bluuebunny/crossref_metadata_2025_split huggingface dataset:
Exploring entrepreneurs' business-related social media typologies: a latent class analysis approach
Authors: McLaughlin Christopher , Bradley-McCauley Laura , Stephens Simon 
Published: March 2022

PurposeThis paper aims to present typologies of entrepreneurs using entrepreneurs' engagement and use of social media (SM) for business purposes as a means of categorisation. Based on this categorisation, four types of entrepreneurs are proposed: the hopefuls, the assureds, the opportunists and the passengers. The emergent typology should serve as the basis for further thought and empiricism.Design/methodology/approachA two-phase quantitative opportunistic sampling approach was employed. First, entrepreneurial experts' (n = 8) structured interviews informed the survey design. Secondly, an online survey, based on theory of planned behaviour (TPB), was completed with entrepreneurs at business incubation centres (BICs) in Ireland. Latent class analysis (LCA) identified a number of entrepreneur typologies using participants' (n = 124) business-related SM activities. Differences in entrepreneurial types were explained using the TPB, trust, security and demographic variables.FindingsResults indicate that there are four distinct types of entrepreneurs based on their business-related SM activities. Once the typology was created, comparisons were conducted between each type based on the psychological drivers of the TPB. Trend differences were identified between the distinct typologies.Originality/valueThe value of this research is that the research proposes a typology of entrepreneurs categorised based on SM engagement and use. The typology can be used to identify and compare the differences between entrepreneurs based on perceptions regarding SM, abilities related to SM and the support entrepreneurs need in relation to this. This research is novel in that the research addresses calls to segment the increasingly diverse and complex entrepreneurial population using the pillars of social and digital technology as a focus. The research also provides a framework for examination and replication in other geographic and entrepreneurial settings.
Federated data as a commons: a third way to subject-centric and collective-centric approaches to data epistemology and politics
Authors: Calzati Stefano 
Published: March 2022

Purpose
This study advances a reconceptualization of data and information which overcomes normative understandings often contained in data policies at national and international levels. This study aims to propose a conceptual framework that moves beyond subject- and collective-centric normative understandings.

Design/methodology/approach
To do so, this study discusses the European Union (EU) and China’s approaches to data-driven technologies highlighting their similarities and differences when it comes to the vision underpinning how tech innovation is shaped.

Findings
Regardless of the different attention to the subject (the EU) and the collective (China), the normative understandings of technology by both actors remain trapped into a positivist approach that overlooks all that is not and cannot be turned into data, thus hindering the elaboration of a more holistic ecological thinking merging humans and technologies.

Originality/value
Revising the philosophical and political debate on data and data-driven technologies, a third way is elaborated, i.e. federated data as commons. This third way puts the subject as part by default of a collective at the centre of discussion. This framing can serve as the basis for elaborating sociotechnical alternatives when it comes to define and regulate the mash-up of humans and technology.
Mediation analysis of students' perceived benefits in predicting their satisfaction to technology-enhanced learning
Authors: Dubey Pushkar , Sahu Kailash Kumar 
Published: March 2022

PurposeStudents' perception towards learning technologies in the disruptive times like coronavirus disease (2019) COVID-19 is what the educational institutes are striving to know so that the educational institutes could provide the best learning experiences to students. The present study attempts to identify the technology-enhanced learning (TEL) factors (i.e. informational quality, compatibility, resource availability, self-efficacy, subjective norms, subject interest and informational quality) with the mediation effect of perceived benefits on student satisfaction to TEL amongst non-technical students of different college/universities at Chhattisgarh state.Design/methodology/approachPurposive sampling technique with “criterion variable” was applied to collect responses from 600 participants. Students, who are enrolled in non-technical courses at different colleges/universities, were participated in the present study. The data collection process was completed during April–November 2019.FindingsThe results revealed that perceived benefits to TEL were significantly and positively mediated between all the TEL factors (i.e. information quality, compatibility, resource availability, self-efficacy, subjective norms, subject interest and institutional branding) and student satisfaction to TEL.Originality/valueThe present study itself is a novel study by taking TEL factors such as informational quality, compatibility, resource availability, self-efficacy, subjective norms, subject interest and institutional branding by considering perceived benefits as mediator to examine the influence on student satisfaction to TEL.
Wavefield simulation of fractured porous media and propagation characteristics analysis
Authors: Wang Kang , Peng Suping , Lu Yongxu , Cui Xiaoqin 
Published: March 2022

ABSTRACTMost fractured reservoirs are two‐phase media, that is, mixture of solid matrix and void. It contains rock skeleton and fractures or pores filled with oil, gas and water. These fractures are the channels of oil and gas storage and migration. In two‐phase media, the interaction between the fluid and solid phases will further complicate the seismic wave propagation. Natural fractures are typically irregular in shape, thereby causing difficulties in the exploration of fractured reservoirs. Therefore, the key to the prediction of fractures is to study the equation of motion of seismic waves and energy distribution of seismic waves at the fracture interface. To derive the propagation law for complex irregular shape fractures in two‐phase media, we combined the stiffness matrix of the media with linear slip theory and derived a numerical simulation scheme. The simulation scheme considers the fractures in the two‐phase media to be in any direction. In addition, seismic wave energy distribution at the fracture interface was obtained. The linear slip boundary condition was introduced into the conventional Zoeppritz equation, and a modified Zoeppritz equation was proposed for two‐phase fractured media. The reflection and transmission due to the fracture interface were considered in the new equation, thereby making the equation more flexible. Using the new numerical simulation scheme, we analysed the elastic waves produced by the linear slip fracture interface in two‐phase media and provided the long‐term stability results of the new scheme. Moreover, we provided the relationship between the reflection and transmission coefficients of the linear slip fracture interface and the incident angle and compliance in two‐phase media using the new Zoeppritz equation. The results show that the reflection wave of two‐phase fractured media can be divided into wave impedance and fracture parts to accurately describe the properties of underground rocks.
Understanding the Impact of Mandatory CSR Disclosure on Green Innovation: Evidence from Chinese Listed Firms
Authors: Ren Shenggang , Huang Min , Liu Donghua , Yan Ji 
Published: March 2022

AbstractDrawing on the institutional view of legitimacy theory, we examine whether and under which conditions a policy tool, mandatory corporate social responsibility (CSR) reporting, enforced by constituents positively triggers firms to make substantive environmental responses. Using China's 2008 CSR reporting policy as a quasi‐natural experiment and the difference‐in‐differences estimation approach, the results reveal that after implementation of this policy, mandatory CSR reporting firms show substantially higher green innovation performance than non‐CSR reporting firms. We further find that this effect is stronger for firms located in areas with high environmental enforcement intensity, for state‐owned enterprises and for those with higher levels of media coverage. Moreover, we make a nuanced investigation on whether the media coverage is laden with a negative or positive tone, and find that both negative and positive coverage strengthen the relationship between mandatory CSR disclosure and green innovation.
Everyday attentiveness: understanding diabetes in Vietnam through literary displacement
Authors: Gammeltoft Tine M. 
Published: March 2022

AbstractWorld‐wide, diabetes is taking on epidemic proportions. This is a debilitating disease that damages and destroys bodily systems unless blood sugar levels are kept close to normal, and patients are therefore urged to practise attentive self‐management. Among people with type II diabetes in Vietnam, such everyday attentiveness seems to far exceed clinical recommendations, suffusing daily lives in pervasive and yet elusive ways. Drawing on ethnographic fieldwork conducted in northern Vietnam, this article aims to depict the lifeworlds in which diabetes attentiveness unfolds. Seeking to capture the inchoate ways in which diabetes alters everyday lives, the article develops literary displacement as an experimental mode of writing‐cum‐inquiry that combines standard ethnography with ethnographic fiction. Taking diabetes in Vietnam as its case, the article shows how literary displacement can contribute to cultivating ethnographic as well as analytical sensibilities, strengthening the capacity of anthropology to capture subtle and subdued layers of life.
What is Critical About Critical Urban Anthropology?
Authors: Scheld Suzanne 
Published: March 2022

AbstractIn 2021, the Society for Urban, National, Transnational/Global Anthropology (SUNTA), a section of the American Anthropological Association, changed its name to Critical Urban Anthropology Association (CUAA). This essay addresses the question “What is Critical About Critical Urban Anthropology?” by reflecting on problematic assumptions about African cities that are perpetuated over time and the need to critique these ideas. I suggest a more active and participatory approach to pedagogy is necessary to creating a critical urban anthropology that can help to challenge these assumptions.
Two‐year outcomes of low‐exposure extended‐release tacrolimus and mycophenolate mofetil regimen in de novo kidney transplantation: A multi‐center randomized controlled trial
Authors: Hidaka Yuji , Goto Norihiko , Yamanaga Shigeyoshi , Kinoshita Kohei , Tanaka Kosuke , Kawabata Chiaki , Toyoda Mariko , Tomosugi Toshihide , Futamura Kenta , Okada Manabu , Tsujita Makoto , Hiramitsu Takahisa , Yokomizo Hiroshi , Miyata Akira , Narumi Shunji , Kobayashi Takaaki , Watarai Yoshihiko 
Published: March 2022

AbstractBackgroundOnce‐daily extended‐release tacrolimus (TACER) is commonly administered following kidney transplantation (KTx); however, its optimal dosage remains unknown.MethodsIn this multi‐center, randomized controlled trial, 62 living donor KTx recipients were assigned to either standard‐exposure (SE; n = 32) or low‐exposure (LE; n = 30) TACER (Graceptor®, Astellas Pharm Inc.) groups. All patients received basiliximab and mycophenolate mofetil (MMF). The primary outcomes were acute rejection, graft/patient survival, and the secondary outcomes were incidence of cytomegalovirus infection, and de novo donor‐specific antibodies (dnDSA) production.ResultsThe tacrolimus trough level and estimated area under the blood concentration–time curve (eAUC) were significantly higher in SE than in LE (SE vs. LE; 1 year: 5.0 ± 0.9 ng/ml and 206.9 ± 26.8 ng h/ml vs. 3.4 ± 1.0 ng/ml and 153.9 ± 26.4 ng h/ml; 2 years: 4.8 ± 1.0 ng/ml and 204.9 ± 30.1 ng h/ml vs. 3.8 ± 0.9 ng/ml and 164.4 ± 27.0 ng h/ml). In contrast, the dosage and eAUC of MMF did not differ between groups. Two‐year graft and patient survival rates were 100% in both groups, and acute rejection rates were 0% and 10% in the SE and LE, respectively (p = 0.11). The mean estimated glomerular filtration rates did not differ between the groups. Cytomegalovirus infection was slightly lower in the LE (SE: 12.5% and LE: 6.7%, p = 0.37). In the LE, four cases of dnDSA were noted within 2 years of transplantation; no case was observed in the SE (p = 0.034).ConclusionsAlthough the LE TACER regimen showed similar rates of acute rejection, as well as graft and patient survival compared with SE after KTx, LE was significantly more associated with dnDSA. Further investigation of its long‐term effect on graft survival is warranted. (University Hospital Medical Information Network Clinical Trials Registry ID: UMIN000033089).
Acute care and secondary prevention of stroke with newly detected versus known atrial fibrillation
Authors: Wang Ruihao , Macha Kosmas , Haupenthal David , Gaßmann Luise , Siedler Gabriela , Stoll Svenja , Fröhlich Kilian , Koehn Julia , Schwab Stefan , Kallmünzer Bernd 
Published: March 2022

AbstractBackground and purposeAtrial fibrillation (AF) in stroke patients can be classified as either “known AF” (KAF), defined as AF confirmed before stroke onset, or “AF detected after stroke” (AFDAS), defined as AF diagnosed after stroke onset. While KAF is considered primarily cardiogenic, AFDAS includes patients with stroke‐triggered neurogenic arrhythmias. This study aimed to investigate the clinical course of stroke, functional outcomes and the value of oral anticoagulation (OAC) for secondary prevention according to AF subtype.MethodsAcute ischemic stroke patients were consecutively enrolled and AF was classified as AFDAS or KAF. Stroke severity was assessed using the National Institutes of Health Stroke Scale (NIHSS) and 3‐month functional outcomes were measured on the modified Rankin scale. Inverse probability weighting was applied to adjust for baseline confounders in patients with AFDAS and KAF. Multivariate logistic regression models were calculated to investigate the value of OAC for secondary prevention.ResultsA total of 822 stroke patients with AF were included, of whom 234 patients (28.5%) had AFDAS. AFDAS patients had a lower prevalence of coronary artery disease, heart failure, and sustained AF, but higher rates of large vessel occlusion compared to KAF patients. NIHSS scores were lower in patients on pre‐stroke anticoagulation. OAC for secondary prevention was associated with favorable 3‐month functional outcome (odds ratio 7.60, 95% confidence interval 3.42–16.88) independently of AF subtype. The rate of stroke recurrence did not differ significantly.ConclusionsClinical characteristics suggest that AFDAS might comprise a distinct pathophysiological and clinical entity among stroke patients with AF. The benefit of anticoagulation for secondary prevention was not affected by AF subtype.
Second‐language writing in university‐level basic language programs: A survey of student and instructor beliefs
Authors: Issa Bernard I. , Koronkiewicz Bryan , Faretta‐Stutenberg Mandy 
Published: March 2022

AbstractThe majority of US university students studying foreign languages are enrolled in introductory courses that are typically part of a coordinated curriculum. Such courses conventionally include the assessment of second language (L2) writing skills. However, given that these assessments can be broadly conceived and vary by program, their design and implementation are subject to differing opinions and beliefs from the stakeholders involved. In an effort to better understand how their views of L2 writing assessments overlap and/or diverge, the present study examined instructor (N = 28) and student (N = 183) beliefs in Spanish language programs at three public US universities using an online Likert‐scale and ranked‐choice questionnaire. Results revealed that although there was misalignment regarding the pedagogical purpose of such assignments, in general there was broad agreement among the two groups, including the use of a writing‐to‐learn approach to develop both specific and broad linguistic skills.
The gut bacterial microbiome of the Threeridge mussel, Amblema plicata, varies between rivers but shows a consistent core community
Authors: Lawson Lauren A. , Atkinson Carla L. , Jackson Colin R. 
Published: March 2022

Abstract

Freshwater mussels are important for nutrient cycling and ecosystem health as they filter feed on their surrounding water. This filter feeding makes these bivalves especially sensitive to conditions in their environment. Gut microbial communities (microbiomes) have been recognised as important to both host organism and ecosystem health; however, how freshwater mussel microbiomes are organised and influenced is unclear.

In this study, the gut bacterial microbiome of Threeridge mussel, Amblema plicata, was compared across two river basins, five rivers, and nine local sites in the south‐eastern U.S.A. Mussel gut tissue was dissected, DNA extracted, and the microbiome characterised by high throughput sequencing of the V4 region of the 16S ribosomal RNA gene.

Planctomycetes, Firmicutes, and Cyanobacteria were the most common bacterial phyla within the guts of all sampled A. plicata. However, the relative abundances of these major bacterial phyla differed between mussels sampled from different rivers and river basins, as did the relative abundance of specific bacterial operational taxonomic units (OTUs). Despite these differences, a core microbiome was identified across all mussels, with eight OTUs being consistent members of the A. plicata microbiome at all sites, the most abundant OTU identifying as a member of the family Planctomycetaceae. Geographic distance between sites was not correlated with similarity in the structure of the gut microbiome, which was more related to site physicochemistry.

Overall, these results suggest that while physicochemical conditions affect the composition of transient bacteria in the Threeridge mussel gut microbiome, the core microbiome is largely unaffected, and a portion of the A. plicata microbiome is retained regardless of the river system.

How long transient bacteria remain in the gut, and to what extent these transient microbes aid in host function is still unknown. Core microbiota have been found to aid in multiple functions within animal hosts, and within freshwater mussels this core microbiome may aid in nutrient processing and cycling. Therefore, it is important to look at both transient and core microbes when studying the structure of freshwater invertebrate microbiomes.
Revisiting the cumulative effects of drought on global gross primary productivity based on new long‐term series data (1982–2018)
Authors: Zhang Zhenyu , Ju Weimin , Zhou Yanlian , Li Xiaoyu 
Published: March 2022

AbstractDrought has broad and deep impacts on vegetation. Studies on the effects of drought on vegetation have been conducted over years. Recently, the cumulative effect of drought is recognized as another key factor affecting plant growth. However, global‐scale studies on this phenomenon are still lacking. Thus, based on new satellite based gross primary productivity (GPP) and multi‐temporal scale Standardized Precipitation Evapotranspiration Index data sets, we explored the cumulative effect duration (CED) of drought on global vegetation GPP and analyzed its variability across elevations and climatic zones. The main findings were as follows: (1) The cumulative effect of drought on GPP was widespread, with an average CED of 4.89 months. (2) CED of drought on GPP varied among vegetation types. Specifically, grasslands showed the longest duration, with an average value of 5.28 months, followed by shrublands (5.09 months), wetlands (5.03 months), croplands (4.85 months), savannas (4.58 months), and forestlands (4.57 months). (3) CED of drought on GPP changes with climate conditions. It decreased with the decrease of precipitation in the driest month (Pdry) and mean annual precipitation in tropical and arid climate zones, respectively. In both temperate and cold climate zones, CED of drought on GPP was shorter in areas with dry winter than that in areas with dry summer. It increased with the decrease of mean annual air temperature in tropical climate zones and decreased with the increase of summer temperature in temperate and cold climatic zones. (4) With increasing elevation, CED of drought on GPP showed a pattern of increasing (0–3000 m), then decreasing (3000–5000 m), and increasing again (>5000 m). Our findings highlight the heterogeneity of CED of drought on GPP, owing to differences in vegetation types, long‐term hydrothermal conditions, elevation, etc. The results could deepen our understanding of the effects of drought on global vegetation.
Key environmental and production factors for understanding variation in switchgrass chemical attributes
Authors: Hoover Amber N. , Emerson Rachel , Cortez Marnie , Owens Vance , Wolfrum Ed , Payne Courtney , Fike John , Crawford Jamie , Crawford Ryan , Farris Rodney , Hansen Julie , Heaton Emily A. , Kumar Sandeep , Mayton Hilary , Wilson Danielle M. 
Published: March 2022

AbstractSwitchgrass (Panicum virgatum L.) is a promising feedstock for bioenergy and bioproducts; however, its inherent variability in chemical attributes creates challenges for uniform conversion efficiencies and product quality. It is necessary to understand the range of variation and factors (i.e., field management, environmental) influencing chemical attributes for process improvement and risk assessment. The objectives of this study were to (1) examine the impact of nitrogen fertilizer application rate, year, and location on switchgrass chemical attributes, (2) examine the relationships among chemical attributes, weather and soil data, and (3) develop models to predict chemical attributes using environmental factors. Switchgrass samples from a field study spanning four locations including upland cultivars, one location including a lowland cultivar, and between three and six harvest years were assessed for glucan, xylan, lignin, volatiles, carbon, nitrogen, and ash concentrations. Using variance estimation, location/cultivar, nitrogen application rate, and year explained 65%–96% of the variation for switchgrass chemical attributes. Location/cultivar × year interaction was a significant factor for all chemical attributes indicating environmental‐based influences. Nitrogen rate was less influential. Production variables and environmental conditions occurring during the switchgrass field trials were used to successfully predict chemical attributes using linear regression models. Upland switchgrass results highlight the complexity in plant responses to growing conditions because all production and environmental variables had strong relationships with one or more chemical attributes. Lowland switchgrass was limited to observations of year‐to‐year environmental variability and nitrogen application rate. All explanatory variable categories were important for lowland switchgrass models but stand age and precipitation relationships were particularly strong. The relationships found in this study can be used to understand spatial and temporal variation in switchgrass chemical attributes. The ability to predict chemical attributes critical for conversion processes in a geospatial/temporal manner would provide state‐of‐the‐art knowledge for risk assessment in the bioenergy and bioproducts industry.