bluuebunny/crossref_metadata_2025 huggingface dataset:
Influencia de las interacciones farmacológicas entre medicamentos utilizados como alternativas terapéuticas para COVID-19
Authors: Dutan Torres Fausto Baldemar , Loor Rodríguez Adriana Kamila , Ramon Japón Geovanny Efrén , Maldonado Encalada Yomara Solange
Published: September 2024

El presente artículo analiza las interacciones farmacocinéticas y farmacodinámicas entre diversos fármacos empleados como abordajes terapéuticos para COVID-19. Dado que la pandemia ha motivado el uso de medicamentos antivirales, antibióticos, antipalúdicos, y otros, sin pruebas concluyentes de su eficacia, es crucial comprender cómo estas interacciones afectan la seguridad y efectividad de los tratamientos. A través de un enfoque descriptivo y relacional, se realizó una revisión exhaustiva de la literatura científica de los últimos cinco años, seleccionando estudios relevantes de bases de datos como PubMed, Scopus y Web of Science. Los hallazgos destacan que fármacos como atazanavir, ritonavir, y azitromicina pueden provocar interacciones adversas significativas debido a la inhibición o inducción de enzimas metabólicas. También se identificaron interacciones con transportadores de fármacos que alteran la absorción y excreción de otros medicamentos. Estos resultados destacan la importancia de considerar las interacciones medicamentosas en el tratamiento de COVID-19 para evitar efectos adversos y optimizar la terapia, contribuyendo así a la mejora de la seguridad y eficacia en el manejo de la enfermedad.
Design and Development of a Multimedia Reading Application for Pre-schoolers as a Foundation in the Area of TVET
Authors: Hashim Suhaizal , Mohamed Zahir Nur Zahira , Maleki Nuraini Hanisah , Amiruddin Mohd Hasril , Ismail Mohd Erfy , Nincarean Danakorn
Published: September 2024

The greatest time for this is during early childhood schooling, when children are just beginning to become aware of their job options and form an imagination about the careers, they are interested in. In order to prepare pre-schoolers for their future employment, Technical and Vocational Education and Training (TVET) aims to expand their knowledge and skill sets. Technology development also aids in these preschool students' knowledge and skill development in preparation for their future employment, particularly in TVET. At this preschool stage, their reading skills is essential for learning the TVET sector since it aids in their understanding of the subject that piques their interest. Yet, there are a number of reasons why they can struggle to read, including a lack of prior book experience, speech or hearing problems, and a lack of phonemic awareness. This design and development research (DDR) methodology was chosen to assist pre-schoolers in learning to read as a foundational skill in the field of TVET. The researcher focused on the development of multimedia applications for the teaching and learning process using a quantitative approach through ADDIE Model instructional design. The researcher used a random sampling technique to select three academic staff members with the required TVET educational credentials. This sample includes two academics with experience and skill in multimedia creation, as well as a preschool teacher from an appropriate educational institution, so the feedback gained is adequate to obtain precise comments and points of view. Data were acquired and assessed using frequency and percentage values based on a checklist form that was given. To facilitate data analysis, each item is categorised, and frequency information is quantified as a percentage. Professionals who believe that this multimedia application is useful as one of the self-learning mediums have responded favourably to the study's findings about how this multimedia application functions in terms of assisting pre-schoolers in learning to read from the aspects of content design, interaction, and interface. The study's conclusions can be used as a guide by anyone, especially when it comes to encouraging pre-schoolers’ TVET growth.
Current Research Trends of Scratch Block based Programming for K-12: A Systematic Review
Authors: Batni Badruliman , Junaini Syahrul Nizam , Sidi Jonathan , Mustafa Wan Azani , Awang Ismail Zamhar Iswandono
Published: September 2024

In the evolving landscape of K-12 education, the introduction of programming skills through block-based environments such as Scratch has become increasingly common. This approach meets the growing need for computer literacy among students, but its effectiveness in improving learning outcomes remains controversial. The aim of this paper is to systematically review and summarize current research on the use of Scratch as a teaching and learning tool in K-12 education. Using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) methodology, this paper analyses 27 relevant articles to assess the impact and use of Scratch in educational settings. The review aims to identify the current trends, methods and foci in Scratch-related educational research. Our results show that 17 studies focus on the use of Scratch in teaching CS and ICT subjects, while 10 examine its application in other academic disciplines. The review shows generally positive results of Scratch programming in an educational context. However, it also highlights the need for more comprehensive empirical research. This includes conducting studies with larger and more diverse student samples over longer periods of time to gain a deeper understanding of how Scratch programming can effectively improve learning outcomes in K-12 education.
Modelling and Analysis of Inhomogeneous Back-to-Back Schottky Junction Diode
Authors: Saad Norizam , Abd Rahman Shaharin Fadzli , Hashim Abdul Manaf , Mansor Ishak
Published: September 2024

Back-to-back Schottky diode (BBSD) is a simple device structure made from Schottky junctions that can be applied in various applications. In modelling and simulating the BBSD, the inhomogeneity of the barrier height at the Schottky interface should be considered. This paper presents device models and simulation result of an inhomogeneous BBSD. Two device models with different current spreading condition are considered. The distribution of the inhomogeneous barrier height is represented by Gaussian distribution. All the computation was done using Python programming software. When the standard deviation of the barrier height increases, the apparent barrier height that influence the electrical characteristic decreased. This is consistent with the reported experimental data. Device model that considers full current spreading showed 37.8% reduction of apparent barrier height at standard deviation of 100 meV. This is greater that the model with no current spreading. The ideality factor showed correlation with the standard deviation of barrier height, particularly when no current spreading is considered. At standard deviation of 100 meV, the ideality factor increased 2.6 %. The obtained non-unity ideality factor is associated to the significant fluctuation in the barrier height. The computed temperature-dependent current curves also showed good agreement with the reported experimental results. The device model can be a convenient tool to investigate the device operation and to validate the method used for extraction of Schottky barrier parameters.
A Comparison of Regression Models for Dissolved Oxygen Prediction in Koh Yor, Thailand
Authors: Lampang Warisara Na , Booranawon Apidach , Jindapetch Nattha , Sengchuai Kiattisak
Published: September 2024

Dissolved oxygen is an indicator of the health of a water source and aquatic life. In Koh Yor, fishermen encountered the problem of sea bass dying from changes in dissolved oxygen and did not have information on dissolved oxygen levels in the water. In this paper, a system and methodology for dissolved oxygen prediction in Koh Yor water, Thailand, for breeding sea bass in cages are introduced. The major objective of this study is to find the optimal regression models that achieve the best prediction accuracy, where soft sensor information including temperature, pH, and salinity data are used. The regression model is suitable for predicting DO in open systems with non-linear water quality data. The regression models for evaluation and comparison include Gaussian Process Regression (GPR), Medium Gaussian SVM (SVM), Least Squares Regression (LSR), and Medium Neural Network (MNN), respectively. The performances of the regression models are validated with the water data set of each village collected from Koh Yor, Thailand. Experimental results demonstrate that the GPR model provides the best prediction accuracy of 91.8%, where the prediction accuracy of all villages around Koh Yor is over 90%.
Local and Low-Cost Filter Media of Simple Water Filtration
Authors: Umar Said , Elma Muthia , Hidayat Achmad Syamsu , Mahmud Mahmud , Rahma Aulia
Published: September 2024

Commonly the Installation of a Drinking Water Supply System (SPAM) in Indonesia consists of Coagulation-Flocculation, Sedimentation, Filtration and Disinfection Processes as a complete Process Unit for surface feed water such as rivers or lakes. Similarly, the clean water treatment process in Banjarbaru, South Kalimantan, Indonesia uses intake water sources from irrigation. The intake water from irrigation used by the local Regional Drinking Water Company has good quality with a low turbidity value below the quality standards set by the central government. Based on these qualities, the right process unit to treat the water is by filtration only. Therefore, it is necessary to conduct evaluation and research to improve the efficiency of the process unit and the economic value of the water treatment. The purpose of this study is to investigate and evaluate irrigation feed water treatment by filtration using local and low-cost filter media. The filter reactor is designed with a rapid media filter type. The media is characterized using energy dispersive X-ray spectroscopy (EDS) and a scanning electron microscope (SEM) which is plugged in with EDS to find out the primary constituents and morphological information and after knowing the characterization of the media, and followed by tested the media placed in the water filter reactor with data collection. The results show that the size of the filter media has great effect on the quality of the processing water, which the smaller the media diameter conducted high selectivity and speed up filtration time. The greatest result obtained from testing feed water with media is 87.64%. Turbidity of the feed water sample process, which was previously 0.34 NTU, could be decreased to 0.02 NTU. Effective size of 0.4 mm and uniformity coefficient of 1.35 mm are the optimal allowable values.
Mobile Assistive Technology for Dyslexic Children: A Significant Review
Authors: Mohamad Mariam , Abdullah Noratikah , Rahim Norsafinar , Sanmugam Mageswaran , Takajo Hideyuki
Published: September 2024

In recent years, mobile assistive technology has emerged as a promising tool for supporting dyslexic children in their educational journey. This systematic review presents a comprehensive review of the literature on the utilization and effectiveness of mobile assistive technology in enhancing the learning experiences of dyslexic children. The review examines various types of mobile assistive technology and delves into the ways in which these technologies are tailored to meet the unique needs of dyslexic children. The article also explores the benefits and limitations of mobile assistive technology, shedding light on its potential to enhance reading, writing, and overall cognitive skills in dyslexic children. The systematic search of academic databases using Scopus, Web of Science and ERIC database yielded a comprehensive selection of studies and articles related to mobile assistive technology. After applied advanced searching approach using keywords which are mobile assistive technology, mobile technology, mobile application, mobile learning, dyslexia, the analysis revealed that e-learning played a pivotal role in maintaining educational continuity during the pandemic, offering flexibility and remote access to learning resources. The final finding data is (n=13) which review identified key themes, including the challenges of the digital divide, pedagogical adaptations, and the importance of educator preparedness. Expect validation decide to divide into four themes which is (1) Mobile Applications for Dyslexia Support, (2) Multisensory and Multilingual Approaches for Dyslexia Support, (3) Individualized Learning for Dyslexia Support and (4) Intervention and Stakeholders Perspectives. This significant review consolidates current knowledge on the use of mobile assistive technology, highlighting its potential to transform the educational landscape for this vulnerable population. As mobile assistive technology continues to evolve, it holds great promise for enhancing the educational prospects of dyslexic children, ultimately helping them unlock their full potential.
ECG Biometric Verification Incorporating Different Physiological Conditions
Authors: Mohd Azam Siti Nurfarah Ain , Sidek Khairul Azami , Dafhalla Alaa Kamal Yousif
Published: September 2024

The liveness detection criteria of biological signals have become one of the reasons it has been introduced as an ideal biometric recognition system. Electrocardiogram (ECG) is one of the biological signals that records the rhythms of human’s heart in the form of PQRST waves proves the uniqueness of the ECG itself making it suitable to be applied as biometric mechanisms. Previous research had shown the success of proving ECG as a biometric modality however most experimentations were done in normal conditions. Thus, to improve the current research, this work proposed a robust biometric identification by introducing ECG signals incorporating various physiological conditions. After the data collection of cycling, walking, climbing stairs, and jogging, the signals are pre-processed by using MODWT to remove unwanted noises produced during data collection process. Then, Pan Tompkins algorithm is used to segment the QRS complexes. The segmented signals are overlapped and align with each other to observe its pattern. Next, the QRS waveform is classified by using various class of SVM by considering two factors which are same physiological conditions and different physiological conditions. The subjects are compared between same and different physiological condition to validate the proposed method. The results show that the precision achieved up to 100%. In average, Gaussian SVM gives highest precision when compared to other type of SVM classifiers suggesting that Gaussian SVM is the most appropriate to be applied for person identification. Thus, the proposed method proves that biometric recognition can be performed regardless of different physiological conditions and can be applied in real life scenarios.
Identification of Stability Domains for Flow Parameters in Fused Filament Fabrication Using Acoustic Emission
Authors: Li Zhen , Fu Lei , Zou Xingfeng , Huang Baoshan , Gu Fengshou
Published: September 2024

In Fused Filament Fabrication (FFF), the state of material flow significantly influences printing outcomes. However, online monitoring of these micro-physical processes within the extruder remains challenging. The flow state is affected by multiple parameters, with temperature and volumetric flow rate (VFR) being the most critical. The study explores the stable extrusion of flow with a highly sensitive acoustic emission (AE) sensor so that AE signals generated by the friction in the annular region can reflect the flow state more effectively. Nevertheless, the large volume and broad frequency range of the data present processing challenges. This study proposes a method that initially selects short impact signals and then uses the Fast Kurtogram (FK) to identify the frequency with the highest kurtosis for signal filtration. The results indicate that this approach significantly enhances processing speed and improves feature extraction capabilities. By correlating AE characteristics under various parameters with the quality of extruded raster beads, AE can monitor the real-time state of material flow. This study offers a concise and efficient method for monitoring the state of raster beads and demonstrates the potential of online monitoring of the flow states.
 
Conflict of Interest Statement
The authors declare no conflicts of interest.
Investigation Of The Relationship Between Working Women's Leisure Time Attitudes And Leisure Time Satisfaction
Authors: Güler Mücahit , Bal Emine
Published: September 2024

The relationship between working women's leisure attitudes and leisure satisfaction has become an important research topic in modern society. This study aims to examine how women evaluate their leisure time after work and the impact of these attitudes on their leisure time satisfaction. The research analyzed the leisure activities of women from various age groups, professions and with different work experiences, their attitudes and the effects of these activities on their satisfaction. The sample of the research consists of 200 female employees living in Kastamonu. The findings show that there is generally no significant difference in values between married and single individuals. It has been determined that relaxation levels, one of the sub-dimensions of the Leisure Time Satisfaction Scale, are higher in the 18-29 age group compared to the 40+ age group and are higher in the group with 1-9 years of professional experience compared to the group with 20 years or more of professional seniority. This study provides important findings to understand these relationships in order to provide guidance for working women to use their free time more efficiently and satisfactorily.
Research on Pattern Generation and Innovative Design of Chinese Mongolian Embroidery based on AIGC Technology
Authors: Liu Jiatong , Xia Huimei
Published: September 2024

This study aims to investigate the potential of generative artificial intelligence (AI) technology in the generation and innovation of Mongolian embroidery patterns. It seeks to address the limitations of traditional embroidery pattern design, which is often time- consuming and inefficient, and to enhance the market competitiveness of Mongolian embroidery products. A substantial corpus of Mongolian embroidery patterns has been assembled, and image processing software has been employed to enhance the processing. A generative adversarial network (GAN) and a variational self-encoder model are constructed to learn and train Mongolian embroidery patterns, with the objective of generating new patterns that exhibit a combination of traditional style and modern design concepts. The experimental results demonstrate that the Mongolian embroidery patterns generated by AIGC technology retain the defining characteristics of traditional patterns in terms of form, while also exhibiting a greater degree of diversification in design style through the creative generation of the model.
Agricultural Data Analysis using Machine Learning: A Study on Dry Bean Classification
Authors: Shankar Archith , R Kadam Arushi , Senthilkumar Nishita , Venkatachalam Shradha A , . Shivandappa , Kumar Narendra
Published: September 2024

The classification of Dry Beans using various techniques such as Support Vector Machine (SVM) classification, K-means clustering, Decision Trees and Random Forest (RF) classification using an ipython notebook. To refine the model, performance matrix graphs of Cross entropy vs Epoch number, True value vs Predictive value and Accuracy vs Epoch. This analysis is often used in agricultural practices for improved crop management, increasing yield, resource optimization, enhancing sustainability etc.
Contemporary Issues and Challenges of Institutional Finance in Bihar: An In-depth Study
Authors: Sarkar Sukanta , Chaudhury Suman Kalyan , Rath Sabyasachi , Prasad Pattnaik Lingarja
Published: September 2024

It has been observed that the Public sector banks in Bihar are prominent in institutional credit and deposits. They play a vital role for expansion of the economic activities and filling the credit gaps. The number of customers visiting the banks has come down due to the use of technology in their functioning. Wide spread use of debit cards, credit cards, ATM cards, UPI transactions, services of CSPs, internet and mobile banking services has changed the banking habits of the customers. The network of banks through Grahak Seva Kendras or Customer Service Points is expanding rapidly. Public sector banks lead in deposits and advances in comparison to the private banks, cooperative banks and other small finance banks. Commercial banks have twice non-performing assets vis- a- vis the regional rural banks. The state has enormous constraints due to the prevalence of weak governance, lack of infrastructure, complex social stratification, persistent poverty, etc. High dependence on public sector banks, credit gaps, credible underwriting digital innovations and high non-performing assets are the major challenges before the institutional finances in Bihar.
Artificial Intelligence as an opportunity or a curriculum trajectory in the 21st century? Towards embracing unfamiliar discourses
Authors: Dube Bekithemba , Setlalentoa Wendy
Published: September 2024

This theoretical paper contributes to the ongoing debate on Artificial Intelligence (AI) in relation to curriculum and implementation in post-colonial South Africa. We contend that AI, as perceived, conceived, and implemented within the curriculum space, presents an ambivalent terrain marked by fear, uncertainty, and anxiety among stakeholders, as its presence has interfered with the everyday work of educational practitioners. Cognizant of this problem, we locate our theorisation within the framework of Sustainable Learning Environments and address two questions: (1) What are the opportunities of AI in relation to the curriculum in post-colonial South Africa? (2) What challenges are faced in the implementation of AI, especially in rural contexts where technological opportunities are not equivalent to those in urban areas? In this paper, we highlight that while AI tools like ChatGPT may appear daunting for integration into teaching and learning—potentially undermining educators' authority and raising ethical concerns—there is an urgent need to rethink and restructure teacher education. This restructuring should align with the evolving demands of an AI-enhanced curriculum and address the shifting expectations in educational contexts.
Análisis comparativo de inclusión financiera de los productores de café en Colombia en los departamentos de Huila y Tolima 2021-2023
Authors: Izquierdo-Mayorga Juan Manuel , Gómez-Guerra Valeria , Leibovich José , Buitrago-Buitrago Natalia
Published: September 2024

Este artículo presenta un análisis comparativo de la inclusión financiera formal e informal de los productores de café en los departamentos de Huila y Tolima en Colombia. Esta investigación se realizó con el fin de conocer los posibles efectos en la formalidad financiera de los caficultores ante los choques exógenos por el aumento en el precio del café, la variabilidad climática (Fenómeno de la Niña) y los impactos de la mayor inflación y la subida de tasas de interés post-pandemia que experimentó la caficultura colombiana entre los años 2021 y 2023. El estudio aprovecha la información del panel de productores construido en el marco de la Alianza por la Economía Formal e Inclusiva (Alianza EFI) en su componente rural*. Los resultados muestran que los choques exógenos que experimentó la economía cafetera no alteraron la estructura de inclusión financiera de los caficultores, carac- terizada por el alto uso del efectivo, el bajo acceso a las cuentas de ahorro formal y la importancia del Banco Agrario en el ecosistema del crédito formal. No obstante, los choques exógenos, sí se tradujeron en una menor inclusión financiera formal, tanto por la vía del ahorro como por la del crédito. Adicionalmente, a partir del uso de un modelo de regresión logística multinomial, se confirmó que el nivel de ingresos, la edad del productor, los años de educación formal y el acceso a internet son aspectos definitivos en el crecimiento y la permanencia de la formalidad de los caficultores en el sector financiero.
The Benefits of Computer Conferences in Distance Education: An Assessment
Authors: Adeyeye Gbenga Michael
Published: September 2024

This study examined the positive influence of computer conferencing on distance education, particularly its capacity to foster a sense of community, collaboration, and interaction among learners. The study employed semi-structured interviews, focus groups, observations, and document analysis to investigate the experiences of students, instructors, and educational technologists of Delar College of Education through a qualitative research design. The primary findings indicated that asynchronous communication provides convenience and flexibility, whereas synchronous communication enables immediate engagement and dynamic discussions. Additionally, computer conferencing facilitates the interchange of information at a rapid pace, reduces feelings of isolation, and facilitates the development of diverse learning environments by facilitating detailed discussions through sub-conferences. The research identified substantial advantages of computer conferencing, but it also emphasized potential constraints, including the necessity for effective facilitation and technological dependence. The research emphasizes the transformative potential of computer conferencing in improving the distance education experience.

Keywords: Educational Technology, Computer Conferencing, Interaction, Collaboration Distance Education, Online Learning, Qualitative Study
PSR B0943+10: Mode Switch, Polar Cap Geometry, and Orthogonally Polarized Radiation
Authors: Cao Shunshun , Jiang Jinchen , Dyks Jaroslaw , Hao Longfei , Lee Kejia , Li Zhixuan , Lu Jiguang , Pan Zhichen , Wang Weiyang , Wang Zhengli , Xu Jiangwei , Xu Heng , Xu Renxin
Published: September 2024

As one of the paradigm examples to probe into pulsar magnetospheric dynamics, PSR B0943+10 (J0946+0951) manifests representatively, showing a mode switch, orthogonal polarization, and subpulse drifting, frequently studied below 600 MHz. Here, both integrated and single pulses are studied at a high frequency (1.25 GHz) with FAST. The mode switch is studied using a profile decomposition method. A phase space evolution for the pulsar’s mode switch shows a strange-attractor-like pattern. The radiative geometry is proposed by fitting polarization position angles with the rotating vector model. The pulsar pulse profile is then mapped to the sparking locations on the pulsar surface, and the differences between the main pulse’s and the precursor component’s radiative processes may explain the X-ray’s synchronization with radio mode switch. Detailed single pulse studies on B0943+10's orthogonally polarized radiation are presented, which may support certain models of radiative transfer of polarized emission. In particular, the difference in orthogonal polarization modes’ circular polarization might reflect the cyclotron absorption in pulsar magnetospheres. B0943+10's B and Q modes evolve differently with frequency and have different proportions of orthogonal modes, which indicates possible magnetospheric changes during mode switch. For Q mode pulse profile, the precursor and the main pulse components are orthogonally polarized, and are probably originated from different depths in the magnetosphere. The findings could impact significantly on the pulsar electrodynamics and the radiative mechanism related.
Impact de la Covid-19 sur la numérisation des chaînes d’approvisionnement alimentaire
Authors: Mongo Michelle , Aouinait Camille , Le Son Thi Kim
Published: September 2024

La mondialisation des échanges caractérisée par une massification des flux a bouleversé l’industrie alimentaire, en particulier les chaînes d’approvisionnement alimentaire (CAA). Elles doivent répondre à des exigences accrues des consommateurs en qualité, sécurité et durabilité des produits. Se pose la question de savoir comment cette filière y répond. Suivant l’intérêt lié des Sciences de Gestion et le peu d’analyses quantitatives, l’objectif est de proposer une analyse bibliométrique sur les CAA et leur évolution selon l’irruption de la Covid-19. Les résultats montrent en particulier une hausse considérable de la littérature en Gestion traitant des CAA, notamment entre 2020 et 2022. Les co-occurrences de mots-clés montrent l’émergence de thématiques autour de la numérisation et des trois piliers du développement durable. Enfin l’analyse détaille comment la littérature managériale des CAA est inspirée des fondements théoriques des Sciences Économiques et de Gestion. Ces résultats mettent en lumière l’évolution de la filière au regard des nouveaux enjeux sociétaux.
Du sentiment de solitude à la thérapie de groupe. Atelier autour de la métaphore de la tente canadienne
Authors: Messaud Charles , Fourez Bernard
Published: September 2024

À partir des propos de Sébastien Dupont situant le sentiment de solitude comme un idiome de détresse lié au principe d’individualisation de notre culture occidentale, les auteurs s’interrogent sur la fréquence de ce sentiment dans une culture qui n’a jamais donné autant de moyens pour ne pas être seul. L’article retrace quelques traits de notre culture individualisante afin de mieux les appréhender comme conditions du déploiement de cette souffrance. Ils reprennent la phrase de Marcel Gauchet : l’individu contemporain est un être symboliquement et cognitivement déconnecté du Tout. Ils décrivent ensuite un atelier métaphorique pratiqué avec un groupe de patients sur le thème de la tente canadienne comme image de la condition humaine. Cette participation à cette métaphore est vue comme une expérience d’être habité par une représentation d’un tout comme moyen de gérer la souffrance associée à ce sentiment de solitude.
Geotechnical investigations of lead-silver ore processing residues at the Auzelles site, Auvergne (France)
Authors: Sidibé Diaka , Diallo Mamadou , Konaté Ahmed Amara , Zaheer Muhammad
Published: September 2024

Mining operations generate a significant quantity of mining waste in the form of sterile rocks and processing residues. These mining wastes are typically placed on the surface and can cause geotechnical and geochemical disturbances, as well as contaminants in surface water (through runoff) and groundwater (through infiltration), thus posing environmental risks. This article aimed to characterize the geotechnical properties of lead-silver ore processing residues at the Auzelles site in order to assess their stability and propose recommendations for their management and rehabilitation. The adopted methodology included in situ tests (such as density measurement and permeability) and laboratory analyses (grain size distribution, moisture content, methylene blue test, direct shear test, and standard Proctor test). The results showed a wet density of 1.63 g/cm3 for the residues compared with 1.65 g/cm3 for the waste rock, as well as a permeability of the residues measured at 5.5 × 10-5 m/s, indicating significant drainage capacity. Laboratory analyses revealed that the samples were primarily composed of very silty sands and gravel, classified as B5 according to the Guide to Road Settlements. The cohesion of the residues was found to be zero, while the internal friction angle varied between 28° for the residues and 30° for the foundation soils. These geomechanical properties, particularly density, lack of cohesion, and friction angle values, raise concerns about the long-term stability of the residues. Due to their high permeability and lack of cohesion, the residues are susceptible to mass movement and erosion, which may exacerbate contamination risks. Therefore, it is essential to integrate these parameters into any potential residue stability analysis. Proactive management, based on these results, requires the implementation of appropriate rehabilitation techniques, such as drainage optimization and incorporation of vegetation covers, to minimize environmental impacts and ensure the long-term sustainability of mining waste structures.
A Bibliographic Gathering: Reflecting on "Queer Bibliography: Tools, Methods, Practice, Approaches"
Authors: Noble Malcolm , Pyke Sarah
Published: September 2024

In February 2023, we convened the first workshop dedicated to queer bibliography. The scholarship showcased during the symposium and emerging from it was and is significant, but perhaps at least of equal importance has been the development of a vibrant, supportive intellectual and practice-based community that has coalesced around this area. Such was the importance of this experience and meeting place that by consensus what was intended as a one-off workshop has inaugurated an annual, international movable conference. In this article, we reflect on how the workshop and its arrangement responds and relates to queer and feminist critiques of higher education. Starting from marginal and precarious positions, we consider how we worked to build a safe space for discussion and to foster a community of care. We reflect on how together, as well as producing scholarship, we endeavored to practice radical openness and create the conditions for queer thriving.
Propostas de políticas públicas para ação policial armada
Authors: Tedesco Wedy Miguel , Daflon Barrozo Paulo , Lucille Owens Lisa
Published: September 2024

A partir de análise interdisciplinar e comparada, notadamente de experiências concretas vivenciadas por outros países, o artigo reflete sobre a construção de uma política pública para a ação policial armada no Brasil.
Constitucionalidad del Derecho Internacional de la Seguridad Social regional
Authors: Mendizábal Bermúdez Gabriela
Published: September 2024

El reconocimiento normativo que se le da a la seguridad social a través de las cartas magnas de Latinoamérica contribuye a la justiciabilidad de ese derecho humano.  Sin embargo, poco se ha estudiado el impacto que tiene ese reconocimiento constitucional para el desarrollo del Derecho Internacional de la Seguridad Social (DISS) regional que es la garantía legal del derecho humano a la seguridad social de los migrantes. En ese sentido, este artículo presenta un breve estudio del DISS regional y analiza el marco constitucional del derecho humano a la seguridad social en algunos ejemplos de América Latina, resaltando el importante papel de la Corte Interamericana de Derechos Humanos, con el objetivo de comprobar que la teoría emanada del neo constitucionalismo social proporciona nuevas perspectivas al Derecho Internacional de la Seguridad Social regional.
Da estética à ética: senso comum e imaginação na ciência e na hermenêutica do direito
Authors: Martins Ricardo Evandro Santos , Filho Gilberto Guimarães
Published: September 2024

O objetivo geral do artigo é conciliar a leitura de Hans-Georg Gadamer por Jesús Conill Sancho com o conceito de imaginação ética desenvolvido por Hannah Arendt. Como se vê pelo decorrer do texto, a preocupação em se apropriar da Crítica da faculdade do juízo (1790) é o ponto de encontro entre estes autores e Arendt. Cientes da ousadia em ir muito além do problema de “hermeneutizar” a “terceira Crítica”, como fez Conill Sancho, a fim de trazer nova luz à interpretação de Immanuel Kant por Gadamer, tentamos também mostrar que a questão da interpretação e aplicação do direito implica em uma questão de colocar-se no lugar do outro e de adentrar ao debate público (Arendt). O artigo, então, tem por objetivo específico colocar à luz a conexão íntima entre ética hermenêutica, ciência do direito e a aplicação das normas jurídicas com a noção de mentalidade alargada. O problema a ser respondido neste artigo é: como a hermenêutica, entendida como tradição ou senso comum ético compartilhado, pode servir como condição e, ao mesmo tempo, limite à neutralidade científica e à discricionariedade interpretativa do direito? E as hipóteses são: a) a de que há um ethos de fundo à ciência do direito e à hermenêutica jurídica; e b) de que este ethos possui dimensão política, viabilizada por aquilo que Arendt chamou de mentalidade largada, imaginação ética e companhia. Justificamos este resultado de pesquisa pela necessidade de se avançar nas críticas à pretensão de neutralidade científica na teoria do direito e à pretensão de se separar o direito e a ética quanto à interpretação jurídica. Em resumo, contrariando o paradigma epistemológico neokantiano das ciências humanas, presente em Max Weber, Hans Kelsen e em Herbert Hart, dentre outros juspositivistas que adotam a tese da separação entre direito e moral, e partindo dos referidos avanços de Conill Sancho na tentativa de “hermeneutizar” o Kant da “terceira Crítica”, o artigo tenta mostrar como a formação de conceitos científicos e a interpretação/aplicação das normas jurídicas envolvem a “imaginação ética” (Arendt) constituída a partir do senso comum. O método utilizado para a elaboração deste artigo é o compreensivo nos termos da tomada da consciência hermenêutica, elaborada desde as críticas de Gadamer, em seu Verdade e Método (1960), à metodologia das ciências humanas do século XIX. Em outras palavras, o método usado aqui parte da experiência com a verdade interpretativa desvelada da leitura da bibliografia selecionada, ainda que tenha sido usada para revisitar criticamente a própria hermenêutica filosófica de Gadamer. E os procedimentos metódicos de pesquisa é o bibliográfico e o qualitativo.
Harmonizing Stakeholder Synergy for Operational Excellence
Authors: Cingöz Kübra Nur , Durmaz Vildan
Published: September 2024

The surge in airline transportation since the early 2000s, buoyed by incentives like fuel discounts and landing-stopover benefits, has necessitated the expansion of existing airports for sustainable growth. Sabiha Gökçen Airport, experiencing rapid air traffic escalation since 2014, grapples with substantial waiting queues for both aircraft and passengers. Addressing these challenges requires effective stakeholder communication and collaboration. This study underscores the pivotal role of communication in mitigating issues arising from escalating aircraft traffic at Sabiha Gökçen Airport, emphasizing that sustainable growth cannot be attained amidst prolonged waiting times. The study interrogates the extent to which increased capacity influences operational productivity and explores strategies for leveraging enhanced capacity through effective stakeholder collaboration
A policy response to antimicrobial resistance in the South-East Asian Countries: Implications for Sri Lanka’s Health Policy Reforms
Authors: Zayed Bassem , Haputhanthri Thiraj , Rijal Suman , Singh Alaka
Published: September 2024

No abstract available
Understanding chromoblastomycosis in Sri Lanka; insights into fungal aetiology and antifungal susceptibility patterns
Authors: Thabrew Harshani  Priyanwada Mendis Jayawardena , Perera Preethi , Jayasekera Primali Irosha
Published: September 2024

Introduction: Chromoblastomycosis is a chronic disfiguring fungal infection of the subcutaneous tissue found mainly in the socio-economically marginalized population in the tropical and sub-tropical regions, characterized by the presence of sclerotic cells. This study was done with the aim of identifying the antifungal sensitivity patterns of the causative agents of chromoblastomycosis in Sri Lanka from 1992 to 2019.Methodology: Study was done on the stored isolates received from patients with chromoblastomycosis since 1992 to 2019, to the Mycology Reference Laboratory of Medical Research Institute, Colombo. Isolates were revived by subculture on Potato dextrose agar. Identification was done phenotypically. Antifungal sensitivity testing was performed by E test method. Available demographic and clinical data were analysed.Results: Of the 74 isolates, 71 (96%) were caused by Fonsecaea pedrosoi. Mean MIC for the antifungals tested were lowest for posaconazole 0.015 μg/ml followed by itraconazole 0.225 μg/ml, and voriconazole 0.768 μg/ml while amphotericin B demonstrated complete resistance with mean MIC of 30.591 μg/ml. No statistically significant differences were noted on the antifungal sensitivity of the isolates from 1992 to 2004 and 2005 to 2019.Conclusions: Fonsecaea pedrosoi was the commonest causative agent causing chromoblastomycosis in the studied population. Posaconazole demonstrated the lowest MIC values for the tested isolates followed by itraconazole and voriconazole. Amphotericin B demonstrated very high MIC values which were likely to result in clinical failure upon treatment. MIC values demonstrated minimal fluctuations throughout the tested time.
Antimicrobial resistance in Staphylococcus aureus, Enterobacterales, and Pseudomonas spp. clinical isolates at a Teaching Hospital in Sri Lanka
Authors: Senanayake Nilanthi , Sathsarani Gangani , Assella Palinda , Abeygoonawardena Harshi , De Silva Nelun
Published: September 2024

Background: Antimicrobial resistance (AMR) is a signifi-cant global health issue in the 21st century, posing a serious threat to human health.Objectives: This study was to determine the burden and predictors of AMR and multidrug resistance (MDR) among bacterial pathogens isolated from specimens submitted to the diagnostic laboratory of a hospital in Sri Lanka.Methodology: This retrospective study used laboratory records of 1,204 clinical specimens submitted for bacterial culture submitted to the diagnostic laboratory of Neville Fernando Teaching Hospital in Sri Lanka for bacterial culture and sensitivity testing between October 2021 and May 2024. Records from specimens positive for Enterobacteriaceae, Staphylococcus aureus, or Pseudomonas spp. isolates were included for analysis.Results: Number of samples which yielded Gram negative Enterobacterales was 758 (62.95%). Of these 499 (65.83%) were ESBL and 59 (7.78%) were carba-penemase producers. Among the 214 participants, Staphylococcus aureus was isolated from 206 (96.26%) participants. This included 74 (35.92%) participants who were colonized with Methicillin Resistant Staphylococcus aureus (MRSA) isolates and Methicillin Sensitive Staphylococcus aureus (MSSA) 132 (64.07%). Among Pseudomonas spp. isolates, 29.48% were resistant to one or more aminoglycosides, 29.48% were resistant to a fluoroquinolone and only 8.54% were resistant to carbapenems.Conclusion:  This study shows that there is a high level of microbial resistance in Sri Lanka. The high levels of extended-spectrum cephalosporin resistance and multi-drug resistance (MDR) among Enterobacterales observed in this study are of concern. However, the relatively low levels of methicillin-resistant Staphylococcus aureus (MRSA) and MDR S. aureus, as well as the very low levels of carbapenem resistance among Pseudomonas spp. isolates, are encouraging.
Experience oExperience of an antimicrobial stewardship programme in a tertiary care hospital in Sri Lankaf an Antimicrobial stewardship programme in a tertiary care hospital in Sri Lanka
Authors: De Silva Wathudurage Himali Sureshika , Jayatilleke Sashika Kushlani , Gamage Mithilie Pramidika Kananke , Kuruppumudalige Dona Tharangani
Published: September 2024

Introduction: Hospital-based antibiotic stewardship programmes are helpful to optimise the treatment of infectious diseases and to prevent the development of antibiotic resistance. The rise in multi-drug resistance in Sri Lankan hospitals including carbapenem-resistant organisms emphasises the need for implementation of effective AMS programmes and planned in national strategic plan to combat antimicrobial resistance. A sustainable approach towards an effective AMS pro-gramme is continuously needed. The data on experience in implementing AMS programmes in Sri Lanka is scares.Objective: To share the experiences and challenges faced while implementing an AMS programme in a hospital,.d. Guidelines on empirical and prophylactic use of anti-microbials and common infections were distributed to each unit. A list of antimicrobials prepared according to WHO AwaRe classification and drug chart designed for documentation of optimal prescribing.Results: There was a 27.3% reduction in mean carba-penem consumption after initial implementation and the consumption is gradually rising. 36% decrease in carbapenem resistance rate in Acinetobacter species, 33% reduction in carbapenem-resistant Pseudomonas species was observed. The point prevalence of anti-microbial use was found to be 45.5% and 49% in 2023 and 2024 respectively. The commonest indication for antimicrobial use in prescriptions was community-acquired infections. There was a reduction in continuing antibiotics for surgical prophylaxis after implementation of AMS programme.Conclusion: For successful implementation of an AMS programme in community acquired drug resistance also should be addressed. In hospital setting continuation of surgical prophylaxis is an area which can be improved easily. Adequate staff and time allocated for AMS activities will be beneficial for sustainable programmes.
Sri Lanka’s journey through antimicrobial resistance – gaps and gains
Authors: Chandrasiri Nambage Shirani , Vidanagama Dhammika Sirisena , Gunaratna Gayana Pradeepi Subasinghe , Elwitigala Jayanthi Priyanganie , Patabendige Charini Geethika Upulkanthi Arukattu , Jayatilleke Shashika Kushlani
Published: September 2024

No abstract available
Analysis of Download and Rotor/Airframe Interactions in Hover
Authors:   Continuum Dynamics Inc., Quackenbush Todd , Whitehouse Glen , Silbaugh Benjamin , Danilov Pavel
Published: September 2024

The losses in rotorcraft hover performance from airframe download have long been an important issue in rotorcraft design. However, given the increased focus on advanced tiltrotor, compound, and coaxial configurations, there is a more pressing need for physics-based prediction methods suitable for use early in the design cycle. In addition, airframes that feature substantial blockage of the main rotor downwash will typically involve significant interaction with the rotor, having an important effect on installed rotor performance. This paper centers on an assessment of the ability of two contemporary analysis tools to address the modeling of fuselage/rotor interaction in hover, with a focus on cases involving a single main rotor. Correlation studies using a comprehensive rotorcraft analysis and a cut-cell octree Cartesian CFD method are presented, to assess their ability to predict installed hover performance and download at a level sufficient to support conceptual and preliminary design. While significant limitations and development needs remain, these models produce encouraging results when applied to analysis challenges relevant to the study of new configurations.
ONERA and DLR Contributions to Improve Environmental Friendliness of Rotorcraft
Authors:   DLR, Pahlke Klausdieter ,   ONERA, Demaret Blanche
Published: September 2024

This paper is providing an overview of the ONERA and DLR results in the Clean Sky Green Rotorcraft project (2008-2016). An active twist technology and tools for passive blade design and optimization ranging from single to multiple objectives are presented for improving the main rotor blade performance. Technologies for drag reduction of non-lifting components (rotor head, blade stubs and fuselage) including active blowing, vortex generators and passive design show the potential of an overall drag reduction of slightly more than 6% (confirmed by wind tunnel tests). The design of noise abatement flight procedures and the corresponding flight tests are described obtaining up to 60% reduction of the area exposed to a certain noise level. Finally the interface between the Green Rotorcraft ITD and the overall Clean Sky JTI Technology Evaluator is described.