bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis, structure, and properties of switchable cross-conjugated 1,4-diaryl-1,3-butadiynes based on 1,8-bis(dimethylamino)naphthalene
Authors: Tsybulin Semyon V , Filatova Ekaterina A , Pozharskii Alexander F , Ozeryanskii Valery A , Gulevskaya Anna V
Published: May 2023

A set of novel 1,4-diaryl-1,3-butadiynes terminated by two 7-(arylethynyl)-1,8-bis(dimethylamino)naphthalene fragments was prepared via the Glaser–Hay oxidative dimerization of 2-ethynyl-7-(arylethynyl)-1,8-bis(dimethylamino)naphthalenes. The oligomers synthesized in this way are cross-conjugated systems, in which two conjugation pathways are possible: π-conjugation of 1,8-bis(dimethylamino)naphthalene (DMAN) fragments through a butadiyne linker and a donor–acceptor aryl–C≡C–DMAN conjugation path. The conjugation path can be “switched” simply by protonation of DMAN fragments. X-ray diffraction, UV–vis spectroscopy and cyclic voltammetry are applied to analyze the extent of π-conjugation and the efficiency of particular donor–acceptor conjugation path in these new compounds. X-ray structures and absorption spectra of doubly protonated tetrafluoroborate salts of the oligomers are also discussed.
Synthesis of medium and large phostams, phostones, and phostines
Authors: Xu Jiaxi
Published: May 2023

Phostams, phostones, and phostines are a series of 1,2-azaphosphaheterocycle and 1,2-oxaphosphaheterocycle 2-oxide derivatives. They are phosphorus analogues of lactams and lactones and important biologically active compounds. The strategies for the synthesis of medium and large phostams, phostones, and phostines are summarized. They include cyclizations and annulations. Cyclizations achieve ring construction through the formations of C–C, C–O, P–C, and P–O bonds in the rings, while annulations build the rings via [5 + 2], [6 + 1], and [7 + 1] fashions with the stepwise formation of two ring bonds. This review includes the recent syntheses of seven to fourteen-membered phostam, phostone, and phostine derivatives.
Substrate Optimization for Bioemulsification Using Saccharomyces cerevisiae 2031 by Response Surface Methodology
Authors: Malabuyoc Justine Allen S. , Alcantara Virgie A. , Arocena Rhebner E. , Elegado Francisco B.
Published: May 2023

Biosurfactants are microbially derived amphiphilic molecules that can be used as biodegradable emulsifiers in various applications. For biosurfactant production to be economically viable, inexpensive raw materials should be used. In this study, substrate optimization of biosurfactant production from Saccharomyces cerevisiae 2031 was done using molasses as an additional carbon source to glucose, and coco paring meal extract as a nitrogen source. Optimum conditions were determined as pH 5.69, 10.60% (w.v-1) molasses and 7.27% (v.v-1) coco paring meal extract using Box-Behnken design. At these conditions, the obtained responses: namely biomass concentration and % emulsification index determined with kerosene, were 6.43 g.L-1 and 82.81%, respectively. The highest emulsification activity (84.60%) was attained after 4 days of shake-flask fermentation. On the other hand, a bioreactor system observed the maximum yield for emulsification activity (93.33) after 4 days. The biosurfactant extracted was characterized by its total sugar, protein content and surface tension reduction.
The Effects of GA3 Application on the Quality of ‘Kediri Kuning’ Variety of Grape (Vitis vinifera L.)
Authors: Mayadewi Ni Nyoman Ari
Published: May 2023

‘Kediri Kuning’ is one of the superior varietiy in Indonesia. Fruit quality is an important thing that must be considered. This research reports the effects of GA3 on the quality of ‘Kediri Kuning’ variety of grape. This experiment employed a randomized block design, five treatments, and seven replications. Meanwhile, the treatments employed GA3 concentrations of 0, 25, 50, 75, and 100 ppm. The GA3 was applied by spraying GA3 in inflorescence twice before anthesis, namely on days 14 and 28 after production pruning. Data was analyzed using analysis of variance and the differences between treatment means were analyzed using Least Significant Difference (LSD). This study revealed that GA3 25-100 ppm could more significantly increase fruit sugar content at harvest, fruit length, and fruit diameter than the control group. Seed weight at a concentration of 100 ppm is lower and more statistically significant than that at other treatments. However, all treatments could not induce seedless because the seed remains in the fruit.
PELATIHAN TEKNIK COACHING PADA PERAWAT SUPERVISOR DAN APLIKASINYA DI RS X
Authors: Lidya Rumerung Christie , Rumambi Magda Fiske , Yoche Maria Maxmilla , Tahulending Peggy Sara
Published: May 2023

Nursing is one of the supporting components with the most extensive composition in a hospital, where around 40-60% of health professionals in hospital are nurses. This places nurses as one determining factor in measuring the quality of health services in a hospital. To provide service quality, nurses need to develop themselves by increasing skills, cooperation, and guidance from leader management. Guidance and mentoring are essential to improve nurses' competence and performance. Coaching can be a strategy to achieve management functions through guidance, namely the function of direction and controlling. This PKM aimed to train supervisory nurses to be able to do coaching techniques to nursing staff in their ward. The method includes presentation about coaching materials and coaching session practice (role play). Pre- and post-evaluation were conducted to measure participants’ level of understanding. Workshop was held for partipants to practiced coaching sessions using IGROW technique. Results obtained from eleven participants showed a significant increase in knowledge before and after learning (p=0.003). This PkM recommends the implementation of continuous coaching as well as evaluating the effectiveness of coaching by measuring the level of satisfaction of nursing staff before and after implementation of coaching session.
WORKSHOP PENGUATAN MANAJEMEN MEDIA DIGITAL DI DESA WISATA SIDOWAYAH, KLATEN, JAWA TENGAH
Authors: ALKHAJAR EKA NADA SHOFA , Wijaya Sri Herwindya Baskara , Primasari Ina , Prabowo Henricus Hans Setyawan , Suranto Joko , Sulihyantoro Aryanto Budhy , Tommy Candra Deniawan , Tiyanto Dwi
Published: May 2023

Desa Wisata saat ini menjadi salah satu tren pariwisata di Tanah Air. Dengan memanfaatkan potensi lokal, banyak desa berlomba mempercantik diri agar bisa menjadi destinasi wisata. Hadirnya beragam teknologi digital utamanya internet dan media sosial menjadikan pariwisata desa-desa wisata di Tanah Air kian semarak. Namun, pandemi COVID-19 menjadikan banyak desa wisata di Indonesia ikut terdampak akibat penurunan jumlah wisatawan, salah satunya Desa Sidowayah, Kecamatan Polanharjo, Kabupaten Klaten, Jawa Tengah.

Terkait dengan itu, untuk meningkatkan kembali kekuatan citra (branding) Desa Sidowayah sebagai destinasi wisata, maka Research Group D3 Komunikasi Terapan Sekolah Vokasi Universitas Sebelas Maret (UNS) Surakarta menyelenggarakan workshop penguatan manajemen media digital desa wisata. Kegiatan ini diselenggarakan pada Selasa, 5 Juli 2022 di Pendopo Umbul Siblarak, Desa Sidowayah, Klaten. Kegiatan dihadiri sekitar 20 peserta dari kalangan badan usaha milik desa, kelompok sadar wisata, pengelola media digital desa dan karang taruna.

Materi kegiatan berupa penyegaran prinsip-prinsip manajemen profesional dalam tata kelola media digital desa wisata secara profesional meliputi perencanaan, pengorganisasian, pelaksanaan dan pengevaluasian. Selain itu, disampaikan tentang strategi teknis pembuatan media konten untuk berbagai platform media sosial.
Pharmacological treatment of cognitive impairment in patients with major depressive disorder – a review
Authors:   “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Pavel Alexandru N. ,   “Alexandru Obregia” Clinical Hospital of Psychiatry, Bucharest, Romania, Dutu Irina ,   “Alexandru Obregia” Clinical Hospital of Psychiatry, Bucharest, Romania, Giurgiuca Ana ,   “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   “Alexandru Obregia” Clinical Hospital of Psychiatry, Bucharest, Romania, Matei Valentin P. ,   “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   “Alexandru Obregia” Clinical Hospital of Psychiatry, Bucharest, Romania
Published: May 2023

INTRODUCTION Depression is an affective disorder with high prevalence which also brings high impairment in occupational and social functioning. It is well known that cognitive deficits are part of MDD symptoms. What is more, there are MDD patients that have persistent cognitive disfunction even after remission of affective symptoms. Current available treatments seem to have no effect on this subgroup of patients. METHOD We conducted a search on PubMed, Cochrane Reviews, European Clinical Trials Database and ClinicalTrials.gov for current and developing pharmacological treatments of cognitive disfunction in remitted MDD patients. RESULTS Out of the 527 results only 2 studies met our inclusion criteria. These studies used vortioxetine as both monotherapy and add-on treatment and lisdexamfetamine as adjunctive treatment for cognitive symptoms in remitted or partially remitted MDD. Lisdexamfetamine showed improvements in executive function compared to placebo. Vortioxetine also showed improvements in cognitive disfunction but results did not meet statistical significance. CONCLUSION At the moment there are very few studies targeting cognitive symptoms in remitted MDD with conflicting results. Given the fact that cognitive disfunction is one of the major determinants of poor functioning and quality of life, more studies with larger samples and better methodology are needed to demonstrate clear benefits of a treatment in this group of patients.
Assessing the ability to recognize facial emotions in schizophrenia spectrum disorders
Authors:   “Alexandru Obregia” Clinical Hospital of Psychiatry, Bucharest, Romania, Ionescu Tiberiu Constantin ,   Neuroscience Department, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Popa Ionut-Stelian ,   “Alexandru Obregia” Clinical Hospital of Psychiatry, Bucharest, Romania, Tudose Catalina ,   “Alexandru Obregia” Clinical Hospital of Psychiatry, Bucharest, Romania,   Neuroscience Department, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
Published: May 2023

Objectives: The deficiency in social functionality represents a characteristic of the patients with schizophrenia spectrum disorders. At this time, there are several options for defining the concept of social functionality, all based on a multidimensional construction based on two main elements: social skills and social cognition. Social functionality involves summarizing multiple areas of daily life, such as occupation, interpersonal relationships, the ability to live independently and last but not least, the quality of life. The perception of facial emotions represents the individual's ability to recognize and use emotions, ensuring the necessary behavior in the development of interpersonal interactions. Methods: Given the heterogeneity of studies evaluating the main prognostic factors associated with poor ability to recognize facial emotions, this paper is a non-systematic literature review that aims to answer a series of questions such as: Do patients with schizophrenia have a real deficit in facial recognition or is it due to a deficit in higher cognitive function? Are these deficits specific to a particular group of patients? Are these deficits specific to physiognomy or is it a general deficit, which involves the recognition of objects? Results: In this study, several scientific papers that aim at the deficit in facial recognition from a behavioral, neuroimaging and psychiatric point of view were reviewed, these deficits being widely reported in patients with schizophrenia spectrum disorders. The results of the analyzed studies suggest that the deficit in facial emotions recognition is secondary to deficiencies in visual perception, followed by deficits in the attention and memory field. Moreover, there is research indicating a deficit in the perception of the stimulus. Similarly, abnormalities in eye movement during facial recognition tasks suggest a general impairment of visual exploration. Conclusions: People diagnosed with schizophrenia spectrum disorders face multiple deficits in social functionality. The medical literature presents scientific evidence on facial recognition deficits as well as the process of recognizing facial emotions among schizophrenia spectrum disorders.
Persistent delusional disorder versus OCD – how can we differentiate between delusions and obsessions without insight. A literature review
Authors:   “Prof. Dr. Alexandru Obregia” Clinical Psychiatry Hospital, Bucharest, Romania, Enache Andreea
Published: May 2023

Both obsessive-compulsive disorders and psychotic disorders are very common among inpatients and outpatients. Though at first these 2 seem to not have much in common there is an aspect that requires more attention from the clinician: differentiating between delusions and obsessions without insight. This could be facilitated by a careful comparative examination of the phenomenological features of typical obsessions (with or without compulsions) and delusions (with or without repetitive delusional behaviors). In this article we examined key clinical features of obsessions and delusions in order to help differentiate between them and several of these features, if properly and empathically investigated, can help discriminate obsessions and compulsive rituals from delusions and delusional repetitive behaviors. We also touch on the topic of beliefs as they are associated with most obsessions and compulsions in obsessive–compulsive disorder and as their characteristics can vary considerably, some of them have been regarded as delusions.
Numeric Simulation of Subsidence of Loess Soil under Wetting in a Limited Area
Authors: Khusanov Bakhtiyar  , Rikhsieva Barno
Published: May 2023

Loess and loess-like soils, when exposed to water, lose their strength characteristics, and physical and mechanical properties and change their original structure. The stress-strain state is transformed in these soils when wetted. Therefore, the problem of building on loess soils and studying the mechanisms of subsidence of loess soils is relevant. In this article, we consider the problem of determining the subsidence and stress state of the loess soil stratum under its own weight on a limited wetted area. To determine the distribution of water in soil, the method of changing stationary states is used, and to determine the subsidence and stress state, the finite difference method is used. The initial conditions are obtained by solving problems for the natural wetting of the layers of loess soil. The numerical results obtained of the subsidence of the free surface of the layer of loess soil 40 m thick agree well with experimental data on the duration of wetting at a limited size of the source of water. The effect of the duration and moisture content on the process of subsidence and transformation of the stress state are determined. An increase in the size of the water source in soil led to an increase in the high moisture content of the area and an increase in the subsidence of the free surface of loess soil.
TD 2875 - Saneamento rural no Brasil : a universalização é possível?
Authors: Castro César Nunes de , Cerezini Monise Terra
Published: May 2023

A oferta de água potável e o destino adequado dos resíduos gerados pelas atividades humanas são dois importantes fatores que influenciam a qualidade de vida e a saúde de uma população. Nas últimas décadas, o acesso a serviços de saneamento básico tem apresentado avanços em todas as regiões brasileiras. Não obstante, o acesso a esses serviços pela população brasileira ainda está longe do ideal. Ainda que a Constituição Federal de 1988 (CF/1988) inclua o saneamento básico como um direito da população brasileira, atualmente, em 2023, universalizar a cobertura dos serviços de saneamento básico está longe de ser uma realidade, e isso é ainda mais distante no meio rural. Em função de fatores como recursos financeiros insuficientes e menor densidade populacional em áreas rurais encarecerem o provimento de serviços de saneamento básico para uma população dispersa, universalizar o acesso para esse conjunto de pessoas constitui um objetivo significativo. As dificuldades fiscais dos diversos entes federativos na última década, especialmente no âmbito federal, são, talvez, o principal entrave à ampliação do acesso. Dados de execução financeira de 2012 a 2022 dos investimentos relativos ao saneamento rural demonstram a significativa redução dos valores investidos.
THE EFFECT OF PUBLIC FACADE CHARACTERISTICS ON CHANGING PEDESTRIAN BEHAVIORS
Authors: Kesici Neslişah , Erkan Nilgün Çolpan
Published: May 2023

The facades that define the public open space shape the pedestrian behavior by affecting the visual perception of the pedestrians. In the literature on facade and human interaction, there are pioneering studies in the perspective of environmental perception, but there is a lack and method limitation on the effect of the facade on pedestrian behavior. For this reason, the research aims to evaluate pedestrian behaviors in two areas that are variable in terms of facades, together with video analysis and heat maps. Areas of similar typology in Istanbul’s Kadıköy district are compared because of the temporary exterior decoration of the historical candy store in case 1 during the New Year’s Eve. According to the research findings, there is a significant difference between the quantity of pedestrians exhibiting stagnant and flowing behaviors and the distribution of these pedestrians in the space. In addition, the subcategories of fluid and static behavior in evening and day conditions also reveal interpretable results regarding the front. The results of the research reveal that the facade features of the public space significantly affect the pedestrian behavior, and therefore this issue should also gain importance in the future of public space design.
Additions to hyphomycetes from Yungui Plateau, China with three new species (Ascomycota, Sordariomycetes)
Authors: Chun-Sheng Long , You-Peng Wu , Xu Zhang , Yan Lin , Xiang-Chun Shen , Jian Ma , Qi-Rui LI
Published: May 2023

Yungui Plateau is rich in fungal diversity. Hyphomycetes, growing on submerged wood, can promote the degradation of organisms and the reuse of rotten wood energy. During an investigation of hyphomycetes in this region, 19 species of dematiaceous hyphomycetes were collected in Yungui Plateau.

Both morphological identification and multi-gene phylogenetic analyses of ITS, tef1 and LSU sequences supported Coryneum sevenseptatis as a new species. Phaeoisaria guizhouensis and Pleurothecium yunanensis were introduced, based on morphology. Morphological descriptions and illustrations of the new species were detailed. Known species are listed with notes.
Evaluation of abundance of microplastics in the Bulgarian coastal waters
Authors: Georgieva Stanislava K. , Peteva Zlatina V. , Stancheva Mona D.
Published: May 2023

Plastic pollution in seawaters is ubiquitous, but quantitative estimates on the floating microplastics in the Black Sea are still limited. Plastics may adsorb persistent environmental contaminants, thus representing a potential risk for marine organisms.

Aim: Thе aim of the study was evaluation of the presence and characteristics of microplastic particles (MPs) in waters from the Black Sea coast of Bulgaria.

Materials and methods: Samples of coastal waters were collected from March 2021 to April 2022 from different stations on the Black Sea coast, including protected, aquaculture and industrial areas. In order to determine the number of plastic particles, 23 samples were collected from the surface waters at depth of 1–3 m close to the Bulgarian shore. Samples were treated with H2O2, plastic particles were isolated by density separation and filtered over a membrane filter. Identification analysis of micro particles (< 5 mm) was performed visually by microscopy.

Main results: Results indicated widespread presence of microplastics in coastal waters. Mean MPs concentration was calculated 7.3 ± 4.9 pt/l. The comparison of the North, Varna and South sampling area showed that there is no significant difference in the abundance of plastic particles. The most dominant type forms were fibres followed by fragments. The most abundant size class of fragments was 101–500 μm Ferret diameter.

Conclusion: Further studies are needed in order to fill knowledge gap and to evaluate distribution of plastic particles in the Black Sea and their potential ecological risk.
Impact of war on editors of science journals from Ukraine: Results of a survey
Authors: Zhenchenko Maryna , Izarova Iryna , Baklazhenko Yulia
Published: May 2023

Background: The war influences every step of the publishing process from the organ-izational structure of the journal and its business model to the psychological and financial well-being of its staff.

Objectives: The main aim of our research was to collect and analyse data on how the war has changed the operation and daily lives of those who work in editorial services and how significantly it has impacted their job and work.

Methods: The surveyed population comprised the staff on the scientific journals listed in the Ukrainian electronic register of the state scientific institution, namely the Ukrainian Institute of Scientific and Technical Expertise and Information. The participants were asked to complete a questionnaire designed to collect data on the background and activities of the journal during wartime.

Results: Among a total of 160 respondents (a response rate of 13.2%), 85 (53.1%) expe-rienced changes in editorial structure and work, particularly evident in fewer articles (mentioned by 71, or 44.4%, respondents), a switch to working remotely owing to relo-cation of staff (38, or 23.8%, respondents), changes in the frequency of publication (34, or 21.3%, respondents), changes in the topics covered in the articles (25, or 15.6%, respondents), and staff cuts (16, or 10%, respondents).

Conclusions: Ukrainian editors continued their work despite severe psychological difficulties and financial dependency. The editors expect greater support from the international community and suggestions on practical strategies to deal with the challenges without significant losses. Continuing surveys to identify problems arising from the changing conditions were also recommended.
La participation en acte : le recrutement d’une personne accompagnée… dans un centre de formation en travail social
Authors: Oumeddour Leila
Published: May 2023

L’article décrit le processus de recrutement d’une personne dite accompagnée au sein d’un centre de formation en travail social. L’expérience a pour point d’ancrage la réponse du centre de formation à l’injonction des autorités publiques à mettre en œuvre la dimension de « participation » des personnes concernée à la formation. La détermination et la confiance construite au fil du temps entre les principaux acteurs sont des facteurs clefs pour mener à terme une telle démarche. La difficulté de cette démarche a été renforcée par l’inexistence d’outils administratifs et l’absence d’accompagnement psychosocial et pédagogique des parties prenantes.
Quelle « participation citoyenne » à l’heure des libertés associatives contraintes ?
Authors: Langlet Marianne
Published: May 2023

La participation des citoyens est de tous les discours politiques. Dans la pratique, elle s’avère bien plus complexe à faire vivre. L’expérience de la convention citoyenne pour le climat en 2019 a montré que, malgré un travail reconnu par les experts, les mesures proposées par les citoyens ont été, au final, dans leur grande majorité écartées. Cette participation est d’autant plus compliquée à faire vivre alors que les initiatives citoyennes, les espaces citoyens que peuvent représenter les associations, se heurtent à la mise à mal des libertés associatives, l’instrumentalisation et la marchandisation qui transforment les associations en simples exécutantes de politiques publiques décidées sans elle. Face à ces constats, les espaces citoyens s’organisent, créent des observatoires citoyens, tentent de maintenir cet espace d’éducation populaire et d’émancipation pour participer à la vie de la cité.
Le travail à distance
Authors: Deschaux-Dutard Delphine
Published: May 2023

Peut-on conduire des négociations diplomatiques virtuelles ? La pandémie a imposé aux acteurs diplomatiques et militaires qui travaillent quotidiennement à la coopération avec des partenaires internationaux de basculer largement vers le télétravail. Afin de comprendre comment cette bascule a impacté la pratique de la coopération en matière de politique étrangère et de défense, ce chapitre repose sur une enquête de terrain réalisée en 2022 auprès de diplomates, de civils de la défense et de militaires français. Les trois enseignements principaux de cette recherche sont ainsi présentés. Tout d’abord, les négociations diplomatiques sont, dans de nombreux cas, possibles au format virtuel, avec d’importantes adaptations et limites. Ensuite, la virtualisation limite la pratique de la diplomatie informelle, pourtant si importante dans les relations internationales. Enfin, le passage de négociations diplomatiques au format virtuel nécessite de faire preuve de créativité pour recréer une dimension symbolique fondamentale.
Actualités et devenirs psychiques de la pandémie de Covid-19
Authors: Douville Olivier
Published: May 2023

À partir de sa pratique publique et de psychanalyste recevant des patients dans son cabinet, l’auteur expose la complexité sociologique et politique de la pandémie. Il explore comment cette situation de crise remanie les donnes d’une cure analytique et met en avant les risques de mélancolie actuelle. Il plaide également pour une autre définition de la santé que celle de la simple adaptation au milieu et que celle qui réduit la santé à un équilibre biologique.
La géographie de l’emploi industriel en Tunisie : vers un retournement des disparités régionales ?
Authors: Chagour Nejib , Haddad Samia , Bourdin Sébastien
Published: May 2023

Cet article analyse la distribution de l’emploi du secteur industriel en Tunisie à l’échelle de délégations sur la période 2003-2018 et montre dans quelle mesure les politiques d’aménagement appliquées au lendemain de la révolution du 14 janvier 2011 ont réduit les inégalités régionales dans ce secteur. Notre étude montre l’entrée de la Tunisie dans une nouvelle étape de développement caractérisée par une spécialisation régionale vers les industries de haute technologie. Il est analysé également l’évolution de la concentration spatiale de l’emploi à partir d’une étude exploratoire des données spatiales (ESDA). Nos résultats montrent que malgré la concentration de l’emploi global, qui a baissé après la révolution, on identifie toujours un regroupement local de l’emploi dans la région du littoral. L’étude révèle aussi que la concentration de l’emploi des industries de basse technologie a reculé après la révolution et s’est propagée sur plus de délégations alors que la concentration spatiale des industries de moyenne et de haute technologie a augmenté. Classification JEL : L11, O18, R11
Importance des produits « Made in China » dans le développement économique de la Chine
Authors: Da Silva Imelda Aurore , Abodohoui Alexis , Su Zhan
Published: May 2023

Le commerce international joue un rôle incontournable dans la croissance économique de chaque pays. En se basant sur la revue de la littérature et des statistiques descriptives, cet article traite des défis et enjeux des produits «  Made in China  » dans le développement économique de la Chine. Cette étude permet d’aborder l’importance des facteurs déterminants l’avenir des produits «  Made in China  » dans une période de turbulence économique où le commerce international pourrait être une échappatoire pour plusieurs pays qui envisageront de s’inspirer du modèle chinois. Classification JEL : F13, 025, 032, P41
La Chine, futur acteur dominant de l’industrie automobile mondiale ?
Authors: Fenet Jean-Marc , Lebrun Marie-Pia , Moisson Antoine
Published: May 2023

En 2022, la Chine est devenue le second exportateur mondial d’automobiles, devançant l’Allemagne. Ce retournement symbolique suscite des interrogations quant à la capacité de la Chine à devenir le futur acteur dominant de l’industrie automobile mondiale. Si la Chine est, depuis 2009, le premier marché et le premier producteur au niveau mondial dans le secteur de l’automobile, elle cherche aujourd’hui à internationaliser son industrie. Elle dispose d’un atout de taille avec ses véhicules à énergies nouvelles (VEN) compétitifs, qui ont été développés au cours de la dernière décennie grâce à une politique industrielle volontariste. Désormais bien implantés sur leur marché intérieur, les constructeurs chinois de VEN s’internationalisent sans rencontrer d’obstacles majeurs et visent à satisfaire des besoins croissants en matière de mobilité décarbonée. Dans le même temps, les constructeurs étrangers peinent à s’imposer sur le marché chinois et subissent une concurrence chinoise accrue sur leurs marchés traditionnels.
L’apprentissage adulte : une agentivité limitée
Authors: Evans Karen , Carré Philippe
Published: May 2023

L’examen des formes variées d’apprentissage et d’autoformation des jeunes et des adultes est au cœur de la problématique éducative de demain. Notre compréhension de l’adulte apprenant évolue avec la recherche sur la réflexivité, l’attitude d’apprenance, la motivation et l’agentivité. Ces thématiques sont elles-mêmes enrichies par des conceptions élargies des espaces d’apprentissage, en particulier dans les lieux de travail, les communautés et par l’expansion des technologies numériques. L’article examine ces différents aspects du débat multidisciplinaire sur l’apprentissage « tout au long de la vie » à travers une conception de l’agentivité humaine limitée, mais réelle.
La formation des adultes : entrées par l’action et par l’activité
Authors: Barbier Jean-Marie
Published: May 2023

En dépit de leur apparente proximité, action et activité ne désignent pas forcément les mêmes processus humains. Partant, elles n’induisent pas forcément les mêmes démarches de recherche, tant en termes d’objectifs, d’objets que de statut épistémologique.
Bilan et prospectives – Pratiques et recherches en éducation des adultes 2000-2020 au Québec
Authors: Roussel Jean-François
Published: May 2023

Depuis la Révolution tranquille, l’apport de l’éducation des adultes au Québec a évolué en passant d’une voie dite de seconde chance, vers celle de moteur d’une société en transformation. De nos jours, elle est surtout orientée vers le monde du travail. Au Québec, l’éducation des adultes a permis de développer trois domaines de recherche principaux, soit ceux de la littératie, de la formation au travail et du rôle des formateurs. Ce bilan établit également qu’entre 2000 et 2020 le nombre de recherches doctorales publiées liées à l’éducation des adultes s’est accru, la plupart ayant été menées en milieu organisationnel. Aujourd’hui, l’éducation des adultes au Québec vit une transition majeure en raison de l’apprentissage au moyen des technologies. Dans ce contexte, le développement des compétences en littératie numérique est devenu un enjeu majeur.
Route planning of heterogeneous unmanned aerial vehicles under recharging and mission time with carrying payload constraints
Authors: Phalapanyakoon Kriangsak , Siripongwutikorn Peerapon
Published: May 2023

Purpose: We consider the problem of route planning of multiple rechargeable heterogeneous UAVs with multiple trips under mission time and payload carrying constraints. The goal is to determine the types and number of UAVs to be deployed and their flying paths that minimizes the monetary cost, which is a sum of the recharging energy cost of each UAV, the UAV rental cost, and the cost of violating the mission time deadline.Design/methodology/approach: The problem is formulated as a mixed integer programming (MIP). Then, the genetic algorithm (GA) is developed to solve the model and the solutions are compared to those obtained from the exact method (Branch-and-Bound). Novel chromosome encoding and population initializations are designed, and standard procedures for crossover and mutation are adapted to this work. Test problems on grid networks and real terrains are used to evaluate the runtime efficiency and solution optimality, and the sensitivity of GA parameters is studied based on two-level factorial experiments.Findings: The proposed GA method can find optimal solutions for small problem sizes but with much less computation time than the exact method. For larger problem sizes, the exact method failed to find optimal solutions within the limits of time and disk space constraints (24 hours and 500 GB) while the GA method yields the solutions within a few minutes with as high as 49% better objective values. Also, the proposed GA method is shown to well explore the solution space based on the variation of the total costs obtained.Originality/value: The unique aspects of this work are that the model optimizes the sum of three different costs – the electricity recharging cost, the UAV rental cost, the penalty cost for mission deadline violation, and the recharging period based on the remaining energy, the payload capacity, and the heterogeneity of UAVs are incorporated into the model. The model is formulated as a mixed integer programming and the genetic algorithm is developed to solve the program. Novel chromosome encoding and population initializations are designed, and standard procedures for crossover and mutation are adapted to this work.
Formative research and the achievement of skills based on undergraduate theses in university higher education
Authors: Enriquez Giovanna , Zevallos Edith , Zenteno Flaviano , Pariona Daniel , López Rommel
Published: May 2023

The aim of this research was to determinate the relationship between formative research and the achievement of skills based on undergraduate theses in university higher education, considering three dimensions: student perception in the investigative endeavor, the role of the instructor and the institutional support in the process of building research skills. The methodology corresponds to a quantitative approach, and a survey technique was applied. A 21-item questionnaire card was designed, with a Likert scale that ranged from 1 to 5 for the formative research variable, and 30-item card with a Likert scale from 0 to 4 for the attainment of skills based on the thesis review. The instrument was validated by expert opinion, reaching an average of 85%. The reliability of the questionnaires was 0.92 and 0.95, respectively, according to the Cronbach’s alpha method. The population consisted of 1448 theses published in the institutional repository from 2016 to 2020, and the sample was made up of 110 theses from 11 colleges, with a 95% level of confidence. The results indicate that the perception of the achievement of research skills, instructor support during the research process and institutional support are “positive”; likewise, review of the theses reached a “successful” level. It is concluded that there is a direct relationship between formative research and the achievement of competences.
Media and information literacy in secondary students: Diagnosis and assessment
Authors: Turpo-Gebera Osbaldo , Zea-Urviola Mercedes , Huamaní-Portilla Fátima , Girón-Pizarro Milagros , Pérez-Zea Alexandra , Aguaded-Gómez Ignacio
Published: May 2023

In the information and knowledge society, technology and the COVID-19 pandemic have added to the debate on Media and Information Literacy (MIL). In Peru, in spite of the recommendations from international institutions, proper attention has not been given, generating gaps in the study curricula. From this perspective, the study investigates the level of development of MIL in students studying the last cycle of intermediate education. In order to determine this, the AMI-Peru-21 survey was designed and validated, based on the UNESCO proposals. This research is of a quantitative, descriptive and cross-curricular nature, which made it possible to diagnose the relationship of the socioformative factors with the levels of MIL achievement, based on a sample made up by 1250 students from the province of Arequipa. The results evidence the validity and reliability of the instrument (α=0.96) in order to measure the level of MIL, from the perspective of student self-perception, as well as the association of certain socioformative factors with MIL (p<0.000), among them, progress with age, i.e., older ages are associated with greater the levels of achievement, and females make more progress than males. It is also verified that access to basic services, such as electricity and the Internet, and the type of educational institution are correlated with higher levels of MIL achievement. From the evidence that is generated, in order to ensure the education of critical, ethical and responsible citizens, a set of initiatives is suggested to further the evolution of MIL in education.
Impact of couple stress and variable viscosity on heat transfer and flow between two parallel plates in conducting field
Authors: Saini Geetika , Hanumagowda B. N. , Varma S. V. K. , Chohan Jasgurpreet Singh , Shah Nehad Ali , Jeon Yongseok
Published: May 2023

This study explores the flow properties of a couple stress fluid with the consideration of variable viscosity and a uniform transverse magnetic field. Under the effect of irreversible heat transfer, a steady fluid flow has taken place between two parallel inclined plates. The fluid flows due to gravity and the constant pressure gradient force. The plates are fixed and isothermal. The governing equations have been solved analytically for velocity and temperature fields. The total rate of heat flow and volume flow across the channel, skin friction, and Nusselt number at both plates are calculated and represent the impacts of relevant parameters through tables and graphs. The findings show that velocity, temperature, and the total rate of heat flow across the channel are enhanced by increasing the couple stress parameter and the viscosity variation parameter, while increasing the values of the Hartmann number reduces them.
The improved giant magnetostrictive actuator oscillations via positive position feedback damper
Authors: Bauomy Hany , EL-Sayed A. T. , Salem A. M. , El-Bahrawy F. T.
Published: May 2023

This article contemplates the demeanor of the giant magnetostrictive actuator (GMA) when a positive position feedback (PPF) damper is used to enable tight control over its vibration. The methodology followed here mathematically searches for the approximate solution for the motion equations of the GMA with the PPF damper, which has been accomplished by using one of the most famous perturbation methods. The multiple scale perturbation technique (MSPT) of the second-order approximation is our strategy to obtain the analytical results. The stability of the system has also been investigated and observed by implementing frequency response equations to close the concurrent primary and internal resonance cases. By utilizing Matlab and Maple programs, all numerical discussions have been accomplished and explained. The resulting influence on the amplitude due to changes in the parameters' values has been studied by the frequency response curves. Finally, a comparison between both the analytical and numerical solutions using time history and response curves is made. In addition to the comparison between our PPF damper's effect on the GMA, previous works are presented. To get our target in this article, we have mentioned some important applications utilized in the GMA system just to imagine the importance of controlling the GMA vibration.
The role of cell-to-cell transmission in HIV infection: insights from a mathematical modeling approach
Authors: Rong Sophia Y. , Guo Ting , Smith J. Tyler , Wang Xia
Published: May 2023

HIV infection remains a serious global public health problem. Although current drug treatment is effective and can reduce plasma viral loads below the level of detection, it cannot eradicate the virus. The reasons for the low virus persistence despite long-term therapy have not been fully elucidated. In addition, multiple HIV infection, i.e., infection of a cell by multiple viruses, is common and can facilitate viral recombination and mutations, evading the immune system and conferring resistance to drug treatment. The mechanisms for multiple HIV infection formation and their respective contributions remain unclear. To answer these questions, we developed a mathematical modeling framework that encompasses cell-free viral infection and cell-to-cell spread. We fit sub-models that only have one transmission route and the full model containing both to the multi-infection data from HIV-infected patients, and show that the multi-infection data can only be reproduced if these two transmission routes are both considered. Computer simulations with the best-fitting parameter values indicate that cell-to-cell spread leads to the majority of multiple infection and also accounts for the majority of overall infection. Sensitivity analysis shows that cell-to-cell spread has reduced susceptibility to treatment and may explain low HIV persistence. Taken together, this work indicates that cell-to-cell spread plays a crucial role in the development of HIV multi-infection and low HIV persistence despite long-term therapy, and therefore has important implications for understanding HIV pathogenesis and developing more effective treatment strategies to control or even eliminate the disease.
Numerical schemes for a class of nonlocal conservation laws: a general approach
Authors: Friedrich Jan , Sudha Sanjibanee , Rathan Samala
Published: May 2023

In this work we present a rather general approach to approximate the solutions of nonlocal conservation laws. In a first step, we approximate the nonlocal term with an appropriate quadrature rule applied to the spatial discretization. Then, we apply a numerical flux function on the reduced problem. We present explicit conditions which such a numerical flux function needs to fulfill. These conditions guarantee the convergence to the weak entropy solution of the considered model class. Numerical examples validate our theoretical results and demonstrate that the approach can be applied to other nonlocal problems.
Sguardi femminili sullo scontro culturale
Authors: Serafin Silvana
Published: May 2023

Le presenti considerazioni nascono dalla necessità di avvertire il lettore sulle motivazioni che hanno spinto a pubblicare il n. 20 della rivista Oltreoceano come numero speciale. In esso, attraverso molteplici approcci al femminile, si è voluto offrire un panorama il più completo possibile sulla funzione della memoria riattivata nei secoli XX e XXI, relativa allo spazio culturale, artistico francese e francofono del periodo coloniale. Evidente è la necessità di appropriarsi di valori antichi che il tempo ha modellato attraverso il discorso della globalizzazione per riaffermarne le singole specificità. Un coro di donne, letterate ed artiste, fa sentire la propria voce proponendo modelli culturali alternativi con il risultato di indurre a riflettere sul concetto di frontiera reale, ideologica e sociale.
Le regard d’une intruse dans l’univers colonial : Les Pieds-Noirs de Marie Cardinal
Authors: Ferraro Alessandra , Sperti Valeria
Published: May 2023

En 1988 Marie Cardinal participe avec un long texte autobiographique agrémenté de photographies à l’album collectif Les Pieds-Noirs. Algérie 1920-1954. Ce témoignage liminaire imprime une perspective personnelle, poétique et problématique au volume. En se focalisant sur son expérience autobiographique, l’auteure, issue d’une famille matriarcale, condense l’histoire de quatre générations de femmes pieds-noires en mettant en perspective tous les stéréotypes et les rapports de force à l’œuvre dans cet échantillon colonial privé et intime. Deux perspectives s’entrecroisent dans le texte : celle des images qui ont un rôle de témoignage et celle de la narratrice qui met en question par son regard oblique, la légitimité de sa présence dans un Pays qui est pourtant le sien. La photobiographie de Marie Cardinal, loin d’être un album de famille, devient ainsi l’instrument de représentation des déchirements schizoïdes liés à la fin de l’entreprise coloniale.
Points de non-retour d’Alexandra Badea ou le théâtre des oublis de l’histoire coloniale
Authors: Mentzel Sophie
Published: May 2023

La trilogie d’Alexandra Badea questionne les impensés de l’histoire coloniale en s’intéressant à trois de ses scandales passés sous silence. Il s’agit ici de se demander comment le théâtre, à travers sa dramaturgie et sa scénographie, peut devenir l’espace de réparation du vide de l’Histoire.
Les pêcheries de Bahiret El Bibane
Authors: Faget Daniel , Khamassi Faten , Vermeren Hugo , Ben Souissi Jamila
Published: May 2023

Exploitée pour ses ressources halieutiques depuis l’Antiquité, la lagune de Bahiret El Bibane (Tunisie) passe au début du Protectorat français sous le contrôle de concessionnaires privés, liés à l’administration coloniale. Ce changement de statut s’accompagne d’une perte de contrôle des populations locales sur la lagune. Leurs pêcheries artisanales sont démantelées, leur habitat traditionnel détruit. Une grande bordigue, qui existe encore aujourd’hui, est installée à proximité de l’îlot Sidi Ahmed Chaouch. Cette prise de possession coloniale se heurte, dès les dernières années du xixe siècle, à une résistance plus ou moins ouverte des pêcheurs locaux. Cette résistance sera régulièrement affirmée jusqu’en 1954. L’accession à l’indépendance, en maintenant l’existence de l’ancien monopole colonial, a contribué à effacer la mémoire des anciennes communautés halieutiques de la lagune. L’hostilité de certains pêcheurs au régime des concessions demeure pourtant une réalité, comme en témoigne l’ampleur des pêches illégales qui affectent aujourd’hui Bahiret El Bibane.
The Disruptive Nature of Short Video-Based Social Media Platforms in China
Authors: Wu Jingwen
Published: May 2023

Can short video-based social media platforms disrupt economic markets and upend government censorship? Short videos have become the vanguard of social media. This chapter examines how this modern information communication technology (ICT) disrupts government regulation and the market as a whole in China, using TikTok as an example. Specifically, it argues that a video social media platform with unlimited content and low usage thresholds, combined with citizen's lack of legal awareness, makes it easy to expose privacy, encounter fraud, and infringe upon intellectual property. These factors are exasperated by TikTok's video format since video-based content is more difficult to censor in a timely manner. Consequently, TikTok poses challenges for government regulation and disrupts government censorship. The chapter concludes by discussing policy implications. Specifically, it proposes the implementation of modernized laws and regulations to tackle the distinct challenges and risks presented by cutting-edge technologies.
Tackling Digital Entrepreneurship Within the Illicit Economy
Authors: Danielsson Alicia
Published: May 2023

This chapter explores the current challenges and transitional needs required to regulate digital entrepreneurship within the illicit economy by examining digital entrepreneurship relating to commercial sex and trafficking in human beings for the purpose of sexual exploitation. As such, new innovative digital technologies are transforming serious and organised crime operations and, thus, need to also change the way the law, enforcement, and the wider criminal justice system combat crime. The chapter seeks to expose contemporary practises of digitally-facilitated commercial sex and trafficking in human beings for the purpose of sexual exploitation, recent developments in law and policy in the area, emerging investigative and prosecution practises within digital online environments, as well as necessary future changes to the law and enforcement.