bluuebunny/crossref_metadata_2025_split huggingface dataset:
A salvaging strategy enables stable metabolite provisioning among free-living bacteria
Authors: Gude Sebastian , Pherribo Gordon J. , Taga Michiko E. 
Published: December 2021

SummaryAll organisms rely on complex metabolites such as amino acids, nucleotides, and cofactors for essential metabolic processes. Some microbes synthesize these fundamental ingredients of life de novo, while others rely on uptake to fulfill their metabolic needs. Although certain metabolic processes are inherently ‘leaky’, the mechanisms enabling stable metabolite provisioning among microbes in the absence of a host remain largely unclear. In particular, how can metabolite provisioning among free-living bacteria be maintained under the evolutionary pressure to economize resources? Salvaging, the process of ‘recycling and reusing’, can be a metabolically efficient route to obtain access to required resources. Here, we show experimentally how precursor salvaging in engineered Escherichia coli populations can lead to stable, long-term metabolite provisioning. We find that salvaged cobamides (vitamin B12 and related enzyme cofactors) are readily made available to non-productive population members, yet salvagers are strongly protected from overexploitation due to partial metabolite privatization. We also describe a previously unnoted benefit of precursor salvaging, namely the removal of the non-functional, proliferation-inhibiting precursor. As long as compatible precursors are present, any microbe possessing the terminal steps of a biosynthetic process can, in principle, forgo de novo biosynthesis in favor of salvaging. Consequently, precursor salvaging likely represents a potent, yet overlooked, alternative to de novo biosynthesis for the acquisition and provisioning of metabolites in free-living bacterial populations.
Islet primary cilia motility controls insulin secretion
Authors: Cho Jung Hoon , Li Zipeng A. , Zhu Lifei , Muegge Brian D. , Roseman Henry F. , Utterback Toby , Woodhams Louis G. , Bayly Philip V. , Hughes Jing W. 
Published: December 2021

ABSTRACTPrimary cilia are specialized cell-surface organelles that mediate sensory perception and, in contrast to motile cilia and flagella, are thought to lack motility function. Here we show that primary cilia in pancreatic beta cells exhibit movement that is required for glucose-dependent insulin secretion. Beta cell cilia contain motor proteins conserved from those found in classic motile cilia, and their 3D motion is dynein-driven and dependent on ATP and glucose metabolism. Inhibition of cilia motion blocks beta cell calcium influx and insulin secretion. Beta cells from humans with type 2 diabetes have altered expression of cilia motility genes. Our findings redefine primary cilia as dynamic structures possessing both sensory and motile function and establish that pancreatic beta cell cilia movement plays a critical role in controlling insulin secretion.
Linnemannia elongata (Mortierellaceae) stimulates Arabidopsis thaliana aerial growth and responses to auxin, ethylene, and reactive oxygen species
Authors: Vandepol Natalie , Liber Julian , Yocca Alan , Matlock Jason , Edger Patrick , Bonito Gregory 
Published: December 2021

AbstractHarnessing the plant microbiome has the potential to improve agricultural yields and protect plants against pathogens and/or abiotic stresses, while also relieving economic and environmental costs of crop production. While previous studies have gained valuable insights into the underlying genetics facilitating plant-fungal interactions, these have largely been skewed towards certain fungal clades (e.g. arbuscular mycorrhizal fungi). Several different phyla of fungi have been shown to positively impact plant growth rates, including Mortierellaceae fungi. However, the extent of the plant growth promotion (PGP) phenotype(s), their underlying mechanism(s), and the impact of bacterial endosymbionts on fungal-plant interactions remain poorly understood for Mortierellaceae. In this study, we focused on the symbiosis between soil fungus Linnemannia elongata (Mortierellaceae) and Arabidopsis thaliana (Brassicaceae), as both organisms have high-quality reference genomes and transcriptomes available, and their lifestyles and growth requirements are conducive to research conditions. Further, L. elongata can host bacterial endosymbionts related to Mollicutes and Burkholderia. The role of these endobacteria on facilitating fungal-plant associations, including potentially further promoting plant growth, remains completely unexplored. We measured Arabidopsis aerial growth at early and late life stages, seed production, and used mRNA sequencing to characterize differentially expressed plant genes in response to fungal inoculation with and without bacterial endosymbionts. We found that L. elongata improved aerial plant growth, seed mass and altered the plant transcriptome, including the upregulation of genes involved in plant hormones and “response to oxidative stress”, “defense response to bacterium”, and “defense response to fungus”. Furthermore, the expression of genes in certain phytohormone biosynthetic pathways were found to be modified in plants treated with L. elongata. Notably, the presence of Mollicutes- or Burkholderia-related endosymbionts in Linnemannia did not impact the expression of genes in Arabidopsis or overall growth rates.
Consumer preferences for grocery purchasing during the COVID-19 pandemic: a quantile regression approach
Authors: Segovia Michelle , Grashuis Jasper , Skevas Theodoros 
Published: December 2021

PurposeThe objective is to determine if consumer preferences for grocery purchasing are impacted by the severity of the COVID-19 pandemic and whether these preferences differ by demographic and psychographic characteristics.Design/methodology/approachThe authors conduct an online discrete choice experiment (DCE) with 900 U.S. consumers to assess grocery shopping preferences under various scenarios of the COVID-19 pandemic (i.e. decreasing, constant and increasing cases). The attribute of interest is the purchasing method (i.e. in-store purchase, in-store pickup, curbside pickup and home delivery) with minimum order requirements, time windows and fees as secondary attributes. Heterogeneity in individual-level willingness-to-pay (WTP) estimates for the main attribute is analyzed by means of mixed logit and quantile regression techniques.FindingsThe mixed logit model reveals heterogeneity in WTP estimates for grocery purchasing methods across participants. According to estimates from quantile regressions, the heterogeneity is partly explained by the severity of the COVID-19 pandemic. For example, the home delivery purchasing method is less preferred when the number of cases is decreasing. The results also show that consumer preferences for grocery shopping methods are affected more by psychographic characteristics than demographic characteristics. Consumers who comply with COVID-19 directives (e.g. wear face coverings) have stronger preferences for curbside pickup and home delivery, particularly at the tails of the WTP distributions.Originality/valueAlthough there is much data on food consumer behavior during the COVID-19 pandemic at the aggregate level, there are few analyses of grocery shopping preferences at the individual level. The study represents a first attempt to relate individuals' demographic and psychographic characteristics to their grocery shopping preferences during the COVID-19 pandemic, thus yielding numerous recommendations in terms of consumer segmentation.
Tax compliance, public spending and happiness in Europe
Authors: Delgado-Rodríguez María Jesús , De Lucas-Santos Sonia 
Published: December 2021

Purpose
This study aims to analyze whether tax compliance is the basis for the short-run dynamics of the development of welfare and happiness. The strengthening of tax compliance of corporates and citizens is not only important to achieve the goals assumed by fiscal policy but also is part of the values that can generate a higher level of welfare and happiness in Europe.

Design/methodology/approach
This study uses a dynamic factor model to offer new indexes that allow to monitor tax compliance, public spending and happiness trajectories and to evaluate their short-run relationships. Next, an analysis of the cyclical characteristics in terms of duration, amplitude and intensity is provided using the Harding and Pagan method (2002).

Findings
The empirical findings show that the European countries were able to reinforce tax compliance during the expansionary periods of the economy, and this has made it possible to increase public spending, and indirectly, happiness. Otherwise, this paper shows that the contractions of public resources during the global crisis, such as the case in the COVID-19, reduced the possibilities of well-being in Europe and made it more difficult to increase public spending and happiness.

Research limitations/implications
This study tries to analyze the transmission channels and relationships of three very complex variables: tax compliance, public spending and happiness. Incorporating these three variables into this research, with a short-run perspective, the authors have opened a new line of research that enriched the previous analysis. Therefore, the authors’ results should be considered the first step, that this study is going to continue to unravel the complexity of these relationships.

Practical implications
The design of policies aimed at improving individual, corporate and the well-being of nations needs them to incorporate elements of tax compliance as an objective that has economic and social implications. Individuals and corporates contribute to a fairer and more equitable society through compliance with tax obligations.

Originality/value
To the best of the authors’ knowledge, this is the first paper that offers evidence on the short-run dynamics of tax revenue, public spending and happiness for a better understanding of their relationships and behavior during the different periods of the economy.
Investigation to determine elements influencing customer's satisfaction in the B2C electronic retailing marketplaces
Authors: Ehsani Fatemeh , Hosseini Monireh 
Published: December 2021

PurposeTaking the perfect perspective of customers' satisfaction, this paper aims to investigate the elements affecting customer satisfaction in business-to-consumer (B2C) online retailing stores, which are divided into five non-monetary dimensions: trust, order fulfillment, website construction, excitement and interaction.Design/methodology/approachDue to distinguishing the suitability of the data, the authors used exploratory factor analysis (EFA). Next, the authors utilized confirmatory factor analysis (CFA) to check their validity. Then, the authors applied Cronbach's alpha to check the reliability of the elements. After that, the authors combined these five elements with structural equation modeling (SEM) to make a model. The authors also performed Friedman tests to prioritize the elements.FindingsThe results indicate that each element is undeniably significant and has an extraordinary impact on customers' satisfaction evaluation. Therefore, system providers and electronic retailers need to consider them on their websites to achieve marketing goals in the competitive online environments.Originality/valueElectronic commerce has resulted in an essential change in B2C marketing, especially in the electronic retailing industry. Online suppliers need to satisfy their customers to receive competitive advantages and increase their income. The purpose of this study is to research the elements affecting customers' satisfaction in B2C online retailing stores.
Relationship between employee well-being and organizational health: symbiotic or independent?
Authors: Singh Anupama , Jha Sumi 
Published: December 2021

PurposeThe purpose of this study is to understand the bi-directional causal relationship (regular and reverse causation) between employee well-being and organizational health, which is grounded in the micro-foundations of institutional theory.Design/methodology/approachIn this study, employee well-being has two facets: work engagement and burnout. The positive aspect of employee well-being has been conceptualized by work engagement, whereas the negative aspect has been conceptualized with the help of burnout. As concurrent triangulation method was adopted, the qualitative data, as well as quantitative data, was collected from various laboratories of Council of Scientific and Industrial Research – an Indian research and development organization.FindingsThe findings did not show the existence of a symbiotic relationship between employee well-being and organizational health. The findings indicated the existence of a significant positive relationship between organizational health and employee well-being, but the reverse effect was found to be non-significant. This shows that when organizational health is good, employees’ health will also be good but not vice versa.Originality/valueThis study shows that health is not a static state, and so, at any given point in time, employee well-being cannot have a positive relationship with organizational health. Employee engagement helps enhance organizational health, whereas burnout can hinder organizational health if not properly mitigated.
Value relevance and market valuation of assets measured using IFRS and US GAAP in the US equity market
Authors: Cipriano Michael , Cole Elizabeth T. , Briggs John 
Published: December 2021

Purpose
Studies show firms reporting using Generally Accepted Accounting Principles in the United States (US GAAP) and International Financial Reporting Standards (IFRS) are similarly valued in the market, however, these studies are limited due to the noise present in international studies from regulatory differences. This study aims to eliminate much of this noise by using a cleaner sample of all listings with the Securities Exchange Commission (SEC). This paper also looks at more detailed book value figures.

Design/methodology/approach
There have been previous studies on the differences in market valuation of firms reporting using IFRS vs US GAAP. Most of this research is confounded with difficulties due to different regulatory environments and volatile time periods. The study uses cleaner data following the SEC’s acceptance of IFRS financials without a 20-F Reconciliation. The authors use a large sample of non-US firms trading on US exchanges choosing to use either US GAAP or IFRS for SEC reporting purposes. The sample period starts two years after the SEC’s acceptance of IFRS financials without a 20-F reconciliation and is larger than earlier samples.

Findings
The authors show that there is no difference between IFRS and US GAAP firms’ overall value relevance, however, earnings are more value relevant when measured using IFRS and book value is more value relevant when measured using US GAAP. The authors find that the difference between US GAAP and IFRS can be explained, at least in part, by greater market multiples being placed on inventories and goodwill using US GAAP. This is offset in part by greater multiples being placed on other assets under IFRS.

Originality/value
The authors replicate earlier studies but also extend with a better sample and more detailed finings.
Using humanness and design aesthetics to choose the “best” type of trust: a study of mobile banking in France
Authors: Abdulrahman Al Moosa Heyam , Mousa Mohamed , Chaouali Walid , Mjahed Hammami Samiha , McKnight Harrison , Danks Nicholas Patrick 
Published: December 2021

PurposeThe research aims to addresses the limitations of previous literature regarding choosing the appropriate conceptualization of trust (i.e. interpersonal trust or system trust) and the role of design aesthetics in generating system trust and intention to adopt mobile banking.Design/methodology/approachThe research conducts two studies. Study 1 determines the degree of humanness in a mobile banking application. Study 2 tests the research model. A total of 261 respondents participate in Study 1 and 491 in Study 2. Statistical Package for the Social Sciences (SPSS) (study 1) and SmartPLS (PLS software) (study 2) are used to test the hypotheses.FindingsStudy 1 establishes that the mobile banking application is perceived to have low humanness. Thus, it is expected that system trust is more appropriate to use than interpersonal trust. Study 2 demonstrates that (i) system trust is more useful than interpersonal trust in the mobile banking context and (ii) design aesthetics positively influences consumer system trust and intention to adopt.Originality/valueTo the best of the authors' knowledge, the current research is the first to distinguish empirically between system trust and interpersonal trust and identify the best choice of mobile banking trust type. Specifically, the study determined the choice of system trust for mobile banking through a priori humanness measures and validated this choice by measuring both system trust and interpersonal trust, which has not been done before. In addition, retail banking should consider the influence of design aesthetics on consumer trust and incorporate elements that enhance consumers' opinions about the mobile banking application's functionality, reliability and helpfulness.
Production and maintenance in industries: impact of industry 4.0
Authors: Fasuludeen Kunju Firoz khan , Naveed Nida , Anwar Muhammad Naveed , Ul Haq Mir Irfan 
Published: December 2021

Purpose
Production industries are undergoing a digital transition, referred to as the fourth industrial revolution or Industry 4.0, as a result of rapidly expanding advances in information and communication technology. The purpose of this research is to provide a conceptual insight into the impact of unique capabilities from the fourth industrial revolution on production and maintenance tasks in terms of providing the existing production companies a boost by making recommendations on areas and tasks of great potential.

Design/methodology/approach
A survey and a literature review are among the research methods used in the research. The survey collected empirical data using a semi-structured questionnaire, which provided a broad overview of the company's present condition in terms of production and maintenance, resulting in more comprehensive and specific information regarding the study topics.

Findings
The study points out that, the implementation of I4.0-technology leads to an increase in production, asset utilization, quality, reduced machine down time in industries, and maintenance. Sensor technology, big data analysis, cloud technologies, mobile end devices, and real-time location systems are now being implemented to improve production processes and boost organizational competitiveness. Moreover, the study highlights that data acquired throughout the production process is utilized for quality control, predictive maintenance, and automatic production control. Furthermore, I4.0 solutions help companies to be more efficient with assets at each stage of the process, allowing them to have a stronger control on inventories and operational-optimization potential.

Originality/value
The findings of the study was supported by empirical data collected through survey that provides an intangible understanding of the importance of distinctive capabilities from the I4.0 revolution on production and maintenance tasks. In this study, some recommendations and guidelines to enhance these tasks are provided that are vital for existing production companies.
Is stock market in Sub-Saharan Africa resilient to health shocks?
Authors: Kumeka Terver , Ajayi Patricia , Adeniyi Oluwatosin 
Published: December 2021

Purpose
This paper aims to examine the impact of health and other exogenous shocks on stock markets in Africa. Particularly, the authors examined the resilience of the major stock markets in 12 African economies during the recent global pandemic.

Design/methodology/approach
This paper uses the recent panel vector autoregressive model, which enables us to capture the response of stock markets to shocks in COVID-19, commodity markets and exchange rate. For robustness, the authors also analysed the panel Granger causality test. Data was obtained for the period ranging from 2 January 2020 to 31 December 2020.

Findings
The results show that the growth in COVID-19 cases and deaths do not have any substantial impact on the stock market returns of these economies. In terms of commodity markets, the authors find that gold price has a negative contemporaneous effect on stock returns, but the effect fizzles out around the fifth day while crude oil price, on the other hand, has a significant positive simult aneous impact on stock returns and also converges around the fifth day. The authors further find that the exchange rate has a contemporaneous and nonlinear effect on stock returns and seems to be more dramatic when compared with the other variables. Overall, the results show that stock markets in Africa appear to be flexible and resilient against the COVID-19 outbreak but are affected by other exogenous shocks such as volatile commodity prices and the foreign exchange market. The effect is, however, short-lived – between one to five days.

Practical implications
Following the study’s findings, policies should be put in place to support financial markets by way of hedging against commodity instability and securing domestic currency financing. Policymakers are also recommended to concentrate on managing the uncertainties around their exchange rate markets and develop robust and efficient domestic financial markets to encourage local and foreign investors.

Originality/value
Several studies have been carried out on the effects of disasters (such as the COVID-19 pandemic) on stock markets, but only a few studies have examined the resilience of stock markets to health and other exogenous shocks. This study’s attempt is not only to examine the impact of COVID-19 health shocks on stock markets but also to analyse the resilience of the sampled stock markets. The authors also analyse the resilience of stock markets to commodity markets and exchange rates shocks.
The pathway to violence and public mass shooters in mental health treatment before attacks
Authors: Cowan Rebecca G. , Cole Rebekah 
Published: December 2021

Purpose
The purpose of this study is to provide mental health practitioners with a framework for conceptualizing individuals who may be at risk of targeted violence, mass shootings in particular.

Design/methodology/approach
Through the lens of the Path to Intended Violence model, a non-experimental descriptive design was chosen to explore the characteristics and behaviors of perpetrators who had engaged in mental health treatment within six months before their attacks.

Findings
The perpetrators in this study demonstrated behaviors included in each of the stages of the Path to Intended Violence model. Thus, it may be important for practitioners to be familiar with this model, especially the earlier stages, to potentially identify and intervene with individuals who may be at risk of committing mass violence.

Originality/value
This paper highlights how the Path to Intended Violence model can provide practitioners with a framework for identifying progressive warning signs in patients and how to take action to stop them from continuing their journey toward violence.