bluuebunny/crossref_metadata_2025 huggingface dataset:
Planejamento probabilístico de sistemas híbridos de energia elétrica com análise de risco
Authors:   , Kitamura Daniel Toledo
Published: November 2022

O presente trabalho apresenta uma metodologia para o planejamento de sistemas híbridos de energia elétrica (SHEE) com análise de risco, considerando a política regulatória aplicada a sistemas de distribuição do Brasil (Resolução Normativa 482/2012 da ANEEL). Para tal, o problema é modelado como programação estocástica considerando incertezas associadas às variáveis aleatórias do problema: índice de claridade para o sistema fotovoltaico, demanda de carga, preço de combustível para geração termoelétrica e tarifa de energia. No modelo proposto, cenários são definidos para considerar as variáveis aleatórias citadas de forma combinada, ou seja, uma dada combinação dessas variáveis resulta em um cenário. Adicionalmente, a metodologia inclui ferramenta de análise de propensão ao risco econômico de cada consumidor. A metodologia determina o número e tipo de painéis fotovoltaicos, a capacidade de geração a diesel e de sistema de armazenamento a bateria, em que o objetivo é minimizar os custos de investimento e operação ao longo do horizonte de planejamento. Estudos de casos envolvendo dois consumidores comerciais de grande porte são introduzidos para avaliar a metodologia proposta. Para modelar e resolver o problema de otimização resultante, utilizou-se o modelo de desenvolvimento de código aberto, Pyomo, baseado em linguagem Python, em conjunto com o solver Gurobi. Uma importante conclusão é que a metodologia pode auxiliar consumidores na tomada de decisão sobre o investimento em SHEE
The industrial organization of public higher education in Brazil: market structure, behavior, and efficiency
Authors:   , Freire João Augusto Ferreira
Published: November 2022

Higher education is extremely important for economic and social development. However, the higher education product has intrinsic traits that require State intervention in the sector, which hinders the analysis of the industry via traditional methods of the Economics discipline. This study aimed to carry out an analysis of competition in the Brazilian higher education sector, focusing on high quality institutions and using the modus operandi of antitrust authorities around the world as a baseline. Specifically, analytical techniques from the field of Industrial Organization have been employed, in addition to the application of non-parametric method of data envelopment analysis to gauge efficiency in the industry. Results showed that public higher education institutions (HEIs) face competitive pressure from high-quality private HEIs. Additionally, relevant markets present a wider scope, with either regional or national range, depending on schools’ quality. In general, markets are not concentrated and do not raise anticompetitive concerns. Independent admissions exams, product differentiation, and price discrimination were identified as the main conducts carried out by schools. Finally, data envelopment analysis shows that average efficiency in the sector is high, scale economies are highly relevant, and public institutions are in average more efficient than their private counterparts.
Quelques réflexions sur la typologie des obligations en droit international, avec référence particulière au droit des traités et au droit de la responsabilité
Authors: Wyler Éric
Published: November 2022

Deux types de difficultés font obstacle à l’élaboration de typologies cohérentes des obligations en droit des traités et de la responsabilité : comment élaborer des catégories et comment classer tel objet dans telle catégorie ? Si, pour une approche formaliste,

la catégorie, ontologique, reflète la réalité juridique et englobe les éléments classés mécaniquement par subsomption, pour une approche pragmatique, toute catégorie s’induit d’occurrences dans une dialectique réciproque de co-constitution, l’opération de catégorisation, complexe, engageant un choix effectué selon l’analogie. La typologie de certaines obligations internationales proposée ici selon quatre critères distincts met en évidence deux problèmes : 1) tout critère de classification choisi recèle une part d’indétermination intrinsèque ; 2) des recoupements intra ou inter-catégoriels sont inévitables. Ces écueils épistémologiques, occultés par le formalisme mais assumés par le pragmatisme proviennent de la richesse et complexité des réalités – juridiques ou autres – que nos concepts et catégories ne peuvent qu’appréhender approximativement.
L’affaire Jadhav entre l’Inde et le Pakistan devant la Cour internationale de Justice (arrêt du 17 juillet 2019) : une approche consulaire de l’espionnage entre États
Authors: Lafouasse Fabien
Published: November 2022

Saisie par l’Inde à la suite de la détention et de la condamnation à mort au Pakistan d’un ressortissant indien, M. Jadhav, supposé membre du service indien de renseignement et soupçonné de s’être livré à des activités d’espionnage en territoire pakistanais, la Cour internationale de Justice devait se prononcer sur la violation de l’article 36 de la convention de Vienne sur les relations consulaires possiblement occasionnée par l’État défendeur. L’État demandeur estimait en effet que son ressortissant

n’avait pas bénéficié des droits consulaires tirés dudit article 36. L’État défendeur, de son coté, s’appuyant sur la pratique des États dans de telles circonstances, mettait en avant une exception à cette disposition dans les cas d’espionnage, exception que la Cour a dûment rejetée, condamnant le Pakistan dans son arrêt du 17 juillet 2019 et lui demandant in fine d’organiser un nouveau procès au profit de M. Jadhav. Cependant, en s’en tenant strictement à l’examen de l’article 36, la Cour n’a pas étudié en profondeur les moyens avancés par la partie pakistanaise dans son approche consulaire de l’espionnage entre États, dont le moins qu’on puisse dire est que la pratique interétatique, en l’espèce, n’est pas uniforme.
CIJ, Application de la convention internationale pour la répression du financement du terrorisme et de la convention internationale sur l’élimination de toutes les formes de discrimination raciale (Ukraine c. Fédération de Russie), exceptions préliminaires, arrêt du 8 novembre 2019 : étape ou répétition avant le fond ?
Authors: Bourdoncle Emmanuel
Published: November 2022

Dans son arrêt relatif aux exceptions préliminaires, la Cour internationale de Justice écarte l’ensemble des demandes d’incompétence et d’irrecevabilité soulevées par la Russie dans le cadre du contentieux qui l’oppose à l’Ukraine permettant ainsi la poursuite de la procédure. Cette décision permet ainsi la poursuite de l’affaire et confirme la CIJ comme acteur incontournable du conflit en Crimée et dans l’est de l’Ukraine. En dépit de ce contexte particulier, la Cour a fait, conformément à sa jurisprudence, une application pragmatique des clauses compromissoires de la Convention internationale pour la répression du financement du terrorisme et de la Convention internationale sur

l’élimination de toutes les formes de discrimination raciale. L’arrêt tend alors à inscrire les exceptions préliminaires dans une continuité depuis la demande en indications de mesures conservations jusqu’au stade du fond. Celui-ci sera peut-être l’occasion pour la Cour de confirmer sa réticence, implicitement manifestée en l’espèce, à se saisir de la

protection des droits individuels.
La zone maritime disputée entre la France et Maurice autour du récif de Tromelin
Authors: Robin Denys-sacha
Published: November 2022

Le récif de Tromelin est un îlot de moins de 1 km2 situé au milieu de la zone Sud-Ouest de l’océan Indien, au Nord de la Réunion et à l’Est de Madagascar. Administré par la France depuis sa découverte à la fin du XVIIIe siècle, Maurice en demande la «restitution » depuis 1976. Les enjeux soulevés par ce différend sont surtout maritimes et liés à la possibilité d’exploiter une vaste zone économique exclusive de 280 000 km2. Dans ces conditions, la question du régime juridique applicable à une telle zone maritime disputée se pose. À cet égard, les dispositions de la Convention des Nations Unies sur le droit de la mer de 1982 sont relativement lacunaires, les articles 74, § 3 et 83, § 3 se limitant à prévoir une obligation générale de coopération et de retenue dans l’attente du règlement définitif des questions de délimitation. L’analyse de la position et de la pratique des deux États concernés est néanmoins riche d’enseignements. Elle permet notamment d’entrevoir comment la France et Maurice parviennent à concilier leurs prétentions relatives à la souveraineté sur l’îlot et l’instauration (éventuelle) de mécanismes provisoires de coopération à l’égard de la zone maritime environnante.
TCK'NIN 85. MADDESİNİN İKİNCİ FIKRASININ HUKUKİ NİTELİĞİ VE BAĞLANTILI SORUNLAR
Authors: GÖKTÜRK Neslihan
Published: November 2022

Taksirle öldürme suçunu düzenleyen TCK’nın 85. maddesinin birinci fıkrasına göre “Taksirle bir insanın ölümüne neden olan kişi, iki yıldan altı yıla kadar hapis cezası ile cezalandırılır.” Maddenin ikinci fıkrasında ise, taksirle işlenen aynı fiile bağlı olarak birden fazla kişinin ölümüne ya da en az bir kişinin ölümüyle birlikte bir veya birden fazla kişinin yaralanmasına sebebiyet verilmesi halinde, failin iki yıldan onbeş yıla kadar hapis cezasıyla cezalandırılması öngörülmektedir. Taksirle işlenen bir fiille bir kişinin ölümüyle birlikte bir veya birden fazla kişinin yaralanmasına sebebiyet verilmesi durumunda, bir muhakeme şartı olan şikayet bakımından sorun ortaya çıkmaktadır. Zira taksirle öldürme suçu re’sen soruşturulan ve kovuşturulan bir suç iken; taksirle yaralama suçunun soruşturulması ve kovuşturulması kural olarak şikayete bağlıdır. Taksirle yaralama suçunun şikayete tabi olan şekli bakımından suçtan zarar gören kişinin şikayetçi olmaması halinde, bunun TCK’nın 85. maddesinin ikinci fıkrası bakımından etkisinin ne olacağı sorunu ortaya çıkmaktadır. Örneğin meydana gelen bir trafik kazasında bir kişinin ölmesi ve iki kişinin yaralanması, fakat yaralanan kişilerin şikayetçi olmaması halinde TCK’nın 85. maddesinin birinci fıkrası mı, yoksa ikinci fıkrası mı uygulanacaktır? Bu husus, sadece şikayet değil, örneğin uzlaşma gibi diğer muhakeme şartları; ayrıca madde bakımından yetkili (görevli) mahkemenin tespiti bakımından da önem taşımaktadır. Maddenin uygulamasında ortaya çıkan söz konusu sorunlar, esasında düzenlemenin hukuki niteliğiyle ilişkilidir. Makalenin konusu, Yargıtay kararları ışığında ve doktrindeki tartışmalar çerçevesinde TCK’nın 85. maddesinin ikinci fıkrasının hukuki niteliğinin ortaya konması ve buna bağlı sorunların çözüme kavuşturulmasıdır.
APPLICATION OF LEGAL PROVISIONS AND REGULATIONS IN THE TREATMENT OF DRINKING WATER IN THE TERRITORY OF THE CITY OF VRANJE
Authors: Marković Jelena , Jovanovic Katarina
Published: November 2022

The quality of drinking water is very important and an essential factor for the normal functioning ofliving beings. Depending on the quality of water, the quality of many food products, which use water in theirprocessing and production process, also depends. The city of Vranje has chemically and bacteriologically correctdrinking water, because the water is regularly checked, controlled and analyzed, both in the water factory and in thePublic Health Institute of Vranje. However, the large number of factories and the loading of watercourses with anexcessive amount of waste greatly affect the change in water quality. For this reason, it is very important to treat thewater so that the water remains of satisfactory quality. There are many legal regulations that, through theirregulations, influence the maintenance of water quality at a satisfactory level. This paper focuses precisely on theapplication of legal regulations and regulations in the treatment of drinking water testing.
COMMITMENTS TO OVERCOME THE ENERGY CRISIS
Authors: Sarafska Emilija
Published: November 2022

Increase in the price of electricity in the past period, crisis with COVID-19, as well as the war in Ukraine,have led to uncertainty about what kind of winter we will have and how we will meet it in terms of electricitysupply. This situation imposes the need to search for appropriate solutions that will alleviate the situation, for which,in reality, no one has a real picture yet. The Republic of North Macedonia, as a candidate country for membership inthe European Union, follows the steps and legal regulations of the EU, implementing the regulations andrecommendations that should be applied in the direction of energy standards. Hence, changes were made in the legalregulations of the state, i.e. the new energy law was adopted, which is in line with the European regulations, EnergyDevelopment Strategy until 2040, and the National Climate and Energy Plan was adopted.The energy transition in Europe is an inevitable process, which is also happening in the Republic of NorthMacedonia. According to such commitments at the state level, local self-government units have their own significantrole in the transition process, applying the use of renewable energy sources. Hence, the need to include appropriatelytrained personnel in the municipalities is increasingly being imposed, in order to make their own contribution tobetter energy standards, and thus environmental protection.From the experiences so far, the Municipality of Bitola, within the framework of the legal regulations, is working onthe process of improving the energy efficiency of the buildings under its jurisdiction. This means that in addition tothe building of the municipal administration, the facilities of public enterprises, schools, kindergartens, the sportshall "Boro Churlevski" and the nursing home "Sue Ryder" are under the jurisdiction of the municipality.In all these facilities, it is necessary to determine the level of their energy categorization, that is, the facilities shouldreceive an appropriate classification in terms of energy efficiency with the letters A to G. If the building has acategory A, it will use up to 90% less energy than the one that is rated as the lowest. Class B will spend about 70%less than the rest and class C will spend 35% less. In order to improve this categorization, work is being done in themunicipal facilities to improve the heating systems, air conditioning systems, lighting, etc. In the Municipality ofBitola, in most of the municipal buildings, a large number of activities have been carried out to improve energyefficiency, and the lighting has been replaced with LED bulbs.Building insulation is an important part of saving electricity, so it is also a significant step in improving conditionsin buildings. Photovoltaic and their installation, as well as renewable energy sources, not only contribute to savingelectricity, but also reduce CO2 emissions.The following paper will give an overview of the last measures taken at the local level and the efforts to overcomethe energy crisis, which represents one of the biggest challenges of modern life.
TESTING TECHNOLOGIES OF HYDROAGGREGATE FOR THE PURPOSE OF ASSESSMENT OF VIBRATIONAL STATE IN EXPLOITATION
Authors: Janjić Zoran
Published: November 2022

Vibrations of the basic assemblies of the hydrogen generator cause variable forces and loads that occurduring operation and depending on the operating mode. This paper presents some test results performed on a Kaplanvertical type turbine. Measurements were performed at 3 measuring points (N1, N2 and N3; Figure 1) using noncontactsensors, placed in pairs under 90 at each measuring point. Based on the measurements performed and theanalysis of the obtained results, the following can be concluded: hydraulic tests of the turbine were performed oninstruments that ensure high accuracy of these measurements. The tables show the absolute vibrations on thebearings of the hydro unit, as well as the vibrations of the turbine guide bearing
STABILITY ANALYSIS OF THE TECHNOLOGICAL PROCESS OF MECHANICAL WOOD PROCESSING USING CONTROL CHARTS
Authors: Stanojević Damjan , Kocić Milos
Published: November 2022

This paper presents a quality control tool, that is, a quality control method, which in this case concernsthe mechanical processing of wood, but in general, it can be implemented in any form of production (mechanicalengineering, traffic, food technology...). The goal of the research is to show the way of applying the control chartmethod, that is, to determine the stability of the technological process of mechanical wood processing in order to beable to define appropriate corrective measures in order to improve that part of the production process. The controlchart that was created in this paper is a graph consisting of a horizontal (abscissa) and a vertical axis (ordinate). Theorder of observations is plotted on the abscissa, and the corresponding values on the ordinate. Apart from theprecise creation of control charts, their correct interpretation is also of great importance. It is easiest to interpretcontrol charts where the process is "outside statistical control", that is, the process where the values of individualmeasurements are outside the control limits. This means that some special cause of variation is present in the processand an adjustment needs to be made. However, placing all points within the control limits, that is, obtaining acontrol map on which the process is "within statistical control", does not necessarily mean that such a process isacceptable by statisticians. On the basis of the results, that is, on the basis of the graph that has the shape of a brokenline, we observe whether the control limits have been exceeded, and we draw certain conclusions about the stabilityof the process. If the graph is between the control limits, we can conclude that our process is stable and undercontrol, that is, that our quality variation is within normal limits. If there are any jumps, ie. if some value in someobservation is out of bounds (above the upper control limit or below the lower control limit), then we conclude thatour process is not stable, not under control and that our quality variation is not within normal limits. In that case,certain corrective measures were proposed, which should improve the technological process of mechanical woodprocessing and bring it under control.Control charts, as an engineering-mathematical tool, are a very suitable tool for achieving the goals of statisticalcontrol. Optimal application of control charts ensures constant monitoring of the process, direction towards thedesired flow and undertaking of possible corrective measures. Also, their application ensures the fulfillment of thedesigned or required quality characteristics, that is, the fulfillment of the requirements of a certain standard. Withtheir simplicity of application and reliability, they provide users with convenience in work and relevant processindicators, and provide process controllers with valid data about the process flow. As such, they represent a tool thatkeeps the entire process within the given limits.
TECHNO-ECONOMIC ANALYSIS OF THE INNOVATED TECHNOLOGY FOR THE PRODUCTION OF WAGONS BRAKE TRIANGLE
Authors: Ristić Miloš , Milutinović Biljana , Mihajlović Stefan
Published: November 2022

Increasing profits by reducing costs during product development and its production and quality increasingare challenges that companies face every day in their operations. The aspiration of modern production is to achievean effect similar to those in mass production (or at least in large series production) even on extremely small series ofproducts, even on personalized products. Techno-economic analysis in modern companies is an integral part of thecompany's modern information system. This paper presents a techno-economic analysis of innovative technologiesfor the production of a wagons triangle brake, a product that is an integral part of the brake system of freight andpassenger wagons of the older generation: casting and additive technologies. Given that there are currently availabledifferent production technologies that can be applied, one of the criteria for choosing a production technology is itsprofitability. The choice of solution, whether the product will be made by casting (or welding) or additivetechnology, is mostly influenced by the size of the series. In the case of the cast part, the so-called constant costs(model, molds for cores), but variable costs are therefore lower, i.e., costs proportional to the number ofmanufactured pieces. Additive technologies that can be used to make such parts can use numerous methods, three ofwhich stand out due to their application in practice. These are stereolithography (STL), extruded material (EBM)and direct metal laser sintering (DMLS). Machine cost is the main factor for stereolithography and melt extrusion,while material cost is the main factor for laser sintering. The price of additively manufactured parts is calculatedaccording to the cost model that follows activities, where each cost is linked to a specific activity. The analysisindicates that additive technologies are not such a cheap process, especially in serial production, but they areexcellent in individual production or during rapid prototyping, and the price of the product obtained by additivetechnology is the same for each piece. Also, cast parts have high initial costs (casting molds, etc.), but castings arerelatively cheap, which leads to a drop in the total price as the series increases. Both technologies have limitations interms of the materials that can be used in casting or additive manufacturing processes. Based on the technoeconomicanalysis, it can be concluded, also, that certain activities require the engagement of other companies thatshould be entrusted with certain business activities or tasks - in this way, the company's resources are saved andemployed on other more expedient activities that will bring greater benefits, and the system work is not disturbed ordisturbed. The advantage of casting technology over additive technologies is already profitable for series over 42pieces, and compared to forging, the casting of this part of the product is 2.5 times cheaper.
NEW TECHNICAL SOLUTIONS FOR INCREASING FORKLIFT STABILITY
Authors: Cvetanović Boban , Radosavljević Dušan
Published: November 2022

The forklift is one of the most frequently used work machines in internal transport. It has a whole rangeof advantages compared to similar machines used in cargo handling, first of all, great maneuverability and easyadaptability to changes in the technological process. When talking about disadvantages, there seems to be only one,and that is working at the limit of stability. The concept of stability in a forklift is defined as its ability to avoidtipping over. In most cases, accidents with forklifts are the result of poor handling by the operator, that is, it is asubjective factor. However, large manufacturers of forklifts, such as Kalmar, Toyota, Caterpillar, Linde and others.with new technological solutions on forklifts, they are trying to reduce the possibility of endangering the stabilityand overturning of the forklift. Although there are many such solutions, some of which are still in the realm oftheoretical research, in this work four solutions have been selected and analyzed, which have their own commercialapplication. It should be acknowledged that although there is no research to show the success of these solutions inthe field, through the reduced number of accidents, the stability of the forklift is undoubtedly increased. Although inthe paper, the analyzed solutions are not ranked in order of importance, the opinion of the author of this paper is thatToyota's active stability system is the pinnacle of a technical solution that ensures safe and secure operation. It is atechnology that ensures both static and dynamic stability, that is, it provides assistance both during driving and whenworking with loads at height. Another solution is the use of automatically guided forklifts in internal transport. It is adriverless forklift that autonomously follows a series of pre-determined programmed instructions to performactivities given by a central automatic controller. Moving along the programmed paths, there is no possibility thatthe stability of the forklift is compromised. Although the active stability system and driverless forklifts haveundoubted qualities, the number of such forklifts in Serbia is at the level of a statistical error, probably due to thehigh price compared to classic forklifts. The solution with increasing the dimensions of the forklift is good, butapplicable only for forklifts with a large capacity, which make up 1% of the total number of forklifts. In the end,although the use of special gripping devices is probably the weakest solution, in a technical sense, it is probably alsothe most acceptable because it is not excessively financially demanding.
Effect of silicic acid concentration on green mesoporous silica synthesis
Authors: SALAZAR-HERNÁNDEZ Mercedes , SALAZAR-HERNÁNDEZ Carmen , ELORZA-RODRÍGUEZ Enrique , MENDOZA-MIRANDA Juan Manuel
Published: November 2022

Tetraethoxysilane is the most commonly used precursor for obtaining mesoporous silica, it is economically expensive, so the use of inexpensive precursors such as sodium silicate or silicic acid are of interest for the economic production of said materials; silicic acid is generally obtained from sodium silicate by adjusting the pH of the system to 3-4 or through the use of ion exchange resins, this second methodology allows to eliminate the use of acid or basic catalysts in the synthesis of materials, which potentiates these materials for bioparticle encapsulation applications. The effect of the poly-condensation of silicic acid in obtaining mesoporous silica has been little evaluated, so this work shows the study of the effect of the degree of polycondensation of silicic acid on the textural properties of the materials, observing that at 0 and After 48 h of Si(OH)4 aging, the synthesized materials show a bimodal distribution of their pores at 4 and 8 nm, observing the majority presence of pores at 4 nm at 6, 24 and 72 h of aging.
SiO2-PDMS as oil removal system
Authors: GÓMEZ-LÓPEZ Rosa Viridiana , SALAZAR-HERNÁNDEZ Mercedes , MORENO-PALMERIN Joel , SALAZAR-HERNÁNDEZ Carmen
Published: November 2022

This work presents an oil removal system design based on the use of hydrophobic silica (SiO2/PDMS) obtained by the co-condensation of silica with polydimethylsiloxane (PDMS) using DBTL as a polycondensation catalyst. The amount of PDMS in the SiO2/PDMS structure varied from 10 to 40%w. The SiO2/PDMS was impregnated into a sponge system and the amount of hydrophobic silica trapped in the sponge was evaluated by gravimetry; in addition, infrared spectroscopy will allow the identification of the hydrophobic silica in the sponge and the main functional groups of the sponge. The hydrophobic character was determined by changing the water absorption capacity of the sponge and by measuring the contact angle. On the other hand, optical microscopy allowed the identification of changes in the sponge surface due to the presence of SiO2/PDMS. Finally, the effect of the amount of PDMS on the oil-in-water removal capacity was determined.
The Role of Islamic Religious Education Teachers and Parents in Discipline Students's Worship in Madrasah Tsanawiyah
Authors: Nasution Yusri Purnama Anju , Siahaan Amiruddin , Zulheddi Zulheddi
Published: November 2022

The purpose of this study is to determine the form of cooperation, application, and obstacles for PAI teachers and parents in disciplining student worship. This research uses qualitative research, with a phenomenological approach. The subjects of this study were 6 the Principal, Vice Principal, PAI Teacher in the Field of Akidah Akhlak Study and the field of Jurisprudence, and 2 guardians of class VII and VIII students. This study used primary data and secondary data as data sources. Meanwhile, data collection tools through interviews/interviews, observations, and documentation. The data analysis techniques used are data reduction, data presentation, and puff withdrawal. To promote the validity of the data, it is carried out by extending the period of observation, triangulation, careful observation, and holding members and checks so that the information obtained can be used in research following what the informant means. Based on the findings, the results were obtained that the form of cooperation carried out by teachers with parents was through the madrasa committee and also tools in the form of mutaba'ah books, liaison books, and social media group accounts. The way to implement cooperation between PAI teachers and parents is to provide a good example or example, then provide advice and control every student activity. The obstacles faced by teachers and parents of students are parents not attending meetings held by teachers at school, students often forgetting to bring mutaba'ah books, and parents often forgetting to fill in mutaba'ah books so that children often fill in their mutaba'ah books. Based on this, the solution that is carried out to facilitate cooperation between teachers and parents is using continuous communication and frequent meetings to support the success of an activity that has been systematically compiled and planned.
Collaboration-Based Learning in the Era of the 4.0 Industrial Revolution
Authors: Mujahid Imam
Published: November 2022

The purpose of this study is to describe collaboration-based learning in elementary schools. This type of research is qualitative research with a phenomenological approach. The speakers in this study were teachers and principals. Collecting data through observation, in-depth interviews, and documentation study. The validity of the data used was the triangulation of methods and sources. Data analysis in this study used data reduction, data presentation, and conclusion drawing. The results of the study show in 2 ways: 1). Collaborative learning where students do more learning through class discussions and completing assignments in groups. The implementation of this collaborative learning is carried out to create child-friendly schools that always involve students in real activities. teachers who teach learning in both high and low classes orientate their students to always communicate and interact in the teaching and learning process. 2). The implementation of the outing class is carried out programmatically by each class teacher to suit the theme being studied. This activity is carried out in places that have a value following the theme being studied for the achievement of student attitudes. This activity has been programmed in all classes with the scheduling system for each class.
The Effect of Think Pair Share and Intelligence Quotient on Economics Students’ Learning Outcome
Authors: Naskah Naskah , Ansharullah Ansharullah , Natasha Harum , Riofita Hendra
Published: November 2022

The purpose of this study was to examine the relationship between intellectual ability, the Cooperative type think pair share learning model, and the Entrepreneur lesson in grade ten at a vocational high school in Sungai Penuh. This study is a Quasi-experiment in nature. Purposeful sampling was used in this study. In total, 103 students made up the study's sample. We used two instruments to obtain this data: an experimental one and a validated one. The school has collected primary data in the form of student learning outcomes and secondary data in IQ test outcomes. On the other hand, a descriptive and inductive analysis was performed using a two-way analysis of variance. The study found that (1) the learning outcomes for students who were taught using the cooperative learning model type Think Pair Share were better than the outcomes for students who were taught using the traditional learning model. According to his research, the academic success of high-IQ students is not better than that of low-IQ students. Thirdly, there was no correlation between the cooperative learning approach (Think, Pair, Share) and student achievement.
The Effectiveness of Limited Face-to-Face Learning in Improving Student Learning Motivation during the Covid-19 Pandemic
Authors: Lumi Deflita Rusly Norsly , Manoppo Febri Kurnia , Massang Berdinata
Published: November 2022

The purpose of this study is to find out the motivations of learning students of the Faculty of Christian Education who follow limited face-to-face learning. This research uses quantitative research methods with a form of true experimental design, namely Posttest-Only Control Design. The population in the study was 329 students in semester 1 and semester 3 at the Faculty of Christian Education, which was divided into experimental classes and control classes. Calculation of sample numbers using Issac and Michael formulas, sample numbers in the experimental class of 128 students, and control classes of 103 students were randomly selected. The research instrument uses a questionnaire, consisting of 26 items developed based on Marx and Tombuch's theory of motivation to study. Data is shared with students online through the Google Form platform. The data that has been collected is statistically tested: the normality test, the homogeneity test, and the Mann-Whitney U-test test. The results showed that the Value of the Mann-Whitney U-test was 4849.500, and the signification value was 0.001, which is less than 0.05 (P 0.05). The results show that there are differences in the learning motivation of students who take part in limited face-to-face lectures, whereas students who take limited face-to-face lectures have higher motivation.
The Application of Discovery Learning Model to Improve the Character of Democracy and Learning Outcomes For Elementary Students
Authors: Elvirawati Imada Cahyani , Rezania Vanda
Published: November 2022

This study's overarching goal is to ascertain whether or not the discovery learning paradigm may improve democratic traits and academic performance. In this study, action research was conducted in the classroom over the course of two cycles. Rural primary schools in Sidoarjo were the focus of this study. Data on learning outcomes were collected using a questionnaire, and data on democratic character value was collected by a test of learning outcomes administered at the end of each cycle. This study made use of descriptive statistics for its analysis of data. Class IV students' learning outcomes and their appreciation for democratic principles both improve with the implementation of this discovery learning paradigm. The calculated mean shows the answer. Over and above the researcher-determined KKM of 75.0, students' democratic character is typically valued at 57.0 after the first cycle, 63.23 after the second, and 77.14 after the third. In addition, the researcher finds that the average value of student learning outcomes rises from 78.0 in the first cycle to 80.47 in the second cycle to 89.04 in the third cycle, all while remaining above the KKM, which is 85.0. The quality of democracy and educational outcomes for students can both benefit from the use of the discovery learning approach.
Self-efficacy of Teachers in Teaching English amid the Covid-19 Pandemic
Authors: Dewi Aulia Rahma Eka Kusuma , Kristina Diah , Ngadiso Ngadiso
Published: November 2022

This study aimed to analyze teachers’ self-efficacy in teaching English as a Foreign Language (EFL) amid the Covid-19 pandemic in Cilacap, Central Java province, Indonesia. The study used a qualitative case study design. This study had exposed the questionnaire from twelve teachers in three Senior High Schools and interviewed four teachers from each of these three schools as the represented respondents. The data were then analyzed using the interactive model of data analysis. Moreover, the responses for the self-efficacy scale revealed the result of the percentage used to conclude and the interview result usage to support the teachers’ perception of their self-efficacy in teaching English. The result proved that these teachers possess a high self-efficacy in teaching EFL. These teachers delivered positive responses and perceptions of their high self-efficacy, which encouraged them to have a great deal of determining instructional strategies, engaging the students, and managing the class during distance learning. Furthermore, specific findings within the domains of instructional strategies, student engagement, and classroom management provide further insight into the importance of examining the overall self-efficacy of EFL teachers in supporting distance learning.
Development of Media with Pictures for Kindergarteners’ Reading Readiness
Authors: Kurnia Rita , Hukmi Hukmi , Satria Defni
Published: November 2022

This is a developmental study that began with observations of some early childhood children in Siak Sri Indrapura, Indonesia, who lacked reading readiness. Seeing the potential of Malay folklore, a learning media for Malay folklore pictorial stories was developed. The process of creating media begins with the determination of the story and theme, followed by the creation of designs and product models. Validator assessment is feasible and may be used to determine a child's readiness for reading. To determine the effectiveness of the media, this study used a quantitative method with a two-group post-test design. According to the t-test results, a t-observed value of -8,175 with a significance value of 0.000 indicated that there was a difference in reading readiness between the experimental and control groups, indicating that the Malay folklore pictorial story media was effective for early childhood reading readiness in Siak Sri Indrapura.
Student’s Cognitive Conflict in Geometry Learning
Authors: Firmanti Pipit
Published: November 2022

This study aims to describe the cognitive conflicts of students in solving the equation of a circle. The research method used is descriptive qualitative. This study involved students who experienced cognitive conflict as a sample. The instruments used are tests and interviews. The results showed that there were eight forms of cognitive conflict that emerged when students completed the given questions. There is a tendency where students can determine the center and radius of a circle correctly but have difficulty drawing a circle from the given equation.
TRAJETÓRIAS DE LONGO VÍNCULO DE TRABALHO NO SISTEMA ÚNICO DE SAÚDE
Authors: Warmling Cristine Maria , Gasperin Carolina
Published: November 2022

O objetivo do estudo foi analisar as trajetórias de trabalhadores da saúde com longo vínculo de trabalho a um hospital público. Trata-se de um estudo de caso do tipo único holístico, com abordagem qualitativa.  Foram realizadas entrevistas abertas (gravadas em áudio e transcritas) com doze trabalhadores que atuavam entre 31 a 35 anos na instituição do Sistema Único de Saúde analisada. Os vínculos ao trabalho construídos nas trajetórias dos trabalhadores assumem diferentes sentidos: de contratuais, aos serviços e equipes, passando pelos vínculos aos modelos de saúde preconizados. Nas análises discursivas, o aproveitamento das competências para o trabalho dos trabalhadores de longo vínculo ocorre pelo reconhecimento de seus conhecimentos tácitos. O longo tempo de vínculo ao trabalho produz um agir na saúde coletiva nutrido pelas relações estabelecidas entre trabalho, vida pessoal e vida coletiva no trabalho. Práticas de gestão da idade com o eixo na Educação Permanente em Saúde valorizam as subjetividades dos trabalhadores e construções coletivas nas histórias no trabalho no Sistema Único de Saúde.
PROJETO PROFISSIONAL DO JOVEM DA ESCOLA FAMÍLIA AGRÍCOLA
Authors: Alves Ricardo Pereira , Piatti Celia
Published: November 2022

Este artigo tem por objetivo investigar as contribuições do projeto profissional do jovem egresso da Escola Família Agrícola Rosalvo da Rocha Rodrigues com foco na formação profissional, geração de trabalho e renda. Os dados são oriundos da pesquisa de Mestrado em andamento intitulada “Processos formativos via alternância: egressos da escola família Agrícola Rosalvo da Rocha Rodrigues – EFAR”. O estudo está fundamentado no materialismo histórico-dialético. A análise de dados ocorreu por meio de entrevista semiestruturada com seis egressos da escola em pauta, concluintes no período de 1999 a 2009. Como resultados, verificou-se que a formação via pedagogia da alternância possibilita ao jovem a formação profissional na perspectiva emancipatória de formação para a vida, possibilitando, em alguns casos, a permanência do jovem no campo e sua atuação profissional como agente de desenvolvimento local de sua comunidade. Há de se ressaltar a dificuldade no acesso a investimentos para custeio, dificultando a concretização do projeto. No entanto, o projeto profissional do jovem possibilita ao egresso da Escola Família Agrícola a possibilidade de geração de trabalho e renda e, por conseguinte, a melhoria das comunidades localizadas no campo.
ESTRATÉGIAS DE ENFRENTAMENTO UTILIZADAS POR TRABALHADORES DA INDÚSTRIA TÊXTIL FRENTE AO TRABALHO REPETITIVO
Authors: Dale Alana Pires
Published: November 2022

A indústria têxtil é, sem dúvida, uma importante atividade econômica, dentre as existentes no mercado brasileiro, grande geradora de empregos e faturamento. Entretanto, as tarefas exigidas neste ambiente podem afetar negativamente a saúde de seus trabalhadores, como, por exemplo, a realização de movimentos repetitivos por longo períodos, característicos de trabalhos industriais que utilizam de máquinas em seu processo produtivo. Para tentar “driblar” os empecilhos encontrados na realização das atividades, muitos trabalhadores se veem obrigados a utilizar alternativas para fugir, amenizar e/ou enfrentar tais riscos. É a partir do conhecimento dessas situações que temos como objetivo identificar as estratégias de enfrentamento utilizadas por trabalhadores de uma indústria têxtil, frente a realização de trabalho repetitivo. A pesquisa foi realizada com trabalhadores de uma indústria têxtil, do interior do Brasil, que realizam movimentos repetitivos em sua jornada laboral diária. O estudo de caso associou recursos metodológicos da Análise Ergonômica do Trabalho (AET) aos pressupostos e conceitos da Abordagem Ergológica do Trabalho. Em uma primeira fase exploratória houve aproximação do problema de pesquisa levantando informações sobre a empresa e seus trabalhadores. Em um segundo momento a investigação aprofundou a questão com entrevistas individuais semiestruturadas com nove trabalhadores, observando-os durante a realização de suas atividades. Nas situações de trabalho selecionadas para estudo, constatamos riscos do trabalho, como a realização de movimentos repetitivos, tais como postura forçada e inadequada, levantamento e transporte de peso, ruído intenso, longos períodos em pé, excesso de poeira de algodão no ar e riscos de acidentes com máquinas. Enfocando especificamente a realização dos movimentos repetitivos, encontramos como estratégias de enfrentamento, a redução do ritmo e intensidade de trabalho, a construção de saberes a respeito das máquinas e materiais, a ingestão de medicamentos para dor, a busca por evitar erros que posteriormente devem ser reparados em atividades ainda mais desgastantes, os alongamentos antes e durante o trabalho, os saberes em relação ao modo de transportar as caixas, a ação de fazer dobra de lata, entre outros. Assim, pudemos validar alguns pressupostos da Abordagem Ergológica do Trabalho, que considera que os sujeitos não são meros executores de tarefas, mas sim, possuidores de saberes, vontades, valores, inteligências e histórias, e isso configura as maneiras como eles realizam as atividades, através de construções coletivas ou individuais de métodos de se protegerem no trabalho. Trazendo para destaque três pontos chave: a relação entre as estratégias, renormalizações e saúde; os riscos multicausais de adoecimentos (físicos, organizacionais) e; a não absoluta positividade das consequências da utilização de estratégias de enfrentamento, que tem como objetivo assegurar a saúde.
Determinan Nilai Perusahaan di Indonesia
Authors: Anggraini Gina Rahayu , Indriani Eni , Hudaya Robith
Published: November 2022

This study aims to examine the effect of investment decisions, funding decisions, dividend policy and profitability on firm value. The test was carried out on 31 samples of manufacturing companies listed on the Indonesia Stock Exchange (IDX) with an observation period of 5 years, from 2016 to 2020. Using panel data regression analysis, the results showed that simultaneously investment decisions, funding decisions, dividend policies and profitability positive effect on firm value and partially investment decisions and dividend policy have no positive effect on firm value, while funding and profitability decisions have a positive effect on firm value
Depth profiling of E
C – 0.26 eV electron traps introduced in homoepitaxial n-type GaN by ultra-low-dose Si-ion implantation and subsequent annealing
Authors: Iguchi Hiroko , Horita Masahiro , Suda Jun
Published: November 2022

Si ions were implanted into homoepitaxial n-type GaN at a peak concentration of 3 × 1014 cm−3 with subsequent annealing, and the associated formation of electron traps was investigated in detail using deep-level transient spectroscopy. A major electron trap was identified as 0.26 eV below the conduction band minimum and this trap concentration increased with increasing post-implantation annealing temperature, to a value of 6–8 × 1015 cm−3. Significant increases in the net donor concentration (N
D) were also observed within the implanted region. The profile of the electron trap concentration was correlated with these increases in N
D, suggesting that these traps acted as donors.
Unusual Intrabronchial Foreign Body
Authors: Jabri H. , Boumehdi A. , Cherkaoui R. , Arfaoui H. , Elkhattabi W. , Afif H.
Published: November 2022

Intra-thoracic textiloma is an exceptional complication leading to misdiagnosis. It could present as hemoptysis, pulmonary abscess, pseudotumor or chronic cough. We report a rare case of a superinfected intra-bronchial textiloma, revealed by flexible bronchoscopy. A 21-year-old patient, operated for esophageal atresia at the age of 10 days, who had a right bilobectomy for bronchial dilatation at the age of 9 years, and who presented several episodes of bronchial superinfections over the 12 past years. In the light of this observation, we show that flexible bronchoscopy should be part of the systematic work-up to be considered in front of dragging abscessed pneumopathies.
The Magnitude of Postoperative Nausea and Vomiting: A Descriptive Study in Rajshahi Medical College Hospital, Bangladesh
Authors: R Kundu, S. , H Islam, , K Kundu, S. , M Rahman, M. , K Khatun, M.
Published: November 2022

Introduction: Postoperative Nausea and Vomiting remains a challenge, despite having clinical perception and evidence that its severity has diminished. Aim of the study: This study intends to identify the magnitude of postoperative nausea and vomiting in patients aged 3–79 years. Methods: A descriptive study was carried out in the postoperative ward of Rajshahi Medical College Hospital, Bangladesh from October 2020 to September 2020. A total of 150 patients were enrolled in this study following the inclusive criteria. Results: Nausea, vomiting and the need for anti-emetic medication were recorded for 24 h postoperatively. In the early post \operative period, nausea and vomiting were 27.25% and 13.25%, respectively. Over the whole 2 day period, nausea and vomiting were 65.75% and 35%. 52% of the patients who received general anaesthesia and 38% of the patients who received regional anaesthesia reported nausea. Conclusion: Female gender, a previous history of postoperative sickness, a longer duration of surgery and a history of motion sickness are the most important predictive factors associated with an increased risk for nausea and vomiting. Even though nausea and vomiting problem is neglected in developing worlds like Bangladesh but it’s indeed a big problem for the patients and can affect the outcome of the treatment & the patients' wellbeing as well.