bluuebunny/crossref_metadata_2025 huggingface dataset:
À la rencontre des espaces halieutiques sur le littoral camerounais : comparaison entre les régions Littoral et Sud côtier
Authors: Mbock Nemba Audry Constant , De La Croix Kevin , Tomedi-Tabi Eyango Minette , David Gilbert
Published: April 2022

La thématique développée dans ce présent article appréhende l’espace halieutique sur le littoral camerounais partant d’un préalable analytique de différents éléments interconnectés qui constituent le système Pêche ou Halieutique. Elle présente par la suite les différentes formes de constructions de l’espace halieutique, et pose une analyse sur la pérennisation de l’activité de pêche artisanale face à l’essor de nouvelles contraintes industrielles et transformations spatiales des sociétés de pêcheurs. La plurifonctionnalité de l’espace littoral donne dans ce document toute l’importance de l’implication des approches géographiques. Ces méthodes concourent à une meilleure compréhension des dynamiques d’acteurs endogènes et exogènes qui composent les différents systèmes Pêche des régions côtières du Littoral et Sud Cameroun.
Resserrer les liens : approche systémique et désinstitutionalisation
Authors: Soria Delphine
Published: April 2022

Cet article aborde une des manières possibles de construire le travail avec les familles au sein d’une institution accueillant des adolescents. Dans le processus actuel de désinstitutionalisation, l’approche systémique peut-elle être un recours, tant pour les usagers que pour les professionnels ?
Groupe Parole pour Adolescents : un espace relationnel et créatif dans une institution de soins pédopsychiatriques
Authors: Ramsis Nadia
Published: April 2022

Dans cet article, l’auteur présente une expérience clinique de mise en place d’un atelier Groupe Parole d’orientation systémique au sein d’une institution pédopsychiatrique hospitalière à Bruxelles. Elle y développe le cadre institutionnel, le concept de Groupe Parole et ses fonctions, et présente également des outils pratiques facilitant l’expression de la créativité et la parole des adolescents hospitalisés.
Soigner nos liens pour soigner le lien : Du lion au singe en passant par la licorne…
Authors: Kaisin Patrick , Ameye Sarah , Boucau Valérie , Lallemand Bernadette , Noël Camille , Pirlot Vanessa , Van Ypersele David , Lempereur Emmanuelle
Published: April 2022

Les dernières années ont vu se multiplier le recours au terme « incasable » pour qualifier une certaine catégorie de jeunes qui épuisent les institutions et sont ballotés de l’une à l’autre. À partir d’une présentation du parcours de vie et de l’hospitalisation d’une jeune fille de 10 ans présentant un attachement insécure désorganisé et des symptômes de dissociation post-traumatique, l’article explore les éléments qui ont soutenu sa prise en charge. Parmi ceux-ci, l’accent est particulièrement mis sur l’importance de diffracter les liens et les relations transférentielles, à la fois dans l’unité de soin, dans l’institution de soin et entre celles-ci et les partenaires du réseau de la jeune. Le rôle et l’utilisation de certains objets ainsi qu’un modèle de prise en charge en co-thérapie par une psychologue et une kinésithérapeute sont proposés. Enfin, l’article présente le témoignage de la jeune recueilli sous la forme d’un jeu de sable.
Nous ne savons pas et c’est notre chance !
Authors: Verbist Yolande , Pietquin Thomas
Published: April 2022

Parmi toutes les institutions qui prennent en charge l’enfance, il y a l’école. L’école, on ne la choisit pas toujours, et plus on a de difficultés, moins on choisit. À l’école, adultes et enfants sont confrontés à leur non-savoir et à leur impuissance. Ce non- savoir est une chance : il oblige à la rencontre ! C’est elle qui peut ouvrir à ce mouvement qu’est l’apprentissage. Dans les situations où plusieurs services et familles sont « condamnés » à travailler ensemble et à s’accorder, il s’agit de « tenir ensemble le cadre » pour bricoler un collectif sécurisé et sécurisant afin qu’apprendre soit enfin possible !
Relations de services
Authors: Livian Yves-Frédéric
Published: April 2022

Résumé Parmi les principaux aspects de la relation de service, il convient d’avoir à l’esprit : la pression sur les résultats, la tendance à la normalisation, l’évolution sociétale de certains comportements, le rôle essentiel de l’engagement subjectif… Plusieurs tensions apparaissent dans l’exercice de la relation de service : des prestations homogènes versus individualisation des services, le respect des procédures versus la personnalisation de la prestation, l’autonomie versus le contrôle des salariés… Sur le plan des pratiques de gestion inadaptées, à retenir : l’inadaptation des outils informatiques lors de l’interaction attendue avec le client, l’absence d’influence du département GRH sur l’organisation du travail, le contenu des tâches, les risques psychosociaux. Au regard des pistes d’action possibles, l’accent est mis sur les démarches participatives de conception des postes de travail ou des outils, la formation de la hiérarchie intermédiaire, l’intérêt à s’appuyer sur un examen de l’activité réelle des salariés, de disposer d’espaces d’échanges et de réflexion sur les pratiques.
La pulsion dans l’histoire de la philosophie
Authors: Baas Bernard
Published: April 2022

Si c’est assurément à Freud que revient l’initiative d’une théorie des pulsions, il n’en reste pas moins que le concept même de pulsion a marqué l’histoire de la philosophie : elle y apparaît toujours comme la motion indéterminée dont se soutient l’activité désirante, y compris sous la forme de l’activité intellectuelle. Cela concerne non seulement les philosophes qui ont inspiré Freud, comme Schopenhauer, qui la nomme « vouloir-vivre », ou Nietzsche, qui la pense comme « volonté de puissance » ; mais aussi des métaphysiciens aussi décisifs que Kant, qui parle explicitement de la « pulsion » de la raison dans sa tendance nécessaire mais illusoire à s’élever à l’inconditionné absolu, ou déjà Platon, pour qui la pulsion, en tant que principe de l’acte de philosopher, est de nature essentiellement érotique.
Féminité singulière Pulsion
Authors: Chaboudez Gisèle
Published: April 2022

La pulsion à l’œuvre dans une féminité est peu explorée et relève pourtant d’un champ essentiel de l’économie de l’inconscient, celui que ne recouvre plus le fantasme. Une issue hors de la logique toute, prise entièrement dans la fonction et la grammaire phallique du discours, est son préalable. Elle s’oppose, en ce sens, aux discours qui parlent du féminin au nom de toutes les femmes.
Des avatars de la pulsion freudienne
Authors: Sédat Jacques
Published: April 2022

Freud repère, dès 1905, les différentes pulsions qui se manifestent successivement dans la vie du nourrisson puis de l’enfant, et qui vont toutes laisser une trace dans la construction du corps et de la psyché. Or la première, la pulsion de genre, longtemps occultée, ne s’inviterait-elle pas dans notre actualité ?
Les obscurs objets du désir des hommes
Authors: De Neuter Patrick
Published: April 2022

Partant du concept d’objets causes de désir et de la liste de quatre objets prototypiques que Lacan a proposée (voix, regards, sein, étron), l’auteur se demande pourquoi Lacan n’y a inclus ni le pénis, ni le sexe féminin. Se centrant sur le désir des hommes et par conséquent prioritairement sur le sexe des femmes et l’utérus de la mère, il démontre combien les comportements des hommes autant que les œuvres artistiques indiquent que ces « éclats du corps » sont d’importants déterminants du désir sexuel des hommes tout autant que de leurs symptômes et de leurs désirs agressifs, haineux voire destructeurs. Il en conclut qu’il est important que les psychanalystes en parlent plus librement.
Arab American Identity in Mohja Kahf’s The Girl in the Tangerine Scarf
Authors: Bayeh Jumana
Published: April 2022

Dans cet article nous nous demandons comment l’identité se forme, comment elle se négocie et comment elle se transforme dans un contexte de diaspora et de migration. Ce questionnement prend place dans la fiction arabo-américaine de l’Amérique post-11 Septembre. Prenant pour objet d’analyse le roman The Girl in the Tangerine Scarf de Mohja Kahf, nous cherchons à souligner le rôle essentiel que joue le récit et la mise en récit pour comprendre comment l’identité est influencée et altérée dans un monde où le racisme et les discriminations contre les Arabes et les Musulmans se sont intensifiés.
Photography and the Remapping of Home in Contemporary Arab American Literature
Authors: Arami Sara
Published: April 2022

Cet article a pour but d’étudier les notions de « chez soi » et d’identité dans la fiction de deux auteures arabo-américaines à travers l’utilisation de représentations photographiques et de photos. Il se concentre sur la manière dont la photographie et les photos sont mises en œuvre dans les récits de deux romans de Mohja Kahf et Alia Yunis afin d’examiner comment les personnages immigrés des romans s’engagent dans un processus de reconfiguration de l’espace du « chez soi ».
La place de carrefour de la prévention spécialisée : une réponse possible au phénomène dit d’« incasabilité » des jeunes en difficultés multiples ?
Authors: Achard Christelle
Published: April 2022

« Dans quelle mesure la situation de carrefour de la prévention spécialisée pourrait-elle constituer une forme de réponse au phénomène dit d’“incasabilitéˮ des jeunes en difficultés multiples ? ». Par cet article, nous proposerons de considérer les situations d’« incasabilité » comme les « productions institutionnelles » d’un système de prise en charge de plus en plus complexe. Ceci, dans l’objectif d’interroger la pratique interstitielle, inter-institutionnelle, et inter-sectorielle de la prévention spécialisée – considérée dans ses richesses, fragilités et paradoxes comme esquisse de solution face à ces phénomènes dits d’« incasabilité »
La participation parentale en contexte scolaire au prisme de la justice sociale et de la parité de participation
Authors: Gagnon Frédérik , Marchand Isabelle
Published: April 2022

La participation parentale en contexte scolaire comporte un caractère polysémique. Les mécanismes institutionnalisés qui permettent aux parents de participer aux décisions de l’école impliquent des règles qui contribuent à normaliser les formes de participation parentale. À partir d’une étude de cas et d’une analyse de discours, nos résultats montrent que tant les parents engagés dans la gouvernance d’un établissement scolaire, ainsi que les acteurs scolaires, tiennent un discours de disqualification envers les parents des milieux défavorisés. Ces discours négatifs sur les familles des milieux défavorisés, concernant notamment leur déficit parental, soulèvent des enjeux au regard de la justice sociale et de la parité de participation.
Sartre et l’expérience politique de Libération
Authors: Cormann Grégory , Hamers Jeremy
Published: April 2022

L’intellectuel incarne l’esprit critique dans les médias institués grâce auxquels il serait possible de réinterroger l’actualité et ce qu’on appelle « les questions de société ». À ce titre, son action prétend s’inscrire dans la lignée des interventions médiatiques de penseurs critiques des années 1960 et 1970. En nous arrêtant à un des jalons les plus foisonnants de cette histoire, l’expérience du journal Libération portée par Sartre au début des années soixante-dix, nous voudrions contester cette continuité…
Le transfert : de la répétition à la transformation
Authors: Breton Stéphane
Published: April 2022

À la fois résistance et levier du changement, le transfert interroge le thérapeute et l’invite à se positionner singulièrement par rapport au patient. De Freud à François Roustang, de la psychanalyse à l’hypnothérapie, le transfert s’installe au cœur du processus psychothérapeutique et pose question…
La Jeunesse fasciste
Authors: Copertino Giovanni
Published: April 2022

L’histoire de la jeunesse fasciste a été difficile et controversée avant d’aboutir à la naissance de l’Oeuvre Nationale Balilla. Dès le début du mouvement, plusieurs tentatives d’institutionnalisation ont eu lieu mais c’est seulement en 1926 que le Parti National Fasciste l’encadre officiellement. À travers cette expérience pédagogique unique en Europe, leur objectif était la création d’un homme nouveau fasciste.
Un philtre pour Tristan et Iseut
Authors: Corbellari Alain
Published: April 2022

L’idée qu’un philtre magique pourrait rendre amoureux est courante dans nombre de mythologies et de vieilles légendes. Le mot philtre lui-même est d’origine grecque et dérive du verbe philein , « aimer » : un philtre est donc précisément « ce qui permet d’aimer »…
Oscillatory dynamics of p53 pathway in etoposide sensitive and resistant cell lines
Authors: Yan Fang , Dai Changyong , Liu Haihong
Published: April 2022

In this paper, the kinetics of p53 in two cell lines with different degrees of sensitivity to chemotherapeutic drugs is studied. There is much research that has explored the p53 oscillation, but there are few comparisons between cells that are sensitive to drug treatment and those that are not. Here, the kinetics of the p53 system between etoposide-sensitive and etoposide-resistant cell lines in response to different drug doses and different protein synthesis time delays are studied and compared. First, the results showed that time delay is an important condition for p53 oscillation by producing Hopf bifurcation in both the etoposide-sensitive and etoposide-resistant cells. If the protein synthesis time delays are zero, the system cannot oscillate even the dose of the drug increases. Second, the time delay required for producing sustained oscillation in sensitive cells is shorter than the drug-resistant cells. In addition, the p53-Wip1 negative feedback loop in drug-resistant cells is relatively highly strengthened than the drug-sensitive cells. To sum up, p53 oscillation is controlled by time delay, drug dose, and the coupled negative feedback network including p53-mdm2 and p53-wip1. Moreover, in the two different types of cells, the control mechanisms are similar, but there are also differences.
Maximal and minimal weak solutions for elliptic problems with nonlinearity on the boundary
Authors: Bandyopadhyay S. , Chhetri M. , Delgado B. B. , Mavinga N. , Pardo R.
Published: April 2022

This paper deals with the existence of weak solutions for semilinear elliptic equation with nonlinearity on the boundary. We establish the existence of a maximal and a minimal weak solution between an ordered pair of sub- and supersolution for both monotone and nonmonotone nonlinearities. We use iteration argument when the nonlinearity is monotone. For the nonmonotone case, we utilize the surjectivity of a pseudomonotone and coercive operator, Zorn's lemma and a version of Kato's inequality.
A new approach to generating virtual samples to enhance classification accuracy with small data—a case of bladder cancer
Authors: Lin Liang-Sian , Hu Susan C , Lin Yao-San , Li Der-Chiang , Siao Liang-Ren
Published: April 2022

In the medical field, researchers are often unable to obtain the sufficient samples in a short period of time necessary to build a stable data-driven forecasting model used to classify a new disease. To address the problem of small data learning, many studies have demonstrated that generating virtual samples intended to augment the amount of training data is an effective approach, as it helps to improve forecasting models with small datasets. One of the most popular methods used in these studies is the mega-trend-diffusion (MTD) technique, which is widely used in various fields. The effectiveness of the MTD technique depends on the degree of data diffusion. However, data diffusion is seriously affected by extreme values. In addition, the MTD method only considers data fitted using a unimodal triangular membership function. However, in fact, data may come from multiple distributions in the real world. Therefore, considering the fact that data comes from multi-distributions, in this paper, a distance-based mega-trend-diffusion (DB-MTD) technique is proposed to appropriately estimate the degree of data diffusion with less impacts from extreme values. In the proposed method, it is assumed that the data is fitted by the triangular and trapezoidal membership functions to generate virtual samples. In addition, a possibility evaluation mechanism is proposed to measure the applicability of the virtual samples. In our experiment, two bladder cancer datasets are used to verify the effectiveness of the proposed DB-MTD method. The experimental results demonstrated that the proposed method outperforms other VSG techniques in classification and regression items for small bladder cancer datasets.
Do we trust the government? Attributes of COVID-19 vaccine hesitancy and acceptance in Nigeria
Authors: Ekwebelem Osmond C. , Onyeaka Helen , Yunusa Ismaeel , Miri Taghi , Onwuneme Yahwedalu M. , Eunice Ayeni T. , Anyogu Amara , Obi Bright , Carol Ngwogu Ada
Published: April 2022

Objectives

A significant percentage of the population must be vaccinated to achieve herd immunity. Therefore the success of a vaccination program relies on the level of acceptance. This present study seeks to understand COVID-19 vaccine acceptance and hesitancy in Nigeria by assessing the public's willingness to get vaccinated.

Study design

This is a population-based cross-sectional study. Data were derived through a structured online survey.

Methods

A cross-sectional study was conducted among adult residents in Nigeria in March 2021 using a structured online questionnaire. The questionnaire surveyed participants' demographic characteristics and perception of COVID-19 and the COVID-19 vaccine. Descriptive statistics and inferential statistics using Chi-square, as well as univariable logistic regression to determine the factors associated with acceptance of COVID-19 vaccine was conducted.

Results

Of the 618 respondents, 272 (44%) reported being willing to get vaccinated. Interestingly, of the 346 (56%) respondents that would not take the COVID-19 vaccine, the highest marginal reasons for non-acceptance were lack of trust in the government 163 (47.1%), followed by the belief that the vaccine is not safe 67 (19.4%), and no enough information about the vaccine 49 (13.6%). In addition, male respondents and those with a university degree or above were statistically significantly more likely to accept a COVID-19 vaccine.

Conclusion

A considerable proportion of the study population is unwilling to receive a COVID-19 vaccine. This observation highlights the need for the government, public health officials, and advocacy groups to implement immediate awareness-raising measures to sway the public towards COVID-19 vaccine acceptance.
COVID-19 Pandemic and Its Brunt on Digital Transformation and Cybersecurity
Authors: Thangam Dhanabalan , Arumugam Thangaraja , kommuri Uday K. , Velusamy Kalyani , Subramanian Mathiraj , Ganesan Sathis Kumar , Suryakumar M.
Published: April 2022

COVID-19 has collapsed all the sectors in the world and created new strategies for business houses; as a result, all the industries have transformed their operating model from traditional to working from home, and it has paved the way to the ‘new normal'. However, governments have imposed various restrictions in connection with COVID-19, and business houses have determined and asked the employees to stay at home and to discharge their duties and responsibilities under the work-from-home concept; thereby, the technology-enabled working environment has become popular and played an important role in the case of personal and working life. As a result, a massive digital transformation was found in the business landscape, and this also brought cyber threats to the business organizations as all the business activities have been done virtually. With this backdrop, this chapter addresses how COVID-19 has transformed various sectors, areas where the digital transformation has taken place during COVID-19, the need for digital transformation, and cybersecurity.
Analyzing the 6G Technology
Authors: M. DhurgaDevi , Perumal Sakthivel , K. Gunasekaran
Published: April 2022

Due to increasing demand and faster access, the 6G technology is under invention, and as expected, it will come into functioning in 2030. This new paradigm of network communication brings more changes to the digital era with the aid of artificial intelligence. The architecture of 6G is compared with 5G technology and an analysis of 6G technologies in various applications domains is done. Various technologies integrated along with 6G including IoT, blockchain, big data, artificial intelligence, machine learning, robotics, quantum communications are analyzed. This chapter describes the requirements for new generation networks 6G technology as well as key performance indicators required for 6G networks. The research challenges are explored under different attributes for future contribution of new technology towards the wireless evolution.
Potential Applications of 6G-Enabling Technologies and Challenges
Authors: Yiming Zhang , Yunfeng Zhu , Qiu Yang , Krishnamoorthy Sujatha
Published: April 2022

Through specific technical approaches, 6G will provide people with high quality of service (QoS) and high quality of experience (QoE), so as to make human life better. The author predicts the huge potential and development trend of 6G wireless communication technology combined with the healthcare field. 6G is a promising communication technology, and it is expected to revolutionize many sectors, including healthcare. Currently, time and space are the primary barriers to healthcare, and 6G has the potential to break these barriers down. The authors first introduce the background and related obstacles of the current healthcare development field and then prove the huge potential of 6G in its development field. Further, they reveal how 6G technology can be utilized for remote surgery, epidemics, and pandemics. Finally, there are related challenges. Similarly, the cell free communication in AR/VR helps in 360 video scenes.
6G With Smart Healthcare Systems
Authors: Kavitha A. R. , P. Adlene Ebenezer , V. Sahaya Sakila
Published: April 2022

6G is a sixth-generation telecommunications standard that is presently being developed for wireless communications technologies that support cellular data networks. The ongoing deployment of 5G technology has urged researchers to explore what occurs next. From 2030 onward, 6G is a prospective communication technology that will enable wireless healthcare to become a reality. The current trend in the smart healthcare system has obstacles like risk of failure, security, and privacy. Healthcare will be absolutely AI-driven and reliant on 6G connectivity technologies, transforming our lifestyle perceptions. In order to have access, creative solutions must be introduced to improve our way of life including intelligent wearable devices, hospital-to-home services, intelligent internet of medical thing, quality of life (QoL), and new business strategy. The proposed intelligent healthcare system is classified into three major modules: hospital atmosphere, remote medical care, and disaster retaliation.
Artificial Intelligence and Machine Learning-Based Security Enforcement Techniques for 6G Communication
Authors: M. Deva Priya , A. Christy Jeba Malar , D. Kaleeswaran , R. Vijayarajeswari , L. Nithya
Published: April 2022

The next generation 6G era is considered to be highly coupled with intelligent network management and orchestration, while 5G is completely renowned for micro-service architecture-based network cloudification. 6G has been revolutionized for satisfying the mandatory services and carry forwarding the potentialities of 5G to superior and intelligent level. 6G network structure is determined to be dynamic, densely deployed and extremely heterogeneous, and when integrated with a high degree of Quality of Service (QoS) completely transforms the complex architecture into a seamless operating process of classical networks. The immense role of Artificial Intelligence (AI) and Machine Learning (ML) is required for improving the paradigm of 6G for learning information from uncertain and dynamic environments. This integration of AI and 6G resembles a double-edged sword since the application of AI may positively influences the privacy or security of 6G on one side, and negatively introduces the possibility of security infringement into 6G on the other side. In specific, the self-sustaining networks in 6G are obtained by guaranteed application of intelligent security attack mitigation schemes and proactive threat discovery approaches that facilitate end-to-end future network automation. In this Chapter, a comprehensive review of AI and ML-based security enforcement techniques are contributed for improving reliability during robust data dissemination in 6G communications. It presents consolidated and solidified role of AI and ML towards the enforcement of security in 6G networks. In addition, it also demonstrates the challenges and solutions that are handled by the inclusion of AI and ML-based attack mitigation approaches concerning energy and security-based ultra-massive access.
A Federated Learning-Based Light-Weight Privacy-Preserving Framework for Smart Healthcare Systems
Authors: Ramesh Velumani , S. Hariharasitaraman , Sundaram Sankar Ganesh , N. B. Prakash , G. R. Hemalakshmi
Published: April 2022

Smart healthcare systems have been widely applied in the fields of intelligent healthcare, self-monitoring, diagnosis, and emergency. In recent years, there have been growing concerns regarding the privacy of the data collected from the users of the smart healthcare systems. This chapter proposes a light-weight federated learning framework based on multi-key homomorphic encryption for deploying predictive models trained on patient data distributed across multiple healthcare institutions without exchanging them. Two predictive models based on the proposed framework are deployed for in-house mortality prediction from patient data and COVID-19 detection from chest x-ray images. Performance evaluation of these models with standard datasets and comparative analyses show that the proposed models are superior to state-of-the-art approaches. The proposed framework and the models are potential solutions to improve the quality of healthcare across multiple healthcare institutions, protecting the sensitive patient data and ensuring personalization of healthcare.
Flutter-Based Real-Time Mobile App for Fruit Shelf-Life Prediction (FSP) Using Multi-Modality Imaging
Authors: Bhole Varsha Yogesh , Kumar Arun
Published: April 2022

The present work uses flutter and transfer learning-based techniques for predicting the shelf-life of fruits in real-time by reducing the demand for huge number of samples and longer training durations. The work uses mango fruit as a case study, by capturing two types of images axiomatically through smartphone rear camera and a Seek thermal camera. A set of models based on transfer learning were created, then trained, and applied post-training quantization for optimizing the model size and low latency. The models were subsequently converted into TFLite format with TF-Select Ops and deployed in the Flutter app code, and thereby generating the APK files for real-time execution on mobile devices. The performance metrics of the models were evaluated on accuracy, model size, and latency. With a minor level of degradation in accuracy, the model with quantization outperforms and achieves better latency and 12x times reduction in size. The overall accuracy achieved for both the cameras (normal and Thermal) on mobile device was 90% and 93.33% respectively, for predicting the fruit shelf life.
Generation of male germ cells in vitro from the stem cells
Authors: Cui Ying-Hong , Chen Wei , Wu Si , Wan Cai-Lin , He Zuping
Published: April 2022

Infertility has become a serious disease since it affects 10%–15% of couples worldwide, and male infertility contributes to about 50% of the cases. Notably, a significant decrease occurs in the newborn population by 7.82 million in 2020 compared to 2016 in China. As such, it is essential to explore the effective methods of obtaining functional male gametes for restoring male fertility. Stem cells, including embryonic stem cells (ESCs), induced pluripotent stem cells (iPSCs), spermatogonial stem cells (SSCs), and mesenchymal stem cells (MSCs), possess the abilities of both self-renewal and differentiation into germ cells. Significantly, much progress has recently been achieved in the generation of male germ cells in vitro from various kinds of stem cells under the specified conditions, e.g., the coculturing with Sertoli cells, three-dimensional culture system, the addition of growth factors and cytokines, and/or the overexpression of germ cell-related genes. In this review, we address the current advance in the derivation of male germ cells in vitro from stem cells based on the studies of the peers and us, and we highlight the perspectives and potential application of stem cell-derived male gametes in reproductive medicine.
The Biopolitics of (English) Rewilding
Authors: Thomas Virginia
Published: April 2022

Even 'hands off' approaches to conservation such as rewilding are intimately, sometimes violently, involved in the lives and deaths of the other-than-human species they seek to protect. Foucauldian biopolitics, with its exploration of the regulation of life and death, is increasingly being used to examine the control of other-than-human species. This article extends the work of other scholars by applying the concept of biopolitics to rewilding in England. A comparative case study of two rewilding sites (the Avalon Marshes in Somerset and Wild Ennerdale in Cumbria) identified common modes of biopolitics operating at both sites. These modes were animals/species as: expendable objects, machines/human proxies, analogues, and self-determining agents, all of which 'allowed' different levels of agency for the species concerned. Given that field sites were purposively selected to display contrasting contexts it is possible to extrapolate from the Avalon Marshes and Wild Ennerdale and propose that these biopolitical modes are operating at other English rewilding sites.
Psychometric properties of Persian version of five facets of mindfulness questionnaire
Authors: Khanjani Sajad , Foroughi Ali-Akbar , Bazani Meysam , Rafiee Sahar , Tamannaeifar Shima , Habibi Mojtaba
Published: April 2022

Background:

Many tools have been designed to measure mindfulness. Five Facets of Mindfulness Questionnaire (FFMQ) is one of the most widely used tools. This study was done to investigate psychometric properties FFMQ in Iranian students.

Materials and Methods:

FFMQ was translated into Persian and administered in 571 students of Shahid Beheshti University of Medical Sciences and Tehran University of Medical Science. Samples were selected using convenience sampling method. A battery including Difficulty in Emotion Regulation Scale (DERS), Emotion Regulation Questionnaire (ERQ), Spielberger's Trait Anxiety Questionnaire, and Affect Control Scales was used in studies for examining divergent, convergent, and discriminant validity. Data were analyzed using Cronbach's alpha, test–retest reliability, and confirmatory factor analysis.

Results:

Results of this study supported the five-factor structure of FFMQ (root mean square error of approximation = 0.06, Comparative Fit Index = 0.81 Goodness of Fit Index = 0.91, and Normed Fit Index = 0.87). There was a significantly negative correlation between the FFMQ with DERS, Trait Anxiety, Affect Control, suppression sub-scale of ERQ, and there was a positive correlation with reappraisal subscale of ERQ. The Cronbach's alpha for the FFMQ was. 78.

Conclusion:

FFMQ have good psychometric properties in Iranian student sample, and it can be used in studies on student populations.
New-onset acute ischemic stroke following COVID-19
Authors: Khorvash Fariborz , Najafi Mohammad Amin , Kheradmand Mohsen , Saadatnia Mohammad , Chegini Rojin , Najafi Farideh
Published: April 2022

Background:

Neurological manifestations of coronavirus disease 2019 (COVID-19) have been highlighted. COVID-19 potentially increases the risk of thromboembolism. We aimed to compare patients with COVID-19 with and without new-onset acute ischemic stroke (AIS).

Materials and Methods

In this single-center retrospective case–control study, demographics, clinical characteristics, laboratory findings, and clinical outcomes were compared between 51 patients with both COVID-19 and AIS (group A) and 160 patients with COVID-19 and without AIS (group B).

Results:

Patients in group A were significantly older, more likely to present with critical COVID-19 (P = 0.004), had higher rates of admission in the intensive care unit (P < 0.001), more duration of hospitalization (P < 0.001), and higher in-hospital mortality (P < 0.001). At the time of hospitalization, O2 saturation (P = 0.011), PH (P = 0.04), and HCO3 (P = 0.005) were lower in group A. White blood cell count (P = 0.002), neutrophil count (P < 0.001), neutrophil-lymphocyte ratio (P = 0.001), D-Dimer (P < 0.001), blood urea nitrogen (BUN) (P < 0.001), and BUN/Cr ratio (P < 0.001) were significantly higher in patients with AIS.

Conclusion:

Stroke in COVID-19 is multifactorial. In addition to conventional risk factors of ischemic stroke (age and cardiovascular risk factors), we found that patients with more severe COVID-19 are more prone to ischemic stroke. Furthermore, leukocyte count, neutrophil count, neutrophil-lymphocyte ratio, D-Dimer, BUN, and BUN/Cr ratio were higher in patients with AIS following COVID-19 infection.
Gastrointestinal manifestations in patients with coronavirus disease-2019 (COVID-19)
Authors: Tabesh Elham , Soheilipour Maryam , Sami Ramin , Mansourian Marjan , Tabesh Faezeh , Soltaninejad Forogh , Dehghan Mehrnegar , Nikgoftar Niloofar , Gharavinia Ali , Ghasemi Khojasteh , Adibi Peyman
Published: April 2022

Background:

In this study, we summarized the data on gastrointestinal (GI) involvement and the potential association with clinical outcomes among the patients admitted to Khorshid Hospital.

Materials and Methods:

We investigated 1113 inpatients (≥18 years old) diagnosed with coronavirus disease-2019 (COVID-19) from March to June 2020 in Khorshid Hospital. We collected demographic details, clinical information, vital signs, laboratory data, treatment type, and clinical outcomes from patients’ medical records. The data of patients with GI symptoms were compared with those without GI symptoms.

Results:

A total of 1113 patients were recruited (male = 648). GI symptoms were observed in 612 (56.8%) patients (male = 329), the most common of which were nausea 387 (34.7%), followed by diarrhea 286 (25.7%), vomiting 260 (23.4%), and abdominal pain 168 (15.0%). The most prominent non-GI symptoms were cough 796 (71.5%), fever 792 (71.2%), shortness of breath 653 (58.7%), and body pain 591 (53.1%). The number of patients who were discharged, died, and were admitted to intensive care unit was significantly different in groups on the basis of GI and non-GI symptoms (P = 0.002, 0.009, 0.003).

Conclusion:

While COVID-19 was predominantly diagnosed in males, GI symptoms were more commonly reported by females. The results indicated that GI symptoms in COVID-19 patients are common, and the symptoms are not correlated with the severity of the disease. Moreover, the presence of GI symptoms was positively related to milder disease. Among COVID-19 positive patients, the clinical outcomes of the GI group were promising, compared to those of non-GI group.
Nigella sativa extract in the treatment of depression and serum Brain-Derived Neurotrophic Factor (BDNF) levels
Authors: Zadeh Aryan Rafiee , Eghbal Aynaz Foroughi , Mirghazanfari Seyed Mahdi , Ghasemzadeh Mohammad Reza , Nassireslami Ehsan , Donyavi Vahid
Published: April 2022

Background:

Here, we aimed to investigate the therapeutic effects of Nigella sativa extract on serum brain-derived neurotrophic factor (BDNF) and depression score in patients with depression.

Materials and Methods:

This clinical trial was performed in 2021 in the hospitals of military forces in Tehran on 52 male patients with major depressive disorder treated with sertraline. We used the Depression, Anxiety, and Stress Scale-21 Items (DASS-21) questionnaire to assess the patients. Serum BDNF levels were measured by the enzyme-linked immunosorbent assay. Patients were then divided into two groups receiving 1000 mg N. sativa oil extract, daily, and placebo. Both groups received sertraline for at least 3 months. DASS-21 questionnaire and serum BDNF levels were measured after 10 weeks.

Results:

After treatments, we observed significantly decreased DASS-21 score (−11.24 ± 5.69) in the intervention group (P < 0.001) and placebo (−2.72 ± 6.19, P = 0.032), but patients in the intervention group had significantly lower scores (50.1 ± 6.8 vs. 58.2 ± 5.6, respectively, P < 0.001). Furthermore, patients in the intervention group had significantly decreased depression score (−5.5 ± 2.47, P < 0.001) and lower scores compared to the placebo (P < 0.001) (18.6 ± 2.7 vs. 23.4 ± 2.1 in intervention and placebo, respectively). We also observed significantly increased BDNF levels in the intervention group after the treatments (6.08 ± 3.76, P < 0.001) compared to the placebo group (29.4 ± 3.6 vs. 24.9 ± 2.1, P < 0.001). Serum BDNF levels had also significant reverse correlations with DASS-21 score (r = −0.35, P = 0.011) and depression score (r = −0.45, P = 0.001).

Conclusion:

The use of N. sativa resulted in decreased depression score and increase in serum BDNF levels that indicate the importance and efficacy of this drug.
Epidemiology of Traffic Injuries before, during and 1 Year after the COVID-19 Pandemic Restrictions
Authors: Alsofayan Yousef M. , Alghnam Suliman A. , Alkhorisi Ahmad M. , Almalki Hani A. , Alsaihani Majed D. , Almazroa Monerah A. , Alharbi Abdullah K. , Hajjam Roaa M. , Alhajjaj Fahad S. , Alowais Jalal M.
Published: April 2022

Background:

Road traffic injuries are a leading cause of death in Saudi Arabia. Studies have examined the impact of the COVID-19 pandemic on traffic injuries treated in healthcare institutions, but its impact on patients seeking emergency medical transport for traffic injuries remains unclear.

Objective:

This study aimed to determine changes in traffic injuries’ distribution and outcomes among patients seeking emergency medical transport before, during, and after the COVID-19 restrictions were imposed in Saudi Arabia.

Methods:

This is a nationwide retrospective study of all injuries reported to the Saudi Red Crescent Authority (SRCA) between January 1st, 2020, and May 31st, 2021. The cases in the study were categorized based on the following three time periods: (1) Pre-restriction (January 1 to March 23, 2020), (2) restriction (March 24 to June 21, 2020), and (3) post-restriction (June 22, 2020, to May 31, 2021).

Results:

A total of 142,763 cases of traffic-related injuries were recorded at the SRCA during the study period: pre-restriction, 27,811 (19.5%); restriction, 14,414 (10.1%); post-restriction, 100,538 (70.4%). Males accounted for most cases throughout the study period, but a significant increase in the number of females was observed in the post-restriction period compared with the first two timeframes (12.2% vs. 3.4% and 3.4%, respectively; P < 0.01). During the restriction period, the rate of mortality was the highest, and rollover crashes were significantly higher (18.2% vs. 14.0% and 14.6%; P < 0.01). Overall, pedestrians were almost three times more likely to die following injuries than occupants or drivers (OR = 2.7).

Conclusions:

Further prevention programs to reduce traffic injuries are needed to improve traffic safety and improve population health.
Prevalence and Correlates of Attention Deficit Hyperactivity Disorder among College Students in Jeddah, Saudi Arabia
Authors: Alghamdi Waleed Ahmed , Alzaben Faten N. , Alhashemi Hashem H. , Shaaban Saeed Sami , Fairaq Khawlah M. , Alsuliamani Ahmed S. , Mahin Bsmah A. , Ghurab Radwan A. , Sehlo Mohammad Gamal , Koenig Harold G.
Published: April 2022

Background:

Childhood attention deficit hyperactivity disorder (ADHD) is commonly diagnosed in Saudi Arabia, but there is negligible evidence regarding adult ADHD in college students.

Objective:

To determine the prevalence and correlates of ADHD among undergraduates at King Abdulaziz University, Jeddah, Saudi Arabia.

Methods:

In this cross-sectional study, 2280 undergraduate students from 11 colleges at King Abdulaziz University, one of the largest university in Saudi Arabia, were approached in person with a questionnaire that elicited information regarding demographics, education, psychiatric history, health behaviors, and ADHD. A validated Arabic version of the Adult ADHD Self-Report Scale was used.

Results:

A total of 2059 students (90%) completed the questionnaire (mean age: 21.2 years). Almost one-tenth (11.9%) of the sample met the criteria for adult ADHD; only 6.5% had been diagnosed with ADHD in childhood and <1% (0.8%) had taken medication for the same. Multivariate analyses revealed that high family income, low grade in the last semester, parental divorce, diagnosis of childhood ADHD, prior diagnosis of depression, greater severity of current depression and anxiety, and cigarette smoking increased the likelihood of adult ADHD.

Conclusion:

A notable proportion of students in this study had suspected adult ADHD. Early evaluation of students with ADHD and identification of those at risk may potentially help in improving their academic performance and quality of life.
Design and Optimization of Tri-Band Open Loop Resonator Filter for BT, WiMAX, WLAN and Wi-Fi Applications
Authors:   Department of ECE., Mewar University, Chittorgarh (Rajasthan), India, Barmashe Pravin , Srivastava D. K.
Published: April 2022

The consumer wireless frequency spectrum is getting denser and overlapping so may signals can cause interference and less data speed. There is need to either switch to new channel or to use newer technologies available. As per FCC new 6GHz band is now open for WLAN & Wi-Fi networks and to filter out other signals a microwave filter could the best mate. This paper proposed a tri-band microstrip filter having rectangular resonator with open loop has been evaluated. Because of its tiny size, lighter weight, cheaper cost, and superior performance, microstrip filters are often chosen over lumped filters at higher frequencies. The construction, refinement, and implementation of a modular tri-band bandpass filter have examined in this research. The proposed low-profile tri-band MS filter with three resonators designed for BT, WiMAX, WLAN and Wi-Fi microwave applications. The physical size of the filter is 30×15 mm2 . The designed filter has full ground and substrate is of FR-4 material having 4.3 dialectic constant and 1.6 mm thickness. The filter is made of four rectangular resonators of diverse dimension. Resonators are arranged in symmetrical geometry. Proposed tri-band bandpass filter is having negative group delay which facilitates the feedforward amplifier circuits. Filters with NGD also helps to reduces the physical size of the microwave circuits. The proposed tri-band filter has passband characteristics on 2.37GHz, 5.36GHz, and 6.15GHz with the insertion loss of 1.03dB, 1.6dB, and 3.67dB having return loss of 23.3dB, 18.56dB, 12.8dB, and 21.87dB. Filter exhibits good fractional bandwidth of 21.92%, 6.68%, and 4.36% respectively. Proposed filter has 2 transmission zeros. The tested and simulated results of |S11| and |S21| parameters are quite identical which shows the excellent matching of physical parameters. Keywords - Tri-band, band-pass filter, NGD, rectangular resonators, BT, WiMAX, WLAN, Wi-Fi.
EFFECT OF CRYOGENIC TREATMENT AND TEMPERING TEMPERATURE ON MECHANICAL AND MICROSTRUCTURAL PROPERTIES OF AISI 431 STEEL
Authors: YILDIZ Emre , ALTAN ÖZBEK Nursel
Published: April 2022

This study investigated the effects of cryogenic treatment and tempering temperature applied after cryogenic treatment on the mechanical and microstructural properties of AISI 431 martensitic stainless steel. After conventional heat treatment (CHT), the steel samples were cryogenically treated at -180 °C for 6 hours and then tempered at 200 °C (CT200) and 300 °C (CT300) for 2 hours. After these processes, hardness measurement, tensile test, and abrasion test were carried out to determine the mechanical properties of the steel samples. In addition, microstructure photographs were taken to determine the microstructural properties. As a result of the study, it was observed that the cryogenic treatment applied after the conventional heat treatment was effective on the mechanical properties of AISI 431 martensitic stainless steel. Cryogenic treatment and tempering temperature showed the greatest effect on wear resistance. CT200 and CT300 samples were 62% and 56% less worn than the CHT sample. Compared to the CHT sample, the yield strength of CT200 and CT300 samples increased by 6.95% and 7.03%, while the hardness increased by 3.89% and 3.52%.
Modelling framework to quantify the risk of AMR exposure via food products - example of chicken and lettuce
Authors:   Ausvet Europe, Faverjon Céline , Cameron Angus ,   Ausvet Europe, De Nardi Marco ,   Safoso
Published: April 2022

Antimicrobial resistance (AMR) is a complex issue where microorganisms survive antimicrobial treatments, making such infections more difficult to treat. It is a global threat to public health. To increase the evidence base for AMR in the food chain, the FSA has funded several projects to collect data to monitor the trends, prevalence, emergence, spread and decline of AMR bacteria in a range of retail foods in the UK. However, this data and information from the wider literature was yet to be used to create tools to aid in the production of quantitative risk assessment to determine the risk to consumers of AMR in the food chain. To assist with this, there was a need to develop a set of modular templates of risk of AMR within foods. This sought to allow the efficient creation of reproducible risk assessments of AMR to maintain the FSA at the forefront of food safety.
Estrategias de educación ambiental para la conservación de ecosistemas: una revisión bibliográfica
Authors: Rojas Lyda Yiced Machuca , Raigoso Yenny Patricia Pérez
Published: April 2022

Una de las problemáticas actuales que enfrentan la sociedad y el medio ambiente, es el impacto negativo generado por las prácticas nocivas de carácter antropogénico que tienen impactos sobre ecosistemas, y sobre todas las especies, incluyendo a la especie humana. Malas prácticas que incluyen la omisión de la responsabilidad y el desconocimiento que tienen los habitantes sobre la importancia de preservar y conservar plantas nativas del ecosistema las cuales son de vital importancia para garantizar el suministro de agua a las fuentes hídricas y de conservar la fauna y flora nativa. Desde lo anterior, las prácticas agrícolas como los cultivos de papa, rubas arvejas, entre otros; sumadas a la actividad ganadera y minera que afectan gravemente la capacidad de carga del ecosistema, están generando que la supervivencia de los páramos se vea gravemente comprometida, que la dinámica del ecosistema se altere y que se ponga en grave riesgo el suministro del líquido para las poblaciones, y la preservación del mismo. En tal sentido, la presente propuesta se centra en una revisión bibliográfica acerca de estrategias de conservación de ecosistemas que busca contribuir a la mitigación de los impactos ambientales negativos que se han generado por el daño directo e intencionado de las personas al entorno natural o por desconocimiento. La propuesta pretende ser un referente de estrategias de conservación de cualquier tipo de ecosistema y sobre medidas efectivas que eviten daños mayores y que aminoren los impactos generados en los ecosistemas. El alcance del proyecto se centrará principalmente en el diagnóstico acerca de las tendencias actuales de educación ambiental en la conservación de ecosistemas, así mismo describir cada una de las metodologías encontradas, analizando su efectividad en la conservación de ecosistemas alrededor del mundo.