bluuebunny/crossref_metadata_2025 huggingface dataset:
High Speed Driveline Power Loss and Influencing Factors
Authors: Jain Sankalp , Singh Parminder
Published: January 2024

Energy savings in automotive applications has always remain an important aspect of research. In addition, today’s highspeed requirements in electric vehicles require high-efficiency drivelines to match overall vehicle mileage or range.

This paper presents the validation of the overall efficiency & drag losses of the highspeed Driveline for an ATV with 4-Wheel Drive System.

The efficiency & drag losses were measured in the powertrain testbed where the test units were placed between two Transient Dynamometers. The main aim of the test was to validate the overall efficiency as a function of input speed and torque. All these measured values of the gearbox efficiency are included in various graphs.

The tests were performed for complete functional range of test unit at max operating oil temperatures for Transmission and Front Differential testing. Drive shafts tests were performed at its complete range and various inclination angle up to max failure point.

The wheel hub was tested at various radial loading on bearings in different surrounding temperature maintained by a closed chamber.

This paper will give us the actual losses (%) which can be referred during the initial designing phase, advanced simulations, and other electric vehicle design to minimize losses and optimize the performance of drivelines.
Experimental Study of Piston Temperature Profile with Respect to Varying Engine Parameters – Using Telemetry Method
Authors: Pandey Ram Krishan , Kumar Atul , Jangra Sumit
Published: January 2024

As emissions standards become more stringent, OEMs are pushing engines to run on leaner fuel mixtures, which puts increased thermal stress on components, particularly pistons, causing them to operate at higher temperatures. This requires more robust design and rigorous testing of components. Telemetry methods offer accurate and real-time feedback, allowing designers to test components at various operating conditions, providing more flexibility than other traditional methods.

Piston temperature measurement is a critical aspect of engine development because it directly affects engine performance and durability. Among the various techniques available for this purpose, telemetry methods have gained considerable attention in recent years. This method involves integrating temperature sensors and transmitter on the piston, which transmit temperature data wirelessly to a receiver outside the engine.

In this paper, we evaluate the impact of coolant temperatures, valve timing, ignition timing etc. on piston temperature profile under various operating conditions, leveraging the flexibility of a telemetry system. Experiment was conducted on an In-Line 4-cylinder Natural aspirated Dual overhead camshaft (DOHC) bi-fuel engine equipped with a piston with six integrated temperature sensors along with transmitter for real-time temperature measurements. The test was performed on a Dynamometer bench and a Coolant Condition Unit (CCU) was used to vary the coolant temperature, while ignition timing, valve timing & Air-charge ratio was changed using INCA software (provided by ETAS Gmbh). The results demonstrate Linear correlation between Oil pressure and Piston temperature. While advance in ignition timing results in lower piston temperatures and vice-versa. Other parameters impact on piston temperature profile have also been discussed in this paper.
Optimization of Oil Quantity in Manual Transmission and Reducing Churning Loss
Authors: Lakshamanan Sundar , Ks Dhianeshwar , G R Santosh , Ramaswamy Sarathkumar
Published: January 2024

The gearbox is a crucial aggregate in a diesel truck. Gearboxes must work efficiently to get the job done properly and lubrication is vital to this efficiency. Lubricating oil is like the circulation system of a gearbox. If the oil levels fall too low, the gearbox will likely fail. Gearbox failure can lead to expensive repairs that could be prevented. Besides added costs due to replacement or repair, costs associated with a loss of production could be significant. These issues are why; it is important to understand the consequences of having low lubricant levels.

Similarly, higher oil level creates higher churning losses, heating of the Gear oil and oxidation, reduction in efficiency and increased oil leaks.

Understanding the functions of gearbox lubricating oil can help you choose the right quantity of prevent gearbox failures.

The aim of the testing is to find the accurate level of oil required to lubricate the Gearbox properly without failure and to reduce from the current predicted level of 10 ltrs which is deemed high.

The churning loss due to higher oil quantity will also be reduced in course of the trial and finally contributing to increased efficiency of Gearbox.
Effect of Torsional Vibration on Transmission and Validation Process
Authors: Patel Hiral , Tongaonkar Yogesh Manohar , Soor Debasis , Kansagara Smit
Published: January 2024

Transmission of a vehicle, being driven by an internal combustion engine is susceptible to torsional vibrations which are inherent property of an internal combustion engine. Torsional are produced in the engine because of multiple power strokes happening in multiple cylinders of the engine at regular intervals. These torsional vibrations affect each and every rotating component in the powertrain. A lot of work has been done in past in the area of ECU calibration, flywheel inertia, clutch dampener springs etc. to reduce the vibrations. These methods have limitations for the extent of damping that can be introduced into the system. Un-damped torsional vibrations when transferred further it affect rotating / oscillating components of transmission. Inside the transmission, it leads to rattle issues and affect the life of synchronizers or engaging gears. This paper describes the methodology to address the effect of high torsional vibration on synchronizer of commercial vehicle. This paper also gives details of the procedure to derive the torsional vibration duty cycle to validate the transmission. This paper deals with tests carried out on different combinations of synchronizer and engaging gear designs against varying torsional vibration levels to arrive at optimum design for the given torsional vibrations. Based on the sensitivity study and the validation results this paper also provides the design guideline for optimize design of transmission components against torsional vibration.
Detailed Tire-Wheel Modelling for Crash Related Development in LS-Dyna
Authors: Sirohi Yograj
Published: January 2024

Vehicle performances in Crash related events like Small offset rigid barrier tests are crucially dependent on Tire-Wheel modelling. The objective of this study is to develop a detailed tire-wheel model subjected to loading, performance and failure criteria. The modelling technique should be robust, replicable and stable across a wide spectrum of simulations cutting down on unnecessary delays.

This project evaluates the options offered in LS-dyna (damping, loads, sensors, materials etc.) and current states of models being widely used. There is a focus on offering additional tools in the model for analyst to control the failure and model behavior. This tire-wheel model is subjected to scrutiny at multiple levels namely standalone, sub-system and full vehicle. The results achieved on this new modelling technique shows confidence in this. This model checks all the right boxes in terms of robustness, efficiency and development. The correlation is better on subsystem level tests. Tire-wheel modelling is critical to crash and also difficult due to unavailability of important information at times. With this model, analyst gets an easy option to play around model. It is easier to debug and locate the issues.
Explorando el mundo del cálculo. Teoría y aplicaciones
Authors: Acosta Jaramillo Carlos Andrés , Márquez Coca Wilson Alexis , Flores Ruíz Alba Elizabeth , Chimarro Amaguaña Juan David , Lanchango Quimbiulco Patricia Emperatriz
Published: January 2024

"Explorando el mundo del cálculo. Teoría y aplicaciones" es un libro que busca dar a los lectores una sólida comprensión de los conceptos y técnicas del cálculo. Comienza con límites y continuidad, las derivadas y su aplicación en problemas relacionados con el movimiento, la optimización y la aproximación de funciones. También se aborda la resolución de problemas del mundo real y se estudian integrales, que son esenciales para la determinación de áreas y volúmenes. El libro concluye con aplicaciones avanzadas de integrales. En resumen, es una guía integral para comprender y resolver problemas en diversos campos de estudio.
Habilidades técnicas del lenguaje para resolver problemas
Authors: Alvaro Conchambay Juan Francisco , Maldonado Marin Diego Orlando , Dueñas Mosquera Jenny Carlota , Rojas León Elizabeth del Rocío
Published: January 2024

Este libro está diseñado para ayudar a los educadores en la enseñanza de alumnos jóvenes y adultos, dotándoles de las destrezas lingüísticas necesarias para alcanzar un nivel B1 de suficiencia en lengua inglesa. Este libro pretende proporcionar a los educadores un enfoque constructivista, adaptable y centrado en el alumno para la enseñanza de la lengua inglesa. Además, dotará a los profesores de las herramientas y técnicas necesarias para crear lecciones atractivas y eficaces que promuevan la adquisición del idioma. La guía se centra en el desarrollo de las cuatro macrodestrezas lingüísticas: comprensión oral, expresión oral, lectura y escritura. Las actividades y ejercicios están diseñados para reforzar gradualmente cada destreza de acuerdo con las normas del Marco Común Europeo de Referencia para las Lenguas (MCER). El aprendizaje contextual y los ejercicios facilitarán la comprensión y aplicación de estos elementos en situaciones de la vida real, incluyendo aprendizaje interactivo, actividades en grupo, debates y ejercicios de simulación para mejorar las habilidades comunicativas y aumentar la confianza en el uso del inglés.
Practical Psychology for Policing
Authors: Roach Jason
Published: January 2024

This textbook investigates how psychological research can be applied to practical policing. It explores new ways psychological knowledge can be used in broad areas of policing and uniquely demonstrates its use in specific aspects of practical policing. Encouraging critical reflection, this book is essential reading for practitioners and students.
Dealing, Music and Youth Violence
Authors: Alexander James
Published: January 2024

With fascinating ethnographic and interview data, James Alexander explores the disappearance of localised relationships and the rise in youth violence in a South London housing estate. Evaluating the effectiveness of youth work programmes, he considers the impact of the gradual move from neighbourly to professional support for young people.
Island Criminology
Authors: Scott John , Staines Zoe
Published: January 2024

Ten per cent of the world's population lives on islands, but until now the place and space characteristics of islands in criminological theory have not been deeply considered. This book addresses issues of how, and by whom, crime is defined in island settings, informed by the distinctive social structures of their communities.
A Hierarchical Vision of Order
Authors: Roth Antoine
Published: January 2024

China's vision for international order is a matter of great global interest. This book analyses China's vision for foreign policy and how it is seeking to achieve its goals with its immediate neighbours.
Contesting County Lines
Authors: Densley James , McLean Robert , Brick Carlton
Published: January 2024

Combining a compulsive read with rigorous academic analysis, this book tells the real-life stories of drug dealers involved in county lines networks. This myth-busting, accessible book offers a new way of thinking about drug crime prevention, intervention and enforcement.
FACTORS RELATED TO WORK FRUSTRATION ON THE HEALTH OF EMPLOYEES IN CENTRAL LOMBOK IN 2023
Authors: Jannah Raodatul , Hernawan Adam
Published: January 2024

The rapid development of science and technology and education also brings changes in human life. These changes have the effect of higher demands on each individual to further improve their performance. In order for their existence to be maintained, each individual will experience stress and frustration, especially for individuals who are less able to adjust to these developments. If you pay attention to people in everyday life, you will see various things that happen among the community. Some always seem to be happy, happy, happy and laughing even though what they will face later is different as expected. There are also those who often complain and grieve, despair, give up, do not fit in with other people and their work. This makes a person experience a health problem. This happens because of the lack of community for something to maintain harmony in society. It is these disturbing symptoms that prompt psychiatrists to try to investigate what causes different people's behaviors, despite the same conditions. This effort fostered one of the youngest branches of psychology, health. And in studying health, there are stress disorders and frustration among the community, due to a person cannot control himself to be better.
THE RARE EARTH ELEMENTS: AN IN-DEPTH EXPLORATION OF INDUSTRIAL UTILIZATION, RECYCLING POTENTIAL AND ENVIRONMENTAL RAMIFICATIONS
Authors:   Prince Abubakar AuduUniversity, Anyigba, Kogi State, Nigeria., Owolabi Joseph , Kizito Emeje ,   Prince Abubakar AuduUniversity, Anyigba, Kogi State, Nigeria.
Published: January 2024

This comprehensive study delves into the extensive spectrum of applications attributed to rare earth elements (REEs), their potential for effective recycling, and the intricate environmental considerations entwined with their extraction and utilization. The realm of rare earth elements is undergoing rapid transformations fueled by technological progress and the escalating demand for these essential components. The spectrum of REEs encompasses the lanthanide series elements, namely La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, as well as Sc and Y. These metals currently hold utmost significance across a multitude of contemporary technologies, spanning from smartphones, televisions, LED light bulbs, to wind turbines. This paper concisely outlines the environmental perils encompassing human health that stem from REE mining practices and the large-scale disposal of electronic waste containing noteworthy concentrations of REEs. Within these pages, we encapsulate novel strategies aimed at ensuring the future availability of REEs, including recent advancements in REE extraction from Coal Field Ash and innovative e-waste recycling methodologies. Additionally, we spotlight recent breakthroughs in the domain of individual REE separation techniques, encompassing both metallurgical and recycling operations.
A Comprehensive Review on the Development of Transdermal Patches for Sustained Release of Medication in Migraine Therapy
Authors: Zair Mahdi Abd , Hanthal Zainab Rahi
Published: January 2024

This extensive review study focuses on the developments and difficulties in the creation of transdermal patches for the treatment of migraines. Migraine is a common neurological condition marked by crippling headaches and frequently need early and effective treatment. A potential method for sustaining medication administration, transdermal patches provide regular dose and boost patient compliance. The composition of transdermal patches, the method of drug release, benefits, drawbacks, and potential applications in the treatment of migraines are all covered in this article.
Perbandingan Teknik Klasifikasi Catatan Medis untuk Indeks Antropometri Status Gizi Balita
Authors: Septyanto Arif Wicaksono , Hariyanto Henokh Lugo
Published: January 2024

Menilai status gizi balita sangat penting untuk mengawasi perkembangan gizi balita. Penelitian ini mencoba membandingkan dua cara untuk mengklasifikasikan status gizi balita, yaitu dengan menggunakan metode K-Nearest Neighbors (K-NN) dan Support Vector Machine (SVM) berdasarkan Indeks Antropometri. Penelitian ini dilakukan untuk mengetahui teknik mana yang paling baik untuk mengelompokkan balita dalam dataset gizi balita. Data yang digunakan untuk proses ini mencakup informasi seperti jenis kelamin, usia, berat badan, tinggi badan, dan indeks massa tubuh. Kami juga menghitung status gizi balita berdasarkan indeks antropometri, berat badan untuk usia (WFA), tinggi badan untuk usia (HFA), berat badan untuk tinggi badan (WFH), dan indeks massa tubuh untuk usia (BMIFA). Dalam mengukur seberapa baik teknik ini bekerja, kami menggunakan 827 data balita sebagai data latihan dan 207 data balita sebagai data uji. Hasilnya menunjukkan bahwa model K-Nearest Neighbors (K-NN) memiliki akurasi sekitar 93,01%, sementara model SVM memiliki akurasi sekitar 91,8%. Ini berarti model K-NN sedikit lebih baik daripada model SVM dalam mengklasifikasikan status gizi balita berdasarkan indeks antropometri.
Analisa Tingkat Perbedaan Harga Pada Pelaksanaan Program Percepatan Peningkatan Tata Guna Air Irigasi (P3-Tgai) Berdasarkan Usulan Biaya (SK Gubernur Provinsi Jambi) Dan Harga Survei Toko (Studi Kasus: Proyek Saluran Irigasi P3A Maju Jaya Desa Sembubuk
Authors: DF Dian Wahyoni , Vitri Gusni , Zayu Wiwin Putri
Published: January 2024

P3-TGAI is a cash-intensive program from the Ministry of Public Works and Public Housing with APBN funds to support one of the development priority agendas contained in the 2020-2025 RPJM, namely strengthening infrastructure aimed at supporting economic activity and encouraging equitable national development. This research was conducted in the construction of P3A Maju Jaya irrigation canal, Sembubuk Village, Muaro Jambi Regency in the recipient of the Acceleration of Irrigation Water Use Improvement Program (P3-TGAI). The purpose of this study was to determine the difference in costs applied in the field with the standard regulations of the Governor of Jambi Province, the type of research used is mixed method. The data analysis technique method used for data processing is the usual Excel calculation method. The results showed that the irrigation channel of P3A Maju Jaya, Sembubuk Village, Muaro Jambi Regency if done using the shop survey price, the volume length of the channel is greater than using the price of the Jambi Provincial Governor's regulation, where for the channel work with a fund of Rp. 195,000,000 if done using the shop survey price, the volume length of the channel can be obtained up to 290 m.
Maritime skills development in KwaZulu-Natal: 2022
Authors: Grimett Leticia A , Mzileni Sihle
Published: January 2024

The Operation Phakisa: Oceans Economy mandate, in line with the United Nations (UN) Sustainable Development Goals, calls for the extension of the benefits of maritime sector development to disadvantaged rural communities. This mandate can only be realised if the rural communities can actively partake in the sector. Research has shown that the coastal rural communities were unaware of the maritime sector, and few were prepared to partake in the maritime value chain. This maritime skills audit sought to determine the skills required by the maritime sector and the ability of the rural community to provide them. The research also sought to determine the geographical and educational gaps within the sector. Initially, the intention of the research was, to discover specific areas where skills shortages and education gaps were found. While the Protection of Personal Information (POPI) Act proved to be a limiting factor, the study still uncovered the structural issues affecting the education and training of rural learners. The maritime sector is primarily urban. Maritime training is also done within the urban sectors. While it should be a simple matter of the rural learners moving to urban centres to study, the deficiencies in the education of the rural populations have created a major systemic bottleneck. This paper provides the results of the maritime business audit, together with the issues facing the rural education sector and the obstacles they present.
Gastric Necrosis, A Rare Disease with a Complex Diagnostic Approach
Authors:   Department of General Surgery, General Hospital ISSSTE Aguascalientes, Mexico, Athenea Nieves Arellano
Published: January 2024

Gastric necrosis represents a rare condition and available literature is mostly in the form of case-reports being clinically under-recognized and therefore not diagnosed at an early stage. It is also a disease for which a definitive treatment has not yet been established since it can vary significantly from a conservative medical management to and aggressive surgical management, depending on the patient´s general conditions and medical history.
Cultivating Accountability: Transforming Small Businesses in USA through Structured Attendance Management
Authors:   Senior Solution Architect, Amazon, United States, Manikam Karthikeyan
Published: January 2024

This paper examines the various impacts of a lack of accountability on small businesses. It specifically focuses on decreased productivity, poor work quality, low employee morale and engagement, increased turnover, communication challenges, and resource wastage. Furthermore, it explores the implementation of an attendance point system as a quantitative measure to improve punctuality and regular attendance. It addresses anomalies such as late arrivals, early departures, long breaks, absences, and no-call no-shows. The study emphasizes the importance of establishing a culture of accountability and implementing structured attendance management to foster a positive work environment and enhance operational efficiency
Hybrid Peripheral Neurostimulation to Treat Chronic Post-Meningitis Headache- A Case Report
Authors:   Department of Anesthesiology, Allegheny Heath Network, Pittsburgh, PA, Ampomah Kwasi K
Published: January 2024

Introduction: Chronic post-meningitis headaches present clinically with persistent symptoms often mirroring migraines or tension-type headaches. These frequently include photophobia, phonophobia, and associated nausea and vomiting, similar to other primary headache disorders. Central to the pathology of viral meningitis is the inflammation of the meninges—the intricate protective sheaths encasing the brain and spinal cord. Case: This case study details a 56-year-old female patient experiencing chronic daily headaches and facial pain following an episode of self-resolving viral meningitis. Traditional therapeutic interventions failed to achieve satisfactory symptom control for the patient. In response to the treatment-resistant nature of the patient’s condition, a neurostimulator strategy was implemented providing over 95% symptom relief reported at week 12 post-implantation. This strategy employed a hybrid approach combining high cervical and occipital lead placements, with the goal of enhancing neurostimulator coverage and mitigating the patient’s persistent symptoms. Conclusion: Preliminary observations suggest a potential avenue for further research and exploration in the domain of refractory headaches. Hybrid peripheral neurostimulation, as an emerging paradigm in neuromodulation, draws from the principles of neural plasticity and targeted neuromodulation. This case serves as an exemplar for refractory post-meningitis headaches, offering an innovative solution when traditional therapies have failed to provide relief
ABOUT THE DEVELOPMENT TRENDS OF PERSONAL SUBSIDIARY PLOTS IN THE RUSSIAN FEDERATION
Authors:   Chelyabinsk State University, Zhigar Oksana V. , Serikova Olga O. ,   LTD "AlyansAvto"
Published: January 2024

The article reflects the essence and legislative foundations of employment in personal subsidiary plots in the Russian Federation. Statistical data on the dynamics of the number and average area of personal subsidiary plots, their distribution on the territory of Russia are given. The directions of state support of personal subsidiary plots are considered. The problem of pension provision for citizens employed in personal subsidiary plots is revealed. The foreign experience of organizing the activities of family farms is considered. Recommendations are proposed to support those employed in personal subsidiary plots in our country.
IMPROVING THE LOGISTICAL SYSTEM USING THE EXAMPLE OF THE TRADING ENTERPRISE LLC «KOVENTPRO»
Authors:   Chelyabinsk State University, Ivanov Sergey I.
Published: January 2024

The modern research is based on logistic activity of the company. We define the main modern requirements and foundation principals of logistics of the company. We analyze the key business processes of logistics and make economical analysis of modernization and development of logistics with the company Koventpro LLC as an example.
Destructive Workplace Deviance in the Farming Sector, South Africa
Authors: Maluka Harriet Rivalani , Setati Tlou Samuel , Mabasa Fumani Donald
Published: January 2024

In today's world of work, understanding destructive deviant workplace behaviours becomes more significant for organisations as they attempt to recover from the negative impact of the COVID-19 pandemic. Destructive deviant behaviour in organisations has received more focus in recent years due to its negative repercussions, which inhibit growth. However, it has rarely been studied in the farming sector, even though the sector is considered to be the main contributor towards bringing economic stability, especially in Africa. This paper explores the forms of farmworkers’ destructive deviant behaviours that threaten the well-being of the farms in order for management to be in a better position to effectively manage them. A narrative approach to inquiry was adopted in order to understand the farmworkers’ views and experiences in relation to their engagement in various forms of destructive deviant behaviours at their workplace. Semi-structured interviews were used to collect data from 39 farmworkers. Thematic analysis was used to analyse data and twelve themes were created in relations to the forms of destructive deviant actions that farmworkers engaged in. These themes include; putting little effort, incomplete work, sleeping on duty, extending break, using wrong working methods, ignorance of safety procedures, being under influence of alcohol, late coming, verbal fights, physical fights, theft and abscondment. The themes were further grouped into two categories, namely, interpersonal deviance and organisational deviance. An insight in relation to the various forms of destructive workplace deviance can enable management to develop appropriate managerial strategies that would minimise workers’ tendencies to engage in destructive deviant behaviours and jeopardise the well-being of organisations.
METAVERSO E EDUCAÇÃO: UM NOVO PARADIGMA DE APRENDIZAGEM?
Authors: De Oliveira Lemes David , Carlos Buesso Junior José , Joplin Freitas Rodrigues Julya
Published: January 2024

Os metaversos são um conceito antigo da tecnologia digital que voltou à tona nos últimos anos, com o avanço dos hardwares de alta potência e o baixo custo. Esse tipo de plataforma tem ganhado cada vez mais atenção de empresas, marcas e consumidores, e promete revolucionar a forma como nos comunicamos, consumimos, aprendemos e ensinamos. Na área da educação, os metaversos oferecem um potencial enorme para tornar o processo de aprendizagem mais inclusivo e imersivo. Por meio de tecnologias como realidade virtual e aumentada, os alunos podem ter acesso a experiências educacionais que seriam impossíveis ou muito caras na vida real.
Solar Energy Prediction Based on Intelligent Predictive Controller Algorithm
Authors: Savarimuthu Linnet Jaya , Victor Kirubakaran , Davaraj Preethi , Pushpanathan Ganeshan , Kandasamy Raja , Pushpanathan Ramshankar , Vinayagam Mohanavel , Barathy Sachuthananthan , Sivakumar Vivek
Published: January 2024

The technological advancement in all countries leads to massive energy demand. The energy trading companies struggle daily to meet their customers’ power demands. For a good quality, disturbance-free, and reliable power supply, one must balance electricity generation and consumption at the grid level. There is a profound change in distribution networks due to the intervention of renewable energy generation and grid interactions. Renewable energy sources like solar and wind depend on environmental factors and are subject to unpredictable variations. Earlier, energy distribution companies faced a significant challenge in demand forecasting since it is often unpredictable. With the prediction of the ever-varying power from renewable sources, the power generation and distribution agencies are facing a challenge in supply-side predictions. Several forecasting techniques have evolved, and machine learning techniques like the model predictive controller are suitable for arduous tasks like predicting weather-dependent power generation in advance. This paper employs a Model Predictive Controller (MPC) to predict the solar array’s power. The proposed method also includes a system identification algorithm, which helps acquire, format, validate, and identify the pattern based on the raw data obtained from a PV system. Autocorrelation and cross-correlation value between input and predicted output 0.02 and 0.15. The model predictive controller helps to recognize the future response of the corresponding PV plant over a specific prediction horizon. The error variation of the predicted values from the actual values for the proposed system is 0.8. The performance analysis of the developed model is compared with the former existing techniques, and the role and aptness of the proposed system in smart grid digitization is also discussed.
Fuzzy Logic-based Power Optimizer for Solar Photovoltaic Power Systems
Authors: Rajaram Revathy Subbiah , Kumar Babu Padaga , Victor Kirubakaran , Kandasamy Raja , Pushpanathan Ganeshan , Sivakumar Vivek , Pushpanathan Ramshankar , Vinayagam Mohanavel , Barathy Sachuthananthan
Published: January 2024

Solar photovoltaics has become the most popular renewable energy source due to its simplicity in installation and maintenance. However, the dependence on the availability of solar energy at the instant makes its operation non-linear. Various optimizing solutions are proposed to rule out this disadvantage. This paper dwells on a machine language approach to solve this problem. A maximal tracker for power points relies on fuzzy logic control. An embedded power optimizer is designed and tested under different environmental conditions through simulation. The results presented allow researchers to test various artificial intelligence techniques for renewable energy extraction processes.
Battery, Super Capacitor-Based Hybrid Energy Storage with PV for Islanded DC Microgrid
Authors: Poudel Yam Krishna , Pudasaini Ramesh Kumar , Kandel Anand , Karki Nava Raj
Published: January 2024

Cogitating the present national as well as global context, renewable energy sources are becoming increasingly popular as a source of electricity, where connecting to the utility grid is either impossible or excessively costly. Several trends that have emerged as electrical distribution technology in the twenty-first century will change the requirements for energy transmission. Green power generating methods are receiving more attention due to the world’s deteriorating environmental conditions, growing prices, the limited nature of fossil fuels, and rising energy demand. The increasing depletion of fossil fuels and the escalating need for energy have made renewable energy sources a global topic of discussion. The incredible advancement of renewable energy has allowed us to address environmental problems. However, the production from these sources could be more predictable, which requires an appropriate energy storage system. The main aim of this research paper is to study the hybrid energy storage with solar photovoltaic for islanded DC microgrid (MG). This research study simulates, analyzes, and presents an islanded mode DC MG with solar photovoltaic (PV), battery, and super capacitor through the use of MATLAB simulink. The maximum power point tracking system uses a two-stage DC converter. The regulated battery energy storage system, coupled through a bidirectional converter, helps to maintain a steady DC bus voltage. The transient and steady-state characteristics of the storage systems are examined. This study demonstrates how quickly hybrid energy storage can adapt to sudden changes in the load.
 
Received: 11 October 2023 | Revised: 15 December 2023 | Accepted: 16 January 2024
 
Conflicts of Interest
The authors declare that they have no conflicts of interest to this work.
 
Data Availability Statement
Data sharing is not applicable to this article as no new data were created or analyzed in this study.
 
Author Contribution Statement
Yam Krishna Poudel: Conceptualization, Methodology, Software, Validation, Formal analysis, Investigation, Resources, Data curation, Writing - original draft, Writing - review & editing, Visualization, Supervision; Ramesh Kumar Pudasaini: Methodology, Validation, Formal analysis; Anand Kandel: Software, Formal analysis; Nava Raj Karki: Investigation, Resources, Project administration.
Mediación pedagógica con un modelo híbrido y una metodología de aula invertida
Authors: Pérez Vences Mayté , Dajer Torres Regina , Villalobos López Marilú , Guerrero Lilia Esther
Published: January 2024

El objetivo del presente artículo es mostrar una estrategia de mediación pedagógica que usa un modelo híbrido, basado en la metodología de aula invertida y el uso de plataforma EMINUS, con la intención de favorecer el autoaprendizaje y la enseñanza a distancia; implementada al interior de la Facultad de Pedagogía, de la Universidad Veracruzana, en México. Se trata de una investigación cualitativa, realizada desde la Investigación – Acción, con un grupo de 30 estudiantes universitarios que cursaron la materia de Desarrollo Humano. Los resultados muestran que hay un incremento significativo en la interacción de los estudiantes, con argumentos fundamentados y aumento en la iniciativa por documentarse. En las conclusiones se destaca la importancia de este modelo para contar con materiales que respondan a las necesidades específicas de cada aprendiente.
Diseño de propuesta de capacitación para fortalecer competencias de docentes químicos, utilizando el agua como eje curricular
Authors: Santamaría de Monteza Yira Araúz
Published: January 2024

Existe una preocupación por la dificultad en el aprendizaje de la Química, tradicionalmente explicada, por la naturaleza de la disciplina; situación que limita la transposición de los saberes al desarrollo sostenible a los que debe responder la formación docente en la actualidad. Tomando como base la situación planteada este estudio tuvo como objetivo diseñar una propuesta de capacitación para docentes químicos panameños, utilizando el agua como eje estratégico. La metodología consistió primero en identificar áreas que requerían reforzamiento aplicando un pretest con preguntas de selección múltiple sobre el agua, su estructura, aspectos interdisciplinares, reacciones y determinaciones analíticas con connotaciones ambientales.  A partir de los resultados, se diseñó un curso con un enfoque de aprendizaje por refuerzo con guías de lectura, transparencias minimalistas, minivídeos docentes modulares, y aprendizaje por investigación contextualizada con actividades colaborativas, muestreo para evaluación de calidad de aguas, así como práctica de diseño de clases y evaluación entre pares. El diseño se demostró con un piloto integrado por 10 docentes, evaluando mediante encuesta y entrevista. Entre algunas conclusiones se puede señalar que la debilidad en determinaciones químico-analíticas para la evaluación de calidad de aguas fue lo más relevante. Además, los docentes percibieron que el método de aprendizaje por refuerzo e investigación fortaleció sus competencias técnicas, ambientales y didácticas de manera integral.
“Migrânea” or “enxaqueca”: A historical and semantic review
Authors: Soares Adriana de Almeida , Fortes Yasmine Maria Leódido , Souza Wallyson Pablo de Oliveira , Silva-Néto Raimundo Pereira
Published: January 2024

IntroductionHeadache is as old as the emergence of man on earth. A classification for headaches has been suggested for many centuries. After the invention of writing, numerous words were created to designate different types of headache.ObjectiveThe objective of this review was to discuss the historical and etymological aspects of the terms “migrânea” and “enxaqueca”.MethodsThis study was an integrative review using articles with historical data on the etymology of the terms “migrânea” and “enxaqueca” and their evolution over the years.ResultsThe terms “migrânea” and “enxaqueca” have Greek and Arabic origins, respectively. Both describe a neurological syndrome characterized by headache and other associated symptoms. Usually, sufferers of this disease are more familiar with the term “enxaqueca” and confuse it with headache, while health professionals prefer the term “migrânea”. ConclusionsAfter so many years that the term "migrânea" has been used, it would be a step backwards to use the term "enxaqueca" again, especially because "migrânea" has been adopted by young neurologists, including those from other specialties.
Why does ingestion of watermelon trigger headache attacks in patients with migraine?
Authors: Silva-Néto Raimundo Pereira , Soares Adriana de Almeida , Lopes Luciano da Silva
Published: January 2024

Several triggers can trigger a migraine attack, including food. By the way, food only triggers headache in migraine sufferers. The foods that most trigger headache attacks are these: cheese, chocolate, citrus fruits and some sweet fruits, such as watermelon.
Case Report of Compensated Idiopathic Intracranial Hypertension due to Traumatic Cerebrospinal Fluid Fistula
Authors: Queiroz Apolônio Peixoto de
Published: January 2024

IntroductionDisorders of intracranial pressure, both Intracranial Hypertension (IH) and Cerebrospinal Fluid Hypotension (CSFH), are causes of headache and can impair quality of life and lead to various complications. These conditions can cause symptoms such as transient visual loss, tinnitus, gait and balance disturbances, but positional headache is the main symptom. In this report, we present the case of a patient who was diagnosed with Idiopathic Intracranial Hypertension (IIH) and later developed a change in the pain pattern, caused by traumatic Cerebrospinal Fluid Fistula.ObjectiveTo report the case of a patient diagnosed with Idiopathic Intracranial Hypertension (IIH), who had a good response to medical treatment for several years but experienced worsened headache and a change in pain pattern (becoming orthostatic) following a Traumatic Brain Injury (TBI).ResultsFemale patient, 33 years old, obese, accompanied in an outpatient headache clinic in Joao Pessoa - PB. In 2018, she presented with a progressive holocranial headache that worsened with dorsal decubitus, accompanied by transient visual darkening. She was diagnosed with IIH after a cerebrospinal fluid (CSF) collection and exclusion of other causes. Since then, she has been taking Topiramate and making lifestyle changes, such as regular physical activity, dietary changes, and weight loss, resulting in significant improvement of symptoms for a few years. In January 2023, she suffered a mild TBI (hit her head on a cabinet) and a few days later, she started experiencing intense and almost daily headaches, but different from the previous ones. Now, the pain worsened or appeared in upright position and was accompanied by clear, colorless, odorless, fluid and constant rhinorrhea in the right nostril, ear fullness, nausea, and occasional vomiting. At that time, she stopped the medication and had partial improvement of symptoms.After reporting these events during the follow-up appointment, she underwent investigation with Magnetic Resonance Imaging (MRI) with cerebrospinal fluid flow study, which revealed a frontoethmoidal meningoencephalocele through a bone defect in the cribriform plate. In a joint decision with the Neurosurgery team, it was opted not to correct the fistula and to proceed with a ventriculoperitoneal shunt. She had a great improvement after the procedure, was discharged days later without symptoms.ConclusionTherefore, we report a case of a patient with secondary headache due to IIH that achieved good symptom control for several years. However, after a MTI injury, the headache recurred with a new pattern and was accompanied by new symptoms. She was diagnosed with a Cerebrospinal Fluid Fistula and Meningoencephalocele, and underwent ventriculoperitoneal shunt placement. She showed good progress and response to treatment.
Establishing Diversity, Equity, and Inclusion Priorities for Occupational Therapy Research
Authors: Johnson Khalilah R. , Washington Selena E. , Hoyt Catherine R. , Banks Tyra M. , Román-Oyola Rosa , Hamed Razan
Published: January 2024

In this State of the Science column, we examine evidence that aligns common applications of diversity, equity, and inclusion (DEI) and occupational therapy research and suggest areas of focus to advance a culturally affirming and antiracist science of occupation. More specifically, we describe why DEI is important to the study of occupation, identify DEI gaps in the occupational therapy knowledge base, suggest DEI priorities for occupational therapy research and their implications for practice, and recommend practical strategies for occupational therapy scholars to apply in more immediate efforts to address DEI in their research endeavors.
Atitudes dos profissionais de saúde portugueses face ao álcool e às pessoas com consumo problemático
Authors: Seabra Paulo , Nunes Inês , Silva Vanessa , Valentim Olga , Pinho Lara , Moutinho Lídia , Curado Alice , de Vargas Divane
Published: January 2024

Introdução: A problemática do álcool e o seu impacto nas sociedades tem merecido cada vez mais atenção pelos decisores políticos e organizações de saúde. Os profissionais de saúde, como a população em geral, constroem significados e desenvolvem comportamentos e atitudes em relação ao álcool e às pessoas com consumos problemáticos, que influenciam a sua prática profissional e impactam a relação com as pessoas (Crothers et al., 2011). Contudo, as atitudes e comportamentos dos profissionais de saúde em Portugal não estão ainda descritas. Objetivos: Caracterizar as atitudes dos profissionais de saúde portugueses face ao álcool, ao seu consumo, e na relação com pessoas com consumo problemático. Material e Métodos: Estudo descritivo, correlacional, transversal e quantitativo, realizado em 2021. Parecer positivo pela Comissão de Ética da ARSLVT (1903/CES/2021). Utilizada a Escala de atitudes face ao álcool, aos problemas ligados ao álcool e às pessoas com perturbação por consumo de álcool – EAFAA-PT (Seabra et. al., 2022ª; Seabra et. al., 2022b), com 471 profissionais (médicos, enfermeiros, psicólogos e assistentes sociais) que responderam a um questionário. Resultados: Participantes com idade média de 44.7 anos (DP=11.5), 80.5% mulheres. Maioritariamente enfermeiros (53.1%) e médicos (30.6%), com média de 20.5 anos (DP=11.2) de prática profissional. Da amostra, 71.2% têm experiência profissional com pessoas com consumo problemático de álcool, 24.5% nunca tiveram acesso a formação académica sobre a temática e 57.9% nunca tiveram formação em serviço. 45.2% têm familiares com consumo problemático. 30.1% demonstram atitudes negativas, sendo os enfermeiros aqueles com atitudes menos positivas e os psicólogos aqueles com atitudes mais positivas. Não se identificam diferenças face ao sexo ou tempo de prática profissional. Quanto maior a idade, mais negativas são as atitudes (r=-0.105; p<0.015). Aqueles que não cuidam de pessoas com consumo de álcool têm atitudes mais negativas (Wt(331)=-4.182; p<0.001). Conclusões: Os profissionais de saúde portugueses apresentam, de uma forma global, atitudes positivas. Contudo, mais de um quarto demonstra atitudes negativas, com destaque para os enfermeiros. Não se encontraram diferenças nas atitudes entre aqueles que têm familiares com consumo problemático de álcool e os que não têm. É necessária mais investigação para compreender os fatores preditores das atitudes negativas face ao álcool.
Sociocracia 3.0: Um modelo de agilidade e resiliência aplicado ao núcleo académico da Terapia Ocupacional da RACS
Authors: Martins Sílvia , Moreira Nuno , Maiela Ângelo , Roldão Elisabete , Braúna Costa Mónica , Faias Joaquim
Published: January 2024

Introdução: No processo de reativação do Núcleo Académico de Terapia Ocupacional (NATO) da Rede Académica das Ciências da Saúde da Lusofonia (RACS), identificou-se a necessidade de um modelo de governança sustentável, que permitisse a manutenção da motivação e envolvimento dos seus membros, ao longo do tempo. Num núcleo académico (NA) que se pretende inclusivo e potenciador da diversidade dos seus elementos, estabeleceram-se critérios para este modelo como, gestão participativa, canais de comunicação claros, equidade e transparência nos processos de tomada de decisão e autonomia dos grupos de trabalho. A Sociocracia 3.0 (S3) foi escolhida como a tecnologia social adequada, para atender a estes critérios e permite navegar a complexidade, facilitar a colaboração e construir de organizações ágeis e resilientes (Priest, Bockelbrink, David, 2022; Czekaj, Walczak, Ziębicki, 2020). Objetivos: Analisar o processo de implementação de um modelo de governança e tomada de decisão para o funcionamento do NATO. Metodologia: Após selecionar a tecnologia social S3, identificaram-se ferramentas adequadas que não sobrecarregassem o sistema e as tarefas, optando-se por uma implementação faseada das mesmas. Inicialmente, criou-se um fluxograma para a comunicação e tomada de decisão nos grupos de trabalho e entre estes e os órgãos do NATO/RACS e incluíram-se check-in e check-out nas reuniões. Numa segunda fase, elaborou-se uma carta de princípios para orientar todas as ações do NATO. Estas abordagens envolveram todos os elementos de forma significativa. Resultados: Nesse processo, o NATO cresceu para 23 elementos de 5 instituições (4 de Portugal e 1 de Moçambique). Foram realizadas 9 reuniões gerais do NA, com uma média de 14 participantes. Organizaram-se duas Conferências Lusófonas de Terapia Ocupacional, participou-se em todas as reuniões internacionais da RACS e o NATO esteve representado em todas as reuniões com a comissão coordenadora dos núcleos académicos da RACS. No âmbito do NATO foram publicados 15 artigos e um suplemento na revista RevSALUS, respeitante à 1ªCLTO, com 28 publicações. Conclusões: Este modelo de trabalho permitiu interagir com os diversos órgãos de decisão e gestão da RACS, garantindo a participação equitativa, liberdade de expressão, transparência e sustentabilidade. Acreditamos que a implementação deste modelo teve um impacto significativo nos resultados alcançados no NATO.