bluuebunny/crossref_metadata_2025_split huggingface dataset:
Estimating the time since admixture from phased and unphased molecular data
Authors: Janzen Thijs , Pina Verónica Miró 
Published: September 2020

AbstractAfter admixture, recombination breaks down genomic blocks of contiguous ancestry. The breakdown of these blocks forms a new ‘molecular clock’, that ticks at a much faster rate than the mutation clock, enabling accurate dating of admixture events in the recent past. However, existing theory on the break down of these blocks, or the accumulation of delineations between blocks, so called ‘junctions’, has mostly been limited to using regularly spaced markers on phased data. Here, we present an extension to the theory of junctions using the Ancestral Recombination Graph that describes the expected number of junctions for any distribution of markers along the genome. Furthermore, we provide a new framework to infer the time since admixture using unphased data. We demonstrate both the phased and unphased methods on simulated data and show that our new extensions performs better than previous methods, especially for smaller population sizes and for more ancient admixture times. Lastly, we demonstrate the applicability of our method on an empirical dataset of labcrosses of yeast (Saccharomyces cerevisae) and on two case studies of hybridization in swordtail fish andPopulustrees.
Antioxidant, hypoglycemic and anti-hypertensive properties of extracts derived from peel, fruit and kernel of Salak
Authors: Tan Seok Shin , Tan Seok Tyug , Tan Chin Xuan 
Published: September 2020

PurposeSalak (Salacca zalacca) is an underutilised fruit. The bioactivities of this fruit have rarely been studied scientifically. Thus, the present study aimed to determine the antioxidant activity of extracts derived from the peel, fruit and kernel of the Salak fruit, as well as the hypoglycemic and anti-hypertensive properties of Salak peel extracts.Design/methodology/approachThe peel, fruit and kernel of the Salak were extracted using distilled water, methanol and ethanol. Antioxidant activities, angiotensin-converting enzyme (ACE) and alpha-amylase inhibition properties of the extracts were estimated via in vitro standard methods. Besides, the total phenolic content (TPC) and total flavonoid content (TFC) of the extracts were also determined in the present study. The antioxidant activities of different parts of Salak extracts were determined by ferric-reducing antioxidant power (FRAP) and Trolox equivalent antioxidant capacity (TEAC) methods. Percent of radical scavenging properties were calculated via DPPH assay. The hypoglycemic and anti-hypertensive properties of Salak peel were evaluated using alpha-amylase inhibition and ACE assays, respectively.FindingsFruit extracts of Salak in methanol were found to exhibit the highest TPC (10.27 ± 0.12 mg GAE/g), TFC (11.04 ± 0.89 mg CE/g) and antioxidant properties amongst all samples whereby the TPC and TFC were strongly correlated with antioxidant activities. On the other hand, distilled water extracted Salak kernel showed to have the lowest TPC (0.53 ± 0.05 mg GAE/g), TFC (0.37 ± 0.01 mg CE/g) and antioxidant properties amongst all the Salak extracts. Peel extracts exhibit comparable antioxidant activities with fruit extracts in the current findings. In addition, peel extracts indicated some extend of ACE and alpha-amylase inhibition activities regardless of the solvents used. Methanol and ethanol peel extracts indicated no significant difference (p < 0.05) ACE (98%) and alpha-amylase (90%) inhibition activities. However, distilled water extracted Salak peel showed significantly lower ACE and alpha-amylase inhibition in comparison to methanol and ethanol peel extracts.Originality/valueThe present findings suggested that the fruit of Salak exhibits the highest antioxidant properties, followed by the peel and lastly, the kernel, which shows the lowest antioxidant properties amongst all the samples. The results also indicated that the peel extracts have ACE and alpha-amylase inhibition activities.
Potential consequences of COVID-19 for sustainable meat consumption: the role of food safety concerns and responsibility attributions
Authors: Yang Xisi 
Published: September 2020

PurposeWhile coping with severe damages of the ongoing coronavirus outbreak worldwide, this study enlightens the potential effects of the pandemic on young adults' willingness to avoid game meat consumption as well as to purchase animal welfare products.Design/methodology/approachIn a structural equation model (N = 234), food safety concerns and perceived responsibility for a future change of individuals, marketers and the government as predictors are related to behavioral intentions. Further, two antecedents of food safety concern including risk perception and anxiety related to coronavirus disease 2019 (COVID-19) are tested.FindingsUsing a Chinese sample, results indicated that food safety concern – triggered by risk perception and anxiety – negatively affected willingness to buy animal welfare products. Perceived responsibility of marketers' change positively relates to people's willingness to avoid game meat and to buy animal welfare products, while the latter is also positively related to perceived governmental responsibility.Practical implicationsConsumers demand marketers to improve safety and hygiene standards as it is a necessary condition for adopting sustainable consumption behaviors. Animal welfare products have the potential to pronounce the demanded level of product safety, while the game meat market needs to be prepared for necessary adaptations for coping with the adverse effects of COVID-19.Originality/valueThis article adds knowledge to the behavioral consequences of a viral hazard in the context of sustainable food choices while relating those to attribution theories and food safety concerns.
Women directors’ effect on firm value and performance: the case of REITs
Authors: Noguera Magdy 
Published: September 2020

PurposeThe purpose of this paper is to assess the effect of women directors on US Real Estate Investment Trusts (REITs) value and performance.Design/methodology/approachArchival financial and board of director data for the 1999–2019 period are collected and analyzed using panel data regression analysis.FindingsThe main findings indicate that women directors’ presence renders a modest positive effect on REIT performance but only when they reach critical mass on REIT boards; and that women directors have no effect at all on REIT value. Additional findings indicate that women directors are more common on REIT boards after the enactment of the Sarbanes–Oxley Act but less common on boards in which the REIT founder is the chief executive officer.Originality/valueTo the best of the author’s knowledge, this is the first research on the effect of a gender diverse board on REIT value. It is also the first paper documenting a positive relationship between board gender diversity and REIT performance. This paper fills a research gap, as it is one of the few papers focused on gender diversity within the REITs board composition literature.
Volunteer choice of nonprofit organisation: an integrated framework
Authors: Mitchell Sarah-Louise , Clark Moira 
Published: September 2020

PurposeThis paper aims to explore how volunteers choose one nonprofit organisation (NPO) rather than another. It identifies the drivers of choice, and the relationship between them, to enable NPOs to strengthen their volunteer recruitment.Design/methodology/approachA total of 51 service-delivery volunteers were interviewed, drawn from 5 leading NPOs. A laddering technique was used to understand the context in which the choice of organisation was made and the underlying personal needs and goals. The data was analysed using means-end chain (MEC) methodology to uncover the relationships between, and hierarchy of, the decision drivers.FindingsBrand, cause, and role were found to be important in meeting personal needs and goals through volunteering. The paper makes three contributions. Firstly, it presents a clearer understanding of NPO choice through adopting an integrated theoretical perspective. Secondly, it identifies the decision-making process and key relationships between the attributes of the NPO, the consequences for the volunteer, and the connection to their personal needs. Finally, the study makes an important contribution to literature through presenting a new conceptual framework of volunteer decision-making in the nonprofit context to act as a catalyst for future research.Research limitations/implicationsThis research is both impactful through, and limited by, its context selection: regular service-delivery volunteers from five NPOs within two causes. The paper presents a rich research stream to extend this understanding to other nonprofit stakeholders, other causes including medical volunteer, and smaller NPOs.Practical implicationsIn an increasingly competitive nonprofit environment with a growing need to support the vulnerable in society, NPO sustainability is dependent on their ability to recruit new volunteers. NPOs compete not only with other organisations with similar causes but also those offering similar volunteering roles, and other uses of time to meet personal needs such as sport, career, or community. Understanding how volunteers make their choice of NPO rather than other uses of their time is of vital importance to make the most effective use of scarce marketing resources. This paper contributes to that practitioner understanding.Originality/valueTo the best of the authors’ knowledge, this study is the first to extend the understanding of generic motivations of volunteers to consider specific choice of NPO. Unlike previous literature, the authors bring together theory on brand, cause, and role with personal needs. The authors are also the first to apply MEC methodology to the nonprofit context to uncover the personal underlying, less salient reasons behind NPO choice and the relationship between them.
Alternative future images of Tehran: scenario-based analysis
Authors: Firoozpour Armin , Marzban Ehsan , Pourezzat Ali Asghar 
Published: September 2020

Purpose
Thinking and deciding about the future of the city as a combination of complex and uncertain systems is extremely difficult. This complexity, uncertainty and difficulty will be increased when our thoughts and decisions address the city’s long-term future. Considering these issues, the need for future thinking and alternate thinking in the process of urban management and planning becomes even more necessary. The purpose of this paper is to identify and explain the alternate futures of Tehran.

Design/methodology/approach
For this purpose, this study have tried to study alternate future images of Tehran in an archetypal form of “growth, collapse, disciplined society and transformed society” using “Dator’s Four Generic Alternate Futures” method.

Findings
These alternate futures, after identifying their key trends and drivers, have been narrated in the form of four scenarios called: “capital business center,” “crossing the fate of ray,” “Tehran family” and “Tehran investigators.” Increasing the authority and responsibility of the local governance, modification of Tehran urban management model and development of voluntary cooperation and democratic participation, are among the policy recommendations made on the basis of these images.

Originality/value
Achieving these images in parallel with identifying the most important challenges and opportunities in alternate futures will provide the basis for policy-making in Tehran’s future urban governance. It can be a creative model for developing future images for other cities.
Gender diversity, corporate governance and financial risk disclosure in the UK
Authors: Bufarwa Idris M. , Elamer Ahmed A. , Ntim Collins G. , AlHares Aws 
Published: September 2020

PurposeThis study aims to investigate the impact of corporate governance (CG) mechanisms on financial risk reporting in the UK.Design/methodology/approachThe study uses a panel data of 50 non-financial firms belonging to 10 industrial sectors listed on the London Stock Exchange in the period 2011-2015. Multivariate regression techniques are used to examine the relationships.FindingsThe findings of this study reveal that CG has a significant influence on financial risk disclosure. Specifically, it is found that block ownership and board gender diversity have a positive effect on the level of corporate financial risk disclosure (FRD). While there is no significant relationship between board size and corporate FRD.Research limitations/implicationsThis study has significant implications for policy-makers, investors and regulators. Evidence of growing FRD implies that efforts by several stakeholders have had some positive impact on the level of FRD in the firms examined. Examples of such changes include, namely, increasing board size and gender diversity acting as effective firm level advisors and monitors of FRD. As a consequence, regulators and policymakers should continually pursue reforms to encourage firms to follow CG principles that are promoted as good practice.Originality/valueThis study adds to the emerging body of literature on CG–risk disclosure relationships in the UK context using content analysis. The study also highlights that gender diversity enhances FRD.
A moderated mediation model of employee experienced diversity management: openness to experience, perceived visible diversity discrimination and job satisfaction
Authors: Alam Mohammad Shahin , Shin DuckJung 
Published: September 2020

PurposeThis study developed and tested a moderated mediation model on workplace diversity management. The analysis examined whether diversity management affects job satisfaction via perceived discrimination, depending on employees' openness to experience.Design/methodology/approachBuilding upon the assumptions of social identity theory, social cognitive theory and Big-Five theory, this study proposed and tested a model that analyzes the process through which diversity management influences perceived visible diversity discrimination and job satisfaction, depending on employees' openness to experience.FindingsThis study found support for the proposed moderated mediation model, which suggests that diversity management interacts with employees' openness to experience personality to influence their job satisfaction through perceived visible diversity discrimination. The results indicated that diversity management increased employees' job satisfaction in the workplace and that the relationship between diversity management and job satisfaction was further mediated by employees' perceptions of being discriminated against because of their age, gender and racial identities. The effect of diversity management on job satisfaction through perceived visible diversity discrimination was stronger when employees had high levels of openness to experience.Practical implicationsThe results of the study suggest that the diversity management is an important organizational intervention to improve job satisfaction by providing a scientific explanation of its underlying psychological process and identifying the factors associated with the process, such as personality and perception of being discriminated.Originality/valueThis study contributes to extend the diversity management literature by applying the assumptions of social identity theory, social cognitive theory and Big-Five theory together to identify the relationship between diversity management and job satisfaction and the effect of perceived discrimination and openness to experience in the relationship.
Intellectual capital of SMEs in Thailand: an employee behavioural measurement instrument
Authors: Na-Nan Khahan , Kanthong Suteeluck N. , Khummueng Kattikamat , Dhienhirun Auemporn 
Published: September 2020

Purpose
Intellectual capital (IC) is an important factor to push and drive organisations to achieve competitive advantages and growth. This study aims to develop and test an instrument to measure IC for employee behaviour in the context of small and medium-sized enterprises (SMEs).

Design/methodology/approach
The measurement instrument was designed after assessing literature reviews on IC that provided a strong theoretical support for application of a specific set of items in the SME context. Instrument validity and reliability were tested for item-objective congruence by five experts. The results ranged between 0.8 and 1.0, with a reliability coefficient of 0.950. Exploratory factor analysis and confirmatory factor analysis were used to confirm construct validity between theoretical and empirical evidence. Data were collected from 240 hairdressers employed by SMEs in Thailand.

Findings
The results revealed that IC can be classified into two groups as human capital and relational capital. Constructs between theoretical concepts and empirical evidence gave values of χ2 = 42.336, df = 35, p = 0.184, χ2/df = 1.210, GFI = 0.972, AGFI = 0.938, RMSEA = 0.030 and SRMR = 0.018.

Research limitations/implications
Empirical findings were derived from a sample of 240 hairdressers. However, validation and reliability of the instruments require confirmation in various other contexts with a larger number of samples. This cross-sectional study identified the effects of IC in SMEs, thereby contributing to the ongoing debate regarding the determinants of research performance.

Originality/value
The IC instrument was determined as valid and fulfilled the knowledge gap concerning SMEs by facilitating future studies on boundaries with IC assessment spanning SME contexts. This instrumental support will assist researchers and academics to develop a more comprehensive understanding of IC and explore its potential in future research areas.
Towards energy transition at the Faculty of Education of Bilbao (UPV/EHU): diagnosing community and building
Authors: Ortega Lasuen Unai , Ortuzar Iragorri Maria Arritokieta , Diez Jose Ramon 
Published: September 2020

Purpose
This paper aims to present the results of a study aimed at performing a first diagnosis of energy literacy and energy use in a Faculty of Education, by means of identifying energy consumption patterns, as well as energy literacy and commitments regarding energy transition. This diagnosis is the basis for establishing the foundations of a path toward energy transition in the faculty and further designing energy saving and education strategies.

Design/methodology/approach
Quantitative and qualitative data were collected in a mixed-method approach. A survey was arranged to assess the attitudes, habits and knowledge regarding the current energy system within the community of the Faculty (407 responses). Comparisons among the main collectives that make up the community were performed, i.e. students, teaching and research staff and management and services staff. In parallel, the general electric consumption of the faculty was monitored. The results of these diagnostics were presented at several forums and workshops on energy transition held in the faculty where personal commitments in favor of energy transition were gathered and further categorized (105 initiatives).

Findings
Positive attitudes toward energy saving were observed, reflecting in different generic habits. Additionally, some belief or hope for a technological solution for current and future energy problems was detected, as well as a lower level of implication or commitment when specifying personal attitudes. Similarly, widespread ignorance of the current energy context was revealed, regarding both the energy system and household energy consumption. Concerning the undertaking of personal commitments, low impact energy saving habits prevailed, and knowledge was not identified as being a necessary element of energy saving education in attitudes and habits.

Practical implications
This research provides relevant information for the design of educational interventions to promote energy literacy in higher education institutions.

Originality/value
The survey provides valuable insights regarding future educators’ and their current teachers’ energy literacy in a challenging energy context. The lack of general knowledge about the energy context in the community, together with the limited impact of the commitments gathered among students, stresses the need for integration of basic energy contents, both within education degrees and the management strategy of the faculty.
The impact of political instability driven by the Tunisian revolution on the relationship between Google search queries index and financial market dynamics
Authors: Trichilli Yousra , Abbes Mouna Boujelbène , Zouari Sabrine 
Published: September 2020

PurposeThis paper examines the impact of political instability on the investors' behavior, measured by Google search queries, and on the dynamics of stock market returns.Design/methodology/approachFirst, by using the DCC-GARCH model, the authors examine the effect of investor sentiment on the Tunisian stock market return. Second, the authors employ the fully modified dynamic ordinary least square method (FMOL) to estimate the long-term relationship between investor sentiment and Tunisian stock market return. Finally, the authors use the wavelet coherence model to test the co-movement between investor sentiment measured by Google Trends and Tunisian stock market return.FindingsUsing the dynamic conditional correlation (DCC), the authors find that Google search queries index has the ability to reflect political events especially the Tunisian revolution. In addition, empirical results of fully modified ordinary least square (FMOLS) method reveal that Google search queries index has a slightly higher effect on Tunindex return after the Tunisian revolution than before this revolution. Furthermore, by employing wavelet coherence model, the authors find strong comovement between Google search queries index and return index during the period of the Tunisian revolution political instability. Moreover, in the frequency domain, strong coherence can be found in less than four months and in 16–32 months during the Tunisian revolution which show that the Google search queries measure was leading over Tunindex return. In fact, wavelet coherence analysis confirms the result of DCC that Google search queries index has the ability to detect the behavior of Tunisian investors especially during the period of political instability.Research limitations/implicationsThis study provides empirical evidence to portfolio managers that may use Google search queries index as a robust measure of investor's sentiment to select a suitable investment and to make an optimal investments decisions.Originality/valueThe important research question of how political instability affects stock market dynamics has been neglected by scholars. This paper attempts principally to fill this void by investigating the time-varying interactions between market returns, volatility and Google search based index, especially during Tunisian revolution.