bluuebunny/crossref_metadata_2025_split huggingface dataset:
Supple networks: Preferential attachment by diversity in nascent social graphs
Authors: WATTS JAMESON K. M. , KOPUT KENNETH W. 
Published: November 2014

AbstractA preference for diversity has been identified as an important predictor of tie formation in certain networks, both social and organizational, that also exhibit a high degree of suppleness–the ability to retain their general form and character under stress (Durkheim, 1893/1997. The division of labor in society; Powell et al., 1996. Administrative Science Quarterly 116–145; Powell et al., 2005. American Journal of Sociology, 110(4), 1132–1205; Koput & Gutek, 2010. Gender stratification in the IT industry: Sex, status and social capital. Edward Elgar Publishing). Extant models of preferential attachment, based on popularity, similarity, and cohesion, meanwhile, produce exceedingly brittle networks (Albert et al., 2000. Nature, 406(6794), 378–382; Callaway et al., 2000. Physical Review Letters, 85(25), 5468–5471; Holme et al., 2002. Physical Review E, 65(2), 026107; Shore et al., 2013 Social Networks, 35(1), 116–123). A model of preferential attachment based on diversity is introduced and simulated, demonstrating that a preference for diversity can create a structure characterized by suppleness. This occurs because a preference for diversity promotes overlapping and redundant weak ties during the early stages of network formation.
Kinetic behaviour ofStaphylococcus aureuson cheese as a function of water activity and temperature
Authors: Lee Heeyoung , Kim Kyungmi , Lee Soomin , Yoon Yohan 
Published: November 2014

This study developed mathematical models in order to evaluate the effect ofAw(Water activity) and growth temperature onStaphylococcus aureuskinetic behaviour. TheAwlevels (0·970, 0·975, 0·983, and 0·991) of cheese were adjusted by NaCl; then,Staph. aureuswas inoculated on the cheese, followed by storage at 7–30 °C for 72–720 h. Total bacterial andStaph. aureuscell counts were enumerated on tryptic soy agar and mannitol salt agar, respectively. The Baranyi model was fitted to theStaph. aureusgrowth data in order to calculate the maximum specific growth rate (μmax; log CFU/g/h), lag phase duration (λ; h), lower asymptote (N0; log CFU/g) and upper asymptote (Nmax; log CFU/g). The effects of storage temperature andAwon the kinetic parameters (μmaxand λ) were then further analysed with the Ratkowsky-type model and a polynomial equation, respectively. The root mean square error (RMSE) and relative error (RE) were calculated in order to estimate the model performance. No significant effect ofAwonStaph. aureusgrowth was observed at 7 °C; thus, the Baranyi model was fitted to the growth data from 15, 25 and 30 °C. The μmaxvalues (0·011–0·303 log CFU/g/h) increased (P<0·05) as the storage temperature andAwincreased. In addition, λ values (2·42–63·48 h) decreased (P<0·05) as storage temperature andAwincreased; yet, the effect ofAwon λ was observed only at 15 °C. The theoretical minimum storage temperature andAwwere 10·15 °C and 0·882, respectively.RMSE(0·010–1·544) andREvalues (−0·131 to 0·187) from validation indicated that model performance was appropriate. Hence, these results suggest that the developed models in this study should be useful in describing the effect of temperature andAwon the growth kinetic behaviour ofStaph. aureusin cheese along with the exposure assessment ofStaph. aureusin cheese as well.
Hypoglycaemic effect of galactooligosaccharides in alloxan-induced diabetic rats
Authors: Sangwan Vikas , Tomar Sudhir K , Ali Babar , Singh Ram R B , Singh Ashish K 
Published: November 2014

This study was conducted to assess the effect of prebiotic galactooligosaccharides (GOS) on alloxan-induced diabetes in male Sprague-Dawley (SD) rats. Diabetes was induced by administration of alloxan (100 mg/kg) and rats were divided in 4 groups: normal control group (NCG), prebiotic control group (PCG), diabetic control group (DCG) and diabetic prebiotic group (DPG). While PCG and DPG were fed with GOS supplemented (10% w/w) diet, NCG and DCG were administered with basal diet. Rats were sacrificed after 42 d for collection of blood and liver. Faecal samples were collected at the interval of 7 d throughout the study for measurement of lactobacilli and coliform count. Feeding of GOS decreased or delayed the severity of diabetes by amelioration of diabetes associated markers including fasting blood glucose, haemoglobin, glycosylated haemoglobin triglycerides, total cholesterol, low density lipoproteins, creatinine and urea. GOS was also found to improve the levels of antioxidative enzymes (superoxide dismutase, catalase and glutathione peroxidase) in liver and blood. Improvement in lactobacilli count along with a concomitant decrease in coliform count was observed in GOS fed groups.
Community policing and the politics of local development in Tanzania
Authors: Cross Charlotte 
Published: November 2014

ABSTRACTThis paper explores how the concept of ‘community policing’ has been understood and implemented in Tanzania. Whilst community policing is locally considered to be a very effective means of preventing crime and improving neighbourhood safety, the extent to which it constitutes a more accountable, responsive or ‘democratic’ form of policing, as assumed by proponents, is questionable. Based on research conducted in the city of Mwanza, this paper explains these outcomes in terms of continuities between forms of popular mobilisation that developed during Tanzania's socialist one-party era, and particularly the co-optation by the ruling party ofsungusunguvigilantism, and understandings of the role of citizen participation in local development today. However, this paper suggests that as multiparty political competition becomes increasingly competitive, the sustainability of this model of community policing may be undermined, as citizens challenge the notion that they are obliged to provide resources for development directed from above.
The black middle class and democracy in South Africa
Authors: Southall Roger 
Published: November 2014

ABSTRACTAgainst the background of celebrations about the rise of a middle class in Africa and its widely posited role in promoting democracy, this paper explores the politics of the black middle class in South Africa. It does so by examining three propositions: first, that the black middle class was a positive force in the struggle for liberation and democracy; second, that post-1994 strategies of the African National Congress (ANC) government which have benefited it secure its political alignment with the ANC's ‘party-state’; and third, that its growth and increasing diversity will contribute to the consolidation of democracy. The conclusion drawn is that while the black middle class may indeed play an important role in furthering democracy, its political orientations and behaviour cannot be assumed to be inherently progressive.
Different neural and cognitive response to emotional faces in healthy monozygotic twins at risk of depression
Authors: Miskowiak K. W. , Glerup L. , Vestbo C. , Harmer C. J. , Reinecke A. , Macoveanu J. , Siebner H. R. , Kessing L. V. , Vinberg M. 
Published: November 2014

BackgroundNegative cognitive bias and aberrant neural processing of emotional faces are trait-marks of depression. Yet it is unclear whether these changes constitute an endophenotype for depression and are also present in healthy individuals with hereditary risk for depression.MethodThirty healthy, never-depressed monozygotic (MZ) twins with a co-twin history of depression (high risk group: n = 13) or without co-twin history of depression (low-risk group: n = 17) were enrolled in a functional magnetic resonance imaging (fMRI) study. During fMRI, participants viewed fearful and happy faces while performing a gender discrimination task. After the scan, they were given a faces dot-probe task, a facial expression recognition task and questionnaires assessing mood, personality traits and coping strategies.ResultsHigh-risk twins showed increased neural response to happy and fearful faces in dorsal anterior cingulate cortex (ACC), dorsomedial prefrontal cortex (dmPFC), pre-supplementary motor area and occipito-parietal regions compared to low-risk twins. They also displayed stronger negative coupling between amygdala and pregenual ACC, dmPFC and temporo-parietal regions during emotional face processing. These task-related changes in neural responses in high-risk twins were accompanied by impaired gender discrimination performance during face processing. They also displayed increased attention vigilance for fearful faces and were slower at recognizing facial expressions relative to low-risk controls. These effects occurred in the absence of differences between groups in mood, subjective state or coping.ConclusionsDifferent neural response and functional connectivity within fronto-limbic and occipito-parietal regions during emotional face processing and enhanced fear vigilance may be key endophenotypes for depression.
Molecular biology and biophysical properties of ion channel gating pores
Authors: Moreau Adrien , Gosselin-Badaroudine Pascal , Chahine Mohamed 
Published: November 2014

AbstractThe voltage sensitive domain (VSD) is a pivotal structure of voltage-gated ion channels (VGICs) and plays an essential role in the generation of electrochemical signals by neurons, striated muscle cells, and endocrine cells. The VSD is not unique to VGICs. Recent studies have shown that a VSD regulates a phosphatase. Similarly, Hv1, a voltage-sensitive protein that lacks an apparent pore domain, is a self-contained voltage sensor that operates as an H+channel.VSDs are formed by four transmembrane helices (S1–S4). The S4 helix is positively charged due to the presence of arginine and lysine residues. It is surrounded by two water crevices that extend into the membrane from both the extracellular and intracellular milieus. A hydrophobic septum disrupts communication between these water crevices thus preventing the permeation of ions. The septum is maintained by interactions between the charged residues of the S4 segment and the gating charge transfer center. Mutating the charged residue of the S4 segment allows the water crevices to communicate and generate gating pore or omega pore. Gating pore currents have been reported to underlie several neuronal and striated muscle channelopathies. Depending on which charged residue on the S4 segment is mutated, gating pores are permeant either at depolarized or hyperpolarized voltages. Gating pores are cation selective and seem to converge toward Eisenmann's first or second selectivity sequences. Most gating pores are blocked by guanidine derivatives as well as trivalent and quadrivalent cations. Gating pores can be used to study the movement of the voltage sensor and could serve as targets for novel small therapeutic molecules.
5.—Adiabatic Motion in a Charged Particle Trap
Authors: Byrne J. 
Published: November 2014

SynopsisThe adiabatic invariants associated with the motion of charged particles, trapped in electromagnetic fields with rotational and reflection symmetry, have been studied using classical methods based on the Hamilton-Jacobi equation. It has been shown that results, valid for trapping in purely magnetic configurations, may be applied in the analysis of electromagnetic charged particle traps, provided that suitably modified expressions are used for the angular frequencies in the various dynamical modes. Attention is drawn to circumstances in which the adiabatic conditions may be violated because of cancellation of electric and magnetic terms in the equations.
Structural investigation of tungsten bronze-type relaxor ferroelectrics in the BaxSr3−xTiNb4O15system
Authors: Whittle Thomas A. , Schmid Siegbert 
Published: November 2014

Compounds in the BaxSr3−xTiNb4O15series withx = 0.0–3.0 were synthesised. Synchrotron X-ray diffraction data were collected for each member synthesised. Rietveld refinements were performed for all compositions. A composition-dependent phase transition between orthorhombic and tetragonal symmetries was found. Cation ordering was observed between barium and strontium atoms in the two distinctAsite cavities
Multidimensional infinite data in the language Lucid
Authors: BECK JARRYD P. , PLAICE JOHN , WADGE WILLIAM W. 
Published: November 2014

Although the language Lucid was not originally intended to support computing with infinite data structures, the notion of (infinite) sequence quickly came to the fore, together with a demand-driven computation model in which demands are propagated for the values of particular values at particular index points. This naturally generalized to sequences of multiple dimensions so that a programmer could, for example, write a program that could be understood as a (nonterminating) loop in which one of the loop variables is an infinite vector.Programmers inevitably found use for more and more dimensions, which led to a problem which is fully solved for the first time in this paper. The problem is that the implementation's cache requires some estimate of the dimensions actually used to compute a value being fetched. This estimate can be difficult or (if dimensions are passed as parameters) impossible to obtain, and the demand-driven evaluation model for Lucid breaks down.We outline the evolution of Lucid which gave rise to this problem, and outline the solution, as used for the implementation of TransLucid, the latest descendant of Lucid.
Higher HDL Cholesterol Is Associated with Better Cognitive Function: the Maine-Syracuse Study
Authors: Crichton Georgina E. , Elias Merrill F. , Davey Adam , Sullivan Kevin J. , Robbins Michael A. 
Published: November 2014

AbstractFew studies have examined associations between different subcategories of cholesterol and cognitive function. We examined relationships between total cholesterol (TC), high-density lipoprotein cholesterol (HDL), low-density lipoprotein cholesterol (LDL), triglyceride levels and cognitive performance in the Maine-Syracuse Longitudinal Study, a community-based study of cardiovascular risk factors. Cross-sectional analyses were undertaken on data from 540 participants, aged 60 to 98 years, free of dementia and stroke. TC, HDL, LDL, and triglyceride levels were obtained. Cognitive function was assessed using a thorough neuropsychological test battery, including domains of cognitive function indexed by multiple cognitive tests. The cognitive outcomes studied were as follows: Visual-Spatial Memory and Organization, Verbal and Working Memory, Scanning and Tracking, Abstract Reasoning, a Global Composite score, and the Mini-Mental State Examination (MMSE). Significant positive associations were observed between HDL-cholesterol and the Global Composite score, Working Memory, and the MMSE after adjustment for demographic and cardiovascular risk factors. Participants with desirable levels of HDL (≥60 mg/dL) had the highest scores on all cognitive outcomes. There were no significant associations observed between TC, LDL, or triglyceride concentrations and cognition. In older individuals, HDL-cholesterol was related to a composite of Working Memory tests and for general measures of cognitive ability when adjusted for cardiovascular variables. We speculate that persons over 60 are survivors and thus less likely to show cognitive deficit in relation to TC, LDL-cholesterol, and triglycerides. Longitudinal studies are needed to examine relations between specific cognitive abilities and the different subcategories of cholesterol. (JINS, 2014, 20, 1–10)
Validity of the Dynamic Wisconsin Card Sorting Test for Assessing Learning Potential in Brain Injury Rehabilitation
Authors: Boosman Hileen , Visser-Meily Johanna M.A. , Ownsworth Tamara , Winkens Ieke , Van Heugten Caroline M. 
Published: November 2014

AbstractThe dynamic Wisconsin Card Sorting Test (dWCST) examines the effects of brief training on test performance where pre- to post-test change reflects learning potential. The objective was to examine the validity of the dWCST as a measure of learning potential in patients with acquired brain injury (ABI). A total of 104 patients with ABI completed the dWCST at rehabilitation admission. Performance of a subgroup (n=63) was compared to patients (n=28) who completed a repeated administration of the conventional WCST (rWCST). Furthermore, dWCST performance was compared between patients with ABI (n=63) and healthy controls (n=30) matched on gender, age, and education. Three learning potential indices were used: post-test score, gain score, and a group classification (decliners, poor learners, strong learners, high achievers). The median dWCST administration time was 30 min. The dWCST showed no floor or ceiling effects and the post-test and gain score were significantly intercorrelated. The pre-test score showed no significant associations with other neuropsychological tests. The learning potential indices were significantly associated with language and/or memory. In contrast to the dWCST group, the rWCST group showed no significant pre- to post-test improvement. There were significantly more poor learners in the rWCST group. Compared to controls, patients obtained similar gains, but significantly lower pre- and post-test scores for the dWCST. The ratio of poor learners between-groups was not significantly different. The results support the validity of the dWCST for assessing learning potential in patients with ABI. Further research is needed to investigate the predictive validity of the dWCST. (JINS, 2014, 20, 1–11)
Missing portion sizes in FFQ – alternatives to use of standard portions
Authors: Køster-Rasmussen Rasmus , Siersma Volkert , Halldorsson Thorhallur I , de Fine Olivarius Niels , Henriksen Jan E , Heitmann Berit L 
Published: November 2014

AbstractObjectiveStandard portions or substitution of missing portion sizes with medians may generate bias when quantifying the dietary intake from FFQ. The present study compared four different methods to include portion sizes in FFQ.DesignWe evaluated three stochastic methods for imputation of portion sizes based on information about anthropometry, sex, physical activity and age. Energy intakes computed with standard portion sizes, defined as sex-specific medians (median), or with portion sizes estimated with multinomial logistic regression (MLR), ‘comparable categories’ (Coca) ork-nearest neighbours (KNN) were compared with a reference based on self-reported portion sizes (quantified by a photographic food atlas embedded in the FFQ).SettingThe Danish Health Examination Survey 2007–2008.SubjectsThe study included 3728 adults with complete portion size data.ResultsCompared with the reference, the root-mean-square errors of the mean daily total energy intake (in kJ) computed with portion sizes estimated by the four methods were (men; women): median (1118; 1061), MLR (1060; 1051), Coca (1230; 1146), KNN (1281; 1181). The equivalent biases (mean error) were (in kJ): median (579; 469), MLR (248; 178), Coca (234; 188), KNN (−340; 218).ConclusionsThe methods MLR and Coca provided the best agreement with the reference. The stochastic methods allowed for estimation of meaningful portion sizes by conditioning on information about physiology and they were suitable for multiple imputation. We propose to use MLR or Coca to substitute missing portion size values or when portion sizes needs to be included in FFQ without portion size data.
Tracking of body size from birth to 7 years of age and factors associated with maintenance of a high body size from birth to 7 years of age – the Norwegian Mother and Child Cohort study (MoBa)
Authors: Kristiansen Anne Lene , Bjelland Mona , Brantsæter Anne Lise , Haugen Margaretha , Meltzer Helle Margrete , Nystad Wenche , Andersen Lene Frost 
Published: November 2014

AbstractObjectiveTo examine tracking of body size among children participating in the Norwegian Mother and Child Cohort Study (MoBa) from birth to 7 years of age and additionally to explore child and parental characteristics associated with maintenance of a high body size in this period of life.DesignAnthropometric data at birth and at 1, 3 and 7 years of age were collected by questionnaires addressed to the mother.SettingParticipants were recruited from all over Norway during the period 1999–2008.SubjectsA total of 3771 children had complete anthropometric data at birth and at 1, 3 and 7 years of age; the sample includes children born between 2002 and 2004.ResultsCohen’s weighted kappa pointed to fair (0·36) to moderate (0·43) tracking of body size from birth to 7 years of age. Generalized estimating equations further indicated that children in the highest tertile of ponderal index at birth had nearly one unit higher BMI (kg/m2) at the age of 7 years compared with children in other tertiles of ponderal index at birth. Having parents with high BMI (≥25·0 kg/m2) increased the odds of having a stable high body size from birth to 7 years of age; moreover, girls had significantly higher odds compared with boys.ConclusionsThe study indicates fair to moderate tracking of body size from birth to 7 years of age. From a public health perspective, early prevention of childhood overweight and obesity seems to be especially important among children of parents having a high BMI.
The clinical syndrome of BRD: what it is and what it is not
Authors: Apley Michael 
Published: November 2014

AbstractThe clinical syndrome of bovine respiratory disease (BRD) continues to be a major challenge in bovine production systems. We are challenged by our ability to predict morbidity in groups of cattle, our ability to accurately diagnose and provide a prognosis for individual cases, and our ability to evaluate the results of preventive and therapeutic interventions in the field when production system data are the sole basis for analysis. However, we are fortunate to have perhaps the highest quantity and quality of negative-controlled, prospective, randomized, and masked clinical trial data for any disease in veterinary medicine. It is nevertheless important to recognize that case definitions in these studies may not be consistent or necessarily externally relevant, and that production data in these studies are often missing.
Control of BRD in large dairy calf populations
Authors: Lehenbauer Terry W. 
Published: November 2014

AbstractBovine respiratory disease (BRD) is a leading cause of morbidity and mortality in dairy calves. As the number of calves being raised on the dairy farm or at a calf-raising operation has become larger, both opportunity and risk have increased. Opportunities for applying economies of size and scale exist in these large dairy calf populations while meeting specific needs of the dairy calf. BRD control requires effective biosecurity and biocontainment efforts, adequate passive transfer of immunoglobulins, a strategic immunization program, and appropriate diagnostic strategies for ongoing disease surveillance. These components are necessary to achieve an evidence-based approach for preventing and reducing severity of BRD cases. Proper nutrition, housing, and environmental management are important for achieving optimal dairy calf health and performance. Good record keeping and analysis of outcomes are needed to document dairy calf health and performance and to efficiently identify new problems that require attention in these large dairy calf populations. Proper management of calves to prevent and control BRD requires careful planning and follow through to achieve those results but will likely pay big dividends in improved calf health and future productivity.