bluuebunny/crossref_metadata_2025 huggingface dataset:
Students’ perceptions of teacher performance in teaching: A case of university students
Authors: Trisnawati Ika Kana , Helmanda Cut Mawar , Saputri Ardella
Published: April 2024

The study aimed to explore the university students’ opinions on teacher performance in terms of the instruction, motivation, and management during class. The study used a quantitative method, employing a questionnaire as the instrument to collect data. The participants of the study was 43 students majoring in English Education at a private university in Banda Aceh, Aceh, Indonesia. The study selected the participants by using random sampling. Data collected were analyzed by calculating the percentage. The results indicated that the students had positive opinions towards the instruction, motivation and management provided by their lecturers in the class. The study suggests that English instructors should provide proper instruction, motivation, and class management so that the students can become more enthusiastic in learning English within an engaging classroom.
Algorithms for Reliability Estimate as a Test – Quality Indicator
Authors: Abe Thomas Olabode , Olofin Samuel Oluwaseyi
Published: April 2024

This study examined the algorithms for reliability estimate as a test-quality indicator. It was discussed along the methods of estimating reliability such as: Test-retest as measures of stability, Equivalent or Alternative –forms reliability as measures of equivalence and stability, while the measures of internal consistency are Split-half, Kuder-Richardson 20 and 21, Coefficient alpha, Hoyt’s analysis of variance, Scorers (Judge) reliability and Inter-rater reliability. Also, using the reliability coefficient as a Test quality indicator was addressed and variables that affect reliability estimate are itemize as test length, test content, test difficulty, item discrimination, group heterogeneity, student motivation, students testwiseness, time limit and security precautions. Therefore, this paper recommends that, in order to demystify the course at any level of our educational system, specialist in the field of Tests, Measurement and Evaluation should be strictly allowed to handle the course and every professional teachers should be abreast to the procedural ways of estimating reliability of test in the classroom examination as a quality indicator in the teachers’ made test.
Disponibilidad y Accesibilidad de Servicios de Salud Sexual y Reproductiva para Adolescentes en la Zona Sur de Manabí: Revisión de Evidencia y Recomendaciones
Authors: Quiroz Villafuerte Viviana Marianela , Tumbaco Rodríguez Shirley Lissette , Acuña Mieles Gema Abigail , Zambrano Romero Jeniffer Estefania , Catagua Manrique Danny Noel , Bravo Granda Jailene Jamileth , Flores Saltos María Daniela
Published: April 2024

La disponibilidad y accesibilidad de servicios de salud sexual y reproductiva para adolescentes es de vital importancia para garantizar su bienestar y promover una vida sexual saludable, estos servicios se refieren a la atención médica, la información y el apoyo que se brinda a los adolescentes en relación con su salud sexual y reproductiva. La dificultad que los adolescentes enfrentan hoy en día sobre su salud sexual y reproductiva son variadas y complejas, e incluyen conductas sexuales de riesgo, embarazos no deseados y la adquisición de infecciones de trasmisión sexual. Objetivo, evaluar la disponibilidad y accesibilidad de servicios de salud sexual y reproductiva para adolescentes en la zona sur de Manabí. El diseño del estudio fue una revisión sistemática de estudios empíricos, utilizando una estrategia bien definida, se realizaron búsquedas exhaustivas en revistas en línea utilizando Web of Science, Google Scholars, PubMed y Medline. La revisión reveló que la mayoría de los adolescentes no estaban familiarizados con los servicios de salud sexual y reproductiva adaptados para su grupo de edad, y algunos proveedores de atención médica tampoco respaldaban estos servicios, lo que explicaba la baja utilización de los mismos por parte de los adolescentes, concluyendo que, se destaca la necesidad de que los responsables de formular políticas en todos los niveles del sistema de atención médica consideren los factores observados en esta revisión y desarrollen estrategias que garanticen la disponibilidad y accesibilidad.
Os Traços de Personalidade de Indivíduos de Extremo Alto QI são Resultados de uma Necessidade Biológica e Genética
Authors: Agrela Fabiano de Abreu
Published: April 2024

Este artigo explora a hipótese de que os traços de personalidade em indivíduos com extremo alto QI são manifestações biológicas derivadas de necessidades neurogenéticas específicas. A investigação centra-se na análise da relação sináptica entre a genética predisponente à alta capacidade cognitiva e a consequente configuração da personalidade. Através de uma abordagem interdisciplinar, que engloba neurociência, psicologia e genética comportamental, discutimos como variações genéticas influenciam não apenas a arquitetura neural, mas também modulam características de personalidade. Esse estudo postula que genes associados a uma maior capacidade intelectual promovem uma intensificação da atividade cerebral, levando a um incremento na formação de engramas de memória e conexões sinápticas. Essa dinâmica cerebral intensa, argumentamos, é um fator determinante na formação de traços de personalidade únicos em indivíduos de extremo alto QI. A análise propõe uma nova perspectiva sobre a interação entre capacidade cognitiva e personalidade, sugerindo que a última pode ser, em parte, um produto direto de imperativos biológicos e genéticos.
The Transformative Role of the Teacher Development and Training Program in the Academic Experience of the Students of the Hispanoamerican University of Costa Rica
Authors: Mejia Aguero Francini , Rodriguez Pastor Karla , Castro Miranda Julio César
Published: April 2024

This article addresses the crucial importance of teacher training and professional development in the educational context of the Universidad Hispanoamericana in Costa Rica. It emphasizes the relevance of education as a fundamental pillar for improving social well-being and sustainable economic growth, adapting to advances in science and technology. Teacher professional development is considered essential to enhance the quality of education, promotes equity, and reduces educational inequalities.The text explores strategic planning in teacher training, highlighting the significance of virtual education, assessment based on neurolearning, university didactics, and the relationship between the brain, well-being, and education. The article introduces the Teacher Training and Development Program at Universidad Hispanoamericana, aiming to enhance educational quality through innovative and disruptive approaches. Certification areas are detailed, including induction for new teachers, virtual learning environments, assessment and neurolearning, university didactics, brain and well-being, artificial intelligence, and the use of emerging technologies, as well as communication skills and curriculum management. The article concludes by emphasizing the goal of Universidad Hispanoamericana to build a highly skilled learning community, positioning itself as a leading institution in academic excellence and promoting continuous evaluation of its activities aligned with its pedagogical model.
Tecnopedagogía en la Formación Profesional de los Estudiantes de las Carreras Pedagógicas
Authors: Santos Vásquez Cecibel del Cisne , Cango Patiño Adriana Elizabeth
Published: April 2024

La vinculación de las Tecnologías de la Información y Comunicación (TIC) en la educación ha dado pasos agigantados en el proceso de enseñanza – aprendizaje a través del uso de diferentes recursos tecnológicos que mejoren el proceso educativo; por lo que se propone actualmente una metodología tecnopedagógica en la construcción de métodos, de ahí que el presente artículo tiene como objetivo principal analizar el impacto de la tecnopedagogía en la formación profesional, examinando e identificando los recursos y el aporte en dicha formación,  investigación de tipo exploratoria, descriptiva y estadística con base al método científico; a través de la recolección de la opinión de los estudiantes, con la aplicación de una encuesta con cuestionario que centra en determinar que recursos tecnopedagógicos son usados y su aporte a la formación profesional. En base a ellos se encontró que los principales recursos usados son la plataformas, herramientas y aplicaciones educativas; recalcando el gran aporte de la tecnopedagogía en el proceso de formación profesional desarrollando habilidades y destrezas aliadas a la educación en el mundo innovador que nos encontramos, al sugerir que la tecnopedagogía es crucial para implementar estrategias innovadoras que fortalecen el conocimiento en los educandos para reflexionar de manera innovadora y creativa.
Redes Sociales y su Impacto en el Entorno Digital de las Empresas
Authors: Moreano Guerra Carlos Bladimir , Escobar Erazo Tania Eslavenska , Haro Haro Edwin Ramiro , Villagomez Valencia Paulina Alexandra
Published: April 2024

Las redes sociales han cambiado de forma radical el entorno digital de las compañías, en la actualidad no son solamente plataformas empleadas para enlazar con familiares y amigos, sino además son herramientas fundamentales para establecer optimas relaciones con los clientes, promover la expansión del negocio, e incrementar la perceptibilidad de las marcas. El presente estudio tiene como principal objetivo determinar el impacto que han causado las redes sociales en el entorno digital de las empresas, utilizando una metodología de tipo tanto analítica como descriptiva, analizando diversas páginas web, artículos, tesis, entre otros, así como la aplicación de una encuesta que mostró como resultado una muy buena aceptación de los medios digitales por parte de las entidades, señalando que, al aplicarla como una estrategia de marketing, esta contribuye a incrementar los niveles de venta, llegando a una gran cantidad de personas, y permitiendo a los negocios mantenerse comunicados con los consumidores. Se obtuvo como conclusión que este medio social es considerado como una poderosa herramienta que puede contribuir a que las organizaciones alcancen sus objetivos comerciales. Resulta fundamental comprender el impacto de este en el entorno digital a fin de delinear una efectiva estrategia que facilite aprovechar sus beneficios al máximo.
Percepción de la Simulación con Paciente Estándar en Estudiantes de Psicología de Costa Rica
Authors: Parra Parra Beatriz Elena , Chinchilla Fonseca Paula , Vásquez Orjuela Diana
Published: April 2024

El estudio examina la percepción de la simulación clínica en estudiantes de psicología en la Universidad Hispanoamericana de Costa Rica. A través de un enfoque cuantitativo, se analizaron las respuestas de los participantes a afirmaciones relacionadas con las fases de prebriefing, escenario y debriefing. Los resultados revelaron una percepción positiva general hacia la simulación, destacando la importancia del prebriefing para construir confianza y mejorar el proceso de aprendizaje. La fase de escenario contribuyó significativamente al desarrollo de habilidades prácticas y la comprensión profunda de patologías. Asimismo, el debriefing fue valorado como una herramienta valiosa para el aprendizaje y la mejora del juicio clínico. Aunque los hallazgos respaldan la efectividad de la simulación en la formación psicológica, se sugieren investigaciones futuras para explorar factores específicos que puedan influir en la percepción de la simulación en diferentes contextos educativos
ETHNOCULTURAL AND LINGUISTIC FEATURES OF PAMIR-SPEAKING COMMUNITIES AT DIFFERENT STAGES OF MIGRATION PROCESSES
Authors: Dodykhudoeva Leyli R.
Published: April 2024

The article determines the place of mother tongues in the life of Pamir-speaking communities, their transformation and functioning at different stages of the migration process. It outlines features that enhance our understanding of the phenomenon of Pamir diaspora. The linguistic and cultural priorities of diasporic Pamir communities are identified in light of their linguistic ideology, and ethno-religious and cultural perspectives. To study the dynamics of language life in different contexts, data on language biographies are presented, together with an analysis of the work of grassroots activists, who, by their lingua-cultural creativity, are involved in promoting their cultural and linguistic heritage, thus demonstrating their sociolinguistic rights. Analysis of the mother tongue – an important marker of the community’s socio-cultural life – reveals that Pamir languages lie at the core of the community’s cultural heritage, its spiritual and material traditions. These languages fulfil reproductive, creative and existential-ethical functions, acting as a reference point for socio-cultural practices that stimulate the revival of local culture and support the preservation of traditional cultural values. The prospects for the functioning, development and preservation of Pamir languages in the diaspora are considered.
The correlation between neutrophil lymphocyte ratio in pregnant women with COVID-19 and neonatal outcome
Authors:   Department of Child Health, Faculty of Medicine, Airlangga University, “Dr. Soetomo” General Academic Hospital, Surabaya, Easy Java, Indonesia, Haliza Wilda , Utomo Martono Tri ,   Department of Child Health, Faculty of Medicine, Airlangga University, “Dr. Soetomo” General Academic Hospital, Surabaya, Easy Java, Indonesia, Handayani Kartika Darma ,   Department of Child Health, Faculty of Medicine, Airlangga University, “Dr. Soetomo” General Academic Hospital, Surabaya, Easy Java, Indonesia
Published: April 2024

Background and objectives. Coronavirus Disease 2019 (COVID-19) in pregnancy periods can adversely affect the neonatal outcomes. Neutrophil Lymphocyte Ratio (NLR) were reported as sensitive markers and good predictor of COVID-19 progression in symptomatic pregnant women. The aim of this study to find correlation on NLR value of the pregnant women with COVID-19 to the neonatal outcome. Materials and methods. We retrospectively included neonates who was delivered from pregnant women with COVID-19 at Dr. Soetomo Hospital from June 2021 to July 2022. NLR value of the pregnant women were calculated. Demographic data and clinical characteristic were taken from medical records. The diagnosis of COVID-19 in pregnant women is confirmed by PCR nasopharyngeal swab, as well as in the neonates who undergo nasopharyngeal swab a maximum of 24 hours after birth. Results. Total of 1058 births delivered between June 2021- July 2022, 224 neonates (21.17%) met inclusion criteria. We analyzed the severity of maternal factors described by NLR and correlated with neonate outcomes, such as mortality, Apgar Score (AS), birth weight, gestational age, type of delivery and Polymerase Chain Reaction (PCR) swab of the neonates. the results of our analysis, the maternal NLR was correlated with the birth weight (p=0.005). However, NLR of the pregnant women are not correlated with mortality of the neonates (p=0.681), type of delivery (p= 1), AS at 1 minute (p= 0.158), AS at 5 minutes (p= 0.158), gestational age (p= 0.110) length of stay (LOS) (p=0,258) and PCR swab of the neonates (p= 1). Conclusions. NLR value in the majority of pregnant women with COVID-19 was found to be increasing, but these results are not related for the neonatal outcome except the birth weight.
Variable role of diet-related risk factors for colorectal cancer – A cross-sectional analysis of regional differences
Authors:   Department for Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, “Josip Juraj Strossmayer” University of Osijek, Osijek, Croatia, Rolić Tara ,   Institute of Clinical Laboratory Diagnostics, University Hospital Centre Osijek, Osijek, Croatia, Lukić Iva ,   Department for Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, “Josip Juraj Strossmayer” University of Osijek, Osijek, Croatia,   Institute of Clinical Laboratory Diagnostics, University Hospital Centre Osijek, Osijek, Croatia, Mandić Sanja ,   Department for Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, “Josip Juraj Strossmayer” University of Osijek, Osijek, Croatia,   Institute of Clinical Laboratory Diagnostics, University Hospital Centre Osijek, Osijek, Croatia, Tomaš Ilijan ,   Department of Oncology, University Hospital Center Osijek, Osijek, Croatia,   Department of Nuclear Medicine and Oncology, Faculty of Medicine, “Josip Juraj Strossmayer” University of Osijek, Osijek, Croatia, Banjari Ines ,   Department of Food and Nutrition Research, Faculty of Food Technology, “Josip Juraj Strossmayer” University of Osijek, Osijek, Croatia
Published: April 2024

Background and objectives. Diet is the crucial environmental factor in sporadic colorectal cancer. Its complexity and diversity reflect our cultural and historical background, and could potentially explain why the existing public health strategies focused on colorectal cancer are failing. Materials and methods. An observational cross-sectional study encompassed 60 non-metastatic CRC patients to assess dietary factors related to colorectal cancer, with regard to their traditional diet i.e. the region they come from. Patients were recruited from two regions (30 patients per region), in one (Slavonia) traditional diet is abundant in well-known dietary risk factors for colorectal cancer, and in the second (Dalmatia) traditional diet is the Mediterranean type. Results. Based on the logistic regression analysis, patients from Dalmatia have a 24% higher risk for the high-risk diet in comparison to patients from Slavonia (OR = 1.240, 95% CI 1.195 – 9.990, P=0.022). Identified independent risk factors include weight loss in the last 3 months along with daily alcohol consumption which were found to increase CRC risk by 61.4% and 53.1%, respectively. Conclusions. Our results support statistical data showing that colorectal cancer incidence is higher in the Mediterranean region, suggesting a shift in the Mediterranean dietary pattern, which in our case were higher obesity rates, daily alcohol consumption and abundance of unfavorable dietary habits.
Prospective study of coagulation parameters in septicemic patients
Authors:   Department of General Medicine, Saveetha Medical College, Chennai, Tamil Nadu, India, Krishna Geetha N. , Vaishnavi K.I.S.N. ,   Department of General Medicine, Saveetha Medical College, Chennai, Tamil Nadu, India, Jagadeswar Kakumani ,   Department of General Medicine, Saveetha Medical College, Chennai, Tamil Nadu, India, Gowri Shankar A. ,   Department of General Medicine, Saveetha Medical College, Chennai, Tamil Nadu, India
Published: April 2024

Background and objectives. Sepsis is a critical clinical syndrome characterized by a systemic host response to infection, often leading to organ dysfunction and mortality. The association between early onset coagulopathy and mortality risk in septicemic patients remains an area of active investigation. This study aims to assess the association between early onset coagulopathy and increased mortality risk in septicemic patients. It also seeks to explore the role of procalcitonin (PCT) levels and demographic factors in the prognosis of septicemia. Material and methods. A cross-sectional study was conducted at Saveetha Medical College and Hospital, including 240 subjects who met the inclusion criteria. Patients were evaluated for the presence of coagulopathy (assessed by platelet count, INR, and aPTT values) and their PCT levels within 48 hours of admission. Data on demographic characteristics, underlying illnesses, and 28-day mortality were collected and analyzed. Results. The study population had a male preponderance (53.3%) with a mean age of 56.27 years. Diabetes mellitus was the most common underlying illness (32.5%). Coagulopathy was observed in 52.5% of patients, with thrombocytopenia and deranged INR and aPTT being significant indicators. Patients with life-threatening thrombocytopenia, severe PT-INR, and aPTT derangements showed high mortality rates (100%, 92.4%, and 90%-95.6% respectively). Mortality was significantly associated with coagulopathy and elevated PCT levels (>10.0 ng/ml), with 41.7% of subjects dying within 28 days of admission. Conclusions. Early onset coagulopathy is significantly associated with increased mortality in septicemic patients, highlighting the importance of coagulation parameters and PCT levels in predicting outcomes indicating prompt recognition and management of coagulopathy in septicemia, especially in younger patients and those with elevated PCT levels.
An unusual presentation of thyrotoxicosis
Authors:   Department of General Medicine, Saveetha Medical College And Hospital, Thandalam, Chennai, Tamilnadu, India, Rangan Abinaya Srinivasa , Dhanush Balaji S. ,   Department of General Medicine, Saveetha Medical College And Hospital, Thandalam, Chennai, Tamilnadu, India, Saranya C. ,   Department of Rheumatology, Saveetha Medical College And Hospital, Thandalam, Chennai, Tamilnadu, India, Prasanna Karthik S. ,   Department of General Medicine, Saveetha Medical College And Hospital, Thandalam, Chennai, Tamilnadu, India
Published: April 2024

Cardiac dysfunction in thyrotoxicosis is believed to arise from changes in preload, afterload, heart rate, and contractility. Cardiomyopathy is a less frequent cardiac complication linked to thyrotoxicosis. Here, we present a rare case of thyrotoxicosis induced cardiomyopathy in a 30-year-old male, where dilated cardiomyopathy manifested as the initial sign of thyrotoxicosis. The patient was treated with antithyroid drugs, diuretics and beta blockers. General surgery opinion obtained and planned to do thyroidectomy after euthyroid status. Patient was followed up and after 6 weeks was symptomatically better and was found to be euthyroid and repeat 2D ECHO showed an improvement in systolic function with EF of 55% and the patient was planned for thyroidectomy. In the management of thyrotoxicosis induced cardiomyopathy, pharmacological interventions involve the use of specific thyroid therapies such as thionamides (methimazole, carbimazole, propylthiouracil) and beta-blockers, coupled with heart failure management.
Achalasia and hyperthyroidism: A co-occurrence revealing autoimmune connections
Authors:   Department of General Medicine, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India, Simon Jibin , Rajalakshmi K. V. ,   Department of General Medicine, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India, Ananthakumar P. K. ,   Department of General Medicine, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India, Bhubaneswar  ,   Department of General Medicine, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India, Bose Sharan ,   Department of General Medicine, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
Published: April 2024

Achalasia is a rare esophageal motility disorder characterized by an unknown etiology, myenteric inflammation, and autoimmune markers. We present a case of a 43-year-old female with progressive dysphagia, regurgitation, generalized weakness, and hair loss. Despite normal cranial nerves and normal laboratory values, upper GI endoscopy revealed pangastritis, while manometry indicated type 2 achalasia cardia. The patient underwent laparoscopic Heller's myotomy for achalasia and received treatment for hyperthyroidism. The discussion explores the autoimmune aspects of achalasia and its rare association with hyperthyroidism. Early diagnosis and management are crucial for improving patient outcomes.
The New Integral Transform "Mohand Transform"
Authors: Özdoğan Nihal
Published: April 2024

Investigating solutions of differential equations has been an important issue for

scientists. Researchers around the world have talked about different methods to solve

differential equations. The type and order of the differential equation enabled us to

decide the method that we could choose to find the solution of the equation. One

of these methods is the integral transform. Integral transform is the conversion of a

real or complex valued function into another function by some algebraic operations.

Integral transforms are used to solve many problems in mathematics and engineering,

such as differential equations and integral equations. Therefore, new types of integral

transforms have been defined and existing integral transforms have been improved.

One of the solution methods of many physical problems also initial and boundary

value problems are integral transforms. Integral transforms were introduced in the first

half of the 19th century. The first historically known integral transforms are Laplace

and Fourier transforms. Over the time, other transforms have emerged that are used

in many fields. In this article, mohand transform was described and used to simplify

the solution of linear ordinary differential equations with constant coefficients.
Production of Bioethanol Based on Eichhornia crassipes Combined with the Pulp of the Ripe Fruit of Azadirachta indica
Authors: Dzokom Alexis , Balna Jules , Tizé Koda Joël , Watang Zieba Félix , Djouldé Darman Roger
Published: April 2024

The management of invasive plants such as Eichhornia crassipes and the fruits of Azadirachta indica on the banks of the waters of Lake Chad in the Far North of Cameroon remains a challenge to overcome. On the other hand, given the urgency of finding other sources of energy following the scarcity of fossil fuels, it becomes appropriate to turn to renewable energies obtained from lignocellulosic biomasses which constitute an opportunity to be seized as cooking energy. The objective of this study is to determine the ethanoic potential of the biomass of Eichhornia crassipes associated with the pulp of Azadirachta indica. Thus, the production of bioethanol from the biomass of Eichhornia crassipes associated with the pulp of Azadirachta indica was done by biochemical route which results in: physical pretreatment of the raw material, thermo-mechanical pre-hydrolysis chemical, alcoholic fermentation with Lactobacillus fermentum yeast in batch mode and distillation. Measuring the pH and volatile fatty acid (VFA) content in different fermented samples made it possible to determine the optimal conditions for better fermentation. During 135 hours of fermentation, with 1281.25±1.09 ml of initial raw material fermented, it was possible to obtain on average 675.47±1.02 ml/g of hydrated ethanol and 640.62 ±5.07 ml/g of CO2 with an average weight yield of 52.72±3.57%. Thanks to a yeast contribution of 2.5% relative to the dry matter and an L/S ratio = 20, the dosage of the distillate obtained after distillation of the fermented must by the chronometric method made it possible to determine the ethanoic concentration of the solutions studied which is on average 0.94±0.01%V/V of distillate per fermented biomass.
Discharge and Performance Investigation of Unconventional Diesel Combination in Compressed Ignition Engine
Authors: Karthikeyan V. , Kathiresan M. , Kamalesh S. , Abinesh S.
Published: April 2024

The world is confronted with the twin emergencies of fossil fuel consumption and natural corruption. The erratic extraction and utilization of fossil fills have driven to a lessening in petroleum saves.The expanding moment charge has required the seek forfluid powers as an elective to diesel, which is being utilized in expansive amounts in transport, farming, mechanical, commercial and household segments. In this paper, an endeavor has been made to examine foursorts of ~lls are considered ( 100% unadulterated diesel-D100 ; 30% of crude corn oil mixed with 70% immaculate diesel; 25% Methyl Ester of corn oil with 5% of Diethyl Ether mixed with 70% unadulterated diesel; 25% Methyl Ester of corn oil blended with 5% of Hydrogen Peroxide is mixed with 70% unadulterateddiesel,. 25% Methyl Ester of corn oil blended with 5% of Butane 1-ol is mixed with 70% unadulterated diesel, 25% Methyl Ester of corn oil blended with 5% ofPropane 2-ol is mixed with 70% unadulterated diesel, Out which the ~nal ~ve sorts have been considered as an elective ~lls are tried in compressed start 4 stroke diesel motor, The different execution and emanation parameters like., brake warm effectiveness, particular fuel utilization, smoke, CO, HC, NOx, CO2, O2 and the deplete gas temperatures were measured and analyzed.The tests appeared noteworthy change in motor execution compared to unadulterated diesel conjointly an increment within the brake warm efficiencies and particular fuel utilization were taken note in biodiesel combinations compared to immaculate diesel. The smoke, CO, NOx, CO2 and HC out flows of the motor were found to be viably diminished with this combination.
Machine Learning and Big Data Analytics for Precision Cardiac RiskStratification and Heart Diseases
Authors: . Gagandeep , Saini Dapinty , Kaur Shubhpreet , Singh Manmohan
Published: April 2024

The data explosion hasushered in a new era where insights are mined from vast data pools known as big data. Strategies for harnessing this data have emerged as critical decision-making tools across fields, employing various data analysis methods. Data mining techniques play an essential role in extracting meaningful patterns and insights. Thispaper focuses on the intersection of data mining and healthcare, particularly the critical concern of heart disease prediction.It presents a novel system that estimates heart attack risk, combining data mining with machine learning. Employing classification, the system stratifies data intotwo classes: heart disease presence or absence. Two powerful algorithms,decision tree classification and Naïve Bayes classification, enhance accuracy in predicting heart disease risk, achieving up to 91% and 87% accuracy, respectively. This review paper comprehensively analyzes the system's architecture, methodologies, and outcomes in healthcare, emphasizing data mining and machine learning's potential in medicine. Subsequent sections delve into methodology, results, and implications,providing a holistic view of this innovativeapproach.
Természeti katasztrófák tendenciális változásainak elemzése, értékelése
Authors: Teknős László
Published: April 2024

Aim: The aim of this article is to examine the terminology behind natural disasters and to group them together to give readers an insight into the world of natural hazards. The author also aims to describe the quantitative changes that have occurred in recent years.Methodology: The definitions are based on the presentation of concepts used by key authorities. Categorisation and trend analysis is based on international discourse, databases and reports from relevant bodies and organisations.Findings: The security environment is changing dramatically. One reason for this is that there is a clear increase in a number of categories of natural events (disasters). As regards definitions, there is no uniform concept, but disasters are exceptional events with significant material damage.Value: Through the author’s analytical and evaluative work, the reader will gain insight into the world of natural disasters, a broad knowledge of the relevant literature, and valuable insights into global vulnerability and changing trends.
Scalar Curvature Rigidity of Warped Product Metrics
Authors:   Universit&, Bär Christian ,   #228,   t Potsdam, Germany, Brendle Simon ,   Columbia University, USA, Hanke Bernhard ,   Universität Augsburg, Germany, Wang Yipeng ,   Columbia University, USA
Published: April 2024

We show scalar-mean curvature rigidity of warped products of round spheres of dimension at least 2 over compact intervals equipped with strictly log-concave warping functions. This generalizes earlier results of Cecchini-Zeidler to all dimensions. Moreover, we show scalar curvature rigidity of round spheres of dimension at least 3 with two antipodal points removed. This resolves a problem in Gromov's ''Four Lectures'' in all dimensions. Our arguments are based on spin geometry.
Prototype Faraday Rotation Measure Catalogs from the Polarisation Sky Survey of the Universe’s Magnetism (POSSUM) Pilot Observations
Authors: Vanderwoude S. , West J. L. , Gaensler B. M. , Rudnick L. , Van Eck C. L. , Thomson A. J. M. , Andernach H. , Anderson C. S. , Carretti E. , Heald G. H. , Leahy J. P. , McClure-Griffiths N. M. , O’Sullivan S. P. , Tahani M. , Willis A. G.
Published: April 2024

The Polarisation Sky Survey of the Universe’s Magnetism (POSSUM) will conduct a sensitive ∼1 GHz radio polarization survey covering 20,000 deg2 of the southern sky with the Australian Square Kilometre Array Pathfinder. In anticipation of the full survey, we analyze pilot observations of low-band (800–1087 MHz), mid-band (1316–1439 MHz), and combined-band observations for an extragalactic field and a Galactic plane field (low-band only). Using the POSSUM processing pipeline, we produce prototype rotation measure (RM) catalogs that are filtered to construct prototype RM grids. We assess typical RM grid densities and RM uncertainties and their dependence on frequency, bandwidth, and Galactic latitude. We present a median filter method for separating foreground diffuse emission from background components and find that after application of the filter, 99.5% of the measured RMs of simulated sources are within 3σ of their true RM, with a typical loss of polarized intensity of 5% ± 5%. We find RM grid densities of 35.1, 30.6, 37.2, and 13.5 RMs per square degree and median uncertainties on RM measurements of 1.55, 12.82, 1.06, and 1.89 rad m−2 for the median-filtered low-band, mid-band, combined-band, and Galactic observations, respectively. We estimate that the full POSSUM survey will produce an RM catalog of ∼775,000 RMs with median-filtered low-band observations and ∼877,000 RMs with median-filtered combined-band observations. We construct a structure function from the Galactic RM catalog, which shows a break at 0.°7, corresponding to a physical scale of 12–24 pc for the nearest spiral arm.
Asteroseismological Analysis of the Non-Blazhko RRab Star EPIC 248846335 in the LAMOST–Kepler/K2 Project
Authors: Zong Peng , Fu Jian-Ning , Su Jie , Hu Xueying , Zhang Bo , Wang Jiaxin , Liu Gao-Chao , Meng Gang , Catanzaro Gianni , Frasca Antonio , Wang Haotian , Zong Weikai
Published: April 2024

We conduct an asteroseismological analysis on the non-Blazhko ab-type RR Lyrae star EPIC 248846335, employing the Radial Stellar Pulsations module of the Modules for Experiments in Stellar Astrophysics based on the set of stellar parameters. The atmospheric parameters T
eff = 6933 ± 70 K, log g = 3.35 ± 0.50, and [Fe/H] = −1.18 ± 0.14 are estimated from low-resolution spectra of LAMOST DR9. The luminosity L =

49.70

−
1.80

+
2.99

L
⊙ and mass M = 0.56 ± 0.07 M
⊙ are calculated, respectively, using the distance provided by Gaia and the metallicity estimated from the low-resolution spectra. The Fourier parameters of the light curves observed by K2 and radial velocity (RV) curves determined from the medium-resolution spectra of LAMOST DR10 are also calculated in this work. The period of the fundamental mode of the star and the residuals r of the Fourier parameters between the models and observations serve to select an optimal model, whose stellar parameters are T
eff = 6700 ± 220 K, log g = 2.70, [Fe/H] = −1.20 ± 0.2, M = 0.59 ± 0.05 M
⊙, and L = 56.0 ± 4.2 L
⊙. The projection factors are constrained as 1.20 ± 0.02 and 1.59 ± 0.13 by the blue- and red-arm observed velocities with their corresponding RV curves derived from the best-fit model, respectively. The precise determination of stellar parameters in ab-type RR Lyrae stars is crucial for understanding the physical processes that occur during pulsation and for providing a deeper understanding of their period–luminosity relationship.
Magnetic Flux in the Sun Emerges Unaffected by Supergranular-scale Surface Flows
Authors: Mani Prasad , Hanson Chris S. , Dhanpal Siddharth , Hanasoge Shravan , Das Srijan Bharati , Rempel Matthias
Published: April 2024

Magnetic flux emergence from the convection zone into the photosphere and beyond is a critical component of the behavior of large-scale solar magnetism. Flux rarely emerges amid field-free areas at the surface, but when it does, the interaction between the magnetism and plasma flows can be reliably explored. Prior ensemble studies have identified weak flows forming near emergence locations, but the low signal-to-noise ratio (S/N) required averaging over the entire data set, erasing information about variation across the sample. Here, we apply deep learning to achieve an improved S/N, enabling a case-by-case study. We find that these associated flows are dissimilar across instances of emergence and also occur frequently in the quiet convective background. Our analysis suggests the diminished influence of supergranular-scale convective flows and magnetic buoyancy on flux rise. Consistent with numerical evidence, we speculate that small-scale surface turbulence and/or deep convective processes play an outsized role in driving flux emergence.
PEARLS: NuSTAR and XMM-Newton Extragalactic Survey of the JWST North Ecliptic Pole Time-domain Field II
Authors: Zhao Xiurui , Civano Francesca , Willmer Christopher N. A. , Bonoli Silvia , Chen Chien-Ting , Creech Samantha , Dupke Renato , Fornasini Francesca M. , Jansen Rolf A. , Kikuta Satoshi , Koekemoer Anton M. , Laha Sibasish , Marchesi Stefano , O’Brien Rosalia , Silver Ross , Willner S. P. , Windhorst Rogier A. , Yan Haojing , Alcaniz Jailson , Benitez Narciso , Carneiro Saulo , Cenarro Javier , Cristóbal-Hornillos David , Ederoclite Alessandro , Hernán-Caballero Antonio , López-Sanjuan Carlos , Marín-Franch Antonio , Mendes de Oliveira Claudia , Moles Mariano , Sodré Laerte , Taylor Keith , Varela Jesús , Vázquez Ramió Héctor
Published: April 2024

We present the second NuSTAR and XMM-Newton extragalactic survey of the JWST north ecliptic pole (NEP) time-domain field (TDF). The first NuSTAR NEP-TDF survey had 681 ks total exposure time executed in NuSTAR cycle 5 in 2019 and 2020. This second survey, acquired from 2020 to 2022 in cycle 6, adds 880 ks of NuSTAR exposure time. The overall NuSTAR NEP-TDF survey is the most sensitive NuSTAR extragalactic survey to date, and a total of 60 sources were detected above the 95% reliability threshold. We constrain the hard X-ray number counts,

log
N

–

log
S

, down to 1.7 × 10−14 erg cm−2 s−1 at 8–24 keV and detect an excess of hard X-ray sources at the faint end. About 47% of the NuSTAR-detected sources are heavily obscured (N
H > 1023 cm−2), and

18

−
8

+
20

% of the NuSTAR-detected sources are Compton-thick (N
H > 1024 cm−2). These fractions are consistent with those measured in other NuSTAR surveys. Four sources presented >2σ variability in the 3 yr survey. In addition to NuSTAR, a total of 62 ks of XMM-Newton observations were taken during NuSTAR cycle 6. The XMM-Newton observations provide soft X-ray (0.5–10 keV) coverage in the same field and enable more robust identification of the visible and infrared counterparts of the NuSTAR-detected sources. A total of 286 soft X-ray sources were detected, out of which 214 XMM-Newton sources have secure counterparts from multiwavelength catalogs.
TESS Observations of Outbursts on Polars—Superflares
Authors: Wang 王 Qishan 琪善 , Fang 方 Xiaohui 小慧 , Qian 钱 Shengbang 声帮
Published: April 2024

Flare events are magnetic activities on the stellar surface, which can provide us with information about the accretion behavior and evolution of polars. In this paper, we search for flare events on polars from all the available 2 minute cadence TESS data through visual inspection, and identify six flare events on five flaring stars from 185 polars. All the flares have bolometric energies above 1034 erg, with a median of ∼1035 erg, so they are superflares. Among them, two flares are followed by a brightness enhancement, which may suggest an accretion burst on the white dwarf caused by a coronal mass ejection. A completeness analysis of the detections demonstrates that the flare activities on the low-mass red dwarfs of polars are very similar to those on M dwarfs, which indicates that the highly magnetic fields of the white dwarfs have no significant effect on the magnetic activities on polars. We estimate that another ∼20–30 polars include a magnetically active secondary star, and more intensive searching for flares on polars is encouraged in further work.
A Channel to Form Fast-spinning Black Hole–Neutron Star Binary Mergers as Multimessenger Sources. II. Accretion-induced Spin-up
Authors: Wang Zhen-Han-Tao , Hu Rui-Chong , Qin Ying , Zhu Jin-Ping , Zhang Bing , Yi Shuang-Xi , Tang Qin-Wen , Shu Xin-Wen , Lyu Fen , Liang En-Wei
Published: April 2024

In this work, we investigate an alternative channel for the formation of fast-spinning black hole–neutron star (BHNS) binaries, in which super-Eddington accretion is expected to occur in accreting BHs during the stable mass transfer phase within BH-stripped helium (BH–He-rich) star binary systems. We evolve intensive MESA grids of close-orbit BH–He-rich star systems to systematically explore the projected aligned spins of BHs in BHNS binaries, as well as the impact of different accretion limits on the tidal disruption probability and electromagnetic (EM) signature of BHNS mergers. Most of the BHs in BHNS mergers cannot be effectively spun up through accretion if the accretion rate is limited to

≲
10

M

̇

Edd

, where

M

̇

Edd

is the standard Eddington accretion limit. In order to reach high spins (e.g., χ
BH ≳ 0.5), the BHs are required to be born less massive (e.g., ≲3.0 M
⊙) in binary systems with initial periods of ≲0.2–0.3 days and accrete material at

∼
100

M

̇

Edd

. However, even under this high accretion limit, ≳6 M
⊙ BHs are typically challenging to significantly spin up and generate detectable associated EM signals. Our population simulations suggest that different accretion limits have a slight impact on the ratio of tidal disruption events. However, as the accretion limit increases, the EM counterparts from the cosmological BHNS population can become bright overall.
Utilising public sequence databases to investigate genetic diversity of stoneflies in Medvednica Nature Park
Authors: Kermek Dora , Pischiutta Nikola , Hlebec Dora , Sivec Ignac , Kučinić Mladen
Published: April 2024

In Medvednica Nature Park, near Croatia's capital Zagreb, urbanisation significantly impacts the fauna. Comprehensive field research has never been conducted in this area, despite the presence of diverse microhabitats and the discovery of several rare species previously unknown in the Croatian fauna. This study provides the Park with first insight into the genetic and morphological diversity of stoneflies, one of the most endangered groups of organisms. Phylogenetic reconstructions and species delineation methods revealed intraspecific haplotype variation in most species (e.g. Brachyptera seticornis, Isoperla grammatica and Leuctra braueri), except for Leuctra prima. Additionally, our study has identified isolated populations that merit further in-depth investigation concerning morphology, genetics and ecology.
Quantifying the impact of nitrogen levels on spring maize varieties (Zea mays L.) in Kanchanpur, Nepal
Authors: Bhatt Saurav , Ghimire Sudip
Published: April 2024

Maize has tremendous potential for increasing productivity, profitability, and sustainability in agriculture. A crucial obstacle to maximizing yield of the suitable maize variety with appropriate nitrogen (N) doses. In order to assess the impact of varying N levels on the growth and yield of spring maize varieties, a two-factorial study was conducted in the farmer’s field at Kanchanpur, Nepal. Conducted from February to July 2022, the experiment design was randomized complete block with two factors; where hybrid varieties Bioseed 9220 and Arun-2 were the first factors and four different levels of nitrogen (0, 60, 120, and 180 kg N ha-1) were the second factors. Results showed that 180 kg N ha-1and Bioseed 9220 treatment produced significantly higher plant height, kernel row-1, kernel row cob-1, cob plant-1, and thousand-grain weight as compared to other doses and Arun-2, respectively. Similarly, Bioseed 9220 and 180 kg N ha-1treatment had significantly longer days for tasseling and silking. The grain yield of Bioseed 9220 (5.48 t ha-1) was significantly greater than Arun-2 (4.15 t ha-1) and the N level of 180 kg ha-1had a higher yield (5.11 t ha-1) compared to 120 kg ha-1(4.8 t ha-1), 60 kg ha-1(4.78 t ha-1) and least in 0 kg ha-1(4.56 t ha-1). The result indicates that Bioseed 9220 performs better than Open Pollinated Variety (OPV) Arun-2 in growth and yield attributes. N enrichment also boosts yield and yield-attributing characteristics. Bioseed 9220 with 180 kg N ha-1should be prioritized among farmers to increase the productivity and yield of maize.
La vie de l’histoire
Authors: Angelini Andrea
Published: April 2024

Au cours du xix e siècle, les théories transformistes et l’évolutionnisme permettaient de penser d’une nouvelle manière l’historicité de la nature et de la vie, y compris celle de l’homme. Historisation de la nature et naturalisation de l’homme marchent ensemble, mais la forme attribuée à la temporalité naturelle et la place de l’homme dans l’histoire de la vie restent sujets à des conceptions fort différentes dans les champs scientifiques et philosophiques et continuent à être objet de discussion tout au long du xx e siècle. La question de l’articulation entre l’historicité biologique et anthropologique joue également un rôle décisif dans les œuvres de Friedrich Nietzsche et de Michel Foucault. Nous essayerons ici de contextualiser leurs réflexions à ce sujet, de montrer leurs relations et leurs spécificités, ainsi que leur actualité.
Foucault lecteur de Was ist Aufklärung ?
Authors: Suratteau Jean-François
Published: April 2024

Foucault débute le cours de 1983, l’avant-dernier de son enseignement au Collège de France, par la lecture de Qu’est-ce que les Lumières ? , texte auquel il confère le statut que Kant attribue à l’ Aufklärung , celui de Wahlspruch , à la fois blason, précepte et marque distinctive. On se demande comment le lecteur est engagé par la lecture qu’il expose aux auditeurs du cours. S’agit-il de se reconnaître l’obligé de ce que Kant envisage en termes de sortie, une redistribution du rapport du gouvernement de soi et du gouvernement des autres ? S’agit-il de s’approprier d’une manière inédite le mode kantien de l’attention à ce rapport en s’appliquant à un examen théorico-pratique qui sera à la hauteur de ce que l’actualité exige de nous ?
Cinquante ans après la révolution des Œillets
Authors: d’Oliveira Martins Guilherme
Published: April 2024

Dans la nuit du 25 avril 1974, de jeunes capitaines renversent la dictature salazariste. C’est le début d’une expérience révolutionnaire singulière, faite par des militaires porteurs d’un projet démocratique, soutenus par le réveil de la société civile. Guilherme d’Oliveira évoque les étapes qui, non sans tensions ni renoncements, ont conduit le Portugal de la révolution à la démocratie constitutionnelle.
Indonésie, la victoire de l’amnésie
Authors: Madinier Rémy
Published: April 2024

Élu président de la République indonésienne, Prabowo Subianto, ancien général au sombre bilan, a bénéficié de la dérive autoritaire de son prédécesseur et d’une mémoire falsifiée de l’histoire politique du pays.
Introduction
Authors: Bujon Anne-Lorraine , Spector Céline
Published: April 2024

L’invasion de l’Ukraine par la Russie constitue un moment de vérité pour l’Union européenne : est-elle en mesure d’agir en tant que puissance ? Peut-elle le faire sans trahir ses principes fondateurs ? En amont des élections européennes de juin 2024, ce dossier, coordonné par Anne-Lorraine Bujon et Céline Spector, prend acte de l’ascension de l’extrême droite et pose les bases d’un projet démocratique, social et écologique pour l’Europe.