bluuebunny/crossref_metadata_2025_split huggingface dataset:
Poiseuille-Couette Flow and Heat Transfer in an Inclined Channel for Composite Porous Medium
Authors: Liu I-C. , Wang H.-H. , Umavathi J. C. 
Published: March 2012

ABSTRACTConvective flow and heat transfer in an inclined channel bounded by two rigid plates is studied, where the lower plate is fixed and upper plate is moving with a constant velocity. One of the regions filled with clear viscous fluid and the other region filled with the porous matrix saturated with a viscous fluid different from the fluid in the first region are considered. The coupled nonlinear equations are mainly solved numerically using finite difference method. It is found that the presence of porous matrix in one of the region reduces the velocity and temperature. Both the velocity and temperature profiles enhance as the values of buoyancy parameter GP, height ratio h, Brinkman number Br, density ratio n and thermal expansion ratio b increase but reduce as the values of porous parameter σ, viscosity ratio λand thermal conductivity ratio λT increase. The Nusselt numbers at upper plate diminish as GP, h and Br increase, whereas they increase as σ, λ and λT increase. The lower plate Nusselt numbers are reversely affected by the relevant parameters. The effect of σ and GP on shear stress profiles are drawn and discussed.
Free Vibration of Cross Ply Laminated Beams with Multiple Distributed Piezoelectric Actuators
Authors: Khdeir A. A. , Darraj E. , Aldraihem O. J. 
Published: March 2012

ABSTRACTAnalytical solution is obtained for the free vibration of cross-ply laminated beams with multiple distributed extension piezoelectric actuators. The piezoelectric actuators are bonded at local position on the beam surface. The beam structure can contain one pair or two pairs or n pairs of piezoelectric actuators and it can be symmetric or unsymmetric about its mid-plane. The equations of motion and associated boundary conditions are derived for the beam model using Hamilton's principle. The state-space approach is used to find accurate natural frequencies and mode shapes for arbitrary combinations of boary conditions. The exact analytical solutions obtained are illustrated numerically in a number of figures revealing the influences of varying some parameters for the symmetric and unsymmetric cross-ply laminated beam for different type of piezoelectric actuators cases. The first order shear deformation beam theory (FOBT) is used to present the effect of actuators position and length on the nondimensional frequencies when one pair and two pairs of piezoelectric actuators are bonded at a local position on the beam surface.
Parametric Studies on Bending of Twisted Timoshenko Beams Under Complex Loadings
Authors: Chen W.-R. 
Published: March 2012

ABSTRACTStatic bending of a twisted Timoshenko beam subjected to combined transverse and axial loadings is studied. The equilibrium equations are established in the twist coordinates by applying the principle of minimum potential energy. The governing equations are then reduced into solvable algebraic equations using a finite element approach. The effects of the twist angle, thickness-to-width ratio, length-to-thickness ratio, loading and boundary conditions on the static bending characteristics of the twisted beams are investigated. The present parametric analyses will provide engineers a good insight into the influence of various structural aspects of the twisted beam on its response to different static loads.
The interplay of language ideologies and contextual cues in multilingual interactions: Language choice and code-switching in European Union institutions
Authors: Wodak Ruth , Krzyżanowski Michał , Forchtner Bernhard 
Published: March 2012

AbstractThis article analyzes multilingual practices in interactions inside European Union (EU) institutions. On the basis of our fieldwork conducted in EU organizational spaces throughout 2009, we explore different types of communication in order to illustrate how Members of the European Parliament (MEPs) and officials at the European Commission practice and perform multilingualism in their everyday work. In our theoretical and methodological framework, we draw on existent sociolinguistic ethnographical research into organizations and interactions, and integrate a multilevel (macro) contextual and sequential (micro) analysis of manifold data (observations, field notes, recordings of official and semi-official meetings, interviews, etc.). In this way, a continuum of context-dependent multilingual practices becomes apparent, which are characterized by different patterns of language choice and which serve a range of both manifest and latent functions. By applying the Discourse-Historical Approach (DHA) of Critical Discourse Studies (CDS), the intricacies of the increasingly complex phenomenon of multilingualism in transnational-organizational spaces, which are frequently characterized by diverse power-related and other asymmetries of communication, can be adequately coped with. (Code-switching, multilingualism, power, institutional spaces, European Union, ethnography, discourse-historical approach, critical discourse studies)*
The dynamics of embodied participation and language choice in multilingual meetings
Authors: Mondada Lorenza 
Published: March 2012

AbstractThis article deals with the organization of multilingual meetings, considering the interplay of multimodal resources constituting their interactional order. Using Conversation Analysis, it explores the mobilization of multimodal and multilingual resources by the participants in order to make possible, sustain, and change participation within a meeting. Moreover, it focuses on language choice as a situated and embodied achievement.The article's empirical contribution is a detailed analysis of a single case, an episode within a meeting in which several radical changes occur concerning language, participation, interactional space, and the categorization of the participants. The analysis explores the systematic organizational features characterizing the meeting before and after change, showing the embodied practices enabling a participant who was silent, sitting in the last row of the room, not speaking the language of the meeting, to become a recognized expert, thus changing the language of the meeting and reorganizing the opportunities to participate. (Conversation analysis, interactional linguistics, meetings, multilingualism, participation, multimodality, language choice, categorization, identity)*
UNACCEPTABLE RISKS AND THE CONTINUITY AXIOM
Authors: Jensen Karsten Klint 
Published: March 2012

Consider a sequence of outcomes of descending value, A > B > C > . . . > Z. According to Larry Temkin, there are reasons to deny the continuity axiom in certain ‘extreme’ cases, i.e. cases of triplets of outcomes A, B and Z, where A and B differ little in value, but B and Z differ greatly. But, Temkin argues, if we assume continuity for ‘easy’ cases, i.e. cases where the loss is small, we can derive continuity for the ‘extreme’ case by applying the axiom of substitution and the axiom of transitivity. The rejection of continuity for ‘extreme’ cases therefore renders the triad of continuity in ‘easy’ cases, the axiom of substitution and the axiom of transitivity inconsistent.As shown by Arrhenius and Rabinowitz, Temkin's argument is flawed. I present a result which is stronger than their alternative proof of an inconsistency. However, this result is not quite what Temkin intends, because it only refers to an ordinal ranking of the outcomes in the sequence, whereas Temkin appeals to intuitions about the size of gains and losses. Against this background, it is argued that Temkin's trilemma never gets off the ground. This is because Temkin appeals to two mutually inconsistent conceptions of aggregation of value. Once these are clearly separated, it will transpire, in connection with each of them, that one of the principles to be rejected does not appear plausible. Hence, there is nothing surprising or challenging about the result; it is merely a corollary to Expected Utility Theory.
Validation of presence of supermarkets and fast-food outlets in Copenhagen: case study comparison of multiple sources of secondary data
Authors: Svastisalee Chalida M , Holstein Bjørn E , Due Pernille 
Published: March 2012

AbstractObjectiveWe examined the quality of food outlet addresses provided by secondary sources and determined whether they could be physically located in the field.DesignAddresses of food outlets in fourteen school districts in the northern part of Copenhagen were obtained from multiple business locators. We geocoded 202 addresses using a geographic information system and cross-referenced the sources against each other using a validation grid. Physical presence was determined via street survey. We applied gamma statistics and calculated positive predictive value, sensitivity and percentage agreement to assess the overall correspondence between our test of physical presence and each source of secondary information.SettingThe study took place within city boundaries of Copenhagen, Denmark.SubjectsFood outlets within fourteen school districts within Copenhagen.ResultsPositive predictive value between field results and secondary sources indicated good to excellent correspondence (range: 0·81–0·98), comparable with other studies. Gamma coefficients indicated low to high positive correspondence (range: 0·23–0·98).ConclusionsDespite moderately high correspondence between secondary sources of address information and field observation, the findings illustrate that the use of combined sources is recommended.
Eating in response to hunger and satiety signals is related to BMI in a nationwide sample of 1601 mid-age New Zealand women
Authors: Madden Clara EL , Leong Sook Ling , Gray Andrew , Horwath Caroline C 
Published: March 2012

AbstractObjectiveTo examine the association between eating in response to hunger and satiety signals (intuitive eating) and BMI. A second objective was to determine whether the hypothesized higher BMI in less intuitive eaters could be explained by the intake of specific foods, speed of eating or binge eating.DesignCross-sectional survey. Participants were randomly selected from a nationally representative sampling frame. Eating in response to hunger and satiety signals (termed ‘intuitive eating’), self-reported height and weight, frequency of binge eating, speed of eating and usual intakes of fruits, vegetables and selected high-fat and/or high-sugar foods were measured.SettingNationwide study, New Zealand.SubjectsWomen (n 2500) aged 40–50 years randomly selected from New Zealand electoral rolls, including Māori rolls (66 % response rate; n 1601).ResultsIntuitive Eating Scale (IES) scores were significantly associated with BMI in an inverse direction, after adjusting for potential confounding variables. When controlling for confounding variables, as well as potential mediators, the inverse association between intuitive eating (potential range of IES score: 21–105) and BMI was only slightly attenuated and remained statistically significant (5·1 % decrease in BMI for every 10-unit increase in intuitive eating; 95 % CI 4·2, 6·1 %; P < 0·0 0 1). The relationship between intuitive eating and BMI was partially mediated by frequency of binge eating.ConclusionsEating in response to hunger and satiety signals is strongly associated with lower BMI in mid-age women. The direction of causality needs to be investigated in longitudinal studies and randomized controlled trials.
Gray Level Co-Occurrence Matrix Texture Analysis of Germinal Center Light Zone Lymphocyte Nuclei: Physiology Viewpoint with Focus on Apoptosis
Authors: Pantic Igor , Pantic Senka , Basta-Jovanovic Gordana 
Published: March 2012

AbstractIn our study we investigated the relationship between conventional morphometric indicators of nuclear size and shape (area and circularity) and the parameters of gray level co-occurrence matrix texture analysis (entropy, homogeneity, and angular second moment) in cells committed to apoptosis. A total of 432 lymphocyte nuclei images from the spleen germinal center light zones (cells in early stages of apoptosis) were obtained from eight healthy male guinea pigs previously immunized with sheep red blood cells (antigen). For each nucleus, area, circularity, entropy, homogeneity, and angular second moment were determined. All measured parameters of gray level co-occurrence matrix (GLCM) were significantly correlated with morphometric indicators of nuclear size and shape. The strongest correlation was observed between GLCM homogeneity and nuclear area (p< 0.0001,rs= 0.61). Angular second moment values were also highly significantly correlated with nuclear area (rs= 0.39,p< 0.0001). These results indicate that the GLCM method may be a powerful tool in evaluation of ultrastructural nuclear changes during early stages of the apoptotic process.
Predictors of caregiver distress among palliative home care clients in Ontario: Evidence based on the interRAI Palliative Care
Authors: Hirdes John P. , Freeman Shannon , Smith Trevor Frise , Stolee Paul 
Published: March 2012

AbstractObjective:This study examines predictors of caregiver distress among community-based palliative care clients. Analyses are based upon interRAI Palliative Care (interRAI PC) assessment data from palliative home care programs in three regions in Ontario, Canada.Method:The study sample involved all community-based palliative care clients in Ontario who were assessed with the interRAI PC as part of normal clinical practice during pilot implementation of the instrument between 2007 and 2009 (N = 3,929). The assessments were performed by trained case managers and were used as the basis for determining service needs to be addressed through services contracted from provider agencies. The main study outcome of interest was the presence of one or more indicators of caregiver distress: helper(s) unable to continue caring activities; primary informal helper expresses feelings of distress, anger, or depression; family or close friends report feeling overwhelmed by person's illness.Results:Caregiver distress was evident among about 22% of palliative home care clients. Multivariate analyses identified included clinical instability (Changes in Health, End Stage disease, Signs and Symptoms [CHESS] scale), depressive symptoms, cognitive impairment, and positive outlook as significant client-level predictors. Significant caregiver characteristics included hours of informal care. Three service use/provider variables were significant predictors of caregiver distress: the specific home care agency, hospitalizations in the last 90 days, and nursing visits.Significance of results:Caregiver distress affects approximately one in five palliative care clients in the community. This may lead to a number of adverse outcomes for the caregiver and client. The experience of distress is affected by client, caregiver, and agency characteristics that are readily identified by the interRAI PC assessment instrument. The present results point to the need for a care planning protocol that may be used on a targeted basis for clients experiencing or at elevated risk of caregiver distress.
Effect Of Pre-freeze Addition Of Cysteine Hydrochloride And Reduced Glutathione On Post-thaw Sperm Parameters And Field Fertility In Jersey Crossbred Bull Semen
Authors: Perumal P , Selvaraju S , Barik A.K. , Mohanty D. N. , Das Srinibas , Mishra P.C. 
Published: March 2012

AbstractThe present study was aimed to assess the effect of pre-freeze addition of cysteine hydrochloride and glutathione (GSH) on post-thaw sperm functional parameters and field fertility. The experimental bulls aged 4 to 6 years were used for the present study. A total of 36 ejaculates, 6 ejaculates from each bull (n=6) were collected and divided in to three groups, group I (control), group II (5mM cysteine hydrochloride) and group III (5mM GSH). The extended semen samples were added with @5mM additives, filled in mini straw using automatic filling and sealing machine (IMV, France) and cryopreserved in liquid nitrogen. Post-freeze seminal traits were also recorded after thawing at 37oC for 30 seconds. Post thaw livability was significantly (p< 0.01) higher in GSH group as compared to cysteine and control groups. The loss of acrosomal integrity was significantly (p< 0.01) lower in GSH group than cysteine and control groups. Analysis of variance for post thaw motility parameters (Forward progressive and Total motility) has revealed that significant difference (p< 0.05) between the good and poor freezer in the group II and there was no difference in the group I and III under study at 0 and 1 hr incubation period and at 2 hrs the group III and at 4 hrs group I has revealed significance difference (p< 0.05).The curvilinear velocity (VCL) and amplitude of lateral head displacement (ALH) values were significantly (P<0.05) higher in GSH than the cysteine and control groups. The Mitochondrial membrane potential (per cent) had no significance difference between the treatment groups. The present study indicates that the addition of cysteine and GSH suggestive of reducing lipid peroxide levels. The conception rate (%) in glutathione (68) added semen was significantly (p>0.05) higher than cysteine (58) and control (49) groups. The post-thaw sperm progressive forward motility (r=0.4) had moderate but, no significant correlation with conception rate. However post-thaw VSL (r=0.7), loss of acrosomal integrity (r=-0.8) and mitochondrial membrane potential (r=0.9) had significant (p< 0.05) correlation with field fertility. The present study indicates that the use of glutathione as semen additives may be recommended for improving semen quality and overall augmentation of pregnancy in cows. The present study suggests that pre-freeze addition of glutathione was found to be better than cysteine in improving sperm fertility.
High-intensity exercise attenuates postprandial lipaemia and markers of oxidative stress
Authors: Gabriel Brendan , Ratkevicius Aivaras , Gray Patrick , Frenneaux Michael P. , Gray Stuart R. 
Published: March 2012

Regular exercise can reduce the risk of CVD (cardiovascular disease). Although moderate-intensity exercise can attenuate postprandial TAG (triacylglycerol), high-intensity intermittent exercise might be a more effective method to improve health. We compared the effects of high-intensity intermittent exercise and 30 min of brisk walking on postprandial TAG, soluble adhesion molecules and markers of oxidative stress. Nine men each completed three 2-day trials. On day 1, subjects rested (control), walked briskly for 30 min (walking) or performed 5×30 s maximal sprints (high-intensity). On day 2, subjects consumed a high-fat meal for breakfast and 3 h later for lunch. Blood samples were taken at various times and analysed for TAG, glucose, insulin, ICAM-1 (intracellular adhesion molecule-1), VCAM-1 (vascular adhesion molecule-1), TBARS (thiobarbituric acid- reactive substances), protein carbonyls and β-hydroxybutyrate. On day 2 of the high-intensity trial, there was a lower (P&lt;0.05) incremental TAG AUC (area under the curve; 6.42±2.24 mmol/l per 7 h) compared with the control trial (9.68±4.77 mmol/l per 7 h) with no differences during day 2 of the walking trial (8.98±2.84 mmol/l per 7 h). A trend (P=0.056) for a reduced total TAG AUC was also seen during the high-intensity trial (14.13±2.83 mmol/l per 7 h) compared with control (17.18±3.92 mmol/l per 7 h), walking showed no difference (16.33±3.51 mmol/l per 7 h). On day 2 of the high-intensity trial plasma TBARS and protein carbonyls were also reduced (P&lt;0.05) when compared with the control and walking trials. In conclusion, high-intensity intermittent exercise attenuates postprandial TAG and markers of oxidative stress after the consumption of a high-fat meal.
Major Contributors to Hospital Mortality in Very-Low-Birth-Weight Infants: Data of the Birth Year 2010 Cohort of the German Neonatal Network
Authors: Stichtenoth G. , Demmert M. , Bohnhorst B. , Stein A. , Ehlers S. , Heitmann F. , Rieger-Fackeldey E. , Olbertz D. , Roll C. , Emeis M. , Mögel M. , Schiffmann H. , Wieg C. , Wintgens J. , Herting E. , Göpel W. , Härtel C. 
Published: March 2012

AbstractThe German Neonatal Network (GNN) is a prospective cohort study with the focus on long term development of very-low-birth-weight infants. It was the aim of this study to determine detailed information on causes of mortality in the GNN birth cohort 2010.Major contributors to hospital mortality were recorded by the attending neonatologists for the cohort of very-low-birth-weight (VLBW) infants born in centres of the German Neonatal Network (GNN) in 2010. The data quality was approved by on-site monitoring.2 221 VLBW infants were born in GNN centres in 2010, and death occurred in 221 infants. Male infants carried a higher risk than females (58.8% males among non-survivors vs. 51.7% among survivors, p=0.047). In 11 infants, the major contributor to death was not determined by the attending neonatologist. In 25 infants born at the limit of viability, comfort palliative care was primarily initiated and 14 infants had lethal malformations. The majority of non-survivors suffered from inflammatory diseases including sepsis- or necrotizing enterocolitis (NEC)-associated death (n=56). Respiratory pathology was a major contributor to death in 65 infants including 11 infants who died from pulmonary haemorrhage.Potentially preventable complications of preterm birth such as sepsis, NEC and pulmonary haemorrhage predominate the major contributors to mortality in the GNN 2010 cohort. In order to decrease the rate of these associated deaths, future trials should focus on prophylaxis and therapy optimization strategies for these outcomes.
Agronomic avenues to maximize the benefits of rising atmospheric carbon dioxide concentrations in asian irrigated rice systems.
Authors: Yang L. , Peng S. 
Published: March 2012

Abstract

This chapter summarizes the adaptation strategies of rice crops under the predicted future elevated CO2 conditions by examining the use of different cultivars and crop management practices, such as crop density adjustment, fertilizer application, irrigation, control of insect pests, diseases and weeds. Recommendations for future research priorities are given.