bluuebunny/crossref_metadata_2025_split huggingface dataset:
High school students’ role-playing for identity exploration: findings from virtual city planning
Authors: Foster Aroutis , Shah Mamta , Barany Amanda , Talafian Hamideh 
Published: October 2019

Purpose
This paper aims to report findings for the following question, “What is the nature of high school students’ identity exploration as a result of exploring the role-possible selves of an environmental scientist and urban planner in a play-based course?” Projective reflection (PR) is served as a theoretical and methodological framework for facilitating learning as identity exploration in play-based environments.

Design/methodology/approach
From 2016-2017, 54 high school freshmen students engaged in virtual city planning, an iteratively refined course that provided systematic and personally relevant opportunities for play, curricular, reflection and discussion activities in Philadelphia Land Science, a virtual learning environment (VLE) and in an associated curriculum enacted in a science museum classroom. Participants’ identity exploration was anchored in targeted role-possible selves in science, technology, engineering and mathematics: environmental science and urban planning through in-game and in-class activities. This role-playing was made intentional by scaffolding students’ reflection on what they wanted to be in the future while thinking of their current selves and exploring novel role-possible selves.

Findings
In-game logged data and in-class student data were examined using quantitative ethnography (QE) techniques such as epistemic network analysis. Whole-group statistical significance and an illustrative case study revealed visual and interpretive patterns of change in students’ identity exploration. The change was reflected in their knowledge, interest and valuing, self-organization and self-control and self-perception and self-definition (KIVSSSS) in relation to the roles explored from the start of the intervention (starting self), during (exploring role-possible selves) and the end (new self). The paper concludes with directions to advance research on leveraging role-playing as a mechanism for fostering identity exploration in play-based digital and non-digital environments.

Originality/value
This paper leveraged VLEs such as games as forms of play-based environments that can present players with opportunities for self-transformation (Foster, 2014) and enculturation (Gee 2003; Shaffer, 2006) to support learner agency and participation in a constantly changing society (Thomas and Brown 2011). The authors introduce and apply novel theoretical and methodological approaches to the design and assessment of play-based environments and address pertinent gaps in the emergent area of learning and identity in VLEs
Investigation of normal and tangential contact stiffness considering surface asperity interaction
Authors: Yang Hongping , Che Xiaowei , Yang Cheng 
Published: October 2019

Purpose
This paper aims to propose a normal and tangential contact stiffness model to investigate the contact characteristics between rough surfaces of machined joints based on fractal geometry and contact mechanics theory considering surface asperities interaction.

Design/methodology/approach
The fractal geometry theory describes surface topography and Hertz contact theory derives the asperities elastic, elastic-plastic and plastic contact deformation. The joint normal and tangential contact stiffness are obtained. The experiment method for normal and tangential contact stiffness are introduced.

Findings
The relationship between dimensionless normal contact load and dimensionless normal and tangential contact stiffness are analyzed in different plasticity index. The results show that they are nonlinear relationships. The normal and tangential contact stiffness are obtained based on theoretical and experimental methods for milling and grinding machined specimens. The results indicate that the present model for the normal and tangential contact stiffness are consistent with experimental data, respectively.

Originality/value
The normal and tangential contact stiffness models are constructed by using the fractal geometry and the contact mechanics theory considering surface asperities interaction, which includes fully elastic, elastic-plastic and fully plastic contacts deformation. The present method can generate a more reliable calculation result as compared with the contact model no-considering asperities interaction.
Motives to participate in an online community for professionals
Authors: Imroz Sohel M. 
Published: October 2019

PurposeAlthough the numbers of online community members continue to increase every day, most of the user-generated content in online communities comes from only a small percentage of members who are motivated to participate and contribute. While studies have been conducted on other professional online communities (e.g. teachers, mathematics practitioners, software developers, etc.), the online community for ServiceNow practitioners is not fully understood. Studies of this group could be useful to organizations that seek to understand ServiceNow practitioners’ motives to participate in these communities, fulfill their specific needs, and build and maintain a thriving community of users.Design/methodology/approachA qualitative case study method was used to learn what motivates ServiceNow practitioners to contribute and participate in ServiceNow communities. Data were collected from interviews with the participants, their stories and testimonials and physical artifacts created and used by them. Data analysis was carried out using data triangulation and continuous coding process.FindingsThree primary motives were identified: find answers to questions or issues, learn about ServiceNow products and services, and share knowledge and expertise with others.Research limitations/implicationsAs a single-case research method was used, findings of this study may not be generalized to a larger population.Originality/valueResults should encourage and increase participation by ServiceNow Community's members, create a repository of knowledge and relationships that can improve their value and effectiveness, and help their organizations maintain competitive advantage.
Internal marketing, organizational commitment, and job performance in sport and leisure services
Authors: Chiu Weisheng , Won Doyeon , Bae Jung-sup 
Published: October 2019

PurposeThe purpose of this paper is to propose a conceptual model and to investigate the relationships among internal marketing, organizational commitment and job performance in sport and fitness services.Design/methodology/approachData were collected using a questionnaire survey from 254 employees at each of 12 municipal sport centers in Taipei City and were analyzed primarily using structural equation modeling techniques.FindingsThe results indicated that internal marketing has positive effects on organizational commitment and job performance. Moreover, organizational commitment has a positive influence on job performance and plays a partial mediating role in the relationship between internal marketing and job performance. The findings identify the relationships among internal marketing, organizational commitment and job performance.Originality/valueThis study proposed and tested an empirical model linking internal marketing, organizational commitment and job performance in sport and fitness services. Moreover, this study further probed into the path of influence of internal marketing strategies on job performance of employees by including their organizational commitment in the mediating process. The findings of this study have insightful implications and emphasize the important role of internal marketing in the management of customer service in sports.
Do CEO incentives and characteristics influence corporate social responsibility (CSR) and vice versa? A literature review
Authors: Velte Patrick 
Published: October 2019

PurposeThis paper aims to analyze whether chief executive officer (CEO) incentives and characteristics (e.g. CEO power, CEO tenure) are linked with corporate social responsibility (CSR) and vice versa.Design/methodology/approachBased on upper echelons theory, the author conducts a structured literature review and evaluates 84 empirical-quantitative studies on CEO and CSR variables.FindingsWhile the majority of the included studies analyzed the CEO-CSR link, there are indicators for a bidirectional relationship. Moreover, prior research has focused on CEO incentives, especially compensation contracts, and on the US capital market. A major research gap relates to CEO characteristics, e.g. CEO values, education and experience.Research limitations/implicationsHeterogeneous CEO and CSR variables and endogeneity concerns lower the validity of recent studies. Future research is encouraged to implement dynamic regression models, increase CSR and CEO proxies and focus on international samples with country-specific effects.Practical implicationsAs CEO activities can have a major impact on CSR activities, the author recommends firms to search for opportunities to make their CSR strategy more comprehensive by their stakeholder communication, thus providing deeper insights into their CSR performance in line with stakeholders’ interests.Originality/valueThe paper is the first literature review on the interaction between CEO and CSR so far. The author explains the main CEO and CSR variables that have been included in research, stresses the limitations of the studies and gives useful recommendations for future research, practice and regulators.
Lysine acetylation contributes to development, aflatoxin biosynthesis and pathogenicity in Aspergillus flavus
Authors: Yang Guang , Yue Yuewei , Ren Silin , Yang Mingkun , Zhang Yi , Cao Xiaohong , Wang Yinchun , Zhang Jia , Ge Feng , Wang Shihua 
Published: October 2019

SummaryAspergillus flavus is a pathogenic fungus that produces carcinogenic aflatoxins, posing a great threat to crops, animals and humans. Lysine acetylation is one of the most important reversible post‐translational modifications and plays a vital regulatory role in various cellular processes. However, current information on the extent and function of lysine acetylation and aflatoxin biosynthesis in A. flavus is limited. Here, a global acetylome analysis of A. flavus was performed by peptide pre‐fractionation, pan‐acetylation antibody enrichment and liquid chromatography–mass spectrometry. A total of 1313 high‐confidence acetylation sites in 727 acetylated proteins were identified in A. flavus. These acetylation proteins are widely involved in glycolysis/gluconeogenesis, pentose phosphate pathway, citric acid cycle and aflatoxin biosynthesis. AflO (O‐methyltransferase), a key enzyme in aflatoxin biosynthesis, was found to be acetylated at K241 and K384. Deletion of aflO not only impaired conidial and sclerotial developments, but also dramatically suppressed aflatoxin production and pathogenicity of A. flavus. Further site‐specific mutations showed that lysine acetylation of AflO could also result in defects in development, aflatoxin production and pathogenicity, suggesting that acetylation plays a vital role in the regulation of the enzymatic activity of AflO in A. flavus. Our findings provide evidence for the involvement of lysine acetylation in various biological processes in A. flavus and facilitating in the elucidation of metabolic networks.
In Ganoderma lucidum, Glsnf1 regulates cellulose degradation by inhibiting GlCreA during the utilization of cellulose
Authors: Hu Yanru , Xu Wenzhao , Hu Shishan , Lian Lingdan , Zhu Jing , Shi Liang , Ren Ang , Zhao MingWen 
Published: October 2019

SummaryCellulose is a by‐product of agricultural production and an abundant waste. As a carbon source, cellulose can be degraded and utilized by fungi. Carbon sources, which act as nutrients, not only provide energy but also serve as regulators of gene expression, metabolism and growth, through various signalling networks that enable cells to sense and adapt to varying environmental conditions. Nutrient‐sensing pathways prioritize the use of preferred carbon sources and regulate the production of cellulose‐degrading enzymes when necessary. Understanding the regulation of the fungal cellulolytic response will become increasingly important because we strive to increase the efficiency of the utilization of these renewable energy sources. Here, we show that Glsnf1, a sucrose‐nonfermenting serine–threonine‐protein kinase 1 (Snf1)/AMP‐activated protein kinase homologue in medicinal macro basidiomycete Ganoderma lucidum, actively responds to carbon alterations and positively regulates cellulase activity and cellulase‐related gene transcription. The carbon catabolite repressor CreA, a zinc binuclear cluster transcription factor that mediates the sensing of nutrients and suppression of the transcription of a number of genes necessary for the consumption of a less preferred carbon source, participates in the Glsnf1‐mediated regulation of cellulases. Glsnf1 not only negatively regulates the transcription level of the CreA gene but also hinders its localization in the nucleus. Overall, our findings reveal a key nutrient‐sensing mechanism that is critical for the modulation of carbon source adaptation in G. lucidum.
The polyphagous plant pathogenic fungusBotrytis cinereaencompasses host‐specialized and generalist populations
Authors: Mercier Alex , Carpentier Florence , Duplaix Clémentine , Auger Annie , Pradier Jean‐Marc , Viaud Muriel , Gladieux Pierre , Walker Anne‐Sophie 
Published: October 2019

SummaryThe host plant is often the main variable explaining population structure in fungal plant pathogens, because specialization contributes to reduce gene flow between populations associated with different hosts. Previous population genetic analysis revealed that French populations of the grey mould pathogenBotrytis cinereawere structured by hosts tomato and grapevine, suggesting host specialization in this highly polyphagous pathogen. However, these findings raised questions about the magnitude of this specialization and the possibility of specialization to other hosts. Here we report specialization ofB.cinereapopulations to tomato and grapevine hosts but not to other tested plants. Population genetic analysis revealed two pathogen clusters associated with tomato and grapevine, while the other clusters co‐occurred on hydrangea, strawberry and bramble. Measurements of quantitative pathogenicity were consistent with host specialization of populations found on tomato, and to a lesser extent, populations found on grapevine. Pathogen populations from hydrangea and strawberry appeared to be generalist, while populations from bramble may be weakly specialized. Our results suggest that the polyphagousB.cinereais more accurately described as a collection of generalist and specialist individuals in populations. This work opens new perspectives for grey mould management, while suggesting spatial optimization of crop organization within agricultural landscapes.
Evaluation of California‐Grown Blood and Cara Cara Oranges Through Consumer Testing, Descriptive Analysis, and Targeted Chemical Profiling
Authors: Simons Tyler J. , McNeil Christopher J. , Pham Vi D. , Suh Joon Hyuk , Wang Yu , Slupsky Carolyn M. , Guinard Jean‐Xavier 
Published: October 2019

AbstractThe acceptability of Moro, Tarocco, Cara Cara, Shahani, Bream Tarocco, Boukhobza, and Sanguinelli oranges from both commercial and research orchards was tested with adult (n = 152) and child (n = 72) consumers. Qualitative focus groups were also conducted to understand consumer familiarity and thoughts about the fruit. Sensory descriptive and chemical analyses were carried out to identify drivers of liking. Overall, consumers preferred the lighter colored varieties consisting of Tarocco, Cara Cara, and Boukhobza. One cluster of adults (n = 80) showed preferences towards sweet and fruity flavors and away from sourness and citric acid. The second adult cluster (n = 72) was tolerant of the sour fruit but did not like fruit high in bitterness and flavonoid content. The largest child cluster (n = 42) showed preferences for samples higher in orange and tropical flavors (Cara Cara, Tarocco, and Boukhobza varieties). The appearance of the Cara Cara was strongly liked by the consumer population in both quantitative and qualitative settings. Hunter scale a color values strongly correlated to the higher berry/dried fruit flavors, and concentrations of naringenin. Focus group participants noted that they were relatively unfamiliar with blood oranges. Growers and producers may want to invest in the lighter colored varieties, such as Cara Cara, Tarocco, Boukhobza and Shahani, as these were liked by a majority of consumers and were low in less desirable sensory characteristics, such as bitterness and sourness.Practical ApplicationThrough consumer tests, sensory evaluation, and chemical analyses, this research uncovered which sensory properties may drive consumer acceptance of blood and Cara Cara oranges, and informed potential production and marketing strategies for increasing their consumption. This information should benefit the citrus industry as a whole and may enhance the use of specialty oranges by the food, beverage, and food service industries.
Ideas, Institutions and the World Bank: The Social Protection and Fragile States Agendas
Authors: Mackinder Sophie 
Published: October 2019

AbstractIdeas and institutions are frequently used as explanatory concepts regarding policy development and change. There is an on‐going debate as to the explanatory weight that each should be afforded; Weiss and Carayannis (2001) identify a spectrum of opinions, with ‘institutionalist' approaches that embed ideas within institutionalist frameworks at one end, and ‘constructivist' approaches which argue that ideational concepts should be dis‐embedded from institutional considerations at the other. Drawing on 43 interviews with senior World Bank staff and a documentary analysis, this paper traces two policy agendas – social protection and fragile states – to identify the institutional and ideational features of the World Bank that a developmental agenda must navigate to achieve prominence in the Bank's work. It finds that the success of a policy agenda is determined by whether the ideas fit with a macro‐ideational dominant paradigm, and identifies several institutional features such as the incentive structure and lending mechanisms that influence an agenda's success.
Measuring News in Management Range Forecasts
Authors: Jensen Tyler K. , Plumlee Marlene A. 
Published: October 2019

ABSTRACTManagement earnings forecasts expressed as a range have become the most common form of quantitative management guidance. Traditionally, the proxy for the sign and the magnitude of the information conveyed by these forecasts—the forecast news—is calculated as the difference between a pre‐forecast earnings expectation and the midpoint of the forecasted range. We provide strong evidence that this traditional measure understates the amount of information conveyed by range forecasts. More importantly, we demonstrate that information conveyed by the upper and lower bounds of the forecasts can be used to improve the classification of forecasts as conveying good or bad news and for calculating the magnitude of that news. We rely on these findings to suggest alternative methods of classifying management range forecasts as conveying good versus bad news and to refine the calculation of forecast news to include the broader information set. Our analysis also suggests that the information conveyed by the range when the forecasts are bundled (issued concurrent with an earnings announcement) is significantly different than when forecasts are not bundled. Overall, our study documents the importance of incorporating range‐related information when assessing the sign and the magnitude of the information conveyed by management range forecasts.
ReClustOR: a re‐clustering tool using an open‐reference method that improves operational taxonomic unit definition
Authors: Terrat Sébastien , Djemiel Christophe , Journay Corentin , Karimi Battle , Dequiedt Samuel , Horrigue Walid , Maron Pierre‐Alain , Chemidlin Prévost‐Bouré Nicolas , Ranjard Lionel 
Published: October 2019

Abstract

Environmental microbial communities are now widely studied using metabarcoding approaches, thanks to the democratization of high‐throughput DNA sequencing technologies. The massive number of reads produced with these technologies requires bioinformatic solutions to be treated. A key step in the analysis is to cluster reads into Operational Taxonomic Units (or OTUs) and thus reduce the amount of data for downstream analyses. Due to the important impact of the clustering method on the quantity and quality of OTUs, finding an equilibrium between the reliability and time‐consuming nature of the chosen strategy is a real challenge. The present article proposes a new post‐clustering tool called ReClustOR aimed at improving the stability and reliability of OTUs whatever the initial clustering method.

We compared several clustering methods: a homemade de novo method, VSEARCH, Swarm and ReClustOR associated with these three clustering methods, and the ESV definition, using two datasets (a simulated one and an environmental one). All methods were analysed for their ability to efficiently describe microbial diversity in terms of alpha‐diversity, beta‐diversity and phylogeny.

Dataset analysis showed that post‐clustering with ReClustOR improved OTU detection not only in terms of diversity, but also in terms of reliability and stability as compared to the initial clustering methods. More precisely, the post‐clustering step improved the congruence of the results (alpha‐diversity, beta‐diversity, composition) whatever the initial clustering method. Moreover, ReClustOR, by defining a database of centroids, precludes the need to re‐cluster all the reads each time when new reads are generated.

ReClustOR is a new post‐clustering method that overcomes problems (OTU stability and reliability) associated with classical clustering methods and thereby increases the quality and the congruence of the reconstructed OTUs. Moreover, the OTU database defined with ReClustOR can be used as a reference gradually enriched by merging new studies and samples. In this way, huge datasets (e.g. the Earth Microbiome Project or the Tara Oceans project) can be used as references for other projects within their range of application, and increase the quality of comparisons among studies and datasets.
Halitosis: prevalence, risk factors, sources, measurement and treatment – a review of the literature
Authors: Wu J , Cannon RD , Ji P , Farella M , Mei L 
Published: October 2019

AbstractHalitosis, an offensive breath odour, has multiple sources and negative impacts on people’s social interactions and quality of life. It is important for health care professionals, including general physicians and dental professionals, to understand its aetiology and risk factors in order to diagnose and treat patients appropriately. In this study, we have reviewed the current literature on halitosis regarding its prevalence, classification, risk factors, sources, measurement and treatment.