bluuebunny/crossref_metadata_2025_split huggingface dataset:
Extrinsic motivations behind mobile shopping: what drives regular and occasional shoppers?
Authors: De Canio Francesca , Fuentes-Blasco Maria , Martinelli Elisa 
Published: May 2022

PurposeThis paper aims at shedding light on the competing extrinsic motivations behind the mobile shopping process of regular and occasional shoppers. Price and convenience, shopping security, order delivery and post-sale service are investigated as antecedents of the mobile shopping attitude-intention path.Design/methodology/approachThe empirical analysis is based on a multigroup structural equation model (SEM) developed on 903 online questionnaires collected among Chinese shoppers in a pre-Covid-19 pandemic retailing context.FindingsFindings evidence contrary motivations behind the attitude – intention to shop using a mobile retail app of regular and occasional shoppers. While all the investigated aspects result to be positively relevant for regular m-shoppers, shopping security and post-sale service do not impact the attitude – intention path of occasional mobile shoppers. Results support retailers’ strategies in the context of mobile shopping growth.Originality/valueThe paper contributes to the emerging retailing literature on mobile shopping by offering a comparison of the motivations behind the mobile shopping intention of regular and occasional shoppers. Extrinsic motivations before, during and after the transaction are jointly investigated in the study.
Reward or punish: investigating output controls and content generation in the multi-sided platform context
Authors: Lin Feiyan , Tian Hengqi , Zhao Jing , Chi Maomao 
Published: May 2022

PurposeE-commerce content platforms are a typical type of multi-sided platform that combines transactions with social media platforms. To solve the managerial dilemma of balancing the tension between control and autonomy of influencers' output performance, this study aims to investigate how exercising output controls through performance rewards and performance punishments impact the quantity and quality of influencers' content generation.Design/methodology/approachChoosing JD WeChat Shopping Circle as the research context and leveraging the introduction of a double commission subsidy policy and a removal policy as quasi-natural experiments, this study applied the difference-in-differences (DID) method to empirically test hypotheses.FindingsPerformance rewards incentivize influencers to generate high-quality content, but such incentivizing effects attenuate over time. Performance punishment drives influencers to generate expected pieces of high-quality content, and such safeguarding effects accentuate over time.Originality/valueThis study proposes output controls as an important form of governance mechanism in multi-sided platforms and substantiates how rewards and punishments as two facets of incentives affect complementors' behaviors. In addition, by distinguishing performance-contingent rewards from completion-contingent rewards, this study helps resolve the mixed findings on the effects of monetary rewards in the user-generated content (UGC) literature.
Governance quality and momentum returns: international evidence
Authors: Imran Zulfiqar Ali , Wong Woei Chyuan , Binti Ismail Rusmawati 
Published: May 2022

PurposeMomentum returns are considered an anomaly in the finance literature as their existence cannot be fully explained under the asset pricing paradigm. This study attempts to shed more light on this anomaly by investigating the determinants of momentum returns.Design/methodology/approachThe panel data technique is applied to the sample of 40 countries worldwide from 1996 to 2018. The authors use the panel-corrected standard error (PCSE) model to estimate the coefficient of World Governance Indicators (WGI), whereas the fixed effect model is used to determine the coefficient for corporate governance indicators (CGIs). The choice of PCSE estimation methods is guided by the fact that WGI variables are subjected to serial correlation, heteroskedasticity and cross-sectional dependence problems while CGI variables are not. Furthermore, a composite WGI index is constructed using principal component analysis (PCA).FindingsRegression analysis shows a negative and significant relationship between WGI index and momentum returns. The negative coefficient value of WGI supports the prediction of the overreaction hypothesis, which postulates a lower behavioral bias in the market with high governance quality. Breaking down of the WGI by their six indicators reveals that four of the indicators (control over corruption, government effectiveness, stability and avoidance of violence) are negative statistically significant with momentum returns while two indicators are not significant. As for CGIs, only one (strength of investor protection) of the four tested indicators is negative and significantly related to momentum returns.Originality/valueThe study fills the gap in economic literature by highlighting the association between governance quality at the country (WGI) and firm level (CGI) on stock momentum returns.
Two sides of the same coin: accessibility practices and neurodivergent users' experience of extended reality
Authors: Lukava Tamari , Morgado Ramirez Dafne Zuleima , Barbareschi Giulia 
Published: May 2022

PurposeThis paper explores the accessibility barriers faced by neurodivergent individuals regarding the use of Extended Reality (XR) technologies and the difficulties faced by developers in creating neurodivergent inclusive XR experiences.Design/methodology/approachThe authors carried out a survey with neurodivergent participants, and a series of semi-structured interviews with neurodivergent adults and XR developers.FindingsNeurodivergent individuals experience sensory overload when using XR technologies; these negative experiences are exacerbated by excessive multisensory stimulation. Allowing for the customization of sensory settings was seen as the only way to potentially limit negative experiences. The authors found that XR developers lacked awareness of accessibility requirements and struggled to integrate them in current software development practices.Social implicationsAccessibility understanding regarding neurodivergence is increasingly available and the time has come to bring computing and information services within the reach of all neurodivergent individuals. The power in the design of XR, which is crucial, is decentralized from neurotypical XR developing practices to avoid artificial barriers that decrease the quality of life.Originality/valueThere is a lack of studies exploring how neurodivergent individuals experience XR considering their different sensory processing patterns. There is also no research exploring XR developers' awareness of accessibility needs of neurodivergent individuals. This paper presents an account of the challenges faced by neurodivergent XR users, the difficulties faced by XR developers to integrate neurodivergent accessibility requirements, and proposes specific strategies to overcome challenges.
From ambiguity to action: integrating collective sensemaking and rational decision making in management pedagogy and practice
Authors: Awati Kailash , Nikolova Natalia 
Published: May 2022

PurposeManagers are increasingly presented with complex, ambiguous decision problems that affect multiple stakeholder groups. Such problems cannot be tackled solely by classical approaches that prescribe rational methods to weigh evidence and select an optimal course of action. Yet most courses on decision making still focus on these methods. This paper draws attention to the complementary nature of rational decision making and sensemaking techniques in management decision making, and describes a practical pedagogy that demonstrates how the two can be integrated into management curricula.Design/methodology/approachBased on an in-depth review of relevant research, the authors propose a conceptual model that highlights the complementary nature of rational and sensemaking methods for making decisions relating to complex and ambiguous problems. They then describe a course on decision making as an illustration of how the model can inform decision making pedagogy.FindingsDecision makers need to think of their decision problems in terms of two distinct types of uncertainty: those for which uncertainty can be quantified and those for which it cannot. When faced with the latter, decisions are best made by working with relevant stakeholders to collectively frame the problem using practical sensemaking tools prior to applying rational decision making techniques to address it. Decision making under ambiguity is an iterative, social process requiring a combination of rational decision making methods and sensemaking techniques.Practical implicationsThe paper seeks to increase awareness about the complementary nature of sensemaking and rational decision making. It emphasizes the need to integrate the two in management curricula and provides details on how this can be done via an example of a course implemented at an Australian Business School. The techniques described will also be of interest to practitioners.Originality/valueThe paper describes a practical pedagogy that blends rational decision making and collective sensemaking techniques in a way that fosters managers’ decision making skills in contexts characterized by ambiguity.
High toughness, thermal resistance and excellent dielectric properties phenolic epoxy vinyl ester resin modified by hyperbranched polyimide
Authors: Gao Feng , Zhang Xiaorui , Weng Ling , Cheng Yujun , Shi Jiahao 
Published: May 2022

Purpose
Phenolic epoxy vinyl ester resin (PEVER) is an advanced resin matrix, which has excellent heat resistance, electrical insulation. However, the brittleness and poor toughness of its curing product limited its application, so this paper aims to modify the PEVER with hyperbranched polyimide (HBPI), so as to enhance the toughness, heat resistance and dielectric properties of PEVER.

Design/methodology/approach
Hexamethylene diisocyanate trimer was used as the central reactant. Methyl tetrahydrophthalic anhydride was used as the branching unit, stannous octoate was used as the catalyst and hydroquinone was prepared as the inhibitor. Then, the hyperbranched structure of HBPI was characterized by Fourier transform infrared spectrometer and 13C-NMR. Next, PEVER was mixed with different contents of HBPI, and then the authors tested its curing product.

Findings
It is found that with the addition of HBPI, the free volume of the system was increased and the content of polar groups was decreased in each unit space, so the dielectric constant (ε) and the dielectric loss (tanδ) were decreased. In addition, PEVER could be well toughened by HBPI and the thermal stability of PEVER was improved.

Originality/value
HBPI has excellent heat resistance. The addition of hyperbranched polymer increases the free volume of the system so it can slow down the transfer of stress and its nearly circular structure can absorb the impact energy from all directions. Moreover, an appropriate amount of free volume can decrease the dielectric constant of PEVER by reducing the content of polar groups.
Heterocyclic aromatic amine contents and quality characteristics of bacon as influenced by NaCl concentration of brine
Authors: Du Hongzhen , Wang Qiang , Liu Qian , Chen Qian , Liu Haotian , Xu Ming , Kong Baohua 
Published: May 2022

AbstractBacon usually have a high salt content. Excessive intake of salt could cause a harm to human health. Heterocyclic aromatic amines (HAAs) are carcinogenic and mutagenic heterocyclic compounds formed by the reactions of precursor substances at high temperature. This study investigated the influence of different levels of NaCl on the HAA contents and quality characteristics of bacon. Moisture, aw, L* value, b* value, thiobarbituric acid‐reactive substance (TBARS), and carbonyl content increased significantly with a decrease in the NaCl concentration of the brine (p < 0.05). There were no significant differences between treatments for a* value, pH, creatine content, sensory redness, bitterness, or off‐odor (p > 0.05). Sensory evaluation showed that saltiness in bacon increased significantly with increased NaCl concentrations in brine. The increased NaCl concentrations decreased the total HAAs in fried bacon (p < 0.05). Moreover, the nonpolar HAA contents in bacon were higher than the polar HAA contents; salt concentration mainly affected the nonpolar HAA content. In summary, salt content had a significant influence on the HAA content and the quality characteristic of bacon.
Estimating occupancy from autonomous recording unit data in the presence of misclassifications and detection heterogeneity
Authors: Clement Matthew J. , Royle J. Andrew , Mixan Ronald J. 
Published: May 2022

Abstract

Autonomous recording units (ARUs) are now widely used to survey communities of species. These surveys generate spatially and temporally replicated counts of unmarked animals, but such data typically include false negatives and misclassified detections, both of which may vary across sites in proportion to abundance. These data challenges can bias estimates of occupancy, and the typical approach of verifying individual detections is expensive.

We developed a Bayesian implementation of a two‐species, false‐positive N‐mixture model for estimating occupancy from ARU data or other counts of unmarked animals that does not require manual verification. The model accounts for species misclassification and abundance‐induced detection heterogeneity, as well as false negatives. To evaluate this model, we simulated 200 datasets for each of 29 scenarios, including scenarios in which misclassifications outnumbered correct classifications for rare species. We also applied the model to acoustic surveys of bats conducted on Fort Carson Army Post and Piñon Canyon Maneuver Site, Colorado, USA.

In the simulation study, bias, coverage and root mean square error for occupancy estimates obtained from the two‐species false‐positive N‐mixture model were superior to metrics obtained from two competing two‐species false‐positive occupancy models. Across 29 scenarios, absolute bias was consistently low (range: −0.03 to 0.07), while coverage averaged 93% (range: 74%–98%). For alternative occupancy models, absolute bias was often high (range: −0.36 to 0.39), and coverage averaged from 47% to 65%. Although our model included an abundance parameter, abundance estimates were not reliable. For two species of Myotis bats, we estimated that 1%–5% of field‐recorded detections were misclassified. Estimated occupancy (0.91 and 0.76) was lower than naïve estimates (1.00 and 0.94). Competing occupancy models implausibly estimated local occupancy of 0.00 at sites with numerous detections.

Our two‐species, false‐positive N‐mixture model is significant because it accounts for detection heterogeneity and improves occupancy estimates without expensive manual verification of detections. Our field application indicated that misclassifications were not common, yet affected occupancy inferences. Given that ARUs are increasingly used to survey a broad range of taxa, such an occupancy model could be widely useful.
Evaluation of resistance to black bean aphid (Aphis fabae) in selected varieties and mutant genotypes of common bean (Phaseolus vulgaris)
Authors: Zimba Kennedy J. , Sohati Philemon H. , Munyinda Kalaluka , Kamfwa Kelvin , Roberts Joe M. , Pope Tom W. 
Published: May 2022

AbstractCommon bean (Phaseolus vulgaris) is an important food crop across sub‐Saharan Africa. In Zambia, actual common bean yields are typically lower than potential yields because of the impact of invertebrate pests and plant diseases. Black bean aphids (Aphis fabae) (Hemiptera: Aphididae) negatively impact bean productivity directly by ingesting plant assimilates and indirectly by vectoring diseases such as bean common mosaic virus. Current breeding programmes aim to develop bean cultivars with improved yield and tolerance to pests. The objective of this study was to screen five common bean varieties (Rozi Koko, Mwezi Moja, Majesty, KK25 and AO‐1012‐29‐3A) and four mutation‐derived genotypes (CA 3, CA 15, CA 24 and CA 38) for resistance to black bean aphid. Commercial bean cultivars such as Kabulangeti and Carioca (variety from which all mutants were derived) were used as controls for the selected varieties and mutant genotypes, respectively. Several parameters of aphid resistance traits were assessed. Deterrence to aphid was assessed by settling preference while physical barriers to aphid feeding were evaluated by nymph survival. Reduction in palatability of phloem sap was evaluated by nymph development and mean relative growth rate. Electrical penetration graph recordings of feeding behaviour were performed in order to localise aphid‐resistant factors. Nymph development was significantly longer on AO‐1012‐29‐3A compared to Kabulangeti despite the fact that there were significantly fewer glandular trichomes on this line. The variety AO‐1012‐29‐3A can be used in genetic improvement of common bean for aphid resistance.
Interventions to improve consultations in the emergency department: A systematic review
Authors: Voaklander Britt , Gaudet Lindsay A. , Kirkland Scott W. , Keto‐Lambert Diana , Villa‐Roel Cristina , Rowe Brian H. 
Published: May 2022

AbstractObjectivesEmergency department (ED) consultations with specialists are necessary for safe and effective patient care. Delays in the ED consultation process, however, have been shown to increase ED length of stay (LOS) and contribute to ED crowding. This review aims to describe and evaluate the effectiveness of interventions to improve the ED consultation process.MethodsEight primary literature databases and the gray literature were searched to identify comparative studies assessing ED‐based interventions to improve the specialist consultation process. Two independent reviewers identified eligible studies, assessed study quality, and extracted data. Individual or pooled meta‐analysis for continuous outcomes were calculated as mean differences (MDs) with 95% confidence intervals (CIs) using a random‐effects model was conducted.ResultsThirty‐five unique comparative intervention studies were included. While the interventions varied, four common components/themes were identified including interventions to improve consultant responsiveness (n = 11), improve access to consultants in the ED (n = 9), expedite ED consultations (n = 8), and bypass ED consultations (n = 7). Studies on interventions to improve consult responsiveness consistently reported a decrease in consult response times in the intervention group with percent changes between 10% and 71%. Studies implementing interventions to improve consult responsiveness (MD −2.55, 95% CI −4.88 to –0.22) and interventions to bypass ED consultations (MD −0.99, 95% CI −1.43 to –0.56) consistently reported a decrease in ED LOS; however, heterogeneity was high (I2 = 99%). Evidence on whether any of the interventions were effective at reducing the proportion of patients consulted or subsequently admitted varied.ConclusionsThe various interventions impacting the consultation process were predominately successful in reducing ED LOS, with evidence suggesting that interventions improving consult responsiveness and improving access to consultants in the ED also improve consult response times. Health care providers looking to implement interventions to improve the ED consultation process should identify key areas in their setting that could be targeted.
Top‐quality embryo transfer is associated with lower odds of ectopic pregnancy
Authors: Anzhel Simona , Mäkinen Sirpa , Tinkanen Helena , Mikkilä Tiina , Haltia Anni , Perheentupa Antti , Tomás Candido , Martikainen Hannu , Tiitinen Aila , Tapanainen Juha S. , Veleva Zdravka 
Published: May 2022

AbstractIntroductionThe incidence of ectopic pregnancy is up to four times higher after in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) than in spontaneous pregnancies, and the risk of ectopic pregnancy is increased by tubal factor infertility and the transfer of multiple embryos. However, the effect of embryo quality on the probability of ectopic pregnancy has not been investigated until now and it is not clear whether ovarian stimulation parameters affect the incidence of ectopic pregnancy.Material and MethodsAn historical cohort study of 15 006 clinical pregnancies (diagnosed by ultrasound at 6–8 gestational weeks) after non‐donor IVF/ICSI with fresh embryo transfer (n = 8952) or frozen–thawed embryo transfer (n = 6054). Treatments were performed during 2000–2017 in Finland. A total of 9207 (61.4%) single and 5799 (38.6%) double embryo transfers of no more than one top‐quality embryo were evaluated. We analyzed the effects of multiple factors on ectopic pregnancy by logistic regression, including type of cycle (fresh vs frozen embryo transfer), female age, number and quality of embryos transferred, tubal factor infertility and factors of ovarian response to gonadotropin stimulation.ResultsEctopic pregnancy was observed in 2.3% of cycles. There was no significant difference in ectopic pregnancy rate after fresh embryo transfer and frozen embryo transfer (2.2% vs 2.4%, p = 0.3). The ectopic pregnancy rate was lower in cycles with top‐quality embryo transfer (1.9%) than of those where only non‐top quality embryos were transferred (2.7%, p < 0.0001). Tubal factor infertility was diagnosed more often in ectopic pregnancy than in intrauterine pregnancies (21.2% vs 11.0%, p < 0.0001). Logistic regression revealed lower odds for ectopic pregnancy after a top‐quality embryo transfer than after transfer of a non‐top quality embryo (odds ratio [OR] 0.72, 95% confidence interval [CI] 0.56–0.92, p = 0.007). Transfer of two vs one embryo (OR 1.35, 95% CI 1.05–1.70, p = 0.02) and tubal factor infertility (OR 2.21, 95% CI 1.68–2.91, p < 0.0001) significantly increased the risk of ectopic pregnancy.ConclusionsTransfer of non‐top quality embryos is associated with a higher rate of ectopic pregnancy. This is particularly important to keep in mind in treatments with only non‐top embryos available even in the absence of tubal factor infertility. To minimize the risk of ectopic pregnancy, the number of embryos transferred should be as low as possible.
A novel nonlinear afterload for ex vivo heart evaluation: Porcine experimental results
Authors: Pigot Henry , Soltesz Kristian , Paskevicius Audrius , Liao Qiuming , Sjöberg Trygve , Steen Stig 
Published: May 2022

AbstractBackgroundExisting working heart models for ex vivo functional evaluation of donor hearts often use cardiac afterloads made up of discrete resistive and compliant elements. This approach limits the practicality of independently controlling systolic and diastolic aortic pressure to safely test the heart under multiple loading conditions. We present and investigate a novel afterload concept designed to enable such control.MethodsSix ∼70 kg pig hearts were evaluated in vivo, then ex vivo in left‐ventricular working mode using the presented afterload. Both in vivo and ex vivo, the hearts were evaluated at two exertion levels: at rest and following a 20 μg adrenaline bolus, while measuring aortic pressure and flow, left ventricular pressure and volume, and left atrial pressure.ResultsThe afterload gave aortic pressure waveforms that matched the general shape of the in vivo measurements. A wide range of physiological systolic pressures (93 to 160 mm Hg) and diastolic pressures (73 to 113 mm Hg) were generated by the afterload.ConclusionsWith the presented afterload concept, multiple physiological loading conditions could be tested ex vivo, and compared with the corresponding in vivo data. An additional control loop from the set pressure limits to the measured systolic and diastolic aortic pressure is proposed to address discrepancies observed between the set limits and the measured pressures.