bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation of the effects of welding variables on the welding defects of the friction stir welded high density polyethylene sheets
Authors: Bilici Mustafa Kemal
Published: December 2021

Modern thermoplastic materials are used in an expanding range of engineering applications, such as in the automotive industry, due to their enhanced stress-to-weight ratios, toughness, a very short time of solidification, and a low thermal conductivity. Recently, friction stir welding has started to be used in joining processes in these areas. There are many factors that affect weld performance and weld quality in friction stir welding (FSW). These factors must be compatible with each other. Due to the large number of welding variables in friction stir welding processes, it is very difficult to achieve high strength FSW joints, high welding performance, and control the welding process. Welding variables that form the basis of friction stir welding; machine parameters, tool variables, and material properties are divided into three main groups. Each welding variable has different effects on the weld joint. In this study, friction stir welds were made on high density polyethylene (HDPE) sheets with factors selected from machine parameters and welding tool variables. Although the welding performance, quality, and strength gave good results in some conditions, successful joints could not be realized in some conditions. In particular, welding defects occurring in the combination of HDPE material with FSW were investigated. Welding quality, defects, and performances were examined with macrostructure. In addition, the tensile strength values of some the joints were determined. The main purpose of this study is to determine the welding defects that occur at the joints. The causes of welding defects, prevention methods, and which weld variables caused were investigated. Welding parameters and welding defects caused by welding tools were examined in detail. In addition, the factors causing welding defects were changed in a wide range and the changes in the defects were observed.
The creation of international collaborative governance discourse during the process of teaching vocabulary at the university
Authors: Nurlybaeva Guliya
Published: December 2021

To improve the practice of public administration (PA) work at the time when collaboration governance principles and values have been especially needed due to the COVID-19 pandemic, the new educational approach providing the creation of international collaborative governance PA discourse has become a very important task for public administrations of all the countries of the world because the common terms could help to make the communication of public servants and citizens more effective both in one and the same country and between different countries and regions. The literature concerning collaborative governance PA discourse creation has been thoroughly studied by the author. The experience of the creation of international collaborative governance PA discourse during ELT (English Language Teaching) and ESP (English for Specific Purposes) training of PA students at the Institute for Social Sciences (the ISS) of Russian Presidential Academy of National Economy and Public Administration (RANEPA) has been analyzed. The research methods included theoretical research, analytical research methods, methodology of empirical research, and methods of comparative research. The results of the analysis made it possible to conclude that in modern conditions of globalization and international communication in order to understand better the common values of citizens, to avoid discrepancies in vocabulary application and to improve mutual understanding of civil servants speaking different languages, the unification of the descriptive list of English terms concerning public administration activity is needed; the creation of international collaborative governance PA discourse during educational and training process of future public administrators should contribute to PA activity. The International PA Vocabulary as well as the process of writing new textbooks and teaching aids based on it and using new digital technologies and new methodology should be introduced into educational process.
National Narcissism predicts the Belief in and the Dissemination of Conspiracy Theories During the COVID-19 Pandemic: Evidence From 56 Countries
Authors: Sternisko Anni , Cichocka Aleksandra , Cislak Aleksandra , Van Bavel Jay J.
Published: December 2021

Conspiracy theories related to coronavirus disease 2019 (COVID-19) have propagated around the globe, leading the World Health Organization to declare the spread of misinformation an “Infodemic.” We tested the hypothesis that national narcissism—a belief in the greatness of one’s nation that requires external recognition—is associated with the spread of conspiracy theories during the COVID-19 pandemic. In two large-scale national surveys ( NTotal = 950) conducted in the United States and the United Kingdom, and secondary analysis of data from 56 countries ( N = 50,757), we found a robust, positive relationship between national narcissism and proneness to believe and disseminate conspiracy theories related to COVID-19. Furthermore, belief in COVID-19 conspiracy theories was related to less engagement in health behaviors and less support for public-health policies to combat COVID-19. Our findings illustrate the importance of social identity factors in the spread of conspiracy theories and provide insights into the psychological processes underlying the COVID-19 pandemic.
Examining the Performance of the Trifactor Model for Multiple Raters
Authors: Soland James , Kuhfeld Megan
Published: December 2021

Researchers in the social sciences often obtain ratings of a construct of interest provided by multiple raters. While using multiple raters provides a way to help avoid the subjectivity of any given person’s responses, rater disagreement can be a problem. A variety of models exist to address rater disagreement in both structural equation modeling and item response theory frameworks. Recently, a model was developed by Bauer et al. (2013) and referred to as the “trifactor model” to provide applied researchers with a straightforward way of estimating scores that are purged of variance that is idiosyncratic by rater. Although the intent of the model is to be usable and interpretable, little is known about the circumstances under which it performs well, and those it does not. We conduct simulation studies to examine the performance of the trifactor model under a range of sample sizes and model specifications and then compare model fit, bias, and convergence rates.
Engaging Parents in the Development and Testing of a Website to Support Social-Communication and Play Development for Preschoolers with Autism Spectrum Disorder
Authors: Amsbary Jessica , Lin Mei-Ling , Savage Melissa N. , Fanning Leslie , Reszka Stephanie , Watson Linda R. , Boyd Brian
Published: December 2021

Preschoolers with autism spectrum disorder (ASD) present with social-communication and play challenges and would benefit from interventions targeting these skills. One way to ensure this is by engaging parents in technological supports to learn about an intervention and increase home-school collaboration. Thus, a website could potentially address both needs. This study describes the initial developmental processes of one such website. Specifically, we describe how engaging parents as stakeholders in the website development enhanced its future usability and feasibility. Data were collected through focus groups, interviews, and surveys to obtain parent feedback about website usability and applicability and about the intervention. Survey data were descriptively analyzed. Focus group and interview data were analyzed using systematic qualitative analysis. Parents perceived the website to be useful in helping them target social-communication and play with their preschoolers with ASD and highlighted specific aspects of the website and intervention they perceived as effective. Child outcomes and parent fidelity to the intervention supported these perceived developmental gains. Findings suggest that engaging parents in developmental processes may help ensure usability and applicability of resources and interventions. Furthermore, findings support the use of technology to help parents learn to use an intervention with their preschoolers with ASD. Implications for research and practice are discussed.
Psychometric Assessment of the Persian Version of Compassion Scale for Adolescents
Authors: Heidary Sara , Abdollahi Abbas , Jarrahi Elaheh , Ahmed Alim Al Ayub
Published: December 2021

The compassion scale for adolescents is a 20-item self-report measure consisting of three dimensions, namely, compassion toward other people, compassion toward oneself, and compassion toward other living things. This scale evaluates compassion in adolescents aged between 12 and 18 years old. The purpose of the current study is to assess the psychometric properties of the compassion scale among Iranian adolescents in junior high school and senior high school students. The number of students who voluntarily took part in this research was 302. The relationships between the compassion scale, mindfulness, emotion regulation, and well-being were explored to assess the convergent validity. Furthermore, the relationship between the compassion scale and anxiety was investigated to assess the divergent validity. The results of confirmatory factor analysis supported the three factors of the compassion scale among Iranian junior and senior high school students same as the original version. The results show that the compassion scale appears to be a reliable and valid measure for Iranian adolescents.
Strangers in the Dark: Navigating opacity and transparency in open online career-related knowledge sharing
Authors: Vaast Emmanuelle
Published: December 2021

Given repeated upheavals in jobs and organizations, people increasingly share career-related knowledge in open online platforms. Dealing with career-related knowledge in an open online setting, though, is challenging. It requires people to balance between exchanging too much and too little career-related knowledge, e.g., to disclose and share the right knowledge without jeopardizing themselves. This study examines how participants achieve such delicate balance in open online processes. It investigates discussions in a career advice-focused online platform. Findings reveal how open online career-related exchanges include sequences of knowledge sharing, knowledge evaluating, and of diverting. They also include sequences of regulating openness that involve securing opacity for the people participating while also ensuring the transparency of the process. The study unpacks how participants in an open online setting navigate the dynamic balance between individual opacity and processual transparency. Findings hold implications for scholarship on open organizing, careers, and advice networks, as well as for practice.
A Dialogic Perspective on Managing Knowledge Differences: Problem-solving while building a nuclear power plant safety system
Authors: Kou Chia-Yu , Harvey Sarah
Published: December 2021

To manage knowledge differences, existing research has documented two sets of practices: traversing and transcending knowledge boundaries. What research has yet to explore, however, is the dynamics through which traversing or transcending practices emerge in response to a particular problem situation. Using a qualitative, inductive study of the problem episodes encountered by groups of experts working on a large-scale project to build the safety system for a nuclear power plant, we observed that the emergence of traversing or transcending depended on how experts interpreted problems and initiated dialogues around specific problems. Our work provides insight into the condition through which knowledge integration trajectories may emerge.
Histology Atlas of the Developing Mouse Placenta
Authors: Elmore Susan A. , Cochran Robert Z. , Bolon Brad , Lubeck Beth , Mahler Beth , Sabio David , Ward Jerrold M.
Published: December 2021

The use of the mouse as a model organism is common in translational research. This mouse–human similarity holds true for placental development as well. Proper formation of the placenta is vital for development and survival of the maturing embryo. Placentation involves sequential steps with both embryonic and maternal cell lineages playing important roles. The first step in placental development is formation of the blastocyst wall (approximate embryonic days [E] 3.0-3.5). After implantation (∼E4.5), extraembryonic endoderm progressively lines the inner surface of the blastocyst wall (∼E4.5-5.0), forming the yolk sac that provides histiotrophic support to the embryo; subsequently, formation of the umbilical vessels (∼E8.5) supports transition to the chorioallantoic placenta and hemotrophic nutrition. The fully mature (“definitive”) placenta is established by ∼E12.5. Abnormal placental development often leads to embryonic mortality, with the timing of death depending on when placental insufficiency takes place and which cells are involved. This comprehensive macroscopic and microscopic atlas highlights the key features of normal and abnormal mouse placental development from E4.5 to E18.5. This in-depth overview of a transient (and thus seldom-analyzed) developmental tissue should serve as a useful reference to aid researchers in identifying and describing mouse placental changes in engineered, induced, and spontaneous disease models.
Relying on the engagement of others: A review of the governance choices facing social media platform start-ups
Authors: Reuber A Rebecca , Fischer Eileen
Published: December 2021

We are grateful to Professors Rebecca Reuber and Eileen Fischer for contributing our 2022 annual review article. This insightful review explores an issue of great contemporary importance regarding the relationship between entrepreneurial activities and social media platforms. Whilst there is much popular and media commentary regarding the opportunities such platforms offer for entrepreneurship, we lack informed, academic reflection upon the role and influence of such platforms for both good and ill. Hence, this review article is timely in identifying current practices and raising important issues for future research. Our thanks to the authors for their valuable contribution to the ISBJ.

Entrepreneurs create digital platforms which, in turn, facilitate entrepreneurial behaviours of others, the platform users. An important start-up activity is developing the mechanisms to govern user participation. While prior literature has provided insights on the governance of innovation platforms and exchange platforms, it has shed little light on the governance of social media platforms. In this review, we synthesize the emerging literature on diverse social media platforms, focussing on four types of governance mechanisms: those that regulate user behaviour, those related to user identification and stature, those that structure relationships among users and those that direct user attention. We highlight the implications of this body of literature for entrepreneurship scholars.
Enhanced responsiveness to hypoxic panicogenic challenge in female rats in late diestrus is suppressed by short-term, low-dose fluoxetine: Involvement of the dorsal raphe nucleus and the dorsal periaqueductal gray
Authors: Batistela Matheus F , Vilela-Costa Heloísa H , Frias Alana T , Hernandes Paloma M , Lovick Thelma A , Zangrossi Helio
Published: December 2021

Background:

Acute hypoxia, which is panicogenic in humans, also evokes panic-like behavior in male rats. Panic disorder is more common in women and susceptibility increases during the premenstrual phase of the cycle.

Aims:

We here investigated for the first time the impact of hypoxia on the expression of panic-like escape behavior by female rats and its relationship with the estrous cycle. We also evaluated functional activation of the midbrain panic circuitry in response to this panicogenic stimulus and whether short-term, low-dose fluoxetine treatment inhibits the hyper-responsiveness of females in late diestrus.

Methods:

Male and female Sprague Dawley rats were exposed to 7% O2. Females in late diestrus were also tested after short-term treatment with fluoxetine (1.75 or 10 mg/kg, i.p.). Brains were harvested and processed for c-Fos and tryptophan hydroxylase immunoreactivity in the periaqueductal gray matter (PAG) and dorsal raphe nucleus (DR).

Results:

Acute hypoxia evoked escape in both sexes. Overall, females were more responsive than males and this is clearer in late diestrus phase. In both sexes, hypoxia induced functional activation (c-Fos expression) in non-serotonergic cells in the lateral wings of the DR and dorsomedial PAG, which was greater in late diestrus than proestrus (lowest behavioral response to hypoxia). Increased responding in late diestrus (behavioral and cellular levels) was prevented by 1.75, but not 10 mg/kg fluoxetine.

Discussion:

The response of female rats to acute hypoxia models panic behavior in women. Low-dose fluoxetine administered in the premenstrual phase deserves further attention for management of panic disorders in women.
Adolescents’ Lockdown-Induced Coping Experiences (ALICE) Study: A Qualitative Exploration of Early Adolescents’ Experiences of Lockdown and Reintegration
Authors: Ashworth Emma , Hunt Anna , Chopra Jennifer , Eames Catrin , Putwain David W. , Duffy Kathryn , Kirkby Joanna , McLoughlin Shane , Saini Pooja
Published: December 2021

The aim of this study was to explore the experiences and perceived impact of the COVID-19 lockdowns among early adolescents in the northwest of England, as well as explore the self-care and coping strategies that helped the young people continue to thrive. Fourteen adolescents, 9 boys and 5 girls, were recruited from four secondary schools in North West England. Remote online interviews were conducted. Inductive reflexive thematic analysis was used to analyse the interview data and four themes were identified: (1) change: ‘life feels weird’; (2) embracing lockdown; (3) feelings of loss; and (4) stress, worry and challenge. Processes identified will be able to help inform policy and practice for supporting adolescents in the future, including the promotion of positive coping strategies and the provision of resources for young people, schools and families.
Heterogeneous immunoreactivity of axonal spheroids in focal symmetrical encephalomalacia produced by Clostridium perfringens type D epsilon toxin in sheep
Authors: Manavis Jim , Blumbergs Peter , Jerrett Ian , Hanshaw Daren , Uzal Francisco , Finnie John
Published: December 2021

Since axonal injury (AI) is an important component of many veterinary neurologic disorders, we assessed the relative ability of a panel of antibodies (amyloid precursor protein, 3 subunits of neurofilament protein, protein gene product 9.5, ubiquitin, and synaptophysin) to detect axonal swellings or spheroids. Abundant axonal spheroids found in necrotic internal capsule foci produced in 4 sheep by chronic Clostridium perfringens type D epsilon neurotoxicity provided a model system in which to evaluate this important diagnostic tool. There was heterogeneous labeling of subsets of spheroids by the respective antibodies, suggesting that, in order to detect the complete spectrum of AI in diagnostic cases, a range of antibodies should be used, not only when spheroids are plentiful but also when they are few in number or incompletely developed. The application of insufficient markers in the latter cases can potentially lead to the contribution of AI to lesion pathogenesis being underappreciated.
Institutional conformity, entrepreneurial governance and local contingency: Problematizing central-local dynamics in localizing China's low-income housing policy
Authors: Yu Li , Xu Wei
Published: December 2021

Central-local dynamics are crucial to understand the implementation of China’s reform policies and regional economic development. Until recently, the research has focused on either end of the political spectrum, celebrating the top-down channeling of neoliberal-like reforms led by the central government or detailing the bottom-up process of policy innovation and entrepreneurism centred on local states. Knowledge is not substantial about how the central state interacts with local authorities in the localization of central public policies and, to a lesser extent, why some policies are properly implemented at the local level but others not. Through investigating the implementation of major national low-income housing policies in Chengdu and Shanghai, we interrogate three proposed theoretical constructs: political conformity, entrepreneurial governance and local contingency. Results show that institutional conformity manifests in cross-scale consistency in policy goals, political obligation of local states to conform to the central authority, and balance between local incentives and central state sanctions. In the process of balancing local and central interests, the local development priorities are framed along the line of local state entrepreneurism favoring fiscal responsibility, economic efficiency, and economic growth. Finally, locally contingent factors often interact with and mediate external forces and have a significant impact on localizing public policies in China.
Facing geography: A new research agenda
Authors: Gillespie Kerry
Published: December 2021

This paper offers a new disciplinary research agenda for a geography of the human face. Locating a research lacuna within the subfield of embodied geographies, the paper highlights existing interdisciplinary scholarship on the face, suggesting avenues through which geographers can both complement and advance such discussions. The overall proposal is to (re)consider the spatialities of the face via three routes: the political and biometric, the aesthetic and facial modification. The paper concludes by suggesting a disciplinary opportunity for a future facialised geography, providing valuable insight into this dynamic bodily site upon and through which the world is encountered and experienced.
Timescale-dependent responses of hydrological changes from global closed basins since the last glacial maximum
Authors: Zhang Xinzhong , Li Yu , Han Qin , Zhang Yuxin
Published: December 2021

Water shortage has plagued the social development and human well-being of global closed basins. However, the hydroclimate research on different time scales in these regions remains inadequate at a global scale. In this paper, the hydrological responses from global closed basins to millennial-scale and centennial-scale cold/warm events since the Last Glacial Maximum were explored. Closed-basin lake records indicate that the westerlies-dominated closed basins are generally wetter during cold events than the corresponding warm ones on the millennial and centennial scales. In contrast, the monsoon-influenced closed basins prevail wetter climates during warm events. According to the hydroclimate simulations, precipitation seasonality plays a significant role in causing above spatial–temporal patterns. There is more winter rainfall in westerlies-dominated closed basins during cold events in the Last Glacial Maximum and Little Ice Age and more summer rainfall in monsoon-influenced closed basins during warm events in the mid-Holocene and Medieval Climate Anomaly. Under modern and future global warming, the hydroclimate changes in global closed basins show more regional differentiation, resulting in wetter mid-latitude Asian and low-latitude African closed basins but drier southwest North American and Australian closed basins.
Optimizing the input vectors of applied artificial neural network models for wind power production forecasting
Authors: Kolokythas Konstantinos V , Argiriou Athanassios A
Published: December 2021

The significant increase of wind energy production worldwide revealed the necessity of its accurate forecasting. However, this is a very complex and, despite the progress made, more accurate forecasting methods are still needed. Accurate forecasts will contribute to a better power plant and grid management by solving problems related to the distribution and storage of the produced electricity, maximizing thus the profits of wind energy investments, contributing ultimately to their further enhancement. Here we present the development and validation of selected artificial neural network (ANN) wind energy forecasting models that produce hourly forecasts for 24 hours forecast horizon. The models are developed and validated using wind speed, direction, and energy produced by a wind power plant located at a semi-mountainous area in Western Greece. The ANN forecasts are compared against those of the persistence method using the Root Means Square Error (RMSE) and the Mean Absolute Percentage Error (MAPE) statistics.
Analysis of Ultimate Bearing Capacity and Parameters of Steel Support Cutting Pipe Roofing Structure
Authors: Lu Bo , Zhao Wen , Du Xi , Li Shengang , Guan Yongping , Wang Zijun
Published: December 2021

A new pipe-roof construction method, the steel support cutting pipe method (SSCP), was proposed to improve the construction security and accuracy of pipe jacking as well as underground space usage. The pipe-roof method is one of the underground excavation methods which push multiple steel pipes into the soil, then connect the steel pipes horizontally to form a whole. The proposed structure’s failure mode and force characteristics were determined through theoretical analysis, and then its ultimate bearing capacity and influencing parameters were analyzed through laboratory experiments and numerical simulation. The research results show that the structure’s bearing capacity depends on the steel pipe’s buckling load; the structure’s failure mode is a result of the steel pipe’s buckling. The ultimate bearing capacity of the pipe-roof structure first increases and then decreases with the increase of the steel pipe chord height ratio. The ultimate bearing capacity reaches the maximum when the ratio is 0.33. In addition, the structure’s ultimate bearing capacity is positively related to the steel pipe wall thickness and the pipe section’s length. This can be obtained from the relationship curve showing that the steel pipe wall thickness should be selected according to the engineering requirements and that the pipe section’s length is preferably 2.3 times the diameter of the steel pipe in the construction design.
Monitoring Democracy in the Eastern Neighbourhood: When Are the EU’s Assessments Lenient and Why?
Authors: Badalyan Lusine
Published: December 2021

How reliable are the EU’s reports when assessing its Eastern neighbouring countries’ progress towards democracy? To explore this question, I first developed an original scale that enables to identify the variation in the quality of the EU’s assessment reports across the partner countries and over time. Subsequently, by employing both quantitative and qualitative research techniques, I carried out a systematic analysis of the key structural factors that tend to influence and compromise the quality of the EU’s assessments. The main results of the study suggest that the more dependent partner countries are on the EU as a source of development aid and export market, the less lenient the EU’s institutions appear in their assessment reports. Furthermore, the findings of the study show that somewhat counter-intuitively, the more authoritarian the regime in question is, the less willing the EU appears in criticizing the country’s poor democratic performance. However, when a certain level of political liberalization is underway, the EU institutions become rather critical in their assessment reports by explicitly and openly denouncing the country’s poor democratic performance.
Willing and Able? The Screening and Adoption of Habitual Family Venture Opportunities
Authors: Vardaman James M. , Markin Erik T. , Penney Christopher R. , Marler Laura E. , Mckee D’Lisa N.
Published: December 2021

This article develops a two-part theoretical framework synthesizing the socioemotional wealth (SEW) perspective with image theory to explain the ways in which family decision makers screen and potentially adopt habitual new venture opportunities. The model theorizes that opportunities are initially screened according to their ability to preserve SEW and fit with the family’s value images and subsequently explains how SEW willingness interacts with the family entrepreneur’s trajectory and strategic images to predict whether the venture will be pursued as a serial or portfolio opportunity. Theoretical implications and directions for future research are also discussed.
Policy Diffusion of Performance Funding Equity Metrics: Traditional Neighbor and Dyadic Survival Analyses
Authors: Li Amy Y. , Kelchen Robert
Published: December 2021

While previous research on higher education policy diffusion often conceptualizes diffusion as occuring across neighboring governments, we conceptualize policy diffusion as also occuring across pairs of governments (dyads) regardless of geographic proximity. We apply both conceptualizations and use survival analysis techniques to examine factors associated with state adoption of performance funding equity metrics. Results show that the proportion of neighbors with equity metrics is unrelated to the likelihood of adopting a metric for either the 2- or 4-year sector, suggesting no evidence of policy diffusion across borders. The directed dyad analysis reveals that states are less likely to adopt a 4-year metric when the other state in the pair already operates a 4-year metric, indicating that states look beyond neighbors in policy avoidance behaviors. Internal state factors such as higher levels of legislative professionalism and greater enrollment of underrepresented minority and low-income students increase the likelihood of policy adoption. A state is less likely to imitate the adoption of 2-year equity metrics in another state when the pair show greater differences in legislative professionalism, minority and low-income student enrollment, income per capita, and income inequality. Our research highlights the utility of quantitatively modeling policy diffusion across governmental units that are distantly located, especially for higher education policy components that are nationally visible.
The Bind of Unilateral Power Dynamics and Youth Voice in School Politics
Authors: Domínguez Ashley D. , Clement Valencia , Bertrand Melanie
Published: December 2021

Research has shown the value of including youth, especially minoritized students, in school- and district-level educational decision-making. However, power dynamics, as related to adultism, along with other inequities, are barriers to youth’s political influence. We elucidate these barriers by exploring the possible relationship between adult-adult power dynamics, on one hand, and levels of student voice in schools, on the other. Interviews with teachers and administrators about youth voice initiatives indicated that bounded rationality illuminates how limiting access to knowledge, a form of power, can impact educator decision-making. In addition, bounded rationality bolsters unilateral power structures and therefore curtails youth voice. However, we also found that building relational power between teachers and students and maneuvering beyond bounded rationality increases opportunities for youth voice.
The Role of State Mobilization for Volunteerism in China
Authors: Zhao Rong , Lilly Adam G.
Published: December 2021

Research on China’s volunteerism highlights the state as a major force in mobilizing volunteer participation. Nevertheless, limited quantitative research exists documenting the extent to which Chinese volunteers are connected to the state system. Using a nationally representative dataset, the 2012 Chinese General Social Survey, this study examines how an individual’s employment affiliation with state-controlled institutions influences their probability to volunteer. The results show that the Chinese government not only directly mobilizes employees of the state system to volunteer but also has significant influence over the general population’s volunteering. This influence is mainly through the existence of Chinese Communist Party chapters in every corner of society, as well as the state’s direct and indirect control over social organizations that organize volunteer activities. We thus question the extent to which volunteerism in China is truly voluntary and call for more critical analysis of this issue.
A comprehensive review on the impact of nanofluid in solar photovoltaic/thermal system
Authors: Manikandan E , Mayandi K , Sivasubramanian M , Rajini N , Rajesh S , Muthulakshmi L , Rashedi Ahmad
Published: December 2021

Solar energy is a major renewable energy resource used in power production, heating processes, and other applications such as domestic and industrial utilization. It is an abundant form of green energy. Different techniques have been made for energy conversion and one among them is solar photovoltaic/thermal (PV/T) system. Unfortunately, the greatest cause of concern is the rise in temperature of solar PV cells, which will have a negative effect on electrical performance. Thereby, eliminating excess heat on PV cells with heat transfer fluids to lower the temperature of the cells can improve electrical efficiency. A nanofluid is a promising heat transfer fluid to effectively enhance the system efficacy compared with conventional fluids. As the nanoparticle size is very small, the surface area of the nanoparticle is large so it enhances the heat transfer rate. Thereby, recently it has taken on a new dimension for research studies to enhance its thermal behavior for engineering application. This review paper discusses about the importance of nanofluid in solar PV/T system and advantages of employing nanofluid in PV/T system which has high thermo-physical properties. Nanoparticle and nanofluid preparation methods were presented. The thermo-physical properties like thermal conductivity, viscosity, density, and specific heat capacity were also discussed.
Thermal slip and homogeneous/heterogeneous reaction characteristics of second-grade fluid flow over an exponentially stretching sheet
Authors: Khan Aamir Abbas , Khan Muhammad Naveed , Nadeem Sohail , Hussain Syed Modassir , Ashraf Muhammad
Published: December 2021

This paper deals with an unsteady magnetohydrodynamic two-dimensional second-grade fluid flow towards a permeable exponentially stretching surface with heterogeneous–homogeneous reactions. The nonuniform heat source/sink, thermal slip, and thermal radiation effect are also considered to analyze the thermal attributes. The modeled equations of motions are converted into nonlinear ordinary differential equations (ODEs) by suitable transformations. A MATLAB Bvp4c approach is employed for the numerical solution of ODEs. The outcomes of various parameters are scrutinized by graphs. The quantities of interests such as Nusselt number and the skin friction are presented and discussed. The resistance effects take place due to higher estimations of second-grade parameter, as a result, the velocity field declines. The temperature field raises with the increment of radiation parameter. The concentration of nanoparticles decaying when heterogeneous-homogeneous reactions become larger. Moreover, from the tabulated data, it is noticed the growing estimations of K and M boosts the coefficient of skin friction.
Reproductive intentions among HIV-negative gay and bisexual men initiating pre-exposure prophylaxis in the Sustainable Health Center Implementation pre-exposure prophylaxis pilot study, 2014–2016
Authors: Jones Jamal T , Coleman Megan , Hoover Karen W , Sarkodie Eleanor , Smith Dawn K
Published: December 2021

Introduction

We assessed reproductive intentions and associated characteristics among men enrolled in the Sustainable Health Center Implementation pre-exposure prophylaxis (PrEP) Pilot (SHIPP) Study.

Methods

We analyzed baseline data from 1275 men who self-identified as gay or bisexual and participated in the SHIPP study. SHIPP was a cohort study of PrEP implementation in five community health centers in Chicago, Jackson, Philadelphia, and Washington, D.C. conducted from 2014 to 2016. Participants completed audio computer-assisted self-interviews querying intentions to have a child in the future. We estimated the association between participants’ reproductive intentions and their characteristics using Poisson regression models.

Results

Approximately 47% of participants indicated their intentions to have a child. Black/non-Hispanic (aPR = 1.40; 95% CI: 1.10–1.78) and other/non-Hispanic participants (aPR = 1.40; 95% CI: 1.01–1.93) were more likely to report intentions to have a child than white/non-Hispanic participants. Participants were less likely to report intentions to have children as age increased (18–29 years, reference group; 30–39 years, aPR = 0.80, 95% CI: 0.64–0.99; 40–49 years, aPR = 0.49, 95% CI: 0.33–0.72; 50+ years, aPR = 0.07, 95% CI: 0.02–0.21).

Conclusions

Clinicians offering PrEP to black and other/non-Hispanic gay and bisexual men should assess their reproductive intentions as family-planning counseling may be an opportunity to introduce PrEP to HIV-negative gay and bisexual men.
Impact of poetry-based ethics education on the moral sensitivity of nurses: A semi-experimental study
Authors: Rashidi Kobra , Ashktorab Tahereh , Birjandi Mehdi
Published: December 2021

Background:

The nurses’ moral sensitivity is the first step to make right decisions in difficult moral situations. Therefore, its education and promotion is highly important.

Research objectives:

The aim of this study was to examine the impact of poetry-based ethics education on the nurses’ moral sensitivity.

Research design and methods:

This was a semi-experimental study. The sample consisted of 108 nurses who were selected by convenience sampling method and randomly assigned to three groups: intervention with poetry (G1), who read a booklet about values and principles of professional ethics as well as poems related to these subjects for 1 month; intervention without poetry (G2), who only read the booklet without any poetry; and control group (G3), who did not receive any intervention. Data were collected by Moral Sensitivity Questionnaire that was completed by the participants prior to the intervention (T1), 1-month post-intervention (T2), and 2-month post-intervention (T3). Data were analyzed by SPSS 16 software.

Ethical considerations:

This study was conducted in accord with the principles of research ethics and regulations relating to informed consent.

Findings:

Changes in the mean score of total moral sensitivity were significantly higher in G1 than in G2, which was in turn significantly higher than in G3. This increase was significant from T1 to T2 and T2 to T3 (P < 0.001). In all subscales, there was a significant difference between the mean changes in the three groups, so that in these subscales, the mean changes in G1 were significantly higher than those in other groups.

Discussion:

In line with previous studies, our results showed the effectiveness of poetry-based education on the transfer of educational concepts and increase moral sensitivity scores with greater lasting effect.

Conclusion:

The use of interdisciplinary subjects such as poetry, due to its entertaining, fun, and lasting effect on minds; level of awareness; and actions of nurses, can help raise nursing moral sensitivity.
Viewing the image? Ultrasound examination during abortion preparations, ethical challenges
Authors: Kjelsvik Marianne , Sekse Ragnhild JT , Aasen Elin M , Gjengedal Eva
Published: December 2021

During preparation for early abortion in Norway, an ultrasound examination is usually performed to determine gestation and viability. This article aims to provide a deeper understanding of women’s and health care personnel’s (HCP) experiences with ultrasound viewing during abortion preparation in the first trimester. Qualitative in-depth interviews with women who had been prepared for early abortion and focus group interviews with HCP from gynaecological units were carried out. A hermeneutic-phenomenological analysis, inspired by van Manen, was chosen. Thirteen women who were pregnant and considering abortion in their first trimester and 20 HCP, namely, 19 registered nurses and one medical doctor, were recruited from gynaecological units at six hospitals. The study was approved by the ethics committee (2014/1276). The essential meaning structure of ‘autonomy under pressure’ consisted of two themes that expressed the different experiences of both the women and the HCP, namely, expectations versus precautions and choice versus protection. The women and HCP expressed different attitudes before the consultation that affected their experiences of the ultrasound examination. While the women had expectations of a clarification based on their choice to either see or not see the ultrasound image, HCP seemed to be more concerned with predetermined rules that they believed would protect the women. Consequently, the basis for dialogue was not optimal, and women’s autonomy was under pressure. Health care personnel are ethically challenged during preabortion ultrasound examinations. Meeting the individual woman’s needs and respecting her autonomy during preparation for abortion requires sensitivity, involvement, and dialogue skills by health personnel. According to the woman’s desire to be informed about the possibility of viewing the image during the abortion preparations, a dialogue that is focused in this direction should arise before the examination.
Social Positioning Analysis as a Qualitative Methodology to Study Identity Construction in People Diagnosed With Severe Mental Illnesses
Authors: Saavedra Javier , Arias-Sánchez Samuel , de la Mata Prof. Manuel L. , Matías-García Jose Antonio
Published: December 2021

Severe mental illnesses (SMI) in general, and schizophrenia in particular, have been characterized as alterations of the experience of self and identity. When first diagnosed with SMI, the subjective experiences and specific narrative challenges faced by this population are particularly important. Therefore, qualitative approaches which allow to analyze these subjective experiences should be developed. This article presents in detail a specific method, called Social Positioning Analysis, which makes the complexity of narratives and life stories with multiple turning points understandable. To develop this methodological proposal, it has been taken into account the performative aspects of social interaction in which narratives are constructed. The methodology has previously been used in other health contexts and is innovative in the field of mental health. Linguistic criteria, definitions, and multiple examples are included to facilitate its application, as well as some reflections about its potential and possible benefits.
Implications of the Revised Common Rule for Qualitative Health Research: Opportunities, Concerns, and Recommendations
Authors: Owczarzak Jill , Smith Katherine C.
Published: December 2021

In January 2019, revisions to federal regulations that outline requirements for ethical oversight of human subjects research (The Revised Common Rule) went into effect. These revisions reflect major changes in thinking about risk and protection of research subjects. The Revised Common Rule (RCR) considerably curtails federal oversight of social and behavioral science, with most non-interventional research and “benign” behavioral interventions becoming exempt from mandated Institutional Review Board (IRB) approval, although determination of exemption remains with IRBs. As two qualitative health researchers serving on IRBs, we consider how this contraction of federal oversight dovetails with longstanding criticisms of IRB oversight of qualitative research. We explore the passage of the RCR as a point of potentially important change in procedure and principle in relation to ethical oversight of qualitative health research. We identify challenges and opportunities with these changes at the institutional, professional, and individual levels for ethical and impactful qualitative research.
Detection of Feigning of Different Symptom Presentations With the PAI and IOP-29
Authors: Pignolo Claudia , Giromini Luciano , Ales Francesca , Zennaro Alessandro
Published: December 2021

This study examined the effectiveness of the negative distortion measures from the Personality Assessment Inventory (PAI) and Inventory of Problems-29 (IOP-29), by investigating data from a community and a forensic sample, across three different symptom presentations (i.e., feigned depression, posttraumatic stress disorder [PTSD], and schizophrenia). The final sample consisted of 513 community-based individuals and 288 inmates (total N = 801); all were administered the PAI and the IOP-29 in an honest or feigning conditions. Statistical analyses compared the average scores of each measure by symptom presentation and data source (i.e., community vs. forensic sample) and evaluated diagnostic efficiency statistics. Results suggest that the PAI Negative Impression Management scale and the IOP-29 are the most effective measures across all symptom presentations, whereas the PAI Malingering Index and Rogers Discriminant Function generated less optimal results, especially when considering feigned PTSD. Practical implications are discussed.
Risk Communication and Community Engagement During the Migrant Worker COVID-19 Outbreak in Singapore
Authors: Tam Wai Jia , Gobat Nina , Hemavathi Divya , Fisher Dale
Published: December 2021

In early phases of the COVID-19 pandemic in Singapore, Risk Communication and Community Engagement (RCCE) with large, diverse communities of migrant workers living in high-density accommodation was slow to develop. By August 2020, Singapore had reported 55,661 cases of COVID-19, with migrant workers comprising 94.6% of the cases. A system of RCCE among migrant worker communities in Singapore was developed to maximize synergy in RCCE. Proactive stakeholder engagement and participatory approaches with affected communities were key to effective dissemination of scientific information about COVID-19 and its prevention.
Feasibility and Acceptability of Engaging Significant Adults in Youth Sexual and Relationship Violence Prevention Work
Authors: Banyard Victoria , Jefferson Gena C. , Segura Anna , Forman Susan G. , Haviland Mary , McMahon Sarah , DeSilva Abigail R. , Frye Victoria , Sarkar Saswati
Published: December 2021

Relationship and sexual violence (RSV) disproportionately affect youth in immigrant and other marginalized communities yet few prevention initiatives are truly grounded in their experiences. The current study represents a pilot implementation evaluation of youth-led workshops to engage significant adults (parents, grandparents, aunts, adult siblings, community leaders) as RSV prevention partners in diverse communities in a large urban area. The current mixed methods evaluation examined the perceptions of 66 adults and six youth leaders of four, day-long adult training workshops. Results showed high feasibility and acceptability and an important role for significant adults in enhancing RSV prevention.
The Dyadic Health Influence Model
Authors: Huelsnitz Chloe O. , Jones Rachael E. , Simpson Jeffry A. , Joyal-Desmarais Keven , Standen Erin C. , Auster-Gussman Lisa A. , Rothman Alexander J.
Published: December 2021

Relationship partners affect one another’s health outcomes through their health behaviors, yet how this occurs is not well understood. To fill this gap, we present the Dyadic Health Influence Model (DHIM). The DHIM identifies three routes through which a person (the agent) can impact the health beliefs and behavior of their partner (the target). An agent may (a) model health behaviors and shape the shared environment, (b) enact behaviors that promote their relationship, and/or (c) employ strategies to intentionally influence the target’s health behavior. A central premise of the DHIM is that agents act based on their beliefs about their partner’s health and their relationship. In turn, their actions have consequences not only for targets’ health behavior but also for their relationship. We review theoretical and empirical research that provides initial support for the routes and offer testable predictions at the intersection of health behavior change research and relationship science.