bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quality assurance for technological institutes in Mexico: competition and inequity
Authors: Didou Aupetit Sylvie 
Published: May 2022

Purpose
This study aims to analyze the external quality assurance (EQA) strategies of Technological Institutes (TIs) in Mexico, between 2010 and 2020. For this purpose, this study tracks sectoral reforms and institutional adaptation processes toward fulfilling accreditation indicators. This study considers accreditation as an emergent strategy for the governance and quality improvement of the subsystem, historically oriented towards contributing to social equity and national development projects. This study also examines the links between evaluation, quality assurance and the restructuring of public, technological higher education.

Design/methodology/approach
This study performs a state-of-the-art and exploratory study. This study explores the relationship between quality assurance, non-traditional institutions and regulation in Mexico. This study covers an issue that has been absent from research into the technological sector, particularly research into autonomy and leadership within its institutions. This study obtains qualitative information on those issues through interviews and two focus groups.

Findings
Mechanisms such as regulatory schemes for the internal reform of TIs and sub-systemic prominence within the overall educational system show limitations owing to the inadequacy of accreditation indicators in accounting for the conditions in which TIs operate. To address this shortcoming and to aid TIs in accreditation endeavors, this study analyzes some features of this adaptive process that enable successful (student profiles, competitive admission criteria, teacher recruitment).

Research limitations/implications
The main limitation is that this paper reviews a sole country and presents just one case study. Other research on other higher education sub-systems can complete the analysis. In sum, there has been a lack of analysis of accreditation topics in Mexico, in the nontraditional institutions.

Practical implications
This study provides a diagnosis of barriers to the participation of TIs in rankings and accreditation mechanisms, and their repercussions on management issues, governance patterns and reforms.

Social implications
This study outlined some internal obstacles linked with centralized model of conduction (data for monitoring, consensus on priorities, capabilities and financing) and external factors (shortages of assurance quality framing and institutional profiles, satisfaction with the process).

Originality/value
This study explores relationships between quality assurance, non-traditional institutions and regulation in Mexico, attending a lacking point in the research on the technological sector and autonomy/leadership of its institutions.
Quality assurance and new public management: transformations in organizational structures, functions and roles in Argentine universities
Authors: Marquina Monica , Gimenez Graciela , Rodríguez Wenceslao , Mazzeo Ignacio 
Published: May 2022

Purpose
The purpose of this paper is to study how quality assurance (QA) has impacted Argentina’s higher education system, how QA tasks are reflected on the organizational structure of institutions, which kind of professional profiles the new QA staff assume and to what extent university life is reconfigured from these changes.

Design/methodology/approach
The authors draw on data from three work fields: collection and analysis of institutional data; survey applied to a stratified sample of staff who perform QA functions; and in-depth interviews with institutional QA professionals. Results show that universities have created specific areas and developed new functions and roles in QA.

Findings
The authors have observed a growing presence of dedicated personnel trained in developing these functions, positioned further down a path that had formerly distanced academics from administrative and institutional decision-makers. Unlike European universities, no evident tension was found between traditional sectors and the new professionals.

Research limitations/implications
The limited number of responses of the quantitative data collection technique (survey) only allowed for a general and descriptive analysis. This limitation is compensated with two other methodological processes (documental analysis and in-depth interviews), that allowed to incorporate “type of university” as a variable analyse the data obtained.

Practical implications
Results can be useful for public policy to move toward new forms of monitoring internal institutional QA systems.

Originality/value
The research that supports this article aims at constructing our own categories to understand the same object that has been studied in developed countries, but in the Argentine-specific context.
Scheme of long distance power supply for electrified railway traction network based on traction cable
Authors: Wang Hui , Li Qunzhan , Liu Wei , Wang Chuang , Liu Tongtong 
Published: May 2022

PurposeThe traction cable is paralleled with the existing traction network of electrified railway through transverse connecting line to form the scheme of long distance power supply for the traction network. This paper aims to study the scheme composition and power supply distance (PSD) of the scheme.Design/methodology/approachBased on the structure of parallel traction network (referred to as “cable traction network (CTN)”), the power supply modes (PSMs) are divided into cable + direct PSM and cable + autotransformer (AT) PSM (including Japanese mode, French mode and new mode). Taking cable + Japanese AT PSM as an example, the scheme of long distance power supply for CTN under the PSMs of co-phase and out-of-phase power supply are designed. On the basis of establishing the equivalent circuit model and the chain circuit model of CTN, taking the train working voltage as the constraint condition, and based on the power flow calculation of multiple train loads, the calculation formula and process for determining the PSD of CTN are given. The impedance and PSD of CTN under the cable + AT PSM are simulated and analyzed, and a certain line is taken as an example to compare the scheme design.FindingsResults show that the equivalent impedance of CTN under the cable + AT PSM is smaller, and the PSD is about 2.5 times of that under the AT PSM, which can effectively increase the PSD and the flexibility of external power supply location.Originality/valueThe research content can effectively improve the PSD of traction power supply system and has important reference value for the engineering application of the scheme.
Attitune music: the econometrics of jazz
Authors: Soon Jan-Jan 
Published: May 2022

Theoretical basis
This study aims to use a variant from the family of discrete choice models, i.e. the logit model, to analyse the relationship between the Y dependent and X explanatory variables. This model addresses the linear probability model's main drawback by constraining the probabilities of the Y outcome between 0 and 1. The logit model also offers an extra advantage, in that it can provide odd ratio estimations.

Research methodology
This is a compact case written specifically to teach statistics, econometrics and research method. It has an accompanying data set for the case-users to do hands-on statistical analyses. The data set has been collected from a questionnaire survey from the students enrolled in Attitune, i.e. the music school that the case protagonist founded.

Case overview/synopsis
The case revolves around a relatively new music school, Attitune Music, established in July 2017 in the heart of the capital city of a northern state in Malaysia. Michael Lee Wei-Pin was the founder of Attitune Music Sdn. Bhd. He was also one of the four music instructors of Attitune Music. His speciality instruments were the guitar and the piano. The case opens with the case protagonist, Michael, pondering over Attitune’s performance in terms of its music students’ enrolment. Attitune faced a major challenge – its student enrolment had remained more or less constant since its establishment. Low and/or constant number of students could ultimately translate into stagnant or even worse, shrinking revenues for Attitune. To attract more students, Michael had been toying with the idea of injecting new elements into Attitune’s music lessons, something different from what other music schools were offering and that could be unique selling points for Attitune. With this in mind, Michael surveyed Attitune’s students to gather information that could help him gauge the potential and feasibility of his idea.

Complexity academic level
This case is well positioned to be perhaps the pioneer Malaysian teaching case to be written to teach courses in statistics, econometrics and research methods. The case can be easily adapted to teach at either the introductory or at an advanced level.
Value co-destruction and negative e-WOM behavior: the mediating role of tourist citizenship
Authors: Arıca Resat , Polat Inci , Cobanoglu Cihan , Çorbacı Abdülkadir , Chen Po-Ju , Hsu Meng-Jun 
Published: May 2022

PurposeThe purpose of the study is to examine the effect of value co-destruction on customer citizenship and negative electronic word of mouth (e-WOM) behaviors. In addition, the study aims to determine the mediating role of tourist citizenship between value co-destruction and negative e-WOM behaviors.Design/methodology/approachBy using a convenience sampling method, data were collected from 704 customers, who purchased their touristic products through co-creation. The exploratory and confirmatory factor analyses were applied to the data obtained to determine the factors that make up the dimensions in the research model. The partial least squares-structural equation modeling (PLS-SEM) was used to evaluate the relationship in the research model proposed in the study.FindingsThe results of the study indicated that value co-destruction had an effect on customer citizenship behavior and negative e-WOM. While the helping behavior of customer citizenship had an effect on negative e-WOM, the advocacy behavior of customer citizenship had no effect on negative e-WOM. However, this study found only an indirect mediation effect of helping behavior in the relationship between value co-destruction and negative e-WOM.Research limitations/implicationsThe research examined the antecedent behaviors that cause value co-destruction and the effects of these behaviors on the outcomes of the holiday experience. This information then was combined in a model and evaluated in a holistic framework. Theoretically, the research helps us understand the impact of value co-destruction behavior on citizenship behavior and on tourists’ negative e-WOM tendency. The research examines value co-destruction behavior and its effect on holiday-experience outcomes simultaneously.Practical implicationsThe research provides a framework that tourism enterprises can use to produce and offer value-attributing services for their customers and to manage dysfunctional and disruptive business processes and behaviors to reduce value co-destruction. The research also provides a new way for practitioners in the tourism sector to understand and generalize the behavioral changes of tourists caused by value co-destruction during and after their experience.Originality/valueThe paper contributes to an understanding of value co-destruction antecedents and outputs from the customer perspective. Further, the research provides information to tourism businesses to effectively and efficiently manage the value co-creation process and prevent value co-destruction. The findings of the study will provide useful suggestions that will contribute to researchers and sectoral representatives.
Cutaneous manifestations of coronavirus disease 2019 patients in Japan
Authors: Tamai Masakazu , Sakamoto Rika , Goto Noriko , Morimura Osamu , Nishida Tsutomu , Iwahashi Hiromi , Yokomi Akinori 
Published: May 2022

AbstractSome patients with coronavirus disease 2019 (COVID‐19) develop skin manifestations. There may be regional and racial differences in the frequency and type of COVID‐19‐associated skin manifestations. There are, however, few reports on skin manifestations in COVID‐19 patients in Asia, including Japan. We retrospectively investigated the frequency, type, and clinical course of skin manifestations in Japanese patients with COVID‐19. From 22 February 2020 to 16 August 2021, 738 Japanese patients (median age 59 years, 55% male) with laboratory‐confirmed COVID‐19 on polymerase chain reaction or antigen tests were admitted to our hospital. We mainly admitted patients with mild to moderate severity who had symptoms such as cough, fever, and oxygen demand but did not require mechanical ventilation. A total of 2.8% (21/738) of the COVID‐19 patients treated at our hospital were diagnosed with viral eruptions caused by COVID‐19. Of the 21 patients, 19 developed erythematous papules, and two developed urticaria. There were no cases of pernio‐like lesions, known as COVID toes. The median duration from the onset of other COVID‐19 symptoms to the development of skin manifestations was 9 days. This study revealed that approximately 2–3% of Japanese patients with COVID‐19 developed COVID‐19‐associated viral eruptions, most of which were erythematous papules.
Do State Bans of Most‐Favored‐Nation Contract Clauses Restrain Price Growth? Evidence From Hospital Prices
Authors: ARNOLD DANIEL R. , GUDIKSEN KATHERINE L. , KING JAIME S. , FULTON BRENT D. , SCHEFFLER RICHARD M. 
Published: May 2022

Policy Points
Looking for a way to curtail market power abuses in health care and rein in prices, 20 states have restricted most‐favored‐nation (MFN) clauses in some health care contracts.
Little is known as to whether restrictions on MFN clauses slow health care price growth.
Banning MFN clauses between insurers and hospitals in highly concentrated insurer markets seems to improve competition and lead to lower hospital prices.
ContextMost‐favored‐nation (MFN) contract clauses have recently garnered attention from both Congress and state legislatures looking for ways to curtail market power abuses in health care and rein in prices. In health care, a typical MFN contract clause is stipulated by the insurer and requires a health care provider to grant the insurer the lowest (i.e., the most‐favored) price among the insurers it contracts with. As of August 2020, 20 states restrict the use of MFN clauses in health care contracts (19 states ban their use in at least some health care contracts), with 8 states prohibiting their use between 2010 and 2016.MethodsUsing event study and difference‐in‐differences research designs, we compared prices for a standardized hospital admission in states that banned MFN clauses between 2010 and 2016 with standardized hospital admission prices in states without MFN bans.FindingsOur results show that bans on MFN clauses reduced hospital price growth in metropolitan statistical areas (MSAs) with highly concentrated insurer markets. Specifically, we found that mean hospital prices in MSAs with highly concentrated insurer markets would have been $472 (2.8%) lower in 2016 had the MSAs been in states that banned MFN clauses in 2010. In 2016, the population in our sample that resided in MSAs with highly concentrated insurer markets was just under 75 million (23% of the US population). Hence, banning MFN clauses in all MSAs in our sample with highly concentrated insurer markets in 2010 would have generated savings on hospital expenditures in the range of $2.4 billion per year.ConclusionsOur empirical findings suggest banning MFN clauses between insurers and providers in highly concentrated insurer markets would improve competition and lead to lower prices and expenditures.
Host–guest inclusion complexes of hydroxytyrosol with cyclodextrins: Development of a potential functional ingredient for food application
Authors: Stergiou Athena , Binou Panagiota , Igoumenidis Panagiotis E. , Chiou Antonia , Yannakopoulou Konstantina , Karathanos Vaios Τ. 
Published: May 2022

AbstractHydroxytyrosol (HT), a potent phenolic phytochemical, exerts positive health effects due to its antioxidant properties. However, it is highly reactive to oxygen, light, and heat and presents high instability. Alpha‐ and beta‐cyclodextrin (α‐CD, β‐CD) have structures that allow them to encapsulate a variety of hydrophobic molecules. The aim of this study was to examine the outcomes of the inclusion of HT into α‐CD and β‐CD. Aqueous solutions of HT and either α‐CD or β‐CD were prepared and freeze‐drying was applied for the encapsulation, in 1:1 and 2:1 molar ratios. The produced solid complexes were studied and characterized using NMR spectroscopy, differential scanning calorimetry (DSC) and attenuated total reflection‐Fourier transform infrared spectroscopy (ATR‐FTIR). Encapsulation efficiency (EE%), stability, and in vitro release of the encapsulated complexes under simulated digestion conditions were also evaluated. In both DSC thermograms and FTIR spectra of the inclusion complexes, absence of the characteristic peaks of HT and shifts of the CDs peaks were observed, showing an interaction between the molecules. NMR suggested a stronger complex formed between β‐CD and HT. The EE% of β‐CD/HT (1:1 and 2:1) complexes and α‐CD/HT (1:1) complex was found to be higher (83%, 76%, 78%, respectively), compared to α‐CD/HT (2:1) (51%). Data obtained support the encapsulation of HT in both CDs, revealing a potential interaction between them and an improvement in HT's thermal stability. Regarding the in vitro release study, both CD complexes had similar behavior and a controlled release of HT in the intestinal site was observed.Practical ApplicationThe encapsulation of hydroxytyrosol in cyclodextrins resulted in white amorphous food‐grade powders with no aroma and taste. Incorporation of these powders in foods could lead to an increase in their antioxidant content and offer an additional nutritional value.
Progressive multifocal leukoencephalopathy in a patient with systemic lupus erythematosus and autoimmune hepatitis
Authors: Gomathy Saranya , Panigrahi Baikuntha , Tirlangi Praveen Kumar , Wig Naveet , Brijwal Megha , Sharma Mehar C. , Garg Ajay , Tripathi Manjari , Mohta Srikant , Doddamani Ramesh , Vibha Deepti , Singh Rajesh Kumar , Yadav Rajni , Sahu Saumya , Suri Vaishali , Kaur Kavneet , Tripathi Madhavi , Rohatgi Anshu , Elavarasi Arunmozhimaran 
Published: May 2022

AbstractProgressive multifocal leukoencephalopathy (PML) is a rare demyelinating central nervous system illness encountered in the setting of immunosuppressive conditions like human immunodeficiency virus / acquired immunodeficiency syndrome, autoimmune diseases and hematologic malignancies. We had a 54‐year‐old woman with systemic lupus erythematosus and coexisting autoimmune hepatitis who presented with progressive cognitive decline, right hemiparesis and ataxia who was found to have PML. She had severe CD4 lymphopenia. She was managed with low‐dose prednisolone and plasma exchange after which she showed significant clinical improvement. This case highlights the diagnostic and therapeutic challenges encountered in managing a case of PML in the setting of autoimmune conditions with profound lymphopenia.
Number of sexual partners and serum testosterone levels in a population‐based sample of unpartnered heterosexual men
Authors: Bozick Robert 
Published: May 2022

AbstractBackgroundThe relationship between men's testosterone levels and their sexual behaviors is unclear as existing studies find mixed results.ObjectivesThe key objective of this study is to assess whether men's testosterone levels are affected by sexual behaviors and to explore whether this relationship varies by age. Specifically, this study addresses the question: Are men's testosterone levels affected by the number of sexual partners they accrue?MethodsThis analysis was based on a nationally representative sample of 977 unpartnered heterosexual men between the ages of 20 and 65 in the United States. Serum testosterone levels were measured from blood samples using isotope dilution liquid chromatography tandem mass spectrometry and the number of sexual partners in the past 12 months was ascertained from an audio computer‐assisted personal self‐interview. Using ordinary least squares regression, serum testosterone levels were predicted as a function of the number of sexual partners that men reported, sociodemographic characteristics, and factors known to affect endocrine regulation. An interaction term between the number of sexual partners in the past 12 months and age was included.ResultsThe correlation between the number of sexual partners in the past 12 months and testosterone levels is contingent upon age: The relationship is positive for younger men but negative for older men. Among 20‐year‐old unpartnered heterosexual men, an additional sexual partner in the past 12 months is associated with an increase of 5.55 ng/dl of testosterone (95% confidence interval (CI): 2.92, 8.19). This initial positive effect at age 20 is reduced by 0.25 ng/dl of testosterone (95% CI: −0.44, −0.06) with each year that men age.ConclusionTestosterone levels in men are related to reproductive behaviors, but the direction of this relationship changes as men age.
Too much of a good thing? Curvilinear effect of instrumental social support on task performance via work engagement
Authors: Yun Mansik , Beehr Terry 
Published: May 2022

AbstractBased on the Threat‐to‐Self‐Esteem (TSE) model integrated with the Conservation of Resources (COR) theory, we proposed an inverted U‐shaped curvilinear relationship between receiving instrumental social support and task performance, mediated by work engagement. Further, grounded on the TSE model, we proposed the provision of instrumental social support neutralises the curvilinear association between receiving instrumental social support and work engagement. We examined these hypotheses using two samples of South Korean employees. In Study 1, we collected three‐wave data (N = 302) from employees in a manufacturing company and found curvilinear associations between receiving instrumental social support and work outcomes (i.e. work engagement and task performance), supporting the Too‐Much‐of‐a‐Good‐Thing (TMGT) effects. However, we did not find support for the moderating (neutralising) effects. In Study 2, we replicated the model that was supported in Study 1 (curvilinear model), using a different sample and two‐wave daily diary method (N = 530, construction employees). Overall, based on the TSE model, the COR theory, and TMGT principles, in two settings and with different methods, we found support for curvilinear associations between receiving instrumental social support and work outcomes and an indirect curvilinear effect of receiving instrumental social support on task performance via work engagement.
Commentary on the identity and supererogatory actions of companies
Authors: Zsolnai Laszlo 
Published: May 2022

AbstractThis paper argues that identity economics and social psychology provide a useful frame of reference to interpret supererogatory actions and suggests that identity of companies can be a driving force behind these actions. Companies may perform actions against the narrow sense of economic rationality if those actions serve purposes of high importance for them. The climate crisis and the more recent COVID‐19 crisis call for supererogatory actions by companies more than ever before.