation coefficient. The median age of the sample was 56 with high rates of diabetes (36%), hypertension (73%), hyperlipidemia (36%), and tobacco use history (82%). External barriers to participation were discussed in addition to 8 other themes, which influence treatment engagement for Veterans with obesity and HIV including adaptation, stigma, self-management, and support. Veterans held strong beliefs about responsibility and commitment to their health and wanted to assume an active and informed role in their health care. Veterans with high levels of perceived

Identification a novel MYOC gene mutation in a Chinese family with juvenile-onset open angle glaucoma.

Science.gov (United States)

Zhao, Xin; Yang, Chaoshan; Tong, Yi; Zhang, Xiaohui; Xu, Liang; Li, Yang

2010-08-25

To describe the clinical and genetic findings in one Chinese family with juvenile-onset open angle glaucoma (JOAG). One family was examined clinically and a follow-up took place 5 years later. After informed consent was obtained, genomic DNA was extracted from the venous blood of all participants. Linkage analysis was performed with three microsatellite markers around the MYOC gene (D1S196, D1S2815, and D1S218) in the family. Mutation screening of all coding exons of MYOC was performed by direct sequencing of PCR-amplified DNA fragments and restriction fragment length polymorphism (RFLP) analysis. Bioinformatics analysis by the Garnier-Osguthorpe-Robson (GOR) method predicted the effects of variants detected on secondary structures of the MYOC protein. Clinical examination and pedigree analysis revealed a three- generation family with seven members diagnosed with JOAG, three with ocular hypertension, and five normal individuals. Through genotyping, the pedigree showed a linkage to the MYOC on chromosome 1q24-25. Mutation screening of MYOC in this family revealed an A-->T transition at position 1348 (p. N450Y) of the cDNA sequence. This missense mutation co-segregated with the disease phenotype of the family, but was not found in 100 normal controls. Secondary structure prediction of the p.N450Y by the GOR method revealed the replacement of a coil with a beta sheet at the amino acid 447. Early onset JOAG, with incomplete penetrance, is consistent with a novel mutation in MYOC. The finding provides pre-symptomatic molecular diagnosis for the members of this family and is useful for further genetic consultation.

Konflikter, ogräs eller frön? : Arbetsplatskonflikter utifrån ett ledarskapsperspektiv

OpenAIRE

Aarvaag, Evalinda; Lindroth, Linda

2016-01-01

Det gemensamma intresset för konflikter grundade idén att studera väl ansedda ledares perspektiv på arbetsplatskonflikter och hur dessa ledare löser konflikter konstruktivt. I grunden finns en undran om väl ansedda ledare har förmågor som gör att de löser konflikter mer konstruktivt. Konflikter utgör en stor del av en ledares arbetstid. Konflikter kan förmodligen inte undvikas men hur konflikter hanteras är avgörande för att en organisation och dess anställda skall mogna och utvecklas. Det ha...

Particle manipulation by a non-resonant acoustic levitator

Science.gov (United States)

Andrade, Marco A. B.; Pérez, Nicolás; Adamowski, Julio C.

2015-01-01

We present the analysis of a non-resonant acoustic levitator, formed by an ultrasonic transducer and a concave reflector. In contrast to traditional levitators, the geometry presented herein does not require the separation distance between the transducer and the reflector to be a multiple of half wavelength. The levitator behavior is numerically predicted by applying a numerical model to calculate the acoustic pressure distribution and the Gor'kov theory to obtain the potential of the acoustic radiation force that acts on a levitated particle. We also demonstrate that levitating particles can be manipulated by controlling the reflector position while maintaining the transducer in a fixed position.

Officer Career Development: Cross-Sectional Sample -- Fiscal Years 1986 - 1987

Science.gov (United States)

1991-09-01

DESIG WOR GOR RET TRAN I LOCATION 2. Expected - -- - - -- B2A 1 02201 2. Rarely know - - - - - - - B2B 1 0221 3. Procedures- - - - - - - - B2C 1 0222 4...E9B7 - - - - - - 1 0545 4. Recruiting E9El1 E9Bl1 - - - - - - 1 0546 5. PG School E9E13 E9B13 - - - - - - 1 0547 NOTES: Respose sale iffes in SOResponse...Cont. F21D F32D - GlOD - - - - 1 0767I 5.Tickets F21E F32E - GIOE - - - - 1 0768 NOTES: Respose sale iffes in IDEIG 1=f n iporanc 2 =O moerae iporane

Applied Nuclear Physics at Kenyatta University

International Nuclear Information System (INIS)

Hashim, N.

2017-01-01

Laboratory Facilities include Water Cherenkov counter for measurement of cosmic ray muons – Kenyatta University and Sodium Iodide Detector . Research Findings include a typical g-ray spectrum of sand samples from Diani, South Kenya, W.O. Gor (2017) , Radioactivity concentration values measured in soil samples from Shinyalu, Western Kenya. M.E. Khabana (2017) , Estimated doses from soil samples from Minjingu, Arusha, Tanzania, J. Herman (2017 and Monte Carlo simulation of g-rays transport in concrete J.P. Were (2017), Linear attenuation coefficient for g-rays in concrete J.P. Were (2017) and Mass attenuation coefficient for g-rays in PbO-polymer composites, K.O. Erick (2017)

Particle manipulation by a non-resonant acoustic levitator

Energy Technology Data Exchange (ETDEWEB)

Andrade, Marco A. B., E-mail: marcobrizzotti@gmail.com [Institute of Physics, University of São Paulo, CP 66318, 05314-970 São Paulo (Brazil); Pérez, Nicolás [Centro Universitario de Paysandú, Universidad de la República, Ruta 3 km 363, 60000 Paysandú (Uruguay); Adamowski, Julio C. [Department of Mechatronics and Mechanical Systems Engineering, Escola Politécnica, University of São Paulo, Av. Mello Moraes, 2231, 05508-030 São Paulo (Brazil)

2015-01-05

We present the analysis of a non-resonant acoustic levitator, formed by an ultrasonic transducer and a concave reflector. In contrast to traditional levitators, the geometry presented herein does not require the separation distance between the transducer and the reflector to be a multiple of half wavelength. The levitator behavior is numerically predicted by applying a numerical model to calculate the acoustic pressure distribution and the Gor'kov theory to obtain the potential of the acoustic radiation force that acts on a levitated particle. We also demonstrate that levitating particles can be manipulated by controlling the reflector position while maintaining the transducer in a fixed position.

Particle manipulation by a non-resonant acoustic levitator

International Nuclear Information System (INIS)

Andrade, Marco A. B.; Pérez, Nicolás; Adamowski, Julio C.

2015-01-01

We present the analysis of a non-resonant acoustic levitator, formed by an ultrasonic transducer and a concave reflector. In contrast to traditional levitators, the geometry presented herein does not require the separation distance between the transducer and the reflector to be a multiple of half wavelength. The levitator behavior is numerically predicted by applying a numerical model to calculate the acoustic pressure distribution and the Gor'kov theory to obtain the potential of the acoustic radiation force that acts on a levitated particle. We also demonstrate that levitating particles can be manipulated by controlling the reflector position while maintaining the transducer in a fixed position

Musikbranschen i förändring : Artistens möjligheter med och utan skivbolag

OpenAIRE

Järnström, Sofia Maria

2011-01-01

Syftet med mitt examensarbete är att undersöka i vilken utsträckning artister kan nå en publik utan att ingå ett skivkontrakt och att klargöra för vilka kanaler som finns tillgäng-liga för självständig marknadsföring. Undersökningen är kvalitativ och jag kommer att fokusera på fyra intervjuer med personer inom branschen. Jag fokuserar på dessa frågor: 1) Hur kan en artist nå ut med sin musik, utan att ha ett skivbolag bakom sig som marknadsförare och distributör? 2) Vilka nya...

Tableaux vivants. Museum’s representation in movies

Directory of Open Access Journals (Sweden)

Chiara Tartarini

2012-02-01

Full Text Available This article aims to highlight some aspects that mark the cinematographic representation of museum, in the belief that movies are profitable to comprehend the nature of museum institution and the way it acts on the imaginary. It will be considered some movies (Night at the Museum; Russian Ark; Belfégor; Bande à part; All the Vermeers in New York; Dressed to Kill, La Ville Louvre, with a focus on Straub-Huillet’s Une visite au Louvre, where the idea of narrative sequence is challenged, bringing back cinema to an intensive immobility and suggesting that museum can be a place of a shared poetics.

Ownership of solution and and evolved gas: Technical and legal perspectives

Energy Technology Data Exchange (ETDEWEB)

Carlson, M. R. [Applied Reservoir Engineering and Evaluation (Canada); Friesen, J. G. [McCarthy Tetrault (Canada)

1995-05-01

A recent judgement of the Alberta Court of Appeal in `Prism Petroleum Ltd. et al vs. Omega Hydrocarbons Ltd.` affirmed earlier decisions, but failed to to resolve engineering issues such as terminology, PVT behaviour, producing mechanisms, the significance of an initial GOR, gas evolution in reservoirs, classification of oil and gas wells, concurrent production, enhanced recovery requirements, solution gas conservation and the effects of offset production. Some uncertainty also remained regarding the interpretation of the wording of the lease, responsibilities for costs of drilling, completion, surface facilities, operations where there has been a trespass, unjust enrichment, estoppel and limitation periods. The uncertainties regarding these legal and engineering concerns were addressed.

The nature of advanced reasoning and science instruction

Science.gov (United States)

Lawson, Anton E.

Although the development of reasoning is recognized as an important goal of science instruction, its nature remains somewhat of a mystery. This article discusses two key questions: Does formal thought constitute a structured whole? And what role does propositional logic play in advanced reasoning? Aspects of a model of advanced reasoning are presented in which hypothesis generation and testing are viewed as central processes in intellectual development. It is argued that a number of important advanced reasoning schemata are linked by these processes and should be made a part of science instruction designed to improve students' reasoning abilities.Concerning students' development and use of formal reasoning, Linn (1982) calls for research into practical issues such as the roles of task-specific knowledge and individual differences in performance, roles not emphasized by Piaget in his theory and research. From a science teacher's point of view, this is good advice. Accordingly, this article will expand upon some of the issues raised by Linn in a discussion of the nature of advanced reasoning which attempts to reconcile the apparent contradiction between students' differential use of advanced reasoning schemata in varying contexts with the notion of a general stage of formal thought. Two key questions will be discussed: Does formal thought constitute a structured whole? And what role does propositional logic play in advanced reasoning? The underlying assumption of the present discussion is that, among other things, science instruction should concern itself with the improvement of students' reasoning abilities (cf. Arons, 1976; Arons & Karplus, 1976; Bady, 1979; Bauman, 1976; Educational Policies Commission, 1966; Herron, 1978; Karplus, 1979; Kohlberg & Mayer, 1972; Moshman & Thompson, 1981; Lawson, 1979; Levine & linn, 1977; Pallrand, 1977; Renner & Lawson, 1973; Sayre & Ball, 1975; Schneider & Renner, 1980; Wollman, 1978). The questions are of interest because to

Device independent quantum key distribution secure against coherent attacks with memoryless measurement devices

International Nuclear Information System (INIS)

McKague, Matthew

2009-01-01

Device independent quantum key distribution (QKD) aims to provide a higher degree of security than traditional QKD schemes by reducing the number of assumptions that need to be made about the physical devices used. The previous proof of security by Pironio et al (2009 New J. Phys. 11 045021) applies only to collective attacks where the state is identical and independent and the measurement devices operate identically for each trial in the protocol. We extend this result to a more general class of attacks where the state is arbitrary and the measurement devices have no memory. We accomplish this by a reduction of arbitrary adversary strategies to qubit strategies and a proof of security for qubit strategies based on the previous proof by Pironio et al and techniques adapted from Renner.

Anonymity-Preserving Public-Key Encryption

DEFF Research Database (Denmark)

Kohlweiss, Markulf; Maurer, Ueli; Onete, Cristina

2013-01-01

security properties have been proposed. We investigate constructions as well as limitations for preserving receiver anonymity when using public-key encryption (PKE). We use the constructive cryptography approach by Maurer and Renner and interpret cryptographic schemes as constructions of a certain ideal...... literature (IND-CCA, key-privacy, weak robustness). We also show that a desirable stronger variant, preventing the adversary from selective ”trial-deliveries” of messages, is unfortunately unachievable by any PKE scheme, no matter how strong. The constructive approach makes the guarantees achieved...... by applying a cryptographic scheme explicit in the constructed (ideal) resource; this specifies the exact requirements for the applicability of a cryptographic scheme in a given context. It also allows to decide which of the existing security properties of such a cryptographic scheme are adequate...

MISIR ÇEŞİTLERİNDE FARKLI VİGOR TESTLERİNİN DEĞERLENDİRİLMESİ

OpenAIRE

TEZCAN, Hatice

2008-01-01

Arastırma laboratuar ve tarla kosulları olmak üzere iki asamada 2007-2008 yıllarındayürütülmüstür. Denemede materyal olarak; ülkemizde üretimi yapılan Karaçay, Side,Maverik, Mitic, Bora, Sele, Shemal, RX 770 ve RX 9292 at disi mısır çesitlerikullanılmıstır.Laboratuar asamasında, mısır çesitlerine standart çimlenme testi ve soguk test,kompleks stres vigor testi, çim büyüme oran testi ve iletkenlik testi olmak üzere dörtfarklı vigor testi uygulanmıstır. Tarla denemesi, Ankara Üniversitesi Ziraa...

SHuffle, a novel Escherichia coli protein expression strain capable of correctly folding disulfide bonded proteins in its cytoplasm

Directory of Open Access Journals (Sweden)

Lobstein Julie

2012-05-01

Full Text Available Abstract Background Production of correctly disulfide bonded proteins to high yields remains a challenge. Recombinant protein expression in Escherichia coli is the popular choice, especially within the research community. While there is an ever growing demand for new expression strains, few strains are dedicated to post-translational modifications, such as disulfide bond formation. Thus, new protein expression strains must be engineered and the parameters involved in producing disulfide bonded proteins must be understood. Results We have engineered a new E. coli protein expression strain named SHuffle, dedicated to producing correctly disulfide bonded active proteins to high yields within its cytoplasm. This strain is based on the trxB gor suppressor strain SMG96 where its cytoplasmic reductive pathways have been diminished, allowing for the formation of disulfide bonds in the cytoplasm. We have further engineered a major improvement by integrating into its chromosome a signal sequenceless disulfide bond isomerase, DsbC. We probed the redox state of DsbC in the oxidizing cytoplasm and evaluated its role in assisting the formation of correctly folded multi-disulfide bonded proteins. We optimized protein expression conditions, varying temperature, induction conditions, strain background and the co-expression of various helper proteins. We found that temperature has the biggest impact on improving yields and that the E. coli B strain background of this strain was superior to the K12 version. We also discovered that auto-expression of substrate target proteins using this strain resulted in higher yields of active pure protein. Finally, we found that co-expression of mutant thioredoxins and PDI homologs improved yields of various substrate proteins. Conclusions This work is the first extensive characterization of the trxB gor suppressor strain. The results presented should help researchers design the appropriate protein expression conditions using

Characterization of methane emissions from five cold heavy oil production with sands (CHOPS) facilities.

Science.gov (United States)

Roscioli, Joseph R; Herndon, Scott C; Yacovitch, Tara I; Knighton, W Berk; Zavala-Araiza, Daniel; Johnson, Matthew R; Tyner, David R

2018-03-07

Cold heavy oil production with sands (CHOPS) is a common oil extraction method in the Canadian provinces of Alberta and Saskatchewan that can result in significant methane emissions due to annular venting. Little is known about the magnitude of these emissions, nor their contributions to the regional methane budget. Here the authors present the results of field measurements of methane emissions from CHOPS wells and compare them with self-reported venting rates. The tracer ratio method was used not only to analyze total site emissions but at one site it was also used to locate primary emission sources and quantify their contributions to the facility-wide emission rate, revealing the annular vent to be a dominant source. Emissions measured from five different CHOPS sites in Alberta showed large discrepancies between the measured and reported rates, with emissions being mainly underreported. These methane emission rates are placed in the context of current reporting procedures and the role that gas-oil ratio (GOR) measurements play in vented volume estimates. In addition to methane, emissions of higher hydrocarbons were also measured; a chemical "fingerprint" associated with CHOPS wells in this region reveals very low emission ratios of ethane, propane, and aromatics versus methane. The results of this study may inform future studies of CHOPS sites and aid in developing policy to mitigate regional methane emissions. Methane measurements from cold heavy oil production with sand (CHOPS) sites identify annular venting to be a potentially major source of emissions at these facilities. The measured emission rates are generally larger than reported by operators, with uncertainty in the gas-oil ratio (GOR) possibly playing a large role in this discrepancy. These results have potential policy implications for reducing methane emissions in Alberta in order to achieve the Canadian government's goal of reducing methane emissions by 40-45% below 2012 levels within 8 yr.

GORLİN - GOLTZ SENDROMU OLGU BİLDİRİSİ-GORLIN-GOLTZ SYNDROME (CASE REPORT)

OpenAIRE

Timoçin, Necla; Doğan, Özen

2013-01-01

ÖZETGorlin-Goltz sendromu, multipl çene kistleri, bazal hücreli tıevus, bazal hücreli karsînom, iskeletsel anomaliler ve bazı yumuşak doku lezyonlan ile karakterize bir hastalıktır. Sendromun bugüne kadar 40'a yakın bulguları bildirilmiştir. Bu makalede multipl çene kistleri ve tipik yüz görünümlerinden yola çıkılarak incelemeye alınıp,sendroma ait bazı iskeletsel anomalilerin saptanması üzerine Gor-Hn-Goltz Sendromu tanısı konan iki olgu bildirilmektedir.Anahtar sözcükler : Gorlin-Goltz...

Abort inom den islamiska rättstraditionen

OpenAIRE

Sayed, Mosa

2013-01-01

Den svenska patientpopulationens stora heterogenitet, exempelvis med hänsyn till etnicitet, kultur, religion och nationell härkomst, kan på olika sätt påverka hur patienter uppfattar vad som utgör god vård. Islam och muslimer utgör idag en del av det svenska samhället och representerar en beaktansvärd del av dem som vänder sig till hälso- och sjukvården. Forskning om islam och frågor rörande hälso- och sjukvård i den svenska kontexten är dock begränsad. Inte minst gäller det synen på abort in...

Buying and selling oil and gas properties in Saskatchewan

International Nuclear Information System (INIS)

Lothian, E.C.

1997-01-01

During the last five years, Saskatchewan has experienced its highest level of activity in the oil and gas industry, in terms of drilling and land acquisition. This study reviewed the unique concerns and issues affecting the acquisition or disposition of oil and gas assets in Saskatchewan. The two separate and distinct land registry systems regarding mines and mineral interests in Saskatchewan, due diligence issues, title and leasehold opinions and their limitations and environmental liabilities issues management were described. Some basic principles of contract law such as registration issues with respect to GOR's, and builder's lien pitfalls, as well as legal issues created by horizontal drilling, and legal issues associated with a Right of First Refusal, were also explained

Kundundersökning i restaurangen vid Hotel Red & Green

OpenAIRE

Vikstrand, Victoria

2015-01-01

Lärdomsprovets syfte är att undersöka kundnöjdheten på Hotel Red & Green i Närpes. Undersökningen är begränsad till restaurangdelen. Därmed omfattar undersökningen inte frågor som berör inkvarteringen. Eftersom detta är en primärundersökning inom företaget så undersöks i huvudsak kundnöjdheten på allmän nivå. Den teoretiska referensramen behandlar först case företaget Hotel Red & Green och dess verksamhet. Därefter förklaras servicens betydelse för ett tjänsteföretag. Där klargörs vad en kund...

Des bruits qu'on ne peut retenir

Directory of Open Access Journals (Sweden)

Brigitte Denker-Bercoff

2014-04-01

Full Text Available Le conte sénégalais « N'Gor Niébé » met en évidence une affinité entre le potin et le pet, que dénominations et expressions figées confirment en anglais comme en français. L'hypothèse est que le potin est l'équivalent d'une parole de sphincter, bassement corporelle par son contenu, son fonctionnement et sa fonction sociale. Tout comme le pet, il est à la fois vide, inconvenant et vital. S'il agit comme un régulateur entre pouvoir de l'individu et pouvoir de la communauté, il demande lui-même à être régulé.

Tillståndslös kommunikation: En studie av JavaScript-ramverk

OpenAIRE

Hansson, Christian

2016-01-01

Undersökningens syfte är att ta reda på hur JavaScript‐ramverk presterar i jämförelse med  ren JavaScript i en kommunikation med en webbservice. Kommunikationen med en  webbservice är tillståndslös. Detta innebär att en webbapplikations förfrågan mot en  webbservice alltid är en ny förfrågan. En webbservice kommer inte ihåg klientens tidigare  frågor.   Det finns idag en rad olika JavaScript‐ramverk som klarar av en kommunikation av sådan  karaktär. Denna undersökning kommer att utvärdera pre...

Post waterflood CO{sub 2} miscible flood in light oil, fluvial - dominated deltaic reservoirs. Technical progress report, 4th quarter, fiscal year 1994, July 1, 1994--September 30, 1994

Energy Technology Data Exchange (ETDEWEB)

1994-10-15

Production from the Port Neches project has reached a new high of 500 BOPD, as shown. Production from several wells has improved after changing WAGer and CO{sub 2} injection patterns. The WAG process appears to be effective in FDD reservoirs. The WAT process has improved the oil production rates and simultaneously decreased the CO{sub 2} production rates from wells with high GOR. Material balance calculations indicate that the reservoir pressure remained relatively flat, and a new BHP will be taken this month to verify the calculations. Total CO{sub 2} injection is averaging about 9.5 MMCFD, including 3.9 MMCFD purchased from Cardox, as shown, and the balance is recycled from the producing wells. Over 50% of the gas was produced from one well, Khun No. 33. A CO{sub 2} injection line was installed to huff-puff well Khun No. 6 that did not respond yet to CO{sub 2} injection in well Khun No. 17. After injecting a limited CO{sub 2} volume in well Khun No. 6, this will be followed by a short shut-in period, then the well will be placed on production.

GLAG theory for superconducting property variations with A15 composition in Nb3Sn wires.

Science.gov (United States)

Li, Yingxu; Gao, Yuanwen

2017-04-25

We present a model for the variation of the upper critical field H c2 with Sn content in A15-type Nb-Sn wires, within the Ginzburg-Landau-Abrikosov-Gor'kov (GLAG) theory frame. H c2 at the vicinity of the critical temperature T c is related quantitatively to the electrical resistivity ρ, specific heat capacity coefficient γ and T c . H c2 versus tin content is theoretically formulated within the GLAG theory, and generally reproduces the experiment results. As Sn content gradually approaches the stoichiometry, A15-type Nb-Sn undergoes a transition from the dirty limit to clean limit, split by the phase transformation boundary. The H-T phase boundary and pinning force show different behaviors in the cubic and tetragonal phase. We dipict the dependence of the composition gradient on the superconducting properties variation in the A15 layer, as well as the curved tail at vicinity of H c2 in the Kramer plot of the Nb 3 Sn wire. This helps understanding of the inhomogeneous-composition inducing discrepancy between the results by the state-of-art scaling laws and experiments.

Reduktion av slöseri inom den spanska ölindustrin : – en studie av åtgärder och metoder i spåren av krisen

OpenAIRE

Carlström, Carl

2014-01-01

Den rådande eurokrisen har påverkat det spanska samhället och den spanska ölindustrin negativt. Industrin står inför utmaningar vad gäller minskad försäljning och förändrade kundpreferenser. I tider då intäkterna och försäljningen minskar finns det många sätt att öka sina marginaler. Ett av detta sätt är att börja arbeta med resurseffektivitet och att se till att slöseriet av de resurser man har minskar. De frågor studien besvarar är hur bryggeriindustrin i Spanien har arbetat för att minska ...

Cough associated with gastro-oesophageal reflux disease (GORD): Japanese experience.

Science.gov (United States)

Niimi, Akio

2017-12-01

Differences in the aetiology as well as patient background of chronic cough have been recognised among US, UK, and Japan. One of the marked differences has been the prevalence of gastro-oesophageal reflux disease (GORD), which has been one of the top three causes in Western countries. It was indeed uncommon or rare in Japan, but, with the increasing prevalence of GOR itself, chronic cough associated with GORD seems to have become more common. In this article, cough associated with GORD will be reviewed based on literature and our Japanese experience. Further, potentially broader relevance of GORD in chronic cough will also be mentioned, highlighting the potential importance of dysmotiliy/non-acid reflux. Copyright © 2017 Elsevier Ltd. All rights reserved.

Kognitiv beteendeterapi i skolan

OpenAIRE

Nummelin, Maria; Almetun Englund, Britt

2008-01-01

Syftet med studien var att få en ökad förståelse och insyn i vad kognitiv beteendeterapi- KBT är, och ta reda på om den stökiga skolmiljön som ofta förekommer, kan förbättras med hjälp av KBT. Våra forskningsfrågor behandlar: Vad är kognitiv beteendeterapi? Vilka förutsättningar krävs bland personalen för att arbeta med KBT vid en skola? När kan det vara lämpligt att pedagogerna i skolan använder sig av KBT? Hur använder pedagogerna KBT i skolan. Studien har genomförts genom bearbetning av re...

Urolithiasis: evaluation, dietary factors, and medical management

DEFF Research Database (Denmark)

Jung, Helene; Andonian, Sero; Assimos, Dean

2017-01-01

PURPOSE: The aim of this review was to provide current best evidence for evaluation, dietary, and medical management of patients with urolithiasis. METHODS: Literature addressing evaluation, dietary, and medical management of urolithiasis was searched. Papers were analyzed and rated according...... the life of stone-forming individuals very differently, and that evaluation and medical management should be personalized according to risk of recurrence, severity of stone disease, presence of associated medical conditions, and patient's motivation. With regard to evaluation, dietary and medical...... management of patients with urolithiasis evidence from the literature suggest that selective metabolic evaluation may lead to rational dietary and medical management. Statements based on LOE and GOR are provided to guide clinical practice. CONCLUSION: The provided evidence for evaluation of patients...

Quality of life and visual acuity outcomes in the Registry in Glaucoma Outcomes Research study.

Science.gov (United States)

Coleman, Anne L; Lum, Flora C; Gliklich, Richard E; Velentgas, Priscilla; Su, Zhaohui

2016-01-01

The RiGOR study evaluated the association of treatment and patient-reported outcomes for open-angle glaucoma patients. The Glaucoma Symptom Scale (National Eye Institute-Visual Function Questionnaire (NEI-VFQ) and visual acuity (VA) were collected as quality of life measures. The proportion of patients with improvement of at least two lines of vision was highest in the incisional surgery group (14.2% compared with 9.9% for laser surgery and 10.9% for additional medication). No clinically relevant differences were seen in benefit for the laser surgery or incisional surgery groups compared with additional medications for the Glaucoma Symptom Scale or NEI-VFQ measures or subscales. Differences in quality of life by race need to be explored in further studies.

Can ι(1440) be a pseudoscalar glueball which appreciably mixes with η'(958) ?

International Nuclear Information System (INIS)

Teshima, Tadayuki; Oneda, Sadao.

1987-01-01

We have studied the η-η'-ι mixing by using the Gell-Mann-Oakes-Renner type approach to the chiral U(3) x U(3) and also U(4) x U(4) algebras involving anomaly and found that η'-ι mixing could be appreciable. The model also predicted (by using PCAC and also sometimes a simple quark counting argument) that while the rate of ι → γγ is relatively small, Γι → ργ) will be rather large ≅ 1 MeV. The η-η'-ι mixing has also been studied by us using the method of ''asymptotic flavor SU(3) symmetry plus the constraint algebras involving the generators of underlying symmetry groups of QCD''. Essentially the same conclusion as derived in the first approach has been obtained for the structures of η-η'-ι mixing. In this paper, we study the ι → γγ and ι → ργ decays in the second approach without using quark counting argument. We find a result which is compatible (at least in flavor SU(3) symmetry studied) with that of the first approach. We conclude that a part of the present experimental situation can be understood with the presence of pseudoscalar glueball ι(1440) which mixes rather appreciably with the η'. Critical experiments for the model are also discussed. (author)

Non-nutritive sucking for gastro-oesophageal reflux disease in preterm and low birth weight infants.

Science.gov (United States)

Psaila, Kim; Foster, Jann P; Richards, Robyn; Jeffery, Heather E

2014-10-15

Gastro-oesophageal reflux (GOR) is commonly diagnosed in the neonatal population (DiPietro 1994), and generally causes few or no symptoms (Vandenplas 2009). Conversely, gastro-oesophageal reflux disease (GORD) refers to GOR that causes troublesome symptoms with or without complications such as damage to the oesophagus (Vandenplas 2009). Currently there is no evidence to support the range of measures recommended to help alleviate acid reflux experienced by infants. Non-nutritive sucking (NNS) has been used as an intervention to modulate neonatal state behaviours through its pacifying effects such as decrease infant fussiness and crying during feeds (Boiron 2007; Pickler 2004). To determine if NNS reduces GORD in preterm infants (less than 37 weeks' gestation) and low birth weight (less than 2500 g) infants, three months of age and less, with signs or symptoms suggestive of GORD, or infants with a diagnosis of GORD. We performed computerised searches of the electronic databases of the Cochrane Central Register of Controlled Trials (CENTRAL) (Issue 9, 2013), MEDLINE (1966 to September 2013), CINAHL (1982 to September 2013), and EMBASE (1988 to September 2013). We applied no language restrictions. Controlled trials using random or quasi-random allocation of preterm infants (less than 37 weeks' gestation) and low birth weight (less than 2500 g) infants three months of age and less with signs or symptoms suggestive of GORD, or infants with a diagnosis of GORD. We included studies reported only by abstracts, and cluster and cross-over randomised trials. Two review authors independently reviewed and selected trials from searches, assessed and rated study quality and extracted relevant data. We identified two studies from the initial search. After further review, we excluded both studies. We identified no studies examining the effects of NNS for GORD in preterm and low birth weight infants There was insufficient evidence to determine the effectiveness of NNS for GORD

Zakrzepowa plamica małopłytkowa – diagnostyka i leczenie

Directory of Open Access Journals (Sweden)

Jolanta Korsak

2013-12-01

Full Text Available Zakrzepowa plamica małopłytkowa (thrombotic thrombocytopenic purpura, TTP początkowo charakteryzowała się pentadą objawów: małopłytkowością, niedokrwistością hemolityczną mikroangiopatyczną, zaburzeniami układu nerwowego, niewydolnością nerek i gorączką. Jednak u 35% chorych z rozpoznaniem TTP nie stwierdza się wszyst‑ kich tych dolegliwości: nie występują u nich objawy neurologiczne, zaburzenia funkcji nerek oraz gorączka. Obec‑ nie zakrzepową plamicę małopłytkową rozpoznaje się na podstawie małopłytkowości i niedokrwistości mikroangiopatycznej. Diagnostyka obejmuje badanie morfologiczne krwi obwodowej wraz z rozmazem, badanie czynności nerek i oznaczenie aktywności LDH. Pomocne w rozpoznaniu jest oznaczenie aktywności metaloprote‑ azy ADAMTS13 i miana przeciwciał anty-ADAMTS13. W terapii w pierwszym rzucie stosuje się plazmaferezę lecz‑ niczą – powinna ona zostać przeprowadzona nawet wtedy, gdy diagnoza jest niepewna. Plazmafereza usuwa mul‑ timery ULvWF i nabyte przeciwciała skierowane przeciw ADAMTS13. Przetoczenie osocza nie jest tak efektywne jak plazmafereza, lecz może być stosowane tymczasowo. Efekt leczenia oceniany jest na podstawie unormowa‑ nia się aktywności LDH oraz ustąpienia małopłytkowości, niedokrwistości i zmian neurologicznych. Inną możli‑ wością terapeutyczną jest podawanie glikokortykosteroidów oraz immunoglobulin. U niektórych chorych korzystne może być wykonanie splenektomii. Ostatnio stosuje się także rytuksymab – powoduje on redukcję miana inhibitora ADAMTS13 i wzrost aktywności enzymu. Po leczeniu rytuksymabem odnotowano remisje kliniczne w przypad‑ kach, w których zawiodły inne metody terapii.

Analysis of a Non-resonant Ultrasonic Levitation Device

Science.gov (United States)

Andrade, Marco A. B.; Pérez, Nicolás; Adamowski, Julio C.

In this study, a non-resonant configuration of ultrasonic levitation device is presented, which is formed by a small diameter ultrasonic transducer and a concave reflector. The influence of different levitator parameters on the levitation performance is investigated by using a numerical model that combines the Gor'kov theory with a matrix method based on the Rayleigh integral. In contrast with traditional acoustic levitators, the non-resonant ultrasonic levitation device allows the separation distance between the transducer and the reflector to be adjusted continually, without requiring the separation distance to be set to a multiple of half-wavelength. It is also demonstrated, both numerically and experimentally, that the levitating particle can be manipulated by maintaining the transducer in a fixed position in space and moving the reflector in respect to the transducer.

The Globe: Exhibitions and Events

CERN Multimedia

2007-01-01

Globe of Science and Innovation Route de Meyrin, 1211 Geneva Conference Nano materials: small dimensions, big opportunities Thursday 22 November at 8.00 p.m. Christoph Renner, Professor of Physics and Deputy Director of MaNEP*Information technologies have developed at an incredible pace over the past sixty years. Mobile phones, MP3 players and other modern gizmos are infinitely more powerful than the first computers, which took up whole rooms! The main driving force behind this evolutionary process has been the boom in the miniaturisation of electronic components. The latest technological innovations have led to a new range of tools being developed, allowing matter to be visualised, manipulated and characterised at the smallest possible scales, molecule by molecule and even atom by atom. At these scales, the behaviour of matter is altered as the conventional properties of mass are gradually taken over by quantum effects with which we are quite unfamiliar in our everyday li...

Bell's theorem, accountability and nonlocality

International Nuclear Information System (INIS)

Vona, Nicola; Liang, Yeong-Cherng

2014-01-01

Bell's theorem is a fundamental theorem in physics concerning the incompatibility between some correlations predicted by quantum theory and a large class of physical theories. In this paper, we introduce the hypothesis of accountability, which demands that it is possible to explain the correlations of the data collected in many runs of a Bell experiment in terms of what happens in each single run. Under this assumption, and making use of a recent result by Colbeck and Renner (2011 Nature Commun. 2 411), we then show that any nontrivial account of these correlations in the form of an extension of quantum theory must violate parameter independence. Moreover, we analyze the violation of outcome independence of quantum mechanics and show that it is also a manifestation of nonlocality. This article is part of a special issue of Journal of Physics A: Mathematical and Theoretical devoted to ‘50 years of Bell's theorem’. (paper)

Contested spacing: International non-profit organizations and the mobility of asylum seekers

DEFF Research Database (Denmark)

Albu, Oana Brindusa

The importance of examining space from an organizational standpoint is timely, not the least because the use of this concept has critical and often unintended social, and political effects (Mengis, Nicolini & Gorli, 2016). The global refugee crisis following the post-2015 Syrian conflict is perhaps...... one indicative situation of the highly contested ways in which international non-profit organizations (INGOs) create spaces for their organizational activities (e.g., build informal settlements to provide emergency aid), and thus affect how individuals (e.g., asylum seekers) get re-settled, confined...... to, or even restricted from living in such spaces. These matters are relevant since in the contexts where both the opportunities to move freely and being at peace are challenged, space is not only a neutral structure in which such contested organizing takes place (Mengis et al., 2016). Rather...

Carrier phase altimetry using Zeppelin based GNSS-R observations and water gauge reference data

Science.gov (United States)

Semmling, Maximilian; Schön, Steffen; Beckheinrich, Jamila; Beyerle, Georg; Ge, Maorong; Wickert, Jens

2014-05-01

The increasing number of transmitters in global navigation satellite systems (GNSS), like GPS, Galileo, Glonass or Compass, provide observations with an increasing coverage for positioning but also for remote sensing. A space based GNSS remote sensing application is radio occultation, a limb sounding method. Globally distributed vertical profiles of temperature, water vapour and electron density are provided operationally for weather forecast and ionospheric monitoring. Another application is GNSS reflectometry (GNSS-R) that is currently developed especially for ocean remote sensing. The high reflection coefficient of water is crucial for GNSS-R. This study presents a method that uses GNSS phase observations for lake altimetry with the potential for ocean application. Phase observations are deduced from a GORS (GNSS Occultaction Reflectometry Scatterometry) receiver in Master-Slave-Configuration. The Master sampling dedicated for direct signal acquisition is connected to an up-looking antenna with right hand circular polarization (RHCP). Two Slave samplings dedicated for acquisition of the reflected signals are connected to down-looking antennas with right- and left-hand circular polarization (RHCP and LHCP). Based on in-phase and quad-phase (I, Q) sample components, an altimetric phase residual is retrieved. This residual can be related to the height of the reflecting surface. An altimetric challenge arises from the unknown ambiguity of phase residuals that introduces a height bias. The presented study uses ancillary data deduced from water gauges to mitigate the ambiguity bias. Reference tracks are formed by linear surface height interpolation between the water gauge stations. At crossover points of reflection tracks with reference tracks a phase ambiguity estimate is determined for bias mitigation. For this study airborne GNSS measurements were conducted aboard a Zeppelin NT (New Technology) airship with a geodetic receiver for navigation and a GORS receiver for

Influence of the focal point position on the properties of a laser-produced plasma

International Nuclear Information System (INIS)

Kasperczuk, A.; Pisarczyk, T.; Badziak, J.; Miklaszewski, R.; Parys, P.; Rosinski, M.; Wolowski, J.; Stenz, CH.; Ullschmied, J.; Krousky, E.; Masek, K.; Pfeifer, M.; Rohlena, K.; Skala, J.; Pisarczyk, P.

2007-01-01

This paper deals with investigations of the influence of the focusing lens focal point position on the properties of a plasma produced by a defocused laser beam. The experiment was carried out at the Prague Asterix Laser System iodine laser [K. Jungwirth, A. Cejnarova, L. Juha, B. Kralikova, J. Krasa, E. Krousky, P. Krupickova, L. Laska, K. Masek, T. Mocek, M. Pfeifer, A. Prag, O. Renner, K. Rohlena, B. Rus, J. Skala, P. Straka, and J. Ullschmied, Phys. Plasmas 8, 2495 (2001)] by using the third harmonic of laser radiation (λ=0.438 μm), laser energy of 70 J, pulse duration of 250 ps (full width at half-maximum), and beam spot radii of 250 and 400 μm. Cu and Ta were chosen as target materials. The experimental data were obtained by means of a three-frame interferometric system, ion collectors, and crater replica techniques. The reported results allow formulating an important hypothesis that the laser-produced plasma modifies strongly the laser intensity distribution. It is shown how such a modification depends on the relative position and distance of the focal point to the target surface. Of particular importance is whether the focal point is located inside or in front of the target. The irradiation geometry is crucial for the possibility of generating plasma jets by laser radiation. Well-formed jet-like plasma structures can be created if an initially homogeneous laser intensity distribution is transformed in the plasma to an annular one

Locking depth and slip-rate of the Húsavík Flatey fault, North Iceland, derived from continuous GPS data 2006-2010

KAUST Repository

Metzger, Sabrina

2011-11-01

Located at the northern shore of Iceland, the Tjörnes Fracture Zone (TFZ) is a 120 km offset in the mid-Atlantic Ridge that connects the offshore Kolbeinsey Ridge to the on-land Northern Volcanic Zone. This transform zone is seismically one of the most active areas in Iceland, exposing the population to a significant risk. However, the kinematics of the mostly offshore area with its complex tectonics have not been adequately resolved and the seismic potential of the two main transform structures within the TFZ, the Grímsey Oblique Rift (GOR) and the Húsavík Flatey Fault (HFF) in particular, is not well known. In summer 2006, we expanded the number of continuous GPS (CGPS) stations in the area from 4 to 14. The resulting GPS velocities after four years of data collection show that the TFZ accommodates the full plate motion as it is predicted by the MORVEL plate motion model. In addition, ENVISAT interferograms reveal a transient uplift signal at the nearby Theistareykir central volcano with a maximum line-of-sight uplift of 3 cm between summers of 2007 and 2008. We use a combination of an interseismic backslip and a Mogi model in a homogeneous, elastic half-space to describe the kinematics within the TFZ. With a non-linear optimization approach we fit the GPS observations and estimate the key model parameters and their uncertainties, which are (among others) the locking depth, the partition of the transform motion between the two transform structures within the TFZ and the slip rate on the HFF. We find a shallow locking depth of 6.3+1.7- 1.2 km and transform motion that is accommodated 34 ± 3 per cent by the HFF and 66 ± 3 per cent by the GOR, resulting in a slip velocity of 6.6 ± 0.6 mm yr-1 for the HFF. Assuming steady accumulation since the last two large M6.5 earthquakes in 1872 the seismic potential of the fault is equivalent to a Mw6.8 ± 0.1 event.

Zakażenia pałeczkami Legionella pneumophila – opis przypadku

Directory of Open Access Journals (Sweden)

Bolesław Kalicki

2011-12-01

Full Text Available Legionella pneumophila jest wewnątrzkomórkowym patogenem zasiedlającym środowiska wodne. Do zakażenia dochodzi drogą inhalacji zakażonego aerozolu, rzadziej poprzez aspirację. Rozprzestrzenianie się zachodzi drogą krwionośną, limfatyczną i przez ciągłość. Choroba rozwija się w postaci dwóch klinicznie odrębnych zespołów: choroby legionistów i gorączki Pontiac. Pozapłucne postaci legionelozy spotyka się niezmiernie rzadko. Powikłania mogą występować w postaci niedodmy, wysięku, zrostów, ropni płuc, ropniaków opłucnej, przetok oskrzelowo-opłucnowych, a w konsekwencji mogą prowadzić do niewydolności wielonarządowej. W diagnostyce zakażenia Legionella pneumophila stosuje się izolację i hodowlę bakterii uzyskanych z tkanek chorego na specjalnych podłożach, metody genetyczne bądź też testy serologiczne. W leczeniu skuteczne są antybiotyki z grupy makrolidów, a w ciężkiej postaci choroby także fluorochinolony. Leczeniem alternatywnym jest kombinacja trimetoprym + sulfametoksazol. W artykule przedstawiono opis przypadku 14-letniego chłopca, który został przyjęty do Kliniki z powodu gorączki, osłabienia, wymiotów, bólów brzucha i głowy. U dziecka wykonano serię badań wyjaśniających przyczynę dolegliwości. Stwierdzono podwyższone wykładniki stanu zapalnego z towarzyszącą leukopenią i trombocytopenią. W przebiegu choroby pojawiły się kaszel i wysypka. W badaniach dodatkowych wysunięto podejrzenie zajęcia układu sercowo-naczyniowego. Podejrzewając zakażenie atypowe, do leczenia dołączono makrolid, po którym uzyskano poprawę stanu klinicznego i ustąpienie objawów. Otrzymany później wynik badania w kierunku Legionella pneumophila wskazywał na możliwość zakażenia o tej etiologii.

Komplexitet för kvalitet i lärande och undervisning: bedömning av komplexa problem och studenters resonemang

Directory of Open Access Journals (Sweden)

Sofia Kjellström

2011-03-01

Full Text Available Vi utbildar studenter för att de ska ha möjlighet att lösa mycket komplexa samhällsproblem,men hur vet vi att de har utvecklat de former av tänkande och handlande som krävs? Forskning visar att vuxna tänker, talar och handlar utifrån olika nivåer av komplexitet, och att utbildning i hög grad påverkar människors förmågor. Model of Hierarchical Complexity(MHC är en teori som beskriver hur komplext information sätts samman och hur komplext personer resonerar i en fråga, vanligtvis på någon av nivåerna konkret, abstrakt, formellt, systematiskt eller metasystematisk. Syftet med denna artikel är att introducera MHC och visa på dess relevans som verktyg inom högre utbildning. Med hjälp av teorin är det möjligt att analysera både hur komplex en uppgift är och hur studenter klarar av att lösa den, vilket speglar förståelse inom ett ämne. Med modellen som mått på komplexitet tydliggörs svårighetsgraden i det som ska läras och på vilken nivå studenterna klarar att ta till sig kunskapsinnehållet. Avslutningsvis diskuteras hur studenter kan stödjas att utvecklasina förmågor till komplext resonerande och därmed skapa kvalitet i både lärande och undervisningOne of the aims of higher education is to teach students to solve complex problems, but what is the complexity of problems and the reasoning of students? The Model of Hierarchical Complexity (MHC is a theory applicable to all domains in which information is organized and accounts for increases in behavioral complexity which includes cognitive or reasoning complexity. The paper is a theoretical introduction to MHC as a tool for teaching in higher education. The model clarifies and shows the gap between the complexity in the subject and the students understanding of the same subject. We also discuss how to support the development of more complex reasoning in students.

Environmental genotoxicity and risk assessment in the Gulf of Riga (Baltic Sea) using fish, bivalves, and crustaceans.

Science.gov (United States)

Butrimavičienė, Laura; Baršienė, Janina; Greiciūnaitė, Janina; Stankevičiūtė, Milda; Valskienė, Roberta

2018-06-21

Environmental genotoxicity in the Gulf of Riga was assessed using different bioindicators (fish, clams, and isopods) collected from 14 study stations. Comparison of genotoxicity responses (micronuclei (MN) and nuclear buds (NB)) in blood erythrocytes of herring (Clupea harengus), eelpout (Zoarces viviparous), and flounder (Platichthys flesus) revealed the species- and site-specific differences. For the first time, the analysis of genotoxicity was carried out in gill cells of isopods Saduria entomon. The highest inductions of MN and NB in gill cells of investigated S. entomon and clams (Macoma balthica) were evaluated in specimens from station 111A (offshore zone). In fish, the highest incidences of MN were measured in eelpout and in herring collected in the southern part of Gulf of Riga (station GOR3/41S). Moreover, in the southern coastal area, the assessment of genotoxicity risk (according to micronuclei levels) indicated exceptionally high risk for flounder, eelpout, and clams.

Superconductivity and spin fluctuations in M-Zr metallic glasses (M = Cu, Ni, Co, and Fe)

International Nuclear Information System (INIS)

Altounian, Z.; Strom-Olsen, J.O.

1983-01-01

The superconducting transition temperature, upper critical field, and magnetic susceptibility have been measured in four binary metallic glass systems: Cu-Zr, Ni-Zr, Co-Zr, and Fe-Zr. For each alloy system, a full and continuous range of Zr-rich compositions accessible by melt spinning has been examined. For Cu-Zr, the range is 0.75>x>0.30; for Ni-Zr, 0.80>x>0.30; for Co-Zr, 0.80>x>0.48, and for Fe-Zr, 0.80>x>0.55 (x being the concentration of Zr in at. %). The results show clearly the influence of spin fluctuations in reducing the superconducting transition temperature. The data have been successfully analyzed using a modified form of the McMillan equation together with expressions for the Stoner enhanced magnetic susceptibility and the Ginsburg-Landau-Abrikosov-Gor'kov expression for the upper critical field

Temperature behavior of the hole density of (Bi,Pb)-2212 single crystals

Energy Technology Data Exchange (ETDEWEB)

Ghafari, Aliakbar; Janowitz, Christoph; Dwelk, Helmut; Krapf, Alica; Manzke, Recardo [Institute of Physics, Humboldt University of Berlin, Newtonstr. 15, D-12489 Berlin (Germany); Ariffin, Ahmad Kamal [Dept. of Physics, Universiti Pendidikan Sultan Idris, 35900 Tanjong Malim (Malaysia)

2012-07-01

One of the most puzzling anomalies of high-T{sub c} cuprates is the strong temperature dependence of the Hall coefficient (R{sub H}) and the hole density (n{sub H}). Gor'kov and Teitel'baum (GT) showed by using experimental data of La{sub 2-x}Sr{sub x}CuO{sub 4} (LSCO) that the number of holes per Cu atom, n{sub H}, changes with temperature according to n{sub H}(T,x)=n{sub 0}(x)+n{sub 1}(x)exp(-{Delta}(x)/T). To clarify the temperature dependence of n{sub H} we have determined n{sub H} by X-ray absorption spectra (XAS) at the CuL{sub 3} edge for nearly optimum and slightly underdoped (Bi,Pb)-2212 single crystals. Our results point out that the GT formula cannot fit our data and therefore must be extended to the three terms.

A broader definition of occupancy: A reply to Hayes and Monofils

Science.gov (United States)

Fatif, Quresh; Ellis, Martha M.; Amundson, Courtney L.

2015-01-01

Occupancy models are widely used to analyze presence–absence data for a variety of taxa while accounting for observation error (MacKenzie et al. 2002, 2006; Tyre et al. 2003; Royle and Dorazio 2008). Hayes and Monfils (2015) question their use for analyzing avian point count data based on purported violations of model assumptions incurred by avian mobility. Animal mobility is an important consideration, not just for occupancy models, but for a variety of population and habitat models (Boyce 2006, Royle et al. 2009, Manning and Goldberg 2010, Dormann et al. 2013, Renner et al. 2015). Nevertheless, we believe the ultimate conclusions of Hayes and Monfils are shortsighted mainly due to a narrow interpretation of occupancy. Rather than turn away from the use of occupancy models, we believe they remain an appropriate method for analyzing many data sets collected from avian point count surveys. Further, we suggest that there is value in having a broader and more nuanced interpretation of occupancy that incorporates the potential for animal movement. 

Surface-hopping trajectories for OH(A{sup 2}Σ{sup +}) + Kr: Extension to the 1A″ state

Energy Technology Data Exchange (ETDEWEB)

Perkins, T.; McCrudden, G.; Brouard, M., E-mail: mark.brouard@chem.ox.ac.uk [The Department of Chemistry, The Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ (United Kingdom); Herráez-Aguilar, D.; Aoiz, F.J., E-mail: aoiz@quim.ucm.es [Departamento de Química Física, Facultad de Química, Universidad Complutense, 28040 Madrid (Spain); Kłos, J., E-mail: jklos@umd.edu [Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742 (United States)

2015-04-14

We present a new trajectory surface hopping study of the rotational energy transfer and collisional quenching of electronically excited OH(A) radicals by Kr. The trajectory surface hopping calculations include both electronic coupling between the excited 2{sup 2}A′ and ground 1{sup 2}A′ electronic states, as well as Renner-Teller and Coriolis roto-electronic couplings between the 1{sup 2}A′ and 1{sup 2}A″, and the 2{sup 2}A′ and 1{sup 2}A″ electronic states, respectively. The new calculations are shown to lead to a noticeable improvement in the agreement between theory and experiment in this system, particularly with respect to the OH(X) rotational and Λ-doublet quantum state populations, compared with a simpler two-state treatment, which only included the electronic coupling between the 2{sup 2}A′ and 1{sup 2}A′ states. Discrepancies between the predictions of theory and experiment do however remain, and could arise either due to errors in the potential energy surfaces and couplings employed, or due to the limitations in the classical treatment of non-adiabatic effects.

Application of artificial intelligence to forecast hydrocarbon production from shales

Directory of Open Access Journals (Sweden)

Palash Panja

2018-03-01

Full Text Available Artificial intelligence (AI methods and applications have recently gained a great deal of attention in many areas, including fields of mathematics, neuroscience, economics, engineering, linguistics, gaming, and many others. This is due to the surge of innovative and sophisticated AI techniques applications to highly complex problems as well as the powerful new developments in high speed computing. Various applications of AI in everyday life include machine learning, pattern recognition, robotics, data processing and analysis, etc. The oil and gas industry is not behind either, in fact, AI techniques have recently been applied to estimate PVT properties, optimize production, predict recoverable hydrocarbons, optimize well placement using pattern recognition, optimize hydraulic fracture design, and to aid in reservoir characterization efforts. In this study, three different AI models are trained and used to forecast hydrocarbon production from hydraulically fractured wells. Two vastly used artificial intelligence methods, namely the Least Square Support Vector Machine (LSSVM and the Artificial Neural Networks (ANN, are compared to a traditional curve fitting method known as Response Surface Model (RSM using second order polynomial equations to determine production from shales. The objective of this work is to further explore the potential of AI in the oil and gas industry. Eight parameters are considered as input factors to build the model: reservoir permeability, initial dissolved gas-oil ratio, rock compressibility, gas relative permeability, slope of gas oil ratio, initial reservoir pressure, flowing bottom hole pressure, and hydraulic fracture spacing. The range of values used for these parameters resemble real field scenarios from prolific shale plays such as the Eagle Ford, Bakken, and the Niobrara in the United States. Production data consists of oil recovery factor and produced gas-oil ratio (GOR generated from a generic hydraulically

Treatment of supragastric belching with cognitive behavioral therapy improves quality of life and reduces acid gastroesophageal reflux.

Science.gov (United States)

Glasinovic, E; Wynter, E; Arguero, J; Ooi, J; Nakagawa, K; Yazaki, E; Hajek, P; Psych, C Clin; Woodland, P; Sifrim, D

2018-04-01

Excessive supragastric belching (SGB) manifests as troublesome belching, and can be associated with reflux and significant impact on quality of life (QOL). In some GERD patients, SGB-associated reflux contributes to up to 1/3 of the total esophageal acid exposure. We hypothesized that a cognitive-behavioral intervention (CBT) might reduce SGB, improve QOL, and reduce acid gastroesophageal reflux (GOR). We aimed to assess the effectiveness of CBT in patients with pathological SGB. Patients with SGB were recruited at the Royal London Hospital. Patients attended CBT sessions focused on recognition of warning signals and preventative exercises. Objective outcomes were the number of SGBs, esophageal acid exposure time (AET), and proportion of AET related to SGBs. Subjective evaluation was by patient-reported questionnaires. Of 51 patients who started treatment, 39 completed the protocol, of whom 31 had a follow-up MII-pH study. The mean number of SGBs decreased significantly after CBT (before: 116 (47-323) vs. after 45 (22-139), P50%. In patients with increased AET at baseline, AET after CBT was decreased: 9.0-6.1% (P=0.005). Mean visual analog scale severity scores decreased after CBT (before: 260 (210-320) mm vs. after: 140 (80-210) mm, Pacid reflux predominantly driven by SGB. In these patients, CBT can reduce esophageal acid exposure.

Breakdown of the balanced lethals in Rhoeo: the structure of the Alethal Renner complex of the homozygotic stock of Rhoeo.

Science.gov (United States)

Golczyk, H

2011-01-01

Fluorescence in situ hybridization, base-specific fluorescence, C-banding and silver-staining were performed to reveal the cyto-molecular constitution of the karyotype in the bivalent-forming Rhoeo spathacea concolor. It was shown that the genome of this form is almost identical to the β-complex of the ring-forming rhoeos. In spite of some modifications in the arrangement of a few distal rDNA sites and in the amount of pericentromeric AT-rich heterochromatin, the alethal genome of the bivalent-forming Rhoeo seems segmentally unaltered. Thus, the breakdown of balanced lethals in Rhoeo is most likely uncoupled from creating new chromosome arm combinations. Copyright © 2011 S. Karger AG, Basel.

Pengaruh Iklan Nike Versi “Just Do IT” Di Twitter Terhadap Kesadaran Merek Pada Komunitas Futsal Gor Panam Raya Square

OpenAIRE

Fauzi, Hanifan; ", Suyanto

2017-01-01

In this era of globalization, changes occur so quickly in the economic, social, cultural. This naturally brings about changes in the needs and interests of human beings as consumers increasingly complex. Manufacturers have to change and adjust marketing strategies and product patterns according to the situation, conditions and demands of consumers today. This is clearly evident in the marketing concept which was originally only a product-oriented and sales (product concept and sales concept),...

Synthesis and Free Radical Scavenging Activity of New Hydroxybenzylidene Hydrazines.

Science.gov (United States)

Sersen, Frantisek; Gregan, Fridrich; Kotora, Peter; Kmetova, Jarmila; Filo, Juraj; Loos, Dusan; Gregan, Juraj

2017-05-29

Hydroxybenzylidene hydrazines exhibit a wide spectrum of biological activities. Here, we report synthesis and free radical scavenging activity of nine new N-(hydroxybenzylidene)-N'-[2,6-dinitro-4-(trifluoromethyl)]phenylhydrazines. The chemical structures of these compounds were confirmed by 1H-NMR, 13C-NMR, 19F-NMR, IR spectroscopy, LC-MS, and elemental analysis. The prepared compounds were tested for their activity to scavenge 2,2-diphenyl-1-picrylhydrazyl (DPPH), galvinoxyl radical (GOR), and 2,2'-azino-bis(3-ethylbenzothiazoline)-6-sulphonic acid (ABTS) radicals. The free radical scavenging activity expressed as SC50 values of these compounds varied in a wide range, from a strong to no radical scavenging effect. The most effective radical scavengers were hydroxybenzylidene hydrazines containing three hydroxyl groups in the benzylidene part of their molecules. The prepared compounds were also tested for their activity to inhibit photosynthetic electron transport in spinach chloroplasts. IC50 values of these compounds varied in wide range, from an intermediate to no inhibitory effect.

Simulation on the start-up of MED seawater desalination system coupled with nuclear heating reactor

International Nuclear Information System (INIS)

Ge Zhihua; Du Xiaoze; Yang Lijun; Yang Yongping; Wu Shaorong

2008-01-01

The mathematical control model for dynamic start-up process of the VTE-MED seawater desalination system was established employing the previous developed non-linear differential equations for system design and performance analysis. The influences on the start-up process of the operating parameters, such as the initial feed brine flow rate and the top brine temperature were analyzed. The relationships among the feed brine flow rate, the gained output ratio (GOR) and the start-up time were also investigated, which can be evidence to determine the optimal initial feed brine flow rate. The results also indicate that the system can consume the total heat rating generated by the low temperature nuclear heating reactor (LT-NHR) even at the most initial start-up stage, implying the present desalination system has excellent coupling characteristics with the LT-NHR. With necessary experiments verifications, the start-up control model developed in this paper can be the theoretical base for the analysis of dynamic performances of the seawater desalination system

Post waterflood CO{sub 2} miscible flood in light oil fluvial dominated deltaic reservoirs. Second quarterly technical progress report, [January 1, 1995--March 31, 1995

Energy Technology Data Exchange (ETDEWEB)

NONE

1995-07-01

Production from the Marg Area 1 at Port Neches is averaging 392 barrels of oil per day (BOPD) for this quarter. The production drop is due to fluctuation in both GOR and BS&W on various producing well, coupled with low water injectivity in the reservoir. We were unable to inject any tangible amount of water in the reservoir since late January. Both production and injection problems are currently being evaluated to improve reservoir performance. Well Kuhn (No. 6) was stimulated with 120 MMCF of CO{sub 2}, and was placed on production in February 1, 1995. The well was shut in for an additional month after producing dry CO{sub 2} initially. The well was opened again in early April and is currently producing about 40 BOPD. CO{sub 2} injection averaged 11.3 MMCFD including 4100 MMCFD purchased from Cardox, while water injection averaged 1000 BWPD with most of the injection occurring in the month of January.

Derivation and solution of a time-dependent, nonlinear, Schrodinger-like equation for the superconductivity order parameter

International Nuclear Information System (INIS)

Esrick, M.A.

1981-01-01

A time-dependent, nonlinear, Schrodinger-like equation for the superconductivity order parameter is derived from the Gor'kov equations. Three types of traveling wave solutions of the equation are discussed. The phases and amplitudes of these solutions propagate at different speeds. The first type of solution has an amplitude that propagates as a soliton and it is suggested that this solution might correspond to the recently observed propagating collective modes of the order parameter. The amplitude of the second type of solution propagates as a periodic disturbance in space and time. It is suggested that this type of solution might explain the recently observed multiple values of the superconductor energy gap as well as the spatially inhomogenous superconducting state. The third type of solution, which is of a more general character, might provide some insight into non-periodic, inhomogeneous states occuring in superconductors. It is also proposed that quasiparticle injection and microwave irradiation might generate soliton-like disturbances in superconductors

Mass current in 3He - A: Some exact representations and their London limit near zero temperature

International Nuclear Information System (INIS)

Malyshev, C.

1995-09-01

New representations for normal Green's function of the superfluid A-phase of helium-3 are obtained by an exact solution of the Dyson-Gor'kov equation. These representations result in new formulae for the mass current j-vector near zero temperature. Specific limiting cases for j-vector such ast the limit of lowest order in gradients, following the limit of zero temperature, and vice versa, are investigated. It is shown that the mass current previously known as j-vector = j-vector 0 , where j-vector 0 is an expression of first order in gradients, should be treated as a ''quasiclassical'' object in view of the approximations chosen. The parameter 1/χ implying the ''quasiclassics'', is a small quantity, as the London limit condition holds. Expansion of j-vector in powers of 1/χ is considered and first corrections to j-vector 0 are obtained at zero temperature, for two gauges of the order parameter. (author). 26 refs

Unique challenges lead to innovative solutions on PETROBRAS' P-63 project

Energy Technology Data Exchange (ETDEWEB)

Clark, David J; Dakin, Brian V [Amec Oil and Gas Americas, Houston, TX (United States)

2012-07-01

In early 2010, PETROBRAS accepted bids for the design, fabrication, installation and operation of the P-63 FPSO for the first three years of production starting in 2013. The field is to be produced using dry tree wells located at the adjacent P-61 tension leg platform (TLP) and subsea wells flowing to the P-63 floating production storage and offloading (FPSO) vessel. Production processing facilities are located primarily on the FPSO with multiple fluid transfer lines directing raw produced fluids from P-61 to P-63 for processing. The oil is a heavy crude with low associated gas, high viscosity, and emulsion forming tendency, all of which had significant impact on the equipment and piping design. The low GOR, relatively high power consumption, and location of the facility required the generators and ships boilers be capable of operating with stabilised crude as one of the fuel sources. In addition to the design issues noted, supply chain management challenges had to be overcome due to a contractual stipulation that required 65% Brazilian content. This paper will discuss some of the significant challenges that were faced and the solutions implemented to meet them including: Effects of heavy, high viscosity crude and emulsion on equipment selection and sizing, and piping sizing and layout; limited gas availability as production declines and the effect on power generation/drivers; use of reciprocating engine drivers for power generation; material selection; and interface management among the contractors involved. (author)

Unique challenges lead to innovative solutions on PETROBRAS' P-63 project

Energy Technology Data Exchange (ETDEWEB)

Clark, David J.; Dakin, Brian V. [Amec Oil and Gas Americas, Houston, TX (United States)

2012-07-01

In early 2010, PETROBRAS accepted bids for the design, fabrication, installation and operation of the P-63 FPSO for the first three years of production starting in 2013. The field is to be produced using dry tree wells located at the adjacent P-61 tension leg platform (TLP) and subsea wells flowing to the P-63 floating production storage and offloading (FPSO) vessel. Production processing facilities are located primarily on the FPSO with multiple fluid transfer lines directing raw produced fluids from P-61 to P-63 for processing. The oil is a heavy crude with low associated gas, high viscosity, and emulsion forming tendency, all of which had significant impact on the equipment and piping design. The low GOR, relatively high power consumption, and location of the facility required the generators and ships boilers be capable of operating with stabilised crude as one of the fuel sources. In addition to the design issues noted, supply chain management challenges had to be overcome due to a contractual stipulation that required 65% Brazilian content. This paper will discuss some of the significant challenges that were faced and the solutions implemented to meet them including: Effects of heavy, high viscosity crude and emulsion on equipment selection and sizing, and piping sizing and layout; limited gas availability as production declines and the effect on power generation/drivers; use of reciprocating engine drivers for power generation; material selection; and interface management among the contractors involved. (author)

An Experimental and Quantum Chemical Study of the Electronic Spectrum of the HBCl Free Radical

Science.gov (United States)

Gharaibeh, Mohammed A.; Nagarajan, Ramya; Clouthier, Dennis J.; Tarroni, Ricardo

2012-06-01

The chloroborane (HBCl) free radical has a complex electronic spectrum in the visible that involves a transition from a bent ground state to a linear excited state, both of which are the Renner-Teller components of what would be a ^2π state at linearity. We have used the synchronous-scan LIF and single vibronic level emission techniques to untangle the many overlapping vibronic bands and assign upper state K quantum numbers for jet-cooled HBCl and DBCl. The radicals were produced in a pulsed electric discharge jet using a precursor mixture of boron trichloride (BCl_3) and hydrogen or deuterium in high-pressure argon. As an important aid to understanding the data, the ground and excited state high level ab initio potential energy surfaces (PES) have been calculated and the vibrational levels obtained variationally. The calculated ground state levels are in excellent agreement with the emission data validating the quality of the PES. Aside from an approximately 100 cm-1 shift in the upper state electronic term value, the calculated excited state vibrational energy levels and isotope shifts match the LIF data very well, allowing the observed bands to be assigned with confidence.

Estratégias de avaliação de investimentos: Por que avaliar empresas?

Directory of Open Access Journals (Sweden)

Fernanda Lopes Vieira Ferreira

2016-06-01

Full Text Available Este artigo visa valorizar a importância da avaliação de investimentos para todos os participantes do mercado, entre investidores, empresários e funcionários das empresas de forma a promover a gestão baseada em valor, bem como sintetizar as principais estratégias para o processo da avaliação. Dado o volume de metodologias e parâmetros utilizados no processo de Valuation é importante que o avaliador entenda os modelos e premissas para utilização além de conhecer o investimento que será analisado. O documento analisa as Lojas Renner S.A. como estudo de caso e avalia o seu valor através da metodologia de fluxo de caixa descontado. De uma forma geral o artigo promove o conhecimento sobre o tema avaliação de empresas para orientar os tomadores de decisão nos processos de investimento e estimular a economia Brasileira, visto que como o retorno de um determinado investimento está diretamente associado ao risco é necessário primeiramente conhecê-lo a fim de mitigá-lo ou minimizá-lo.

Relativity made relatively easy

CERN Document Server

Steane, Andrew M

2012-01-01

Relativity Made Relatively Easy presents an extensive study of Special Relativity and a gentle (but exact) introduction to General Relativity for undergraduate students of physics. Assuming almost no prior knowledge, it allows the student to handle all the Relativity needed for a university course, with explanations as simple, thorough, and engaging as possible.The aim is to make manageable what would otherwise be regarded as hard; to make derivations as simple as possible and physical ideas as transparent as possible. Lorentz invariants and four-vectors are introduced early on, but tensor not

Solution gas flaring and venting at Alberta primary crude bitumen operations

Energy Technology Data Exchange (ETDEWEB)

Ruff, C. [Alberta Energy and Utilities Board, Calgary, AB (Canada)

2005-11-01

The Alberta Energy and Utilities Board is mandated by the Government of Alberta to ensure fair, responsible development and delivery of energy resources and utilities services in Alberta while maintaining the best public interest. One of the agencies' priorities is the reduction of solution gas flaring and venting. The performance of solution gas flaring and venting in Alberta and best practices respecting solution gas conservation are discussed. Data was presented on solution gas production, solution gas conserved, and solution gas conservation efficiency. The paper described best practices solutions such as increased gas to oil (GOR) test frequency; predetermination of economic gas conservation; collaboration with county gas utilities; and utilization of portable and scalable gas compression. The paper also presents a discussion of the Clean Air Strategic Alliance (CASA), a non-profit multistakeholder that recommended enhancements to Guide 60. Requirements discussed include the requirement to conserve solution gas at certain sites exceeding established flare and vent volumes, gas conservation prebuild requirements, and enhanced economic evaluation process. 5 figs.

Synthesis and Free Radical Scavenging Activity of New Hydroxybenzylidene Hydrazines

Directory of Open Access Journals (Sweden)

Frantisek Sersen

2017-05-01

Full Text Available Hydroxybenzylidene hydrazines exhibit a wide spectrum of biological activities. Here, we report synthesis and free radical scavenging activity of nine new N-(hydroxybenzylidene-N′-[2,6-dinitro-4-(trifluoromethyl]phenylhydrazines. The chemical structures of these compounds were confirmed by 1H-NMR, 13C-NMR, 19F-NMR, IR spectroscopy, LC-MS, and elemental analysis. The prepared compounds were tested for their activity to scavenge 2,2-diphenyl-1-picrylhydrazyl (DPPH, galvinoxyl radical (GOR, and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid (ABTS radicals. The free radical scavenging activity expressed as SC50 values of these compounds varied in a wide range, from a strong to no radical scavenging effect. The most effective radical scavengers were hydroxybenzylidene hydrazines containing three hydroxyl groups in the benzylidene part of their molecules. The prepared compounds were also tested for their activity to inhibit photosynthetic electron transport in spinach chloroplasts. IC50 values of these compounds varied in wide range, from an intermediate to no inhibitory effect.

Flood offers new hope for marginal oil fields

Energy Technology Data Exchange (ETDEWEB)

1966-03-14

The economics of producing a marginal Cardium sand oil field in west-central Alberta have been greatly improved by introduction of an inexpensive waterflood pressure maintenance and secondary recovery project. Canadian Gridoil Ltd. is now in full operation at its Willesden Green Cardium Unit No. 5. Of the 8.1 million bbl estimated original oil in place, only 9% would have been recoverable by primary depletion. The waterflood is calculated to add 13%, for ultimate recovery of 22% or 1.8 million bbl. This waterflood installation is considered a prototype of economical and profitable pressure maintenance systems which can be built to advantage in marginal oil fields in Alberta. Ultimate returns in the form of increased oil production and more than doubled oil recovery will be immensely greater than the capital investment of $195,000 in the facilities. Assuming GOR control and full well allowables, the entire capital cost should be paid out within 3 years. Life of the field is estimated at not less than 25 years.

Size, Shape and Impurity Effects on Superconducting critical temperature.

Science.gov (United States)

Umeda, Masaki; Kato, Masaru; Sato, Osamu

Bulk superconductors have their own critical temperatures Tc. However, for a nano-structured superconductor, Tc depends on size and shape of the superconductor. Nishizaki showed that the high pressure torsion on bulks of Nb makes Tc higher, because the torsion makes many nano-sized fine grains in the bulks. However the high pressure torsion on bulks of V makes Tc lower, and Nishizaki discussed that the decrease of Tc is caused by impurities in the bulks of V. We studied size, shape, and impurity effects on Tc, by solving the Gor'kov equations, using the finite element method. We found that smaller and narrower superconductors show higher Tc. We found how size and shape affects Tc by studying spacial order parameter distributions and quasi-particle eigen-energies. Also we studied the impurity effects on Tc, and found that Tc decreases with increase of scattering rate by impurities. This work was supported in part of KAKENHI Grant Number JP26400367 and JP16K05460, and program for leading graduate schools of ministry of education, culture, sports, science and technology-Japan.

Interference effects in the nonlinear charge density wave dynamics

International Nuclear Information System (INIS)

Jelcic, D.; Batistic, I.; Bjelis, A.

1987-12-01

The main features of the nonlinear charge density wave transport in the external dc-ac field are shown to be the natural consequences of resonant phase slip diffusion. This process is treated numerically within the time dependent Landau-Ginzburg model, developed by Gor'kov. The resonances in the ac field are manifested as Shapiro steps in I-V characteristics, present at all rational ratios of internal frequency of current oscillations and external ac frequency. The origin of Shapiro steps, as well as their forms and heights, are cosidered in detail. In particular, it is shown that close to resonances the phase slip voltage acquires a highly nonsinusoidal modulation which leads to the appearance of low frequency and satellite peaks in the Fourier spectrum. Taking into account the interference of adjacent phase slips and the segment or domain structure of physical samples, we interpret the finite width of steps, side wings, synchronization, incomplete and complete mode locking and some other effects observed in numerous experiments on NbSe 3 and other CDW materials. (author). 36 refs, 12 figs

Cross-Domain Analogies as Relating Derived Relations among Two Separate Relational Networks

Science.gov (United States)

Ruiz, Francisco J; Luciano, Carmen

2011-01-01

Contemporary behavior analytic research is making headway in analyzing analogy as the establishment of a relation of coordination among common types of trained or derived relations. Previous studies have been focused on within-domain analogy. The current study expands previous research by analyzing cross-domain analogy as relating relations among separate relational networks and by correlating participants' performance with a standard measure of analogical reasoning. In two experiments, adult participants first completed general intelligence and analogical reasoning tests. Subsequently, they were exposed to a computerized conditional discrimination training procedure designed to create two relational networks, each consisting of two 3-member equivalence classes. The critical test was a two-part analogical test in which participants had to relate combinatorial relations of coordination and distinction between the two relational networks. In Experiment 1, combinatorial relations for each network were individually tested prior to analogical testing, but in Experiment 2 they were not. Across both experiments, 65% of participants passed the analogical test on the first attempt. Moreover, results from the training procedure were strongly correlated with the standard measure of analogical reasoning. PMID:21547072

Used-habitat calibration plots: A new procedure for validating species distribution, resource selection, and step-selection models

Science.gov (United States)

Fieberg, John R.; Forester, James D.; Street, Garrett M.; Johnson, Douglas H.; ArchMiller, Althea A.; Matthiopoulos, Jason

2018-01-01

“Species distribution modeling” was recently ranked as one of the top five “research fronts” in ecology and the environmental sciences by ISI's Essential Science Indicators (Renner and Warton 2013), reflecting the importance of predicting how species distributions will respond to anthropogenic change. Unfortunately, species distribution models (SDMs) often perform poorly when applied to novel environments. Compounding on this problem is the shortage of methods for evaluating SDMs (hence, we may be getting our predictions wrong and not even know it). Traditional methods for validating SDMs quantify a model's ability to classify locations as used or unused. Instead, we propose to focus on how well SDMs can predict the characteristics of used locations. This subtle shift in viewpoint leads to a more natural and informative evaluation and validation of models across the entire spectrum of SDMs. Through a series of examples, we show how simple graphical methods can help with three fundamental challenges of habitat modeling: identifying missing covariates, non-linearity, and multicollinearity. Identifying habitat characteristics that are not well-predicted by the model can provide insights into variables affecting the distribution of species, suggest appropriate model modifications, and ultimately improve the reliability and generality of conservation and management recommendations.

Research note: exceptional absolute pitch perception for spoken words in an able adult with autism.

Science.gov (United States)

Heaton, Pamela; Davis, Robert E; Happé, Francesca G E

2008-01-01

Autism is a neurodevelopmental disorder, characterised by deficits in socialisation and communication, with repetitive and stereotyped behaviours [American Psychiatric Association (1994). Diagnostic and statistical manual for mental disorders (4th ed.). Washington, DC: APA]. Whilst intellectual and language impairment is observed in a significant proportion of diagnosed individuals [Gillberg, C., & Coleman, M. (2000). The biology of the autistic syndromes (3rd ed.). London: Mac Keith Press; Klinger, L., Dawson, G., & Renner, P. (2002). Autistic disorder. In E. Masn, & R. Barkley (Eds.), Child pyschopathology (2nd ed., pp. 409-454). New York: Guildford Press], the disorder is also strongly associated with the presence of highly developed, idiosyncratic, or savant skills [Heaton, P., & Wallace, G. (2004) Annotation: The savant syndrome. Journal of Child Psychology and Psychiatry, 45 (5), 899-911]. We tested identification of fundamental pitch frequencies in complex tones, sine tones and words in AC, an intellectually able man with autism and absolute pitch (AP) and a group of healthy controls with self-reported AP. The analysis showed that AC's naming of speech pitch was highly superior in comparison to controls. The results suggest that explicit access to perceptual information in speech is retained to a significantly higher degree in autism.

Impacts of Genome-Wide Analyses on Our Understanding of Human Herpesvirus Diversity and Evolution.

Science.gov (United States)

Renner, Daniel W; Szpara, Moriah L

2018-01-01

Until fairly recently, genome-wide evolutionary dynamics and within-host diversity were more commonly examined in the context of small viruses than in the context of large double-stranded DNA viruses such as herpesviruses. The high mutation rates and more compact genomes of RNA viruses have inspired the investigation of population dynamics for these species, and recent data now suggest that herpesviruses might also be considered candidates for population modeling. High-throughput sequencing (HTS) and bioinformatics have expanded our understanding of herpesviruses through genome-wide comparisons of sequence diversity, recombination, allele frequency, and selective pressures. Here we discuss recent data on the mechanisms that generate herpesvirus genomic diversity and underlie the evolution of these virus families. We focus on human herpesviruses, with key insights drawn from veterinary herpesviruses and other large DNA virus families. We consider the impacts of cell culture on herpesvirus genomes and how to accurately describe the viral populations under study. The need for a strong foundation of high-quality genomes is also discussed, since it underlies all secondary genomic analyses such as RNA sequencing (RNA-Seq), chromatin immunoprecipitation, and ribosome profiling. Areas where we foresee future progress, such as the linking of viral genetic differences to phenotypic or clinical outcomes, are highlighted as well. Copyright © 2017 Renner and Szpara.

Różnorodność manifestacji klinicznych zakażeń Mycoplasma pneumoniae. Obserwacje kliniczne

Directory of Open Access Journals (Sweden)

Agnieszka Lipińska-Opałka

2013-12-01

Full Text Available Zakażenie Mycoplasma pneumoniae stanowi złożony problem kliniczny. Jego najczęstszą manifestacją jest tzw. aty‑ powe zapalenie płuc, charakteryzujące się łagodnym przebiegiem, umiarkowanie podwyższoną temperaturą ciała oraz obecnością niewielkich zmian osłuchowych nad polami płucnymi. Nasilenie objawów zależne jest od wieku pacjenta. U starszych dzieci choroba może przebiegać pod postacią śródmiąższowego lub płatowego zapalenia płuc, czasem z zapaleniem opłucnej, a stany gorączkowe mogą osiągać wyższe wartości. Wspólnym i najbardziej charakterystycznym objawem zakażenia jest suchy, męczący kaszel, utrzymujący się od 4 do 6 tygodni. Poza ukła‑ dem oddechowym zakażenie M. pneumoniae może manifestować się objawami z niemal każdego narządu ludzkiego organizmu. Obserwuje się powikłania neurologiczne, sercowo-naczyniowe, ze strony przewodu pokarmowego, kostno-stawowe i skórne. Mnogość manifestacji klinicznych wynika z faktu, że obok bezpośredniego uszkadzania komórek nabłonkowych bakteria ma zdolność do stymulowania procesów autoimmunologicznych i prozakrzepowych. Diagnostyka zakażenia opiera się głównie na metodach serologicznych. W leczeniu stosuje się makrolidy, a czas trwania terapii wynosi minimum 2 tygodnie. W artykule przedstawiliśmy dwa przypadki zakażenia M. pneumoniae, znacznie różniące się przebiegiem klinicznym. U pierwszego pacjenta główną manifestacją zakażenia było zapale‑ nie płuc, które długo przebiegało z wysoką gorączką, zapaleniem opłucnej oraz obecnością licznych zmian osłu‑ chowych nad polami płucnymi. Dodatkowo występowały objawy ze strony przewodu pokarmowego pod postacią wymiotów i intensywnych bólów brzucha. Z kolei u drugiego pacjenta w przebiegu świeżego zakażenia M. pneumoniae i w obecności innych czynników ryzyka doszło do rozwoju masywnej zakrzepicy żył głębokich.

(Internationalistisk folkbildning: Säkerhetspolitik, nationalism och opinionsbildning i den svenska folkhögskolans mobilisering för utvecklingsfrågor 1950–1969

Directory of Open Access Journals (Sweden)

Sofia Österborg Wiklund

2018-05-01

Full Text Available (Internationalist Popular Education: Security Policy, Nationalism and Advocacy in the Swedish Folk High Schools’ Action on Development Issues 1950-1969 • Folk High Schools in Sweden have a long history of engaging internationally, especially as regards courses on development studies (u-landslinjer that emerged in the late sixties. The purpose of this article is to track some of the discourses about internationalisation, development and aid that preceded those courses, as well as to scrutinise ideas of the role of the Folk High School (folkhögskola in the emerging field of development aid. Analysing material from Tidskrift för svenska folkhögskolan (Journal of the Swedish Folk High School between 1950 and 1969, the study shows that the discourse on internationalism takes its starting point from an already established nationalism and nordism. National security also arises as an argument for engaging in development issues. The analysis also shows that there is a shift in the role of the Folk High School in the evolving development work; from “helping” to “advocating.” The results raise questions about how we can understand today’s Folk High School courses on global development against the background of the debates of the fifties and sixties.

Visualizing relativity: The OpenRelativity project

Science.gov (United States)

Sherin, Zachary W.; Cheu, Ryan; Tan, Philip; Kortemeyer, Gerd

2016-05-01

We present OpenRelativity, an open-source toolkit to simulate effects of special relativity within the popular Unity game engine. Intended for game developers, educators, and anyone interested in physics, OpenRelativity can help people create, test, and share experiments to explore the effects of special relativity. We describe the underlying physics and some of the implementation details of this toolset with the hope that engaging games and interactive relativistic "laboratory" experiments might be implemented.

Searching for the Optimal Sampling Solution: Variation in Invertebrate Communities, Sample Condition and DNA Quality.

Directory of Open Access Journals (Sweden)

Martin M Gossner

Full Text Available There is a great demand for standardising biodiversity assessments in order to allow optimal comparison across research groups. For invertebrates, pitfall or flight-interception traps are commonly used, but sampling solution differs widely between studies, which could influence the communities collected and affect sample processing (morphological or genetic. We assessed arthropod communities with flight-interception traps using three commonly used sampling solutions across two forest types and two vertical strata. We first considered the effect of sampling solution and its interaction with forest type, vertical stratum, and position of sampling jar at the trap on sample condition and community composition. We found that samples collected in copper sulphate were more mouldy and fragmented relative to other solutions which might impair morphological identification, but condition depended on forest type, trap type and the position of the jar. Community composition, based on order-level identification, did not differ across sampling solutions and only varied with forest type and vertical stratum. Species richness and species-level community composition, however, differed greatly among sampling solutions. Renner solution was highly attractant for beetles and repellent for true bugs. Secondly, we tested whether sampling solution affects subsequent molecular analyses and found that DNA barcoding success was species-specific. Samples from copper sulphate produced the fewest successful DNA sequences for genetic identification, and since DNA yield or quality was not particularly reduced in these samples additional interactions between the solution and DNA must also be occurring. Our results show that the choice of sampling solution should be an important consideration in biodiversity studies. Due to the potential bias towards or against certain species by Ethanol-containing sampling solution we suggest ethylene glycol as a suitable sampling solution when

Effective Field Theories for Hot and Dense Matter

Directory of Open Access Journals (Sweden)

Blaschke D.

2010-10-01

Full Text Available The lecture is divided in two parts. The first one deals with an introduction to the physics of hot, dense many-particle systems in quantum field theory [1, 2]. The basics of the path integral approach to the partition function are explained for the example of chiral quark models. The QCD phase diagram is discussed in the meanfield approximation while QCD bound states in the medium are treated in the rainbow-ladder approximation (Gaussian fluctuations. Special emphasis is devoted to the discussion of the Mott effect, i.e. the transition of bound states to unbound, but resonant scattering states in the continnum under the influence of compression and heating of the system. Three examples are given: (1 the QCD model phase diagram with chiral symmetry ¨ restoration and color superconductivity [3], (2 the Schrodinger equation for heavy-quarkonia [4], and (2 Pions [5] as well as Kaons and D-mesons in the finite-temperature Bethe-Salpeter equation [6]. We discuss recent applications of this quantum field theoretical approach to hot and dense quark matter for a description of anomalous J/ψ supression in heavy-ion collisions [7] and for the structure and cooling of compact stars with quark matter interiors [8]. The second part provides a detailed introduction to the Polyakov-loop Nambu–Jona-Lasinio model [9] for thermodynamics and mesonic correlations [10] in the phase diagram of quark matter. Important relationships of low-energy QCD like the Gell-Mann–Oakes–Renner relation are generalized to finite temperatures. The effect of including the coupling to the Polyakov-loop potential on the phase diagram and mesonic correlations is discussed. An outlook is given to effects of nonlocality of the interactions [11] and of mesonic correlations in the medium [12] which go beyond the meanfield description.

Is the Quantum State Real? An Extended Review of ψ-ontology Theorems

Directory of Open Access Journals (Sweden)

Matthew Saul Leifer

2014-11-01

Full Text Available Towards the end of 2011, Pusey, Barrett and Rudolph derived a theorem that aimed to show that the quantum state must be ontic (a state of reality in a broad class of realist approaches to quantum theory. This result attracted a lot of attention and controversy. The aim of this review article is to review the background to the Pusey–Barrett–Rudolph Theorem, to provide a clear presentation of the theorem itself, and to review related work that has appeared since the publication of the Pusey–Barrett–Rudolph paper. In particular, this review: Explains what it means for the quantum state to be ontic or epistemic (a state of knowledge; Reviews arguments for and against an ontic interpretation of the quantum state as they existed prior to the Pusey–Barrett–Rudolph Theorem; Explains why proving the reality of the quantum state is a very strong constraint on realist theories in that it would imply many of the known no-go theorems, such as Bell's Theorem and the need for an exponentially large ontic state space; Provides a comprehensive presentation of the Pusey–Barrett–Rudolph Theorem itself, along with subsequent improvements and criticisms of its assumptions; Reviews two other arguments for the reality of the quantum state: the first due to Hardy and the second due to Colbeck and Renner, and explains why their assumptions are less compelling than those of the Pusey–Barrett–Rudolph Theorem; Reviews subsequent work aimed at ruling out stronger notions of what it means for the quantum state to be epistemic and points out open questions in this area. The overall aim is not only to provide the background needed for the novice in this area to understand the current status, but also to discuss often overlooked subtleties that should be of interest to the experts. Quanta 2014; 3: 67–155.

Social relations: network, support and relational strain

DEFF Research Database (Denmark)

Due, P; Holstein, B; Lund, Rikke

1999-01-01

We introduce a conceptual framework with social relations as the main concept and the structure and the function of social relations as subconcepts. The structure of social relations covers aspects of formal relations and social network. The function of social relations covers social support......,011. The postal questionnaires were answered by a random sample in each of the age groups. The results show marked age and gender differences in both the structure and the function of social relations. The social network, measured as weekly contacts, weakens with age and so does instrumental support. Emotional...... support is unrelated to this decline in contact frequency and appears to be at the same level for younger and older individuals. Relational strain, measured as conflicts, declines with age for all kinds of social relations. The weakening of the social network with age does not seem to affect the level...

Incorporating Relation Paths in Neural Relation Extraction

OpenAIRE

Zeng, Wenyuan; Lin, Yankai; Liu, Zhiyuan; Sun, Maosong

2016-01-01

Distantly supervised relation extraction has been widely used to find novel relational facts from plain text. To predict the relation between a pair of two target entities, existing methods solely rely on those direct sentences containing both entities. In fact, there are also many sentences containing only one of the target entities, which provide rich and useful information for relation extraction. To address this issue, we build inference chains between two target entities via intermediate...

Public Relations & Media Relations (Kritik Budaya Amplop Pada Media Relations Institusi Pendidikan Di Yogyakarta

Directory of Open Access Journals (Sweden)

Adhianty Nurjanah

2015-07-01

Full Text Available This research is aims to determine how the media relations activities that have been done 10 Public Relations Higher Education, including the possibility of granting cultural envelope in media relations activities during this do. The object of this study is ten (10 Universities in Yogyakarta that consists of three (3 State University (PTN and seven (7 Colleges (PTS. Variations and types of media relations activities have been conducted by 10 universities. The reason is because the electoral college to ten (10 college is a big college in the city of Yogyakarta who own Public Relations and media relations activities that have a systematic and well-planned. In the course of media relations, Public Relations universities do culture accepting envelopes to reporters on the grounds reimburse the costs of transport and not as a "bribe" so that they publicized the news and as a means of imaging the institution. Publicist colleges feel that culture provides envelopes to reporters did not violate the code of ethics of their profession as a Public Relations, On the other hand for journalists, cultural granting envelope can interfere with the independence and constitute a violation of the code of ethics of their profession as journalists. Yet there are also journalists who will receive an envelope in their reporting activities. The discrepancies in the implementation of the code of ethics of journalism, is strongly influenced by the integrity of journalists and policies that apply to each media institution. Penelitian ini bertujuan untuk mengetahui bagaimana kegiatan media relations yang telah dilakukan 10 Public Relations / Humas Perguruan Tinggi tersebut, termasuk kemungkinan adanya budaya pemberian amplop dalam kegiatan media relations yang selama ini dilakukan. Objek penelitian ini adalah sepuluh (10 Perguruan Tinggi di Yogyakarta yang terdiri dari tiga (3 Perguruan Tinggi Negeri (PTN dan tujuh (7 Perguruan Tinggi Swasta (PTS . Beragam variasi dan jenis

Representing and querying now-relative relational medical data.

Science.gov (United States)

Anselma, Luca; Piovesan, Luca; Stantic, Bela; Terenziani, Paolo

2018-03-01

Temporal information plays a crucial role in medicine. Patients' clinical records are intrinsically temporal. Thus, in Medical Informatics there is an increasing need to store, support and query temporal data (particularly in relational databases), in order, for instance, to supplement decision-support systems. In this paper, we show that current approaches to relational data have remarkable limitations in the treatment of "now-relative" data (i.e., data holding true at the current time). This can severely compromise their applicability in general, and specifically in the medical context, where "now-relative" data are essential to assess the current status of the patients. We propose a theoretically grounded and application-independent relational approach to cope with now-relative data (which can be paired, e.g., with different decision support systems) overcoming such limitations. We propose a new temporal relational representation, which is the first relational model coping with the temporal indeterminacy intrinsic in now-relative data. We also propose new temporal algebraic operators to query them, supporting the distinction between possible and necessary time, and Allen's temporal relations between data. We exemplify the impact of our approach, and study the theoretical and computational properties of the new representation and algebra. Copyright © 2018 Elsevier B.V. All rights reserved.

Thermodynamic study of phase equilibria in petroleum separation plants; Estudo termodinamico do equilibrio de fases em plantas de separacao de petroleo

Energy Technology Data Exchange (ETDEWEB)

Silva, Ciro Rodolfo Santos; Duarte, Lindemberg de Jesus Nogueira [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil); Santos, Luiz Carlos Lobato [Universidade Federal da Bahia (UFBA), BA (Brazil)

2012-07-01

Through a thermodynamic approach of liquid-vapor separation it is possible to provide for a given load, of known composition and given temperature and pressure conditions, which are the volumes and the compositions of liquid and vapor phases in equilibrium. In this sense, the aim of this work is to analyze the separation conditions of the fluids produced in the well 1-FMO-001-BA, belonging to the Field School Project (ANP / UFBA), through a thermodynamic approach of phase equilibrium. This Well is characterized by being in an advanced stage of exploration with low oil and high gas production. Initially, the overall composition of the gas produced from the 1-FMO-001-BA was quantified by gas chromatography and its composition was similar to a typical natural gas found in the Reconcavo's basin. Then, the equilibrium constants were determined by Wilson empirical correlation, which could enable the determination of the dead oil composition. This oil showed low concentration of light hydrocarbons (e.g., methane, etc.) and moderate concentrations of heavy components (e.g., C{sub 10} {sub +}). Moreover, the original composition of the fluid that reaches the separator vessel had a similar chemical composition to the outlet gaseous stream of the separator vessel, proving that the Fazenda Mamoeiro's reservoir is classified as a gas reservoir. Finally, it was determined the relative density of the gas ({gamma} g = 0.8264), the specific gravity of the dead oil ({gamma} {sub o} = 0.7542), the API gravity (56.13) and gas-oil ratio (GOR 950.98 m{sup 3}std / m{sup 3}std), which are consistent with the data provided by PETROBRAS. (author)

Relational databases

CERN Document Server

Bell, D A

1986-01-01

Relational Databases explores the major advances in relational databases and provides a balanced analysis of the state of the art in relational databases. Topics covered include capture and analysis of data placement requirements; distributed relational database systems; data dependency manipulation in database schemata; and relational database support for computer graphics and computer aided design. This book is divided into three sections and begins with an overview of the theory and practice of distributed systems, using the example of INGRES from Relational Technology as illustration. The

Signatures of non-adiabatic dynamics in the fine-structure state distributions of the OH(X~/A~) products in the B-band photodissociation of H2O

International Nuclear Information System (INIS)

Zhou, Linsen; Xie, Daiqian; Guo, Hua

2015-01-01

A detailed quantum mechanical characterization of the photodissociation dynamics of H 2 O at 121.6 nm is presented. The calculations were performed using a full-dimensional wave packet method on coupled potential energy surfaces of all relevant electronic states. Our state-to-state model permits a detailed analysis of the OH(X ~ /A ~ ) product fine-structure populations as a probe of the non-adiabatic dissociation dynamics. The calculated rotational state distributions of the two Λ-doublet levels of OH(X ~ , v = 0) exhibit very different characteristics. The A′ states, produced mostly via the B ~ →X ~ conical intersection pathway, have significantly higher populations than the A″ counterparts, which are primarily from the B ~ →A ~ Renner-Teller pathway. The former features a highly inverted and oscillatory rotational state distribution, while the latter has a smooth distribution with much less rotational excitation. In good agreement with experiment, the calculated total OH(X ~ ) rotational state distribution and anisotropy parameters show clear even-odd oscillations, which can be attributed to a quantum mechanical interference between waves emanating from the HOH and HHO conical intersections in the B ~ →X ~ non-adiabatic pathway. On the other hand, the experiment-theory agreement for the OH(A ~ ) fragment is also satisfactory, although some small quantitative differences suggest remaining imperfections of the ab initio based potential energy surfaces

Signatures of non-adiabatic dynamics in the fine-structure state distributions of the OH(X̃/Ã) products in the B-band photodissociation of H2O.

Science.gov (United States)

Zhou, Linsen; Xie, Daiqian; Guo, Hua

2015-03-28

A detailed quantum mechanical characterization of the photodissociation dynamics of H2O at 121.6 nm is presented. The calculations were performed using a full-dimensional wave packet method on coupled potential energy surfaces of all relevant electronic states. Our state-to-state model permits a detailed analysis of the OH(X̃/Ã) product fine-structure populations as a probe of the non-adiabatic dissociation dynamics. The calculated rotational state distributions of the two Λ-doublet levels of OH(X̃, v = 0) exhibit very different characteristics. The A' states, produced mostly via the B̃→X̃ conical intersection pathway, have significantly higher populations than the A″ counterparts, which are primarily from the B̃→Ã Renner-Teller pathway. The former features a highly inverted and oscillatory rotational state distribution, while the latter has a smooth distribution with much less rotational excitation. In good agreement with experiment, the calculated total OH(X̃) rotational state distribution and anisotropy parameters show clear even-odd oscillations, which can be attributed to a quantum mechanical interference between waves emanating from the HOH and HHO conical intersections in the B̃→X̃ non-adiabatic pathway. On the other hand, the experiment-theory agreement for the OH(Ã) fragment is also satisfactory, although some small quantitative differences suggest remaining imperfections of the ab initio based potential energy surfaces.

Social relations

DEFF Research Database (Denmark)

Due, P; Holstein, B; Lund, R

1999-01-01

We introduce a conceptual framework with social relations as the main concept and the structure and the function of social relations as subconcepts. The structure of social relations covers aspects of formal relations and social network. The function of social relations covers social support......, social anchorage and relational strain. We use this conceptual framework to describe social relations in the Danish population, with questionnaire data from the Danish Longitudinal Health Behaviour Study including a random sample of each of the age groups 25-, 50-, 60-and 70-year olds, N = 2......,011. The postal questionnaires were answered by a random sample in each of the age groups. The results show marked age and gender differences in both the structure and the function of social relations. The social network, measured as weekly contacts, weakens with age and so does instrumental support. Emotional...

A logic road from special relativity to general relativity

OpenAIRE

Andréka, Hajnal; Madarász, Judit X.; Németi, István; Székely, Gergely

2010-01-01

We present a streamlined axiom system of special relativity in first-order logic. From this axiom system we "derive" an axiom system of general relativity in two natural steps. We will also see how the axioms of special relativity transform into those of general relativity. This way we hope to make general relativity more accessible for the non-specialist.

Relation between visual function index and falls-related factors in patients with age-related cataract

Directory of Open Access Journals (Sweden)

Mei-Na Huang

2016-01-01

Full Text Available AIM:To investigate the relation between vision function index and falls-related factors in patients with age-related cataract.METHODS:Ninety-six patients with age-related cataract were interviewed using a seven-item visual function questionnaire(VF-7, then classified into poor, moderate, or good visual function group. The differences of the three groups on visual acuity, balance and mobility function, cognition, depressive symptoms, self-reported fear of falling were analyzed. RESULTS:The patients in poor visual function group had older age, tendency to depression, was more afraid of falling, compared with groups with higher score in VF-7, and they had worse visual acuity, performed worse on all balance and mobility tests. CONCLUSION:Poor visual function is related to worse visual acuity, weaker balance and mobility performance in patients with age-related cataract. The VF-7, as a simple and convenient self-reported method, can be used as a falling risk monitoring in patients with age-related cataract.

Relating derived relations as a model of analogical reasoning: reaction times and event-related potentials.

Science.gov (United States)

Barnes-Holmes, Dermot; Regan, Donal; Barnes-Holmes, Yvonne; Commins, Sean; Walsh, Derek; Stewart, Ian; Smeets, Paul M; Whelan, Robert; Dymond, Simon

2005-11-01

The current study aimed to test a Relational Frame Theory (RFT) model of analogical reasoning based on the relating of derived same and derived difference relations. Experiment 1 recorded reaction time measures of similar-similar (e.g., "apple is to orange as dog is to cat") versus different-different (e.g., "he is to his brother as chalk is to cheese") derived relational responding, in both speed-contingent and speed-noncontingent conditions. Experiment 2 examined the event-related potentials (ERPs) associated with these two response patterns. Both experiments showed similar-similar responding to be significantly faster than different-different responding. Experiment 2 revealed significant differences between the waveforms of the two response patterns in the left-hemispheric prefrontal regions; different-different waveforms were significantly more negative than similar-similar waveforms. The behavioral and neurophysiological data support the RFT prediction that, all things being equal, similar-similar responding is relationally "simpler" than, and functionally distinct from, different-different analogical responding. The ERP data were fully consistent with findings in the neurocognitive literature on analogy. These findings strengthen the validity of the RFT model of analogical reasoning and supplement the behavior-analytic approach to analogy based on the relating of derived relations.

Special relativity

International Nuclear Information System (INIS)

Taylor, J.G.

1975-01-01

It is stated that the early chapters review special relativity from an elementary mathematical viewpoint, and include discussion of recent experiments which set out to test Einstein's predictions. The theory of relativity is then reformulated in more sophisticated mathematical language to show its relation to electro-magnetism, and to lay the foundation for more general viewpoints. The final chapter discusses in simple terms where activity in the field is currently centred, and where future interest lies. Chapter headings include: the constant speed of light; measuring time and distance; the Lorentz transformation (relativity of simultaneity, space-time and causality); relativistic kinematics (including - the Dopper effect); relativistic dynamics (including - nuclear binding energy, particle creation, electrodynamics); the structure of special relativity (including - the Lorentz group, the rotation group, elementary particle scattering); extensions of special relativity. (U.K.)

The special theory of relativity bound with relativity

CERN Document Server

Dingle, Herbert

2014-01-01

The Special Theory of Relativity:Based on a short course of lectures delivered in the late 1930s, this short book presents the theory of Special Relativity by formulating a redefinition of the measurement of length, and thus will appeal to students of physics who wish to think through Einstein's thought without the encumbrance of quasi-scientific concepts and language. Relativity: A Very Elementary Exposition:This brief lecture, delivered in October 1921 and published for the first time in 1925, offers an explanation of Einstein's theory of Special Relativity for the non-scientist, giving a ge

Dispersion relation and relative intensity for double-plasmon satellites

International Nuclear Information System (INIS)

Srivastava, K.S.; Shiv Singh; Harsh, O.K.

1981-01-01

An expression for the dispersion relation and the relative intensity of double-plasmon oscillations and satellites has been derived by extending the dispersion relation and the extended Bohm and Pines Hamiltonian to second order. The calculated value of the relative intensity of the double-plasmon satellite for Be agrees fairly well with the value observed experimentally by other workers. (orig.)

2-year patient-related versus stent-related outcomes

DEFF Research Database (Denmark)

Jensen, Lisette Okkels; Thayssen, Per; Christiansen, Evald Høj

2012-01-01

years were further assessed with specific focus on patient-related composite (all death, all MI, or any revascularization) and stent-related composite outcomes (cardiac death, target vessel MI, or symptom-driven target lesion revascularization). A total of 1,390 patients were assigned to receive the EES......, and 1,384 patients were assigned to receive the SES. RESULTS: At 2 years, the composite primary endpoint occurred in 8.3% in the EES group and in 8.7% in the SES group (hazard ratio [HR]: 0.94, 95% confidence interval [CI]: 0.73 to 1.22). The patient-related outcome: 15.0% in the EES group versus 15.......80). CONCLUSIONS: At 2-year follow-up, the EES was found to be noninferior to the SES with regard to both patient-related and stent-related clinical outcomes. (Scandinavian Organization for Randomized Trials With Clinical Outcome IV [SORT OUT IV]; NCT00552877)....

Relational Leadership

DEFF Research Database (Denmark)

Madsen, Charlotte Øland; Rasmussen, Jørgen Gulddahl

2015-01-01

In this chapter, we emphasise what we have outlined as interesting areas of relational leadership and present some ideas on how to facilitate a broader understanding of relational leadership practice. This involves the interpretations that create connections between practice and ontology. We...... elaborate on how leadership in everyday situations can be understood from a relational perspective. The chapter will focus on outlining and inspiring the reader to co-operate with other people to develop further relational understandings of leading....

Introduction to relation algebras relation algebras

CERN Document Server

Givant, Steven

2017-01-01

The first volume of a pair that charts relation algebras from novice to expert level, this text offers a comprehensive grounding for readers new to the topic. Upon completing this introduction, mathematics students may delve into areas of active research by progressing to the second volume, Advanced Topics in Relation Algebras; computer scientists, philosophers, and beyond will be equipped to apply these tools in their own field. The careful presentation establishes first the arithmetic of relation algebras, providing ample motivation and examples, then proceeds primarily on the basis of algebraic constructions: subalgebras, homomorphisms, quotient algebras, and direct products. Each chapter ends with a historical section and a substantial number of exercises. The only formal prerequisite is a background in abstract algebra and some mathematical maturity, though the reader will also benefit from familiarity with Boolean algebra and naïve set theory. The measured pace and outstanding clarity are particularly ...

Relating Derived Relations as a Model of Analogical Reasoning: Reaction Times and Event-Related Potentials

Science.gov (United States)

Barnes-Holmes, Dermot; Regan, Donal; Barnes-Holmes, Yvonne; Commins, Sean; Walsh, Derek; Stewart, Ian; Smeets, Paul M.; Whelan, Robert; Dymond, Simon

2005-01-01

The current study aimed to test a Relational Frame Theory (RFT) model of analogical reasoning based on the relating of derived same and derived difference relations. Experiment 1 recorded reaction time measures of similar-similar (e.g., "apple is to orange as dog is to cat") versus different-different (e.g., "he is to his brother as…

In a distinguishing spacetime the horismos relation generates the causal relation

International Nuclear Information System (INIS)

Minguzzi, E

2009-01-01

It is proved that in a distinguishing spacetime the horismos relation E + = J + /I + generates the causal relation J + . In other words two causally related events are joined by a chain of horismotically related events, or again, the causal relation is the smallest transitive relation containing the horismos relation. The result is sharp in the sense that the distinction cannot be weakened to future or past distinction. Finally, it is proved that a spacetime in which the horismos relation generates the causal relation is necessarily non-total imprisoning.

Numerical relativity

CERN Document Server

Shibata, Masaru

2016-01-01

This book is composed of two parts: First part describes basics in numerical relativity, that is, the formulations and methods for a solution of Einstein's equation and general relativistic matter field equations. This part will be helpful for beginners of numerical relativity who would like to understand the content of numerical relativity and its background. The second part focuses on the application of numerical relativity. A wide variety of scientific numerical results are introduced focusing in particular on the merger of binary neutron stars and black holes.

A Relational Algebra Query Language for Programming Relational Databases

Science.gov (United States)

McMaster, Kirby; Sambasivam, Samuel; Anderson, Nicole

2011-01-01

In this paper, we describe a Relational Algebra Query Language (RAQL) and Relational Algebra Query (RAQ) software product we have developed that allows database instructors to teach relational algebra through programming. Instead of defining query operations using mathematical notation (the approach commonly taken in database textbooks), students…

Comparison of relative and non-relative adoptive parent health status.

Science.gov (United States)

Foli, Karen J; Lim, Eunjung; Sands, Laura P

2015-03-01

Across the United States, kinship parents, extended family members and close friends, render care to the 2.7 million children who have been removed from their birth parents' care. However, differences between relative and non-relative parents reported health statuses have not been explored. The National Survey of Adoptive Parents data were used to investigate the health status of relative (n = 469) and non-relative (n = 1,599) adoptive parents. Perceived happiness in the parent-child relationship and the parents' ability to cope appear to affect parental health status. Only non-related mothers of children younger than 6 years reported better emotional health than those mothers who were related to their children. With this exception, and despite caring for children who have a greater likelihood of abuse, neglect, and exposure to drugs and alcohol prior to birth, the reported health statuses of relative parents did not differ from non-relative parents. © The Author(s) 2013.

Dynamics of a spherical particle in an acoustic field: A multiscale approach

International Nuclear Information System (INIS)

Xie, Jin-Han; Vanneste, Jacques

2014-01-01

A rigid spherical particle in an acoustic wave field oscillates at the wave period but has also a mean motion on a longer time scale. The dynamics of this mean motion is crucial for numerous applications of acoustic microfluidics, including particle manipulation and flow visualisation. It is controlled by four physical effects: acoustic (radiation) pressure, streaming, inertia, and viscous drag. In this paper, we carry out a systematic multiscale analysis of the problem in order to assess the relative importance of these effects depending on the parameters of the system that include wave amplitude, wavelength, sound speed, sphere radius, and viscosity. We identify two distinguished regimes characterised by a balance among three of the four effects, and we derive the equations that govern the mean particle motion in each regime. This recovers and organises classical results by King [“On the acoustic radiation pressure on spheres,” Proc. R. Soc. A 147, 212–240 (1934)], Gor'kov [“On the forces acting on a small particle in an acoustical field in an ideal fluid,” Sov. Phys. 6, 773–775 (1962)], and Doinikov [“Acoustic radiation pressure on a rigid sphere in a viscous fluid,” Proc. R. Soc. London A 447, 447–466 (1994)], clarifies the range of validity of these results, and reveals a new nonlinear dynamical regime. In this regime, the mean motion of the particle remains intimately coupled to that of the surrounding fluid, and while viscosity affects the fluid motion, it plays no part in the acoustic pressure. Simplified equations, valid when only two physical effects control the particle motion, are also derived. They are used to obtain sufficient conditions for the particle to behave as a passive tracer of the Lagrangian-mean fluid motion

Communities of the alliance Bidenti frondosae-Salicion triandrae Golub 2004 on the territory of the Lower Volga Valley

Directory of Open Access Journals (Sweden)

V. B. Golub

2010-01-01

Full Text Available Communities of the alliance Bidenti frondosae-Salicion triandrae Golub 2004 – is a shrub communities with dominant Salix triandra и Amorpha fruticosa along the watercourse banks and lakes in the Lower Volga valley. Diagnostis species of alliance: Fraxinus pennsylvanica, Bidens frondosa, Xanthium strumarium, Thalictrum flavum. The alliance is also diagnosed by the absence or non-significant presence of species number, characteristic of communities with dominant Salix triandra on more northern territories, which are supposed to refer to the alliance Salicion triandrae Th. Muller et Gors 1958. There are Salix fragilis, Salix viminalis, Urtica dioica, Galium palustre, Lythrum salicaria, Lysimachia vulgaris. One more peculiarity of communities of alliance Bidenti frondosae-Salicion triandrae should be noted. It lies in the fact that Salix triamdra in the Lower Volga is represented by lately flowering ecotype. Salix triamdra blooms here after the water abatement in June-Jule. It is 2-3 months later that in other river flood-plains characterized by Salix triamdra earlier flooding. Communities of the alliance including four accociations: Bidenti frondosae-Salicion triandrae, Leersio-Salicetum triandrae, Carici melanostachyаe-Amorphetum fruticosae, Rubo caesii-Amorphetumfruticosae, which have different stage of widespread in the territory of the Lower Volga.

Experimental determination of the dynamics of an acoustically levitated sphere

Energy Technology Data Exchange (ETDEWEB)

Pérez, Nicolás, E-mail: nico@fisica.edu.uy [Centro Universitario de Paysandú, Universidad de la República, Paysandú (Uruguay); Andrade, Marco A. B. [Institute of Physics, University of São Paulo, São Paulo (Brazil); Canetti, Rafael [Facultad de Ingeniería, Universidad de la República, Montevideo (Uruguay); Adamowski, Julio C. [Department of Mechatronics and Mechanical Systems Engineering, Escola Politécnica, University of São Paulo, São Paulo (Brazil)

2014-11-14

Levitation of solids and liquids by ultrasonic standing waves is a promising technique to manipulate materials without contact. When a small particle is introduced in certain areas of a standing wave field, the acoustic radiation force pushes the particle to the pressure node. This movement is followed by oscillations of the levitated particle. Aiming to investigate the particle oscillations in acoustic levitation, this paper presents the experimental and numerical characterization of the dynamic behavior of a levitated sphere. To obtain the experimental response, a small sphere is lifted by the acoustic radiation force. After the sphere lift, it presents a damped oscillatory behavior, which is recorded by a high speed camera. To model this behavior, a mass-spring-damper system is proposed. In this model, the acoustic radiation force that acts on the sphere is theoretically predicted by the Gor'kov theory and the viscous forces are modeled by two damping terms, one term proportional to the square of the velocity and another term proportional to the particle velocity. The proposed model was experimentally verified by using different values of sound pressure amplitude. The comparison between numerical and experimental results shows that the model can accurately describe the oscillatory behavior of the sphere in an acoustic levitator.

Experimental determination of the dynamics of an acoustically levitated sphere

International Nuclear Information System (INIS)

Pérez, Nicolás; Andrade, Marco A. B.; Canetti, Rafael; Adamowski, Julio C.

2014-01-01

Levitation of solids and liquids by ultrasonic standing waves is a promising technique to manipulate materials without contact. When a small particle is introduced in certain areas of a standing wave field, the acoustic radiation force pushes the particle to the pressure node. This movement is followed by oscillations of the levitated particle. Aiming to investigate the particle oscillations in acoustic levitation, this paper presents the experimental and numerical characterization of the dynamic behavior of a levitated sphere. To obtain the experimental response, a small sphere is lifted by the acoustic radiation force. After the sphere lift, it presents a damped oscillatory behavior, which is recorded by a high speed camera. To model this behavior, a mass-spring-damper system is proposed. In this model, the acoustic radiation force that acts on the sphere is theoretically predicted by the Gor'kov theory and the viscous forces are modeled by two damping terms, one term proportional to the square of the velocity and another term proportional to the particle velocity. The proposed model was experimentally verified by using different values of sound pressure amplitude. The comparison between numerical and experimental results shows that the model can accurately describe the oscillatory behavior of the sphere in an acoustic levitator

Synthesis of Pyridine and Spiropyridine Derivatives Derived from 2-aminoprop- 1-ene-1,1,3-tricarbonitrile Together with their c-Met Kinase and Antiproliferative Evaluations.

Science.gov (United States)

Mohareb, Rafat M; Abouzied, Amr S; Abbas, Nermeen S

2018-02-07

Among a wide range of pyridines, 3-cyanopyridines acquired a special attention due to their wide range of pharmacological activities especially the therapeutic activities. Many pharmacological drugs containing the pyridine nucleus were known in the market. The aim of this work was to synthesize target molecules not only possess anti-tumor activities but also kinase inhibitors. To achieve this goal, our strategy was to synthesize a series of 3-cyanopyridine derivatives using 2-aminoprop-1-ene-1,1,3-tricarbonitrile (1) as the key starting material for many heterocyclization reactions. Muticoponent reactions were adopted using compound 1 to get different pyridine derivatives that were capable for different heterocyclization reactions. Antiproliferative evaluations and c-Met kinase, Pim-1 kinse inhibitions were perform where some compounds gave high activities. Compounds that showed high antiprolifeative activity were tested gor c-Met-independent and the results showed that compounds 5c, 5e, 5f, 7c, 7f and 16d were more active than foretinib. The Pim-1 kinase inhibition activity of some selected compounds showed that compounds 5e and 16c were high potent to inhibit Pim-1 activity. Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.org.

Bidirectional relations between work-related stress, sleep quality and perseverative cognition.

Science.gov (United States)

Van Laethem, Michelle; Beckers, Debby G J; Kompier, Michiel A J; Kecklund, Göran; van den Bossche, Seth N J; Geurts, Sabine A E

2015-11-01

In this longitudinal two-wave study, bidirectional relations between work-related stress and sleep quality were examined. Moreover, it was investigated whether perseverative cognition is a potential underlying mechanism in this association, related to both work-related stress and sleep quality. A randomly selected sample of Dutch employees received an online survey in 2012 and 2013. Of all invited employees, 877 participated in both waves. Structural equation modeling was performed to analyze the data. We found evidence for reversed relations between work-related stress and sleep quality. Specifically, when controlling for perseverative cognition, work-related stress was not directly related to subsequent sleep quality, but low sleep quality was associated with an increase in work-related stress over time. Moreover, negative bidirectional associations over time were found between perseverative cognition and sleep quality, and positive bidirectional associations were found between work-related stress and perseverative cognition. Lastly, a mediation analysis showed that perseverative cognition fully mediated the relationship between work-related stress and sleep quality. The study findings suggest that perseverative cognition could be an important underlying mechanism in the association between work-related stress and sleep quality. The bidirectionality of the studied relationships could be an indication of a vicious cycle, in which work-related stress, perseverative cognition, and sleep quality mutually influence each other over time. Copyright © 2015 Elsevier Inc. All rights reserved.

Is there a map between Galilean relativity and special relativity?

OpenAIRE

Shariati, Ahmad; Jafari, N.

2014-01-01

Mandanici has provided a map which he claims to be a two way map between Galilean relativity and special relativity. We argue that this map is simply a curvilinear coordinate system on a subset of the two-dimensional Minkowski space-time, and is not a two way map between 1+1 dimensional Galilean relativity and 1+1 dimensional special relativity.

The relation between herbivore density and relative resource ...

African Journals Online (AJOL)

The relation between kudu density and the relative density of habitat patches in each landscape was significant, with exponential models producing more significant statistics than linear models. Regressions of resource density against animal density are useful to understand 'carrying capacity' for wild herbivores, and ...

Special relativity

International Nuclear Information System (INIS)

French, A.P.

1982-01-01

This book is an introduction to special relativity theory. After a discussion of the limits of Newton's mechanics and the pecularities in the propagation of light the Lorentz transformation is introduced. Then the measurement of space and time intervals in the framework of relativity theory is considered. Thereafter the addition of velocities and acceleration are considered in this framework. Then relativistic kinematics of particle interactions are described. Then the four-dimensional calculus in space-time coordinates is introduced. Finally an introduction is given to the treatment of the electromagnetic field in the framework of relativity theory. Every chapter contains exercise problems with solutions. This book is suited for all students who want to get some fundamental knowledge about relativity theory. (HSI) [de

Priming performance-related concerns induces task-related mind-wandering.

Science.gov (United States)

Jordano, Megan L; Touron, Dayna R

2017-10-01

Two experiments tested the hypothesis that priming of performance-related concerns would (1) increase the frequency of task-related mind-wandering (i.e., task-related interference; TRI) and (2) decrease task performance. In each experiment, sixty female participants completed an operation span task (OSPAN) containing thought content probes. The task was framed as a math task for those in a condition primed for math-related stereotype threat and as a memory task for those in a control condition. In both studies, women whose performance-related concerns were primed via stereotype threat reported more TRI than women in the control. The second experiment used a more challenging OSPAN task and stereotype primed women also had lower math accuracy than controls. These results support the "control failures×current concerns" framework of mind-wandering, which posits that the degree to which the environmental context triggers personal concerns influences both mind-wandering frequency and content. Copyright © 2017 Elsevier Inc. All rights reserved.

International Relations

OpenAIRE

McGlinchey, S.

2017-01-01

A ‘Day 0’ introduction to International Relations for beginners. Written by a range of emerging and established experts, the chapters offer a broad sweep of the basic components of International Relations and the key contemporary issues that concern the discipline. The narrative arc forms a complete circle, taking readers from no knowledge to competency. The journey starts by examining how the international system was formed and ends by reflecting that International Relations is always adapti...

Relationalism or why diplomats find international relations theory strange

DEFF Research Database (Denmark)

Adler-Nissen, Rebecca

2015-01-01

In this conclusion, which reflects critically on the relational approach to diplomacy and its wider consequences, I argue that diplomats are estranged from IR theory and vice versa - because International Relations scholars generally subscribe to substantialism, whereas diplomats tend to think...... by diplomatic scholars). Relationalism takes as its point of departure the idea that social phenomena making up world politics always develop in relation to other social phenomena. Thus, for example, states are not born into' this world as fully developed states that then "exist"; states are made in continuous...... scholarship and diplomatic knowledge and practice are important for how we understand (and construct) world politics, including war, international cooperation, and responses to human and natural catastrophes....

Bidirectional relations between work-related stress, sleep quality and perseverative cognition

NARCIS (Netherlands)

Laethem, M. van; Beckers, D.G.J.; Kompier, M.A.J.; Kecklund, L.G.; Bossche, S.N.J. van den; Geurts, S.A.E.

2015-01-01

Objective In this longitudinal two-wave study, bidirectional relations between work-related stress and sleep quality were examined. Moreover, it was investigated whether perseverative cognition is a potential underlying mechanism in this association, related to both work-related stress and sleep

Signatures of non-adiabatic dynamics in the fine-structure state distributions of the OH(X{sup ~}/A{sup ~}) products in the B-band photodissociation of H{sub 2}O

Energy Technology Data Exchange (ETDEWEB)

Zhou, Linsen [Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Institute of Theoretical and Computational Chemistry, Nanjing University, Nanjing 210093 (China); Xie, Daiqian, E-mail: dqxie@nju.edu.cn, E-mail: hguo@unm.edu [Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Institute of Theoretical and Computational Chemistry, Nanjing University, Nanjing 210093 (China); Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); Guo, Hua, E-mail: dqxie@nju.edu.cn, E-mail: hguo@unm.edu [Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131 (United States)

2015-03-28

A detailed quantum mechanical characterization of the photodissociation dynamics of H{sub 2}O at 121.6 nm is presented. The calculations were performed using a full-dimensional wave packet method on coupled potential energy surfaces of all relevant electronic states. Our state-to-state model permits a detailed analysis of the OH(X{sup ~}/A{sup ~}) product fine-structure populations as a probe of the non-adiabatic dissociation dynamics. The calculated rotational state distributions of the two Λ-doublet levels of OH(X{sup ~}, v = 0) exhibit very different characteristics. The A′ states, produced mostly via the B{sup ~}→X{sup ~} conical intersection pathway, have significantly higher populations than the A″ counterparts, which are primarily from the B{sup ~}→A{sup ~} Renner-Teller pathway. The former features a highly inverted and oscillatory rotational state distribution, while the latter has a smooth distribution with much less rotational excitation. In good agreement with experiment, the calculated total OH(X{sup ~}) rotational state distribution and anisotropy parameters show clear even-odd oscillations, which can be attributed to a quantum mechanical interference between waves emanating from the HOH and HHO conical intersections in the B{sup ~}→X{sup ~} non-adiabatic pathway. On the other hand, the experiment-theory agreement for the OH(A{sup ~}) fragment is also satisfactory, although some small quantitative differences suggest remaining imperfections of the ab initio based potential energy surfaces.

Signatures of non-adiabatic dynamics in the fine-structure state distributions of the OH( X ˜ / A ˜ ) products in the B-band photodissociation of H2O

Science.gov (United States)

Zhou, Linsen; Xie, Daiqian; Guo, Hua

2015-03-01

A detailed quantum mechanical characterization of the photodissociation dynamics of H2O at 121.6 nm is presented. The calculations were performed using a full-dimensional wave packet method on coupled potential energy surfaces of all relevant electronic states. Our state-to-state model permits a detailed analysis of the OH( X ˜ / A ˜ ) product fine-structure populations as a probe of the non-adiabatic dissociation dynamics. The calculated rotational state distributions of the two Λ-doublet levels of OH( X ˜ , v = 0) exhibit very different characteristics. The A' states, produced mostly via the B ˜ → X ˜ conical intersection pathway, have significantly higher populations than the A″ counterparts, which are primarily from the B ˜ → A ˜ Renner-Teller pathway. The former features a highly inverted and oscillatory rotational state distribution, while the latter has a smooth distribution with much less rotational excitation. In good agreement with experiment, the calculated total OH( X ˜ ) rotational state distribution and anisotropy parameters show clear even-odd oscillations, which can be attributed to a quantum mechanical interference between waves emanating from the HOH and HHO conical intersections in the B ˜ → X ˜ non-adiabatic pathway. On the other hand, the experiment-theory agreement for the OH( A ˜ ) fragment is also satisfactory, although some small quantitative differences suggest remaining imperfections of the ab initio based potential energy surfaces.

Twentieth workshop on geothermal reservoir engineering: Proceedings

Energy Technology Data Exchange (ETDEWEB)

None

1995-01-26

PREFACE The Twentieth Workshop on Geothermal Reservoir Engineering, dedicated to the memory of Professor Hank Ramey, was held at Stanford University on January 24-26, 1995. There were ninety-five registered participants. Participants came from six foreign countries: Japan, Mexico, England, Italy, New Zealand and Iceland. The performance of many geothermal reservoirs outside the United States was described in several of the papers. Professor Roland N. Horne opened the meeting and welcomed visitors to the campus. The key note speaker was Marshall Reed, who gave a brief overview of the Department of Energy's current plan. Thirty-two papers were presented in the technical sessions of the workshop. Technical papers were organized into eleven sessions concerning: field development, modeling, well tesubore, injection, geoscience, geochemistry and field operations. Session chairmen were major contributors to the workshop, and we thank: Ben Barker, Bob Fournier, Mark Walters, John Counsil, Marcelo Lippmann, Keshav Goyal, Joel Renner and Mike Shook. In addition to the technical sessions, a panel discussion was held on ''What have we learned in 20 years?'' Panel speakers included Patrick Muffler, George Frye, Alfred Truesdell and John Pritchett. The subject was further discussed by Subir Sanyal, who gave the post-dinner speech at the banquet. The Workshop was organized by the Stanford Geothermal Program faculty, staff, and graduate students. We wish to thank our students who operated the audiovisual equipment. Shaun D. Fitzgerald Program Manager

Frequency-modulation transient absorption spectrum of the HCCl A 1A double-prime(0,0,0)left-arrow X 1A'(0,0,0) transition

International Nuclear Information System (INIS)

Chang, B.; Sears, T.J.

1995-01-01

The rotationally resolved spectrum of the HCCl A 1 A double-prime(0,0,0)left-arrow X 1 A'(0,0,0) transition between 12 230 and 12 410 cm -1 was obtained for the first time at Doppler-limited resolution using a frequency-modulation (FM) transient absorption technique. Five major subbands (K a =0 left-arrow 1, 1 left-arrow 0, 1 left-arrow 2, 2 left-arrow 1, and 2 left-arrow 3) of HC 35 Cl and one subband (K a =0 left-arrow 1) of HC 37 Cl were observed and assigned. In addition, the forbidden subband (K a =0 left-arrow 0) of HC 35 Cl was also observed. Thus far, we have assigned most (more than 70%) of the strong lines. The analysis of these subbands determines the geometry for the HCCl A(0,0,0) level: angle HCCl=134.7 degree and R C-Cl =1.623 A while R C-H is fixed at the corresponding value of CH 2 . The height of the barrier to linearity was found to be approximately 2170 cm -1 above the vibrationless level of the A state. The rotational structure of this spectrum shows irregular perturbations. Both random and J-dependent (anomalous K-type doubling) effects were observed. As in methylene, the perturbations most likely arise from Renner--Teller effect between the two singlet states in combination with spin--orbit coupling between the singlet and triplet states

Relativity

CERN Document Server

Einstein, Albert

2013-01-01

Time magazine's ""Man of the Century"", Albert Einstein is the founder of modern physics and his theory of relativity is the most important scientific idea of the modern era. In this short book, Einstein explains, using the minimum of mathematical terms, the basic ideas and principles of the theory that has shaped the world we live in today. Unsurpassed by any subsequent books on relativity, this remains the most popular and useful exposition of Einstein's immense contribution to human knowledge.With a new foreword by Derek Raine.

Class dependency of fuzzy relational database using relational calculus and conditional probability

Science.gov (United States)

Deni Akbar, Mohammad; Mizoguchi, Yoshihiro; Adiwijaya

2018-03-01

In this paper, we propose a design of fuzzy relational database to deal with a conditional probability relation using fuzzy relational calculus. In the previous, there are several researches about equivalence class in fuzzy database using similarity or approximate relation. It is an interesting topic to investigate the fuzzy dependency using equivalence classes. Our goal is to introduce a formulation of a fuzzy relational database model using the relational calculus on the category of fuzzy relations. We also introduce general formulas of the relational calculus for the notion of database operations such as ’projection’, ’selection’, ’injection’ and ’natural join’. Using the fuzzy relational calculus and conditional probabilities, we introduce notions of equivalence class, redundant, and dependency in the theory fuzzy relational database.

Special relativity, electrodynamics, and general relativity from Newton to Einstein

CERN Document Server

Kogut, John B

2018-01-01

Special Relativity, Electrodynamics and General Relativity: From Newton to Einstein, Second Edition, is intended to teach (astro)physics, astronomy, and cosmology students how to think about special and general relativity in a fundamental, but accessible, way. Designed to render any reader a "master of relativity," everything on the subject is comprehensible and derivable from first principles. The book emphasizes problem solving, contains abundant problem sets, and is conveniently organized to meet the needs of both student and instructor. Fully revised, updated and expanded second edition Includes new chapters on magnetism as a consequence of relativity and electromagnetism Contains many improved and more engaging figures Uses less algebra resulting in more efficient derivations Enlarged discussion of dynamics and the relativistic version of Newton's second law

SİGORTA SEKTÖRÜNDE RİGOR MORTİS (ÖLÜM KATILIĞI) ve DEĞİŞİM FAALİYETLERİNİN ANALİZİ

OpenAIRE

URALCAN, Güler

2014-01-01

Sigorta sektörü ekonomi içindeki önemine rağmen, ülkemizde gereken ilgiyi yüzlerce yıl bulamamıştır. Onlarca yıldan beri uluslar arası karşılaştırmaların yapıldığı ekonomik göstergelerin tümünde, Türk sigorta sektörü dünya ülkeleri içinde en son birkaç ülke arasında yer almıştır. 21. yüzyılın başına dek yaşanan gelişmelere bakıldığında sektörde sigortacılık işlemlerinin yürütülebildiği ancak üretimin yeterince artırılamadığı, yeterli mali gücün sağlanamadığı, dolayısıyla sigortacılığın sosyo-...

Mindfulness mediates the relation between disordered eating-related cognitions and psychological distress.

Science.gov (United States)

Masuda, Akihiko; Wendell, Johanna W

2010-12-01

The present study investigated whether mindfulness mediates the relation between disordered eating-related cognitions and negative psychological outcomes within a non-clinical college sample. Disordered eating-related cognitions were positively associated with general psychological ill-health and emotional distress in interpersonal contexts and inversely related to mindfulness. Mindfulness, which was also inversely related to general psychological ill-health and emotional distress, was found to partially mediate the relations between disordered eating-related cognitions and the two predicted variables. Copyright © 2010 Elsevier Ltd. All rights reserved.

The principle of relativity and the indeterminacy of special relativity

Science.gov (United States)

de Abreu, Rodrigo; Guerra, Vasco

2008-01-01

This work ends a trilogy devoted to a journey into the foundations of special relativity. The first paper debated the meaning of the constancy of the two-way speed of light and its close relation to the conceptualization of time. The second one addressed the question of the possible constancy of the one-way speed of light and the trivial—but, unfortunately, even now somewhat controversial—question of the compatibility between the assumption of a special system of reference and Einstein's special relativity. The present study deals with the principle of relativity. Its historical evolution is reviewed and a 'weak' formulation is defended. It is emphasized that many assertions usually associated with special relativity, such as the 'relativity of time dilation' and 'relativity of space contraction' are indeed philosophical statements, as it has been established already by several authors in the past. Nonetheless, most teachers and scientists still believe nowadays they are implied by the theory and by the group property of the Lorentz transformation. This is by no means so, as it is reviewed and elucidated with the simple example on space contraction. It is argued that the lack of knowledge of the true value of the one-way speed of light in empty space leaves the theory undetermined. Einstein's special relativity corresponds to a simple and very elegant solution to this problem, allowing the study of relative motion without any concern with the study of absolute motion, which is considered to be superfluous. However, its standard interpretation is minimalist and even misleading. A large number of researchers have discussed this question, mostly within the conventionality of simultaneity thesis. The typical formulation of this thesis provides some new physical insight and points out the problem, but does not solve it. In contrast, it often leads to a labyrinth of difficult language which is herein clarified.

The principle of relativity and the indeterminacy of special relativity

International Nuclear Information System (INIS)

Abreu, Rodrigo de; Guerra, Vasco

2008-01-01

This work ends a trilogy devoted to a journey into the foundations of special relativity. The first paper debated the meaning of the constancy of the two-way speed of light and its close relation to the conceptualization of time. The second one addressed the question of the possible constancy of the one-way speed of light and the trivial-but, unfortunately, even now somewhat controversial-question of the compatibility between the assumption of a special system of reference and Einstein's special relativity. The present study deals with the principle of relativity. Its historical evolution is reviewed and a 'weak' formulation is defended. It is emphasized that many assertions usually associated with special relativity, such as the 'relativity of time dilation' and 'relativity of space contraction' are indeed philosophical statements, as it has been established already by several authors in the past. Nonetheless, most teachers and scientists still believe nowadays they are implied by the theory and by the group property of the Lorentz transformation. This is by no means so, as it is reviewed and elucidated with the simple example on space contraction. It is argued that the lack of knowledge of the true value of the one-way speed of light in empty space leaves the theory undetermined. Einstein's special relativity corresponds to a simple and very elegant solution to this problem, allowing the study of relative motion without any concern with the study of absolute motion, which is considered to be superfluous. However, its standard interpretation is minimalist and even misleading. A large number of researchers have discussed this question, mostly within the conventionality of simultaneity thesis. The typical formulation of this thesis provides some new physical insight and points out the problem, but does not solve it. In contrast, it often leads to a labyrinth of difficult language which is herein clarified

Hospital-physician relations: the relative importance of economic, relational and professional attributes to organizational attractiveness

Science.gov (United States)

2014-01-01

Background Belgian hospitals face a growing shortage of physicians and increasingly competitive market conditions. In this challenging environment hospitals are struggling to build effective hospital-physician relationships which are considered to be a critical determinant of organizational success. Methods Employed physicians of a University hospital were surveyed. Organizational attributes were identified through the literature and two focus groups. Variables were measured using validated questionnaires. Descriptive analyses and linear regression were used to test the model and relative importance analyses were performed. Results The selected attributes predict hospital attractiveness significantly (79.3%). The relative importance analysis revealed that hospital attractiveness is most strongly predicted by professional attributes (35.3%) and relational attributes (29.7%). In particular, professional development opportunities (18.8%), hospital prestige (16.5%), organizational support (17.2%) and leader support (9.3%) were found to be most important. Besides these non-economic aspects, the employed physicians indicated pay and financial benefits (7.4%) as a significant predictor of hospital attractiveness. Work-life balance and job security were not significantly related to hospital attractiveness. Conclusions This study shows that initiatives aimed at strengthening physicians’ positive perceptions of professional and relational aspects of practicing medicine in hospitals, while assuring satisfactory financial conditions, may offer useful avenues for increasing the level of perceived hospital attractiveness. Overall, hospitals are advised to use a differentiated approach to increase their attractiveness to physicians. PMID:24884491

Hospital-physician relations: the relative importance of economic, relational and professional attributes to organizational attractiveness.

Science.gov (United States)

Trybou, Jeroen; Gemmel, Paul; Van Vaerenbergh, Yves; Annemans, Lieven

2014-05-21

Belgian hospitals face a growing shortage of physicians and increasingly competitive market conditions. In this challenging environment hospitals are struggling to build effective hospital-physician relationships which are considered to be a critical determinant of organizational success. Employed physicians of a University hospital were surveyed. Organizational attributes were identified through the literature and two focus groups. Variables were measured using validated questionnaires. Descriptive analyses and linear regression were used to test the model and relative importance analyses were performed. The selected attributes predict hospital attractiveness significantly (79.3%). The relative importance analysis revealed that hospital attractiveness is most strongly predicted by professional attributes (35.3%) and relational attributes (29.7%). In particular, professional development opportunities (18.8%), hospital prestige (16.5%), organizational support (17.2%) and leader support (9.3%) were found to be most important. Besides these non-economic aspects, the employed physicians indicated pay and financial benefits (7.4%) as a significant predictor of hospital attractiveness. Work-life balance and job security were not significantly related to hospital attractiveness. This study shows that initiatives aimed at strengthening physicians' positive perceptions of professional and relational aspects of practicing medicine in hospitals, while assuring satisfactory financial conditions, may offer useful avenues for increasing the level of perceived hospital attractiveness. Overall, hospitals are advised to use a differentiated approach to increase their attractiveness to physicians.

NgsRelate

DEFF Research Database (Denmark)

Korneliussen, Thorfinn Sand; Moltke, Ida

2015-01-01

. Using both simulated and real data, we show that NgsRelate provides markedly better estimates for low-depth NGS data than two state-of-the-art genotype-based methods. AVAILABILITY: NgsRelate is implemented in C++ and is available under the GNU license at www.pop gen.dk/software. CONTACT: ida...... be called with high certainty. RESULTS: We present a software tool, NgsRelate, for estimating pairwise relatedness from NGS data. It provides maximum likelihood estimates that are based on genotype likelihoods instead of genotypes and thereby takes the inherent uncertainty of the genotypes into account...

General relativity

International Nuclear Information System (INIS)

Kenyon, I.R.

1990-01-01

General relativity is discussed in this book at a level appropriate to undergraduate students of physics and astronomy. It describes concepts and experimental results, and provides a succinct account of the formalism. A brief review of special relativity is followed by a discussion of the equivalence principle and its implications. Other topics covered include the concepts of curvature and the Schwarzschild metric, test of the general theory, black holes and their properties, gravitational radiation and methods for its detection, the impact of general relativity on cosmology, and the continuing search for a quantum theory of gravity. (author)

Linguistic relativity.

Science.gov (United States)

Wolff, Phillip; Holmes, Kevin J

2011-05-01

The central question in research on linguistic relativity, or the Whorfian hypothesis, is whether people who speak different languages think differently. The recent resurgence of research on this question can be attributed, in part, to new insights about the ways in which language might impact thought. We identify seven categories of hypotheses about the possible effects of language on thought across a wide range of domains, including motion, color, spatial relations, number, and false belief understanding. While we do not find support for the idea that language determines the basic categories of thought or that it overwrites preexisting conceptual distinctions, we do find support for the proposal that language can make some distinctions difficult to avoid, as well as for the proposal that language can augment certain types of thinking. Further, we highlight recent evidence suggesting that language may induce a relatively schematic mode of thinking. Although the literature on linguistic relativity remains contentious, there is growing support for the view that language has a profound effect on thought. WIREs Cogni Sci 2011 2 253-265 DOI: 10.1002/wcs.104 For further resources related to this article, please visit the WIREs website. Copyright © 2010 John Wiley & Sons, Ltd.

General Relativity

CERN Document Server

Straumann, Norbert

2013-01-01

This book provides a completely revised and expanded version of the previous classic edition ‘General Relativity and Relativistic Astrophysics’. In Part I the foundations of general relativity are thoroughly developed, while Part II is devoted to tests of general relativity and many of its applications. Binary pulsars – our best laboratories for general relativity – are studied in considerable detail. An introduction to gravitational lensing theory is included as well, so as to make the current literature on the subject accessible to readers. Considerable attention is devoted to the study of compact objects, especially to black holes. This includes a detailed derivation of the Kerr solution, Israel’s proof of his uniqueness theorem, and a derivation of the basic laws of black hole physics. Part II ends with Witten’s proof of the positive energy theorem, which is presented in detail, together with the required tools on spin structures and spinor analysis. In Part III, all of the differential geomet...

Dynamics of relative motion of test particles in general relativity

International Nuclear Information System (INIS)

Bazanski, S.L.

1977-01-01

Several variational principles which lead to the first and the second geodesic deviation equations, recently formulated by the author and used for the description of the relative motion of test particles in general relativity are presented. Relations between these principles are investigated and exhibited. The Hamilton-Jacobi equation is also studied for these generalized deviations and the conservation laws appearing here are discussed

Macular xanthophylls, lipoprotein-related genes, and age-related macular degeneration.

Science.gov (United States)

Koo, Euna; Neuringer, Martha; SanGiovanni, John Paul

2014-07-01

Plant-based macular xanthophylls (MXs; lutein and zeaxanthin) and the lutein metabolite meso-zeaxanthin are the major constituents of macular pigment, a compound concentrated in retinal areas that are responsible for fine-feature visual sensation. There is an unmet need to examine the genetics of factors influencing regulatory mechanisms and metabolic fates of these 3 MXs because they are linked to processes implicated in the pathogenesis of age-related macular degeneration (AMD). In this work we provide an overview of evidence supporting a molecular basis for AMD-MX associations as they may relate to DNA sequence variation in AMD- and lipoprotein-related genes. We recognize a number of emerging research opportunities, barriers, knowledge gaps, and tools offering promise for meaningful investigation and inference in the field. Overviews on AMD- and high-density lipoprotein (HDL)-related genes encoding receptors, transporters, and enzymes affecting or affected by MXs are followed with information on localization of products from these genes to retinal cell types manifesting AMD-related pathophysiology. Evidence on the relation of each gene or gene product with retinal MX response to nutrient intake is discussed. This information is followed by a review of results from mechanistic studies testing gene-disease relations. We then present findings on relations of AMD with DNA sequence variants in MX-associated genes. Our conclusion is that AMD-associated DNA variants that influence the actions and metabolic fates of HDL system constituents should be examined further for concomitant influence on MX absorption, retinal tissue responses to MX intake, and the capacity to modify MX-associated factors and processes implicated in AMD pathogenesis. © 2014 American Society for Nutrition.

Relativity without relativity

International Nuclear Information System (INIS)

Barbour, Julian; Foster, Brendan Z; Murchadha, Niall O

2002-01-01

We give a derivation of general relativity (GR) and the gauge principle that is novel in presupposing neither spacetime nor the relativity principle. We consider a class of actions defined on superspace (the space of Riemannian 3-geometries on a given bare manifold). It has two key properties. The first is symmetry under 3-diffeomorphisms. This is the only postulated symmetry, and it leads to a constraint linear in the canonical momenta. The second property is that the Lagrangian is constructed from a 'local' square root of an expression quadratic in the velocities. The square root is 'local' because it is taken before integration over 3-space. It gives rise to quadratic constraints that do not correspond to any symmetry and are not, in general, propagated by the Euler-Lagrange equations. Therefore these actions are internally inconsistent. However, one action of this form is well behaved: the Baierlein-Sharp-Wheeler (Baierlein R F, Sharp D and Wheeler J A 1962 Phys. Rev. 126 1864) reparametrization-invariant action for GR. From this viewpoint, spacetime symmetry is emergent. It appears as a 'hidden' symmetry in the (underdetermined) solutions of the Euler-Lagrange equations, without being manifestly coded into the action itself. In addition, propagation of the linear diffeomorphism constraint together with the quadratic square-root constraint acts as a striking selection mechanism beyond pure gravity. If a scalar field is included in the configuration space, it must have the same characteristic speed as gravity. Thus Einstein causality emerges. Finally, self-consistency requires that any 3-vector field must satisfy Einstein causality, the equivalence principle and, in addition, the Gauss constraint. Therefore we recover the standard (massless) Maxwell equations

Relativity simply explained

CERN Document Server

Gardner, Martin

2012-01-01

Since the publication of Einstein's Special Theory of Relativity in 1905, the discovery of such astronomical phenomena as quasars, pulsars, and black holes - all intimately connected to relativity - has provoked a tremendous upsurge of interest in the subject. This volume, a revised version of Martin Gardner's earlier Relativity for the Million, brings this fascinating topic up to date. Witty, perceptive, and easily accessible to the general reader, it is one of the clearest and most entertaining introductions to relativity ever written.

Relativity and cosmology

CERN Document Server

Kaufmann, William J

1973-01-01

The foundations of gravitational theory ; the birth of relativity theory ; the foundations of general relativity ; experimental tests of relativity ; the meaning of the redshift ; the black hole ; wormholes and white holes ; galaxies and quasars ; gravitational waves ; the shape of the Universe ; the creation of the Universe.

The principle of relativity and the special relativity triple

International Nuclear Information System (INIS)

Guo Hanying; Wu Hongtu; Zhou Bin

2009-01-01

Based on the principle of relativity and the postulate on universal invariant constants (c,l) as well as Einstein's isotropy conditions, three kinds of special relativity form a triple with a common Lorentz group as isotropy group under full Umov-Weyl-Fock-Lorentz transformations among inertial motions

Public relations

International Nuclear Information System (INIS)

1998-01-01

Public relations activities continued in a well-proved form of organizing plant visits and Information Centre off - site activities. Bohunice NPPs were visited by the number of 7294 visitors in 1997. A brief account of activities in public relations carried out by the Nuclear power plants Jaslovske Bohunice in 1997 is presented

The Impact of Political Relations Between Countries on Economic Relations

Directory of Open Access Journals (Sweden)

Hossein Askari

2012-09-01

Full Text Available In this paper, we assess the implications of changes in bilateral diplomatic relations with the United States for economic relations. We identify countries whose relations with the US changed during two historic and significant milestones in the past three decades, and a third group of countries after their leftist governments failed/collapsed in early 1990s. Using the Mann-Whitney U-test, we measure the significance of changes in economic relations. We chose the following set of economic indices to reflect economic relations: imports and exports to and from the US, capital outflows from the US to the country, economic and military assistance provided by the US, flow of students to the US, US arms export to the country, the country’s military expenditures, and believing in the importance of remittances and FDI and portfolio investment we use total figures as we did not have bilateral figures. Our results, though mixed, offer some interesting insights.

Über dieses Heft

Directory of Open Access Journals (Sweden)

Editors / Herausgeber

2013-12-01

ührte. Robert macht darauf aufmerksam, dass journalistische Texte nicht isoliert, sondern in der Regel als Teile von serialisierten Erzählungen begegnen, die zudem kulturspezifisch geprägt seien. Die serielle „Wulff“-Erzählung enthalte mehrere Narrative (Sünde-Strafe-Narrativ, demokratisches Narrativ, Pressefreiheits-Narrativ, Legitimitäts-Narrativ, die den Ereignissen exemplarischen Sinn verliehen. Mehrere Beiträge nehmen die Medialität journalistischen Erzählens in den Blick. Nora Berning untersucht mit Mark Bowdens Blackhawk Down einen journalistischen Hypertext. Auf der Grenze zwischen Faktum und Fiktion gelegen, sei Blackhawk Down ein Beispiel für das hybride, postmoderne Genre des literarischen Journalismus. Die besondere Gestaltung von narrativen Situationen, narrativer Zeit, Figurenräumen (character-spaces und narrativer Körper erzeuge im Leser „die ästhetische Erfahrung einer gemeinsamen ethischen und politischen Wirklichkeit“. Karl N. Renner führt zur präzisen Bestimmung der Funktion von Einzelfotos in den Wirklichkeitserzählungen des Print-Journalismus mehrere Unterscheidungen ein: ‚dokumentierende‘ vs. ‚illustrierende‘ Fotos sowie ‚metonymische‘ vs. ‚metaphorische‘ Foto-Text-Relationen. Metonymisch verwendete Fotos, so Renners Befund, seien typisch für ein additives journalistisches ‚Berichten‘, während Fotos mit metaphorischer Funktion eher für das ganzheitlich organisierte journalistische ‚Erzählen‘ charakteristisch seien. DIEGESIS führt in diesem Heft in der Kolumne „Interview“ ein neues Format ein: Künftig werden in jedem Heft international einflussreiche Narratologinnen und Narratologen nach ihren persönlichen Erfahrungen, Einschätzungen und Vorlieben befragt. In diesem Heft antwortet Brian Richardson.

Relative Risk Appraisal, the September 11 Attacks, and Terrorism-Related Fears

Science.gov (United States)

Marshall, Randall D.; Bryant, Richard A.; Amsel, Lawrence; Suh, Eun Jung; Cook, Joan M.; Neria, Yuval

2013-01-01

There are now replicated findings that posttraumatic stress disorder (PTSD) symptoms related to the September 11, 2001, attacks occurred in large numbers of persons who did not fit the traditional definition of exposure to a traumatic event. These data are not explained by traditional epidemiologic “bull’s eye” disaster models, which assume the psychological effects are narrowly, geographically circumscribed, or by existing models of PTSD onset. In this article, the authors develop a researchable model to explain these and other terrorism-related phenomena by synthesizing research and concepts from the cognitive science, risk appraisal, traumatic stress, and anxiety disorders literatures. They propose the new term relative risk appraisal to capture the psychological function that is the missing link between the event and subjective response in these and other terrorism-related studies to date. Relative risk appraisal highlights the core notion from cognitive science that human perception is an active, multidimensional process, such that for unpredictable societal threats, proximity to the event is only one of several factors that influence behavioral responses. Addressing distortions in relative risk appraisal effectively could reduce individual and societal vulnerability to a wide range of adverse economic and ethnopolitical consequences to terrorist attacks. The authors present ways in which these concepts and related techniques can be helpful in treating persons with September 11– or terrorism-related distress or psychopathology. PMID:17516775

Motion and relativity

CERN Document Server

Infeld, Leopold

1960-01-01

Motion and Relativity focuses on the methodologies, solutions, and approaches involved in the study of motion and relativity, including the general relativity theory, gravitation, and approximation.The publication first offers information on notation and gravitational interaction and the general theory of motion. Discussions focus on the notation of the general relativity theory, field values on the world-lines, general statement of the physical problem, Newton's theory of gravitation, and forms for the equation of motion of the second kind. The text then takes a look at the approximation meth

Hostile attribution biases for relationally provocative situations and event-related potentials.

Science.gov (United States)

Godleski, Stephanie A; Ostrov, Jamie M; Houston, Rebecca J; Schlienz, Nicolas J

2010-04-01

This exploratory study investigates how hostile attribution biases for relationally provocative situations may be related to neurocognitive processing using the P300 event-related potential. Participants were 112 (45 women) emerging adults enrolled in a large, public university in upstate New York. Participants completed self-report measures on relational aggression and hostile attribution biases and performed an auditory perseveration task to elicit the P300. It was found that hostile attribution biases for relational provocation situations was associated with a larger P300 amplitude above and beyond the role of hostile attribution biases for instrumental situations, relational aggression, and gender. Larger P300 amplitude is interpreted to reflect greater allocation of cognitive resources or enhanced "attending" to salient stimuli. Implications for methodological approaches to studying aggression and hostile attribution biases and for theory are discussed, as well as implications for the fields of developmental psychology and psychopathology. Copyright 2010 Elsevier B.V. All rights reserved.

Nothing but relativity

International Nuclear Information System (INIS)

Pal, Palash B

2003-01-01

We deduce the most general space-time transformation laws consistent with the principle of relativity. Thus, our result contains the results of both Galilean and Einsteinian relativity. The velocity addition law comes as a by-product of this analysis. We also argue why Galilean and Einsteinian versions are the only possible embodiments of the principle of relativity

Numerical Relativity

Science.gov (United States)

Baker, John G.

2009-01-01

Recent advances in numerical relativity have fueled an explosion of progress in understanding the predictions of Einstein's theory of gravity, General Relativity, for the strong field dynamics, the gravitational radiation wave forms, and consequently the state of the remnant produced from the merger of compact binary objects. I will review recent results from the field, focusing on mergers of two black holes.

Variations of relative humidity in relation to meningitis in Africa

Science.gov (United States)

Seefeldt, M. W.; Hopson, T. M.

2011-12-01

The meningitis belt is a region covering Sub-Saharan Africa from the Sahel of West Africa eastward to western Ethiopia. The region is prone to meningitis epidemics during the dry season extending from approximately January to May, depending on the region. Relative humidity has been found to be a critical environmental factor indicating the susceptibility of a region to meningitis epidemics. This study evaluates the variation of relative humidity across West Africa over 30 dry-seasons (1979 - 2009) using the NASA-MERRA dataset. The method of self-organizing maps is employed to characterize the changes in relative humidity patterns across the region within a given dry season as well as changes over the 30 years. A general pattern of changes in relative humidity is indicated as the rainbelt retreats to the south at the onset of the dry season and then returns to the region at the end of the dry season. Within each dry season there is a unique pattern. The climatological conditions of relative humidity at the onset of the dry season provide an indication of the moisture environment for the entire dry season. Year to year variation in the relative humidity patterns are found to be gradual. Future applications involve using the results from the SOM evaluation to be used for future decisions involving prevention of meningitis epidemics.

Journalism of Relation

DEFF Research Database (Denmark)

Blaagaard, Bolette

of cosmopolitanism from universal reproductions of sameness into creative productions of singular self-other relations based on the practiced and productive journalism. This is substantiated through case study analyses. The aim is to challenge the modern, rational journalistic subject referring back to the unified...... of the self-other relation which is simultaneously personal and political. Secondly, the dissertation relates the phenomenological ‘race’ and gender debates to the societal and productive context of contemporary European and ‘western’ globalised and mediated culture and politics. Journalism is re...... accountability and relation from journalistic training and practices whereby a ‘white’ and homogeneous social imaginary is reproduced. I make a call for thinking about journalism as relation – in terms of technological mediations, but also in terms of subjectivities. In order to allow for this, a shift is needed...

Relative expression of genes related with cold tolerance in ...

African Journals Online (AJOL)

Low temperature is one of the main abiotic stresses affecting rice yield in Chile. Alterations in phenology and physiology of the crop are observed after a cold event. The objective of this work was to study the relative expression of genes related with cold stress in Chilean cultivars of rice. For this, we analyzed the expression ...

What Are Related Disorders?

Science.gov (United States)

... The Marfan Foundation Marfan & Related Disorders What is Marfan Syndrome? What are Related Disorders? What are the Signs? ... Contact Us Donate Marfan & Related Disorders What is Marfan Syndrome? What are Related Disorders? What are the Signs? ...

Productivity loss at work; health-related and work-related factors.

Science.gov (United States)

van den Heuvel, Swenne G; Geuskens, Goedele A; Hooftman, Wendela E; Koppes, Lando L J; van den Bossche, Seth N J

2010-09-01

Productivity loss is an increasing problem in an aging working population that is decreasing in numbers. The aim of this study is to identify work-related and health-related characteristics associated with productivity loss, due to either sickness absence or reduced performance at work. In this cross-sectional study, data of the Netherlands Working Conditions Survey of 2007 were used, which includes a national representative sample of 22,759 employees aged 15 to 64 years. Demographic characteristics, health-related and work-related factors were assessed with a questionnaire. Logistic regression analyses were carried out to study the relationship of work-related and health-related factors with low performance at work and sickness absence in the past 12 months. Poor general health, the number of longstanding health conditions, and most types of longstanding health conditions were associated with productivity loss. Health-related factors were in general stronger associated with sickness absence than with low performance at work. Performance: poor health OR 1.54 CI 1.38-1.71, >1 health conditions OR 1.21 CI 1.09-1.35; sickness absence: poor health OR 2.62 CI 2.33-2.93, >1 health conditions OR 2.47 CI 2.21-2.75. Of the different types of longstanding health conditions, only psychological complaints and to a small extent musculoskeletal symptoms, were associated with low performance (respectively OR 1.54 CI 1.27-1.87; OR 1.09 CI 1.00-1.18). Low performance at work was less likely among employees with high physically demanding work (shift work OR 0.70 CI 0.63-0.76, using force OR 0.78 CI 0.72-0.84, and repetitive movements OR 0.74 CI 0.70-0.79). Psychosocial factors were stronger associated with low performance at work than with sickness absence (performance: job autonomy OR 1.28 CI 1.21-1.37, job demands OR 1.23 CI 1.16-1.31, emotionally demanding work OR 1.73 CI 1.62-1.85; sickness absence: job autonomy ns, job demands OR 1.09 CI 1.03-1.17, emotionally demanding work OR

Relative Status Determination for Spacecraft Relative Motion Based on Dual Quaternion

Directory of Open Access Journals (Sweden)

Jun Sun

2014-01-01

Full Text Available For the two-satellite formation, the relative motion and attitude determination algorithm is a key component that affects the flight quality and mission efficiency. The relative status determination algorithm is proposed based on the Extended Kalman Filter (EKF and the system state optimal estimate linearization. Aiming at the relative motion of the spacecraft formation navigation problem, the spacecraft relative kinematics and dynamics model are derived from the dual quaternion in the algorithm. Then taking advantage of EKF technique, combining with the dual quaternion integrated dynamic models, considering the navigation algorithm using the fusion measurement by the gyroscope and star sensors, the relative status determination algorithm is designed. At last the simulation is done to verify the feasibility of the algorithm. The simulation results show that the EKF algorithm has faster convergence speed and higher accuracy.

Improved GPS-based Satellite Relative Navigation Using Femtosecond Laser Relative Distance Measurements

Directory of Open Access Journals (Sweden)

Hyungjik Oh

2016-03-01

Full Text Available This study developed an approach for improving Carrier-phase Differential Global Positioning System (CDGPS based realtime satellite relative navigation by applying laser baseline measurement data. The robustness against the space operational environment was considered, and a Synthetic Wavelength Interferometer (SWI algorithm based on a femtosecond laser measurement model was developed. The phase differences between two laser wavelengths were combined to measure precise distance. Generated laser data were used to improve estimation accuracy for the float ambiguity of CDGPS data. Relative navigation simulations in real-time were performed using the extended Kalman filter algorithm. The GPS and laser-combined relative navigation accuracy was compared with GPS-only relative navigation solutions to determine the impact of laser data on relative navigation. In numerical simulations, the success rate of integer ambiguity resolution increased when laser data was added to GPS data. The relative navigational errors also improved five-fold and two-fold, relative to the GPS-only error, for 250 m and 5 km initial relative distances, respectively. The methodology developed in this study is suitable for application to future satellite formation-flying missions.

Public Relations and Marketing.

Science.gov (United States)

Savage, Daniel D.

1987-01-01

Urges community colleges to adopt pro-active public relations strategies. Examines the role of the public information officer in such areas as coordination of public relations and marketing activities, relations with media, and the development of a comprehensive public relations plan. (AYC)

Functional Programming With Relations

OpenAIRE

Hutton, Graham

1991-01-01

While programming in a relational framework has much to offer over the functional style in terms of expressiveness, computing with relations is less efficient, and more semantically troublesome. In this paper we propose a novel blend of the functional and relational styles. We identify a class of "causal relations", which inherit some of the bi-directionality properties of relations, but retain the efficiency and semantic foundations of the functional style.

Relatives and Relations in Paluai’

DEFF Research Database (Denmark)

Schokkin, Dineke; Otto, Ton

2017-01-01

This paper discusses the expression of kinship in Paluai (Baluan-Pam, ISO 639-3: blq), an Oceanic language spoken on Baluan Island, Manus Province, Papua New Guinea. Based on data gathered during extensive fieldwork, the authors first consider the formal characteristics of nominal possessive cons...... of birth order terms, which are a relatively rare phenomenon, and the partial replacement of the system by terms from the creole language Tok Pisin....

Macular xanthophylls, lipoprotein-related genes, and age-related macular degeneration1234

Science.gov (United States)

Koo, Euna; Neuringer, Martha; SanGiovanni, John Paul

2014-01-01

Plant-based macular xanthophylls (MXs; lutein and zeaxanthin) and the lutein metabolite meso-zeaxanthin are the major constituents of macular pigment, a compound concentrated in retinal areas that are responsible for fine-feature visual sensation. There is an unmet need to examine the genetics of factors influencing regulatory mechanisms and metabolic fates of these 3 MXs because they are linked to processes implicated in the pathogenesis of age-related macular degeneration (AMD). In this work we provide an overview of evidence supporting a molecular basis for AMD-MX associations as they may relate to DNA sequence variation in AMD- and lipoprotein-related genes. We recognize a number of emerging research opportunities, barriers, knowledge gaps, and tools offering promise for meaningful investigation and inference in the field. Overviews on AMD- and high-density lipoprotein (HDL)–related genes encoding receptors, transporters, and enzymes affecting or affected by MXs are followed with information on localization of products from these genes to retinal cell types manifesting AMD-related pathophysiology. Evidence on the relation of each gene or gene product with retinal MX response to nutrient intake is discussed. This information is followed by a review of results from mechanistic studies testing gene-disease relations. We then present findings on relations of AMD with DNA sequence variants in MX-associated genes. Our conclusion is that AMD-associated DNA variants that influence the actions and metabolic fates of HDL system constituents should be examined further for concomitant influence on MX absorption, retinal tissue responses to MX intake, and the capacity to modify MX-associated factors and processes implicated in AMD pathogenesis. PMID:24829491

Histopathology of IgG4-Related Autoimmune Hepatitis and IgG4-Related Hepatopathy in IgG4-Related Disease.

Science.gov (United States)

Nakanuma, Yasuni; Ishizu, Yoji; Zen, Yoh; Harada, Kenichi; Umemura, Takeji

2016-08-01

Immunoglobulin G4-related disease (IgG4-RD) is a systemic disease involving many organs; it includes IgG4-related sclerosing cholangitis and inflammatory pseudotumor in the hepatobiliary system. Two types of hepatic parenchymal involvement have been reported in IgG4-RD: IgG4-related autoimmune hepatitis (AIH) and IgG4-hepatopathy. Moreover, only three cases of IgG4-related AIH have been reported. Immunoglobulin G4-related AIH is clinicopathologically similar to AIH, except for an elevated serum IgG4 level and heavy infiltration of IgG4-positive plasma cells in the liver tissue. Interestingly, IgG4-related AIH can be complicated by well-known IgG4-RD(s). Immunoglobulin G4-hepatopathy, which includes various histopathological lesions encountered in the liver of patients with type I autoimmune pancreatitis, is classified into five histological categories: portal inflammation, large bile duct damage, portal sclerosis, lobular hepatitis, and cholestasis. Immunoglobulin G4-hepatopathy is currently a collective term covering hepatic lesions primarily or secondarily related to IgG4-related sclerosing cholangitis and type 1 autoimmune pancreatitis. In conclusion, the liver is not immune to IgG4-RD, and at least two types of hepatic involvement in IgG4-RD have been reported: IgG4-related AIH and IgG4-hepatopathy. Additional studies are required to clarify their precise clinical significance with respect to IgG4-RD and inherent liver diseases. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Relative Thinking Theory

OpenAIRE

Ofer H. Azar

2005-01-01

The article presents a theory that I denote “Relative Thinking Theory,” which claims that people consider relative differences and not only absolute differences when making various economics decisions, even in those cases where the rational model dictates that people should consider only absolute differences. The article reviews experimental evidence for this behavior, summarizing briefly several experiments I conducted, as well as some earlier related literature. It then discusses how we can...

Usage of emergency contraception between medical related and non-medical related students.

LENUS (Irish Health Repository)

Khalid, A K

2009-04-01

Teenagers and young adultshave the most risk of unplanned pregnancy, due to lack of awareness to see a family planning provider after unprotected sexual intercourse. In addition, nearly one in five physicians is reluctant to provide information regarding Emergency Contraception (EC) to women and this may contribute to their lack of awareness. This study was conducted to assess the knowledge, attitudes and practices regarding the use of EC between medical related students compared to non-medical related students. Data collection was done using questionnaires distributed among students in University College Cork (UCC). 93% of medically related students were aware of EC compared to only 73.5% of non-medically related students. Medical related students also were more aware about the mechanism of action and detailed knowledge of EC compared to the non-medical students. This study has proven that medically related students have more detailed knowledge regarding EC compared to non-medical related students. However, there was no significant difference noted regarding the attitude and practice between the two groups.

Vannmagasinet er ikke fullt før det renner over : en analyse av effekten av redusert etterspørsel i et vannkraftsystem, eksemplifisert med energieffektivisering i bygninger

OpenAIRE

Siljan, Marte

2010-01-01

Energieffektivisering i bygninger regnes som et av de mest kostnadseffektive tiltakene for å redusere forbruk av energi, samt bidra til reduksjon i klimagassutslipp. I følge rapporter fra blant annet Lavenergiutvalget (2009) og Klimakur 2020 (2010), vil det være mulig å frigjøre rundt 10 TWh elektrisitet fra norske bygninger i løpet av de neste ti årene. Denne masteroppgaven tar for seg følgene av en tilsvarende etterspørselsreduksjon i det norske kraftsystemet. Norge har et kraftsystem med n...

Predicción computacional de estructura terciaria de las proteínas humanas Hsp27, αB-cristalina y HspB8

Directory of Open Access Journals (Sweden)

Homero Saenz-Suárez

2011-03-01

Full Text Available Objetivo. Realizar predicciones computacionales de estructura de las proteínas humanas Hsp27, αB cristalina y HspB8. Materiales y métodos. La predicción de la estructura secundaria se obtuvo mediante un consenso de los programas de predicción secundaria GOR 4,nnPred,Sspro, APSSP2, JPredict, Porter, Prof, SOPMA, HNN y Psi-Pred. Los modelos de estructura terciaria se elaboraron a partir de fragmentos homólogos de proteínas con estructura terciaria conocida que fueron obtenidos por múltiples alineamientos. Empleando la secuencia primaria se obtuvieron perfiles de antigenicidad de las proteínas nativas y fueron analizados los perfiles de hidrofobicidad, polaridad, flexibilidad, accesibilidad tanto de las proteínas nativas como de las mutadas. Resultados. Las predicciones de estructura secundaria y terciariade las proteínas estudiadas muestran que en los tres casos, más del 65% son regiones en coil, 20-25% en hoja plegada y menos del 10% en alfa hélice. Los análisis de estructura primaria muestran que al menos uno de los perfiles estudiados, en cada mutación está alterado. Conclusiones. Los análisis comparativos de estructura sugieren que las mutaciones afectan la solubilidad de las proteínas mutadas y con ello su función como chaperonas moleculares

Productivity loss at work; Health-related and work-related factors

NARCIS (Netherlands)

Heuvel, S.G. van den; Geuskens, G.A.; Hooftman, W.E.; Koppes, L.L.J.; Bossche, S.N.J. van den

2010-01-01

Introduction Productivity loss is an increasing problem in an aging working population that is decreasing in numbers. The aim of this study is to identify work-related and health-related characteristics associated with productivity loss, due to either sickness absence or reduced performance at work.

Public relations and ethics

Directory of Open Access Journals (Sweden)

Bajić Milan

2010-01-01

Full Text Available The aim of this paper is the analysis of different forms of PR implementation and research its relation with ethics in practice. 'Public relations' is the every-day term that represents the job that is widely used in all aspects of life and work in today's society. Public relations represent a specific form of communication that has a particular application in society. Public relations involve focusing on a public aspect of organization with the aim of building a positive attitude and image. Image of public relations as a profession is often unfairly negative, and the reason for this is unprofessional and unethical relation of individuals towards their profession. In practice ethics in public relations is often considered to be an oxymoron. Ethical thinking of experts in public relations goes from Biblical attitude 'all you want people to do to you, do even so to them' (Matthew 7:12to professional loyalty to organization they work for. Because of unethical appearance it is important to set the rules, in the form of codex by which the public relations professionals will set their behaviors. .

How public relations works: theoretical roots and public relations perspectives

NARCIS (Netherlands)

Ihlen, Ø.; van Ruler, B.

2007-01-01

Public relations is often studied from a managerial, instrumental perspective or a psychological, behavioral perspective. To understand the role of public relations in building trust or mistrust and to develop - or destroy - a license to operate, it needs also to be studied as a social phenomenon.

Models as Relational Categories

Science.gov (United States)

Kokkonen, Tommi

2017-11-01

Model-based learning (MBL) has an established position within science education. It has been found to enhance conceptual understanding and provide a way for engaging students in authentic scientific activity. Despite ample research, few studies have examined the cognitive processes regarding learning scientific concepts within MBL. On the other hand, recent research within cognitive science has examined the learning of so-called relational categories. Relational categories are categories whose membership is determined on the basis of the common relational structure. In this theoretical paper, I argue that viewing models as relational categories provides a well-motivated cognitive basis for MBL. I discuss the different roles of models and modeling within MBL (using ready-made models, constructive modeling, and generative modeling) and discern the related cognitive aspects brought forward by the reinterpretation of models as relational categories. I will argue that relational knowledge is vital in learning novel models and in the transfer of learning. Moreover, relational knowledge underlies the coherent, hierarchical knowledge of experts. Lastly, I will examine how the format of external representations may affect the learning of models and the relevant relations. The nature of the learning mechanisms underlying students' mental representations of models is an interesting open question to be examined. Furthermore, the ways in which the expert-like knowledge develops and how to best support it is in need of more research. The discussion and conceptualization of models as relational categories allows discerning students' mental representations of models in terms of evolving relational structures in greater detail than previously done.

Relation Between Sustainability‑Related Communication and Competitiveness in the Chemical Industry

Directory of Open Access Journals (Sweden)

Jaroslava Hyršlová

2017-01-01

Full Text Available Interests of companies in the sustainability‑related communication have risen considerably in recent years. This paper focuses on the current state of sustainability‑related reporting in chemical industry companies registered in the Association of Chemical Industry in the Czech Republic. It deals with the form and the content of reporting, the importance of different stakeholders in this process as well as benefits of the sustainability‑related communication and its impacts on competitiveness of the company. This paper summarizes the results of a research executed in the year 2014. The results of the research showed that chemical industry companies were aware of the significance of sustainability‑related communication and they utilized various types of sustainability‑related reports for this communication. Companies prefer to report on the environmental and social aspects of their activities primarily in their annual reports, or they issue separate environmental reports. The research verified the relationship between the sustainability‑related communication and competitiveness. A suitable established high quality system of communication that provides sufficient information and meets the information requirements of the key stakeholders may significantly contribute to reputation improvement, to increased attractiveness of the company as an employer and thereby to maintain, to improve respectively, the level of a company’s competitiveness.

Pioneers as Relational Subjects? Probing Relationality as ...

African Journals Online (AJOL)

relational engagement roles in driving the energy transition, as described on their website. ... He comments, 'In Japan, they call it Viking leadership,' .... island, such as the mayor, representatives of different business, leading employees at the.

RELATIONS WITH THE PUBLIC VERSUS PUBLIC RELATIONS IN LOCAL PUBLIC ADMINISTRATION

Directory of Open Access Journals (Sweden)

Bente Florina Maria

2010-12-01

Full Text Available Concomitant with the evolution of society, public relations are socially expressed only together with the explicit articulation of public categories and public organizations, once the individual becomes a citizen whose satisfaction is at the core of the public systems preoccupations, ignoring times long gone when the ordinary citizen and the majority of the public administration representatives couldnt tell apart the concept of public relations from that of relations with the public.

Event-related potential correlates of emergent inference in human arbitrary relational learning.

Science.gov (United States)

Wang, Ting; Dymond, Simon

2013-01-01

Two experiments investigated the functional-anatomical correlates of cognition supporting untrained, emergent relational inference in a stimulus equivalence task. In Experiment 1, after learning a series of conditional relations involving words and pseudowords, participants performed a relatedness task during which EEG was recorded. Behavioural performance was faster and more accurate on untrained, indirectly related symmetry (i.e., learn AB and infer BA) and equivalence trials (i.e., learn AB and AC and infer CB) than on unrelated trials, regardless of whether or not a formal test for stimulus equivalence relations had been conducted. Consistent with previous results, event related potentials (ERPs) evoked by trained and emergent trials at parietal and occipital sites differed only for those participants who had not received a prior equivalence test. Experiment 2 further replicated and extended these behavioural and ERP findings using arbitrary symbols as stimuli and demonstrated time and frequency differences for trained and untrained relatedness trials. Overall, the findings demonstrate convincingly the ERP correlates of intra-experimentally established stimulus equivalence relations consisting entirely of arbitrary symbols and offer support for a contemporary cognitive-behavioural model of symbolic categorisation and relational inference. Copyright © 2012 Elsevier B.V. All rights reserved.

GNSS-Reflectometry based water level monitoring

Science.gov (United States)

Beckheinrich, Jamila; Schön, Steffen; Beyerle, Georg; Apel, Heiko; Semmling, Maximilian; Wickert, Jens

2013-04-01

Due to climate changing conditions severe changes in the Mekong delta in Vietnam have been recorded in the last years. The goal of the German Vietnamese WISDOM (Water-related Information system for the Sustainable Development Of the Mekong Delta) project is to build an information system to support and assist the decision makers, planners and authorities for an optimized water and land management. One of WISDOM's tasks is the flood monitoring of the Mekong delta. Earth reflected L-band signals from the Global Navigation Satellite System show a high reflectivity on water and ice surfaces or on wet soil so that GNSS-Reflectometry (GNSS-R) could contribute to monitor the water level in the main streams of the Mekong delta complementary to already existing monitoring networks. In principle, two different GNSS-R methods exist: the code- and the phase-based one. As the latter being more accurate, a new generation of GORS (GNSS Occultation, Reflectometry and Scatterometry) JAVAD DELTA GNSS receiver has been developed with the aim to extract precise phase observations. In a two week lasting measurement campaign, the receiver has been tested and several reflection events at the 150-200 m wide Can Tho river in Vietnam have been recorded. To analyze the geometrical impact on the quantity and quality of the reflection traces two different antennas height were tested. To track separately the direct and the reflected signal, two antennas were used. To derive an average height of the water level, for a 15 min observation interval, a phase model has been developed. Combined with the coherent observations, the minimum slope has been calculated based on the Least- Squares method. As cycle slips and outliers will impair the results, a preprocessing of the data has been performed. A cycle slip detection strategy that allows for automatic detection, identification and correction is proposed. To identify outliers, the data snooping method developed by Baarda 1968 is used. In this

Relational Leading

DEFF Research Database (Denmark)

Larsen, Mette Vinther; Rasmussen, Jørgen Gulddahl

2015-01-01

This first chapter presents the exploratory and curious approach to leading as relational processes – an approach that pervades the entire book. We explore leading from a perspective that emphasises the unpredictable challenges and triviality of everyday life, which we consider an interesting......, relevant and realistic way to examine leading. The chapter brings up a number of concepts and contexts as formulated by researchers within the field, and in this way seeks to construct a first understanding of relational leading....

A Review of the Literature Related to Government Relations in Higher Education

Science.gov (United States)

Brumfield, Randall; Miller, Michael T.

2008-01-01

This review of literature identifies the primary writings and research related to how higher education institutions operate government relations offices. These offices are defined by their mission and role of interfacing between institutional needs and officers and public officials. The review first reports the literature related to public…

Differential age-related effects on conjunctive and relational visual short-term memory binding.

Science.gov (United States)

Bastin, Christine

2017-12-28

An age-related associative deficit has been described in visual short-term binding memory tasks. However, separate studies have suggested that ageing disrupts relational binding (to associate distinct items or item and context) more than conjunctive binding (to integrate features within an object). The current study directly compared relational and conjunctive binding with a short-term memory task for object-colour associations in 30 young and 30 older adults. Participants studied a number of object-colour associations corresponding to their individual object span level in a relational task in which objects were associated to colour patches and a conjunctive task where colour was integrated into the object. Memory for individual items and for associations was tested with a recognition memory test. Evidence for an age-related associative deficit was observed in the relational binding task, but not in the conjunctive binding task. This differential impact of ageing on relational and conjunctive short-term binding is discussed by reference to two underlying age-related cognitive difficulties: diminished hippocampally dependent binding and attentional resources.

Special Relativity in Week One: 1) The Principle of Relativity

Science.gov (United States)

Huggins, Elisha

2011-01-01

We like to begin an introductory physics course with a law of physics that applies to everything, has no known exceptions, and whose consequences are already familiar to students. That law is the principle of relativity. By focusing on the principle of relativity itself, and a careful selection of the thought experiments, we can comfortably…

Association between Experiencing Relational Bullying and Adolescent Health-Related Quality of Life

Science.gov (United States)

Chester, Kayleigh L.; Spencer, Neil H.; Whiting, Lisa; Brooks, Fiona M.

2017-01-01

Background: Bullying is a public health concern for the school-aged population, however, the health outcomes associated with the subtype of relational bullying are less understood. The purpose of this study was to examine the association between relational bullying and health-related quality of life (HRQL) among young people. Methods: This study…

Tests Related to Pregnancy

Science.gov (United States)

... to learn. Search form Search Tests related to pregnancy You are here Home Testing & Services Testing for ... to Genetic Counseling . What Are Tests Related to Pregnancy? Pregnancy related testing is done before or during ...

Gravitation and relativity

CERN Document Server

Hoffmann, William F

1964-01-01

Remarks on the observational basis of general relativity ; Riemannian geometry ; gravitation as geometry ; gravitational waves ; Mach's principle and experiments on mass anisotropy ; the many faces of Mach ; the significance for the solar system of time-varying gravitation ; relativity principles and the role of coordinates in physics ; the superdense star and the critical nucleon number ; gravitation and light ; possible effects on the solar system of φ waves if they exist ; the Lyttleton-Bondi universe and charge equality ; quantization of general relativity ; Mach's principle as boundary condition for Einstein's equations.

Heat-Related Illnesses

Science.gov (United States)

... Share this! EmergencyCareForYou » Emergency 101 » Heat-Related Illnesses Heat-Related Illnesses Dr. Glenn Mitchell , Emergency physician at ... about heat cramps and heat stroke and exhaustion. Heat Cramps Symptoms include muscle spasms, usually in the ...

Valence shell threshold photoelectron spectroscopy of the CHxCN (x = 0-2) and CNC radicals.

Science.gov (United States)

Garcia, Gustavo A; Krüger, Julia; Gans, Bérenger; Falvo, Cyril; Coudert, Laurent H; Loison, Jean-Christophe

2017-07-07

We present the photoelectron spectroscopy of four radical species, CH x CN (x = 0-2) and CNC, formed in a microwave discharge flow-tube reactor by consecutive H abstractions from CH 3 CN (CH x CN + F → CH x-1 CN + HF (x = 1-3)). The spectra were obtained combining tunable vacuum ultraviolet synchrotron radiation with double imaging electron/ion coincidence techniques, which yielded mass-selected threshold photoelectron spectra. The results obtained for H 2 CCN complement existing ones while for the other radicals the data represent the first observation of their (single-photon) ionizing transitions. In the case of H 2 CCN, Franck-Condon calculations have been performed in order to assign the vibrational structure of the X + 1 A 1 ←X 2 B 1 ionizing transition. A similar treatment for the HCCN, CCN, and CNC radicals appeared to be more complicated mainly because a Renner-Teller effect strongly affects the vibrational levels of the ground electronic state of the HCCN + , CCN, and CNC species. Nevertheless, the first adiabatic ionization energies of these radicals are reported and compared to our ab initio calculated values, leading to new values for enthalpies of formation (Δ f H 298 0 (HCCN + (X 2 A ' ))=1517±12kJmol -1 ,Δ f H 298 0 (CCN(X 2 Π))=682±13kJmol -1 , and Δ f H 298 0 (CNC(X 2 Πg))=676±12kJmol -1 ), which are of fundamental importance for astrochemistry.

Avaliação da percepção de valor em Empreendimentos Habitacionais de Interesse Social: perspectivas de técnicos e de usuários

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Deyvid Aléx de Bitencourt Monteiro

Full Text Available ResumoEste artigo propõe-se uma análise que combina as percepções de valor das esferas de desenvolvimento (técnicos da Prefeitura Municipal de Porto Alegre e ocupação (usuários de empreendimentos habitacionais utilizando o mapeamento hierárquico de valor. A estratégia de pesquisa adotada é a Constructive Research. A população-alvo "usuários" faz parte do EHIS A.J. Renner pertencente ao Programa Integrado Entrada da Cidade. O processo de pesquisa envolveu a construção de um questionário, planejamento amostral, coleta e análise de dados utilizando técnicas estatísticas descritivas e laddering cujo resultado é representado pelo mapeamento hierárquico de valor (MHV. Dentre os principais resultados, a unidade habitacional representou a maior divergência entre as percepções dos técnicos e dos usuários. Já o empreendimento representou uma boa convergência entre as percepções de ambos. Ainda, o MHV permitiu explorar quais benefícios estão sendo atingidos pelo programa, além da relação desses benefícios com a satisfação e permanência dos usuários no EHIS. A principal contribuição desta pesquisa está na identificação dos níveis mais abstratos presentes na percepção dos usuários, insuficientemente compreendidos pelos técnicos ou explicitados pelos programas habitacionais brasileiros.

Twenty-first workshop on geothermal reservoir engineering: Proceedings

Energy Technology Data Exchange (ETDEWEB)

None

1996-01-26

PREFACE The Twenty-First Workshop on Geothermal Reservoir Engineering was held at the Holiday Inn, Palo Alto on January 22-24, 1996. There were one-hundred fifty-five registered participants. Participants came from twenty foreign countries: Argentina, Austria, Canada, Costa Rica, El Salvador, France, Iceland, Indonesia, Italy, Japan, Mexico, The Netherlands, New Zealand, Nicaragua, the Philippines, Romania, Russia, Switzerland, Turkey and the UK. The performance of many geothermal reservoirs outside the United States was described in several of the papers. Professor Roland N. Horne opened the meeting and welcomed visitors. The key note speaker was Marshall Reed, who gave a brief overview of the Department of Energy's current plan. Sixty-six papers were presented in the technical sessions of the workshop. Technical papers were organized into twenty sessions concerning: reservoir assessment, modeling, geology/geochemistry, fracture modeling hot dry rock, geoscience, low enthalpy, injection, well testing, drilling, adsorption and stimulation. Session chairmen were major contributors to the workshop, and we thank: Ben Barker, Bobbie Bishop-Gollan, Tom Box, Jim Combs, John Counsil, Sabodh Garg, Malcolm Grant, Marcel0 Lippmann, Jim Lovekin, John Pritchett, Marshall Reed, Joel Renner, Subir Sanyal, Mike Shook, Alfred Truesdell and Ken Williamson. Jim Lovekin gave the post-dinner speech at the banquet and highlighted the exciting developments in the geothermal field which are taking place worldwide. The Workshop was organized by the Stanford Geothermal Program faculty, staff, and graduate students. We wish to thank our students who operated the audiovisual equipment. Shaun D. Fitzgerald Program Manager.

Different workplace-related strains and different workplace-related anxieties in different professions.

Science.gov (United States)

Muschalla, Beate; Linden, Michael

2013-08-01

Similar to the spectrum of the traditional anxiety disorders, there are also different types of workplace-related anxieties. The question is whether in different professional settings different facets of workplace-related anxieties are predominant. A convenience sample of 224 inpatients (71% women) from a department of psychosomatic medicine was investigated. They were assessed with a structured diagnostic interview concerning anxiety disorders and specific workplace-related anxieties. Office workers suffer relatively most often from specific social anxiety, insufficiency, and workplace phobia. Service workers suffer predominantly from unspecific social anxiety. Health care workers are characterized by insufficiency, adjustment disorders, posttraumatic stress disorder, and workplace phobia. Persons in production and education are least often affected by workplace-related anxieties. Different types of anxiety are seen in different professional domains, parallel to workplace characteristics.

Relation of Gothic arch apex to dentist-assisted centric relation.

Science.gov (United States)

Myers, M; Dziejma, R; Goldberg, J; Ross, R; Sharry, J

1980-07-01

These data suggest that the widely held belief that thumb pressure can position the mandible consistently more posterior than the position indicated by the Gothic arch apex is unfounded. Furthermore, this study provides no evidence to support the contention that the dentist-assisted jaw relation is more reproducible than the relation indicated by the Gothic arch apex.

MOTHER – CHILD RELATION AND FACTORS AFFECTING T H I S RELATION

Directory of Open Access Journals (Sweden)

Fatma TEZEL ŞAHİ N

2014-09-01

Full Text Available The social institution where a child first meet with his birth and sets his social relations is his family. The communication of parents and other members of family determines the place of child in the family. In the preschool period when the basis of futu re lives is formed, healthy relations made with child are of great importance. What kind of a person the child starting to perceive himself and his environment in this period will be is determined with the life in this period. Family and relations within f amily as a structure have an impact on the child. Relations within family and experiences will be determinants of the relations with others. In particular, the tie formed in the earlier years between mother and child will have an effect on the personality creation and social relations in the period of adolescence and adulthood. Successful relations of the child and unconditioned love and trust that will be built with his mother is known to be the basis of their future life. In order that a mother could get in a healthy relation with her child, it is necessary that she should have an attitude of self - confidence, respectful, sensible to his problems, collaborative, sharing the feelings and views her children and accepting them. Mothers having an insisting atti tude not to accept their views and excluding them and not looking for a logic in their views cannot build a healthy relation. Children growing up with a healthy mother – child relation will become independent individuals with a self - esteem. The basis of a healthy mother – child relation depends on an infancy period starting with the process of pregnancy and going on with physical contact and nutrition after birth. Mother’s feeding of her baby, her care and preparation for life creates love and feeling of tr ust at child. When the child becomes an adult, he will guide his life with these two basic feelings. Mother should be a person giving her love to him, supporting the child

Melt inclusion evidence for a volatile-enriched (H2O, Cl, B) component in parental magmas of Gorgona Island komatiites

Science.gov (United States)

Kamenetsky, V.; Sobolev, A.; McDonough, W.

2003-04-01

Late Cretaceous komatiites of Gorgona Island are unambiguous samples of ultra-mafic melts related to a hot and possibly 'wet' mantle plume. Despite significant efforts in studying komatiites, their volatile abundances remain largely unknown because of significant alteration of rocks and lack of fresh glasses. This work presents major, trace and volatile element data for 22 partially homogenised (at 1275oC and 1 bar pressure) melt inclusions in olivine (Fo 90.5-91.5) from a Gorgona Isl. komatiite (# Gor 94-3). Major element compositions (except FeO which is notably lower by up to 5 wt% as a result of post-entrapment re-equilibration) and most lithophile trace elements of melt inclusions are indistinguishable from the whole rock komatiites. With the exception of three inclusions that have low Na, H2O, Cl, F and S (likely compromised and degassed during heating) most compositions are characterised by relatively constant and high volatile abundances (H2O 0.4-0.8 wt%, Cl 0.02-0.03 wt%, B 0.8-1.4 ppm). These are interpreted as representative of original volatiles in parental melts because they correspond to the internal volatile pressure in the closed inclusions significantly exceeding 1 bar pressure of heating experiment. Although H2O is strongly enriched (PM-normalised H2O/Ce 10-17) its concentrations correlate well with many elements (e.g. Yb, Er, Y, Ti, Sr, Be). Other positive anomalies on the overall depleted (La/Sm 0.26-0.33) PM normalized compositional spectra of melt inclusions are shown by B (B/K 2.4-5.4) and Cl (Cl/K 11-16). Compositions of melt inclusions, when corrected for Fe loss and recalculated in equilibrium with host olivine, have high MgO (15.4-16.4 wt%; Mg# of 74) and substantial H2O (0.4-0.6 wt%) contents. This together with the data on other 'enriched' elements argues for the presence of previously unknown volatile-enriched component in the parental melts of Gorgona Isl. komatiites. We discuss contamination of magmas by altered oceanic crust in the

Relations with parents and identity statuses in the relational domain in emerging adults

Directory of Open Access Journals (Sweden)

Justyna Michałek

2016-09-01

Full Text Available Background Emerging adulthood is a core developmental period in which individuals can develop a meaningful identity in the relational domain (with a romantic partner. The aim of the study was to examine relationships between relations with parents and identity statuses in the relational domain in emerging adults. Participants and procedure Participants were 266 (47.30% males emerging adults (M = 22.50, SD = 1.73. They completed self-report measures of relations with parents and identity. Results More than half of the participants were in the moratorium status or were not involved in a romantic relationship (35% and 29%, respectively. Relations with parents were linked to identity statuses in the relational domain. Particularly, the perception of low autonomy given by the father was related to less mature identity statuses. Conclusions This study highlighted that transition from singleness to stable partnerships seems to be challenging. Therefore, it is important to examine correlates of identity statuses in this domain.

Heat-Related Illnesses

Medline Plus

Full Text Available ... Share this! EmergencyCareForYou » Emergency 101 » Heat-Related Illnesses Heat-Related Illnesses Dr. Glenn Mitchell , Emergency physician at ... about heat cramps and heat stroke and exhaustion. Heat Cramps Symptoms include muscle spasms, usually in the ...

Simple relation algebras

CERN Document Server

Givant, Steven

2017-01-01

This monograph details several different methods for constructing simple relation algebras, many of which are new with this book. By drawing these seemingly different methods together, all are shown to be aspects of one general approach, for which several applications are given. These tools for constructing and analyzing relation algebras are of particular interest to mathematicians working in logic, algebraic logic, or universal algebra, but will also appeal to philosophers and theoretical computer scientists working in fields that use mathematics. The book is written with a broad audience in mind and features a careful, pedagogical approach; an appendix contains the requisite background material in relation algebras. Over 400 exercises provide ample opportunities to engage with the material, making this a monograph equally appropriate for use in a special topics course or for independent study. Readers interested in pursuing an extended background study of relation algebras will find a comprehensive treatme...

Transit labor relations guide

Science.gov (United States)

2001-09-01

This report is designed as a guide for those involved in labor relations in the transit industry. It begins with a history of transit labor relations. The economic, political, and legal environment of transit relations is then discussed. A section fo...

MOTHER – CHILD RELATION AND FACTORS AFFECTING THIS RELATION

OpenAIRE

TEZEL ŞAHİN, Fatma

2014-01-01

The social institution where a child first meet with his birth and sets his social relations is his family. The communication of parents and other members of family determines the place of child in the family. In the preschool period when the basis of future lives is formed, healthy relations made with child are of great importance. What kind of a person the child starting to perceive himself and his environment in this period will be is determined with the life in this period. Family and rel...

MOTHER – CHILD RELATION AND FACTORS AFFECTING THIS RELATION

OpenAIRE

TEZEL ŞAHİN, Fatma

2015-01-01

The social institution where a child first meet with his birth and sets his social relations is his family. The communication of parents and other members of family determines the place of child in the family. In the preschool period when the basis of future lives is formed, healthy relations made with child are of great importance. What kind of a person the child starting to perceive himself and his environment in this period will be is determined with the life in this period. Family and rel...

The Principle of Relativity and the Indeterminacy of Special Relativity

Science.gov (United States)

de Abreu, Rodrigo; Guerra, Vasco

2008-01-01

This work ends a trilogy devoted to a journey into the foundations of special relativity. The first paper debated the meaning of the constancy of the two-way speed of light and its close relation to the conceptualization of time. The second one addressed the question of the possible constancy of the one-way speed of light and the trivial--but,…

Algorithmic Relative Complexity

Directory of Open Access Journals (Sweden)

Daniele Cerra

2011-04-01

Full Text Available Information content and compression are tightly related concepts that can be addressed through both classical and algorithmic information theories, on the basis of Shannon entropy and Kolmogorov complexity, respectively. The definition of several entities in Kolmogorov’s framework relies upon ideas from classical information theory, and these two approaches share many common traits. In this work, we expand the relations between these two frameworks by introducing algorithmic cross-complexity and relative complexity, counterparts of the cross-entropy and relative entropy (or Kullback-Leibler divergence found in Shannon’s framework. We define the cross-complexity of an object x with respect to another object y as the amount of computational resources needed to specify x in terms of y, and the complexity of x related to y as the compression power which is lost when adopting such a description for x, compared to the shortest representation of x. Properties of analogous quantities in classical information theory hold for these new concepts. As these notions are incomputable, a suitable approximation based upon data compression is derived to enable the application to real data, yielding a divergence measure applicable to any pair of strings. Example applications are outlined, involving authorship attribution and satellite image classification, as well as a comparison to similar established techniques.

Elements of relativity theory

International Nuclear Information System (INIS)

Lawden, D.F.

1985-01-01

The book on elements of relativity theory is intended for final year school students or as an early university course in mathematical physics. Special principle of relativity, lorentz transformation, velocity transformations, relativistic mechanics, and general theory of relativity, are all discussed. (U.K.)

Relativity theory and gravitation

International Nuclear Information System (INIS)

Bondi, H.

1986-01-01

The paper on relativity theory and gravitation is presented as a preface to the first of the articles submitted to the Journal on general relativity. Newtonian gravitation and and observation, relativity, and the sources of the gravitational field, are all discussed. (UK)

Relational aggression in marriage.

Science.gov (United States)

Carroll, Jason S; Nelson, David A; Yorgason, Jeremy B; Harper, James M; Ashton, Ruth Hagmann; Jensen, Alexander C

2010-01-01

Drawing from developmental theories of relational aggression, this article reports on a study designed to identify if spouses use relationally aggressive tactics when dealing with conflict in their marriage and the association of these behaviors with marital outcomes. Using a sample of 336 married couples (672 spouses), results revealed that the majority of couples reported that relationally aggressive behaviors, such as social sabotage and love withdrawal, were a part of their marital dynamics, at least to some degree. Gender comparisons of partner reports of their spouse's behavior revealed that wives were significantly more likely to be relationally aggressive than husbands. Structural equation modeling demonstrated that relational aggression is associated with lower levels of marital quality and greater marital instability for both husbands and wives. Implications are drawn for the use of relational aggression theory in the future study of couple conflict and marital aggression. (c) 2010 Wiley-Liss, Inc.

Factors associated with drug-related harms related to policing in Tijuana, Mexico

Science.gov (United States)

2011-01-01

Objective To assess factors associated with drug-related harms related to policing among injection drug users (IDUs) in Tijuana, Mexico. Methods IDUs who were over 18 years old and had injected drugs within the last six months were recruited via respondent-driven sampling and underwent questionnaires and testing for HIV (human immunodeficiency virus), syphilis and TB (tuberculosis). Random effects logistic regression was used to simultaneously model factors associated with five drug-related harms related to policing practices in the prior six months (i.e., police led them to rush injections; affected where they bought drugs; affected locations where they used drugs; feared that police will interfere with their drug use; receptive syringe sharing). Results Of 727 IDUs, 85% were male; median age was 38 years. Within the last 6 months, 231 (32%) of IDUs reported that police had led them to rush injections, affected where they bought or used drugs or were very afraid police would interfere with their drug use, or shared syringes. Factors independently associated with drug-related harms related to policing within the last six months included: recent arrest, homelessness, higher frequencies of drug injection, use of methamphetamine, using the local needle exchange program and perceiving a decrease in the purity of at least one drug. Conclusions IDUs who experienced drug-related harms related to policing were those who were most affected by other micro and macro influences in the physical risk environment. Police education programs are needed to ensure that policing practices do not exacerbate risky behaviors or discourage protective behaviors such as needle exchange program use, which undermines the right to health for people who inject drugs. PMID:21477299

Factors associated with drug-related harms related to policing in Tijuana, Mexico

Directory of Open Access Journals (Sweden)

Patterson Thomas L

2011-04-01

Full Text Available Abstract Objective To assess factors associated with drug-related harms related to policing among injection drug users (IDUs in Tijuana, Mexico. Methods IDUs who were over 18 years old and had injected drugs within the last six months were recruited via respondent-driven sampling and underwent questionnaires and testing for HIV (human immunodeficiency virus, syphilis and TB (tuberculosis. Random effects logistic regression was used to simultaneously model factors associated with five drug-related harms related to policing practices in the prior six months (i.e., police led them to rush injections; affected where they bought drugs; affected locations where they used drugs; feared that police will interfere with their drug use; receptive syringe sharing. Results Of 727 IDUs, 85% were male; median age was 38 years. Within the last 6 months, 231 (32% of IDUs reported that police had led them to rush injections, affected where they bought or used drugs or were very afraid police would interfere with their drug use, or shared syringes. Factors independently associated with drug-related harms related to policing within the last six months included: recent arrest, homelessness, higher frequencies of drug injection, use of methamphetamine, using the local needle exchange program and perceiving a decrease in the purity of at least one drug. Conclusions IDUs who experienced drug-related harms related to policing were those who were most affected by other micro and macro influences in the physical risk environment. Police education programs are needed to ensure that policing practices do not exacerbate risky behaviors or discourage protective behaviors such as needle exchange program use, which undermines the right to health for people who inject drugs.

Measuring Relational Reasoning

Science.gov (United States)

Alexander, Patricia A.; Dumas, Denis; Grossnickle, Emily M.; List, Alexandra; Firetto, Carla M.

2016-01-01

Relational reasoning is the foundational cognitive ability to discern meaningful patterns within an informational stream, but its reliable and valid measurement remains problematic. In this investigation, the measurement of relational reasoning unfolded in three stages. Stage 1 entailed the establishment of a research-based conceptualization of…

Relative energy for the Korteweg theory and related Hamiltonian flows in gas dynamics

KAUST Repository

Giesselmann, Jan; Lattanzio, Corrado; Tzavaras, Athanasios

2016-01-01

For an Euler system, with dynamics generated by a potential energy functional, we propose a functional format for the relative energy and derive a relative energy identity. The latter, when applied to specific energies, yields relative energy

Sport-related concussions

Directory of Open Access Journals (Sweden)

Jéssica Natuline Ianof

Full Text Available ABSTRACT Traumatic brain injury (TBI is a major cause of lifelong disability and death worldwide. Sport-related traumatic brain injury is an important public health concern. The purpose of this review was to highlight the importance of sport-related concussions. Concussion refers to a transient alteration in consciousness induced by external biomechanical forces transmitted directly or indirectly to the brain. It is a common, although most likely underreported, condition. Contact sports such as American football, rugby, soccer, boxing, basketball and hockey are associated with a relatively high prevalence of concussion. Various factors may be associated with a greater risk of sport-related concussion, such as age, sex, sport played, level of sport played and equipment used. Physical complaints (headache, fatigue, dizziness, behavioral changes (depression, anxiety, irritability and cognitive impairment are very common after a concussion. The risk of premature return to activities includes the prolongation of post-concussive symptoms and increased risk of concussion recurrence.

A Bigraph Relational Model

DEFF Research Database (Denmark)

Beauquier, Maxime; Schürmann, Carsten

2011-01-01

In this paper, we present a model based on relations for bigraphical reactive system [Milner09]. Its defining characteristics are that validity and reaction relations are captured as traces in a multi-set rewriting system. The relational model is derived from Milner's graphical definition...

Two multi-dimensional uncertainty relations

International Nuclear Information System (INIS)

Skala, L; Kapsa, V

2008-01-01

Two multi-dimensional uncertainty relations, one related to the probability density and the other one related to the probability density current, are derived and discussed. Both relations are stronger than the usual uncertainty relations for the coordinates and momentum

EU-Mashreq Relations

DEFF Research Database (Denmark)

Seeberg, Peter

2018-01-01

-related foreign policy considerations: the ENP Action Plans (APs) ‘will draw on a common set of principles but will be differentiated, reflecting the existing state of relations with each country, its needs and capacities, as well as common interests’ (Commission of the European Communities 2004). In the Mashreq...

Computer simulations of equilibrium magnetization and microstructure in magnetic fluids

Science.gov (United States)

Rosa, A. P.; Abade, G. C.; Cunha, F. R.

2017-09-01

In this work, Monte Carlo and Brownian Dynamics simulations are developed to compute the equilibrium magnetization of a magnetic fluid under action of a homogeneous applied magnetic field. The particles are free of inertia and modeled as hard spheres with the same diameters. Two different periodic boundary conditions are implemented: the minimum image method and Ewald summation technique by replicating a finite number of particles throughout the suspension volume. A comparison of the equilibrium magnetization resulting from the minimum image approach and Ewald sums is performed by using Monte Carlo simulations. The Monte Carlo simulations with minimum image and lattice sums are used to investigate suspension microstructure by computing the important radial pair-distribution function go(r), which measures the probability density of finding a second particle at a distance r from a reference particle. This function provides relevant information on structure formation and its anisotropy through the suspension. The numerical results of go(r) are compared with theoretical predictions based on quite a different approach in the absence of the field and dipole-dipole interactions. A very good quantitative agreement is found for a particle volume fraction of 0.15, providing a validation of the present simulations. In general, the investigated suspensions are dominated by structures like dimmer and trimmer chains with trimmers having probability to form an order of magnitude lower than dimmers. Using Monte Carlo with lattice sums, the density distribution function g2(r) is also examined. Whenever this function is different from zero, it indicates structure-anisotropy in the suspension. The dependence of the equilibrium magnetization on the applied field, the magnetic particle volume fraction, and the magnitude of the dipole-dipole magnetic interactions for both boundary conditions are explored in this work. Results show that at dilute regimes and with moderate dipole

General relativity

International Nuclear Information System (INIS)

Gourgoulhon, Eric

2013-01-01

The author proposes a course on general relativity. He first presents a geometrical framework by addressing, presenting and discussion the following notions: the relativistic space-time, the metric tensor, Universe lines, observers, principle of equivalence and geodesics. In the next part, he addresses gravitational fields with spherical symmetry: presentation of the Schwarzschild metrics, radial light geodesics, gravitational spectral shift (Einstein effect), orbitals of material objects, photon trajectories. The next parts address the Einstein equation, black holes, gravitational waves, and cosmological solutions. Appendices propose a discussion of the relationship between relativity and GPS, some problems and their solutions, and Sage codes

Weak relativity

CERN Document Server

Selleri, Franco

2015-01-01

Weak Relativity is an equivalent theory to Special Relativity according to Reichenbach’s definition, where the parameter epsilon equals to 0. It formulates a Neo-Lorentzian approach by replacing the Lorentz transformations with a new set named “Inertial Transformations”, thus explaining the Sagnac effect, the twin paradox and the trip from the future to the past in an easy and elegant way. The cosmic microwave background is suggested as a possible privileged reference system. Most importantly, being a theory based on experimental proofs, rather than mutual consensus, it offers a physical description of reality independent of the human observation.

Decreasing Relative Risk Premium

DEFF Research Database (Denmark)

Hansen, Frank

relative risk premium in the small implies decreasing relative risk premium in the large, and decreasing relative risk premium everywhere implies risk aversion. We finally show that preferences with decreasing relative risk premium may be equivalently expressed in terms of certain preferences on risky......We consider the risk premium demanded by a decision maker with wealth x in order to be indifferent between obtaining a new level of wealth y1 with certainty, or to participate in a lottery which either results in unchanged present wealth or a level of wealth y2 > y1. We define the relative risk...... premium as the quotient between the risk premium and the increase in wealth y1–x which the decision maker puts on the line by choosing the lottery in place of receiving y1 with certainty. We study preferences such that the relative risk premium is a decreasing function of present wealth, and we determine...

STRATEGI KOMUNIKASI PUBLIC RELATIONS

Directory of Open Access Journals (Sweden)

Artis Artis

2011-11-01

Full Text Available Living man in interrelates society. Relationship among human being done by gets communication so man one by another one mutually understand and influence regard for the benefit, it that always been practiced by Public Relations( liaison in a governance and also firm institute to reach to the effect which ices. The institute of Public Relations declares for,”Public Relations is overall effort which be passed off by design and berkesenambungan in order to creates and pet keenness and mutual understanding among an organization with whole its member “. In this case, Public Relations in give distribution on manajement's strategy there is two: First, Doing task as part of Public Relations's strategy and involvement in comprehensive process and gives benefit for management an organization. Both of, Public Relations gets role in management strategy in bring off activity to reach to the effect good one gets internal character and also external one correspond to that desirable by good institute on level governance and firm.

De Sitter projective relativity

CERN Document Server

Licata, Ignazio; Benedetto, Elmo

2017-01-01

This book presents the Projective approach to de Sitter Relativity. It traces the development of renewed interest in models of the universe at constant positive curvature such as "vacuum" geometry. The De Sitter Theory of Relativity, formulated in 1917 with Willem De Sitter's solution of the Einstein equations, was used in different fields during the 1950s and 1960s, in the work of H. Bacry, J.M. LevyLeblond and F.Gursey, to name some important contributors. From the 1960s to 1980s, L. Fantappié and G. Arcidiacono provided an elegant group approach to the De Sitter universe putting the basis for special and general projective relativity. Today such suggestions flow into a unitary scenario, and this way the De Sitter Relativity is no more a "missing opportunity" (F. Dyson, 1972), but has a central role in theoretical physics. In this volume a systematic presentation is given of the De Sitter Projective relativity, with the recent developments in projective general relativity and quantum cosmology.

The relational universe

International Nuclear Information System (INIS)

Magnon, A.

1998-01-01

A relational approach to be observable universe is proposed, which precludes the concept of absolute background. Space-time events emerge as dynamical entities which owe their existence to a memorization process, itself inter wind with the availability of cosmological horizons (screening from totality) sourcing long-range correlations. The resulting (and relational) mode of description sheds light on various paradoxes (EPR, Foucault pendolum, light beam effect, etc.), on the problem of instantaneous and global influences (quark deconfinement) as related to the interconnectedness of our cosmos. This scenario leads to comment on living systems vs. robots, and on non-recursive and global aspects of the mathematical intuition

Are hospitals also for relatives?

DEFF Research Database (Denmark)

Nissen, Nina Konstantin; Madsen, Mette; Kjøller, Mette

2008-01-01

at relatives of patients with cardiac diseases is sparse. This study aimed to survey the prevalence of health services for relatives of cardiac patients in Denmark. METHODS: We surveyed activities offered by Danish hospitals to the relatives of cardiac patients. Data were obtained from an Internet-based survey...... and 50 of 55 invited hospital departments participated. RESULTS: Almost all departments offer activities to relatives of cardiac patients, but only one-quarter have activities specifically aimed at supporting relatives. Large departments offer activities for relatives more often than smaller departments....... Participation rates for relatives are generally low, and the departments experience numerous barriers in providing activities for relatives of heart patients. CONCLUSIONS: Danish hospitals focus very little on relatives of cardiac patients, and this seems to be due to several factors, including lack...

Relative Lyapunov Center Bifurcations

DEFF Research Database (Denmark)

Wulff, Claudia; Schilder, Frank

2014-01-01

Relative equilibria (REs) and relative periodic orbits (RPOs) are ubiquitous in symmetric Hamiltonian systems and occur, for example, in celestial mechanics, molecular dynamics, and rigid body motion. REs are equilibria, and RPOs are periodic orbits of the symmetry reduced system. Relative Lyapunov...... center bifurcations are bifurcations of RPOs from REs corresponding to Lyapunov center bifurcations of the symmetry reduced dynamics. In this paper we first prove a relative Lyapunov center theorem by combining recent results on the persistence of RPOs in Hamiltonian systems with a symmetric Lyapunov...... center theorem of Montaldi, Roberts, and Stewart. We then develop numerical methods for the detection of relative Lyapunov center bifurcations along branches of RPOs and for their computation. We apply our methods to Lagrangian REs of the N-body problem....

Nonmaterialized Relations and the Support of Information Retrieval Applications by Relational Database Systems.

Science.gov (United States)

Lynch, Clifford A.

1991-01-01

Describes several aspects of the problem of supporting information retrieval system query requirements in the relational database management system (RDBMS) environment and proposes an extension to query processing called nonmaterialized relations. User interactions with information retrieval systems are discussed, and nonmaterialized relations are…

Parental educational practices in relation to children's anxiety disorder-related behavior.

Science.gov (United States)

Mellon, Robert C; Moutavelis, Adrianos G

2011-08-01

Schoolchildren reported their parents' use of aversive control and positive reinforcement contingencies in their educational interventions, as well as parental non-responsiveness to their requests for educational assistance. They also reported their own levels of six dimensions of anxiety disorder-related phenomena. Both parental use of aversive control and non-responsiveness were directly related to overall levels of child anxiety disorder-related behavior; these correlations were more robust than those observed in previous investigations of more diffuse dimensions of parenting style and trait anxiety. Panic disorder/agoraphobia and Generalized anxiety disorder were the dimensions most strongly correlated with both parental aversive control and non-responsiveness, while Compulsive behavior was uniquely uncorrelated with parental non-responsiveness and uniquely correlated with parental use of positive reinforcement contingencies. Differences in the magnitudes of correlations between anxiety disorder-related dimensions and parental educational practices are interpreted in terms of the probable differential effectiveness of their constituent behaviors in terminating parent-mediated negative reinforcers. Copyright © 2011 Elsevier Ltd. All rights reserved.

Destination: Alumni Relations

Science.gov (United States)

Scully, Maura King

2010-01-01

Increasingly today, with the growing and sophisticated skill set alumni professionals need to get the job done, alumni relations has become a destination career rather than a stop along the way. Modern alumni relations is "so much more than homecoming and punch-and-cookie receptions." It's marketing, volunteer management, and social networking. To…

Modernization of credit relations

Directory of Open Access Journals (Sweden)

S.V. Volosovich

2015-03-01

Full Text Available Nowadays it is essential to modernize credit relations in the conditions of global economy transformations. This is due to the influence of integration processes on credit relations and transformation of the risks inherent in the credit field. The purpose of this article is to develop measures that help to improve the efficiency of interaction of credit relations’ participants. Modernization of credit relations is based on the interaction of its main and indirect subjects who belong to the subsystems of loans granting, deposits attraction and provision of related services. Its goal is to pass from extensive to intensive model of interaction between the subjects of credit relations. Components of the credit relations modernization are the following: institutional modernization, which is based on the interaction of credit relations’ subjects, and ensures the development of competition in all credit market’s segments, the creation of its corresponding infrastructure, qualitative change in the approaches of regulation and supervision; technological modernization, which involves the formation of joint products on the credit market and the formation of an integrated informational and analytical system. In the result of the credit relations’ modernization it is expected to achieve synergies between the subjects of credit relations, that will lead to changes in the business architecture of the financial market.

Producing and Recognizing Analogical Relations

Science.gov (United States)

Lipkens, Regina; Hayes, Steven C

2009-01-01

Analogical reasoning is an important component of intelligent behavior, and a key test of any approach to human language and cognition. Only a limited amount of empirical work has been conducted from a behavior analytic point of view, most of that within Relational Frame Theory (RFT), which views analogy as a matter of deriving relations among relations. The present series of four studies expands previous work by exploring the applicability of this model of analogy to topography-based rather than merely selection-based responses and by extending the work into additional relations, including nonsymmetrical ones. In each of the four studies participants pretrained in contextual control over nonarbitrary stimulus relations of sameness and opposition, or of sameness, smaller than, and larger than, learned arbitrary stimulus relations in the presence of these relational cues and derived analogies involving directly trained relations and derived relations of mutual and combinatorial entailment, measured using a variety of productive and selection-based measures. In Experiment 1 participants successfully recognized analogies among stimulus networks containing same and opposite relations; in Experiment 2 analogy was successfully used to extend derived relations to pairs of novel stimuli; in Experiment 3 the procedure used in Experiment 1 was extended to nonsymmetrical comparative relations; in Experiment 4 the procedure used in Experiment 2 was extended to nonsymmetrical comparative relations. Although not every participant showed the effects predicted, overall the procedures occasioned relational responses consistent with an RFT account that have not yet been demonstrated in a behavior-analytic laboratory setting, including productive responding on the basis of analogies. PMID:19230515

Relative Deprivation and Relative Wealth Enhances Anti-Immigrant Sentiments: The V-Curve Re-Examined.

Directory of Open Access Journals (Sweden)

Jolanda Jetten

Full Text Available Previous research has shown that negative attitudes towards immigrants and support for anti-immigrant parties are observed both among those experiencing relative deprivation and those experiencing relative gratification (so called v-curve. Whereas the effect of relative deprivation is intuitive, the effect of relative gratification is more difficult to explain. Why would economic prosperity provoke negative attitudes towards immigrants? We first present correlational (Study 1 and experimental (Study 2 support for the v-curve. In Study 1, in a national Swiss referendum, a higher percentage anti-immigrant voting was found in cantons with relatively lower and relatively higher relative disposable income. In Study 2, in a hypothetical society, more opposition to 'newcomers' joining society was found among poor or above average wealth group members than among those in a moderate wealth group condition. In Study 3, we replicate this finding and also show that opposition to immigration is higher for all wealth groups when societal inequality is growing rather than declining. In a final study, we examine different forms of relative gratification and mediators of the relationship between relative gratification and opposition to immigration (i.e., identification, collective self-definition as competent and cold, and fear about future wealth. Only fear about future wealth mediates this relationship. We conclude that, paradoxically, relative gratification effects are partly due to the fear of future deprivation.

Sleep-related movement disorders.

Science.gov (United States)

Merlino, Giovanni; Gigli, Gian Luigi

2012-06-01

Several movement disorders may occur during nocturnal rest disrupting sleep. A part of these complaints is characterized by relatively simple, non-purposeful and usually stereotyped movements. The last version of the International Classification of Sleep Disorders includes these clinical conditions (i.e. restless legs syndrome, periodic limb movement disorder, sleep-related leg cramps, sleep-related bruxism and sleep-related rhythmic movement disorder) under the category entitled sleep-related movement disorders. Moreover, apparently physiological movements (e.g. alternating leg muscle activation and excessive hypnic fragmentary myoclonus) can show a high frequency and severity impairing sleep quality. Clinical and, in specific cases, neurophysiological assessments are required to detect the presence of nocturnal movement complaints. Patients reporting poor sleep due to these abnormal movements should undergo non-pharmacological or pharmacological treatments.

Quantum relativity theory

International Nuclear Information System (INIS)

Banai, M.

1983-11-01

A quantum relativity theory formulated in terms of Davis' quantum relativity principle is outlined. The first task in this theory as in classical relativity theory is to model space-time, the arena of natural processes. It is argued that the quantum space-time models of Banai introduced in an earlier paper is formulated in terms of Davis' quantum relativity. Then it is shown that the recently proposed classical relativistic quantum theory of Prugovecki and his corresponding classical relativistic quantum model of space-time open the way to introduce in a consistent way the quantum space-time model (the 'canonically quantized Minkowski space') proposed by Banai earlier. The main new aspect of the quantum mechanics of the quantum relativistic particles is, in this model of space-time, that it provides a true mass eigenvalue problem and, that the excited mass states of such particles can be interpreted as classifically relativistic (massive) quantum particles ('elementary particles'). The question of field theory over quantum relativistic models of space-time is also discussed. Finally, it is suggested that 'quarks' should be considered as quantum relativistic particles. (author)

Beyond Relation: A Critical Exploration of "Relational Consciousness" for Spiritual Education

Science.gov (United States)

Wills, Ruth

2012-01-01

This paper takes a philosophical view of the spiritual concept "relational consciousness" first proposed by Rebecca Nye in 1998. I will consider the "relational" aspect of spirituality through the ontology of Heidegger and the dialogical relationship "I and Thou" of Martin Buber, examining the problems that contingency and mediation within…

Think Piece: Pioneers as Relational Subjects? Probing Relationality ...

African Journals Online (AJOL)

therefore offers a possible framework for more detailed empirical studies on relationality in collective learning .... pioneers. This idea is also reflected in a book co-authored by Hermansen called Commonities ..... studies. Harvard MS: Harvard.

Rayleigh reciprocity relations: Applications

International Nuclear Information System (INIS)

Lin Ju; Li Xiao-Lei; Wang Ning

2016-01-01

Classical reciprocity relations have wide applications in acoustics, from field representation to generalized optical theorem. In this paper we introduce our recent results on the applications and generalization of classical Rayleigh reciprocity relation: higher derivative reciprocity relations as a generalization of the classical one and a theoretical proof on the Green’s function retrieval from volume noises. (special topic)

Annoying Danish Relatives

DEFF Research Database (Denmark)

Jensen de López, Kristine M.; Sundahl Olsen, Lone; Chondrigianni, V.

2014-01-01

This study examines the comprehension and production of subject and object relative clauses (SRCs, ORCs) by children with Specific Language Impairment (SLI) and their typically developing (TD) peers. The purpose is to investigate whether relative clauses are problematic for Danish children with S...... with the assignment of thematic roles rather than with the structural make-up of RCs....

Correspondences. Equivalence relations

International Nuclear Information System (INIS)

Bouligand, G.M.

1978-03-01

We comment on sections paragraph 3 'Correspondences' and paragraph 6 'Equivalence Relations' in chapter II of 'Elements de mathematique' by N. Bourbaki in order to simplify their comprehension. Paragraph 3 exposes the ideas of a graph, correspondence and map or of function, and their composition laws. We draw attention to the following points: 1) Adopting the convention of writting from left to right, the composition law for two correspondences (A,F,B), (U,G,V) of graphs F, G is written in full generality (A,F,B)o(U,G,V) = (A,FoG,V). It is not therefore assumed that the co-domain B of the first correspondence is identical to the domain U of the second (EII.13 D.7), (1970). 2) The axiom of choice consists of creating the Hilbert terms from the only relations admitting a graph. 3) The statement of the existence theorem of a function h such that f = goh, where f and g are two given maps having the same domain (of definition), is completed if h is more precisely an injection. Paragraph 6 considers the generalisation of equality: First, by 'the equivalence relation associated with a map f of a set E identical to (x is a member of the set E and y is a member of the set E and x:f = y:f). Consequently, every relation R(x,y) which is equivalent to this is an equivalence relation in E (symmetrical, transitive, reflexive); then R admits a graph included in E x E, etc. Secondly, by means of the Hilbert term of a relation R submitted to the equivalence. In this last case, if R(x,y) is separately collectivizing in x and y, theta(x) is not the class of objects equivalent to x for R (EII.47.9), (1970). The interest of bringing together these two subjects, apart from this logical order, resides also in the fact that the theorem mentioned in 3) can be expressed by means of the equivalence relations associated with the functions f and g. The solutions of the examples proposed reveal their simplicity [fr

Personality and Stressor-Related Affect

Science.gov (United States)

Leger, Kate A.; Charles, Susan T.; Turiano, Nicholas A.; Almeida, David M.

2015-01-01

Greater increases in negative affect and greater decreases in positive affect on days stressors occur portend poorer mental and physical health years later. Although personality traits influence stressor-related affect, only neuroticism and extraversion among the Big Five personality traits have been examined in any detail. Moreover, personality traits may shape how people appraise daily stressors, yet few studies have examined how stressor-related appraisals may account for associations between personality and stressor-related affect. Two studies used participants (N=2022, age 30–84) from the National Study of Daily Experiences II (NSDE II) to examine the associations between Big Five personality traits and stressor-related affect, in addition to how appraisals may account for these relationships. Results from Study 1 indicate that higher levels of extraversion, conscientiousness, and openness to experience, and lower levels of neuroticism, are related to less stressor-related negative affect. Only agreeableness was associated with stressor-related positive affect, such that higher levels were related to greater decreases in positive affect on days stressors occur. The second study found that stressor-related appraisals partially accounted for the significant associations between stressor-related negative affect and personality. Implications for these findings in relation to how personality may influence physical and emotional health are discussed. PMID:26796984

THE EFFECT OF THE STATIC RELATIVE STRENGTH ON THE MAXIMUM RELATIVE RECEIVING OF OXYGEN

Directory of Open Access Journals (Sweden)

Abdulla Elezi

2011-09-01

Full Text Available Based on research on the sample of 263 students of age- 18 years, and used batteries of 9 tests for evaluation of the static relative strength and the criterion variable- maximum relative receiving of oxygen (VO2 ml / kg / min based on the Astrand test ,and on regression analysis to determine the influence of the static relative strength on the criterion variable maximum relative oxygen receiving, can be generally concluded that from 9 predictor variables statistically significant partial effect have 2variables. In hierarchical order, they are: the variable of static relative leg strength - endurance of the fingers (the angle of the lower leg and thigh 900 (SRL2 which arithmetic mean is 25.04 seconds and variable ctatic relative strength of arms and shoulders – push-up endurance in the balance beam (angle of the forearm and upper arm 900 ( SRA2 with arithmetic mean of 17.75 seconds. From the statistically influential significant predictor variables on the criterion variable one is from the static relative leg strength (SRL2 and the other is from the static relative strength of arm and shoulder area (SRA2. With the analysis of these relations we can conclude that the isometric contractions of the four headed thigh muscle and the isometric contractions of the three headed upper arm muscle are predominantly responsible for the successful execution of doing actions on a bicycle ergometer and not on the maximum relative receiving of oxygen.

Ether formulations of relativity

International Nuclear Information System (INIS)

Duffy, M.C.

1980-01-01

Contemporary ether theories are surveyed and criticised, especially those formally identical to orthodox Relativity. The historical development of Relativity, Special and General, in terms of an ether, is briefly indicated. Classical interpretations of Generalized Relativity using ether are compared to Euclidean formulations using a background space. The history of a sub-group of theories, formulating a 'new' Relativity involving modified transforms, is outlined. According to the theory with which they agree, recent supposed detections of drift are classified and criticised. Cosmological evidence suggesting an ether is mentioned. Only ether theories formally identical to Relativity have been published in depth. They stand criticised as being contrary to the positivist spirit. The history of mechanical analogues is traced, from Hartley's representing gravitating matter as spherical standing waves, to recent suggestions that vortex-sponge might model electromagnetic, quantum, uncertainty and faster-than-light phenomena. Contemporary theories are particular physical theories, themselves 'second interpretations' of a primary mathematical model. Mechanical analogues are auxiliary, not necessary, to other theory, disclosing relationships between classical and non-classical descriptions of assemblies charging state. The ether-relativity polemic, part of a broader dispute about relativity, is founded on mistaken conceptions of the roles of mathematical and physical models, mechanical analogues; and a distored view of history, which indicates that ether theories have become relativistic. (author)

Research On Websites Of 43 Publıc Relations Agency Members Of Public Relations Society Of Turkey (Tühid) In Aspect Of Public Relations

OpenAIRE

Aydınalp - Ilıcak, Ş. Güzin

2012-01-01

Nowadays public relations studies have entered a more effective process via recent media tools. In this study, the websites of 43 public relations agency members of Public Relations Society of Turkey (TÜHİD) are being evaluated in aspect of public relations. When considered from this point of view, the websites of the agencies in question have been analyzed in terms of company information, communication attempts, media relations, corporate identity, corporate publications and interaction. The...

Epidemiology of terror-related versus non-terror-related traumatic injury in children.

Science.gov (United States)

Aharonson-Daniel, Limor; Waisman, Yehezkel; Dannon, Yehuda L; Peleg, Kobi

2003-10-01

In the past 2 years hundreds of children in Israel have been injured in terrorist attacks. There is a paucity of data on the epidemiology of terror-related trauma in the pediatric population and its effect on the health care system. The objective of this study was to review the accumulated Israeli experience with medical care to young victims of terrorism and to use the knowledge obtained to contribute to the preparedness of medical personnel for future events. Data on all patients who were younger than 18 years and were hospitalized from October 1, 2000, to December 31, 2001, for injuries sustained in a terrorist attack were obtained from the Israel National Trauma Registry. The parameters evaluated were patient age and sex, diagnosis, type, mechanism and severity of injury, interhospital transfer, stay in intensive care unit, duration of hospitalization, and need for rehabilitation. Findings were compared with the general pediatric population hospitalized for non-terror-related trauma within the same time period. During the study period, 138 children were hospitalized for a terror-related injury and 8363 for a non-terror-related injury. The study group was significantly older (mean age: 12.3 years [standard deviation: 5.1] v 6.9 years [standard deviation: 5.3]) and sustained proportionately more penetrating injuries (54% [n = 74] vs 9% [n = 725]). Differences were also noted in the proportion of internal injuries to the torso (11% in the patients with terror-related trauma vs 4% in those with non-terror-related injuries), open wounds to the head (13% vs 6%), and critical injuries (Injury Severity Score of 25+; 25% vs 3%). The study group showed greater use of intensive care unit facilities (33% vs 8% in the comparison group), longer median hospitalization time (5 days vs 2 days), and greater need for rehabilitative care (17% vs 1%). Terror-related injuries are more severe than non-terror-related injuries and increase the demand for acute care in children.

Information in relational data bases

Energy Technology Data Exchange (ETDEWEB)

Abhyankar, R B

1982-01-01

A new knowledge representation scheme is proposed for representing incomplete information in relational data bases. The knowledge representation scheme introduces a novel convention for negative information based on modal logic and a novel data structure obtained by introducing tuple flags in the relational model of data. Standard and minimal forms are defined for relations conforming to the new data structure. The conventional relational operators, select, project and join, the redefined so they can be used to manipulate relations containing incomplete information. Conditions are presented for the lossless decomposition of relations containing incomplete information. 20 references.

CoRE: A context-aware relation extraction method for relation completion

KAUST Repository

Li, Zhixu; Sharaf, Mohamed Abdel Fattah; Sitbon, Laurianne; Du, Xiaoyong; Zhou, Xiaofang

2014-01-01

We identify relation completion (RC) as one recurring problem that is central to the success of novel big data applications such as Entity Reconstruction and Data Enrichment. Given a semantic relation {\\cal R}, RC attempts at linking entity pairs between two entity lists under the relation {\\cal R}. To accomplish the RC goals, we propose to formulate search queries for each query entity \\alpha based on some auxiliary information, so that to detect its target entity \\beta from the set of retrieved documents. For instance, a pattern-based method (PaRE) uses extracted patterns as the auxiliary information in formulating search queries. However, high-quality patterns may decrease the probability of finding suitable target entities. As an alternative, we propose CoRE method that uses context terms learned surrounding the expression of a relation as the auxiliary information in formulating queries. The experimental results based on several real-world web data collections demonstrate that CoRE reaches a much higher accuracy than PaRE for the purpose of RC. © 1989-2012 IEEE.

CoRE: A context-aware relation extraction method for relation completion

KAUST Repository

Li, Zhixu

2014-04-01

We identify relation completion (RC) as one recurring problem that is central to the success of novel big data applications such as Entity Reconstruction and Data Enrichment. Given a semantic relation {\\\\cal R}, RC attempts at linking entity pairs between two entity lists under the relation {\\\\cal R}. To accomplish the RC goals, we propose to formulate search queries for each query entity \\\\alpha based on some auxiliary information, so that to detect its target entity \\\\beta from the set of retrieved documents. For instance, a pattern-based method (PaRE) uses extracted patterns as the auxiliary information in formulating search queries. However, high-quality patterns may decrease the probability of finding suitable target entities. As an alternative, we propose CoRE method that uses context terms learned surrounding the expression of a relation as the auxiliary information in formulating queries. The experimental results based on several real-world web data collections demonstrate that CoRE reaches a much higher accuracy than PaRE for the purpose of RC. © 1989-2012 IEEE.

Dynamics and Relativity

CERN Document Server

Forshaw, Jeffrey

2009-01-01

A new title in the Manchester Physics Series, this introductory text emphasises physical principles behind classical mechanics and relativity. It assumes little in the way of prior knowledge, introducing relevant mathematics and carefully developing it within a physics context. Designed to provide a logical development of the subject, the book is divided into four sections, introductory material on dynamics, and special relativity, which is then followed by more advanced coverage of dynamics and special relativity. Each chapter includes problems ranging in difficulty from simple to challenging with?solutions for solving problems. Includes?solutions for solving problemsNumerous worked examples included throughout the bookMathematics is carefully explained and developed within a physics environmentSensitive to topics that can appear daunting or confusing

Utilizing natural gas huff and puff to enhance production in heavy oil reservoir

Energy Technology Data Exchange (ETDEWEB)

Wenlong, G.; Shuhong, W.; Jian, Z.; Xialin, Z. [Society of Petroleum Engineers, Kuala Lumpur (Malaysia)]|[PetroChina Co. Ltd., Beijing (China); Jinzhong, L.; Xiao, M. [China Univ. of Petroleum, Beijing (China)

2008-10-15

The L Block in the north structural belt of China's Tuha Basin is a super deep heavy oil reservoir. The gas to oil ratio (GOR) is 12 m{sup 3}/m{sup 3} and the initial bubble point pressure is only 4 MPa. The low production can be attributed to high oil viscosity and low flowability. Although steam injection is the most widely method for heavy oil production in China, it is not suitable for the L Block because of its depth. This paper reviewed pilot tests in which the natural gas huff and puff process was used to enhance production in the L Block. Laboratory experiments that included both conventional and unconventional PVT were conducted to determine the physical property of heavy oil saturated by natural gas. The experiments revealed that the heavy oil can entrap the gas for more than several hours because of its high viscosity. A pseudo bubble point pressure exists much lower than the bubble point pressure in manmade foamy oils, which is relative to the depressurization rate. Elastic energy could be maintained in a wider pressure scope than natural depletion without gas injection. A special experimental apparatus that can stimulate the process of gas huff and puff in the reservoir was also introduced. The foamy oil could be seen during the huff and puff experiment. Most of the oil flowed to the producer in a pseudo single phase, which is among the most important mechanisms for enhancing production. A pilot test of a single well demonstrated that the oil production increased from 1 to 2 cubic metres per day to 5 to 6 cubic metres per day via the natural gas huff and puff process. The stable production period which was 5 to 10 days prior to huff and puff, was prolonged to 91 days in the first cycle and 245 days in the second cycle. 10 refs., 1 tab., 12 figs.

Relational topology

CERN Document Server

Schmidt, Gunther

2018-01-01

This book introduces and develops new algebraic methods to work with relations, often conceived as Boolean matrices, and applies them to topology. Although these objects mirror the matrices that appear throughout mathematics, numerics, statistics, engineering, and elsewhere, the methods used to work with them are much less well known. In addition to their purely topological applications, the volume also details how the techniques may be successfully applied to spatial reasoning and to logics of computer science. Topologists will find several familiar concepts presented in a concise and algebraically manipulable form which is far more condensed than usual, but visualized via represented relations and thus readily graspable. This approach also offers the possibility of handling topological problems using proof assistants.

Gaining Relational Competitive Advantages

DEFF Research Database (Denmark)

Hu, Yimei; Zhang, Si; Li, Jizhen

2015-01-01

Establishing strategic technological partnerships (STPs) with foreign partners is an increasingly studied topic within the innovation management literature. Partnering firms can jointly create sources of relational competitive advantage. Chinese firms often lack research and development (R......&D) capabilities but are increasingly becoming preferred technological partners for transnational corporations. We investigate an STP between a Scandinavian and a Chinese firm and try to explore how to gain relational competitive advantage by focusing on its two essential stages: relational rent generation...... and appropriation. Based on an explorative case study, we develop a conceptual framework that consists of process, organizational alliance factors, and coordination modes that we propose lead to relational competitive advantage....

The Historiography of Public Relations in Turkish Public Relations Books

OpenAIRE

KARAASLAN ŞANLI, Halise

2017-01-01

Criticism on the hegemonic history of public relations (PR) paved the way for the emergence of new approaches to the historiography of PR. The most significant of such approaches is the exposure of genuine history of PR for each country, taking into account the specific socioeconomic and cultural context of each country. This study focuses on the handling of the history of PR in Turkish books on public relations published by prominent publishing houses in Turkey between 1967 and 2013. The stu...

Projective relativity, cosmology and gravitation

International Nuclear Information System (INIS)

Arcidiacono, G.

1986-01-01

This book describes the latest applications of projective geometry to cosmology and gravitation. The contents of the book are; the Poincare group and Special Relativity, the thermodynamics and electromagnetism, general relativity, gravitation and cosmology, group theory and models of universe, the special projective relativity, the Fantappie group and Big-Bang cosmology, a new cosmological projective mechanics, the plasma physics and cosmology, the projective magnetohydrodynamics field, projective relativity and waves propagation, the generalizations of the gravitational field, the general projective relativity, the projective gravitational field, the De Sitter Universe and quantum physics, the conformal relativity and Newton gravitation

Numeric Input Relations for Relational Learning with Applications to Community Structure Analysis

DEFF Research Database (Denmark)

Jiang, Jiuchuan; Jaeger, Manfred

2015-01-01

distribution is defined by the model from numerical input variables that are only used for conditioning the distribution of discrete response variables. We show how numerical input relations can very easily be used in the Relational Bayesian Network framework, and that existing inference and learning methods......Most work in the area of statistical relational learning (SRL) is focussed on discrete data, even though a few approaches for hybrid SRL models have been proposed that combine numerical and discrete variables. In this paper we distinguish numerical random variables for which a probability...... use the augmented RBN framework to define probabilistic models for multi-relational (social) networks in which the probability of a link between two nodes depends on numeric latent feature vectors associated with the nodes. A generic learning procedure can be used to obtain a maximum-likelihood fit...

Constructing a psychological coping profile in the call centre environment: Wellness-related dispositions in relation to resiliency-related behavioural capacities

Directory of Open Access Journals (Sweden)

Nisha Harry

2015-08-01

Full Text Available Orientation: The context of this research is the coping and wellness of call centre agents in a characteristically high-stress work environment. Research purpose: The purpose of the study was to construct a psychological coping profile by investigating the overall relationship between individuals’ wellness-related dispositional attributes and their resiliency-related behavioural capacities. Motivation of the study: It is important that coping in the call centre environment be understood in light of the complexity of the challenges that call centre agents experience in terms of their wellbeing. Research design, approach and method: A quantitative cross-sectional survey approach was followed, using a non-probability purposive sample (N = 409 comprising predominantly early career, permanently employed black females in call centres in Africa. Main findings: A canonical correlation analysis indicated a significant overall relationship between the wellness-related constructs (sense of coherence, emotional intelligence and burnout and the resiliency-related constructs (career adaptability and hardiness. Structural equation modelling indicated that managing own emotions and cynicism contributed significantly to explaining the participants’ resiliency-related behavioural capacities (hardicommitment and hardi-control. Practical/managerial implications: Enhancing call centre agents’ emotional intelligence and lowering cynicism will increase resiliency-related capacities, such as sense of control and commitment, and will significantly increase the resiliency and capacity of call centre agents to cope with pressure, which can lead to positive work attitudes. Contribution/value-add: The findings may provide valuable pointers for the design of wellness intervention practices and could potentially add to the body of knowledge concerned with employee wellness in call centres.

New general relativity

International Nuclear Information System (INIS)

Hayashi, K.; Shirafuji, T.

1979-01-01

A gravitational theory is formulated on the Weitzenboeck space-time, characterized by the vanishing curvature tensor (absolute parallelism) and by the torsion tensor formed of four parallel vector fields. This theory is called new general relativity, since Einstein in 1928 first gave its original form. New general relativity has three parameters c 1 , c 2 , and lambda, besides the Einstein constant kappa. In this paper we choose c 1 = 0 = c 2 , leaving open lambda. We prove, among other things, that (i) a static, spherically symmetric gravitational field is given by the Schwarzschild metric, that (ii) in the weak-field approximation an antisymmetric field of zero mass and zero spin exists, besides gravitons, and that (iii) new general relativity agrees with all the experiments so far carried out

The isentropic relation in plasmas

International Nuclear Information System (INIS)

Burm, K T A L

2004-01-01

The isentropic relation from gas dynamics relates pressure, density and temperature. The use of this relation may ease the hydrodynamic modelling effort. Characteristic for the isentropic relation is the constant isentropic exponent. The isentropic exponent is also in the case of plasmas a constant as long as the ionization degree is between 5 and 80%. This constant is lower due to the extra degree of freedom which comes with ionization in plasmas. The occurrence of ionization means that plasmas are never isentropic. The isentropic relation itself is therefore adapted here to include plasmas within its concept. From the plasma isentropic relation a further extension is to include viscosity and heating. It is found that all extra non-isentropic inclusions further lower the (quasi-) isentropic exponent in the adapted isentropic relation

Distortions in Judged Spatial Relations.

Science.gov (United States)

Stevens, Albert

1978-01-01

Distortions in judgments of relative geographical relations were observed, particularly when the locations were in different geographical or political units. Subjects distorted the judged relation to conform with the relation of the superordinate political unit. A model for the hierachical storage of spatial information is presented. (Author/RD)

Perceptions of Public Relations Education.

Science.gov (United States)

Stacks, Don W.; Botan, Carl; Turk, Judy VanSlyke

1999-01-01

Surveys 258 public-relations educators and practitioners, finding they agree that public-relations education is on track; that systematic assessment is an important feature of public-relations education; and that they agreed on how public-relations education should be structured, and demonstrated a high degree of similarity in their preferences…

Relativity theory - topical

International Nuclear Information System (INIS)

Schmutzer, E.

1979-01-01

Issued on the occasion of Albert Einstein's 100th birthday the book deals topically with the special and general relativity theory. The latest experiments to confirm the relativity theory are described and the historical development of the theory is presented in detail. Emphasis is given to the disclosure of deep insights into the nature of matter. Of interest to experts in physical and natural sciences and to mathematicians

Organization, relational justice and absenteeism.

Science.gov (United States)

Stoetzer, Ulrich; Åborg, Carl; Johansson, Gun; Svartengren, Magnus

2014-01-01

There is a need for more knowledge on how to manage companies towards healthier and more prosperous organizations with low levels of absenteeism. Relational Justice can be a useful concept when managing such organizations. Organizational factors can help to explain why some companies have relatively low absenteeism rates, even though they are equal to other companies in many other aspects. Previous studies suggest that management may be one important factor. Efficient management may depend on good relations between the leaders and the employees. The concept of Relational Justice is designed to capture these relations. Consequently, a Relational Justice framework may be used to understand why some companies have a low incidence of absenteeism. Managers from a representative body of Swedish companies. Interviews were analyzed to explore whether the items representing the concept of Relational Justice can be used to further understand the strategies, procedures and structures that characterize organizations and management in companies with a low incidence of absenteeism. Strategies, procedures or principles related to Relational Justice were common and highlighted in companies with an incidence of absenteeism. The most frequently occurring factors were; to be treated with kindness and consideration, personal viewpoint considered and to be treated impartially. The results suggested that a Relational Justice framework could be used to increase understanding of the organizational and managerial factors typical for companies with a low incidence of absenteeism. A Relational Justice approach to organizational management may be used to successfully lower absenteeism, change organizations and promote healthy and prosperous companies.

Granular-relational data mining how to mine relational data in the paradigm of granular computing ?

CERN Document Server

Hońko, Piotr

2017-01-01

This book provides two general granular computing approaches to mining relational data, the first of which uses abstract descriptions of relational objects to build their granular representation, while the second extends existing granular data mining solutions to a relational case. Both approaches make it possible to perform and improve popular data mining tasks such as classification, clustering, and association discovery. How can different relational data mining tasks best be unified? How can the construction process of relational patterns be simplified? How can richer knowledge from relational data be discovered? All these questions can be answered in the same way: by mining relational data in the paradigm of granular computing! This book will allow readers with previous experience in the field of relational data mining to discover the many benefits of its granular perspective. In turn, those readers familiar with the paradigm of granular computing will find valuable insights on its application to mining r...

Public Relations and Interpersonal Communication.

Science.gov (United States)

Lance, Elizabeth P.

Despite a lack of consensus on theoretical perspectives on public relations and variations in the ways it and interpersonal communication are defined, public relations may be related to interpersonal communication in three ways: (1) it is two-way communication, (2) it is personal, and (3) it is relational. Even in activities having the highest…

Advanced mechanics and general relativity an introduction to general relativity

CERN Document Server

Franklin, Joel

2010-01-01

Aimed at advanced undergraduates with background knowledge of classical mechanics and electricity and magnetism, this textbook presents both the particle dynamics relevant to general relativity, and the field dynamics necessary to understand the theory. Focusing on action extremization, the book develops the structure and predictions of general relativity by analogy with familiar physical systems. Topics ranging from classical field theory to minimal surfaces and relativistic strings are covered in a homogeneous manner. Nearly 150 exercises and numerous examples throughout the textbook enable students to test their understanding of the material covered.

Measuring the relative importance of strategic thinking dimensions in relation to counterproductive behavior

Directory of Open Access Journals (Sweden)

Afsaneh Zamani Moghaddam

2013-11-01

Full Text Available The purpose of this paper is to explore the relative importance of strategic thinking dimensions in prediction of counter-productive behavior. The research method is based on a descriptive- Survey research. After collecting the questionnaires from 73 top managers and 110 staffs, the correlations between strategic thinking dimensions and counterproductive behavior were calculated. The relative importance method was used to calculate the relative weight of each dimension of strategic thinking in prediction of counterproductive behaviors. The results show that the strategic thinking of top managers is associated with their counterproductive behavior (correlation coefficient -0.38. Furthermore, The results of the Relative Importance Method indicate that the relative importance of each dimension of strategic thinking in prediction of counterproductive behavior is not the same. System perspective with 31.1% has the highest importance and hypothesis driven with 11.7% has the lowest weight. Intent focus, thinking in time and intelligent opportunism predict 14.1%, 13.3%, and 29.8% of counter-productive changes, respectively.

Relations Between Parental Psychological Control and Childhood Relational Aggression : Reciprocal in Nature?

NARCIS (Netherlands)

Kuppens, Sofie; Grietens, Hans; Onghena, Patrick; Michiels, Daisy

2009-01-01

Using a cross-lagged panel design, this study examined the directionality of relations between parental psychological control and child relational aggression. Data were collected from a proportionally stratified sample of 600 Flemish 8- to 10-year-old children at 3 measurement points with 1-year

Global general relativity

International Nuclear Information System (INIS)

Penrose, R.

1979-01-01

Much theoretical work in General Relativity has been concerned with finding explicit solutions of Einstein field equations. Exact solutions must involve simplifying procedures which in the case of strong gravitational fields may not be valid. Computers can help but complementary to these are the global qualitative mathematics that have been introduced into relativity over the past years. These have shown that Einstein's equations together with suitable inequalities on the energy-momentum tensor can lead inevitably to space-time singularities arising, provided that some qualitative geometric criterion is satisfied. It seems that in suitable situations of gravitational collapse this criterion will be satisfied. Similarly in a cosmological setting the criterion can be applied in the reverse direction in time. There is, however, the unsolved problem in general relativity of cosmic censorship and this is discussed as a consequence of Einstein's equations. (UK)

Relation of depression and anxiety to self- and peer-reported relational aggression.

Science.gov (United States)

Zimmer-Gembeck, Melanie J; Pronk, Rhiarne E

2012-01-01

The primary purpose of this multimethod and multimeasure study was to identify how the peer relationships of Australian adolescents (ages 9-15 years; N = 335) at school, including relational aggression and victimization, correlated with their symptoms of depression and anxiety. Moreover, relational aggression and victimization were measured via both self- and peer report, and discrepancies between reports were considered as correlates of symptoms and peer relationship status. Adolescents who reported more symptoms of depression and anxiety also self-reported more relational victimization and reported their peers as less trustworthy. Adolescents who overreported their own relational victimization and aggression compared with peer report had more symptoms compared with those who agreed with their peers or underreported their aggression and victimization. Adolescents who underreported their own aggression were not only more socially prominent but were also more disliked by their peers. When considered independent of self-reports, no measure of peer-reported peer status, aggression, or victimization was associated with depressive symptoms; but adolescents reported as more accepted by their peers had fewer anxiety symptoms. Longitudinal research should be conducted to examine adolescents' increasing socioemotional problems as correlates of discrepancies between self- and peer reports of relational aggression and victimization. © 2011 Wiley Periodicals, Inc.

Relativity. The theory and its philosophy

International Nuclear Information System (INIS)

Angel, R.B.

1980-01-01

An attempt is made to provide a completely self-contained treatment of the philosophical foundations of the theory of relativity. The chapter headings are: mathematical preliminaries; relativity and Newtonian mechanics; the principle of special relativity; empiricism, rationalism and special relativity; special relativity and conventionalism; the commensurability of classical and relativistic mechanics; more mathematics; the path to general relativity; an outline of general relativity; relativity and covariance; spacetime and geometry. (U.K.)

BOOK REVIEW An Introduction to Relativity An Introduction to Relativity

Science.gov (United States)

Dray, Tevian

2011-02-01

As is clearly stated in the preface, this book is a fresh rewrite of Narlikar's published lecture notes [1] from 1978, resulting in a unique historical perspective with a modernized presentation. For workers in the field, this book provides a fascinating glimpse of the state of the art 30 years ago, but there are some inevitable idiosyncracies which might make it less useful to the beginner, especially those attempting to read this book on their own. The author is well-known for his informal, readable style, and this book is no exception. Although the treatment is overly algebraic from this reviewer's modern perspective, that is not necessarily a drawback, and does accurately reflect contemporary usage. This text is a `math first' approach to relativity, presenting the tensor calculus first, and the physics second. Not surprisingly given the author's interests, there is an emphasis on cosmological applications. After a quick review of special relativity, the book jumps right in with a fairly standard introduction to tensor calculus, followed almost immediately by chapters on Einstein's equations, the Schwarzschild solution, experimental tests, relativistic astrophysics, and black holes, followed in turn by several chapters on cosmology. This new text is a faithful adaptation of the earlier text, with essentially identical tables of contents. In fact, the only notable differences are the opening chapter summarizing special relativity, a brief new chapter on gravitational radiation, and the exclusion of a lecture on the Steady State Theory — and that material appears separately in the author's cosmology text [2]. Some of the material, such as the excellent chapter on symmetries, is largely identical to the original, but most of the material has been extensively rewritten, with most of the changes being to presentation, rather than content. There are some seldom seen gems in this book, such as the aforementioned discussion of symmetries, the extensive discussion of

Rhetorical relations for information retrieval

DEFF Research Database (Denmark)

Lioma, Christina; Larsen, Birger; Lu, Wei

2012-01-01

-called discourse structure has been applied successfully to several natural language processing tasks. This work studies the use of rhetorical relations for Information Retrieval (IR): Is there a correlation between certain rhetorical relations and retrieval performance? Can knowledge about a document’s rhetorical...... relations be useful to IR? We present a language model modification that considers rhetorical relations when estimating the relevance of a document to a query. Empirical evaluation of different versions of our model on TREC settings shows that certain rhetorical relations can benefit retrieval effectiveness...

[Historical causality and relative contemporaneity Einsteinian relativity in the historical sciences].

Science.gov (United States)

Bontems, Vincent

2014-01-01

The construction of historical frame of reference based on the distinction between and articulation of phenomenological and chronological times. As it relativises the notion of simultaneity and inverts its relation to causality, the special theory of relativity can induce analogous modes of reflection on the themes of "contemporaneity" in the history of art (Panofsky) and in epistemology (Bachelard). This "relativist" method, often misunderstood, sheds light on both historical and presentist methods.

International Relations:

DEFF Research Database (Denmark)

This is the textbook for the Open University module International Relations: Continuity and Change in Global Politics. Instead of leading with a succession of theoretical 'isms', the module structures its presentation of the subject around six teaching ‘blocks’, each of which explores a dilemma...... • Block 6: Continuity or change in global politics? Each block introduces new IR theories through discussions of the substantive dilemmas and adds in a layered way levels of analysis and conceptual complexity......., or dimension of variation. The dilemmas in question were chosen for the way they capture key themes in the field of International Studies (IR) as well as central aspects of the ‘international’ itself (ir). The six Blocks are: • Block 1: Co-operation or conflict? Introducing international relations • Block 2...

Strategi Komunikasi Public Relations

OpenAIRE

Artis, Artis

2011-01-01

Living man in interrelates society. Relationship among human being done by gets communication so man one by another one mutually understand and influence regard for the benefit, it that always been practiced by Public Relations( liaison) in a governance and also firm institute to reach to the effect which ices. The institute of Public Relations declares for,”Public Relations is overall effort which be passed off by design and berkesenambungan in order to creates and pet keenness and mutual un...

To understand relativity. 4. ed.

International Nuclear Information System (INIS)

Berthon, M.E.

1995-01-01

This book comprises three parts: the first one is about the restricted relativity theory with ten chapters which are from Galilee to Newton, tools of classical physics, relativity principle, a dreadful child: light, Michelson experience, the restricted relativity and Einstein postulates (1905), Lorentz transformation, relativistic kinematics, Minkowski time-space, and the relativistic dynamics; the second part concerns the general relativity and the gravitation, from chapter 11 to chapter 19, which are towards the general relativity, absolute acceleration has no sense, the equivalence principle, the principle of generalised relativity, the gravitation and the problems that it formulates, non euclidean theory of the gravitation field, the theory of 1915, Gauss coordinates, classical tests of general relativity; in the last and third part are studied the cosmologies with three chapters, the chapter 20 is dedicated to cosmological principle precursors, the chapter 21 is about the modern cosmological models and the last one finishes on that question: universe is it or not finished. (N.C.). 26 refs., 48 figs., 9 appends

Managing or Relating?

DEFF Research Database (Denmark)

Sproedt, Henrik; Buur, Jacob

2010-01-01

This paper describes a case of user-driven innovation. We draw on social capital theory and the concept of complex responsive processes to examine the role of relations for the exchange and generation of knowledge across different knowledge traditions. We argue that innovation as a social phenome...... phenomenon with a high degree of uncertainty and complexity requires more relating and less managing to use conflict as a resource by turning the friction between different knowledge traditions into creative friction....

The effects of attention on age-related relational memory deficits: Evidence from a novel attentional manipulation

Science.gov (United States)

Kim, So-Yeon; Giovanello, Kelly S.

2011-01-01

Healthy aging is often accompanied by episodic memory decline. Prior studies have consistently demonstrated that older adults show disproportionate deficits in relational memory (RM) relative to item memory (IM). Despite rich evidence of an age-related RM deficit, the source of this deficit remains unspecified. One of the most widely investigated factors of age-related RM impairment is a reduction in attentional resources. However, no prior studies have demonstrated that reduced attentional resources are the critical source of age-related RM deficits. Here, we utilized qualitatively different attention tasks, and tested whether reduced attention for relational processing underlies the RM deficit observed in aging. In Experiment 1, we imposed either item-detection or relation-detection attention tasks on young adults during episodic memory encoding, and found that only the concurrent attention task involving relational processing disproportionately impaired RM performance in young adults. Moreover, by ruling out the possible confound of task-difficulty on the disproportionate RM impairment, we further demonstrated that reduced relational attention is a key factor for the age-related RM deficit. In Experiment 2, we replicated the results from Experiment 1 using different materials of stimuli and found that the effect of relational attention on RM is material-general. The results of Experiment 2 also showed that reducing attentional resources for relational processing in young adults strikingly equated their RM performance to that of older adults. Thus, the current study documents the first evidence that reduced attentional resources for relational processing are a critical factor for the relational memory impairment observed in aging. PMID:21707178

Elementary general relativity

International Nuclear Information System (INIS)

Clarke, C.

1979-01-01

The plan of the book is as follows: Chapter 1 develops special relativity in a setting and notation that can immediately be transferred to general relativity. Most of the fundamental geometrical ideas are established here. Chapter 2 gives a more conventional account of some selected applications of special relativity. Chapter 3 is the heart of the book. A geometrical model of space-time is progressively built up, motivated by physical arguments stemming from the equivalence principle, leading to Einstein's field equations. Chapter 4 deals very quickly with the simplest form of weak-field theory with application to gravitational radiation. Chapter 5 concludes the book with a fairly detailed analysis of the Schwarzschild solution, plane fronted gravitational waves, and the Robertson-Walker cosmological solutions. Exercises at the end of each chapter extend the general theory into particular applications, giving a broader picture of the scope of the subject. (author)

Perceived Sexual Control, Sex-Related Alcohol Expectancies and Behavior Predict Substance-Related Sexual Revictimization

Science.gov (United States)

Walsh, Kate; Messman-Moore, Terri; Zerubavel, Noga; Chandley, Rachel B.; DeNardi, Kathleen A.; Walker, Dave P.

2013-01-01

Objectives Although numerous studies have documented linkages between childhood sexual abuse (CSA) and later sexual revictimization, mechanisms underlying revictimization, particularly assaults occurring in the context of substance use, are not well-understood. Consistent with Traumagenic Dynamics theory, the present study tested a path model positing that lowered perceptions of sexual control resulting from CSA may be associated with increased sex-related alcohol expectancies and heightened likelihood of risky sexual behavior, which in turn, may predict adult substance-related rape. Methods Participants were 546 female college students who completed anonymous surveys regarding CSA and adult rape, perceptions of sexual control, sex-related alcohol expectancies, and likelihood of engaging in risky sexual behavior. Results The data fit the hypothesized model well and all hypothesized path coefficients were significant and in the expected directions. As expected, sex-related alcohol expectancies and likelihood of risky sexual behavior only predicted substance-related rape, not forcible rape. Conclusions Findings suggested that low perceived sexual control stemming from CSA is associated with increased sex-related alcohol expectancies and a higher likelihood of engaging in sexual behavior in the context of alcohol use. In turn these proximal risk factors heighten vulnerability to substance-related rape. Programs which aim to reduce risk for substance-related rape could be improved by addressing expectancies and motivations for risky sexual behavior in the context of substance use. Implications and future directions are discussed. PMID:23312991

Relations between Parental Psychological Control and Childhood Relational Aggression: Reciprocal in Nature?

Science.gov (United States)

Kuppens, Sofie; Grietens, Hans; Onghena, Patrick; Michiels, Daisy

2009-01-01

Using a cross-lagged panel design, this study examined the directionality of relations between parental psychological control and child relational aggression. Data were collected from a proportionally stratified sample of 600 Flemish 8- to 10-year-old children at 3 measurement points with 1-year intervals. Reciprocal effects were evident in…

Relative energy for the Korteweg theory and related Hamiltonian flows in gas dynamics

KAUST Repository

Giesselmann, Jan

2016-10-26

For an Euler system, with dynamics generated by a potential energy functional, we propose a functional format for the relative energy and derive a relative energy identity. The latter, when applied to specific energies, yields relative energy identities for the Euler-Korteweg, the Euler-Poisson, the Quantum Hydrodynamics system, and low order approximations of the Euler-Korteweg system. For the Euler-Korteweg system we prove a stability theorem between a weak and a strong solution and an associated weak-strong uniqueness theorem. In the second part we focus on the Navier-Stokes-Korteweg system (NSK) with non-monotone pressure laws: we prove stability for the NSK system via a modified relative energy approach. We prove continuous dependence of solutions on initial data and convergence of solutions of a low order model to solutions of the NSK system. The last two results provide physically meaningful examples of how higher order regularization terms enable the use of the relative energy framework for models with energies which are not poly- or quasi-convex, but compensating via higher-order gradients.

A lower bound on the relative error of mixed-state cloning and related operations

International Nuclear Information System (INIS)

Rastegin, A E

2003-01-01

We extend the concept of the relative error to mixed-state cloning and related physical operations, in which the ancilla contains some information a priori about the input state. The lower bound on the relative error is obtained. It is shown that this result provides further support for a stronger no-cloning theorem

Public Relations between Occupation and Profession – Attempts at Regulating Public Relations

Directory of Open Access Journals (Sweden)

Božo Skoko

2012-06-01

Full Text Available This paper is concerned with the regulation and the professionalization of occupations in public relations. It analyzes the role of professional, national associations in the professionalization process, providing an overview of these organizations in various countries around the world. The authors identify countries with no regulation (for instance, Italy, countries with some legal regulations (for instance, Brazil and countries that have adopted self-regulation models (for instance, USA and South Africa. The authors point out the advantages and drawbacks of each regulation model and their impact on the development and professionalization of the occupation. Namely, in countries in which public relations are defined by law, public relations experts have guaranteed positions in society; however, they enjoy a negative public perception. In self-regulatory models, a significant number of experts are not covered by membership in organizations. Consequently, their behavior is not governed by any set of established professional obligations. Furthermore, countries with no clear professional regulation have enabled mass engagement in public relations; however, there are no criteria for professional advancement and affirmation. The issue of regulation in transition countries has shown itself to be a relatively unarticulated concept that can be expected to acquire greater definition with further professionalization of the occupation, a key role that must be played by professional associations.

Theoretical general relativity: 1979

International Nuclear Information System (INIS)

Bergmann, O.

1979-01-01

The metric and field equations of Einstein's general relativity theory are written down. Solutions to the equations are discussed. Connection is made between relativity theory and elementary particle theory. Possibilities for a unified field theory are considered

Age-related hearing loss

Science.gov (United States)

... grow older. Your genes and loud noise (from rock concerts or music headphones) may play a large role. The following factors contribute to age-related hearing loss: Family history (age-related hearing loss tends to run in ...

Cooper pairs versus Bose condensed molecules: The ground-state current in superfluid 3He-A

International Nuclear Information System (INIS)

Mermin, N.D.; Muzikar, P.

1980-01-01

We present a new calculation of the current g flowing in a ground state of the Bardeen-Cooper-Schrieffer (BCS) form for a weakly inhomogeneous superfluid with the symmetry of 3 He-A. When the structure of the order parameter not determined by symmetry is appropriate to 3 He-A and when the mass density rho of the helium is essentially uniform, our current reduces to that calculated by Cross. If the mass density is allowed to vary, we find a generalization of the Cross current which shows that when v/sub s/=0 and the anisotropy axis l is uniform, then the current is simply (h/4M) del-arrow-rightrho x l. We show that this property of the BCS ground state, which taken with the Cross definition leads to an ''intrinsic angular momentum density'' of rhoh/2M at zero temperature, also follows directly from the Gor'kov equations. If the range of the order parameter is taken to be small compared with the interatomic separation, then the ground state does not describe 3 He-A, but a Bose-Einstein condensate of tightly bound diatomic molecules. In this limit our current reduces to the form calculated by Ishikawa et al. We indicate why their analysis is only valid in this limit, and offer some rather more general remarks on the differences between Cooper pairing and the Bose-Einstein condensation of diatomic molecules

A hybrid biocatalyst consisting of silver nanoparticle and naphthalenethiol self-assembled monolayer prepared for anchoring glucose oxidase and its use for an enzymatic biofuel cell

Science.gov (United States)

Christwardana, Marcelinus; Kim, Do-Heyoung; Chung, Yongjin; Kwon, Yongchai

2018-01-01

A novel hybrid biocatalyst is synthesized by the enzyme composite consisting of silver nanoparticle (AgNP), naphthalene-thiol based couplers (Naph-SH) and glucose oxidase (GOx), which is then bonded with the supporter consisting of polyethyleneimine (PEI) and carbon nanotube (CNT) (CNT/PEI/AgNPs/Naph-SH/GOx) to facilitate glucose oxidation reaction (GOR). Here, the AgNPs play a role in obstructing denaturation of the GOx molecules from the supporter because of Ag-thiol bond, while the PEIs have the AgNPs keep their states without getting ionized by hydrogen peroxide produced during anodic reaction. The Naph-SHs also prevent ionization of the AgNP by forming self-assembled monolayer on their surface. Such roles of each component enable the catalyst to form (i) hydrophobic interaction between the GOx molecules and supporter and (ii) π-conjugated electron pathway between the GOx molecules and AgNP, promoting electron transfer. Catalytic nature of the catalyst is characterized by measuring catalytic activity and performance of enzymatic biofuel cell (EBC) using the catalyst. Regarding the catalytic activity, the catalyst leads to high electron transfer rate constant (9.6 ± 0.4 s-1), low Michaelis-Menten constant (0.51 ± 0.04 mM), and low charge transfer resistance (7.3 Ω cm2) and high amount of immobilized GOx (54.6%), while regarding the EBC performance, high maximum power density (1.46 ± 0.07 mW cm-2) with superior long-term stability result are observed.

Dual origin of pairing in nuclei

Science.gov (United States)

Idini, A.; Potel, G.; Barranco, F.; Vigezzi, E.; Broglia, R. A.

2016-11-01

The pairing correlations of the nucleus 120Sn are calculated by solving the Nambu-Gor'kov equations, including medium polarization effects resulting from the interweaving of quasiparticles, spin and density vibrations, taking into account, within the framework of nuclear field theory (NFT), processes leading to self-energy and vertex corrections and to the induced pairing interaction. From these results one can not only demonstrate the inevitability of the dual origin of pairing in nuclei, but also extract information which can be used at profit to quantitatively disentangle the contributions to the pairing gap Δ arising from the bare and from the induced pairing interaction. The first is the strong 1 S 0 short-range NN potential resulting from meson exchange between nucleons moving in time reversal states within an energy range of hundreds of MeV from the Fermi energy. The second results from the exchange of vibrational modes between nucleons moving within few MeV from the Fermi energy. Short- ( v p bare) and long-range ( v p ind) pairing interactions contribute essentially equally to nuclear Cooper pair stability. That is to the breaking of gauge invariance in open-shell superfluid nuclei and thus to the order parameter, namely to the ground state expectation value of the pair creation operator. In other words, to the emergent property of generalized rigidity in gauge space, and associated rotational bands and Cooper pair tunneling between members of these bands.

Resources for Public Relations Teaching: Facilitating the Growth of Public Relations Education.

Science.gov (United States)

Coombs, Timothy

2001-01-01

Discusses briefly events (including a 1998 summer conference, a report, and a 1999 Pre-Conference) leading up to this themed issue on public relations teaching. Introduces the seven remaining articles in the issue which represent six different content areas to be covered in a public relations curriculum, and which reflects recommendations for…

The theories of relativity

International Nuclear Information System (INIS)

Deruelle, N.; Uzan, J.P.

2014-01-01

This book is a quite complete route towards general relativity via special relativity with a start point at Newton's mechanics. The mathematical formulation is based on tensors. All the relativistic aspects of only classical physics - it means no quantum mechanics - are exposed. This book is divided into 3 books and each book represents a consistent knowledge of physics at a certain time in the past: in Newton's time, in the second half of the 19. century and today. The advantage of this presentation is to make the reader feels the changes over time in the concepts of time, space, gravity, cosmology. Each book is divided into 3, 4 and 5 parts which are sub-divided into numerous chapters. Book 1: Space, time and gravity in Newton's theory, with part 1: kinematics, part 2: dynamics and part 3: gravity. Book 2: Special relativity and Maxwell's theory, with part 1: kinematics, part 2: dynamics, part 3: electromagnetism and part 4: electrodynamics. And Book 3: General relativity and gravity, with part 1: curved space-time and gravity, part 2: Schwarzschild solution and black holes, part 3: general relativity and experiments, part 4: Friedman-Lemaitre solutions and cosmology, and part 5: elements or Riemann geometry. The 3. book dedicated to general relativity, tackles topics like the relationships between space-time curvature and gravity, Schwarzschild solutions and black holes, gravitational waves, Friedmann-Lemaitre solutions and cosmology, and Riemann geometry. (A.C.)

INTERPERSONAL RELATIONS IN SCHOOL

Directory of Open Access Journals (Sweden)

Siniša Opić

2016-12-01

Full Text Available As part of the scientific project titled “The Curriculum of Social Competences and Relations in School”, the aim of this paper is to examine the quality of interpersonal relations between teachers and pupils. On a sample of 432 teachers from 20 towns, 35 primary schools in the Republic of Croatia, and 432 pupils, it was confirmed that there is a difference in the appraisal of the quality of their interpersonal relations. Although the overall quality of interpersonal relations between pupils and teachers is at a moderately satisfactory level, pupils still appraise the quality of interpersonal relations lower than their teachers. In view of latent dimensionality, a factor questionnaire structure was used (14 variables; ordinal type and two main components (subscales determined: didactic support and interaction, and rough verbal and physical treatment. As part of the differential draft of our research, no gender differences were established (between female and male teachers in the appraisal of the quality of interpersonal relations with pupils (on two subscales. The correlation analysis confirmed a low negative statistically significant correlation between the years of service and the subscale rough verbal and physical treatment (Rho=-0.101. In view of the subscale of rough verbal and physical treatment between pupils and teachers, such results on a negative correlation imply that older teachers, as opposed to their younger colleagues, use more corporal punishment in schools, treat pupils rudely, use nasty and impolite words, and call pupils insulting names.

The universal relation of galactic chemical evolution: the origin of the mass-metallicity relation

International Nuclear Information System (INIS)

Zahid, H. Jabran; Dima, Gabriel I.; Kudritzki, Rolf-Peter; Kewley, Lisa J.; Geller, Margaret J.; Hwang, Ho Seong; Silverman, John D.; Kashino, Daichi

2014-01-01

We examine the mass-metallicity relation for z ≲ 1.6. The mass-metallicity relation follows a steep slope with a turnover, or 'knee', at stellar masses around 10 10 M ☉ . At stellar masses higher than the characteristic turnover mass, the mass-metallicity relation flattens as metallicities begin to saturate. We show that the redshift evolution of the mass-metallicity relation depends only on the evolution of the characteristic turnover mass. The relationship between metallicity and the stellar mass normalized to the characteristic turnover mass is independent of redshift. We find that the redshift-independent slope of the mass-metallicity relation is set by the slope of the relationship between gas mass and stellar mass. The turnover in the mass-metallicity relation occurs when the gas-phase oxygen abundance is high enough that the amount of oxygen locked up in low-mass stars is an appreciable fraction of the amount of oxygen produced by massive stars. The characteristic turnover mass is the stellar mass, where the stellar-to-gas mass ratio is unity. Numerical modeling suggests that the relationship between metallicity and the stellar-to-gas mass ratio is a redshift-independent, universal relationship followed by all galaxies as they evolve. The mass-metallicity relation originates from this more fundamental universal relationship between metallicity and the stellar-to-gas mass ratio. We test the validity of this universal metallicity relation in local galaxies where stellar mass, metallicity, and gas mass measurements are available. The data are consistent with a universal metallicity relation. We derive an equation for estimating the hydrogen gas mass from measurements of stellar mass and metallicity valid for z ≲ 1.6 and predict the cosmological evolution of galactic gas masses.

Researcher/Researched: Relations of Vulnerability/Relations of Power

Science.gov (United States)

Huckaby, M. Francyne

2011-01-01

Turning to reflexive journals and fieldnotes, the author reconsiders Foucault's "relations of power" through her experiences with five research participants, who are professors of education. The paper explores: (1) the translation of Foucault for an analysis of power; (2) the dynamics of researching up and analyzing from below; and (3) the…

Semantic Relations between Legal Terms. A Case Study of the Intralingual Relation of Synonymy

Directory of Open Access Journals (Sweden)

Matulewska Aleksandra

2016-06-01

Full Text Available The author intends to present a possibility of parametrising legal terminology in order to reveal semantic and systemic relations at the intralingual and interlingual levels. The scope of the research comprises selected legal terminology from the following legal systems: Polish, British, American and European Union. The research methods used include: (i the analysis of comparable texts, (ii the method of parametrisation of the legal linguistic reality, (iii the concept of adjusting translation to the communicative needs and requirements of the recipient community. The research hypothesis is that parametrisation of legal terminology in respect of semantic and systemic relations may be a useful tool in organising and comparing terminology for the purpose of legal translation. First the relation of synonymy binding terms at the intralingual and interlingual levels in the light of systemic and genre-related relations is discussed. The proposal is illustrated with examples of legal terms and the networks of relations binding them in English and Polish. The conclusions are that such an approach is systematic and provides a translator with information necessary to render communicatively efficient translations.

Treatment, material, care, and patient-related factors in contact lens-related dry eye.

Science.gov (United States)

Ramamoorthy, Padmapriya; Sinnott, Loraine T; Nichols, Jason J

2008-08-01

To examine the effect of general contact lens and material characteristics, care solutions, treatment, and patient-related factors on contact lens-related dry eye. The data were derived from the Contact Lens and Dry Eye Study, designed as a cross-sectional and nested case-control study including 360 subjects. In separate statistical models, logistic regression was used to examine general contact lens characteristics, specific hydrogel lens materials, care solutions, and patient-related factors associated with dry eye status (controlled for age, gender, and current treatments). Several factors were significantly associated with dry eye, including treatment factors such as a recent contact lens refitting (odds ratios [OR] = 5.75, 95% confidence intervals [CI] = 2.14 to 15.46) and use of artificial tears/rewetting drops (OR = 1.09, 95% CI = 1.02 to 1.16), in addition, currently worn materials including Food and Drug Administration (FDA) group II (OR = 2.98, 95% CI = 1.14 to 6.19) and IV (OR = 1.87, 95% CI = 1.08 to 3.24). Significant patient-related factors included decreased overall satisfaction (OR = 3.57, 95% CI = 2.08 to 5.88,), dry eye in the absence of contact lens wear (OR = 6.54, 95% CI = 2.57 to 16.62), reduced daily lens wear duration (OR = 1.16, 95% CI = 1.06 to 1.26), and reduced ability to wear lenses as long as desired (OR = 2.44, 95% CI = 1.30 to 4.54). Care solutions were not associated with contact lens-related dry eye. The strong association of common treatment factors with dry eye status in contact lens wearers suggests that these treatments are not entirely effective. The use of high water content materials was strongly related to dry eye in lens wearers, whereas care solutions were not. Contact lens-related dry eye was also associated with several patient-related factors such as greater ocular discomfort (without lenses), dissatisfaction, and inability to wear lenses for desired durations.

Improved Garvey-Kelson Relations

International Nuclear Information System (INIS)

Collis, W. J. F.; Vinko, J. D.; Tripodi, P.

2009-01-01

In this paper we develop improved methods of estimating atomic weights and ground state binding energies, similar to the local relations of Garvey-Kelson formulae. We show (Fig. 1) that both the longitudinal (GKL) and transverse(GKT) Garvey-Kelson relations[2] can be derived mathematically from a simpler relationship between 4 nuclides (C1). This base can be used in turn to construct more accurate relations to predict the properties of nuclei far from stability. Historically, the Garvey Kelson local relations appear to be one of the most accurate estimators of atomic mass. However their utility is limited by progressive loss of accuracy in the prediction of nuclei far from stability where it may also be impossible to find the appropriate neighbours. The scheme presented in this paper requires the known masses of only 3 neighbours and is more accurate.(author)

42 CFR 433.57 - General rules regarding revenues from provider-related donations and health care-related taxes.

Science.gov (United States)

2010-10-01

...-related donations and health care-related taxes. 433.57 Section 433.57 Public Health CENTERS FOR MEDICARE... rules regarding revenues from provider-related donations and health care-related taxes. Effective... FFP, funds from provider-related donations and revenues generated by health care-related taxes...

Facilitating relational framing in children and individuals with developmental delay using the relational completion procedure.

Science.gov (United States)

Walsh, Sinead; Horgan, Jennifer; May, Richard J; Dymond, Simon; Whelan, Robert

2014-01-01

The Relational Completion Procedure is effective for establishing same, opposite and comparative derived relations in verbally able adults, but to date it has not been used to establish relational frames in young children or those with developmental delay. In Experiment 1, the Relational Completion Procedure was used with the goal of establishing two 3-member sameness networks in nine individuals with Autism Spectrum Disorder (eight with language delay). A multiple exemplar intervention was employed to facilitate derived relational responding when required. Seven of nine participants in Experiment 1 passed tests for derived relations. In Experiment 2, eight participants (all of whom, except one, had a verbal repertoire) were given training with the aim of establishing two 4-member sameness networks. Three of these participants were typically developing young children aged between 5 and 6 years old, all of whom demonstrated derived relations, as did four of the five participants with developmental delay. These data demonstrate that it is possible to reliably establish derived relations in young children and those with developmental delay using an automated procedure. © Society for the Experimental Analysis of Behavior.

Contact Lens-Related Eye Infections

Science.gov (United States)

... Español Eye Health / Eye Health A-Z Contact Lens-Related Eye Infections Sections Contact Lens-Related Eye ... Six Steps to Avoid Contact Lens Infections Contact Lens-Related Eye Infections Leer en Español: Infecciones relacionadas ...

Relational Architecture

DEFF Research Database (Denmark)

Reeh, Henrik

2018-01-01

in a scholarly institution (element #3), as well as the certified PhD scholar (element #4) and the architectural profession, notably its labour market (element #5). This first layer outlines the contemporary context which allows architectural research to take place in a dynamic relationship to doctoral education...... a human and institutional development going on since around 1990 when the present PhD institution was first implemented in Denmark. To be sure, the model is centred around the PhD dissertation (element #1). But it involves four more components: the PhD candidate (element #2), his or her supervisor...... and interrelated fields in which history, place, and sound come to emphasize architecture’s relational qualities rather than the apparent three-dimensional solidity of constructed space. A third layer of relational architecture is at stake in the professional experiences after the defence of the authors...

The neuromechanism underlying verbal analogical reasoning of metaphorical relations: an event-related potentials study.

Science.gov (United States)

Zhao, Ming; Meng, Huishan; Xu, Zhiyuan; Du, Fenglei; Liu, Tao; Li, Yongxin; Chen, Feiyan

2011-11-24

Using event-related potentials (ERPs), this study investigated the neuromechanism underlying verbal analogical reasoning of two different metaphorical relations: attributive metaphor and relational metaphor. The analogical reasoning of attributive metaphor (AM-AR) involves a superficial similarity between analogues, while the analogical reasoning of relational metaphor (RM-AR) requires a structural similarity. Subjects were asked to judge whether one word pair was semantically analogous to another word pair. Results showed that the schema induction stage elicited a greater N400 component at the right anterior scalp for the AM-AR and RM-AR tasks, possibly attributable to semantic processing of metaphorical word pairs. The N400 was then followed by a widely distributed P300 and a late negative component (LNC1) at the left anterior scalp. The P300 was possibly related to the formation of a relational category, while the LNC1 was possibly related to the maintenance of a reasoning cue in working memory. The analogy mapping stage elicited broadly distributed N400 and LNC2, which might indicate the presence of semantic retrieval and analogical transfer. In the answer production stage, all conditions elicited the P2 component due to early stimulus encoding. The largest P2 amplitude was in the RM-AR task. The RM-AR elicited a larger LPC than did the AM-AR, even though the baseline correction was taken as a control for the differential P2 effect. The LPC effect might suggest that relational metaphors involved more integration processing than attributive metaphors. Copyright © 2011 Elsevier B.V. All rights reserved.

The Role of the CMB in Redshift Related Departures from the Gao–Solomon Relation

Energy Technology Data Exchange (ETDEWEB)

Tunnard, R.; Greve, T. R., E-mail: richard.tunnard.13@ucl.ac.uk [Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom)

2017-11-01

A strong correlation between the far-IR and HCN(1−0) line luminosities, known as the Gao–Solomon relation, has been observed to hold over more than 10 orders of magnitude in the local universe. Departures from this relation at redshifts ≳1.5 have been interpreted as evidence for increased dense gas star formation efficiency in luminous galaxies during the period of peak of star formation in the history of the universe. We examine whether the offsets from the relation can be explained by the hotter Cosmic Microwave Background (CMB) at high redshift, which, due to a loss of contrast against the hotter background, reduces the observable molecular-line flux far more significantly than the far-IR continuum bands. Simple line-of-sight modeling argues for highly significant departures from the Gao–Solomon relation at high redshift for kinetic temperatures ∼15 K, while more complex toy-galaxy models based on NGC 1068 suggest a much weaker effect with the galaxy integrated HCN line flux falling by only 10% at z = 3, within the intrinsic scatter of the relation. We conclude that, while the CMB is unlikely to explain the deviations reported in the literature, it may introduce a second-order effect on the relation by raising the low-luminosity end of the Gao–Solomon relation in cooler galaxies. A similar examination of the CO-IR relation finds tantalizing signs of the CMB having a measurable effect on the integrated CO emission in high-redshift galaxies, but these signs cannot be confirmed with the current data.

The Role of the CMB in Redshift Related Departures from the Gao–Solomon Relation

International Nuclear Information System (INIS)

Tunnard, R.; Greve, T. R.

2017-01-01

A strong correlation between the far-IR and HCN(1−0) line luminosities, known as the Gao–Solomon relation, has been observed to hold over more than 10 orders of magnitude in the local universe. Departures from this relation at redshifts ≳1.5 have been interpreted as evidence for increased dense gas star formation efficiency in luminous galaxies during the period of peak of star formation in the history of the universe. We examine whether the offsets from the relation can be explained by the hotter Cosmic Microwave Background (CMB) at high redshift, which, due to a loss of contrast against the hotter background, reduces the observable molecular-line flux far more significantly than the far-IR continuum bands. Simple line-of-sight modeling argues for highly significant departures from the Gao–Solomon relation at high redshift for kinetic temperatures ∼15 K, while more complex toy-galaxy models based on NGC 1068 suggest a much weaker effect with the galaxy integrated HCN line flux falling by only 10% at z = 3, within the intrinsic scatter of the relation. We conclude that, while the CMB is unlikely to explain the deviations reported in the literature, it may introduce a second-order effect on the relation by raising the low-luminosity end of the Gao–Solomon relation in cooler galaxies. A similar examination of the CO-IR relation finds tantalizing signs of the CMB having a measurable effect on the integrated CO emission in high-redshift galaxies, but these signs cannot be confirmed with the current data.

Statin-related myotoxicity.

Science.gov (United States)

Fernandes, Vera; Santos, Maria Joana; Pérez, Antonio

2016-05-01

Statin therapy has a very important role in decreasing cardiovascular risk, and treatment non-compliance may therefore be a concern in high cardiovascular risk patients. Myotoxicity is a frequent side effect of statin therapy and one of the main causes of statin discontinuation, which limits effective treatment of patients at risk of or with cardiovascular disease. Because of the high proportion of patients on statin treatment and the frequency of statin-related myotoxicity, this is a subject of concern in clinical practice. However, statin-related myotoxicity is probably underestimated because there is not a gold standard definition, and its diagnosis is challenging. Moreover, information about pathophysiology and optimal therapeutic options is scarce. Therefore, this paper reviews the knowledge about the definition, pathophysiology and predisposing conditions, diagnosis and management of statin-related myotoxicity, and provides a practical scheme for its management in clinical practice. Copyright © 2016 SEEN. Published by Elsevier España, S.L.U. All rights reserved.

Relativities of fundamentality

Science.gov (United States)

McKenzie, Kerry

2017-08-01

S-dualities have been held to have radical implications for our metaphysics of fundamentality. In particular, it has been claimed that they make the fundamentality status of a physical object theory-relative in an important new way. But what physicists have had to say on the issue has not been clear or consistent, and in particular seems to be ambiguous between whether S-dualities demand an anti-realist interpretation of fundamentality talk or merely a revised realism. This paper is an attempt to bring some clarity to the matter. After showing that even antecedently familiar fundamentality claims are true only relative to a raft of metaphysical, physical, and mathematical assumptions, I argue that the relativity of fundamentality inherent in S-duality nevertheless represents something new, and that part of the reason for this is that it has both realist and anti-realist implications for fundamentality talk. I close by discussing the broader significance that S-dualities have for structuralist metaphysics and for fundamentality metaphysics more generally.

Teleseismic magnitude relations

Directory of Open Access Journals (Sweden)

Markus Båth

2010-02-01

Full Text Available Using available sets of magnitude determinations, primarily from Uppsala seismological bulletin, various extensions are made of the Zurich magnitude recommendations of 1967. Thus, body-wave magnitude (m and surface-wave magnitudes (M are related to each other for 12 different earthquake regions as well as world-wide. Depth corrections for M are derived for all focal depths. Formulas are developed which permit calculation of M also from vertical component long-period seismographs. Body-wave magnitudes from broad-band and narrow-band short-period seismographs are compared and relations deduced. Applications are made both to underground nuclear explosions and to earthquakes. The possibilities of explosion-earthquake discrimination on the basis of magnitudes are examined, as well as the determination of explosive yield from magnitudes. For earthquakes, relations between magnitudes of main earthquakes and largest aftershocks are investigated. A world-wide station network for more homogeneous magnitude determinations is suggested in order to provide the necessary reference system.

Relational Perspectives on Leading

DEFF Research Database (Denmark)

Relational Perspectives on Leading discusses leadership from a relational and social constructionism perspective as practiced on an everyday basis between people. The book pursues a fast growing, practice-based approach - particularly within the Anglo-Saxon parts of the world - to organization...

Relative deprivation and intergroup prejudice

NARCIS (Netherlands)

Pettigrew, T.F.; Christ, O.; Wagner, U.; Meertens, R.W.; van Dick, R.; Zick, A.

2008-01-01

Using three diverse European surveys, we test the relationship between relative deprivation (RD) and anti-immigrant prejudice. We find that both group relative deprivation (GRD) and individual relative deprivation (IRD) are found primarily among working-class respondents who are politically

On stability relative to vector elements of the orbit in general relativity motion

International Nuclear Information System (INIS)

Abdil'din, M.M.; Bejsenova, N.A.

2002-01-01

In this work a question of a new type of stability - stability relative to vector elements of the orbit is considered in general relativity mechanics in case of the Lenze-Thirring and two body rotation. (author)

Factors related to outcomes in lupus-related protein-losing enteropathy.

Science.gov (United States)

Lim, Doo-Ho; Kim, Yong-Gil; Bae, Seung-Hyeon; Ahn, Soomin; Hong, Seokchan; Lee, Chang-Keun; Yoo, Bin

2015-11-01

Protein-losing enteropathy (PLE), characterized by severe hypoalbuminemia and peripheral edema, is a rare manifestation of systemic lupus erythematosus. This present study aimed to identify the distinctive features of lupus-related PLE and evaluate the factors related to the treatment response. From March 1998 to March 2014, the clinical data of 14 patients with lupus PLE and seven patients with idiopathic PLE from a tertiary center were reviewed. PLE was defined as a demonstration of protein leakage from the gastrointestinal tract by either technetium 99m-labelled human albumin scanning or fecal α1-antitrypsin clearance. A positive steroid response was defined as a return of serum albumin to ≥ 3.0 g/dL within 4 weeks after initial steroid monotherapy, and remission as maintenance of serum albumin ≥ 3.0 g/dL for at least 3 months. A high serum total cholesterol level was defined as a level of ≥ 240 mg/dL. The mean age of the lupus-related PLE patients was 37.0 years, and the mean follow-up duration was 55.8 months. Significantly higher erythrocyte sedimentation rate and serum total cholesterol levels were found for lupus PLE than for idiopathic PLE. Among the 14 patients with lupus PLE, eight experienced a positive steroid response, and the serum total cholesterol level was significantly higher in the positive steroid response group. A positive steroid response was associated with an initial high serum total cholesterol level and achievement of remission within 6 months. In lupus-related PLE, a high serum total cholesterol level could be a predictive factor for the initial steroid response, indicating a good response to steroid therapy alone.

Analysis of factors related to arm weakness in patients with breast cancer-related lymphedema.

Science.gov (United States)

Lee, Daegu; Hwang, Ji Hye; Chu, Inho; Chang, Hyun Ju; Shim, Young Hun; Kim, Jung Hyun

2015-08-01

The aim of this study was to evaluate the ratio of significant weakness in the affected arm of breast cancer-related lymphedema patients to their unaffected side. Another purpose was to identify factors related to arm weakness and physical function in patients with breast cancer-related lymphedema. Consecutive patients (n = 80) attended a single evaluation session following their outpatient lymphedema clinic visit. Possible independent factors (i.e., lymphedema, pain, psychological, educational, and behavioral) were evaluated. Handgrip strength was used to assess upper extremity muscle strength and the disabilities of arm, shoulder, and hand (DASH) questionnaire was used to assess upper extremity physical function. Multivariate logistic regression was performed using factors that had significant differences between the handgrip weakness and non-weakness groups. Out of the 80 patients with breast cancer-related lymphedema, 29 patients (36.3 %) had significant weakness in the affected arm. Weakness of the arm with lymphedema was not related to lymphedema itself, but was related to the fear of using the affected limb (odds ratio = 1.76, 95 % confidence interval = 1.30-2.37). Fears of using the affected limb and depression significantly contributed to the variance in DASH scores. Appropriate physical and psychological interventions, including providing accurate information and reassurance of physical activity safety, are necessary to prevent arm weakness and physical dysfunction in patients with breast cancer-related lymphedema.

The Concept of General Relativity is not Related to Reality

Science.gov (United States)

Kotas, Ronald

2015-04-01

The concept of general relativity is not related to reality. It is not real or factual Science. GR cannot account for objects falling to earth or for the weight of objects sitting on the earth. The Cavendish demonstration showing the attraction between two masses at right angles to earth's gravity, is not explained by GR. No one can prove the existence of ``space fabric.'' The concept of ``space time'' effects causing gravitational attraction between masses is wrong. Conservation law of energy - momentum does not exist in GR. LIGO fails in detecting ``gravity waves'' because there is no ``space fabric'' to transmit them. The Gravity B Probe data manipulated to show some effects, is not proof of ``space fabric.'' It is Nuclear Quantum Gravitation that provides clear definitive explanation of Gravity and Gravitation. It is harmonious with Newtonian and Quantum Mechanics, and Scientific Logic. Nuclear Quantum Gravitation has 10 clear, Scientific proofs and 21 more good indications. With this theory the Physical Forces are Unified. See: OBSCURANTISM ON EINSTEIN GRAVITATION? http://www.santilli-foundation.org/inconsistencies-gravitation.php and Einstein's Theory of Relativity versus Classical Mechanics, by Paul Marmet http://www.newtonphysics.on.ca/einstein/

Kinematics of relative motion of test particles in general relativity

International Nuclear Information System (INIS)

Bazanski, S.L.

1977-01-01

A detailed mathematical study of the concept of geodesic deviation in pseudo-riemannian geometry is presented. A generalization of this concept to geodesic deviations of a higher order is then introduced and the second geodesic deviation is investigated in some detail. A geometric interpretation of the set of generalized geodesic deviations is given and applied in general relativity to determine a covariant and local description (with a desired order of accuracy) of test motions which take place in a certain finite neighbourhood of a given world line of an observer. The proper time evolution of two other objects related to geodesic deviation is also discussed: the space separation vector and the telescopic vector. This last name is given here to a field of null vectors along observer's world line which always point towards the same adjacent world line. The telescopic equations allow to determine the evolution of the frequency shift of electromagnetic radiation sent from and received on neighbouring world lines. On the basis of these equations also certain relations have been derived which connect the frequencies or frequency shifts with the curvature of space-time

Relative Effects at Work

NARCIS (Netherlands)

Braeken, Johan; Mulder, Joris; Wood, Stephen

2015-01-01

Assessing the relative importance of predictors has been of historical importance in a variety of disciplines including management, medicine, economics, and psychology. When approaching hypotheses on the relative ordering of the magnitude of predicted effects (e.g., the effects of discrimination

Strategi Public Relations Pariwisata Bali

OpenAIRE

Cahaya Putra, Kadek Dwi

2008-01-01

Abstract: Bali has to maintain its image and reputation as the world leading class tourist destination. Tourism in fact is a vulnerable industry easily ruined by related issues and crises. Therefore, Public Relations (PR) with its communication strategy is highly required to maintain good relationships with related parties. This study is aimed at identifying Bali’s Public Relations positioning and setting up its PR strategies. Data and information are gained by means of questionnaire distri...

General relativity basics and beyond

CERN Document Server

Date, Ghanashyam

2015-01-01

A Broad Perspective on the Theory of General Relativity and Its Observable Implications General Relativity: Basics and Beyond familiarizes students and beginning researchers with the basic features of the theory of general relativity as well as some of its more advanced aspects. Employing the pedagogical style of a textbook, it includes essential ideas and just enough background material needed for readers to appreciate the issues and current research. Basics The first five chapters form the core of an introductory course on general relativity. The author traces Einstein’s arguments and presents examples of space-times corresponding to different types of gravitational fields. He discusses the adaptation of dynamics in a Riemannian geometry framework, the Einstein equation and its elementary properties, and different phenomena predicted or influenced by general relativity. Beyond Moving on to more sophisticated features of general relativity, the book presents the physical requirements of a well-defined de...

Relativity in modern physics

CERN Document Server

Deruelle, Nathalie

2018-01-01

This comprehensive textbook on relativity integrates Newtonian physics, special relativity and general relativity into a single book that emphasizes the deep underlying principles common to them all, yet explains how they are applied in different ways in these three contexts. Newton's ideas about how to represent space and time, his laws of dynamics, and his theory of gravitation established the conceptual foundation from which modern physics developed. Book I in this volume offers undergraduates a modern view of Newtonian theory, emphasizing those aspects needed for understanding quantum and relativistic contemporary physics. In 1905, Albert Einstein proposed a novel representation of space and time, special relativity. Book II presents relativistic dynamics in inertial and accelerated frames, as well as a detailed overview of Maxwell's theory of electromagnetism. This provides undergraduate and graduate students with the background necessary for studying particle and accelerator physics, astrophysics and ...

de Sitter special relativity

International Nuclear Information System (INIS)

Aldrovandi, R; Almeida, J P Beltran; Pereira, J G

2007-01-01

A special relativity based on the de Sitter group is introduced, which is a theory that might hold up in the presence of a non-vanishing cosmological constant. Like ordinary special relativity, it retains the quotient character of spacetime, and a notion of homogeneity. As a consequence, the underlying spacetime will be a de Sitter spacetime, whose associated kinematics will differ from that of ordinary special relativity. The corresponding modified notions of energy and momentum are obtained, and the exact relationship between them, which is invariant under a re-scaling of the involved quantities, explicitly exhibited. Since the de Sitter group can be considered a particular deformation of the Poincare group, this theory turns out to be a specific kind of deformed (or doubly) special relativity. Some experimental consequences, as well as the causal structure of spacetime-modified by the presence of the de Sitter horizon-are briefly discussed

Woodworking injuries: a comparative study of work-related and hobby-related accidents.

Science.gov (United States)

Loisel, F; Bonin, S; Jeunet, L; Pauchot, J; Tropet, Y; Obert, L

2014-10-01

The primary objective of this study was to describe the injury characteristics and demographics of patients injured during woodworking activities, upon their arrival to the emergency department in a regional of France where this industry is prevalent. The secondary objective was to compare patient and injury characteristics for work-related and hobby-related accidents. A cohort of 87 patients who had suffered a woodworking accident over a two-year period was evaluated; 79 were available for follow-up. The context and circumstances of the accident, nature and location of the injuries and patient demographics were recorded. Hobby-related accidents accounted for two-thirds of the accidents (51/79). Most of the injured workers were either loggers (35%) or carpenters (46%). The hand was injured in 53 cases (67%). Work-related accidents resulted in significantly more serious consequences in terms of hospital stay, work stoppage, resumption of work or retraining than hobby-related accidents. For the workplace accidents, 86% occurred on new machines; more than 25% of the machines involved in accidents at home were over 15 years. Sixty-eight per cent of workers were wearing their safety gear, while only 31% of those injured during recreational woodworking wore the appropriate gear. Several elements of prevention should be improved: information about the need to maintain the equipment, protect the worker with suitable clothing, and learn which maneuvers are considered hazardous. Safety gear should be regularly inspected in the workplace. Copyright © 2014. Published by Elsevier SAS.

Overt and Relational Aggression Participant Role Behavior: Measurement and Relations With Sociometric Status and Depression.

Science.gov (United States)

Casper, Deborah M; Card, Noel A; Bauman, Sheri; Toomey, Russell B

2017-09-01

This study is the first to measure participant role behavior across overt and relational forms of aggression. The Overt and Relational Aggression Participant Role Behavior Scales were designed to measure aggression, assisting, reinforcing, defending, victimization, and outsider behavior during acts of peer aggression in an ethnically diverse sample of 609 adolescents (M age = 12 years). The data fit the hypothesized 12-factor model, and measurement invariance was established across gender. Relational victimization, but not overt victimization, was positively associated with all other relational aggression roles. Each participant role subscale was positively associated with depressive symptoms with the exception of the overt and relational outsider subscales. Future research and intervention efforts should consider overt and relational aggression participant roles, separately. © 2017 The Authors. Journal of Research on Adolescence © 2017 Society for Research on Adolescence.

Peripheral intravenous catheter-related phlebitis and related risk factors.

Science.gov (United States)

Nassaji-Zavareh, M; Ghorbani, R

2007-08-01

Peripheral intravenous catheter-related phlebitis is a common and significant problem in clinical practice. This study aims to investigate the incidence of phlebitis and to evaluate some important related factors. 300 patients admitted to medical and surgical wards of hospitals in Semnan, Iran from April 2003 to February 2004 were prospectively studied. Variables evaluated were age, gender, site and size of catheter, type of insertion and underlying conditions (diabetes mellitus, trauma, infectious disease and burns). Phlebitis was defined when at least four criteria were fulfilled (erythema, pain, tenderness, warmth, induration, palpable cord and swelling). Any patient who was discharged or their catheter removed before three days were excluded. Phlebitis occurred in 26 percent (95 percent confidence interval [CI] 21- 31 percent) of patients. There was no significant relationship between age, catheter bore size, trauma and phlebitis. Related risk factors were gender (odds-ratio [OR] 1.50, 95 percent CI 1.01-2.22), site (OR 3.25, 95 percent CI 2.26-4.67) and type of insertion (OR 2.04, 95 percent CI 1.36-3.05) of catheter, diabetes mellitus (OR 7.78, 95 percent CI 4.59-13.21), infectious disease (OR 6.21, 95 percent CI 4.27-9.03) and burns (OR 3.96, 95 percent CI 3.26-4.82). Phlebitis is still an important and ongoing problem in medical practice. In patients with diabetes mellitus and infectious diseases, more attention is needed.

Special theory of relativity

CERN Document Server

Kilmister, Clive William

1970-01-01

Special Theory of Relativity provides a discussion of the special theory of relativity. Special relativity is not, like other scientific theories, a statement about the matter that forms the physical world, but has the form of a condition that the explicit physical theories must satisfy. It is thus a form of description, playing to some extent the role of the grammar of physics, prescribing which combinations of theoretical statements are admissible as descriptions of the physical world. Thus, to describe it, one needs also to describe those specific theories and to say how much they are limit

The Increasing Importance of Employee Relations

Science.gov (United States)

Keckley, Paul

1977-01-01

Surveys corporate public relations executives for information about their concern for and involvement with employee relations programming in their organizations and analyzes current public relations education as it relates to these findings. Available from: Public Relations Review, Ray Hiebert, Dean, College of Journalism, University of Maryland,…

The star-triangle relation and the inversion relation in statistical mechanics

International Nuclear Information System (INIS)

Maillard, J.M.

1983-10-01

The plan of this paper is the following: we give a definition of the star-triangle relation (S.T.R.); we also define another very simple relation which occurs simultaneously with the S.T.R. for the two-dimensional (2-d) exact models: the inversion relation (I.R.); we study the connection between the S.T.R. and the I.R.: we see that the S.T.R. is deeply connected to the I.R., but, on the contrary, we see that the I.R. can exist even when no S.T.R. exists, as we show for the 2-d anisotropic Potts model by exhibiting an inverse functional equation satisfied by the partition function; having recognized the I.R. as an interesting concept, we use it by looking at the analytical consequences of this I.R. and, at last, we come back to the S.T.R., examining some consequences of the I.R. on the S.T.R

Health-related behaviors in women with lifestyle-related diseases.

Science.gov (United States)

Kozica, Samantha L; Deeks, Amanda A; Gibson-Helm, Melanie E; Teede, Helena J; Moran, Lisa J

2012-01-01

Lifestyle related diseases associated with physical inactivity and poor diet quality, represent a major health burden. This study assessed negative and positive health habits and health care utilization in healthy women (n = 50) and women with lifestyle related diseases such as polycystic ovary syndrome (PCOS) (n = 50), gestational diabetes mellitus (GDM) (n = 44) and type 2 diabetes (DM2) (n = 43). A significant difference existed across groups for negative health habits (P = .012) with a trend for positive health habits (P = .06) elevated in women with PCOS. Women with DM2 had the highest amount of health care utilization including doctors office visits (P women with DM2 but there were no differences in positive health habits across sub-groups. Encouraging lifestyle modification in women with precursor diseases such as GDM and PCOS is vital in order to prevent progression to DM2.

Structural Logical Relations

DEFF Research Database (Denmark)

Schürmann, Carsten; Sarnat, Jeffrey

2008-01-01

Tait's method (a.k.a. proof by logical relations) is a powerful proof technique frequently used for showing foundational properties of languages based on typed lambda-calculi. Historically, these proofs have been extremely difficult to formalize in proof assistants with weak meta-logics......, such as Twelf, and yet they are often straightforward in proof assistants with stronger meta-logics. In this paper, we propose structural logical relations as a technique for conducting these proofs in systems with limited meta-logical strength by explicitly representing and reasoning about an auxiliary logic...

THE CHANGING DIMENSIONS OF PUBLIC RELATIONS: THE RELATIONSHIP BETWEEN BRAND MANAGEMENT AND PUBLIC RELATIONS

OpenAIRE

KÖKER, E. PELİN BAYTEKİN MİNE YENİÇERİ ALEMDAR

2008-01-01

The changes in the dimensions of public relations, due to the globalization effect on the business enterprises, are remarkable. In this manner, the relationship of public relations with re-engineering, total quality management, six sigma approach, event management, crisis management, reputation management, knowledge management and customer relationship management is evaluated in this study. Moreover, after establishing these interactions, the relationship between public relations and brand ma...

Strategies of social welfare users: a relational readi ng concerning power relations

Directory of Open Access Journals (Sweden)

Silvana Aparecida Mariano

2013-01-01

Full Text Available This article addresses the analysis of power relations within the operation of social welfare policy, based on a case study conducted in Londrina, Paraná. Our analysis adopts a relational perspective on the confi guration of power among the beneficiaries of the policy and the social workers responsible for implementing state actions to fi ght poverty. Basically what we found were areas of dissonance between conceptions and perceptions of users and social workers, so that an unreadable universe is created for users on social welfare and, thus, possible ways to consolidate the transfer of income are blocked as a right to citizenship. We focus on actions related to the transfer of income because of its relevance to the Brazilian social welfare today.

Explicit Relations of Physical Potentials Through Generalized Hypervirial and Kramers' Recurrence Relations

Science.gov (United States)

Sun, Guo-Hua; Dong, Shi-Hai

2015-06-01

Based on a Hamiltonian identity, we study one-dimensional generalized hypervirial theorem, Blanchard-like (non-diagonal case) and Kramers' (diagonal case) recurrence relations for arbitrary xκ which is independent of the central potential V(x). Some significant results in diagonal case are obtained for special κ in xκ (κ ≥ 2). In particular, we find the orthogonal relation = δn1n2 (κ = 0), = (En1 - En2)2 (κ = 1), En = + (κ = 2) and -4En + + 4 = 0 (κ = 3). The latter two formulas can be used directly to calculate the energy levels. We present useful explicit relations for some well known physical potentials without requiring the energy spectra of quantum system. Supported in part by Project 20150964-SIP-IPN, COFAA-IPN, Mexico

Teaching Mediated Public Relations.

Science.gov (United States)

Kent, Michael L.

2001-01-01

Discusses approaches to teaching a mediated public relations course, emphasizing the World Wide Web. Outlines five course objectives, assignments and activities, evaluation, texts, and lecture topics. Argues that students mastering these course objectives will understand ethical issues relating to media use, using mediated technology in public…

Relativity: An Introduction to Special and General Relativity, 3rd edn

International Nuclear Information System (INIS)

Rendall, Alan

2004-01-01

This book is concerned with mathematical topics related to general relativity. Chapters 1-6 are expositions of a number of parts of mathematics which are important for relativists. The main subjects covered are linear algebra, general topology, manifolds, Lie groups and, in particular detail, the Lorentz group. Chapters 7-13 analyse aspects of the geometrical structure of spacetimes. They focus on symmetries of various types and on properties of curvature. Subjects covered include the Petrov classification, holonomy groups, the relation between metric and curvature, affine vector fields, conformal symmetries, projective symmetries and curvature collineations. This part of the book is a treatise on the (mainly local) geometry of four-dimensional Lorentz manifolds, with attention to energy-momentum tensors of interest in general relativity. In the first six chapters the author has concentrated on giving definitions and statements of theorems, the proofs being left to the references that are quoted. He has clearly put much effort into producing a very smooth exposition which is easy to follow and has succeeded in giving us a readable and informative account of the mathematics covered. At the same time mathematical rigour is strictly observed. He also takes the time to carefully discuss many of the subtleties which arise. This part of the book has the character of a textbook suitable for students of general relativity but experienced researchers will also find it a useful reference and are likely to come across interesting facts they have not met elsewhere. The remaining chapters are more like a research monograph and are influenced by the author's own research interests. More proofs are included. Much of the material in this part will be of interest to a narrower audience of relativists than that of the first part. It should, however, be of interest to those working on exact solutions of the Einstein equations and related topics. It is also the case that most

Relativity of Visual Communication

Directory of Open Access Journals (Sweden)

Arto Mutanen

2016-03-01

Full Text Available Communication is sharing and conveying information. In visual communication especially visual messages have to be formulated and interpreted. The interpretation is relative to a method of information presentation method which is human construction. This holds also in the case of visual languages. The notions of syntax and semantics for visual languages are not so well founded as they are for natural languages. Visual languages are both syntactically and semantically dense. The density is connected to the compositionality of the (pictorial languages. In the paper Charles Sanders Peirce’s theory of signs will be used in characterizing visual languages. This allows us to relate visual languages to natural languages. The foundation of information presentation methods for visual languages is the logic of perception, but only if perception is understood as propositional perception. This allows us to understand better the relativity of information presentation methods, and hence to evaluate the cultural relativity of visual communication.

Recovery of Work-Related Stress: Complaint Reduction and Work-Resumption are Relatively Independent Processes.

Science.gov (United States)

de Vente, Wieke; Kamphuis, Jan Henk; Blonk, Roland W B; Emmelkamp, Paul M G

2015-09-01

The process of recovery from work-related stress, consisting of complaint reduction and work-resumption, is not yet fully understood. The aim of this study was to investigate predictors of complaint reduction and work-resumption, as well as testing complaint reduction as a mediator in the association between predictors and work-resumption. Seventy-one patients on sickness-leave because of work-related stress complaints were followed over a period of 13 months. Predictors comprised personal (demographics, coping, cognitions), work-related (job-characteristics, social support), and illness-related (complaint duration, absence duration) variables. Dependent variables were distress complaints, burnout complaints, and work-resumption. Complaints reduced considerably over time to borderline clinical levels and work-resumption increased to 68% at 13 months. Predictors of stronger reduction of distress complaints were male gender, less working hours, less decision authority, more co-worker support, and shorter absence duration. Predictors of stronger reduction of burnout complaints were male gender, lower age, high education, less avoidant coping, less decision authority, more job security, and more co-worker support. Predictors of work-resumption were lower age and stronger reduction of burnout complaints. No indication for a mediating role of burnout complaints between the predictor age and work-resumption was found. Complaint reduction and work-resumption are relatively independent processes. Symptom reduction is influenced by individual and work-related characteristics, which holds promise for a multidisciplinary treatment approach for work-related stress.

Public Relations: Selected, Annotated Bibliography.

Science.gov (United States)

Demo, Penny

Designed for students and practitioners of public relations (PR), this annotated bibliography focuses on recent journal articles and ERIC documents. The 34 citations include the following: (1) surveys of public relations professionals on career-related education; (2) literature reviews of research on measurement and evaluation of PR and…

Education for Corporate Public Relations.

Science.gov (United States)

Baxter, Bill L.

1985-01-01

Surveyed members of the Public Relations Society of America who reported that (1) students planning public relations careers in corporations should take courses in this order of priority: journalism, public relations, internships, speech communication, marketing, etc., and (2) an MBA degree was the best advanced education degree. (PD)

Can coupling constants be related

International Nuclear Information System (INIS)

Nandi, Satyanarayan; Ng, Wing-Chiu.

1978-06-01

We analyze the conditions under which several coupling constants in field theory can be related to each other. When the relation is independent of the renormalization point, the relation between any g and g' must satisfy a differential equation as follows from the renormalization group equations. Using this differential equation, we investigate the criteria for the feasibility of a power-series relation for various theories, especially the Weinberg-Salam type (including Higgs bosons) with an arbitrary number of quark and lepton flavors. (orig./WL) [de

Relative Utilitarianism

OpenAIRE

DHILLON, Amrita; MERTENS, Jean-François

1993-01-01

In a framework of preferences over lotteries, we show that an axiom system consisting of weakned versions of Arrow’s axioms has a unique solution. “Relative Utilitarianism” consists of first normalizing individual von Neumann-Morgenstern utilities between 0 and 1 and then summing them.

Relational benefits and quality of relation – towards understanding of the ties between science and business

Directory of Open Access Journals (Sweden)

Małgorzata Grzegorczyk

2016-06-01

Full Text Available The goal of this article is to answer the question in what way relational marketing and in particular, the concept of relational benefits, as well as quality of relation may influence the transfer of knowledge and technologies from universities to business. Another goal is to highlight significant, future directions of research in this area. Integration of the theory of relational marketing and technology transfer may create a new framework for fuller understanding of the ties between science and business. Research in this area may contribute to the expansion and development of the theory of relational marketing, which until now was limited to the analysis of relations within a single sector. The results of conducted research show that ties characterized by high relational engagement are common, recognized by both academic and business environment as precious and play an important role in stimulating innovations. The quality of relations and relational benefits may play an important role in building long-term ties between universities and the industry. Integration of behavioural theories with the theory of technology transfer may contribute to a better understanding of the behaviour of particular participants of the transfer on the individual level.

Relational Processing Following Stroke

Science.gov (United States)

Andrews, Glenda; Halford, Graeme S.; Shum, David; Maujean, Annick; Chappell, Mark; Birney, Damian

2013-01-01

The research examined relational processing following stroke. Stroke patients (14 with frontal, 30 with non-frontal lesions) and 41 matched controls completed four relational processing tasks: sentence comprehension, Latin square matrix completion, modified Dimensional Change Card Sorting, and n-back. Each task included items at two or three…

Community government for minority groups – revisiting the ideas of Bauer and Renner towards developing a model of self-government by minority groups under public law / Bertus de Villiers

Index Scriptorium Estoniae

de Villiers, Bertus

2016-01-01

Vähemusrahvuste iseseisvuse ja (kollektiivsete) õiguste kaitsest; austria poliitikute, jurist Karl Renneri (1870–1950) ja filosoof Otto Baueri (1881–1938) iseseisva rahvuse ja kultuurautonoomia kontseptsioonist

Future Time Perspective Impacts Gain-Related but Not Loss-Related Intertemporal Choice.

Science.gov (United States)

Li, Tian; Tan, Yuxin; Gong, Xianmin; Yin, Shufei; Qiu, Fangshu; Hu, Xue

2018-01-01

Future time perspective (FTP) modulates individuals' temporal orientation in selecting their motivations and goals, which widely influences their cognitions and behaviors. However, it remains unclear how FTP exactly affects intertemporal choice. To clarify the effect of FTP on intertemporal choice, 90 college students ( M age = 21.70, SD = 1.23) were randomly assigned to the limited FTP condition (16 males, 29 females) and the open-ended FTP condition (17 males, 28 females). In the limited FTP condition, participants were instructed to imagine their states of being 70 years old, whereas in the open-ended FTP condition, they were instructed to describe their current states. All participants then completed a series of intertemporal choice tasks, in which they chose from gain- and loss-related choices occurring at various time points. Results showed that the participants who received the future-imagining manipulation had more limited FTP compared with those who did not receive the manipulation, which confirmed the validity of the FTP manipulation. A 2 (FTP: limited vs. open-ended) × 2 (type of choice: gain vs. loss) repeated measures ANOVA on discount rate revealed a significant interaction between these two factors. The participants in the limited FTP condition had higher discount rates on gain-related choices but showed no difference on loss-related choices compared with the participants under the open-ended FTP condition. The results suggest that limited FTP could lower individuals' future orientation (i.e., willingness to delay an outcome) on gain-related, but not on loss-related, intertemporal decision-making.

Geometry of physical dispersion relations

International Nuclear Information System (INIS)

Raetzel, Dennis; Rivera, Sergio; Schuller, Frederic P.

2011-01-01

To serve as a dispersion relation, a cotangent bundle function must satisfy three simple algebraic properties. These conditions are derived from the inescapable physical requirements that local matter field dynamics must be predictive and allow for an observer-independent notion of positive energy. Possible modifications of the standard relativistic dispersion relation are thereby severely restricted. For instance, the dispersion relations associated with popular deformations of Maxwell theory by Gambini-Pullin or Myers-Pospelov are not admissible. Dispersion relations passing the simple algebraic checks derived here correspond to physically admissible Finslerian refinements of Lorentzian geometry.

Basic relativity. An introductory essay

Energy Technology Data Exchange (ETDEWEB)

Hrasko, Peter [Pecs Univ. (Hungary)

2011-07-01

This Brief presents a new way of introducing relativity theory, in which perplexing relativistic effects such as time dilation and Lorentz contraction are explained prior to the discussion of Lorentz-transformation. The notion of relativistic mass is shown to contradict the spirit of relativity theory and the true significance of the mass-energy relation is contrasted with the popular view of it. The author discusses the twin paradox from the point of view of both siblings. Last but not least, the fundamentals of general relativity are described, including the recent Gravity Probe B experiment. (orig.)

Basic relativity. An introductory essay

International Nuclear Information System (INIS)

Hrasko, Peter

2011-01-01

This Brief presents a new way of introducing relativity theory, in which perplexing relativistic effects such as time dilation and Lorentz contraction are explained prior to the discussion of Lorentz-transformation. The notion of relativistic mass is shown to contradict the spirit of relativity theory and the true significance of the mass-energy relation is contrasted with the popular view of it. The author discusses the twin paradox from the point of view of both siblings. Last but not least, the fundamentals of general relativity are described, including the recent Gravity Probe B experiment. (orig.)

Basic Relativity An Introductory Essay

CERN Document Server

Hraskó, Péter

2011-01-01

This Brief presents a new way of introducing relativity theory, in which perplexing relativistic effects such as time dilation and Lorentz contraction are explained prior to the discussion of Lorentz-transformation. The notion of relativistic mass is shown to contradict the spirit of relativity theory and the true significance of the mass-energy relation is contrasted with the popular view of it. The author discusses the twin paradox from the point of view of both siblings. Last but not least, the fundamentals of general relativity are described, including the recent Gravity Probe B experiment.

Spatial geometry and special relativity

DEFF Research Database (Denmark)

Kneubil, Fabiana Botelho

2016-01-01

In this work, it is shown the interplay of relative and absolute entities, which are present in both spatial geometry and special relativity. In order to strengthen the understanding of special relativity, we discuss firstly an instance of geometry and the existence of both frame......-dependent and frame-independent entities. We depart from a subject well known by students, which is the three-dimensional geometric space in order to compare, afterwards, with the treatment of four-dimensional space in the special relativity. The differences and similarities between these two subjects are also...

Marijuana-Related Posts on Instagram

Science.gov (United States)

Krauss, Melissa J.; Sowles, Shaina J.; Bierut, Laura J.

2016-01-01

Instagram is a highly visual social networking site whose audience continues to grow, especially among young adults. In the present study, we examine marijuana-related content on Instagram to better understand the varied types of marijuana-related social networking occurring on this popular social media platform. We collected 417,561 Instagram posts with marijuana-related hashtags from November 29 to December 12, 2014. We assessed content of a random sample (n = 5000) of these posts with marijuana-related hashtags. Approximately 2136 (43 %) were explicit about marijuana and further analyzed. Of the 2136 marijuana-related posts, images of marijuana were common (n = 1568). Among these 1568 marijuana images, traditional forms (i.e., buds/leaves) were the most common (63 %), followed by some novel forms of marijuana, including marijuana concentrates (20 %). Among the 568 posts that displayed marijuana being ingested, 20 % showed someone dabbing marijuana concentrates. Marijuana-related advertisements were also observed among the 2136 marijuana-related posts (9 %). Our findings signal the promotion of marijuana use in its traditional plant-based form; trendy and novel modes of marijuana ingestion were also endorsed. This content along with the explicit marketing of marijuana that we observed on Instagram have potential to influence social norms surrounding marijuana use. PMID:27262456

Marijuana-Related Posts on Instagram.

Science.gov (United States)

Cavazos-Rehg, Patricia A; Krauss, Melissa J; Sowles, Shaina J; Bierut, Laura J

2016-08-01

Instagram is a highly visual social networking site whose audience continues to grow, especially among young adults. In the present study, we examine marijuana-related content on Instagram to better understand the varied types of marijuana-related social networking occurring on this popular social media platform. We collected 417,561 Instagram posts with marijuana-related hashtags from November 29 to December 12, 2014. We assessed content of a random sample (n = 5000) of these posts with marijuana-related hashtags. Approximately 2136 (43 %) were explicit about marijuana and further analyzed. Of the 2136 marijuana-related posts, images of marijuana were common (n = 1568). Among these 1568 marijuana images, traditional forms (i.e., buds/leaves) were the most common (63 %), followed by some novel forms of marijuana, including marijuana concentrates (20 %). Among the 568 posts that displayed marijuana being ingested, 20 % showed someone dabbing marijuana concentrates. Marijuana-related advertisements were also observed among the 2136 marijuana-related posts (9 %). Our findings signal the promotion of marijuana use in its traditional plant-based form; trendy and novel modes of marijuana ingestion were also endorsed. This content along with the explicit marketing of marijuana that we observed on Instagram have potential to influence social norms surrounding marijuana use.

Clocks and special relativity

International Nuclear Information System (INIS)

MacRoberts, D.T.

1980-01-01

A kinematic theory without precise definitions of the 'space' and 'time' used is an uninterpreted calculus. The definition of 'time' in special relativity is based on light propagation and the 'constant velocity of light' is a tautological consequence of the definition. When this definition is reified in a 'clock' the phenomenon of 'time dilation' occurs, in terms of the defined time, but is not reciprocal between moving systems; the postulate of relativity is not observed. The new definition of time is compatible with an ether theory without the relativity principle. The derivation of the Lorentz transformations, which requires both postulates, is purely formalistic and is not ontologically sound. (Auth.)