bluuebunny/crossref_metadata_2025_split huggingface dataset:
Examination of digital images from Macaulay Library to determine avian molt strategies: A case study on molts and plumages in eight species of North American hummingbirds
Authors: Pyle Peter 
Published: February 2021

AbstractI examined a total of 27,581 images of 6.345 individuals from the Cornell Lab of Ornithology’s Macaulay Library to clarify conflicting reports on molt and plumage strategies in eight species of hummingbirds that breed or have bred primarily in the southwestern United States. Fixed replacement sequences from two nodes among primaries and two nodes among secondaries were found without exception, conforming to the findings of previous studies. I concluded that the preformative molt is limited to partial in three species, partial to incomplete in three species, partial to complete in one species, and complete in one species. These molt strategies could be interpreted as having differentiated through synapomorphy, with species between currently recognized clades varying in the extent of their preformative molts; however, given the plastic nature of molt strategies, I predict that this variation will be shaped more by environmental factors than by synapomorphy. Results of this study additionally clarify molt terminology in Trochilidae as based on homologies and establish new criteria for age determinations. The Macaulay Library clearly provides an important resource for the investigation of avian molts and plumages. The results of a validation exercise that I conducted indicate that banders and field ornithologists with a wide range of previous experience can collect accurate data in this manner. I present a road map for such studies and suggest many other questions on avian molt that can also be investigated, including how timing of molts vary geographically and by habitat and how remigial replacement sequences proceed in little-known bird families. I encourage contributors to the Macaulay Library to take and upload images of birds in molt or in worn plumages.
hC9ORF78 localizes to kinetochores and is required for proper chromosome segregation
Authors: Koranne Radhika , Brown Kayla M. , Vandenbroek Hannah E. , Taylor William R. 
Published: February 2021

AbstractC9ORF78 is a poorly characterized protein found in diverse eukaryotes. Previous work indicated overexpression of hC9ORF78 (aka HCA59) in malignant tissues indicating a possible involvement in growth regulatory pathways. Additional studies in fission yeast and humans uncover a potential function in regulating the spliceosome. In studies of GFP-tagged hC9ORF78 we observed a dramatic reduction in protein abundance in cells grown to confluence and/or deprived of serum growth factors. Serum stimulation induced synchronous re-expression of the protein in HeLa cells. This effect was also observed with the endogenous protein. Overexpressing either E2F1 or N-Myc resulted in elevated hC9ORF78 expression potentially explaining the serum-dependent upregulation of the protein. Immunofluorescence analysis indicates that hC9ORF78 localizes to nuclei in interphase but does not appear to concentrate in speckles as would be expected for a splicing protein. Surprisingly, a subpopulation of hC9ORF78 co-localizes with ACA, Mad1 and Hec1 in mitotic cells suggesting that this protein may associate with kinetochores or centromeres. Furthermore, knocking-down hC9ORF78 caused mis-alignment of chromosomes in mitosis. These studies uncover novel mitotic function and subcellular localization of cancer antigen hC9ORF78.SUMMARY STATEMENThC9ORF78 regulates chromosome segregation.
Single molecule tracking of AMPA receptors shows the role of synaptic insertion during maintenance of chemical LTP
Authors: Jin Chaoyi , Jang Sung-Soo , Ge Pinghua , Chung Hee Jung , Selvin Paul 
Published: February 2021

AbstractLong term potentiation (LTP) likely contributes to memory formation. Early expression of LTP involves insertion of AMPA receptors (AMPARs) to the extrasynaptic membrane followed by their lateral diffusion into the synaptic membrane. However, whether a similar mechanism mediates the maintenance of LTP is unclear. Using single-molecule microscopy, we quantified that 6 GluA1- and 11 GluA2-containing endogenous AMPARs were added per synapse in cultured hippocampal neurons at 20 min following chemical LTP (cLTP) induction for 10 min, resulting in a 54% increase for both subunits. Single molecular tracking of transfected subunits revealed that the number of exocytosed subunits at the synapse increased by 15-18% from 5 to 20 min following cLTP induction, but their lateral exchange between synaptic and extrasynaptic membranes was minimal. These findings suggest that cLTP maintenance is contributed largely by synaptic insertion of AMPARs rather than the surface diffusion of exocytosed AMPARs from extrasynaptic to synaptic regions.
Essential role of CFAP53 in sperm flagellum biogenesis
Authors: Wu Bingbing , Yu Xiaochen , Liu Chao , Wang Lina , Huang Tao , Lu Gang , Chen Zi-Jiang , Li Wei , Liu Hongbin 
Published: February 2021

AbstractThe sperm flagellum is essential for male fertility. Despite vigorous research progress towards understanding the pathogenesis of flagellum-related diseases, much remains unknown about the mechanisms underlying the flagellum biogenesis itself. Here, we show that the cilia and flagella associated protein 53 (Cfap53) gene is predominantly expressed in testes, and it is essential for sperm flagellum biogenesis. The knockout of this gene resulted in complete infertility in male mice but not in the females. CFAP53 localized to the manchette and sperm tail during spermiogenesis, the knockout of this gene impaired flagellum biogenesis. Furthermore, we identified two manchette and sperm tail-associated proteins that interacted with CFAP53 during spermiogenesis. The disruption ofCfap53decreased the expression level of these two proteins and disrupted their localization in spermatids. Together, our results suggest that CFAP53 is an essential protein for sperm flagellum biogenesis, and its mutations might be associated with MMAF.
The role of extracurricular activities in shaping university students' employment self-efficacy perceptions
Authors: Kanar Adam , Bouckenooghe Dave 
Published: February 2021

PurposeThe present study aimed to understand how participation in university extracurricular activities has a beneficial or detrimental impact on students’ employment self-efficacy through the intervening mechanism of information search strategy.Design/methodology/approachThe authors collected data from active job-searching university students across two time-points and hypothesized that the breadth of extracurricular activity participation would positively impact employment self-efficacy perceptions and information search strategies (focused, exploratory and haphazard) would mediate this relationship.FindingsResults indicate that the breadth of students' participation in extracurricular activities was positively associated with employment self-efficacy perceptions, and this relationship was mediated by focused and exploratory information-search strategies. Extracurricular activities exhibited a negative relationship with a haphazard search strategy.Research limitations/implicationsThis research extends the understanding of the role of participation in extracurricular activities for influencing a job search. Future research may replicate these findings with different samples of job seekers.Practical implicationsExtracurricular activities are typically offered at universities as a way for students to develop skills and to improve employers' perceptions of students. The present results suggest that participating in extracurricular activities may also help university students to effectively conduct a self-directed job search.Originality/valueWe examined the role of extracurricular activities from the applicant's perspective, extending prior research examining extracurricular activities from the employer's perspective. The present results suggest that extracurricular activities play an important role in shaping the job search process of university students by influencing students' confidence for finding employment. Information search strategies mediated the effects of extracurricular activities on employment self-efficacy perceptions, suggesting that participating in extracurricular activities changed the way that applicants searched for jobs.
Adolescent English language learners’ digitally mediated multimodal compositions: multimodal enactment across different genres of writing in the EFL context
Authors: Kang Joohoon 
Published: February 2021

PurposeThis paper aims to investigate adolescent English as a foreign language (EFL) learners’ digitally mediated multimodal compositions across different genres of writing.Design/methodology/approachThree Korean high school students participated in the study and created multiple multimodal texts over the course of one academic semester. These texts and other materials were the basis for this study’s qualitative case studies. Multiple sources of data (e.g. class observations, demographic surveys, interviews, field notes and students’ artifacts) were collected. Drawing upon the inductive approach, a coding-oriented analysis was used for the collected data. In addition, a multimodal text analysis was conducted for the students’ multimodal texts and their storyboards.FindingsThe study participants’ perceptions of multimodal composing practices seemed to be positively reshaped as a result of them creating multimodal texts. Some participants created multimodal products in phases (e.g. selecting or changing a topic, constructing a storyboard and editing). Especially, although the students’ creative processes had a similarly fixed and linear flow from print-based writing to other modalities, their creative processes proved to be flexible, recursive and/or circular.Originality/valueThis study contributes to the understanding of adolescent English language learners’ multimodal composing practices in the EFL context, which has been underexplored in the literature. It also presents the students’ perspectives on these practices. In short, it provides theoretical and methodological grounds for future L2 literacy researchers to conduct empirical studies on multimodal composing practices.
Thermosolutal convection of a nanofluid in ∧-shaped cavity saturated by a porous medium
Authors: Aly Abdelraheem M. , Raizah Zehba 
Published: February 2021

Purpose
The purpose of this study is to simulate the thermo-solutal convection resulting from a circular cylinder hanging in a rod inside a ∧-shaped cavity.

Design/methodology/approach
The two dimensional ∧-shaped cavity is filled by Al2O3-water nanofluid and saturated by three different levels of heterogeneous porous media. An incompressible smoothed particle hydrodynamics (ISPH) method is adopted to solve the governing equations of the present problem. The present simulations have been performed for the alteration of buoyancy ratio

(−2≤N≤2), radius of a circular cylinder

(0.05≤Rc≤0.3), a height of a rod

(0.1≤Lh≤0.4), Darcy parameter

(10−3≤Da≤10−5), Lewis number

(1≤Le≤40), solid volume fraction

(0≤ϕ≤0.06), porous levels

(0≤η1=η2≤1.5)and various boundary-wall conditions.

Findings
The performed numerical simulations indicated the importance of embedded shapes on the distributions of temperature, concentration and velocity fields inside ∧-shaped cavity. Increasing buoyancy ratio parameter enhances thermo-solutal convection and nanofluid velocity. Adiabatic conditions of the vertical-walls of ∧-shaped cavity augment the distributions of the temperature and concentration. Regardless the Darcy parameter, a homogeneous porous medium gives the lowest values of a nanofluid velocity.

Originality/value
ISPH method is used to simulate thermo-solutal convection of a nanofluid inside a novel ∧-shaped cavity containing a novel embedded shape and heterogeneous porous media.
Female entrepreneurs’ cognitive attributes and venture growth in Japan: the moderating role of perceived social legitimacy
Authors: Kawai Norifumi , Kazumi Tomoyo 
Published: February 2021

PurposeBy drawing upon social cognitive and legitimacy perspectives, this study aims to explore the role of perceived social legitimacy as an informal institutional force that moderates the effects of female entrepreneurs’ self-efficacy and entrepreneurial tenacity on venture growth.Design/methodology/approachThis study uses a data set of 308 Japanese female entrepreneurs, who are a subject of limited extant scholarly attention, to test the hypothesised relationships empirically.FindingsConsistent with the unified framework, the study was able to identify that the acquisition of social legitimacy required by female entrepreneurs serves as a crucial safety net under which entrepreneurial self-efficacy and tenacity can significantly affect venture growth.Research limitations/implicationsThe study highlights that high levels of entrepreneurial traits alone are not necessarily sufficient to guarantee women’s venture growth. In doing so, this study stimulates the development of theory on the complementary role of the social legitimacy of entrepreneurship in fueling and mobilising the female entrepreneurs’ cognitive resources as the key to venture growth in the Japanese context.Practical implicationsPolicymakers should be dedicated to implementing more gender-specific policies designed to continually cultivate women’s cognitive attributes in tandem with the promotion of social awareness to embrace entrepreneurship as a promising career option.Originality/valueThe originality of this study lies in stimulating a debate on the underlying heterogeneity of female entrepreneurs in the performance outcomes of two entrepreneurial cognitive attributes. By integrating the concept of perceived social legitimacy, the study can respond to Miaoet al.(2017), who sought further examination of untested boundary conditions in the cognitive characteristics-venture growth equation.
Conceptualizing financial capability: evidence from Indonesia
Authors: Lubis Arief Wibisono 
Published: February 2021

PurposeThis paper aims to investigate how microfinance institutions’ clients in Indonesia conceptualize financial capability. Previous investigations on the concept were mostly in the lenses of those in the developed economies.Design/methodology/approachA qualitative method was used, in which focus group discussions (FGDs) and interviews were conducted with microfinance institutions’ clients and management in four provinces in Indonesia: DKI Jakarta, DI Yogyakarta, West Nusa Tenggara and South Sulawesi.FindingsThe results exhibit some similarities with those of previous studies that highlight the importance of financial management and financial planning for strategic purposes. However, financial literacies perceived as less important due to the lack of awareness of the concept and its benefits.Research limitations/implicationsThis research is only focused on certain groups of the population which implies its limited generalizability. One important implication is for policymakers and scholars to re-examine the value of financial literacy within the context of Indonesia. Although the interviews reveal skepticisms on the instrumental value of financial literacy, robust investigations are further needed.Originality/valueThis study is the first that uses the participatory method to define financial capability as understood by microfinance institutions’ clients in Indonesia.
Responsible leadership and COVID-19: small Island making big waves in cruise tourism
Authors: Pounder Paul 
Published: February 2021

PurposeThe purpose of this paper is to explore responsible leadership and crisis management. Many sectors and economies have faced the stark effect of coronavirus; however, the damage done was felt more in some areas than others. Cruise tourism is one such sector dramatically affected, as it ground to a screeching halt in March 2020. This has led to crisis management, as passengers, cruise-line crew, large cruise companies and governments were now faced with a new reality as countries around the world closed their borders. This article aims at discussing in detail how responsible leadership, in the small island of Barbados, championed a response to support the cruise tourism sector and assist in managing the crisis.Design/methodology/approachThe author conducted a literature review on the current knowledge relating leadership and crisis management. Thus building a better understanding in the field and identifying gaps for making new arguments for best practices of leadership development in crisis management established in the cruise tourism sector. The author gave viewpoints based on the leadership style of the Prime Minister of Barbados.FindingsResponsible leadership is a style that has been best observed as one that emphasizes a commitment to the common good and provides a constructive societal impact. With this approach, the leaders navigated the uncertainty surrounding the crisis and provided fresh hope to future plans. Thus, the coronavirus was perceived in a positive way, producing opportunities for progress and change.Research limitations/implicationsBy developing an understanding of traditional leadership theories, it provides a framework for the adaptation of responsible leadership approach in crisis management. Moreover, the practice of responsible leadership in this COVID-19 era is shown to be crucial to crisis management and enhancing performance. Limitations on viewpoint are based on the author's philosophies.Practical implicationsThis paper provides a better understanding of the principles surrounding leadership and fashions a framework for discussing responsible leadership from a crisis management standpoint. The viewpoint provides an optimistic difference in managing a crisis.Social implicationsThe paper provides a better understanding of responsible leadership as an integrated approach to governance, ethics and social responsibility. The paper provides a basis to assess the intersection of the literature on leadership and crisis management.Originality/valueThis article contributes to the literature on responsible leadership within the context of crisis management.
Preparing for a crisis: examining the influence of fear and anxiety on consumption and compliance
Authors: Kemp Elyria , Bui My (Myla) , Porter, III McDowell 
Published: February 2021

Purpose
This research aims to examine the unique emotional distress experienced during the coronavirus (COVID-19) outbreak. It explores the role of fear and anxiety, what fueled it and how fear and anxiety impacted consumption and behaviors of conformity and compliance.

Design/methodology/approach
An exploratory assessment of the emotions and behaviors of individuals during the early part of the coronavirus outbreak (early March 2020) was conducted by sending a questionnaire to a national panel (n = 42). The insight offered from these individuals, in conjunction with prior literature, provided the basis for the development of a conceptual model that was tested using survey methodology (n = 691).

Findings
Both exploratory and empirical research indicate that ruminative thoughts were positively related to feelings of fear and anxiety, whereas trust in leadership was negatively related to fear and anxiety. Feelings of fear and anxiety were also associated with purchasing in large quantities, in compliance with guidelines to slow the spread of the virus and the management of negative feelings through consumption.

Practical implications
Important insight for marketers and public policymakers in how fear and anxiety might be both tempered and mitigated during emergencies is offered.

Originality/value
This research provides new insight into what fuels fear and anxiety during a pandemic and investigates how fear and anxiety impacts consumption and behaviors of conformity and compliance.
Shopping well-being: the role of congruity and shoppers’ characteristics
Authors: El Hedhli Kamel , Becheur Imene , Zourrig Haithem , Chaouali Walid 
Published: February 2021

Purpose
Although shopping well-being has become a focal construct in retail shopping studies, little is known about the key drivers of this construct. This study aims to further discern some of the key antecedents of shopping well-being by particularly focusing on the role of congruity. Furthermore, the study explores whether shoppers’ demographic characteristics moderate the effects of congruity on shopping well-being.

Design/methodology/approach
Data were collected from a survey of actual shoppers in two urban Canadian shopping malls via a mall intercept. Structural equation modeling using SmartPLS was conducted to validate the study’s model.

Findings
Functional congruity has a stronger effect than self-congruity on shopping well-being. Shoppers’ demographic variables do not generally act as moderators in the investigated linkages.

Practical implications
This study can help mall managers formulate better marketing programs that would ultimately enhance shopping well-being.

Originality/value
The study advances the retailing literature by putting forward a conceptual model that remedies identified shortcomings related to functional and self-congruity and establishes new linkages between functional congruity, self-congruity and shopping well-being. Furthermore, the study explores whether shoppers’ demographic variables moderate the effects of functional and self-congruity on shopping well-being.
Challenges and enablers of women entrepreneurs’ career advancement in Vietnam’s coffee industry
Authors: Nguyen Giang NT , Hoang Thinh Gia , Nguyen Tam Minh , Ngo Thanh Thien 
Published: February 2021

Purpose
This paper aims to explore the motivational factors and contextual facilitators of female entrepreneurs in Vietnam’s coffee industry and also the barriers facing them.

Design/methodology/approach
This study adopts the grounded theory approach, using semi-structured in-depth interviews with 31 women entrepreneurs in the coffee industry in the rural Central Highlands of Vietnam.

Findings
This study found that necessity-driven factors play an important role in motivating female entrepreneurs to advance their careers. However, these factors may be transformed into the opportunity-driven motives. Furthermore, the findings suggest that Asia’s collectivism culture and family support significantly affect the success of the women entrepreneurs, although gender inequality is not perceived as a serious constraint in entrepreneurial activities.

Research limitations/implications
This study has implications for the literature of women entrepreneurs regarding motivations and contextual influences in agricultural and rural areas of Vietnam. However, the sample size is relatively small which limits the concept generation of the study. For further research, a larger sample size with different business sectors should be considered to generate more explicit findings.

Practical implications
The findings from this study can assist the policymakers in developing strategies and governmental policies to support the career advancement of women entrepreneurs and improving gender equality in Vietnam.

Originality/value
This study contributes to the literature about understanding the motives and the roles of socioeconomic contexts in women’s entrepreneurial activities in agricultural and rural areas.