bluuebunny/crossref_metadata_2025_split huggingface dataset:
Establishing Continuous App Improvement by Considering Heterogenous Data Sources
Authors: Scherr Simon André , Hupp Steffen , Elberzhager Frank 
Published: May 2021

<p class="0abstract"><span lang="EN-US">Mobile apps have penetrated the market and are being used every­where. Companies developing apps face increasing challenges such as short time to market or demand for high quality. Furthermore, the success of an app also depends on how users perceive its quality. Feedback provided by users influences other potential users and provides new opportunities for identifying features. Consequently, it is a valuable source of input for app developers with respect to product improvements. One form is textual feedback. This kind of feedback is usually distributed across various data sources. Therefore, it must be captured from these sources and put into one single pool of data before it can be analyzed. The analysis must take into account the peculiarities of the short release cycles and high change rate of features for mobile apps. In this article, we present User Echo Service (UES), which was built to address heterogeneous data sources. The aim of UES is to allow product managers to be able to be always up to date with the latest feedback data. Therefore, we have created an extensible architecture aimed at supporting different data sources and present the feedback collection scheduling system. This forms the prerequisite for subsequent analyses of the collected data. We discuss our solution and provide ideas for future development.</span></p>
Mobile Phones in Classrooms and in Professor-Student Communication: Ukrainian, Omani, and U.S. American College Students’ Perceptions and Practices
Authors: Tovares Alla V. , Gordon Cynthia , Al Zidjaly Najma 
Published: May 2021

<p>The unprecedented expansion of wireless technologies and the global pandemic of 2020-2021, which forced many educational establishments out of traditional face-to-face and into online instructional environments, have created an urgency for achieving a better understanding of the various education-related uses of mobile phones, and students’ attitudes toward them, worldwide. We conducted a questionnaire-based study to explore college undergraduate students’ perceptions and uses of mobile phones, with a focus on instructor-student communication and classroom use, across three diverse cultural contexts: Ukraine, Oman, and the United States. Based on our findings, we suggest that conceptualizing mobile phones as cultural tools and situating their use within cultural discourses illuminates how – and explains why – mobile phones are not “the same” tools for all students. The findings offer insights into students’ (developing) perspectives on uses of mobile phones, and provide grounds from which to formulate productive, and culturally appropriate, means of using them for educational purposes.</p><p> </p>
Functional Outcome and Community Reintegration of Survivors Following Disasters
Authors: Lee Su Yi , Mansoor Sahibzada Nasir , Amatya Bhasker , Sayed Tahir M. , Galea Mary P. , Khan Fary 
Published: May 2021

Objective:
The objective of the study is to evaluate functional outcomes and community reintegration of disaster survivors in Pakistan.

Methods:
This was a cross-sectional descriptive study of community-based participants at the Armed Forces Institute of Rehabilitation Medicine, Pakistan. The medical records were screened for eligibility of adults with disaster-related disability. Participants were interviewed in ambulatory clinics using validated measures: Neurological-Trauma Impairment Scale (NIS-Trauma), International Classification of Functioning, Disability, and Health-Generic Set, Community Integration Measure (CIM), Community Integration Questionnaire (CIQ), and EuroQol 5-Dimension 5-Level.

Results:
Participants were (n = 117, mean age = 35 years) with postdisaster injury up to 17 years; the majority had spinal cord injury (n = 62; 53%) and amputations (n = 44; 38%). At assessment, 80% were independent with mobility (with aids) and 29% with everyday living activities. They reported ongoing fatigue (54.7%), altered sensations (51.28%), and pain (50.43%), but fewer problems with mood and emotions. The impairment severity negatively impacted community activities (NIS-Trauma vs. CIQ: P < 0.001). As impairments improved with time (NIS-Trauma vs. time since injury: P = 0.003), so did community reintegration (time since injury vs. CIQ; P < 0.001) and perceived health status (time since injury vs. EuroQol; P = 0.001).

Conclusion:
Many participants reported various ongoing disability-related issues; however, majority were dependent with everyday living activities and well adapted in the community. Further robust studies are needed for evaluation of longer-term impact of the disability in disaster victims for the comprehensive healthcare in the community.
Association of Complaints of Arm, Neck, and Shoulders with Physical and Psychosocial Risks Factors among Computer Users of Nigerian Bank Employees
Authors: Tella B. A. , Akinfeleye A. M. , Oghumu S. N. , Adeleye A. R. 
Published: May 2021

Background:
Complaints of arm, neck, and shoulders (CANS) affects millions of computer users and are thought to be associated with physical and psychosocial risk factors. Assessing the risk factors of these complaints are imperatives for preventive measures in enhancing the effectiveness of clinical interventions, hence this study.

Materials and Methods:
A cross-sectional survey was conducted among 260 bankers whose major work task involved the use of desktop computers in Surulere Local Government Area, Lagos, Nigeria. Maastricht Upper Extremity Questionnaire (MUEQ) was used to collect the data. The MUEQ contains 95-item in seven main domains assessing physical and psychosocial risk factors with regards to work stations, posture during work, quality of break time, job demands, job control, and social supports. It also asked questions about the quality of the work environments and the occurrence of CANS. Data were summarized using descriptive statistics of frequencies and percentages, while Chi-square statistic tested the association of CANS with physical and psychosocial risk factors at a significance level of P ≤ 0.05.

Results:
A 70% 1 year prevalence rate of CANS was obtained. Poor body posture was significantly associated with the complaints of shoulder, arm, and elbow (P < 0.05). High job demand was significantly associated with the complaints of the shoulder and lower arm (P < 0.05), while poor work environment was significantly associated with the occurrence of CANS (P < 0.05).

Conclusion:
Physical and psychosocial risk factors of body posture, job demand, and work environment are associated with the prevalence of CANS among Nigerian bank employees.
Effects of Withania coagulans extract and morphine on spermatogenesis in rats
Authors: Noori Ali , Amjad Leila , Yazdani Fereshteh 
Published: May 2021

Purpose: To investigate the comparative effects of Withania coagolans extract and morphine on spermatogenesis in rats
Methods: W. coagolans was collected from Sistan and Baluchestan, Iran and 50 and 100 mg/kg body weight doses of methanol extract and 5, 10 and 15 mg/kg body weight doses of morphine were administered parenterally to the rats which were divided into groups. Blood samples were collected and the levels of luteinizing hormone (LH), follicle stimulating hormone (FSH), and testosterone were assayed. The testicular tissue was isolated for histopathological examination.
Results: No significant changes were observed in levels of LH, FSH and testosterone in treated groups (p < 0.05). However, there was significant difference between the treated groups for extract plus morphine groups, in terms of the number of spermatogonium, spermatocytes and spermatide variation. Moreover, the results indicate tissue disorders in all groups relative to control. The extract caused more disturbances in spermatogenesis compared to morphine, and appears to improve parameters related to spermatogenesis.
Conclusion: The results show that the higher dose of Withania coagolans extract (100 mg/kg) exerts varying effects on reproductive parameters. Moreover, the lower dose of Withania coagolans extract (50 mg/kg) enhanced spermatogenesis while also protecting against the damaging effects of morphine.
Efficacy of calcium sodium phosphosilicate containing dentifrice in reducing dentin hypersensitivity compared to other dentifrices with dentin tubule occluding molecules: A systematic review
Authors: Vaddamanu Sunil Kumar , Al Qahtani Saad M. , Sundarraj Ravi Kadur , Nagate Raghavendra Reddy , Apparaju Vijay 
Published: May 2021

Purpose: To assess the effectiveness of calcium sodium phosphosilicate in reducing dentin hypersensitivity compared to other dentin tubule occluding molecules.
Methods: A structured research question was formulated, and an electronic search of available literature was carried out via PubMed, Google Scholar, and Scopus. A hand search as well as a gray literature search were also carried out. The search produced a total of 67 articles. Of these, only eight articles were eligible to be included in our review. Risk of bias and study quality were checked using Cochrane tool. The review was registered in The International Prospective Register of Systematic Reviews (PROSPERO) under registration number CRD42018096200.
Results: The results show a reduction in dentin hypersensitivity with calcium sodium phosphosilicate compared to many other molecules. However, nanohydroxyapatite showed a better desensitizing effect compared to Novamin.
Conclusion: According to the available evidence, 5 % calcium sodium phosphosilicate containing toothpaste is more effective reducing dentin hypersensitivity compared to many other dentinal tubule occluding molecules.
Co-crystallization of quercetin and isonicotinamide using solvent evaporation method
Authors: Wisudyaningsih Budipratiwi , Setyawan Dwi , Siswandono  
Published: May 2021

Purpose: To obtain quercetin-isonicotinamide co-crystal (CQINA) with improved physicochemical and in-vitro dissolution characteristics.
Methods: Co-crystallization of quercetin (Q) and isonicotinamide (INA) in molar ratio of 1:1 was performed using solvent evaporation method with the addition of 50 mL of ethanol (99.9%, v/v). The resultant solution was thoroughly mixed and stirred at room temperature for 48 h to slowly evaporate the solvent until CQINA was obtained. The co-crystal phase was characterized using differential scanning calorimetry (DSC), powder x-ray diffractometry (PXRD), scanning electron microscopy (SEM), and fourier transform infrared (FTIR) spectroscopy. In-vitro dissolution was performed by USP method II in 900 mL citrate buffer (pH 5.0 ± 0.05), with stirring at 100 rpm and at 37 ± 0.5 °C.
Results: Computational approach predicted the formation of hydrogen bonds between Q and coformers used, and the interaction involved minimum energy. In CQINA thermogram, a new endothermic peak was formed with a melting point of 255.26 °C, while Q (314.85 °C) and INA (156.62 °C). Images from DSC, PXRD, SEM and FTIR showed that the crystal habits and morphologies of the CQINA differed from those of the original components. There was an improvement in the dissolution profile of CQINA, when compared with those of the original components.
Conclusion: Q and INA subjected to solvent evaporation result in the formation of a CQINA with different crystal habit, which possess physicochemical characteristics different from those of its constituents. Modification of Q crystals in CQINA increases its in vitro dissolution, making it a potential pharmaceutical agent.
Protective roles of ketamine and xylazine against lightinduced retinal degeneration in rats
Authors: Li Xuefeng , Li Tao , Yang Li , Li Long-Yun 
Published: May 2021

Purpose: To study the protective effects of ketamine and xylazine against light exposure-induced retinal degeneration (RD) in rats.
Methods: Sprague Dawley rats were divided into three groups viz: light damage before anesthesia (LAE), light damage only (LDO), and control (CON) group which was kept in the dark for 12 - 18 h to habituate before light exposure. LDO group was exposed to light before anesthesia, while LAE group was maintained under anesthesia with ketamine and xylazine. The groups were kept for 120 min in darkness after anesthesia prior to light exposure and they were awakened prior to light damage. Functional assessment was carried out using electroretinography while morphological analysis was carried out using histology and immunochemistry techniques.
Results: Ketamine-xylazine combination preserved the function of the retina and protected against light-induced RD based on retinal imaging studies and immunochemistry analysis. Xylazine and ketamine anesthesia provided protection against light-induced retinal damage, and thus reduced photoreceptor cell death.
Conclusion: These results indicate that xylazine and ketamine anesthesia offer protection against lightinduced damage and photoreceptor cell death in rats, and therefore, can potentially be developed for use in humans.
Restructuring the Academic Environment through TfDs for Sustainable Development: A Case Study of “Dr. Lecturer” a PhD Class Project on University of Port-Harcourt Community
Authors: Agha Charles 
Published: May 2021

This paper is anchored on the use of Theatre for Development (TfD) as a restructuring mechanism and strategy for sustainable growth and development. However, there is no gainsaying that within the academic environment that irregularity abound especially arising from misconducts like: sexual harassment, buying of grades, flirting with lecturers, victimization and indecent dressing. The TfD pilot project executed in the year 2017 by the students of Theatre and Media Arts, Department of Theatre and Film Studies, University of Port-Harcourt Rivers State, has been carefully reviewed to show the potency of performance arts (TfD) as a restructuring mechanism for development. This paper adopts the analytical research method and the TfD official eye approach. The finding reveals that Theatre for Development (TfD) is a grass root mobilization and concientization mechanism for sustainable growth and development especially as it relates to the recent trend in the academic communities.
Keywords: Theatre for Development, Performance, Mass Mobilization
Liberalism and Code of Ethics in Local Self-Government and Management
Authors: Jamnik Anton 
Published: May 2021

The roots of ethical relativism in philosophy of liberalism is in the growing radicalness of anthropocentrism being characteristic of modern thinking. The scientific intellect applying itself to external objective phenomena and based on a very narrow empiricist-analytical conception of science contains man’s desire for emancipation. The central question of liberalism is the fundamental emphasis on individualism and liberty. In such society is much more urgent to create the code of ethics in modern society in very differente level of society and modern life. Philosophical foundation of code of ethics in local Self-Government and management at all levels of social and personal life is more urgent and necessary than ever, if we want to preserve the basic dignity of human life, the fact that man respects himself, keeps his word, does not manipulate others nor allows being manipulated, keeps his personal freedom and self-confidence, self-respect and integrity. In Slovenia, management is responsible for preparation and fair presentation of financial statements in accordance with accounting standards, and within the requirements of the Slovenian Companies Act and in accordance with the code of ethics.
The USSR and Cold War Legacy: Implications for the Current International Agenda
Authors: Reynolds Michael A. 
Published: May 2021

Interview with Michael A. Reynolds, Director of the Program in Russian, East European and Eurasian Studies and Associate Professor in the Department of Near Eastern Studies of Princeton University, USAMichael A. Reynolds is an American historian and political analyst. His teaching and research range over the geography of the Middle East and Eurasia and covers the themes of empire, international relations, nationalism, geopolitics, ethnic conﬂ ict, and religion and culture. He is the author of Shattering Empires: The Clash and Collapse of the Ottoman and Russian Empires, 1908-1918 (Cambridge University Press, 2011), co-winner of the 2011 American Historical Association’s George Louis Beer Prize, a Financial Times book of the summer, and a Choice outstanding academic title. He is the editor of Constellations of the Caucasus: Empires, Peoples, and Faiths (Markus Weiner, 2016). Reynolds also writes on contemporary issues related to Turkey, Russia, the Caucasus region and U.S. foreign policy. His writings have appeared in The Wall Street Journal, The Los Angeles Times, Newsweek, The National Interest, and War on the Rocks, among other venues. He holds a PhD in Near Eastern Studies from Princeton and an MA in Political Science from Columbia.
THE ROLE OF UNDEREMPLOYMENT IN TURNOVER INTENTION THROUGH JOB DEPRIVATION AND JOB STRESS: A MULTIPLE MEDIATION MECHANISM
Authors: Afzal Hafiza Fatima , Islam K. M. Anwarul , Ismail Adnan , Tahir Muhammad Yasir , Zohaib Muhammad , Riaz Jamshaid , Ismail Muhammad 
Published: May 2021

Mainly determination focused on examining the 'underemployment 'via exploring its relationship with 'turnover intention'. Furthermore, the other variable 'job deprivation' was analyzed as a mediator for said relationship. In addition, the moderating role of 'job stress' was also premeditated for underemployment and job deprivation. Our targeted audience for this research article was "Traffic Police Wardens" (TPW). We have collected sample data from three cities of Punjab province (1) Lahore, (2) Multan, & (3) Bahawalpur. The population was the whole of Pakistan. Data was collected with the help of a questionnaire via cross-sectional data. 600 were distributed and received N= 499 which were completed by all aspects. The CFA was carried out in SEM (Structural Equation Model), whereas the data was analyzed in SPSS, on the 22nd version. The statistical analysis of this research article retrospection that Cronbach alpha (α) > 0.72 among all variables which are presenting the highest reliability. Further, we check the correlation of the variables among each other, and we found that the dependent variable (DV) is positively correlated to independent variables (IV) because 'underemployment in turnover intention is positively correlated with job deprivation and job stresses. Results of this research article demonstrate that correlation values were r = >0.5 and Regression’s values p = <0.01. It indicates that there was a positive and significant effect of underemployment on turnover intention. The findings also support job deprivation as an intervening mechanism for the relation of underemployment and turnover intention. In addition, job stress acts as a moderator for the relationship between underemployment and job deprivation. The study concludes with a discussion, limitations, and future research directions including implications both for theory and practitioners.
JEL Classification Codes: O15.
Approximation with activation functions and applications
Authors: Bessi Radhia 
Published: May 2021

Function approximation arises in many branches of applied mathematics and computer science, in particular in numerical analysis, in finite element theory and more recently in data sciences domain. From most common approximation we cite, polynomial, Chebychev and Fourier series approximations. In this work we establish some approximations of a continuous function by a series of activation functions. First, we deal with one and two dimensional cases. Then, we generalize the approximation to the multi dimensional case. Examples of applications of these approximations are: interpolation, numerical integration, finite element and neural network. Finally, we will present some numerical results of the examples above.
La théorie d’approximation des fonctions couvre de nombreuses branches en mathématiques appliquées, en informatique et en sciences de l’ingénieur, en particulier en analyse numérique, en théorie des éléments finis et plus récemment en sciences des données. Parmi les approximations fortement utilisées nous citons les approximations polynomiale de type Lagrange, Hermite ou au sens de Chebychev. Nous trouvons aussi l’approximation d’une fonction par une séries de Fourier, l’approximation rationnelle...Dans ce travail, nous établissons quelques résultats d’approximations d’une fonction continue par une série de fonctions de type activation. Nous traitons d’abord les cas d’une fonction à une seule puis à deux variables, puis nous généralisons l’approximation au cas multidimensionnel. Nous appliquons ces approximations pour l’interpolation et l’intégration numérique, en éléments finis et en réseau neuronal. Nous donnons pour chaque application quelques résultats numériques.
On the infinite loop spaces of algebraic cobordism and the motivic sphere
Authors: Bachmann Tom , Elmanto Elden , Hoyois Marc , Khan Adeel A. , Sosnilo Vladimir , Yakerson Maria 
Published: May 2021

We obtain geometric models for the infinite loop spaces of the motivic spectra $\mathrm{MGL}$, $\mathrm{MSL}$, and $\mathbf{1}$ over a field. They are motivically equivalent to $\mathbb{Z}\times \mathrm{Hilb}_\infty^\mathrm{lci}(\mathbb{A}^\infty)^+$, $\mathbb{Z}\times \mathrm{Hilb}_\infty^\mathrm{or}(\mathbb{A}^\infty)^+$, and $\mathbb{Z}\times \mathrm{Hilb}_\infty^\mathrm{fr}(\mathbb{A}^\infty)^+$, respectively, where $\mathrm{Hilb}_d^\mathrm{lci}(\mathbb{A}^n)$ (resp. $\mathrm{Hilb}_d^\mathrm{or}(\mathbb{A}^n)$, $\mathrm{Hilb}_d^\mathrm{fr}(\mathbb{A}^n)$) is the Hilbert scheme of lci points (resp. oriented points, framed points) of degree $d$ in $\mathbb{A}^n$, and $+$ is Quillen's plus construction. Moreover, we show that the plus construction is redundant in positive characteristic.Comment: 13 pages. v5: published version; v4: final version, to appear in \'Epijournal G\'eom. Alg\'ebrique; v3: minor corrections; v2: added details in the moving lemma over finite fields