bluuebunny/crossref_metadata_2025_split huggingface dataset:
Value co-creation behaviour – role of embeddedness and outcome considerations
Authors: Laud Gaurangi , Karpen Ingo Oswald 
Published: May 2017

Purpose
The purpose of this paper is to identify antecedents and consequences of customers’ value co-creation behaviour (VCB). VCB as a means to facilitate value realisation processes is gaining importance in service research and practice. Encouraging such enactments can be challenging, but can also offer competitive advantages.

Design/methodology/approach
We empirically investigate a conceptual model by converging three contemporary concepts of co-creation research – embeddedness, VCB and value-in-context – and examining the interdependencies between them. Data were collected in an online forum of a leading international weight-management firm.

Findings
Results suggest that customers’ embeddedness is a key antecedent of customers’ VCB in a service system. The three embeddedness dimensions – structural, relational and cultural – have a differential impact on customers’ VCB. Furthermore, findings illustrate that customers’ VCB has a significant impact on their object-oriented, self-oriented and brand-oriented social value-in-context outcomes.

Research limitations/implications
This study contributes by empirically investigating and validating antecedents and consequences of VCB in a service system. In doing so, the study highlights the significance of the nature of customer’s social constellations to develop contexts where value outcomes are actualised. Understanding the factors that shape VCB offers insights for firms to recognise how and where value propositions can be deployed that drives on-going co-creation processes.

Originality/value
This study is the first empirical research to offer insights into important pre-conditions and subsequent outcomes concurrently to illustrate how customers’ VCB can be managed and nurtured for sustainable value co-creation processes within service systems. This research further advances mid-range theorizing and microfoundational perspectives in marketing.
Engagement valence duality and spillover effects in online brand communities
Authors: Bowden Jana Lay-Hwa , Conduit Jodie , Hollebeek Linda D. , Luoma-aho Vilma , Solem Birgit Apenes 
Published: May 2017

Purpose
Online brand communities (OBCs) are an effective avenue for brands to engage consumers. While engaging with the brand, consumers simultaneously interact with other OBC members; thus engaging with multiple, interrelated engagement objects concurrently. The purpose of this paper is to explore both positively and negatively valenced consumer engagement with multiple engagement objects, the interplay between these, and the spillover effect from consumers’ engagement with the OBC to their engagement with the brand.

Design/methodology/approach
Drawing on 16 in-depth interviews with OBC members of a luxury accessory brand, a constant comparative method was adopted using axial and selective coding procedures. The objective was to understand the nature of participants’ engagement with the brand, the OBC, and the interplay between individuals’ engagement with these objects. The coding framework and resultant interpretive frameworks address engagement valence, outcomes, and direction.

Findings
This study illustrates consumer expressions of consumers’ positively and negatively valenced engagement with a focal brand, and with the OBC. Further, it demonstrates the interplay (spillover effect) that occurs between consumers’ engagement with the OBC, to their engagement with the brand. While the existence of positively valenced engagement with the OBC was found to further enhance consumer brand engagement (i.e. reflecting an engagement accumulation effect), negatively valenced engagement with the OBC was found to reduce consumer brand engagement (i.e. reflecting an engagement detraction effect).

Originality/value
While consumer engagement has been recognized to have both positive and negative manifestations, this study demonstrates that consumers’ engagement valence may differ across interrelated engagement objects (i.e. the brand and the OBC). Further, we demonstrate the existence of engagement spillover effects from the OBC to the brand for both positively and negatively valenced engagement.
Service-dominant orientation, dynamic capabilities and firm performance
Authors: Wilden Ralf , Gudergan Siegfried 
Published: May 2017

PurposeThe purpose of this paper is to investigate the effects of a firm’s service-dominant orientation on marketing and technological capabilities, and its performance. It outlines how a service-dominant orientation offers guidance for the development and deployment of ordinary capabilities, and indirectly affects performance. Additionally, it delineates how dynamic capabilities affect the impact of a service-dominant orientation on ordinary capabilities.Design/methodology/approachPartial least squares structural equation modeling drawing on data from 228 firms serves to assess hypotheses relating service-dominant orientation and dynamic capabilities with firm performance.FindingsThe results indicate that marketing and technological capabilities fully mediate the relationship between a firm’s service-dominant orientation and firm performance. Furthermore, the positive marginal effect of a firm’s service-dominant orientation on its marketing capabilities increases with the firm displaying a stronger service-dominant orientation. In addition, the positive effect of service-dominant orientation on marketing capabilities reduces the more the firm deploys dynamic capabilities.Research limitations/implicationsBecause of the cross-sectional sample, future studies could adopt longitudinal research designs to explore the impact of a service-dominant orientation on ordinary capabilities and performance, or investigate the applicability of the findings in other contexts.Practical implicationsThe findings imply that implementing a service-dominant orientation can be beneficial for firms. However, because the impact of such an orientation weakens the greater a firm’s dynamic capabilities, managers need to be mindful of this trade-off.Originality/valueThe study is the first to establish a link between the dynamic capability view, originating from strategy research, and service-dominant logic, stemming from marketing thinking.
Customer engagement in CSR: a utility theory model with moderating variables
Authors: Jarvis Wade , Ouschan Robyn , Burton Henry J. , Soutar Geoffrey , O’Brien Ingrid M. 
Published: May 2017

Purpose
Both customer engagement (CE) and corporate social responsibility (CSR) have been linked to customer loyalty. Past studies use service dominant logic and customer value co-creation to explain this relationship. The purpose of this paper is to apply utility theory to develop and test a new theoretical model based on CSR initiative preference to understand the relationship between CE and customer loyalty to the organisation in a CSR platform.

Design/methodology/approach
This empirical study uses choice theory in the form of best-worst scaling, and structural equation modelling, to measure the impact of sports club members’ choice preferences for a range of CSR initiatives on their intention to engage with the initiative and subsequent loyalty to the club.

Findings
This study highlights the importance of engaging members in the CSR strategy they prefer as it enhances not only the extra value to the organisation via customer loyalty to the organisation, but also CE with the organisation. Furthermore, the study reveals age and gender impact on the relationship between CE in CSR initiatives and customer loyalty.

Originality/value
This study extends CE to CSR behaviours and provides empirical evidence for a unique theoretical framework of CE based on utility theory. It also highlights the need to take into account moderating variables such as customer demographics.
Volatility Effects of Index Trading and Spillovers onUSAgricultural Futures Markets: A MultivariateGARCHApproach
Authors: Sanjuán‐López Ana I. , Dawson Philip J. 
Published: May 2017

AbstractWe examine the effects of speculation in the form of index trading on contemporaneous returns and volatility on corn, soybeans and wheat futures markets on the Chicago Board of Trade using multivariate generalised autoregressive conditional heteroscedasticity models and weekly data for 2006–2014. We also assess spillovers. Results are threefold. First, contemporaneous effects of index trading on own returns are positive and inelastic, and they are partially mitigated in the following week. Second, volatility depends positively on own past volatility, and volatility spillovers are limited. Third, index trading reduces own volatility.
Does drought stress modify the effects of plant‐growth promoting rhizobacteria on an aboveground chewing herbivore?
Authors: de Bobadilla Maite Fernández , Friman Julia , Pangesti Nurmi , Dicke Marcel , van Loon Joop J.A. , Pineda Ana 
Published: May 2017

AbstractSoil microbes have important effects on the interactions of plants with their environment, by promoting plant growth, inducing resistance to pests or by conferring tolerance to abiotic stress. However, their effects are variable and the factors responsible for this variation are mainly unknown. Our aim was to assess how drought stress modifies the effect of the nonpathogenic rhizobacterium Pseudomonas simiae WCS417r on plant growth and resistance against the generalist leaf‐chewing caterpillar Mamestra brassicae. We studied Arabidopsis thaliana Col‐0 plants, as well as mutants altered in the biosynthesis of the phytohormones jasmonic acid (JA) and abscisic acid (ABA). Caterpillars did not prefer rhizobacteria‐treated plants, independently of drought stress. Rhizobacteria colonization had a variable effect on caterpillar performance, which ranged from positive in one experiment to neutral in a second one. Drought had a consistent negative effect on herbivore performance; however, it did not modify the effect of rhizobacteria on herbivore performance. The effect of drought on herbivore performance was JA‐mediated (confirmed with the use of the dde2‐2 mutant), but it was still present in the ABA‐deficient mutant aba2‐1. Plant biomass was reduced by both drought and herbivory but it was enhanced by rhizobacterial colonization. Pseudomonas simiae WCS417r is able to promote plant growth even when plants are suffering herbivory. Nevertheless, the microbial effect on the herbivore is variable, independently of drought stress. To get the best possible outcome from the rhizobacteria‐plant mutualism it is important to understand which other factors may be responsible for its context‐dependency.
Defining the Diurnal Pattern of Snowmelt Using a Beta Distribution Function
Authors: Webb Ryan W. , Fassnacht Steven R. , Gooseff  Michael N. 
Published: May 2017

AbstractSnow is an important component of the hydrologic cycle for many regions worldwide. In addition to vital water resources, snowmelt can be important for forest ecosystem dynamics and flood risk. However, standard design events in the United States lack a design snowmelt event, including only precipitation events, though snowmelt has been shown to be larger than rainfall. In this article, we present a method using hourly snow water equivalent data to develop and test a function for representing the diurnal pattern of snowmelt. A two‐parameter beta distribution function is modified for the purposes of this study and found to fit the pattern of snowmelt well with a root mean squared error of 0.008. Soil moisture sensors were additionally utilized to assess the timing of the snowmelt water outflow from the base of the snowpack that supports the shape of the function, but suggests that the timing of losses recorded on snow pillows lag as much as 3 h. Further testing of the function showed the shape of the function to be accurate. The methods developed and tested in this paper can be applied for design purposes comparing snowmelt and rainfall events or to improve hydrological models investigating processes such as streamflow or groundwater recharge.
Identification and validation of single nucleotide polymorphisms as tools to detect hybridization and population structure in freshwater stingrays
Authors: Cruz Vanessa P. , Vera Manuel , Pardo Belén G. , Taggart John , Martinez Paulino , Oliveira Claudio , Foresti Fausto 
Published: May 2017

AbstractSingle nucleotide polymorphism (SNP) markers were identified and validated for two stingrays species, Potamotrygon motoro and Potamotrygon falkneri, using double digest restriction‐site associated DNA (ddRAD) reads using 454‐Roche technology. A total of 226 774 reads (65.5 Mb) were obtained (mean read length 289 ± 183 bp) detecting a total of 5399 contigs (mean contig length: 396 ± 91 bp). Mining this data set, a panel of 143 in silico SNPs was selected. Eighty‐two of these SNPs were successfully validated and 61 were polymorphic: 14 in P. falkneri, 21 in P. motoro, 3 in both species and 26 fixed for alternative variants in both species, thus being useful for population analyses and hybrid detection.
The space where aging acts: focus on the GABAergic synapse
Authors: Rozycka Aleksandra , Liguz‐Lecznar Monika 
Published: May 2017

SummaryAs it was established that aging is not associated with massive neuronal loss, as was believed in the mid‐20th Century, scientific interest has addressed the influence of aging on particular neuronal subpopulations and their synaptic contacts, which constitute the substrate for neural plasticity. Inhibitory neurons represent the most complex and diverse group of neurons, showing distinct molecular and physiological characteristics and possessing a compelling ability to control the physiology of neural circuits. This review focuses on the aging of GABAergic neurons and synapses. Understanding how aging affects synapses of particular neuronal subpopulations may help explain the heterogeneity of aging‐related effects. We reviewed the literature concerning the effects of aging on the numbers of GABAergic neurons and synapses as well as aging‐related alterations in their presynaptic and postsynaptic components. Finally, we discussed the influence of those changes on the plasticity of the GABAergic system, highlighting our results concerning aging in mouse somatosensory cortex and linking them to plasticity impairments and brain disorders. We posit that aging‐induced impairments of the GABAergic system lead to an inhibitory/excitatory imbalance, thereby decreasing neuron's ability to respond with plastic changes to environmental and cellular challenges, leaving the brain more vulnerable to cognitive decline and damage by synaptopathic diseases.
Vine copulas: modelling systemic risk and enhancing higher‐moment portfolio optimisation
Authors: Low Rand Kwong Yew 
Published: May 2017

AbstractAsymmetric dependence in equities markets has been shown to have detrimental effects on portfolio diversification as assets within the portfolio exhibit greater correlations during market downturns compared to market upturns. By applying the Clayton canonical vine copula (CVC) to model asymmetric dependence, we produce a measure of systemic risk across a portfolio of assets. In addition, we use the Clayton CVC to produce estimates of expected returns in an application to higher‐moment portfolio optimisation and find evidence of an improvement in performance across a range of risk‐adjusted return measures and the indices of acceptability.
PPAR‐gamma agonist pioglitazone modifies craving intensity and brain white matter integrity in patients with primary cocaine use disorder: a double‐blind randomized controlled pilot trial
Authors: Schmitz Joy M. , Green Charles E. , Hasan Khader M. , Vincent Jessica , Suchting Robert , Weaver Michael F. , Moeller F. Gerard , Narayana Ponnada A. , Cunningham Kathryn A. , Dineley Kelly T. , Lane Scott D. 
Published: May 2017

AbstractBackground and aimsPioglitazone (PIO), a potent agonist of PPAR‐gamma, is a promising candidate treatment for cocaine use disorder (CUD). We tested the effects of PIO on targeted mechanisms relevant to CUD: cocaine craving and brain white matter (WM) integrity. Feasibility, medication compliance and tolerability were evaluated.DesignTwo‐arm double‐blind randomized controlled proof‐of‐concept pilot trial of PIO or placebo (PLC).SettingSingle‐site out‐patient treatment research clinic in Houston, TX, USA.ParticipantsThirty treatment‐seeking adults, 18 to 60 years old, with CUD. Eighteen participants (8 = PIO; 10 = PLC) completed diffusion tensor imaging (DTI) of WM integrity at pre‐/post‐treatment.InterventionStudy medication was dispensed at thrice weekly visits along with once‐weekly cognitive behavioral therapy for 12 weeks.MeasurementsMeasures of target engagement mechanisms of interest included cocaine craving assessed by the Brief Substance Craving Scale (BSCS), the Obsessive Compulsive Drug Use Scale (OCDUS), a visual analog scale (VAS) and change in WM integrity. Feasibility measures included number completing treatment, medication compliance (riboflavin detection) and tolerability (side effects, serious adverse events).FindingsTarget engagement change in mechanisms of interest, defined as a ≥ 0.75 Bayesian posterior probability of an interaction existing favoring PIO over PLC, was demonstrated on measures of craving (BSCS, VAS) and WM integrity indexed by fractional anisotropy (FA) values. Outcomes indicated greater decrease in craving and greater increase in FA values in the PIO group. Feasibility was demonstrated by high completion rates among those starting treatment (21/26 = 80%) and medication compliance (≥ 80%). There were no reported serious adverse events for PIO.ConclusionsCompared with placebo, patients receiving pioglitazone show a higher likelihood of reduced cocaine craving and improved brain white matter integrity as a function of time in treatment. Pioglitazone shows good feasibility as a treatment for cocaine use disorder.
Postoperative interventions to reduce inflammatory complications after third molar surgery: review of the current evidence
Authors: Cho H , Lynham AJ , Hsu E 
Published: May 2017

AbstractInflammatory complications such as pain, swelling, trismus, infection and alveolar osteitis have an adverse affect on the quality of life of patients after third molar removal. This review presents the current evidence on postoperative strategies to reduce these complications. A literature search was performed to identify articles published in English between 2000 to 2016 using the following keywords: third molar(s), wisdom tooth/teeth, pain, swelling, trismus, infection, alveolar osteitis and dry socket. In total, 221 papers were reviewed. Methods published included analgesics, antibiotics, corticosteroids, mouthwashes, topical gels, cryotherapy and ozone therapy. This review highlights the variability in evidence available and summarizes the findings from best‐quality evidence. In conclusion, paracetamol and ibuprofen are efficacious in managing postoperative pain. Corticosteroids and antibiotics should only be used in selected cases. Chlorhexidine reduces alveolar osteitis. The benefits of cryotherapy, postoperative irrigation and ozone gel are yet to be established.
Increased delta neutrophil index in women with severe preeclampsia
Authors: Cho Hee Young , Jung Inkyung , Kim So Jung , Park Yong Won , Kim Young Han , Kwon Ja‐Young 
Published: May 2017

ProblemThe pathophysiology of preeclampsia (PE) is believed to be associated with a systemic inflammatory response, but few inflammatory markers are currently available to predict PE. Therefore, the aim of this study was to compare the serum delta neutrophil index (DNI) between normal and preeclamptic women.MethodsSixty‐five patients with mild preeclampsia (mPE), 147 patients with severe preeclampsia (sPE), and 163 women with normal pregnancy were included in this study. Maternal laboratory values including DNI were compared among the three groups.ResultsThe mean DNI was significantly higher in the sPE group, but there was no significant difference between the normal pregnancy group and mPE. The DNI also showed positive correlation with systolic and diastolic blood pressures, mean arterial pressure, proteinuria during 24 hours, proteinuria in dipstick, and ominous symptoms.ConclusionThe serum DNI value was increased in women with severe preeclampsia compared to that in those with normal pregnancy or mild preeclampsia. Further studies are needed to evaluate application of the DNI value as a prognostic marker of preeclampsia.
Beat‐to‐beat ECG restitution: A review and proposal for a new biomarker to assess cardiac stress and ventricular tachyarrhythmia vulnerability
Authors: Fossa Anthony A. 
Published: May 2017

BackgroundCardiac restitution is the ability of the heart to recover from one beat to the next. Ventricular arrhythmia vulnerability can occur when the heart does not properly adjust to sudden changes in rate or in hemodynamics leading to excessive temporal and/or spatial heterogeneity in conduction or repolarization. Restitution has historically been used to study, by invasive means, the dynamics of the relationship between action potential duration (APD) and diastolic interval (DI) in sedated subjects using various pacing protocols. Even though the analogous measures of APD and DI can be obtained using the surface ECG to acquire the respective QT and TQ intervals for ECG restitution, this methodology has not been widely adopted for a number of reasons.MethodsRecent development of more advanced software algorithms enables ECG intervals to be measured accurately, on a continuous beat‐to‐beat basis, in an automated manner, and under highly dynamic conditions (i.e., ambulatory or exercise) providing information beyond that available in the typical resting state.ResultsCurrent breakthroughs in ECG technology will allow ECG restitution measures to become a practical approach for providing quantitative measures of the risks for ventricular arrhythmias as well as cardiac stress in general.ConclusionsIn addition to a review of the underlying principles and caveats of ECG restitution, a new approach toward an advancement of more integrated restitution biomarkers is proposed.
Conglomerate Unions and Transformations of Union Democracy
Authors: Thomas Adrien 
Published: May 2017

AbstractConfronted with membership losses and declining bargaining power, trade unions have engaged in both political and organizational responses. A frequent type of organizational response has involved the creation of conglomerate unions, which bring together workers from various sectors and occupations. Pointing out a number of parallels between organizational developments in trade unions and political parties, this article analyses the emergence of conglomerate unions as a cause and consequence of changing conceptions of union democracy. Drawing on two in‐depth case studies conducted in France and Germany, the article examines how trade unions perceive their situation and how they define a reform rationale based on increasing their organizational ‘efficiency’ and ‘effectiveness’. In accordance with this rationale, unions engage in mergers and create larger conglomerates, thereby centralizing decision‐making bodies and professionalizing their staff. The reform of trade unions’ internal organization, in turn, affects unions’ capacity for interest aggregation and representation.