bluuebunny/crossref_metadata_2025 huggingface dataset:
L’effondrement, tourbillons et perte de repères
Authors: Salerno Gabriel
Published: April 2021

Lorsque nous avons publié l’article de Gabriel Salerno, fin 2018, qui présentait les diverses interprétations de l’effondrement identifiables dans la littérature sur le sujet, nous étions loin d’imaginer qu’un an plus tard, une rupture majeure — la Covid-19 — allait bouleverser les sociétés à l’échelle planétaire. Bien entendu, la crise sanitaire n’a pas « effondré » le monde dans lequel nous vivons, mais elle a montré la grande vulnérabilité des sociétés et signifié à l’homme qu’il n’était pas à l’abri de grands ébranlements. Nous avons donc invité Gabriel Salerno à revenir sur le concept d’effondrement et ce qui a pu le faire évoluer depuis 2018. Après avoir rappelé que les représentations de l’effondrement se déclinent à diverses échelles d’espace et de temps, Gabriel Salerno précise les questionnements philosophiques qui les accompagnent. À commencer par la façon d’appréhender le progrès scientifique et technique qui, jusqu’ici, a accompagné le développement des sociétés, en particulier en Occident, mais qui n’est plus unanimement considéré comme un vecteur positif dans le processus civilisateur. Cette remise en question de la place du progrès, jusqu’ici moteur de l’Histoire, brouille la vision de l’avenir de l’humanité et interroge sur le sens de l’Histoire. Les trois grandes interprétations de l’effondrement oscillent entre une vision cyclique, une vision progressiste et une vision décliniste de l’Histoire ; mais on constate, selon l’auteur, une tendance à un raffermissement des positions, voire une radicalisation, entre ceux qui acceptent de considérer l’effondrement et ceux qui refusent. Outre les clivages relatifs aux questions environnementales et sociales, l’auteur pointe une crise de la cognition, qui s’observe notamment au travers de la diffusion des théories du complot. Pour éviter que les thèses conspirationnistes n’entravent la cohésion et l’analyse objective des changements à l’œuvre dans notre civilisation, il est important de remédier à la perte de sens en cours et de remobiliser les sociétés en redonnant un sens à l’Histoire — proposer un nouvel élan pour conjurer les risques d’effondrement…  S.D.
Sécurité alimentaire de la France : allier le bleu et le vert
Authors: Abis Sébastien , Coutansais Cyrille P.
Published: April 2021

Un peu plus d’un an après le début de la pandémie et les scènes d’affolement montrant de nombreuses personnes remplissant leur chariot dans les magasins par crainte de pénuries de nourriture, les Français ont pu constater qu’ils n’ont manqué de rien pendant cette crise et que les approvisionnements alimentaires n’ont quasiment pas été affectés. Toutefois, l’épisode que nous traversons a soulevé la question de la sécurité de ces approvisionnements et montré l’importance de pouvoir disposer d’une production agricole nationale. Or, alors que le pays dispose d’importantes capacités dans le domaine halieutique, il reste fortement dépendant des importations pour satisfaire la consommation nationale de produits de la mer. C’est un paradoxe important dont Sébastien Abis et Cyrille Coutansais nous présentent ici les tenants et aboutissants. Mais c’est aussi une voie d’avenir trop peu explorée par le secteur agroalimentaire français, forte de nombreux atouts qui pourraient être exploités et pourraient permettre des synergies intéressantes avec l’agriculture terrestre (« allier le bleu et le vert »). Complétant notre série consacrée à la mer et aux océans, cet article brosse le portrait du secteur aquacole français, souligne les défis auxquels il a été et demeure confronté dans le contexte de la mondialisation des échanges, et invite à exploiter les atouts qui sont les siens pour renforcer le secteur agricole français et la sécurité alimentaire du pays.  S.D.
La narrativité comme outil de recherche et d’évaluation à l’âge adulte des anciens enfants placés
Authors: Novo Alexandre
Published: May 2021

Alors que le nombre d’enfants et d’adultes qui connaissent ou ont connu un suivi par l’Aide sociale à l’enfance représente 2 à 3%de la population française, alors que le devenir de ces personnes est décrit par la littérature comme étant de mauvaise qualité (attachement insecure, troubles psychiatriques, précarité…), cette population ne suscite qu’un faible intérêt de la recherche scientifique. Afin d’appréhender cet objet complexe de recherche qu’est la protection de l’enfant/l’ancien placé, nous avons mis en place une étude sur le devenir, à l’âge adulte, d’enfants ayant vécu en accueil familial thérapeutique. Cette étude associe analyse du discours selon un outil de recherche de la narrativité – l’Edicode –, et une méthode d’analyse qualitative – la théorisation ancrée. Nos résultats montrent dans les situations associées à un attachement insecure, une narrativité comparable avec celle retrouvée chez les personnes ayant vécu des traumatismes à répétition. De plus, les 33 participants ont nommé l’importance d’un entretien bilan/point étape après le suivi fait par l’ASE. Ces résultats qualitatifs confirment les données de la littérature sur l’importance d’un accompagnement post-ASE entre 18 et 25 ans pour tous les mineurs suivis.
La fin de la France chrétienne ?
Authors: Nouailhat René
Published: April 2021

Guillaume Cuchet a publié aux éditions du Seuil en 2018 « Comment notre monde a cessé d’être chrétien » dans lequel il analyse ce qu’il appelle l’anatomie d’un effondrement. à partir de la lecture de cet ouvrage l’auteur de l’article rappelle le cheminement du christianisme en France depuis l’après-guerre et les circonstances du déclin de l’église catholique.
Clinical Compass: Guiding the Relationship Between Clinical and Didactic Learning
Authors: Lambert Shari Lee , Kwasky Andrea N. , Kowalski Sonya L. , McConnell Sherry , Ciotta Barbara J.
Published: May 2021

Background:

Evidence demonstrates there is a need for innovation and further investigation on how to best prepare nursing students for practice. A consistent framework is necessary to guide students, theory faculty, and clinical instructors.

Method:

A tool was created to transform the student learning experience. This tool, the Clinical Compass, provides opportunity to better integrate didactic knowledge within the clinical experience. The tool was evaluated by creating a questionnaire for both students and faculty.

Results:

Survey data were collected from both student and instructor groups via an anonymous electronic survey. Both student and instructor surveys yielded positive results reflecting improved connection between theoretical and clinical knowledge.

Conclusion:

Data support continued use and ongoing revisions of the Clinical Compass tool. The tool will be adapted for use in the classroom, specialty areas, and virtual and simulation environments.

[
J Nurs Educ
. 2021;60(5):286–288.]

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Acute soft head syndrome in a sickle cell disease patient
Authors: Zadeh Catherina , Rameh Vanessa , Atweh Lamya Ann
Published: April 2021

Acute soft head syndrome is an extremely rare complication in children with sickle cell anemia. We present a 16-year old male patient known to have sickle cell anemia who presented to our emergency department with low grade fever, headache, skull pain and swelling. Magnetic Resonance of the brain was done demonstrating subgaleal collections overlying calvarial signal abnormalities. The combination of clinical and radiological findings were indicative of acute soft head syndrome. Acute soft head syndrome is a rare complication in children with sickle cell anemia and the pathophysiology is related to osteonecrosis and bone infarcts of the calvarium as well as secondary reactive sub-galeal collections. Treatment includes conservative management with intravenous fluids and analgesics, in addition, our patient was treated with antibiotics since differentiation clinically and by imaging can be challenging. Acute soft head syndrome should be considered in the differential diagnosis of headache and skull swelling in children with sickle cell anemia.
Nash Equilibria on (Un)Stable Networks
Authors: Badev Anton
Published: May 2021

In response to a change, individuals may choose to follow the responses of their friends or, alternatively, to change their friends. To model these decisions, consider a game where players choose their behaviors and friendships. In equilibrium, players internalize the need for consensus in forming friendships and choose their optimal strategies on subsets of
k players—a form of bounded rationality. The
k‐player consensual dynamic delivers a probabilistic ranking of a game's equilibria, and via a varying
k, facilitates estimation of such games.

Applying the model to adolescents' smoking suggests that: (a) the response of the friendship network to changes in tobacco price amplifies the intended effect of price changes on smoking, (b) racial desegregation of high schools decreases the overall smoking prevalence, (c) peer effect complementarities are substantially stronger between smokers compared to between nonsmokers.
Salvaging Falsified Instrumental Variable Models
Authors: Masten Matthew A. , Poirier Alexandre
Published: May 2021

What should researchers do when their baseline model is falsified? We recommend reporting the set of parameters that are consistent with minimally nonfalsified models. We call this thefalsification adaptive set(FAS). This set generalizes the standard baseline estimand to account for possible falsification. Importantly, it does not require the researcher to select or calibrate sensitivity parameters. In the classical linear IV model with multiple instruments, we show that the FAS has a simple closed‐form expression that only depends on a few 2SLS coefficients. We apply our results to an empirical study of roads and trade. We show how the FAS complements traditional overidentification tests by summarizing the variation in estimates obtained from alternative nonfalsified models.
Limit Points of Endogenous Misspecified Learning
Authors: Fudenberg Drew , Lanzani Giacomo , Strack Philipp
Published: May 2021

We study how an agent learns from endogenous data when their prior belief is misspecified. We show that only
uniform Berk–Nash equilibria can be long‐run outcomes, and that all
uniformly strict Berk–Nash equilibria have an arbitrarily high probability of being the long‐run outcome for some initial beliefs. When the agent believes the outcome distribution is exogenous, every uniformly strict Berk–Nash equilibrium has positive probability of being the long‐run outcome for any initial belief. We generalize these results to settings where the agent observes a signal before acting.
Costly miscalibration
Authors: Guo Yingni , Shmaya Eran
Published: May 2021

We consider a platform that provides probabilistic forecasts to a customer using some algorithm. We introduce a concept of miscalibration, which measures the discrepancy between the forecast and the truth. We characterize the platform's optimal equilibrium when it incurs some cost for miscalibration, and show how this equilibrium depends on the miscalibration cost: when the miscalibration cost is low, the platform uses more distant forecasts and the customer is less responsive to the platform's forecast; when the miscalibration cost is high, the platform can achieve its commitment payoff in an equilibrium and the only extensive‐form rationalizable strategy of the platform is its strategy in the commitment solution. Our results show that miscalibration cost is a proxy for the degree of the platform's commitment power and, thus, provide a microfoundation for the commitment solution.
Communication with forgetful liars
Authors: Jehiel Philippe
Published: May 2021

I consider multiround cheap talk communication environments in which, after a lie, the informed party has no memory of the content of the lie. I characterize the equilibria with forgetful liars in such settings assuming that a liar's expectation about his past lie coincides with the equilibrium distribution of lies aggregated over all possible realizations of the states. The approach is used to shed light on when the full truth is almost surely elicited, and when multiple lies can arise in equilibrium. Elaborations are proposed to shed light on why nontrivial communication protocols are used in criminal investigations.
La « tombe de la Princesse » de Tell Kashkashok III (Syrie du Nord-Est)
Authors: Suleiman † Antoine , Quenet Philippe
Published: April 2021

Tell Kashkashok III (Syrie du Nord-Est) fut fouillé par une mission syrienne de 1986 à 1991. Une mission d’étude du riche matériel mis au jour a eu lieu au début des années 2000. Le site, entre autres vestiges, a livré une tombe exceptionnelle que le fouilleur a appelée la « tombe de la Princesse ». Son mobilier funéraire est présenté ici. Les éléments de comparaison disponibles invitent à dater cette sépulture d’une période encore peu représentée en Syrie du Nord-Est, le Jezireh Archaïque 1.
L’épigramme grecque du tombeau de Maiorinus à Buṣr al-Ḥarīri (Syrie du Sud) Poésie funéraire et prosopographie dans la province romaine d’Arabie
Authors: Aliquot Julien
Published: April 2021

Les deux célèbres épitaphes métriques gravées sur le tombeau du sénateur romain Maiorinus à Buṣr al-Ḥarīri, dans le sud de la Syrie actuelle, ont été reprises en 2014 dans le quinzième tome des Inscriptions grecques et latines de la Syrie (IGLS), consacré au plateau du Trachôn. Ces documents sont ici republiés et commentés à la lueur d’une nouvelle lecture de l’épigramme grecque, selon laquelle le défunt serait le parent ou le collègue d’un certain « Kertos, très fidèle aux empereurs et irréprochable ». Tout comme Maiorinus, qui a fini sa carrière comme préfet du prétoire en Orient, Kertos (Certus) se révèle ainsi avoir été un haut fonctionnaire de l’État romain, qui a servi sous le règne de plusieurs empereurs dans la première moitié du ive siècle après J.‑C., sans doute Constantin et Constance II. Le même homme semble également mentionné dans l’épigramme funéraire d’un juriste de Kolybrassos, en Pamphylie. D’après ce poème, il a pu occuper dans l’administration civile un poste supérieur à celui d’un gouverneur provincial, peut-être celui de comte d’Orient. L’étude de son parcours et de ses réseaux laisse entrevoir l’ascension sociale et politique d’une famille de notables originaire du nord de la province romaine d’Arabie dans l’Antiquité tardive.
The Perspective of Black Women Watching Crises at a Standstill
Authors: Garner Mesha , Williams Kalyanna T.
Published: May 2021

In this chapter, the authors discuss the effects of working from home amid two pandemics. The Coronavirus (COVID-19) struck hard in March 2020, shifting what we know as higher education and magnified racial and income disparities in America. Higher education institutions quickly decided to close their doors to hundreds of thousands of students and send them home to their families across the country. Students, faculty, and administrators alike all scrambled to persevere and complete the Spring 2020 semester. Simultaneously, the untimely and gruesome murders of George Floyd, Ahmaud Abury, and Breonna Taylor were watched in real-time and magnified racial tensions and violence in America. The authors use anti-Black womanism to introduce the tale of two professionals who work in higher education. This chapter aims to detail the experience of working in higher education while being Black women professionals during two pandemics. Throughout this chapter, they have the goal to share narratives of being Black women professionals.
Revitalizing Blended and Self-Directed Learning Among Adult Learners Through the Distance Education Mode of Learning in Ghana
Authors: Biney Isaac Kofi
Published: May 2021

Higher education institutions (HEIs) are witnessing increasing participation of non-traditional learners, learning by distance education (DE) mode. Blended learning (BL) strategy is adapted to create opportunities for adult learners to improve knowledge, skills, and intellectual capacities to impact, among others, productivity at workplace. This chapter explores the use of technology to conceptualize BL and self-directed learning (SDL). It discussed blended learning as practiced in the global north and the global south. It examined SDL and focused attention on blended learning as practiced in HEIs, using University of Ghana as a case study. It identified issues involved in blended learning and mapped up solutions in revitalizing self-directed learning culture among the young adults in Ghana. The chapter concludes that the state-of-the-art computer laboratories which power the Sakai LMS should be refurbished and retooled to deepen BL and SDL culture among adult learners in Ghana.
What Urban Nightlife Feels Like
Authors: Oznobikhina Irina Igorevna
Published: May 2021

The chapter focuses on the various-level experience of space of urban nightlife applying the concept of atmospheres and uncovering the mutual dependence between atmosphere and place to examine the influence of technological progress drawing to the cases of two cities: Moscow and Copenhagen. It also aims to analyse the controversial issue of the collective perception of atmospheres within the urban culture of nightlife and explore the interaffective characteristics of different locations, mainly clubs, turning to musical nostalgia as an illustrating example.
Enhancing Social Engagement Through Nightscape in Qaitbay Promenade in Alexandria, Egypt
Authors: Faragallah Riham Nady
Published: May 2021

The design of nighttime environments is of a demanding importance to the social engagement and cultural vitality of any city as it strengthens the feeling of functionality, safety, and enjoyment at night. Currently, the topic of nightscape is commonly spread because it affects urban spaces in several ways. The literature indicates the crucial factor in allowing to carry out the daytime activities and partially eliminating the dangers of night darkness. On the local scale, the results strengthen a common observation that Qaitbay promenade in Alexandria, Egypt is not sensitive to nightscape and lacks social engagement. Notably, in the nightlife, urban promenades in cities utilize all human senses in different techniques incorporating vision with the spirit of social engagement of the surrounding. The chapter concludes a proposed framework for visual nightscape attributes and social engagement approaches to enhance the tourism experience in the area.
Billboards, Smartness, and Nightlife Atmospheres in Old Cairo
Authors: Elshater Abeer , Abusaada Hisham
Published: May 2021

This chapter explores the random configurations of lighting elements of billboards and outdoor screens in historical public spaces. This chapter built a theoretical base on a systematic review of research indexed in Web of Science (WOS) as hot topics and highly cited in the field published in the last five years. Reflecting on the case of Old Cairo, the argument distinguishes between the three concepts of smartness—smart city, smart community, and smart places—and identifies the differences between conventional places and smart technology. The change in urban nightlife atmospheres and the loss of belonging are the main findings of systematic research for how to reconstruct nightlife atmospheres to enhance belonging in public spaces in Cairo's old districts. A critique of the transformation of nightlife atmospheres in public spaces of historic significance is offered due to the random use of technological elements, whether implemented by local authorities or residents. Findings also have implications for urban planning and design guidelines.
Using GIS in Disaster Response Operations
Authors: Yilmaz Zafer
Published: May 2021

Earthquakes come first compared with other disasters concerning casualties and economic losses. Thousands of people need heath and logistic support after earthquakes. Therefore, legal authorities focus on finding best locations for logistics depots to reach the demand points as soon as possible. Linear and non-linear models are used to find depot locations. In this study, alternatively, geographic information system (GIS) is used to find the optimal locations of depots among candidates. A new model is introduced which cover the earthquake effects while estimating the vehicle speeds on road segments. Optimal locations of depots are found both with and without including the earthquake effects on vehicle speeds and travel times on the road segments in order to compare the results. A case study is applied for Bahçelievler town in Istanbul. Three depot locations are found among 21 candidate locations (facilities) for 62 estimated demand points. The results show that the depot locations are not necessarily the same whether the earthquake effects on travel times are included or not.
Smart Irrigation System for Crop Farmers in Namibia
Authors: Limbo Anton , Suresh Nalina , Ndakolute Set-Sakeus , Hashiyana Valerianus , Haiduwa Titus , Ujakpa Martin Mabeifam
Published: May 2021

Farmers in Namibia currently operate their irrigation systems manually, and this seems to increase labor and regular attention, especially for large farms. With technological advancements, the use of automated irrigation could allow farmers to manage irrigation based on a certain crops' water requirements. This chapter looks at the design and development of a smart irrigation system using IoT. The conceptual design of the system contains monitoring stations placed across the field, equipped with soil moisture sensors and water pumps to maintain the adequate moisture level in the soil for the particular crop being farmed. The design is implemented using an Arduino microcontroller connected to a soil moisture sensor, a relay to control the water pump, as well as a GSM module to send data to a remote server. The remote server is used to represent data on the level of moisture in the soil to the farmers, based on the readings from the monitoring station.
Women Principals' Career Paths
Authors: Kıral Bilgen
Published: May 2021

The managerial career has always been perceived as a man's realm, but this perception is changing. It is the same for schools like other organizations. The number of women principals is increasing, and perceptions are changing in a way that women can also take up such positions. However, women teachers face more difficulties and barriers compared to men when they take up an administrative career. This chapter looks into the career planning and pre-career process of women school principals, their stages of the career development, the barriers and difficulties they encounter during the career development, and the strategies they employ to cope with them within the framework of the career construction theory.
Bahraini Women in PR Managerial Positions
Authors: AlSaqer Layla , Al-Rashed Maha
Published: May 2021

This chapter addresses the gap in the literature on the experience of women who are holding managerial positions in public relations in the non-Western society of Bahrain. This research attempts to provide a unique contribution to PR scholarship by using a qualitative approach to study the experience of Bahraini female leaders working in public relations. The chapter introduces the progression enjoyed by women in the kingdom of Bahrain today, in parallel to the social, cultural, and political developments enjoyed by this country. The appointment of women to managerial positions in Bahrain over the past years has ushered in a significant departure from the traditionally exclusive, male-dominated decision-making arena. The research suggests combined liberal and radical feminist strategies to improve the role of female managers in public relations in the cultural context of Bahrain. Moreover, new legislative and educational development facilitates promising opportunities for the progress of female PR practitioners in managerial positions in Bahrain.
Women Leaders in Higher Education
Authors: Ellington Linda
Published: May 2021

An interesting inquiry is whether women leaders are desiring, dismissing, or being disqualified from senior leadership positions in the global K-20 educational academy. Why is there a leadership underrepresentation of those born female? It may be that women leaders have not been socialized in accordance with the male-centric leadership model; they are relatively outsiders who must forge new ways of leading. This chapter's author embarked on a small literature search of history to identify what is not new to us, but possibly forgotten – the experiences and lessons learned from women leaders who met challenges through their bold and effective leadership, as they forged paths for us. There is a feeling of belonging to the past, but not fully understanding it. There is a sense of having acquired a pressing but obscure responsibility, along with a peculiar female ancestry, for us to be the twenty-first century generation in a long line of uncommon women. The insights in this chapter are presented through a simple folktale, asking the question, Where is Walda?
Gender and Trade Unionism Advancing Female Participation and Representation in the Nigerian Context
Authors: Tinuoye Adekunle Theophilius , Ogharanduku Victor Ikechukwu , Egbanubi Martin Adekunle , Ogar Joseph A.
Published: May 2021

Trade unionism is a major part of modern workplaces. It forms the basis for peaceful relations and consensus building to attain mutual goals. At the heart of trade unionism is social justice and equality, which affirms the rights of all employees regardless of gender to enjoy freedom of association and accessibility, etc. Socio-cultural exigencies have made women to face tough challenges and discriminatory treatment at work, resulting in fewer rights and liberties and leading to economic and psychological stress. The World Bank noted that the starting point is the recognition that women are disadvantaged in most indicators at work—earnings, quality of employment, participation. Trade unions are central to protecting the interests of workers, and building strong unions can foster the elimination of discrimination at work. This chapter shall proffer actionable strategies and issue-based outlines that would advance the cause of gender equality, address the lopsided power configuration between the genders at work, and engender women's participation.
Interaction of Nucleic Acids
Authors: Zhizhin Gennadiy Vladimirovich
Published: May 2021

The author examines a polytopic of hereditary information presented earlier by the author as area of interaction of nucleic acids in vicinity of each pair of nitrogenic bases. It is shown that in the space of the polytope of hereditary information of dimension 13, only five coordinate planes are possible in which each of the flat pairs of nitrogenous bases can be located. This leads to a coordination of the number of canonic nucleotides and the number of amino acids without the need for a genetic code.
Spatial Models of Sugars and Their Compounds
Authors: Zhizhin Gennadiy Vladimirovich
Published: May 2021

The images of saccharide and polysaccharide molecules in spaces of various dimensions are considered. A method has been developed for obtaining simplified three-dimensional images of sugar molecules and their chains based on their images in spaces of higher dimensions. It was found that three-dimensional images of furanose and pyranose molecules fundamentally differ from each other to form convex and, accordingly, non-convex bodies. This leads to fundamental differences in the structure of polysaccharides from these molecules.
Brain Interface
Authors: Galiautdinov Rinat
Published: May 2021

In the article, the author provides the method based on the nano-scaled brain interface which allows to improve the concentration during the learning process. The method may be actively used in the future along with the brain interface and can be applied to the avatar concept in the frame of education. The article considers how activity of the different areas of the brain effects on the learning process and how the learning process can be improved by suppressing the areas of the brain which are not supposed to be active during the learning of a specified study course.
The Impact of Services Quality Factors on Improving Actual Used for Mobile Application
Authors: Alhawari Samer , Shawabkeh Khaled Mahmoud Al.
Published: May 2021

Banks argue that the services quality (SQ) and customer engagement (CE) need to embrace mobile applications(m-apps) like any other significant business asset in the bank. In order to succeed, banks need to improve customers' actual usage (AU) of m-apps. This study proposes a model to identify SQ factors that contribute to the CE for improving AU for m-apps. It examined the direct and indirect impacts of SQ and CE on improving AU for m-apps. Simple random sampling was used with customers who had used m-apps as questionnaire respondents (total N=369). All hypotheses were tested using (PLS-SEM). Data collection from a questionnaire of 369 customers from 13 Jordanian commercial banks was used to examine the research model. The results of the study indicate that CE has a significant and direct impact and partially mediates between factors of SQ, namely content, responsiveness, ease of use, and perceived usefulness on improving AU for m-apps. Moreover, this study suggested that, if banks intend to promote their SQ and CE, they must continuously improve their AU for m-apps.
Application of Desktop Computing Technology Based on Cloud Computing
Authors: Zhang Kai
Published: May 2021

With the development of internet technology and computer technology, in order to solve the big data problem in the new era, cloud computing has emerged at the historic moment. Desktop virtualization, as an important application of cloud computing, has experienced unprecedented development. Although traditional virtual desktop solutions can solve the problem of PCs, they cannot be used for centralized distributed cluster deployment, and they mostly rely on the underlying virtualization technology. The dynamic management of virtual machines is mainly to take into account the goals of QoS, resource utilization balance, and power under the premise of ensuring the user experience, the maximum guarantee of the balance of host resource utilization, and the reduction of power consumption of the entire system. The results show that by deploying a test desktop virtualization system, this article reduces the power consumption of host resources, reduces the SLA violation rate (improves the user experience), and improves the balance of host resource utilization.
Application Research of Speech Signal Processing Technology Based on Cloud Computing Platform
Authors: Zhang Hongbing
Published: May 2021

In recent years, in the context of the rapid development of information technology, artificial intelligence has also developed. People have begun to train machines. Many machines have been able to gradually understand human languagesand perform a series of actions based on language instructions. On this basis, scientific researchers hope that the machine can be more intelligent and humane. In the noise estimation stage, a noise estimation algorithm based on speech detection is used to effectively estimate the noise. Secondly, according to the characteristics of the method of speech noise reduction processing, a method of processing speech noise is realized. Finally, simulation experiments are used to illustrate the effectiveness of the algorithm. Aiming at the shortcomings of traditional speech noise reduction algorithms, improvements were made in adaptive filter estimation. The model's speech noise reduction algorithm was obtained. The cepstrum estimation of speech signals was modified, and the effect of speech enhancement was significantly improved.
Impact of Project Management on Project Success at Engineering Firms in Kuwait
Authors: Alasfour Fatimah Soud , Mirzal Andri
Published: May 2021

The aim of the study is to assess the relationship between project management (PM) practices and project success (PS) criteria in engineering firms in Kuwait. As a first step, a comprehensive literature review followed by interviews with CEOs from 10 selected firms and consultations with three experts were conducted to design the research framework. As a result, a research model that consists of PM practices measured by six dimensions (leadership, IT, teamwork, planning, governance, and communication) and PS criteria measured by three dimensions (impact on customers, impact on project team, and business success) were instilled. Based on statistical analysis on the survey responses, it was found that communication and teamwork are the strongest predictors for PS criteria, and other PM dimensions were perceived to be less important. This result is encouraging and comforting as it shows that the team-oriented factors are perceived to be important in the success of projects and implies that having a cohesive team is crucial for managing successful projects.
Job-Seeker Reactions to Rejection Emails
Authors: Eveleth Daniel M. , Eveleth Hayley
Published: May 2021

The authors examined participant reactions to rejection emails. Those participants who evaluated emails that provided information in an interpersonally-sensitive manner with an opportunity for future interaction reported significantly higher attitudes toward the recruiter than did those who evaluated emails that were low in information sensitivity and interactivity. In addition, the effect of email type on word-of-mouth intentions toward the company was mediated by participant attitudes toward the recruiter. These results provide implications for organizations that are focusing on the efficiency-oriented benefits of using applicant tracking system at the expense of job-seekers' reactions and for individual recruiters who may be concerned about the effect of organization practices on their professional brand.
Investigating Educators' Intention to Adopt M-Learning
Authors: Negra Anissa , M'sallem Wafa , Mzoughi Mohamed Nabil
Published: May 2021

The technological spread has brought business schools in Arab countries into the m-learning age. Teachers represent one of the most important pillars of the ubiquitous learning implementation. This research aims to examine educators' intention of m-learning adoption based on the TAM, dispositional resistance to change (RTC), and perceived playfulness. One hundred seventy-nine educators from business schools in Tunisia and Saudi Arabia answered the survey. Results revealed that playfulness is the most predictor of the educators' intention adoption of m-learning in both cultures. Cluster analysis has revealed three different profiles of educators in business schools: opposing, averse, and pioneers.
Developing ESL Writing Content Through Online Discussions on WhatsApp
Authors: Haron Haeza , Kasuma Shaidatul Akma Adi , Akhiar Ayuni
Published: May 2021

This study uses WhatsApp to facilitate online discussions in developing content idea for ESL writing. A quasi-experimental study was conducted with 33 pre-university students participating in online discussions on WhatsApp for five weeks to support face-to-face instructions. Pre-test, post-test, and five weekly writing tests were administered, examined, and analysed to identify the participants' writing performance. The findings show significant improvement in the experimental group's essay writing scores after using WhatsApp for online discussions. The participants were able to use the content generated from the MWEG in supporting the arguments in their essays. Besides content idea development, the experimental group saw the WhatsApp online discussions as boosting confidence, raising motivation, and encouraging interactions among students. The themes that emerged from the WhatsApp group interaction were lively discussions, sharing of opinions, and turn-taking. While the control group also improved in their test scores, it was not as significant as the experimental group.
Organic Matter Decomposition and Nutrient Release from Different Dhaincha (Sesbania spp.) Genotypes
Authors: Chanda Sontosh Chandra , Islam Md. Rafiqul , Sarwar A.K.M. Golam
Published: May 2021

Purpose: An experiment was conducted at Field Laboratory of the Department of Crop Botany, Bangladesh Agricultural University during April to July 2018 to compare the biomass yield potential, decomposition and nutrients release pattern of different dhaincha genotypes.Research Method: Six dhaincha accessions from three Sesbania species, viz. S. bispinosa (accession #05, 71, 77 and 109), S. cannabina (accession #28) and S. sesbsan (accession #81), were used as experimental materials. Dhaincha was cultivated with standard cultivation procedure following a randomized complete block design with three replications and incorporated with soil at 60 days after sowing.Findings: There are wide variations in biomass yield, crude fi bre and crude protein among the accessions. The amount of crude fibre may be used as a descriptor of taxonomic importance. Accession #28 (S. cannabina) produced a significantly higher amount of crude fibre compared to other accessions. Soil organic matter (SOM) and nutrient elements availability increased with the period of time and reached to a peak at 50 days after biomass incorporation (DAI) except K and S. The highest amount of SOM and N was recorded in accession #71 and the lowest in accession #81. The maximum amount of phosphorus and potassium was added by accession #05 and the minimum phosphorus and potassium by accession #28 and #81, respectively. The greatest amount of sulfur showed 5.25 ppm in accession #05 at 20 DAI and the smallest value 2.22 ppm in accession #28 at 60 DAI.Originality: It is evident from results that accession #71 can be recommended for cultivation in the farmer’s field for higher biomass yield and the maximum amount of nutrients release.
Acute Pain Services during Covid-19: Challenges and solutions
Authors: Dey Samarjit , Malik Sunny
Published: April 2021

No abstract available
G3BP1 Inhibition Alleviates Intracellular Nucleic Acid–Induced Autoimmune Responses
Authors: Cai Hong , Liu Xin , Zhang Feng , Han Qiu-Ying , Liu Zhao-Shan , Xue Wen , Guo Zeng-Lin , Zhao Jiang-Man , Sun Li-Ming , Wang Na , Mao Jie , He Kun , Xia Tian , Chen Yuan , Chen Liang , Li Ai-Ling , Zhou Tao , Zhang Xue-Min , Li Wei-Hua , Li Tao
Published: May 2021

The detection of intracellular nucleic acids is a fundamental mechanism of host defense against infections. The dysregulated nucleic acid sensing, however, is a major cause for a number of autoimmune diseases. In this study, we report that GTPase-activating protein SH3 domain-binding protein 1 (G3BP1) is critical for both intracellular DNA- and RNA-induced immune responses. We found that in both human and mouse cells, the deletion of G3BP1 led to the dampened cGAS activation by DNA and the insufficient binding of RNA by RIG-I. We further found that resveratrol (RSVL), a natural compound found in grape skin, suppressed both intracellular DNA- and RNA-induced type I IFN production through inhibiting G3BP1. Importantly, using experimental mouse models for Aicardi–Goutières syndrome, an autoimmune disorder found in humans, we demonstrated that RSVL effectively alleviated intracellular nucleic acid–stimulated autoimmune responses. Thus, our study demonstrated a broader role of G3BP1 in sensing different kinds of intracellular nucleic acids and presented RSVL as a potential treatment for autoimmune conditions caused by dysregulated nucleic acid sensing.
Transglutaminase 2 Regulates Innate Immunity by Modulating the STING/TBK1/IRF3 Axis
Authors: Occhigrossi Luca , Rossin Federica , D’Eletto Manuela , Farrace Maria Grazia , Ciccosanti Fabiola , Petrone Linda , Sacchi Alessandra , Nardacci Roberta , Falasca Laura , Del Nonno Franca , Palucci Ivana , Smirnov Evgeni , Barlev Nick , Agrati Chiara , Goletti Delia , Delogu Giovanni , Fimia Gian Maria , Piacentini Mauro
Published: May 2021

We have recently shown that type 2 transglutaminase (TG2) plays a key role in the host’s inflammatory response during bacterial infections. In this study, we investigated whether the enzyme is involved in the regulation of the STING pathway, which is the main signaling activated in the presence of both self- and pathogen DNA in the cytoplasm, leading to type I IFN (IFN I) production. In this study, we demonstrated that TG2 negatively regulates STING signaling by impairing IRF3 phosphorylation in bone marrow–derived macrophages, isolated from wild-type and TG2 knockout mice. In the absence of TG2, we found an increase in the IFN-β production and in the downstream JAK/STAT pathway activation. Interestingly, proteomic analysis revealed that TG2 interacts with TBK1, affecting its interactome composition. Indeed, TG2 ablation facilitates the TBK1–IRF3 interaction, thus indicating that the enzyme plays a negative regulatory effect on IRF3 recruitment in the STING/TBK1 complex. In keeping with these findings, we observed an increase in the IFNβ production in bronchoalveolar lavage fluids from COVID-19–positive dead patients paralleled by a dramatic decrease of the TG2 expression in the lung pneumocytes. Taken together, these results suggest that TG2 plays a negative regulation on the IFN-β production associated with the innate immunity response to the cytosolic presence of both self- and pathogen DNA.
MYO1F Regulates IgE and MRGPRX2-Dependent Mast Cell Exocytosis
Authors: Navinés-Ferrer Arnau , Ainsua-Enrich Erola , Serrano-Candelas Eva , Proaño-Pérez Elizabeth , Muñoz-Cano Rosa , Gastaminza Gabriel , Olivera Ana , Martin Margarita
Published: May 2021

The activation and degranulation of mast cells is critical in the pathogenesis of allergic inflammation and modulation of inflammation. Recently, we demonstrated that the unconventional long-tailed myosin, MYO1F, localizes with cortical F-actin and mediates adhesion and migration of mast cells. In this study, we show that knockdown of MYO1F by short hairpin RNA reduces human mast cell degranulation induced by both IgE crosslinking and by stimulation of the Mas-related G protein–coupled receptor X2 (MRGPRX2), which has been associated with allergic and pseudoallergic drug reactions, respectively. Defective degranulation was accompanied by a reduced reassembly of the cortical actin ring after activation but reversed by inhibition of actin polymerization. Our data show that MYO1F is required for full Cdc42 GTPase activation, a critical step in exocytosis. Furthermore, MYO1F knockdown resulted in less granule localization in the cell membrane and fewer fissioned mitochondria along with deficient mitochondria translocation to exocytic sites. Consistent with that, AKT and DRP1 phosphorylation are diminished in MYO1F knockdown cells. Altogether, our data point to MYO1F as an important regulator of mast cell degranulation by contributing to the dynamics of the cortical actin ring and the distribution of both the secretory granules and mitochondria.
Cutting Edge: TCR-β Selection Is Required at the CD4+CD8+ Stage of Human T Cell Development
Authors: Chen Edward L. Y. , Brauer Patrick M. , Martinez Elisa C. , Huang Xiaotian , Yu Ning , Anderson Michele K. , Li Yang , Zúñiga-Pflücker Juan Carlos
Published: May 2021

T cell development is predicated on the successful rearrangement of the TCR gene loci, which encode for Ag-specific receptors. Recombination-activating gene (RAG) 2 is required for TCR gene rearrangements, which occur during specific stages of T cell development. In this study, we differentiated human pluripotent stem cells with a CRISPR/Cas9-directed deletion of the RAG2 gene (RAG2-KO) to elucidate the requirement for the TCR β-chain in mediating β-selection during human T cell development. In stark contrast to mice, human RAG2-KO T lineage progenitors progressed to the CD4+CD8+ double-positive (DP) stage in the absence of TCRβ rearrangements. Nonetheless, RAG2-KO DPs retrovirally transduced to express a rearranged TCR β-chain showed increased survival and proliferation as compared with control-transduced RAG2-KO DPs. Furthermore, transcriptomic analysis showed that TCRβ- and control-transduced RAG2-KO DPs differed in gene pathways related to survival and proliferation. Our results provide important insights as to the distinct requirement for the TCR β-chain during human T cell development.
Total phenolic and flavonoids contents and in vitro evaluation of antioxidant activity of several Calendula officinalis (Marigold) extracts
Authors: Chroho Mounia , Drioiche Aziz , Saidi Soukaina , Zair Touriya , Bouissane Latifa
Published: May 2021

The search for natural antioxidants to replace synthetic antioxidants is one of humanity’s health priorities. Medicinal and Aromatic Plants (MAP) contain phenolic compounds that act as natural antioxidants. The aim of this work is to study total phenols and flavonoids contents and evaluate the antioxidant power of various extracts of Calendula officinalis. Extracts were prepared in two steps: hot solid-liquid extraction, by Soxhlet and from the plant powder using a solvent (Methanol/water 70/30, Acetone/water 70/30) followed by a liquid-liquid extraction by splitting the obtained extract by two increasingly polarized solvents (Ethyl acetate and Butanol). Total phenols and flavonoids were evaluated using gallic acid and quercetin as standards, respectively. The antioxidant activity of extracts was determined by DPPH (2,2-diphényl 1-picrylhydrazyle) free radical reduction method. The two crude fractions of Methanol and Acetone presented the highest levels of total phenols (7,58±0,38 mg GAE/g dm and 6,80±0,34 mg GAE/g dm respectively), and flavonoids (7,37±0,37 mg QE/g dm and 7,93±0,40 mg QE/g dm respectively). Ethyl acetate fractions showed a high antioxidant activity. This study demonstrated that extracts from Calendula officinalis flowers present a promising source of natural antioxidant.
Neuromuscular blockade management in patients with COVID-19
Authors: Chaves-Cardona Harold , Hernandez-Torres Vivian , Kiley Sean , Renew Johnathan
Published: May 2021

This narrative review evaluates the evidence for using neuromuscular blocking agents (NMBA) in patients being treated for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). While large prospective randomized-controlled trials (RCTs) are lacking at this point in time, smaller observational studies and case series are reviewed to ascertain the indications and utility of NMBAs. Additionally, large RCTs that address similar clinical scenarios are reviewed and the authors translate these findings to patients with COVID-19. Specifically, NMBAs can be helpful during endotracheal intubation to minimize the risk of patient coughing and possibly infecting healthcare personnel. NMBAs can also be used in patients to promote patient-ventilator synchrony while reducing the driving pressure needed with mechanical ventilation (MV), particularly in patients with the severe clinical presentation (Type H phenotype). Prone positioning has also become a cornerstone in managing refractory hypoxemia in patients with SARS-CoV-2 acute respiratory distress syndrome (ARDS), and NMBAs can be useful in facilitating this maneuver. In the perioperative setting, deep levels of neuromuscular blockade can improve patient outcomes during laparoscopic operations and may theoretically reduce the risk of aerosolization as lower insufflation pressures may be utilized. Regardless of the indication, quantitative neuromuscular monitoring remains the only reliable method to confirm adequate recovery following cessation of neuromuscular blockade. Such monitors may serve a unique purpose in patients with COVID-19 as automation of measurements can reduce healthcare personnel-patient contact that would occur during periodic subjective evaluation with a peripheral nerve stimulator.