bluuebunny/crossref_metadata_2025_split huggingface dataset:
The nsBETI method: an extension of the FETI method to non‐symmetrical BEM‐FEM coupled problems
Authors: González José A. , Rodríguez‐Tembleque Luis , Park K.C. , Abascal Ramón 
Published: October 2012

SUMMARYThe finite element tearing and interconnecting (FETI) method is recognized as an effective domain decomposition tool to achieve scalability in the solution of partitioned second‐order elasticity problems. In the boundary element tearing and interconnecting (BETI) method, a direct extension of the FETI algorithm to the BEM, the symmetric Galerkin BEM formulation, is used to obtain symmetric system matrices, making possible to apply the same FETI conjugate gradient solver. In this work, we propose a new BETI variant labeled nsBETI that allows to couple substructures modeled with the FEM and/or non‐symmetrical BEM formulations. The method connects non‐matching BEM and FEM subdomains using localized Lagrange multipliers and solves the associated non‐symmetrical flexibility equations with a Bi‐CGstab iterative algorithm. Scalability issues of nsBETI in BEM–BEM and combined BEM–FEM coupled problems are also investigated. Copyright © 2012 John Wiley & Sons, Ltd.
Alternative approaches to decreasing maternal anemia: identifying the need for social marketing strategies to promote iron‐folic acid supplementation in the Peruvian highlands
Authors: Shaw Alina , Golding Lenette , Girard Aimee Webb 
Published: October 2012

Anemia is the most common health condition affecting women during pregnancy, and leads to adverse health outcomes of both the mother and infant. Despite national fortification and supplementation programs in Peru, 21% of women of reproductive age are anemic. Adherence to iron‐folic acid (IFA) supplements in this vulnerable population is low and influenced by side effects of the tablets, such as nausea and vomiting, caused by the generic formula of the tablets. The trust within a patient–provider relationship and the provider's competency at effective counseling increases women's adherence, whereas late entry into prenatal care and government regulations limit early initiation of IFA supplementation. It is important for partners to support women during supplementation and participate in their prenatal care. Social marketing strategies targeting the product, price, place, promotion, and policy of IFA supplements should decrease barriers to women's ability to obtain IFA tablets and adhere to the supplementation regimen and reduce iron deficiency maternal anemia. Public health practitioners implementing supplementation programs should consider different behavioral influences at the intrapersonal, interpersonal, and community levels that affect adherence.Copyright © 2012 John Wiley & Sons, Ltd.
Methodologies for the detection of adverse drug reactions: comparison of hospital databases, chart review and spontaneous reporting
Authors: Miguel Ana , Azevedo Luís Filipe , Lopes Fernando , Freitas Alberto , Pereira Altamiro Costa 
Published: October 2012

ABSTRACTPurposeTo evaluate a methodology for adverse drug reactions (ADRs) detection through hospital databases.MethodsA retrospective analysis was conducted to identify ADRs using diagnostic codes from databases, later validated by chart review. An independent chart review was performed for comparison, as well as assessment of spontaneous reports.Results325 ADRs were identified (prevalence of 2.41%, positive predictive value of 87.6%). Independent chart review identified 9% of ADRs at a cost of 35 person‐hours (versus two person‐hours in databases). There were seven spontaneous reports of ADRs.ConclusionsAlthough not frequently used, the detection of ADRs through databases is a relatively less expensive, fast and effective methodology that can improve current pharmacovigilance systems. Copyright © 2012 John Wiley & Sons, Ltd.
New directions for an old construct: Depressive personality research in the DSM‐5 era
Authors: Huprich Steven 
Published: October 2012

ABSTRACTThe DSM‐5 Personality and Personality Disorders Work Group has suggested that the DSM‐IV depressive personality disorder (DPD) construct be assessed within a proposed set of trait domains, which include anxiousness, depressivity, and anhedonia, and that the diagnostic category itself be removed from the DSM‐5. A review of studies on DPD has demonstrated many challenges and limitations to DPD research, despite strong evidence of its validity and clinical utility. Nevertheless, there remains much interest in how a depressive personality construct fits into a dimensionalized framework of assessing psychopathology. In this paper, I offer three major research directions that can help advance our understanding of the depressive personality construct. These directions can inform researchers and clinicians how depressive personality fits within broad trait dimensions of classification, as well as the internal psychological processes, dynamics and content that characterize this type of psychopathology. Copyright © 2012 John Wiley & Sons, Ltd.
New on‐line methods for determining the deuterium/hydrogen composition of water and hydrocarbon gases using O2– ion‐conducting solid electrolyte reactor
Authors: Sevastyanov Vyacheslav S. , Pedentchouk Nikolai , Babulevich Nataliya E. , Galimov Eric M. 
Published: October 2012

RATIONALEThe deuterium/hydrogen (D/H) composition of water and hydrocarbon gases is widely used in geological, environmental and petroleum studies. The aim of this work was to develop a simple reduction zirconium dioxide solid electrolyte reactor (SER) for water decomposition and new methods for measuring hydrogen isotope ratios in water and hydrocarbon gases.METHODSδ2HVSMOW values were determined using two new different on‐line methods: solid electrolyte reactor isotope ratio mass spectrometry (SER‐IRMS) for water and gas chromatography combustion solid electrolyte reactor isotope ratio mass spectrometry (GC‐C‐SER‐IRMS) for hydrocarbon gases.RESULTSWe have designed a solid electrolyte reactor based on oxygen ion‐conducting zirconium dioxide stabilized by yttria (Y2O3). The reactor was used for catalytic electrochemical decomposition of water in a helium carrier gas. The solid electrolyte reactor has a small internal volume of 0.1 cm3. It was operated at a temperature of ~950 °C. The total time of analysis for determining the hydrogen isotope ratio in water was 150 s. A typical water sample volume was about 0.2 μL (split ratio 500:1). The precision of the δ2HVSMOW measurements for water was better than or equal to 2.2‰ and that for hydrocarbon gases was within 0.5–3.0‰.CONCLUSIONSFast, simple and accurate on‐line methods (SER‐IRMS and GC‐C‐SER‐IRMS) were developed. The SER‐IRMS method makes it possible to work with small water samples. Although the GC‐C‐SER‐IRMS method was developed for hydrocarbons, it can also be used for other organic gases and their mixtures. The new solid electrolyte reactor for water decomposition is low cost and the ceramic tube is inexpensive. Copyright © 2012 John Wiley & Sons, Ltd.
On the control of Markov jump linear systems with no mode observation: application to a DC Motor device
Authors: Vargas Alessandro N. , Costa Eduardo F. , do Val João B.R. 
Published: October 2012

SUMMARYThis paper deals with the control problem of discrete‐time Markov jump linear systems for the case in which the controller does not have access to the state of the Markov chain. A necessary optimal condition, which is nonlinear with respect to the optimizing variables, is introduced, and the corresponding solution is obtained through a variational convergent method. We illustrate the practical usefulness of the derived approach by applying it in the control speed of a real DC Motor device subject to abrupt power failures.Copyright © 2012 John Wiley & Sons, Ltd.
Continuous adaptive observer for state affine sampled‐data systems
Authors: Hann Cheikh A.B. , Ahmed‐Ali Tarek 
Published: October 2012

SUMMARYIn this paper, a hybrid adaptive observer is designed for a class of nonlinear sampled‐data systems with constant unknown parameters. The proposed observer uses a predictor of the output between the sampling times. This predictor is re‐initialized at each sampling time. This observer is very simple to implement and converges exponentially under some sufficient conditions. An explicit relation between the bound of the maximum allowable sampling time (τMASP) and the parameters of the observer is also given. Copyright © 2012 John Wiley & Sons, Ltd.
MULTIPLICATIVE LOSS OF LANDLOCKED ATLANTIC SALMON Salmo salar L. SMOLTS DURING DOWNSTREAM MIGRATION TROUGH MULTIPLE DAMS
Authors: Norrgård J. R. , Greenberg L. A. , Piccolo J. J. , Schmitz M. , Bergman E. 
Published: October 2012

ABSTRACTRelatively little is known about the downstream migration of landlocked stocks of Atlantic salmon Salmo salar L. smolts, as earlier migration studies have generally focused on upstream migration. However, in watersheds with many hydroelectric plants (HEPs), multiplicative loss of downstream‐migrating salmon smolts can be high, contributing to population declines or extirpations. Here we report the results from a study of wild landlocked Atlantic salmon smolts in the River Klarälven. Salmon smolts, tagged with acoustic transmitters, were released at different locations and followed as they passed 37 receivers along a 180‐km‐long river segment, including eight dams as well as free‐flowing control stretches. We found that 16% of the smolts successfully migrated along the entire river segment. Most losses occurred during HEP passages, with 76% of the smolts being lost during these passages, which contrasts with the 8% smolt loss along unregulated control stretches. Migration speed was 83% slower along regulated stretches than along unregulated stretches. The observed lower migration speed at regulated stretches was dependent on fish size, with large fish moving slower than small fish. Discharge affected migration speed but not losses. As previously shown for anadromous populations, our study of landlocked salmon demonstrates similar negative effects of multiple passages of HEPs by downstream‐migrating smolts. On the basis of this and previous migration studies, we advocate using a holistic approach in the management and conservation of migratory fish in regulated rivers, which includes safe passage for both upstream‐ and downstream‐migrating fish. Copyright © 2012 John Wiley & Sons, Ltd.
Beginn der Brückenschweißung vor 80 Jahren
Authors: Braun Michael 
Published: October 2012

AbstractDer nachfolgende Beitrag soll einen vor ca. acht Jahrzehnten vollzogenen, mühevollen aber auch sehr mutigen Schritt deutscher Ingenieure und Stahlfachleute beschreiben. Vor rund 80 Jahren begann der Einzug der Schweißtechnik in den Stahlbrückenbau langsam Fahrt aufzunehmen und sich alsbald in einen Siegeszug zu entwickeln. Die Sorge vor Versagen war dennoch nicht frugal, waren doch Brücken per se hohen und zudem ständig wechselnden statischen und dynamischen Beanspruchungen ausgesetzt. In der Nachschau indes kann festgehalten werden, dass es, gemessen an der doch revolutionären Veränderung des Fügeprozesses, zu nachgerade erstaunlich wenigen Versagensfällen gekommen ist.Als dezidiert entschiedensten Befürworter und Förderer der Schweißtechnik im deutschen Stahlbrückenbau muss man Gottwalt Schaper bezeichnen. Nicht zuletzt deshalb sind im nachstehenden Beitrag überdurchschnittlich viele Verweise auf seine Urheberschaft zu finden, wie überhaupt gerade dieses Thema als eine Hommage an Schaper außerordentlich geeignet erscheint.
A systemic review of shipboard SCR installations in practice
Authors: Österman Cecilia , Magnusson Mathias 
Published: October 2012

AbstractGrowing customer demands and more stringent regulations to reduce harmful air emissions from ships have resulted in an increased interest for the installation of shipboard abatement technologies. Specifically, the selective catalytic reduction (SCR) technology to reduce emissions of nitrogen oxides (NOx) was early adopted by several Swedish shipping companies. The potential NOxreduction efficiency of the SCR is well established, but the practical experiences of shipboard installations have been less documented. This paper reviews from a systems perspective the practical experiences of marine SCR installations in Swedish shipping. The aim is to identify important not only technical but also human and organizational conditions necessary for safe, efficient, and sustainable SCR operations at sea. Further, to investigate to what extent the capabilities and limitations of human operators and maintainers are taken into account in the design and installation phase of the systems. Two focus group interviews (n = 10) and five individual interviews were held with relevant stakeholders in the industry, following a semi-structured schedule on the themes installation, operation, maintenance, and training. The results show that deficiencies in the overall system design—with a combination of technical issues, maintenance access problems, and untrained operators with inadequate understanding of the SCR process—have led to inefficient, costly, and unsafe operations. It is concluded that installations and operations of marine SCR systems, and possibly other forthcoming abatement technologies, would benefit from the use of traditional ergonomic principles and methods. This would in turn contribute towards increased sustainability and a reduced environmental impact from shipping.
Effects of high-fat chow on heart tissue in acute and chronic experimental murine schistosomiasis mansoni
Authors: GÓES V. C. , NEVES R. H. , ALENCAR A. C. M. B. , OLIVEIRA A. V. , GOMES D. C. , MACHADO-SILVA J. R. 
Published: October 2012

SUMMARYThis study aimed to investigate myocardial injuries in mice infected with Schistosoma mansoni and fed a high-fat chow. Sections of myocardial tissue from S. mansoni-infected mice, and controls that had been killed 9 and 17 weeks post-infection, were stained with H&E and Picrosirius red. Histopathological examination, stereological design-based method (optical disector) and morphometry (vessels, cardiomyocytes and an amount of collagen) were used. Data were analysed using two-way ANOVA. Regardless of time of infection, myocardial tissue from the infected mice fed high-fat chow showed myocarditis characterized by a higher number of inflammatory foci, several areas displaying coagulation of cardiac fibres, a greater loss of cardiomyocytes and fibroblast proliferation than in the standard chow control. Comparing infected mice from acute and chronic infections, a higher cardiomyocyte hyperplasia (P < 0·0001) and higher amounts of collagen (P < 0·05) were observed than in standard chow control. In addition, all animals fed high-fat chow showed lower numerical density and total number of cardiomyocytes (P < 0·05), thicker vessel walls and narrowed luminal intramyocardial vessels (P > 0·05) than in the standard chow control. Altogether the data supported the view that a double burden has a synergistic deleterious effect on the myocardial tissue.
The role of the invasive polychaete Ficopomatus enigmaticus (Fauvel, 1923) (Serpulidae) as facilitator of parasite transmission in Mar Chiquita coastal lagoon (Buenos Aires, Argentina)
Authors: ETCHEGOIN J. A. , MERLO M. J. , PARIETTI M. 
Published: October 2012

SUMMARYIn Mar Chiquita coastal lagoon (Argentina), the reefs of the invasive polychaete Ficopomatus enigmaticus (Serpulidae) serve as concentration areas for invertebrates and vertebrates and as potential foci of parasite transmission (mainly digeneans). To analyse the role of F. enigmaticus as facilitator of parasite transmission, and to evaluate the influence of the habitats selected by 2 species of cochliopid snails (Heleobia conexa and Heleobia australis), on the richness and on the prevalence of the digenean assemblages that parasitize them, 1945 snails were collected from 2 sampling sites. The comparisons between larval digenean communities parasitizing both snail hosts revealed significant differences related to the overall prevalence and the prevalence contributed by birds in the snails collected from reefs. These results support the idea that the reefs may increase the number of links between intermediate and definitive hosts of digeneans, facilitating parasite transmission only when the aggregates of F. enigmaticus become the unique habitat of the snail host. This first report of an exotic species acting as facilitator of parasite transmission in an estuarine area highlights the importance of analysing the effects of the assimilation process of exotic species by recently colonized environments (including the possible effects on parasite transmission).
On bubble and spike oscillations in a dusty gas Rayleigh-Taylor instability
Authors: Balakrishnan Kaushik 
Published: October 2012

AbstractThe Multiphase Buoyancy-Drag model recently formulated in Balakrishnan & Menon, Laser and Particle Beams, 2011 is applied to investigate the (1) rise of dusty gas Rayleigh-Taylor bubbles into a pure gas and (2) fall of pure gas Rayleigh-Taylor spikes into a region of particles. It is demonstrated that for these two scenarios, the bubble or spike amplitude oscillates about the dusty gas/pure gas interface. The ratio of the bubble or spike amplitudes on the pure gas side to the dusty gas side, asymptotes to a constant that depends only on the initial Atwood number, A, the multiphase Atwood number, Am, and the initial wavelength of the perturbation, λo. For the same Am, the ratio decreases with A for oscillating bubbles, and vice versa for oscillating spikes.
Peri-operative care in adults with congenital heart disease: room for improvement in after care
Authors: Schoormans Dounya , Smets Ellen M. A. , Zwart Ronald , Sprangers Mirjam A. G. , Veelenturg Tonny H. M. , de Mol Bas A. J. M. , Hazekamp Mark G. , Koolbergen Dave R. , Sojak Vladimir , Bouma Berto J. , Groenink Maarten , Boekholdt Matthijs S. M. , Backx Ad P. C. M. , Mulder Barbara J. M. 
Published: October 2012

AbstractBackgroundPatient satisfaction with care has received little attention within the field of congenital heart disease. Our objective was to examine patient satisfaction with the care received when undergoing open-heart surgery in order to identify the best and worst aspects of peri-operative care. Moreover, we examined whether having contact with a specialised nurse in addition to usual care is associated with higher patient satisfaction levels.MethodsPatient satisfaction was measured by the Satisfaction with Hospital Care Questionnaire, evaluating nine aspects of care by answering individual items and giving overall grades. A top 10 of the best and worst items was selected. Linear regression analyses were used to examine the relationship between having contact with a specialised nurse and patient satisfaction (9 grades), independent of patient characteristics – sex, age, educational level, and health status.ResultsData were available for 75 patients. Grades ranged from 6.74 for “discharge and after care” to 8.18 for “medical care”. In all, 21% of patients were dissatisfied with the clarity of the information about lifestyle adjustments given by the surgeon. However, patients who had contact with a specialised nurse were more satisfied with the provided information (B-coefficient is 0.497, p-value is 0.038), independent of patient characteristics.ConclusionsPatients were satisfied with the received care, although there is room for improvement, especially in discharge and after care and the clarity of the information provided by the surgeon. This gap in care can be compensated for by specialised nurses, as patients who were counselled by a specialised nurse were more satisfied with the provided information.
Necrotising enterocolitis in infants with congenital heart disease: the role of enteral feeds
Authors: Iannucci Glen J. , Oster Matthew E. , Mahle William T. 
Published: October 2012

AbstractObjectiveNecrotising enterocolitis is a rare, though catastrophic complication that may occur in term newborns with congenital heart disease. There is considerable controversy regarding the factors that lead to necrotising enterocolitis in this population. We sought to determine the incidence of necrotising enterocolitis among term and near-term newborns with congenital heart disease, focusing on the relationship of enteral feeding to this complication.MethodsIn this retrospective study, we identified the incidence of necrotising enterocolitis among 1551 newborns admitted to our cardiac intensive care unit between July 1, 2002 and July 1, 2010. In order to understand the impact of enteral feeding upon the development of necrotising enterocolitis, we undertook a nested 2:1 matched case–control analysis to compare feeding patterns in an age- and lesion-matched control population.ResultsNecrotising enterocolitis developed in 45 term or near-term infants (3%). The majority of these cases, 27 (60%), occurred in the post-operative period after the introduction of enteral feeds. This subgroup was used for matched analysis. There were no differences in enteral feeding patterns among the patients who developed necrotising enterocolitis and their matched controls. The overall mortality rate for patients who developed necrotising enterocolitis was 24.4% (11 out of 45).ConclusionsDespite numerous advances in the care of infants with congenital heart disease, necrotising enterocolitis remains a significant source of morbidity and mortality. In these infants, there is no clear relationship between enteral feeding patterns and the development of necrotising enterocolitis in the post-operative period. The benefits of graduated feeding advancements to avoid the development of necrotising enterocolitis remain unproven.
Analysis of Presentations to On-site Medical Units During World Youth Day 2008
Authors: Tyner Sophie E. , Hennessy Louise , Coombs Lisa J. , Fizzell Jan 
Published: October 2012

AbstractWorld Youth Day 2008 was held in Sydney, Australia in July 2008. New South Wales (NSW) Health, the government health provider in Australia's most populous state, worked with partner agencies to provide medical services via on-site medical units at key event venues.A post-event review of medical records from the on-site medical units indicated 465 patient presentations, comprised largely of infectious respiratory symptoms and general health concerns of a primary care nature. Providing on-site health services is considered an important risk-mitigation action for many mass gatherings, especially those that generate a substantial temporary population of participants and take place over a number of days.TynerSE,HennessyL,CoombsLJ,FizzellJ.Analysis of presentations to on-site medical units during World Youth Day 2008.Prehosp Disaster Med.2012;27(6):1-6.