bluuebunny/crossref_metadata_2025 huggingface dataset:
KEMAMPUAN BERPIKIR KRITIS MATEMATIS DITINJAU DARI HASIL BELAJAR SISWA
Authors: Kurniawan Frischa Angelline , Nurfahrudianto Aan , Yohanie Dian Devita
Published: April 2024

Kemampuan berpikir kritis merupakan salah   satu   tujuan   dalam   pembelajaran matematika (King & Goodson dalam Muliana, 2016) dalam (Pertiwi, 2018). Menurut Ennis (2015) Seseorang yang mempunyai kemampuan berpikir kritis harus memenuhi 12 indikator diantaranya memfokuskan pertanyaan, menganalisis argumen, bertanya dan menjawab pertanyaan, mempertimbangkan apakah sumber dapat dipercaya atau tidak, mengobservasi dan mempertimbangakan laporan observasi, mendeduksi dan mempertimbangkan hasil deduksi, menginduksi dan mempertimbangkan hasil induksi, membuat dan menentukan hasil pertimbangan, mengartikan istilah dan mempertimbangkan suatu arti, mengidentifikasi suatu asumsi, menentukan suatu tindakan, berinteraksi dengan orang lain. Menurut (Perkins & Murphy, 2006) berpikir  kritis  dibagi  dalam  4  tahap  yaitu  klarifikasi  (clarification),  asesmen  (assessment),  penyimpulan  (inference),  strategi/ taktik  (strategy/tactic). Adapun indikator menurut Polya dalam adalah memahami masalah, merencanakan pemecahan masalah, melakukan rencana pemecahan masalah dan memeriksa kembali pemecahan masalah. Tujuan penelitian ini adalah untuk mengetahui kemampuan berpikir kritis matematis ditinjau dari hasil belajar siswa dengan kategori hasil belajar rendah, sedang dan tinggi. Pendekatan penelitian yang digunakan dalam penelitian ini adalah pendekatan penelitian deskriptif kualitatif. Hasil dari penelitian ini menunjukkan siswa dengan kategori hasil belajar rendah mampu memenuhi lima indikator berpikir kritis menurut Perkins & Murphy yang disandingkan dengan indikator pemecahan masalah menurut Polya. Siswa dengan kategori hasil belajar sedang mampu memenuhi lima indikator berpikir kritis menurut Perkins & Murphy yang disandingkan dengan indikator pemecahan masalah menurut Polya. Sedangkan siswa dengan kategori hasil belajar tinggi mampu memenuhi enam indikator berpikir kritis menurut Perkins & Murphy yang disandingkan dengan indikator pemecahan masalah menurut Polya.
Knowledge Ply Chat
Authors: Satya Varma M Krishna , Rao Koteswara , Ganesh Sai , Sai Koushik Venkat , Krishnam Raju Rama
Published: April 2024

Despite their ability to store information and excel at many NLP tasks with fine-tuning, large language models tend to have issues about accurately accessing and altering knowledge, which leads to performance gaps in knowledge-intensive tasks compared to domain-specific architectures. Additionally, these models face problems when it comes to having transparent decision-making processes or updating their world knowledge. To mitigate these limitations, we propose a Retrieval Augmented Generation (RAG) system by improving the Mistral7B model specifically for RAG tasks. The novel training technique includes Parameter-Efficient Fine-Tuning (PEFT) which enables efficient adaptation of large pre- trained models on-the-fly according to task-specific requirements while reducing computational costs. In addition, this system combines pre-trained embedding models that use pre-trained cross-encoders for effective retrieval and reranking of information. This RAG system will thus leverage these state-of-the-art methodologies towards achieving top performances in a range of NLP tasks such as question answering and summarization.
A Review on Process Parameter Optimization in Material Extrusion Additive Manufacturing using Thermoplastic
Authors: Raju Alase Suresh , Bharule A. S.
Published: April 2024

Material extrusion is one of the most commonly used additive manufacturing techniques which utilizes thermoplastics as the building material. The quality and performance of parts produced via material extrusion depends highly on the process parameters selected. This paper reviews the work done by various researchers on optimizing key process parameters like extrusion temperature, layer thickness, infill percentage, infill pattern etc. in material extrusion 3D printing using thermoplastics like PLA, ABS and nylon. The effects of these parameters on properties like surface roughness, dimensional accuracy, mechanical strength are discussed. Statistical tools like Taguchi method and response surface methodology that have been applied for parameter optimization are also reviewed. The review highlights the need for further process optimization studies considering part design, build orientation and post processing to unleash the full potential of material extrusion 3D printing..
Entrepreneurial Views to the (Tax) Accountability of Taxpayers in Madagascar
Authors: Cyprien Zaralahy , Solofoson Georges , Chrétien Jaoroby Wili , Randriamihaingo Joël , Désiré Randriarilalao Shella , Daniel Rakotovao , Ernest Rasolonjatovo Gustave , Henintsoa Razafimanandraibe Lalaina
Published: April 2024

No country can live without autarchy or can develop fully without autonomy. However, each country is classified according to its stage of development, whether it is underdeveloped, developing or developed. This classification depends on the economic, political and social strength of the country in question. The objective of this article is to present the perspective of entrepreneurship vis-à-vis economic policy, with particular emphasis on the country's fiscal management. In this context, many entrepreneurs are impacted by this policy, and we can see that the current social inequality in Madagascar is largely justified by the purchasing power of its population. This situation will lead to a proliferation of informal companies and tax evasion. This is an opportunity for decision-makers, including politicians, to make a thorough assessment. It is also a crucial moment for the Malagasy population to wake up and remain united in the interest of the country. The aim of this work is therefore to highlight the place of entrepreneurship in a country like Madagascar and to promote its role. In this regard, recommendations are made to all decision-makers, notably politicians and the State, with a view to establishing a fair and efficient tax system in Madagascar.
Administration Consultancy Administrations, a Survival Methodology for Little and Medium Undertakings (SMEs): The Thailand Involvement
Authors: Niyomyaht Satit , Benjathikul Witthaya Benjathikul , Holamyong Prapaisri , Junthon Peera , Krimjai Chanyanat
Published: April 2024

The researcher wants to learn more about how small and medium-sized restaurants in Bangkok run their businesses. They need to discover out what makes a few businesses fruitful and what variables can offer assistance them remain in commerce. Thailand's experience. The researcher has created a plan by combining different ideas and studies about using technology for managing employees. They looked at how companies use technology for things like performance measurement and training. The goal was to understand how using technology for human resources affects how people use and accept it. They also explored how companies can use technology to manage their organization effectively. The comes about appeared the relationship between variables for victory in working little and medium sized endeavors SMEs , nourishment and refreshment benefit commerce bunches in Bangkok, survival for little and medium sized undertakings SMEs Y Thailand s encounter Discourse and conclusion it was found that the separation procedure X7 had a P value rise to to 0.000, a esteem less than 0.05 0.000 < 0.05). The client relations technique X8 had a P value break even with to 0.000, a esteem less than 0.05 0.000 < 0.05). That's , dismiss the invalid theory H0. Tolerating the auxiliary theory H1, meaning that the variables influencing the victory of working little and medium sized enterprises SMEs within the nourishment and refreshment benefit trade segment in Bangkok influence the survival of little and medium sized endeavors SMEs Thailand s encounter.
Multipurpose Military Spying and Bomb Detection Machine
Authors: Balasaheb Gunjal Jayshree , Rajendra Kulkarni Priya , Yogesh Nerikar Sakshi , Rajendra Shete Tejal , Kachare A. E.
Published: April 2024

In this paper, an innovative system is designed for multiple roles and combined with intelligence on a single platform. To tackle the continuous attacks, wars or threats in war fields we are preparing a movable machine. In this system, Raspberry Pi 3B+ is a main controller equipped with various types of sensors such as Metal sensor, ultrasonic sensor, smoke sensor, flame sensor, to detect the parameters. Camera is used to capture the real time images of the object or intruder. This system can send us the information of military area through the alert message and location.
Faculty development for simulation-based education on ophthalmology
Authors: Labuschagne Mathys , Filipe Helena Prior , du Preez Isabella
Published: April 2024

Faculty development should be a priority to sustain and support simulation-based education (SBE) programs. Clinical educators in ophthalmology should be provided with training opportunities in SBE. Facilitators may have different levels of simulation knowledge and experience. Faculty development programs must accommodate for novice, basic-level and advanced-level trainers as well as for technicians. The infographic summarises the second of four articles on good practices in simulation-based education in ophthalmology, but the principles can be applied to other disciplines as well.
Managing the Needs of Orphans and Vulnerable Children in Mainstream Rural Schools: An Ethnopsychology Informed Approach
Authors: Chidakwa Nowell , Khanare Fumane Portia
Published: April 2024

Orphans and vulnerable children (OVC) in mainstream rural schools encounter unique challenges stemming from loss, economic instability, and disrupted familial structures. Addressing their needs demands a comprehensive and culturally sensitive approach. This paper thus explored the use of an ethnopsychology framework to understand and address the diverse needs of rural children, emphasizing the importance of culturally sensitive interventions in mainstream schools. It also evaluated the effectiveness of ethnopsychological interventions and the role of community collaboration. This article used secondary data sources to understand how the ethnopsychology approach can be utilized as a potential sustainable intervention strategy for the needs of OVC in mainstream rural schools. The results show that OVC are well-served by the cultural resources that rural schools have in abundance from a cultural perspective. The study also emphasized the significance of cultural practices and beliefs in influencing community responses and developing resilience in assisting OVC. The study supported the care, protection, and psychosocial support to OVC as significantly influenced by family and relationship networks, community-based organizations, and traditional support systems. The paper made recommendations for improving rural schools’ response to OVC needs in light of cultural sensitivity. These include boosting collaboration between formal and informal support systems, creating community networks, fostering cultural adaptation and preservation, and giving community members more agency through programs that increase their knowledge and skills. This study underscored the significance of ethnopsychology principles of community and social connection in leveraging cultural resources, context-based and responsive interventions, and appreciating and sustaining existing indigenous knowledge systems in understanding and addressing the needs of OVC in mainstream rural schools. Understanding and supporting OVC contributes towards cultivating meaningful collaborations and transformative care of OVC in the Global South.

Keywords: Ethnopsychology, Cultural Sensitivity, Rural Community, Mainstream Rural Schools, Orphans and Vulnerable Children.
Storm Magic, Climate Change and Coral Fishing: Lope de Vega’s
Los cautivos de Argel
and Shakespeare’s
The Tempest
Authors: DE ARMAS FREDERICK
Published: April 2024

Over the centuries, critics of
The Tempest
have pointed to Iberia, some finding parallels with romances of chivalry and even Calderón’s
La vida es sueño
. Rather than return to well-known intertextual connections, this article turns to a
comedia
that for all appearances and purposes seems to have little to do with Shakespeare’s play. Lope de Vega’s early play,
Los cautivos de Argel
(1599), composed twelve years before Shakespeare’s work, tells of the life of a
morisco
on the Mediterranean coast, rather than that of a duke exiled with his young daughter to a mysterious island. Yet, by placing these two plays together, we can come to understand how climate change creates an environment so charged that witchcraft and magic are evoked in order to seek to make sense of it. Lope’s play turns to coral fishing, a craft so important at the time, as metaphor for the battles in the Mediterranean.
The Tempest
allows us to go deeper into coral fishing and the marvellous material that embraces the characters. The two plays help to provide both a complementary and a divergent vision of the conflicts in the Mediterranean, the peace that pervades in the islands dedicated to coral fishing and the consequences of climate change.
Del
bagoong
o ‘pescado dañado’ y el gusto higiénico de los filipinos en los
Sucesos
(México, 1609) de Antonio de Morga
Authors: HSU CARMEN
Published: April 2024

El presente trabajo estudia la representación que hace el oidor sevillano Antonio de Morga de dos gustos de los habitantes del archipiélago asiático en los
Sucesos de las Islas Filipinas
(México, 1609). Analiza cómo se manifiesta la actitud de Morga hacia los filipinos a través de su presentación de las costumbres culinaria e higiénica de aquellos. Se arguye que, a pesar de su reconocida imparcialidad, la imagen filipina de Morga revela un sistema de conceptos destinados a esquematizar cualquier mundo desconocido y no cristiano.
Far-ultraviolet to Far-infrared Spectral Energy Distribution Modeling of the Star Formation History across M31
Authors: Leahy Denis A. , Hansen Jakob , Hopkins Andrew M.
Published: April 2024

Our neighboring galaxy M31 has been recently surveyed at the far- and near-ultraviolet (FUV and NUV) with the UVIT telescope on AstroSat, which provides unprecedented sensitivity to young stellar populations. Here the UVIT data are supplemented with optical data, near-infrared (IR) data (Spitzer), and mid- and far-IR data (Herschel). The observations are processed to obtain the spectral energy distributions (SEDs) for 73 regions covering M31. The SEDs are modeled using the Cigale SED fitting code with old and young stellar populations. The old stellar population has an age of 12 Gyr across M31 but has longer formation times at further distances from the center. Significant dependences on the position of dust extinction, dust emission, and young stellar population properties are found. Across M31, there are regions with a low-age (≲100 Myr) young population and regions with an intermediate-age (∼1 Gyr) young population. The mass in the young population has declined by a factor of ∼10 for ages 800–100 Myr ago but has increased again for ages ≲100 Myr. This indicates that cold gas available for star formation has been changing over the past Gyr, whether it is caused by a changing merger rate, changing gas infall, or changes in the gas reservoir in M31. We find that the dust luminosity, based on far-IR observations, is driven by the youngest stars, which are primarily measured in the FUV and NUV bands.
The Radial Orbits of Ram-pressure-stripped Galaxies in Clusters from the GASP Survey
Authors: Biviano Andrea , Poggianti Bianca M. , Jaffé Yara , Lourenço Ana C. , Pizzuti Lorenzo , Moretti Alessia , Vulcani Benedetta
Published: April 2024

We analyze a sample of 244 ram-pressure-stripped candidate galaxy members within the virial radius of 62 nearby clusters to determine their velocity anisotropy profile β(r). We use previously determined mass profiles for the 62 clusters to build an ensemble cluster by stacking the 62 cluster samples in projected phase space. We solve the Jeans equation for dynamical equilibrium by two methods, MAMPOSSt and the Jeans inversion technique, and determine β(r) both in parametric form and nonparametrically. The two methods consistently indicate that the orbits of the ram-pressure-stripped candidates are increasingly radial with distance from the cluster center, from almost isotropic (β ≃ 0) at the center, to very radial at the virial radius (β ≃ 0.7). The orbits of cluster galaxies undergoing ram pressure stripping are similar to those of spiral cluster galaxies but more radially elongated at large radii.
Cosmic Sands. II. Challenges in Predicting and Measuring High-z Dust Temperatures
Authors: Lower Sidney , Narayanan Desika , Hu Chia-Yu , Privon George C.
Published: April 2024

In the current era of high-z galaxy discovery with JWST and the Atacama Large Millimeter/submillimeter Array, our ability to study the stellar populations and interstellar medium conditions in a diverse range of galaxies at Cosmic Dawn has rapidly improved. At the same time, the need to understand the current limitations in modeling galaxy formation processes and physical properties in order to interpret these observations is critical. Here, we study the challenges in modeling galaxy dust temperatures, both in the context of forward modeling galaxy spectral properties from a hydrodynamical simulation and via backwards modeling galaxy physical properties from mock observations of far-infrared dust emission. Using the simba model for galaxy formation combined with powderday radiative transfer, we can accurately predict the evolution of dust at high redshift, though several aspects of the model are essentially free parameters (dust composition, subresolution dust in star-forming regions) that dull the predictive power of the model dust temperature distributions. We also highlight the uncertainties in the backwards modeling methods, where we find the commonly used models and assumptions to fit far-infrared spectral energy distributions and infer dust temperatures (e.g., single temperature, optically thin modified blackbody) largely fail to capture the complexity of high-z dusty galaxies. We caution that conclusions inferred from both simulations—limited by resolution and post-processing techniques—and observations—limited by sparse data and simplistic model parameterizations—are susceptible to unique and nuanced uncertainties that can limit the usefulness of current high-z dust measurements.
An X-Ray Census of Active Galactic Nuclei in the Virgo and Fornax Clusters of Galaxies with SRG/eROSITA
Authors: Hou Meicun , Hu Zhensong , Li Zhiyuan
Published: April 2024

We present a uniform and sensitive X-ray census of active galactic nuclei (AGNs) in the two nearest galaxy clusters, Virgo and Fornax, utilizing the newly released X-ray source catalogs from the first all-sky scan of Spectrum-Roentgen-Gamma/eROSITA. A total of 50 and 10 X-ray sources are found positionally coincident with the nuclei of member galaxies in Virgo and Fornax, respectively, down to a 0.2–2.3 keV luminosity of ∼1039 erg s−1 and reaching out to a projected distance well beyond the virial radius of both clusters. The majority of the nuclear X-ray sources are newly identified. There is weak evidence that the nuclear X-ray sources are preferentially found in late-type hosts. Several hosts are dwarf galaxies with a stellar mass below ∼109
M
⊙. We find that contamination by nonnuclear X-ray emission can be neglected in most cases, indicating the dominance of a genuine AGN. In the meantime, no nuclear X-ray source exhibits a luminosity higher than a few times 1041 erg s−1, which might be owing to a steep intrinsic luminosity function. The X-ray AGN occupation rate is only ∼3% in both clusters, apparently much lower than that in field galaxies inferred from previous X-ray studies. Both aspects suggest that the cluster environment effectively suppresses AGN activity. The findings of this census have important implications for the interplay between galaxies and their central massive black holes in cluster environments.
Comprehensive assessment of demographic and occupational factors influencing burnout amongst community pharmacists in Jordan
Authors: Alshorman Danah Z. , Bazzari Amjad H. , Bazzari Firas H.
Published: April 2024

Job burnout is a major issue that influences employees’ performance, job satisfaction and their overall well-being. There is limited evidence that points towards poor profession status and general dissatisfaction amongst community pharmacists. This study aimed to investigate burnout and associated factors amongst community pharmacists in Jordan. The study was conducted via an online questionnaire composed of three main domains: demographics, occupational factors and Copenhagen burnout inventory (CBI) and a total of 400 community pharmacists participated. Total burnout scores amongst the participants were elevated (49.72 ± 16.65), with 43% exhibiting a high total burnout level. Burnout scores negatively correlated with age, exercise level, perceived sleep quality and financial status, while positively correlated with body mass index. Living alone status had elevated odds for high burnout compared to living with family or roommate(s). Regarding occupational factors, burnout level negatively correlated with the number of pharmacies the participants have worked in, working hours per day, how sufficient they perceive their salary to be and how much they enjoy working in a community pharmacy setting. On the other hand, a positive correlation was observed for the number of work days per week, requirement to work on national holidays and perceived workload. Moreover, working on night shifts and working alone both had higher odds for exhibiting high burnout levels. In conclusion, the results call for employers and policy-makers to take into consideration factors influencing burnout amongst community pharmacists for the development and implementation of interventional strategies to mitigate burnout and enhance the well-being of community pharmacists.
Les maladies infectieuses face à la responsabilité civile et à ses assurances
Authors: Vanbergen Renaud
Published: April 2024

Le droit de la responsabilité civile trouve à s’appliquer à tous les aspects de l’activité humaine en ce compris lorsqu’une personne en contamine une autre par une maladie infectieuse. Bien que les actions en responsabilité soient peu fréquentes en la matière, il y en a depuis longtemps et elles concernent toutes les maladies. Elles dessinent même une jurisprudence cohérente.
Assurances vie : les nouvelles mesures wallonnes s’alignent globalement sur le régime de l’impôt de succession flamand
Authors: Petit Marc
Published: April 2024

En vigueur depuis le 1 er janvier 2022, mais publié au Moniteur belge du 12 janvier dernier, le décret wallon « pour un impôt plus juste » 2 modifie notamment la fiction de legs visée à l’article 8 du Code des droits de succession en alourdissant la fiscalité des contrats d’assurance vie au nom de la justice fiscale et en s’alignant globalement sur le régime de l’impôt de ­succession ­flamand.
Assurances revenu garanti : premiers pas fébriles sur le chemin de l’oubli
Authors: Binon Jean-Marc
Published: April 2024

L’extension partielle, par un code de bonne conduite d’Assuralia entré en vigueur le 1 er février 2022, du droit à l’oubli institué, en avril 2019, par le législateur dans certaines assurances de personnes fournit l’occasion de porter un regard d’ensemble sur les principales lignes de force et de faiblesse ainsi que sur les perspectives d’évolution de ce dispositif juridique visant à améliorer l’accès des personnes frappées par un cancer ou une maladie chronique à des couvertures d’assurance répondant à un besoin privé ou professionnel essentiel.
Le mot et ses concepts. Note sur les significations de l'existence du Moyen Âge aux Lumières
Authors: Bardout Jean-Christophe
Published: April 2024

Le terme « existence » témoigne d’une équivocité remarquable, dont rendent compte ses concepts successifs. Nous esquissons quelques étapes d’une histoire mouvementée, qui conduit du contexte théologique de son invention, à l’avènement d’une acception anthropologique, aujourd’hui dominante. Inventée pour désigner l’être du Christ, l’existence sera investie par les médiévaux pour penser l’être créé : exister, c’est causer, ou être hors de ses causes, ou encore être hors de l’esprit (existence exposée). Cette double extériorité conduit à une impasse, que résout la modernité en faisant de l’être pensant, spécialement de l’ego cogito, le premier existant. Exister, c’est être senti, mais aussi sentir (existence imposée) : l’existence devient alors immanente et inhérente à la subjectivité humaine.
Les conditions d’existence – Karl Jaspers et les limites de la liberté existentielle
Authors: Calenge Simon
Published: April 2024

L’existence est l’être propre absolument singulier. Elle se réalise dans l’action existentielle, qui se distingue des autres actions en ce que, en elle, je prends une décision absolument propre, par laquelle je suis moi-même. L’existence ainsi comprise implique l’idée de liberté. Mais celle-ci est soumise à certaines conditions, qui peuvent faire qu’il ne dépend pas seulement de moi d’être moi-même. En s’appuyant sur la pensée de Karl Jaspers, le travail qui suit propose de découvrir ces conditions dans la réalité empirique même où l’existence a à se réaliser. Trois conditions de l’action existentielle peuvent ainsi émerger dans le réel : un cadre circonstanciel, une destination, et une invocation. En ces trois conditions, on découvre que l’existence est soumise non seulement à une conditio sine qua non , mais également à une conditio per quam .
Redéfinir le travail .
Authors: Gabaret Jim , Marty Céline
Published: April 2024

Depuis plusieurs décennies, la philosophie politique, les sciences sociales et le militantisme débattent de l’extension du concept de « travail » aux activités domestiques, sociales ou digitales. Pour la sociologue Marie-Anne Dujarier, c’est le signe d’un « trouble » du concept, qu’il faudrait abandonner. À partir des terrains sociologiques des communautés utopiques de Michel Lallement et des plateformes digitales d’Antonio Casilli, nous proposons une redéfinition qui en conserve l’unité, tout en permettant son extension à d’autres activités : le travail est une relation de commanditaire à commandité qui oriente de façon non-spontanée le second vers les besoins du premier, qu’il accepte de satisfaire contre compensation. Le concept est alors opératoire pour l’analyse comme les luttes sociales de reconnaissance.
Transgressions
Authors: Vaginay Denis
Published: April 2024

Transgresser est nécessaire pour accéder à l’autonomie. La société reconnaît ce besoin individuel tout en se protégeant de ses excès. L’individualisme a fragilisé les bases de l’organisation sociale et affaibli le système symbolique. Le sens de la cohésion sociale ne s’impose plus de lui-même. La société actuelle, sous couvert de protéger l’individualisme et la valeur du sujet, bâtit de nouvelles contraintes qui instaurent un nouveau système holistique. Flottants et perdus, ses sujets cherchent de nouvelles formes de transgression et un nouvel équilibre entre le groupe et les individus.
Transgressions
Authors: Portelli Serge
Published: April 2024

Dans une société hypernormée, les réponses, loin des affichages politiques, ne peuvent correspondre à la masse ingérable des transgressions. La violence et les supplices ont longtemps été au cœur de ces réponses. L’apparition des sciences humaines a faiblement modifié cette réalité. Leur apport modeste n’arrive pas à contrebalancer les courants sécuritaires qui imposent aujourd’hui une vision essentiellement répressive, fondée sur la prison. Des solutions existent pourtant, même si elles sont minoritaires, qui reposent sur le travail de la parole et l’analyse du sujet.
Le pouvoir maternel comme ressource politique dans les sociétés caribéennes
Authors: Brohan Soizic
Published: April 2024

Les sociétés caribéennes, façonnées par la colonisation et l’esclavage, ont donné lieu à la production d’une pluralité de normes de genre, tiraillées entre patriarcat et matrifocalité. Si les femmes recourent traditionnellement à l’image de la mère pour légitimer leur présence dans le champ politique patriarcal, le régime familial matrifocal spécifique à la Caraïbe, qui fait des femmes les cheffes de famille, invite à interroger le rapport particulier qu’elles entretiennent à la politique. Cette autorité féminine inédite fait du pouvoir maternel une ressource politique prisée des élues, comme le montre la comparaison des profils de Lucette Michaux-Chevry en Guadeloupe et de Portia Simpson Miller en Jamaïque. Si l’incarnation de la mère au pouvoir facilite leur entrée en politique, elles sont néanmoins toutes deux rattrapées par l’ordre du genre et attaquées sur leur féminité et leur maternité lorsqu’elles s’installent durablement en politique.
Le garçon bagarreur et la fille responsable
Authors: Selponi Yohan
Published: April 2024

Les actions de prévention des conduites addictives réalisées en milieu scolaire reposent la plupart du temps sur la mise en scène de risques associés à des consommations de psychotropes. Ces risques sont présentés comme différents s’agissant des garçons ou des filles. En montrant, de manière empirique, quelles sont les logiques pratiques et les régularités sociales qui fondent cette différence, cet article se propose de contribuer à l’analyse des luttes de définition des conduites conformes et déviantes associées au masculin et au féminin. Il est montré en particulier que la maîtrise des conduites masculines est un produit et un enjeu des luttes entre groupes genrés et entre classes sociales.
The study on the complex nature of a predator-prey model with fractional-order derivatives incorporating refuge and nonlinear prey harvesting
Authors: Nisar Kottakkaran Sooppy , Kumar G Ranjith , Ramesh K
Published: April 2024

The main objective of our research was to explore and develop a fractional-order derivative within the predator-prey framework. The framework includes prey refuge and selective nonlinear harvesting, where the harvesting progressively approaches a threshold value as the density of the harvested population advances. For memory effect, a non-integer order derivative is better than an integer-order derivative. The solutions to the fractional framework were shown to be existence, uniqueness, non-negativity, and boundedness. Matignon's condition was used for analysing local stability, and a suitable Lyapunov function provided global stability. While discussing the Hopf bifurcation's existence condition, we explored derivative order and refuge as bifurcation parameters. We aimed at redefining the predator-prey framework to incorporate fractional order, refuge, and harvesting. This kind of nonlinear harvesting is more realistic and reasonable than the model with constant yield harvesting and constant effort harvesting. The Adams-Bashforth-Moulton PECE algorithm in MATLAB software was used to simulate the proposed outcomes, investigate the impact on various factors, and analyse harvesting's effect on non-integer order predator-prey interactions.
A Robust Approach for Ulcer Classification/Detection in WCE Images
Authors: Dahmouni Abdellatif , Ait Abdelouahad Abdelkaher , Aderghal Yasser , Guelzim Ibrahim , Bellamine Insaf , Silkan Hassan
Published: April 2024

Wireless Capsule Endoscopy (WCE) is a medical diagnostic technique recognized for its minimally invasive and painless nature for the patients. It uses remote imaging techniques to explore various segments of the gastrointestinal (GI) tract, particularly the hard-to-reach small intestine, making it an effective alternative to traditional endoscopic techniques. However, physicians face a significant challenge when it comes to analyzing a large number of endoscopic images due to the effort and time required. It is therefore imperative to implement aided-diagnostic systems capable of automatically detecting suspicious areas for subsequent medical assessment. In this paper, we present a novel approach to identify gastrointestinal tract abnormalities from WCE images, with a particular focus on ulcerated areas. Our approach involves the use of the Median Robust Extended Local Binary Pattern (MRELBP) descriptor, which effectively overcomes the challenges faced when WCE image acquisition, such as variations in illumination and contrast, rotation, and noise. Using machine learning algorithms, we conducted experiments on the extensive Kvasir-Capsule dataset, and subsequently compared our results with recent relevant studies. Noteworthy is the fact that our approach achieved an accuracy of 97.04% with the SVM (RBF) classifier and 96.77% with the RF classifier.
Context-Aware IoT System Development Approach Based on Meta-Modeling and Reinforcement Learning
Authors: Hallou Amal , Fissaa Tarik , Hafiddi Hatim , Nassar Mahmoud
Published: April 2024

Integrating context awareness into the Internet of Things systems is essential for enhancing their adaptability to their context, particularly their user preferences and behaviors. This paper proposes an approach to model and develop context-aware self-adaptive IoT systems, capable of adapting their actions according to their users’ preferences. The approach consists of three main axes. The first axis involves establishing an overview of the system architecture that provides a high-level understanding of the various components of a context-aware IoT system. The second axis concerns the creation of a context-aware IoT systems meta-model, encapsulating the essential elements, relationships, and dependencies governing context awareness within the IoT system in a domain-independent manner. The third axis proposes a reinforcement learning reasoning process to enable intelligent decision-making within context- aware IoT systems. To validate the feasibility of the proposed approach, a simulation was conducted using the OpenAI Gym framework to emulate a context-aware smart home system. The results highlight the feasibility of the approach, and its potential to enhance real-life IoT systems’ awareness of their users’ context.
Determination of the Ink Layer Thickness, Taking into Account the Surface Roughness of the Printing Forum
Authors: Aliyev Eldar , Ismayilova Shabnam
Published: April 2024

In the article, the influence of the surface roughness of the printing plate on the thickness of the ink layer on the surfaces of the cylinders of the printing apparatus during ink transfer was studied. An analysis was made of the works devoted to the contact of the cylinders of the printing apparatus, as well as to the ink transfer and division of the ink layer. The influence of the surface roughness of the printing plate on the thickness of the ink layer, which ensures the quality of prints, has been established. A technique has been developed for determining the thickness of the ink layer, consisting of two stages, taking into account the roughness of the surface of the printing plate. At the first stage, the thickness of the ink layer on the printing plate after rolling, but before contact, was determined, and at the second stage, the thickness of the ink layer was determined on the offset blanket (deckle) after contact between the plate and offset cylinders. The thickness of the ink layer on the surfaces of the cylinders of the printing apparatus was estimated by the gravimetric-weight method. To estimate the amount of ink, the printing plate was weighed three times - before applying ink, after applying ink - before contact and after contact with the deckle. The difference in weights made it possible to have an idea of the mass of paint on the surfaces of the cylinders. On the basis of the experimental results obtained by the proposed method, the values of the thickness of the ink layers on the plate (on the form) and on the offset cylinders (on the deckle) were determined, taking into account the surface roughness of the printing plate. It has been established that at high roughness values, the amount of paint increases, which increases the thickness of the ink layer. The obtained results of the thickness of the ink layer on the deckle make it possible to determine the technologically necessary thickness of the ink layer on the print, which is the main factor for ensuring print quality. Taking into account the values of the surface roughness of the printing plate, it is possible to determine the technologically necessary pressure in the contact zone of the cylinders, which is an important factor for ensuring the technologically necessary thickness of the ink layer on the print. The results of the studies show that the data obtained are significantly different from the results of similar studies on the division of the ink layer between the cylinders of the printing apparatus and are more accurate, which is important for setting up the printing machine and ensuring the quality of prints.
The Use Hot Stamping to Restore the Efficiency Tie Rod Ball Pins Trucks
Authors: Pankratov Dmitriy L. , Shaparev Alexander V. , Pankratov Danil D. , Garayev Malik , Azizli Zarifa
Published: April 2024

The restoration parts made metallic materials by the method hot die forging is considered. Technological processes for restoring parts by hot stamping have a number advantages: shaping occurs in dies a simple design, existing forging and pressing equipment is used with the use standard automation and mechanization tools. In the process restoration parts by hot plastic deformation, it is possible to restore the shape and dimensions the worn surface, as well as to obtain the required microstructure the metal the restored part, which makes it possible to increase its service life due to subsequent thermo mechanical processing. A study was made the reasons for the loss performance the ball pins the torque rod, designs dies were developed for the restoration worn solid parts by the method hot forging. Parts are restored by creating targeted metal flows into the wear area using hot plastic deformation. It has been established that the hardness the metal in the middle part the restored part "Ball pin" increased by 30 ... 32% in relation to serial parts. When heated to the temperature forging and deformation the metal, the internal damage the metal accumulated inside the part is restored. This allows you to increase the durability the restored parts by 26…30%.
Formation of Geometric Parameters of the Surfaces of Cylindrical Parts during Waterjet Cutting
Authors: Simon Sylvio , Yusubov Nizami , Amirli Samir
Published: April 2024

The article is devoted to the study of the technological process of waterjet cutting of cylindrical parts on CNC machines. The results of experimental data on determining the accuracy of dimensional deviation, surface roughness, and taper of cylindrical parts depending on the circular milling of a water jet during waterjet cutting are presented.
Verification of the Adequacy of the Created Work Cycle Calculation Model of Marine Diesel Engine
Authors: Ismayilov Akif , Aliyev Alivahid
Published: April 2024

This article presents a model based on the analysis of the results of performing mathematical experiments and checking the adequacy of the results based on the mathematical model developed in the "MatLab" language using the existing methodology for calculating the duty cycle of the main and auxiliary ship diesel. The creation of such a model allows to analyze the processes that may occur in the working cycle without wasting time and materials, to predict in advance the effect of parameters on the efficiency of the engine.
Comparative Analysis of Dynamic Characteristics of Spherical and Eccentric Transmissions with a Double-Ring Satellite
Authors: Lustenkov Mikhail , Khalilov Isa , Moiseenko Andrey
Published: April 2024

The article presents the design and discusses the operating principle of a planetary roller gear with a satellite performing spherical motion. A comparative analysis of gears of eccentric and spherical types with the same kinematic and comparable geometric parameters was carried out. The comparison criterion is kinetic energy. Dependencies were obtained to determine the kinetic energy for both types of gears on the gear ratio, angular velocity of the driving link and geometric parameters. It has been established theoretically and confirmed by the results of computer modeling that the use of a spherical gear instead of a flat one makes it possible to reduce the radial dimensions of the drive, reduce energy consumption (starting torques) by 3...5 times and dynamic pressures in the satellite supports by 1,8 times.
Research of the Electromagnetical Part of Three-Phase Electromagnetic Vibrator of Low Frequency Vibrations
Authors: Guliyev Huseyngulu , Huseynov Ramiz , Yusifov Ramil
Published: April 2024

It is known that the stable operation of existing three-phase low mechanical frequency electromagnetic type vibrating devices depends on keeping the specific frequencies of the electrical and mechanical systems at the same value or close to each other. In the work process, the specific frequency of the mechanical system is variable depending on the mass, while the specific frequency of the electrical system remains practically constant. This causes unstable operation of the electromechanical system of the vibration device. In order to overcome this deficiency, the article considers the issue of expanding the frequency interval of the amplitude-frequency characteristic of the electrical system.
New Trends in Mechanical Engineering Technology
Authors: Huseynov Hasan
Published: April 2024

The article analyzed modern trends in mechanical engineering technology, especially focused on methods of software control of the accuracy of machining processes through technological primitives, which was first introduced into technological science by the author of the article. For formation of accuracy operation programs was used by means of synthesis of technological primitives of the conformity table . The correlation was installed between automated draft of technological operations and conduct of their accuracy. In the given automated system except operating conditions of cutting calculation of elastic deformations of technological systems, forecasting cutting accuracy, construction of cutting surface topography and determination the programes of operating process accuracy.
Histological analysis of the dermal and hypodermal layers of the face and correlation with high-frequency 24 MHz ultrasonography and elastosonography
Authors: Veronese Sheila , Costa Ezio , Portuese Antonella , Ossanna Riccardo , Sbarbati Andrea
Published: April 2024

Knowledge of the structure of the face is of fundamental importance. In fact, the face is treated in many areas of medicine, from dermatology, to maxillofacial surgery, to otorhinolaryngology, to ophthalmology, etc. and anti-aging aesthetic treatments, and those for the resolution of blemishes are on the increase. For ethical reasons it is not possible to take biopsy samples for facial analysis in the aesthetic field. The main aim of this study was to demonstrate that a high-resolution bimodal ultrasound examination, combined with elastosonography, could be a valid tool for pre-treatment morphological evaluation. To achieve this goal, skin samples were taken from the forehead, zygomatic area, nasolabial fold, upper and lower lip from cadavers to histologically characterize their structure. Subsequently, these same areas were evaluated in vivo using conventional B-mode ultrasound with a 24 MHz high-frequency probe, and elastosonography. The data obtained with the different techniques were compared, in order to state that modern ultrasound techniques can provide similar histological information. The analysis showed that the superficial hypodermis presented a different shape and structure in the different areas, with the exception of the areas of the upper and lower lip, which appeared similar. With aging, the forehead and zygomatic area showed a volumetric increase in the superficial hypodermic layer, while the lip showed non-structural changes. The morphology of the nasolabial fold remained unchanged. When it is not possible to perform histological investigations on the face, to understand its characteristics and dynamics, ultrasound with a 24 MHz probe would seem to be the most suitable method, while elastosonography could be a valid method for evaluating the stiffness of the structural components.
Atorvastatin reduces calcification in valve interstitial cells via the NF-κB signalling pathway by promoting Atg5-mediated autophagy
Authors: Chen Menghui , Liu Su
Published: April 2024

Aortic valve calcification (AVC) is a common cardiovascular disease and a risk factor for sudden death. However, the potential mechanisms and effective therapeutic drugs need to be explored. Atorvastatin is a statin that can effectively prevent cardiovascular events by lowering cholesterol levels. However, whether atorvastatin can inhibit AVC by reducing low-density lipoprotein (LDL) and its possible mechanism of action require further exploration. In the current study, we constructed an in vitro AVC model by inducing calcification of the valve interstitial cells. We found that atorvastatin significantly inhibited osteogenic differentiation, reduced the deposition of calcium nodules in valve interstitial cells, and enhanced autophagy in calcified valve interstitial cells, manifested by increased expression levels of the autophagy proteins Atg5 and LC3B-II/I and the formation of smooth autophagic flow. Atorvastatin inhibited the NF-κB signalling pathway and the expression of inflammatory factors mediated by NF-κB in calcified valve interstitial cells. The activation of the NF-κB signalling pathway led to the reversal of atorvastatin's effect on enhancing autophagy and alleviating valve interstitial cell calcification. In conclusion, atorvastatin inhibited the NF-κB signalling pathway by upregulating autophagy, thereby alleviating valve interstitial cell calcification, which was conducive to improving AVC.
96th National Congress of the Italian Society for Experimental Biology | L’Aquila, Italy, 25-28 April 2024
Authors: Editors The
Published: April 2024

96th National Congress of the Italian Society for Experimental Biology | L’Aquila, Italy, 25-28 April 2024
Rock engravings marking the Redan landscape in Gauteng, South Africa
Authors: Gouws Claudia
Published: April 2024

The ontological1 and epistemological2 foundations of reality, myths, beliefs, and practices in ritual behaviour have long been studied by scholars around the globe. There is no single understanding and representation of reality, as all that is real or existent within the universe is historically shaped by interdependent cultural and social processes and fear factors. Although the study of rock art is primary a branch of archaeology, cultural history also focuses on a past time and place, to study beliefs and ideas from a bottom-up approach and include the objects and experiences (sometimes unwritten) of the everyday life of the uneducated and less privileged. It is particularly well equipped to offer an understanding of the San myths, beliefs, ritual practices, and modes of representation of reality, as represented in their rock art. The Redan open-air rock engraving site is located on the Kookfontein farm, near the former Klip power station at Redan, close to a wetland that was formerly a rivulet that founded its way to the Klip River, a tributary of the Vaal River. The Klip-Vaal area is situated in the southern part of Gauteng, South Africa. Being part of the Late Stone Age hunting, domestic and ritual sites of the San people and later migrants it contains numerous documented and undocumented rock art sites. In line with interpretivism, the methodology is based on published and unpublished literature, as well as several on-site inspections of the site between 2002 and 2022. Authorship of the engravings at the Redan site is unconfirmed, although two dominant views regarding the cultural origin have emerged, namely a San hunter-gatherer shamanistic approach and the Koranna-Khoekhoen initiation site hypothesis.Contribution: The article contributes to the neglected historiography of the rock engravings in the Klip-Vaal region, in particular the Redan site, and the need to facilitate a comparison with similar rock engravings in southern Africa.