bluuebunny/crossref_metadata_2025_split huggingface dataset:
Interpreting Social Identity in Online Brand Communities: Considering Posters and Lurkers
Authors: Mousavi Sahar , Roper Stuart , Keeling Kathleen A. 
Published: March 2017

ABSTRACTThis study investigates the psychological effects of social identity on both posters and lurkers in online brand communities (OBCs). The results reveal the intermediate mechanisms mediating and moderating members’ social identity effects on members’ brand commitment, leading to positive word‐of‐mouth and their resistance to negative information about the brand. This article treats social identity as a multidimensional construct. Differences between posters and lurkers on the relationships among the cognitive, affective, and evaluative components of social identity are investigated along with their positive effect on brand commitment and behavioral consequences. Using a sample of 752 OBC members, both posters and lurkers emerge as valuable members and equally likely to derive social identity from their membership of an OBC. However, there are counterintuitive results for relationships within the research model between active and passive members of OBCs. These results offer implications for theory and can help managers to be better interactive marketers.
Fostering Parasocial Relationships with Celebrities on Social Media: Implications for Celebrity Endorsement
Authors: Chung Siyoung , Cho Hichang 
Published: March 2017

ABSTRACTThe purpose of this study was to explore the underlying mechanisms through which the use of social media affects endorser effectiveness. Based on theories related to parasocial relationships, self‐disclosure, and celebrity endorsement, this study proposed a theoretical research model and empirically tested the model using online survey data collected from 400 Korean Wave fans in Singapore. The results showed that consumers’ parasocial interactions with celebrities though social media have a positive impact on celebrity endorsement. Specifically, we found that: (1) parasocial relationships mediated the relationships between social media interactions and source trustworthiness, (2) social media interactions influenced parasocial relationships via self‐disclosure; and (3) source trustworthiness had a positive effect on brand credibility, which, in turn, led to purchase intention. Implications for research and practice are discussed.
User profiles of an electronic mental health tool for ecological momentary assessment: MEmind
Authors: Barrigón María Luisa , Berrouiguet Sofian , Carballo Juan José , Bonal‐Giménez Covadonga , Fernández‐Navarro Pablo , Pfang Bernadette , Delgado‐Gómez David , Courtet Philippe , Aroca Fuensanta , Lopez‐Castroman Jorge , Artés‐Rodríguez Antonio , Baca‐García Enrique ,   MEmind study group
Published: March 2017

AbstractEcological momentary assessment (EMA) is gaining importance in psychiatry. This article assesses the characteristics of patients who used a new electronic EMA tool: the MEmind Wellness Tracker. Over one year, 13811 adult outpatients in our Psychiatry Department were asked to use MEmind. We collected information about socio‐demographic data, psychiatric diagnoses, illness severity, stressful life events and suicidal thoughts/behavior. We compared active users (N = 2838) and non‐active users (N = 10,973) of MEmind and performed a Random Forest analysis to assess which variables could predict its use. Univariate analyses revealed that MEmind‐users were younger (42.2 ± 13.5 years versus 48.5 ± 16.3 years;χ2 = 18.85;P < 0.001) and more frequently diagnosed with anxiety related disorders (57.9% versus 46.7%;χ2 = 105.92;P = 0.000) than non‐active users. They were more likely to report thoughts about death and suicide (up to 24% of active users expressed wish for death) and had experienced more stressful life events than non‐active users (57% versus 48.5%;χ2 = 64.65;P < 0.001). In the Random Forest analysis, 31 variables showed mean decrease accuracy values higher than zero with a 95% confidence interval (CI), including sex, age, suicidal thoughts, life threatening events and several diagnoses. In the light of these results, strategies to improve EMA and e‐Mental Health adherence are discussed.
On generation of lumped mass matrices in partition of unity based methods
Authors: Zheng Hong , Yang Yongtao 
Published: March 2017

SummaryThe partition of unity based methods, such as the extended finite element method and the numerical manifold method, are able to construct global functions that accurately reflect local behaviors through introducing locally defined basis functions beyond polynomials. In the dynamic analysis of cracked bodies using an explicit time integration algorithm, as a result, huge difficulties arise in deriving lumped mass matrices because of the presence of those physically meaningless degrees of freedom associated with those locally defined functions. Observing no spatial derivatives of trial or test functions exist in the virtual work of inertia force, we approximate the virtual work of inertia force in a coarser manner than the virtual work of stresses, where we inversely utilize the ‘from local to global’ skill. The proposed lumped mass matrix is strictly diagonal and can yield the results in agreement with the consistent mass matrix, but has more excellent dynamic property than the latter. Meanwhile, the critical time step of the numerical manifold method equipped with an explicit time integration scheme and the proposed mass lumping scheme does not decrease even if the crack in study approaches the mesh nodes — a very excellent dynamic property. Copyright © 2017 John Wiley & Sons, Ltd.
Reference values for TSH may be inadequate to define hypothyroidism in persons with morbid obesity: Di@bet.es study
Authors: Valdés Sergio , Maldonado‐Araque Cristina , Lago‐Sampedro Ana , Lillo‐Muñoz Juan Antonio , Garcia‐Fuentes Eduardo , Perez‐Valero Vidal , Gutiérrez‐Repiso Carolina , Garcia‐Escobar Eva , Goday Albert , Urrutia Inés , Peláez Laura , Calle‐Pascual Alfonso , Bordiú Elena , Castaño Luis , Castell Conxa , Delgado Elias , Menéndez Edelmiro , Franch‐Nadal Josep , Gaztambide Sonia , Girbés Joan , Ortega Emilio , Vendrell Joan , Chacón Matilde R. , Javier Chaves F. , Soriguer Federico , Rojo‐Martínez Gemma 
Published: March 2017

ObjectiveTo analyze the reference range of thyroid‐stimulating hormone (TSH) in different BMI categories and its impact on the classification of hypothyroidism.MethodsThe study included 3,928 individuals free of thyroid disease (without previous thyroid disease, no interfering medications, TSH <10 µUI/mL and thyroid peroxidase antibodies [TPO Abs] <50 IU/mL) who participated in a national, cross‐sectional, population‐based study and were representative of the adult population of Spain. Data gathered included clinical and demographic characteristics, physical examination, and blood and urine sampling. TSH, free thyroxine, free triiodothyronine, and TPO Ab were analyzed by electrochemiluminescence (E170, Roche Diagnostics, Basel, Switzerland).ResultsThe reference range (p2.5‐97.5) for TSH was estimated as 0.6 to 4.8 µUI/mL in the underweight category (BMI<20 kg/m2), 0.6 to 5.5 µUI/mL in the normal‐weight category (BMI 20‐24.9 kg/m2), 0.6 to 5.5 µUI/mL in the overweight category (BMI 25‐29.9 kg/m2), 0.5 to 5.9 µUI/mL in the obesity category (BMI 30‐39.9 kg/m2), and 0.7 to 7.5 µUI/mL in the morbid obesity category (BMI ≥40). By using the reference criteria for the normal‐weight population, the prevalence of high TSH levels increased threefold in the morbid obesity category (P < 0.01).ConclusionsPersons with morbid obesity might be inappropriately classified if the standard ranges of normality of TSH for the normal‐weight population are applied to them.
The Politics–Bureaucracy Interface in Developing Countries
Authors: Dasandi Niheer , Esteve Marc 
Published: March 2017

SummaryThe political–bureaucratic interface has been the subject of much academic interest. However, research has tended to focus exclusively on wealthy institutionalized democracies, with little attention given to the political–administrative relationship in developing countries. However, recent evidence from reform processes in poorer nations increasingly highlights the importance of interactions between politicians and bureaucrats. This paper provides a systematic overview of the political–bureaucratic relationship in developing countries and in doing so makes two key contributions. First, it introduces a typology of political–bureaucratic relations based on four models—collaborative, collusive, intrusive, and integrated—discussing examples of each. Second, it analyses the main factors associated with different models of political–bureaucratic relations and considers how countries can move from one model of relations to another. The paper provides a much‐needed entry point for scholars and policymakers to better understanding the relationship between politicians and bureaucrats in developing countries. Copyright © 2017 John Wiley & Sons, Ltd.
Deformation and pore formation mechanism under tensile loading in isotactic polypropylene
Authors: Ding Lei , Wu Tong , Yang Feng , Xiang Ming 
Published: March 2017

AbstractFour different polypropylene (PP) samples were prepared through isothermally crystallizing at 0 °C (PP‐Q), 80 °C (PP‐80), 100 °C (PP‐100) and 120 °C (PP‐120). The results of differential scanning calorimetry, wide‐angle X‐ray diffraction, polarized light microscopy and tensile testing indicate that the spherulite structure gradually improves with increasing isothermal crystallization temperature. Meanwhile, the interface between spherulites becomes more obvious due to the larger dimension and the higher strength of spherulites. Therefore, the trend of interfacial debonding during stretching is enhanced distinctly. In addition, based on the structural characterization of samples at different draw ratios, two completely distinct morphological changes are demonstrated. There are no defects generated after longitudinal stretching within PP‐Q, because intra‐spherulitic deformation predominates, which is caused by the imperfect spherulites of PP‐Q. As a result, no microporous structure is produced after sequential biaxial stretching. And the improvement of the crystalline structure makes interfacial debonding more likely to occur. Therefore, fully developed crazes and cracks disperse between microfibril structures after longitudinal stretching. Furthermore, numerous microporous structures are produced through debonding of fully developed crazes and cracks after sequential biaxial stretching. Meanwhile, the quantity, dimension and uniformity of the microporous structures and the porosity are gradually improved. © 2017 Society of Chemical Industry
A family 13 thioesterase isolated from an activated sludge metagenome: Insights into aromatic compounds metabolism
Authors: Sánchez‐Reyez Ayixon , Batista‐García Ramón Alberto , Valdés‐García Gilberto , Ortiz Ernesto , Perezgasga Lucía , Zárate‐Romero Andrés , Pastor Nina , Folch‐Mallol Jorge Luis 
Published: March 2017

ABSTRACTActivated sludge is produced during the treatment of sewage and industrial wastewaters. Its diverse chemical composition allows growth of a large collection of microbial phylotypes with very different physiologic and metabolic profiles. Thus, activated sludge is considered as an excellent environment to discover novel enzymes through functional metagenomics, especially activities related with degradation of environmental pollutants. Metagenomic DNA was isolated and purified from an activated sludge sample. Metagenomic libraries were subsequently constructed in Escherichia coli. Using tributyrin hydrolysis, a screening by functional analysis was conducted and a clone that showed esterase activity was isolated. Blastx analysis of the sequence of the cloned DNA revealed, among others, an ORF that encodes a putative thioesterase with 47–64% identity to GenBank CDS reported genes, similar to those in the hotdog fold thioesterase superfamily. On the basis of its amino acid similarity and its homology‐modelled structure we deduced that this gene encodes an enzyme (ThYest_ar) that belongs to family TE13, with a preference for aryl‐CoA substrates and a novel catalytic residue constellation. Plasmid retransformation in E. coli confirmed the clone's phenotype, and functional complementation of a paaI E. coli mutant showed preference for phenylacetate over chlorobenzene as a carbon source. This work suggests a role for TE13 family thioesterases in swimming and degradation approaches for phenyl acetic acid. Proteins 2017; 85:1222–1237. © 2017 Wiley Periodicals, Inc.
Method for CFD facilitated pressure rise calculation due to deflagration in heat recovery steam generator
Authors: Zhou Wei , Cardenas Manuel , Moyeda David 
Published: March 2017

For combined cycle operations, especially during startup and shutdown, safety concerns have always been the top priority. Residual fuels can escape to and accumulate in the downstream heat recovery steam generator (HRSG) if appropriate purge is not taken, which may cause deflagration, an explosion at subsonic condition, during startup when heat source exists. Residual fuel deflagration will lead to pressure rise and therefore, structural and or tube damages depending on the level of pressure increase. Therefore, a careful study of the residual fuel distribution in HRSG and the pressure rise due to possible deflagration is wanted.Historically, thermodynamics relationships and chemical equilibrium calculations are used to estimate the pressure rise. These approaches either assume that all fuel energy is converted into heat, or make assumptions on the amount of fuel in chemical equilibrium that contributes to the pressure rise. These assumptions tend to overestimate the pressure rise. With the development of computational fluid dynamics (CFD) simulation, a more accurate prediction of the fuel concentration in HRSG during transient startup and/or shutdown process is possible. The local fuel concentrations can now be calculated and therefore, how much fuel that are within the explosion limits and contribute to the pressure rise can be detected readily.This article presents the transient CFD modeling results of residual fuel concentration in a typical HRSG configuration during a gas turbine/combined cycle startup failure process. The article then refines the adiabatic mixing model with the predicted local fuel concentrations to provide a better estimation of the pressure rise due to deflagration. © 2017 American Institute of Chemical Engineers Process Saf Prog 36: 408–413, 2017
Analysis of oilseed rape stem weevil chemical control using a damage rating scale
Authors: Milovac Željko , Zorić Miroslav , Franeta Filip , Terzić Sreten , Petrović Obradović Olivera , Marjanović Jeromela Ana 
Published: March 2017

AbstractBACKGROUNDRape stem weevil (Ceutorhynchus napiGyll.) and cabbage stem weevil (C. pallidactylusMarsh.) can cause significant yield losses to oilseed rape (Brassica napusL.), and chemical control is often needed to protect crops from these pests. The efficacy of six insecticides, chlorpyriphos + cypermethrin, bifenthrin, alpha‐cypermethrin, pirimiphos‐methyl, thiacloprid and tau‐fluvalinate, was tested in a 4 year field trial. Besides the standard efficacy analysis expressed through the number of larvae per stem, a damage rating scale was introduced and modelled using a regression model for ordinal categorical data.RESULTSCompared with the control, expressed through damage rating and larval number, treatments with chlorpyriphos + cypermethrin and bifenthrin, showed higher efficacy in the control of stem weevils compared with alpha‐cypermethrin and pirimiphos‐methyl. The lowest efficacy was observed in treatments with tau‐fluvalinate and thiacloprid.CONCLUSIONThis study showed that a combined efficacy evaluation expressed through both damage rating scale and the count of larvae, supported by an ordinal regression model for data analysis, is indispensable for obtaining accurate results. © 2017 Society of Chemical Industry
Glyphosate resistance in Ambrosia trifida: Part 2. Rapid response physiology and non‐target‐site resistance
Authors: Moretti Marcelo L , Van Horn Christopher R , Robertson Renae , Segobye Kabelo , Weller Stephen C , Young Bryan G , Johnson William G , Douglas Sammons R , Wang Dafu , Ge Xia , d' Avignon André , Gaines Todd A , Westra Philip , Green Amanda C , Jeffery Taylor , Lespérance Mackenzie A , Tardif François J , Sikkema Peter H , Christopher Hall J , McLean Michael D , Lawton Mark B , Schulz Burkhard 
Published: March 2017

AbstractBACKGROUNDThe glyphosate‐resistant rapid response (GR RR) resistance mechanism in Ambrosia trifida is not due to target‐site resistance (TSR) mechanisms. This study explores the physiology of the rapid response and the possibility of reduced translocation and vacuolar sequestration as non‐target‐site resistance (NTSR) mechanisms.RESULTSGR RR leaf discs accumulated hydrogen peroxide within minutes of glyphosate exposure, but only in mature leaf tissue. The rapid response required energy either as light or exogenous sucrose. The combination of phenylalanine and tyrosine inhibited the rapid response in a dose‐dependent manner. Reduced glyphosate translocation was observed in GR RR, but only when associated with tissue death caused by the rapid response. Nuclear magnetic resonance studies indicated that glyphosate enters the cytoplasm and reaches chloroplasts, and it is not moved into the vacuole of GR RR, GR non‐rapid response or glyphosate‐susceptible A. trifida.CONCLUSIONThe GR RR mechanism of resistance is not associated with vacuole sequestration of glyphosate, and the observed reduced translocation is likely a consequence of rapid tissue death. Rapid cell death was inhibited by exogenous application of aromatic amino acids phenylalanine and tyrosine. The mechanism by which these amino acids inhibit rapid cell death in the GR RR phenotype remains unknown, and it could involve glyphosate phytotoxicity or other agents generating reactive oxygen species. Implications of these findings are discussed. The GR RR mechanism is distinct from the currently described glyphosate TSR or NTSR mechanisms in other species. © 2017 Society of Chemical Industry
Enhancing structural characterisation of glucuronidated O‐linked glycans using negative mode ion trap higher energy collision‐induced dissociation mass spectrometry
Authors: Ashwood Christopher , Abrahams Jodie L. , Nevalainen Helena , Packer Nicolle H. 
Published: March 2017

RationaleHigh protein production and secretion with eukaryotic glycosylation machinery make T. reesei RUT‐C30 a suitable expression host for recombinant proteins. The N‐glycosylation of secreted proteins of RUT‐C30 is known to vary depending on culture nutrients but O‐glycosylation has been less extensively studied.MethodsO‐Glycans and glycopeptides from secreted proteins were separated by porous graphitised carbon and C‐18 liquid chromatography, respectively. O‐Glycans were analysed in negative ion mode by electrospray ionisation linear ion trap mass spectrometry and glycopeptides in positive ion mode by electrospray ionisation hybrid quadrupole‐orbitrap mass spectrometry. Tandem mass spectrometry was used on O‐glycans and glycopeptides including ion trap higher energy collision‐induced dissociation (tHCD) to detect glycan fragments not detectable with standard ion trap fragmentation. tHCD allowed targeted MS3 experiments to be performed on structures containing hexuronic acid, which was not possible with ion trap CID, validating this novel O‐glycan composition. Positive mode C18‐LC/ESI‐MS/MS was used to identify and characterise glycopeptides found to be modified with this class of O‐glycans, identifying cellobiohydrolase I as a carrier of these novel O‐glycans.ResultsNegative mode ion trap higher energy collision‐induced dissociation allowed detection and targeted MS3 experiments to be performed on the hexuronic acid substituent of O‐glycan structures, which was not possible with ion trap CID, validating the novel O‐glycan composition to include hexuronic acid. Using glycopeptide analysis, this novel O‐glycan composition was found to be present on the catalytic domain of cellobiohydrolase I, the most abundant secreted protein by T. reesei.ConclusionsThese are the first reported O‐glycans to contain acidic sugars in fungi and they could have significant implications for cellobiohydrolase I structure and activity as well as the activity of recombinant proteins expressed in this host system. Copyright © 2017 John Wiley & Sons, Ltd.
Formation Control of Agricultural Mobile Robots: A Bidirectional Weighted Constraints Approach
Authors: Guillet Audrey , Lenain Roland , Thuilot Benoit , Rousseau Vincent 
Published: March 2017

AbstractThis paper focuses on the formation control of several mobile robots in off‐road conditions. A control strategy based on bidirectional referencing is proposed, where each robot combines a velocity control w.r.t. the immediate preceding neighbor with a control w.r.t. the immediate following neighbor. Two virtual leaders, respectively, at the head and at the tail of the fleet, are propelling the fleet at the desired velocity. The fleet stability is investigated using Lyapunov techniques, pending on combination coefficients. The stability is theoretically proven for constant coefficients as weights of the respective velocity controls and tested through simulations and full‐scale experiments. It is shown that this control strategy permits us to reduce the error propagation problem often encountered in formation control, while limiting the communication problems of the global strategies. As a result, a stable formation control architecture is defined, which requires each vehicle to be refereed only to two other robots. This limited communication need is particularly interesting for agricultural operations. The proposed approach is implemented in this paper on agricultural tractors.
The ISWI ATPase Smarca5 (Snf2h) Is Required for Proliferation and Differentiation of Hematopoietic Stem and Progenitor Cells
Authors: Kokavec Juraj , Zikmund Tomas , Savvulidi Filipp , Kulvait Vojtech , Edelmann Winfried , Skoultchi Arthur I. , Stopka Tomas 
Published: March 2017

Abstract
The imitation switch nuclear ATPase Smarca5 (Snf2h) is one of the most conserved chromatin remodeling factors. It exists in a variety of oligosubunit complexes that move DNA with respect to the histone octamer to generate regularly spaced nucleosomal arrays. Smarca5 interacts with different accessory proteins and represents a molecular motor for DNA replication, repair, and transcription. We deleted Smarca5 at the onset of definitive hematopoiesis (Vav1-iCre) and observed that animals die during late fetal development due to anemia. Hematopoietic stem and progenitor cells accumulated but their maturation toward erythroid and myeloid lineages was inhibited. Proerythroblasts were dysplastic while basophilic erythroblasts were blocked in G2/M and depleted. Smarca5 deficiency led to increased p53 levels, its activation at two residues, one associated with DNA damage (S15Ph°s) second with CBP/p300 (K376Ac), and finally activation of the p53 targets. We also deleted Smarca5 in committed erythroid cells (Epor-iCre) and observed that animals were anemic postnatally. Furthermore, 4-hydroxytamoxifen-mediated deletion of Smarca5 in the ex vivo cultures confirmed its requirement for erythroid cell proliferation. Thus, Smarca5 plays indispensable roles during early hematopoiesis and erythropoiesis.