bluuebunny/crossref_metadata_2025 huggingface dataset:
Performance Calculation and Analysis of Engine Cooling Fan Based on Bidirectional Fluid Structure Coupling
Authors: Guo Yi Ming , Jiang Xuefeng , Wang Xinling , Duan Yaolong , Shangguan Wen-Bin
Published: April 2024

When the automotive engine cooling fan is actually working, there is a process of interaction and coupling between the fluid and solid domains on the blades. In order to study the influence of the "fluid structure coupling" effect on the aerodynamic and structural performance of fans during operation, a fan performance calculation model was established with and without considering the fluid structure coupling effect of fans. We conducted aerodynamic performance tests on fans, tested the relationship between fan flow rate, static pressure, transmission efficiency and fan speed, and compared and analyzed the calculated fan performance. The aerodynamic performance and structural deformation of the fan were calculated under different flow rates, rotational speeds and environmental temperatures, with and without considering the coupling of fan blades and airflow. The calculation results were compared and analyzed. The calculation results indicate that: (1)The flow rate has a significant impact on the discrepancy in aerodynamic performance with and without FSI included. The larger the flow rate, the greater the error between the calculated and experimental aerodynamic performance values without considering the coupling of fan blades and airflow. (2) The effect of rotational speed on the coupling effect between fan blades and airflow is relatively small, as the deformation is mainly concentrated at the blade tip, with the same deformation direction at the leading and trailing edges and almost no deformation at the blade root and almost no change in attack angle. (3) The temperature has a small impact on the aerodynamic performance under the coupling effect of fan blades and airflow, but has a significant impact on structural deformation. (4) Under high temperature, the deformation of the blade and the stress variation of the support plate are significant, and the support plate may be damaged. The modeling and analysis methods in this article have a certain guiding role in CFD numerical calculation and fluid structure coupling analysis of fluid machinery.
Deflagration-Based Knock of Methanol SI Combustion and its Implications for Combustion Noise
Authors: Singh Eshan , Strickland Tyler , Abboud Rami , MacDonald James , Lee Sanguk , Lopez Pintor Dario
Published: April 2024

Methanol emerges as a compelling renewable fuel for decarbonizing engine applications due to a mature industry with high production capacity, existing distribution infrastructure, low carbon intensity and favorable cost. Methanol’s high flame speed and high autoignition resistance render it particularly well-suited for spark-ignition (SI) engines. Previous research showed a distinct phenomenon, known deflagration-based knock in methanol combustion, whereby knocking combustion was observed albeit without end-gas autoignition.

This work studies the implications of deflagration-based knock on noise emissions by investigating the knock intensity and combustion noise at knock-limited operation of methanol in a single-cylinder direct-injection SI engine operated at both stoichiometric and lean (λ = 2.0) conditions. Results are compared against observations from a premium-grade gasoline. Experiments show that methanol’s end-gas autoignition occurs at lean conditions, leading to the typical autoignition-based knock as that occurring with premium-grade gasoline. However, at stoichiometric conditions, knock-limited operation is achieved with deflagration-based knock. Noise of deflagration-based knock has lower variability than that of autoignition-based knock and it does not seem to be an issue at the engine speed tested experimentally in this paper (1400 rpm). However, computational fluid dynamic large eddy simulations show that deflagration-based knock may lead to high noise levels at 2000 rpm. Deflagration-based knock is insensitive to changing spark timings, so new knock mitigation strategies are required, such as adjusting the spark energy and/or adding dilution. Finally, this study shows that deflagration-based-knock may be directly impacted by the flame speed, occurring more frequently with faster-burning fuels or under conditions that elevate flame speeds, like rich-stoichiometric operation. The finding bears implications on renewable e-fuels, such as ethanol, methanol and hydrogen.
Classification and Characterization of Heat Release Rate Traces in Low Temperature Combustion for Optimal Engine Operation
Authors: Batool Sadaf , Naber Jeffrey , Shahbakhti Mahdi
Published: April 2024

Low temperature combustion (LTC) modes are among the advanced combustion technologies which offer thermal efficiencies comparable to conventional diesel combustion and produce ultra-low NOx and particulate matter (PM) emissions. However, combustion timing control, excessive pressure rise rate and high cyclic variations are the common challenges encountered by the LTC modes. These challenges can be addressed by developing model-based control framework for the LTC engine. In the current study, in-cylinder pressure data for dual-fuel LTC engine operation is analyzed for 636 different operating conditions and the heat release rate (HRR) traces are classified into three distinct classes based on their distinct shapes. These classes are named as Type-1, Type-2 and Type-3, respectively. To this end, HRR traces are analyzed for each class based on start of combustion (CA10), combustion phasing (CA50), burn duration (BD), maximum in-cylinder pressure (Pmax), location of peak pressure (θPmax), maximum in-cylinder temperature (Tmax), maximum pressure rise rate (MPRR) and coefficient of variation of indicated mean effective pressure (COVIMEP). 47.5% of the data points in Type-3 and 43.5% of the data points in Type-2 resulted in maximum in-cylinder temperature below 1500K which helps in the prevention of NOx formation. 90% of the data points in Type-1 showed COVIMEP below 5%. All the data points in Type-3 resulted in MPRR below 8 bar/CAD. 80.3% of the data points in Type-2 resulted in indicated thermal efficiency above 35%. This analysis is used as a basis to develop machine learning classification algorithms for model-based control and optimization of LTC engine.
Impact of Injection Valve Condition on Data-driven Prediction of Key Combustion Parameters Based on an Intelligent Diesel Fuel Injector for Large Engine Applications
Authors: Laubichler Christian , Kiesling Constantin , Warter Sven , Kober Martin , Wimmer Andreas , Coppo Marco , Negri Claudio , Laurenzano Danilo , Koegeler Hans-Michael , Kammerdiener Thomas
Published: April 2024

The advent of digitalization opens up new avenues for advances in large internal combustion engine technology. Key engine components are becoming "intelligent" through advanced instrumentation and data analytics. By generating value-added data, they provide deeper insight into processes related to the components. An intelligent common rail diesel fuel injection valve for large engine applications in combination with machine learning allows reliable prediction of key combustion parameters such as maximum cylinder pressure, combustion phasing and indicated mean effective pressure. However, fault-related changes to the injection valve also have to be considered. Based on experiments on a medium-speed four-stroke single-cylinder research engine with a displacement of approximately 15.7 liter, this study investigates the extent to which the intelligent injection valve can improve the reliability of combustion parameter predictions in the presence of injection valve faults. Injector fault is considered through two artificially aged injection valve variants (clogged nozzle hole and clogged feeding hole on the orifice plate). A comprehensive database obtained using a design of experiments approach is used to build machine learning models for combustion parameter prediction with and without the value-added data from the intelligent fuel injection valve. The comparison of the results reveals the impact of the faulty injection valve variants on the prediction accuracy. It can be found that the intelligent injection valve can improve the data-driven prediction of key combustion parameters when injection valve faults occur.
A study on estimation of stuck probability in off-road based on AI
Authors: Kang Junhan , byun Jijun , Jin Um , Huh Kunsoo , Yang Chanuk
Published: April 2024

After the COVID-19 pandemic, leisure activities and cultures have undergone significant transformations. Particularly, there has been an increased demand for outdoor camping. Consequently, the need for capabilities that allow vehicles to navigate not only paved roads but also unpaved and rugged terrains has arisen. In this study, we aim to address this demand by utilizing AI to introduce a 'Stuck Probability Estimation Algorithm' for vehicles on off-road.

To estimate the 'Stuck Probability' of a vehicle, a mathematical model representing vehicle behavior is essential. The behavior of off-road driving vehicles can be characterized in two main aspects: firstly, the harshness of the terrain (how uneven and rugged it is), and secondly, the extent of wheel slip affecting the vehicle's traction.

To achieve this, we constructed two AI learning models to quantify each aspect of vehicle behavior, and integrated them into a single computational meta-model to create the 'Stuck Score Calculation Model.' For this purpose, we used internal vehicle signals as inputs to the AI models.

We conducted 'Stuck Probability Estimation' evaluations while vehicles were driving on selected off-road terrains. The accuracy of the first model, the 'Road Depth Estimation Model,' reached 97.1%, and the second model, the 'Off-road Vehicle Slip Estimation Model,' achieved an MAE of 2.98%. The decision time result of 'Stuck Probability Estimation' using these two models is less than 13.9 seconds (5.5 seconds for sand, 13.9 seconds for pebble road).
Federated Learning Enable Training of Perception Model for Autonomous Driving
Authors: Liu Junkai , Yin Zhishuai , Nie Linzhen , Zhao Xiaobin
Published: April 2024

For intelligent vehicles, a robust perception system relies on training datasets with a large variety of scenes. The architecture of federated learning allows for efficient collaborative model iteration while ensuring privacy and security by leveraging data from multiple parties. However, the local data from different participants is often not independent and identically distributed, significantly affecting the training effectiveness of autonomous driving perception models in the context of federated learning. Unlike the well-studied issues of label distribution discrepancies in previous work, we focus on the challenges posed by scene heterogeneity in the context of federated learning for intelligent vehicles and the inadequacy of a single scene for training multi-task perception models. In this paper, we propose a federated learning-based perception model training system. Through visual explanation, we delve into the relationship between model convergence direction and the content of local data scenes. We also investigate the complex relationships between different perception tasks and the diverse scenarios encountered by vehicles. Subsequently, by utilizing significance detection, the system identifies scene distribution characteristics in different client-local datasets while strategically forming alliances among different vehicle clients. The system effectively balances the scene heterogeneity in different client data and mitigates the performance degradation caused by the inadequacy of a single scene to provide sufficient information for training multiple tasks simultaneously. In our experiments, the system not only outperforms the traditional federated averaging but also demonstrates performance improvements compared to other federated aggregation method.
Research on Automatic Removal of Outliers in Fuel Cell Test Data and Fitting Method of Polarization Curve
Authors: Qin Jiahang , Hou Yongping , Ma Liying
Published: April 2024

Fuel cell vehicles have always garnered a lot of attention in terms of energy utilization and environmental protection. In the analysis of fuel cell performance, there are usually some outliers present in the raw experimental data that can significantly affect the data analysis results. Therefore, data cleaning work is necessary to remove these outliers. The polarization curve is a crucial tool for describing the basic characteristics of fuel cells, typically described by semi-empirical formulas. The parameters in these semi-empirical formulas are fitted using the raw experimental data, so how to quickly and effectively automatically identify and remove data outliers is a crucial step in the process of fitting polarization curve parameters. This article explores data-cleaning methods based on the Local Outlier Factor (LOF) algorithm and the Isolation Forest algorithm to remove data outliers. For fuel cell experimental data, two algorithms are used to score all data points for outliers, and a reasonable threshold is set for outlier identification and removal. Then the parameters in the empirical formula of the polarization curve are fitted. The evaluation indicators adopt the coefficient of determination and root mean square error. The results show that after removing data outliers using two algorithms, the polarization curve has greatly improved in terms of fitting effects compared to the raw data. In addition, this article also compares and analyzes the outlier removal effects of the Isolation Forest algorithm and LOF algorithm and the two evaluation indicators. The results show that the LOF algorithm has higher accuracy and stability than the Isolation Forest algorithm in detecting outliers.
Documentos sobre Esperanza Lothringer obrantes en el IIMCV-UCA. Dos conferencias
Authors: Mansilla Silvina Luz
Published: April 2024

Se ofrece una aproximación a documentos relacionados con la pianista argentina Esperanza Lothringer, ingresados al Instituto de Investigación Musicológica “Carlos Vega” en 2015, a partir del legado de Juan Pedro Franze. Siguiendo investigaciones anteriores, se dilucidan nuevos aspectos de su actividad artística, así como sus intervenciones como conferencista. El objetivo principal es socializar la existencia de estas fuentes primarias y ofrecer una primera interpretación sobre la actividad teórica de la pianista y sus alcances pedagógicos, a partir de la transcripción de dos textos hasta ahora inéditos. Se colabora así con una línea de investigación desarrollada en la Universidad Nacional de las Artes, que promueve la búsqueda, puesta en valor y estudio de trayectorias artísticas y académicas de personas ligadas al Conservatorio Nacional de Música, institución próxima a alcanzar su primer centenario de existencia.
The Use Of Mediation In Industrial Dispute Resolution
Authors: Gayo Sabela
Published: April 2024

Administrative legislation and / or economic administrative law that “involves” criminal law in Indonesia is quite a lot. One example is Law No. 20 of 2016 on brands and Geographical Indications involved in the development of industry. Problems of criminal law in the field of administrative law and economic law, especially in the enforcement and protection of intellectual property rights have not shown action in line with the spirit of law formation. One form of violation of the law that is currently growing in Indonesia is duplication of copyright. But so far, efforts to provide legal protection for copyright holders seem inadequate. Even in the process of implementing law enforcement, it is not uncommon for copyright infringement cases to run aground in the middle of the road. Seeing the problems in the enforcement of economic criminal law, especially in the field of intellectual property rights, gave birth to an alternative discourse on the resolution of criminal disputes in the field of intellectual property rights, especially against violations of brand rights. How is the concept of industrial criminal punishment related to brand and geogtaphic indications, and whether mediation is the right choice in resolving industrial disputes.
La posición judicial frente a las antinomias entre leyes estatales y autonómicas
Authors: Hinojosa Martínez Eduardo
Published: April 2024

SUMARIO: 1. DELIMITACIÓN DE LA CUESTIÓN. II. VULNERACIÓN DE NORMAS BÁSICAS POR LEYES DE DESARROLLO POSTERIORES. III. LEYES BÁSICAS CONTRARIAS A DESARROLLOS ANTERIORES. PRECEDENTES. IV. ESTADO ACTUAL DE LA CUESTIÓN V. PROPUESTA
Instrucción penal, Suplicatorio, Comisiones Parlamentarias de Investigación
Authors: Carrasco López Ignacio
Published: April 2024

SUMARIO: I. ADVERTENCIAS. II. LA INMUNIDAD PARLAMENTARIA. III. INSTRUCCIÓN PENAL. IV. EL INICIO DE LA INVESTIGACIÓN. V. COMPETENCIAS PARA LA INSTRUCCIÓN. VI. MOMENTO ADECUADO PARA EL ENVÍO DE LA CAUSA AL TRIBUNAL SUPREMO. VII. CUMPLIMIENTO DEL ARTÍCULO 313 LECrim Y TUTELA JUDICIAL EFECTIVA.TRIBUNAL SUPREMO. VIII. ESPECIAL AFECTACIÓN AL DERECHO A LA TUTELA JUDICIAL EFECTIVA POR INEXISTENCIA DE DOBLE INSTANCIA. IX. MEDIDAS CAUTELARES. X. SUPLICATORIO.
Віддалені наслідки бойової травми у військовослужбовців щодо серцево-судинної системи та метаболічних порушень
Authors: Sydorova N. M. , Baranov A. Yu. , Kazmirchuk K. A. , Tsaralunha V. M.
Published: April 2024

Мета: визначити стан серцево-судинної системи (ССС) та метаболізму у комбатантів через 7 років після отриманої бойової травми.

Методи: проведено аналіз даних 40 військовослужбовців, чоловіки 95%, середній вік 41,5±1,7 років, середній час від отриманої бойової травми 7,2±0,2 роки. Оцінювали тип отриманої травми, вітальні ознаки, показники електрокардіографії, ехокардіографії, лабораторні дані з метою встановити особливості стану ССС та метаболічного статусу.

Результати: Найбільш поширеною серед обстежених була мінно-вибухова травма (77,5%) із закритою черепно-мозковою травмою (62,5%), часто поєднана з іншими видами бойової травми (у 37,5%). Комбатанти після бойової травми мали високу частоту куріння (70%), у 75% комбатантів після бойової травми встановлено посттравматичний стресовий розлад (ПТСР) або інші психологічні розлади. Після бойової травми, отриманої в середньому у віці 34,4±1,6 років, у 72,5% пацієнтів впродовж наступних 7 років почали з’являтись скарги, пов’язані із ССС, у 77,5% встановлено діагноз серцево-судинного захворювання. Найбільш частою встановленою кардіальною патологією комбатантів після бойової травми була недостатність мітрального та трикуспідального клапанів, другою за частотою патологією – артеріальна гіпертензія. За даними обстеження та частоти виявленої серцевої недостатності діагноз «дифузний кардіосклероз» не мав достатніх критеріїв для встановлення у 17,5% обстежених при відсутності випадків дилатації порожнин серця чи зниженої фракції викиду лівого шлуночка.

Висновки. У комбатантів після бойової травми варто ретельно контролювати наявність дисавтономії, масу тіла та рівень фізичних навантажень, чинник куріння та ПТСР, показники гемоглобіну, еритроцитів та гематокриту, ліпідограму, коригований інтервал QT, а при оцінці гемодинаміки слід звертати увагу на початкові ознаки ремоделювання серця. Додатково, слід визначитись із показниками регургітації на клапанах, які варто розглядати в межах діагнозу «недостатність клапану» та провести навчання серед практикуючих лікарів щодо критеріїв діагнозу «дифузний кардіосклероз».
A Study on Indian Real Estate Market and Investment in Real Estate
Authors: Amtul Wahab  , Iffath Unnisa Begum  , Aanchal Sirsat  , Aavula Chitra Bhanu  , Adsare Niketha  , Aedlol Priyanka
Published: April 2024

Robin Charbray -founder and CEO Of Dexterous work-space said has told in the “Year 2023.`”.At a time when India’s economy has expanded become fifth largest in the world, surpassing prestigious nation like the UK, it is encouraging to note that the efforts outlined in the budget have the potential to strengthen the real-estate sector both directly and indirectly .The budget would play a key role enhancing economic development through reforms to the tax code ,increased infrastructure spending ,and a focus on affordable housing. A greener, better, and more inclusive future has been paved by budget, 2023-24, and India can rise from fifth place to better positions in the foreseeable future, with strong support from the real estate sector. The real-estate sector is going to continue on it of long term growth continues rise in GDP per capital, larger disposable incomes, growing urbanization and most of all a larger focus on the world in the economy. The co-working sector in India is expected to cross 50 million sq. ft by the end of the year 2023 which would be a YOY 15% increase. managed office spaces shall continue growing at 10%in 2023. According to a recent JLL report, the net absorption of office spaces in 2022 across the top seven cities (Mumbai, Delhi, Bengali, Hyderabad, Chennai, Katakana& Rune) has been 38.25 million sq. ft, said Robbin chambray.
A Study On Consumer Purchase Behavior Towards Green Products
Authors: Mrs. Rajitha Pathange  , Mrs. Rajani Parcha  , Iffath Ara  , Irikilla Anusha  , Irram Fatima  , Jabeen Fathima
Published: April 2024

This research aims to investigate and analyze consumer purchase behavior towards green products, with a specific focus on understanding the factors influencing the adoption of sustainable and environmentally friendly choices. In the context of increasing environmental consciousness, consumers play a pivotal role in driving demand for products with reduced ecological impact. Employing a mixed-methods research design, including surveys and in-depth interviews, this study seeks to explore the intricacies of consumer decision-making processes and behaviors related to green products. Key objectives include assessing the level of awareness and understanding of green products, identifying the factors influencing consumer preferences, and examining the role of factors such as product labeling, brand trust, and perceived environmental impact. The study also aims to uncover any challenges or barriers that may hinder the widespread adoption of green products. The findings of this research are expected to contribute valuable insights for businesses, policymakers, and marketers, helping them better understand and cater to the preferences and motivations of consumers in the growing market for sustainable and eco-friendly products.
Primavera Silenciosa (1962) de Rachel Carson
Authors: De Almeuda Bianca Letícia
Published: April 2024

O propósito deste artigo é analisar o livro Primavera Silenciosa (1962), escrito pela bióloga norte-americana Rachel Carson. A obra teve como objetivo denunciar o uso indiscriminado de pesticidas químicos nos EUA e alcançou repercussão mundial. Abordamos aspectos de sua publicação e recepção nos EUA, discorremos sobre o conteúdo, estrutura, tese e argumentação e, por fim, apresentamos problematizações em torno do mito de que o livro teria fundado o movimento ambientalista.
Technology or Spiritual Motivation? The Determinant of Waqifs’ Behavior in Online Waqf in Indonesia
Authors: Syaiin Emmy Hamidiyah , Othman Yusuf Haji , Beik Irfan Syauqi
Published: April 2024

This research aims to investigate the factors influencing donors’ behavior in online waqf, utilizing the Unified Theory of Acceptance and Use of Technology 2 (UTAUT2) framework. The study focuses on four key variables: performance expectancy, effort expectancy, social influence, spiritual motivation as an alternative to hedonic motivation. Additionally, the moderating effect of age on these variables is examined. The sample included 205 Muslim from various cities in Indonesia. A structured questionnaire was used to collect data, and SEM PLS analysis was used to determine the significance of the variables. The findings show that waqifs’ behavior in the context of digital waqf is significantly influenced by performance expectancy, effort expectancy, social influence, and spiritual motivation. Spiritual motivation has the most significant impact on behavioral intention compared to all other variables. Furthermore, the analysis indicates that age has no significant moderating effect on the relationship between the aforementioned variables and donors’ digital waqf behavior. This suggests that the influence of performance expectancy, effort expectancy, social influence, and spiritual motivation is consistent across age groups. The findings provide valuable insights for nazhir looking to introduce digital waqf in the future, with the factors examined serving as a guideline for better planning and implementation of online waqf. There are limitations and suggestions for future research.
Defence Diplomacy and Security Cooperation in Southeast Asia
Authors: Suorsa Olli Pekka
Published: April 2024

Defence diplomacy is an increasingly important tool for strategic engagement used by states in Southeast Asia. This approach underpins simultaneous cooperation and competition in the contemporary Indo-Pacific region amid major power rivalries and growing activity in Southeast Asia and the South China Sea. The rise of China and the intensifying Sino–US competition has caught Southeast Asia at a geostrategic pivot where smaller states’ strategic autonomy is increasingly difficult to manage. To address uncertainty in contemporary international relations, Southeast Asian states tend to hedge omnidirectionally. This helps them to avoid entrapment, abandonment, and over-dependence on any one major power. Such an adaptive combination of bilateral, multilateral, and minilateral defence diplomacy and security cooperation allows these states to diversify their relations with several bigger powers, avoiding direct involvement of outside powers in Southeast Asian affairs while delaying having to choose sides between China and the United States. This is the first book-length coverage of defence diplomacy in Southeast Asia and an important update on previous studies. It bridges a gap in the literature by linking defence diplomacy to a broader theoretical framework of alignment behaviour, and offers much-needed look into smaller powers’ manoeuvring between major powers. This volume will be of interest to academics and policymakers alike, providing fresh perspectives and ideas for civilian and military decisionmakers and practitioners. More broadly, it will attract those seeking to better understand the military’s role in foreign and security policy.
Ethnographie ponctuelle
Authors: Radice Martha
Published: April 2024

Pop-up ethnography (ethnographie ponctuelle) is a collection of ethnographic methods that can be used to capture social life at the register of spaces and times that do not belong to any particular social group or milieu. Pop-up ethnography is especially useful for studying urban public spaces, as well as time-limited events such as festivals or artistic interventions.
Quantum graph theoretic encryption and dynamic key evolution in secure quantum communication networks
Authors: Verma Vivek Kumar , Saini Bhavna , Jain Tarun , Dadheech Pankaj
Published: April 2024

The dawn of the quantum era marks a pivotal moment in the evolution of digital communications, bringing forth both unparalleled potential and unprecedented challenges. This paper delves into the realm of Quantum Graph Theoretic Encryption and Dynamic Key Evolution, a frontier in the quest for impenetrable communication networks in the quantum computing age. Quantum computing, with its ability to perform complex calculations at speeds unattainable by traditional computers, offers a beacon of hope and a source of peril. The very principles that endow quantum computers with exceptional power also render traditional cryptographic methods vulnerable. This dichotomy underscores the urgency for innovative encryption techniques that can withstand the onslaught of quantum computational capabilities. When merged with the principles of quantum mechanics, graph theory opens a new dimension of cryptographic possibilities. However, the dynamic nature of digital communications necessitates more than just robust encryption; it requires agility. This is where the concept of Dynamic Key Evolution comes into play. This paper is structured to guide the reader through this novel integration of quantum mechanics, graph theory, and dynamic cryptography. We begin by laying a foundational understanding of quantum computing, followed by an exploration of graph theory in the context of encryption. We then introduce our proposed method of Quantum Graph Theoretic Encryption, highlighting its advantages and potential applications. Subsequently, we delve into the concept of Dynamic Key Evolution, illustrating its significance in maintaining the integrity of quantum encryption in a rapidly changing digital landscape.
Privacy-preserving cryptographic solutions for medical image protection : The secure force algorithm and intelligent encryption systems
Authors: Singh Kiran Deep , Singh Prabh Deep , Saini G. L. , Panwar Deepak
Published: April 2024

Privacy-preserving must comply with regulatory requirements, safeguard patient privacy, secure data integrity, enable evolving technologies, and guarantee moral and reliable healthcare practices for healthcare applications. By adopting these measures, the healthcare industry may effectively harness the advantages offered by contemporary technology while simultaneously ensuring the protection of patient confidentiality. In this paper, a Secure Force (SF) Encryption Algorithm is modified and improved to guarantee data confidentiality, integrity, and privacy for healthcare applications. Furthermore, SF is also integrated into Intelligent Encryption Systems to augment the protection and confidentiality of confidential patient information. A thorough examination of the algorithm’s efficacy is performed using MATLAB regarding computational efficiency, security, and influence on data entropy. Results demonstrate the algorithm’s ability to preserve patient anonymity, protect sensitive data, and augment data security. Addressing these vital aspects, the research contributes to the ongoing effort to secure medical data in a rapidly evolving healthcare landscape.
Mediating Effect of Access to Electronic Payment System on Currency Redesign Policy and SMEs Performance in Northeast-Nigeria
Authors: Umar Abdullahi , Na-Allah Shehu
Published: April 2024

This paper investigated the mediating role of access to electronic payment system (APS) on the relationship between currency redesign policy (CRP) and the performance of SMEs (PERF) in selected states (Adamawa, Bauchi, Gombe, and Yobe) in north-eastern Nigeria. The study used quantitative research approach and a multi-stage sampling technique was used to generate 300 responses using a research questionnaire. The partial least square structural equation modeling (PLS-SEM) technique was used to analyze data while the research model was examined using the disjointed two-stages approach. The study found a positive and significant mediating effect between CRP and PERF through APS. Equally, the direct paths were all found to be positive and significantly related. Meaning that not only does CRP affect PERF directly, but it also has an indirect effect on PERF through APS. This provided support for linking CRP and PERF through APS, and CRP and PERF, which doubles for validating the research model on the reflective-formative basis. Therefore, businesses are encouraged to utilize the usefulness of APS for doing transactions, which will double for achieving better PERF under the current CRP regime. This will have implication as the government is reintroducing the CRP as one of the measures of addressing inflation in Nigeria. On this note, the study concluded that APS is the most crucial factor in the implementation of CRP. Although, this cannot be generalized due to the concentration of the study in one region of the country, but future studies are encouraged to extend the scope of research to establish a basis of generalization.
Liberdade de expressão religiosa e a jurisprudência do Supremo Tribunal Federal
Authors: Papaléo Alberto , Alencar Maria Izaura Furtado de
Published: April 2024

O presente artigo tem como principal objetivo realizar uma discussão teórica acerca da defesa do Estado Laico brasileiro a partir da análise dos limites da liberdade de expressão religiosa. A hipótese central é a de que há uma confusão entre a defesa do Estado Laico e a perspectiva Laicista de Estado que faz com que, por inúmeras vezes, argumentos religiosos sejam tolhidos e restringidos indevidamente por parte da tensão entre uma pluralidade religiosa de atores sociais. Pretende-se contribuir, para desmistificação desta celeuma jurídica, com uma revisão bibliográfica e jurispru    dencial com foco nas decisões do Supremo Tribunal Federal
Água, energia e terra para a vida
Authors: Maciel Taiane Gomes , Calgaro Cleide
Published: April 2024

A pesquisa investiga a luta dos atingidos por barragens no Brasil, utilizando-se o método de abordagem dedutivo, se inicia com uma breve contextualização do Movimento dos Atingidos por Barragens no Brasil, destacando seus propósitos reivindicatórios, políticos, populares e ambientais, seus principais objetivos, ciclos históricos, reconfigurações da luta ao longo do tempo. Além de analisar as problemáticas na definição de quem são os atingidos por barragens e os reflexos nesse problema conceitual na justiça social dos que têm seus direitos atingidos pelo setor energético, bem como os impactos da desterritorialização na vida dos atingidos por barragens, que afetam suas saúdes mentais, físicas, além de trazer problemas sociais, culturais, perda de lembranças afetivas e até mesmo históricas, que não podem ser valoradas economicamente. Observa os grandes impactos que os desastres de Mariana e Brumadinho trouxeram a população, que ainda sofre, sem resultado efetivo, tudo pela prevalência dos interesses econômicos sobre os demais. Também reflete a insuficiência das políticas públicas existentes voltadas para atingidos por barragens, levando em consideração as transformações sofridas ao longo do tempo, não contemplando as particularidades socioculturais e econômicas dos atingidos por barragens no nosso país.
Factors Affecting Adoption of Climate-smart Agriculture Practices: Evidence from Uttar Pradesh, India
Authors: Jatav Surendra Singh
Published: April 2024

The study examined the determinants of climate-smart agriculture (CSA) practices in Uttar Pradesh. The systematically collected data of 480 sampled farmers from two regions of Uttar Pradesh, namely Central and Bundelkhand, was analysed using the binary logistic regression model. A field survey was conducted in August and September 2022. Farmers belonging to the Lucknow district were having relatively higher adoption rates of CSA practices. Entrepreneurial orientation (EO), consisting of risk-taking, innovativeness, and pro-activeness, was a significant factor influencing farmers’ adoption of CSA techniques. The findings show that male farmers are more inclined to use irrigation, certified seed, crop rotation, and soil testing. Education is linked to the acceptance of certified seed and soil testing, which necessitates financial commitment from farmers. Farmers, who have improved their irrigation facilities their income increased by 11.50 per cent, while those who had tested soil before plantation, the income increased by 54.76 per cent. Therefore, research indicates that entrepreneurship training and education courses for farmers should be customised to aspects of entrepreneurial orientation, such as risk-taking, innovativeness, and proactiveness.
Factors Influencing ICT Accessibility among the Farming Community of Odisha
Authors: Satapathy Guru Prasad , Das Sarbani , Tripathy Maitreyee
Published: April 2024

In the dynamic agrarian landscape, Information and Communication Technologies (ICTs) herald a transformative era for agricultural services, providing a realistic and efficient platform essential for adapting to constant change and optimizing agricultural productivity. A study was conducted in the year 2023 to delineate the accessibility of ICTs in two purposively selected districts of Odisha, having the highest numbers of farmers using ICTs i.e. Khurda and Bargarh, constituting randomly selected 200 respondents. The study categorizes accessibility of ICTs among farmers into high (30%), medium (41.5%), and low (28.5%) levels. The significant predictors were ICT accessibility, with educational qualification (b = 0.133, p < 0.01), annual income (b = 0.068, p < 0.01), social participation (b = 0.0341, p < 0.01), and media exposure (b = 0.478, p < 0.01) exhibiting positive regression coefficients. Conversely, age (b = -0.888, p < 0.01) demonstrated a negative association with ICT accessibility. By prioritizing equitable access to resources and tailored interventions, policymakers and development practitioners can contribute to inclusive agricultural development and digital empowerment in Odisha, thereby fostering sustainable growth and resilience in the agricultural sector.
Electric Vehicles for Smart Village
Authors: Rathod Pinal Sureshbhai  , Suvera Kajal Amrutbhai  , Sohil Mahammedbhai Luhar  , Sohil Mahammedbhai Luhar  , Prajapati Kaushikkumar Vinodbhai
Published: April 2024

Today transport accounts for about 60 % of total world oil consumption. This global problem of Energy for propulsion motivates the automotive industry to turn to the electric drive. All major automobile manufacturers attentions are shifted to electrically propelled battery-operated electric vehicles (BEV). Improve the existing power system efficiency, alternate fuels, new materials or alternate power systems like electric vehicles. EV is a road vehicle based on modern electric propulsion consisting of electric machines, power electronic converters, electric energy sources and storage devices, and electronic controllers; EV is a broad concept, including BEV, HEV, FCEV, etc
Secondary aortoenteric fistula: a narrative review of the view of the surgeon
Authors: Mulita Francesk , Leivaditis Vasileios , Verras Georgios-Ioannis , Pitros Christos , Dimopoulos Platon , Katsakiori Paraskevi F. , Dafnomili Danai , Tchabashvili Levan , Tasios Konstantinos , Kehagias Dimitrios , Antzoulas Andreas , Papadoulas Spyros , Koletsis Efstratios
Published: April 2024

Aortoenteric fistula (AEF) is defined as the abnormal communication between the aorta and the gastrointestinal tract. AEFs are divided into primary and secondary usually after abdominal aortic aneurysm (AAA) recovery and are a rare but quite dangerous cause of gastrointestinal bleeding that the general surgeon may face during his/her career. Secondary AEF was first described in 1953 to a 44-year-old woman 3 months after an AAA operation. This review presents the role of the surgeon in the management of secondary aortoenteric fistulas. AEFs are a rare but fatal gastrointestinal bleeding cause that the general surgeon may be asked to manage. Diagnosis requires the combination of strong clinical suspicion and the presence of a history of AAA surgery. Although a vascular surgery case, general surgeons play a role in choosing the technique of restoring the intestinal tract, which seems to be significantly related to subsequent morbidity and mortality.
AUTOMEDICAÇÃO E O USO INDISCRIMINADO DE PSICOTRÓPICOS ENTRE JOVENS
Authors: Silva Larissa Bezerra da , Santos Charlane Bezerra da S. dos , Mesquita Ana Oclenidia Dantas , Jesus Robson de , Barbosa Anderson dos Santos
Published: April 2024

Introdução: O consumo de medicamentos para tratar doenças é fundamental na qualidade de vida dos seres humanos. Consequentemente, destaca-se que o uso indiscriminado pode oferecer riscos à saúde e aos seus usuários. Objetivo: Entender os riscos relacionados à automedicação, assim como identificar os motivos que levam ao consumo excessivo de psicotrópicos, definir os efeitos colaterais associados ao consumo indiscriminado e descrever medidas não farmacológicas que contribuem para redução do consumo indiscriminado de psicotrópicos. Metodologia: Foi realizada uma revisão narrativa por meio da coleta de informações esclarecendo sobre os impactos que a automedicação e o uso incorreto podem ocasionar a saúde, assim como, a importância de esclarecer os fatores de riscos sobre o tema, buscando captar os aspetos e práticas relacionados à utilização de medicamentos psicotrópicos pela sociedade atual especificamente entre o período de 2016 a 2023. Resultados: Foram escolhidos 30 artigos com relevância ao tema específico. Sendo identificados após transcrição dos narradores, 21 artigos dos idiomas português e inglês. Sendo excluídos 9 artigos que não se adequavam ao objetivo específico da busca. Conclusão: as estatísticas mostram que, a ingestão de medicamentos pelos jovens tem crescido bastante, sobretudo, quando se trata de uso indiscriminado de ansiolíticos, ocasiona uma inquietação máxima com o fato da dependência. Entre eles, os benzodiazepínicos (BDZ) são os mais utilizados em todo o mundo a sua ingestão dobra a cada cinco anos.
Zusatzeinkommen für Landwirte
Authors: Brust Martin
Published: April 2024

Gersfeld/Rhön. Einfach nur seine Flächen bestellen und ernten oder sich um das Vieh kümmern: das ist für sehr viele landwirtschaftliche Betriebe schon längst nicht mehr ausreichend. Fast die Hälfte von ihnen steht auf einem zweiten Standbein. Dafür gibt es gute Gründe.
The impact of surgical resection on prognosis in gastric neuroendocrine tumors
Authors: Demir Halit Batuhan , Fırat Özgür
Published: April 2024

Aims: This study aimed to investigate the pathological factors influencing prognosis in patients undergoing surgical resection for GNETs, in the context of the World Health Organization 2010 staging system.
Methods: This retrospective study included 27 patients who underwent surgical resection for GNETs diagnosis between 2001 and 2015. Patients were clinically categorized into four types based on gastric NET characteristics: type 1 tumors, which are typified by hypergastrinemia and develop on a background of atrophic gastritis; type 2 tumors, which are related with gastrinomas; type 3 tumors, which have low serum gastrin levels and no underlying mucosal pathology, and type 4, which are characterized by neuroendocrine carcinoma. Additionally, all patients were classified according to the TNM staging system.
Results: The median age of the patients was 56 years (range: 33-81), and most patients were identified as type I (55.6%), with subsequent groups being type IV (25.9%) and type III (18.5%). The majority of type I patients were classified as stage I, while the majority of type III patients were in stage IIA, and most type IV patients were in stage IIIB. Type III and type IV groups exhibited a higher rate of lymph node metastasis compared to type I group (Type I: 13.3% vs. Type II: 80.0% vs. Type IV: 57.1%, p < 0.001). The mortality rate was higher in the Type IV group compared to other groups (Type I: 0% vs. Type II: 20% vs. Type IV: 57.1%, p < 0.001). The Ki-67 levels were higher in patients with lymph node metastasis than in those without.
Conclusion: Type III and IV GNETs are at a higher risk of lymph node metastasis and mortality. The Ki-67 value assessed through preoperative endoscopic biopsy may serve as a guide for deciding on the necessity of lymph node dissection.
Sleep Quality among Medical Students of a Portuguese University
Authors: Ferreira Rita , Brás João , Fialho Joana , Peixoto Cristina
Published: April 2024

Introduction: Sleep is a complex physiological process shared by most living beings. Sleep disorders have been increasing exponentially. University students, particularly medical students, are especially vulnerable to this problem. However, the existing literature on the subject is scarce, especially in Portugal.
The aim of this study is to assess the quality of sleep among medical students attending the University of Beira Interior, Covilhã, Portugal and to analyse the differences and existing relationships according to age, gender, cohabitation status and academic year.

Method: This is a cross-sectional study in which the students completed the Pittsburgh Sleep Quality Index (PSQI) that was previously validated for the Portuguese population. The values obtained for each component of the PSQI were initially analysed for the total sample, and then coupled with sociodemographic variables, in order to obtain statistically significant relationships.

Results: Two hundred and ninety-six students completed the questionnaire. A percentage of 62.2% of them stated that their sleep was good; 42.4% scored 2 in the component 2; 50% admitted that they usually sleep between 6 and 7 hours; 73.9% of the participants showed adequate sleep efficiency; 85.5% reported little or no sleep disturbance; 83.8% reported never having used sleep medications; and 60.8% mentioned little or no daytime disturbance. As for global PSQI score, 72.6% of the students’ scores were greater than 5, which indicates poor sleep quality. 74.7% of the female participants and 67.7% of the male respondents showed poor sleep quality. 91.3% of the students who were living alone at the time also revealed poor sleep quality. Of the 1st year students, 82.4% reported poor sleep quality, as did 77.5% of the 2nd year students, 72.1% of the 3rd year students, 77.8% of the 4th year students, 65.8% of the 5th year students, and 71.4% of those attending the 6th year.

Conclusion: Generally speaking, the students who took part in this study showed a poor sleep quality, with a PSQI score superior to 5. However, the ratings in each of the components are not so negative. Most of the participants rated their sleep as good or very good, almost half of the participants reported sleeping more than 7 hours and the majority had a sleep efficiency of more than 85%. Similarly, 83.8% had never used sleep medication. Since this is not a robust result, it is imperative to carry out more studies that unequivocally prove it. Moreover, such studies will also be essential to identify situations in which therapeutic intervention will improve such parameters.
Dexmedetomidine as an Emerging Treatment of Agitation in Psychiatric Patients: A Narrative Review
Authors: Magueta Sabrina , Costa Ana , Simões Gisela , Alcafache João , Garrido Paula
Published: April 2024

Acute agitation occurs in a variety of medical and psychiatric conditions and is the clinical presentation in a significant percentage of urgent psychiatric episodes, requiring prompt and effective intervention. Traditionally, agitation was managed in psychiatric wards using physical restraint. With the advent of tranquilizing neuroleptics, such as chlorpromazine, the pharmacological management of these conditions became possible. Acute agitation, although a potential result of most psychiatric disorders, is often associated with psychotic conditions, mood disorders and neurodegenerative disorders. The authors propose to explore dexmedetomidine as a therapeutic option in states of acute agitation in psychiatric patients in which traditional drugs are not effective. The authors based the work on a non-systematic review of the literature. Keywords used included: dexmedetomidine, acute agitation, rapid tranquilisation, restraint, sedation, psychiatric population and psychiatric disorders. Recently, a significant step forward in methods of treating acute agitation has been achieved through the use of dexmedetomidine in psychiatric patients. It is a selective α2‐receptor agonist being approved for short‐term sedation with the benefit of not having excessive sedation, thus allowing a concomitant psychotherapeutic approach. This proves to be a promising treatment option for those with acute agitation. The amount of studies available on its usefulness in psychiatric mental illness are still scarce. The interventional recommendations in the literature for agitation were developed based on research data, theoretical considerations and clinical experience, however, studies that provide definitive data are needed. It is imperative that the investigation of episodes of acute agitation and their restraint evolve, in order to protect these patients from the consequences of this behaviour and its treatment. Exploring the potential of dexmedetomidine as a tool in the mental health professional’s kit is well deserved as there are few alternatives that reassure the highly agitated patient without excessive sedation.