bluuebunny/crossref_metadata_2025 huggingface dataset:
Studying the Effect of the Trailing Edge Blowing of NACA0018 Airfoil on the Aerodynamic Performance
Authors:   University of Basrah, Alsahlani Ahmad , Al-Saad Mohammed ,   University of Basrah, Radhi Zainab ,   University of Basrah
Published: August 2024

The flow control around the airfoil is widely investigated and utilized in the aircraft industry. The benefit of reducing the separation effect and its impact on the aerodynamic performance made the effort on this area is more desirable as this will impact to enhance the flight control as well as to reduce the fuel consumption during the flight. In this paper, the flow control using leading-edge blowing technique has been conducted for NACA0018 airfoil at Reynolds number 6.85 and 13.7 × 105. A CFD analysis has been conducted to examine several flight parameters and blowing speed to explore the benefit of using the blowing in this wing section. The results indicate that the lift coefficient can be enhanced to be increased by 4-6% as compared with no blowing case. However, this increase ratio is affected by the operational Reynolds number and blowing ratio. Higher speed means less benefit from blowing within the limit of blowing ratio of 1. The benefit of using the blowing could come with an increase in the drag at some angle of attack. It is noticed that the blowing technique can generate positive pitching moment at lower angle of attack and can reduce the negative moment when the separation is happening at higher angle of attack. Also, the lesson learned in this paper is that the blowing benefit is more pronounced when the flight is under low Reynolds number environment.
Mechanical Vibration Reduction of a Nonlinear Half-Car Model using Integral-Proportional Derivative (I-PD) Controller
Authors:   Department of Seawater, Basrah Oil Company, Matrood Mustafa , Nassar Ameen ,   University of Basrah
Published: August 2024

Vehicles usually consist of several essential systems. The performance of the vehicle is evaluated through the efficiency of these systems to perform their duties. The suspension system is one of these systems dedicated to absorbing shocks arising from vehicles passing over road bumps, thus reducing vibrations and achieving passenger comfort while driving. This paper presents a study on enhancing ride comfort in a nonlinear half-car model using a modified Proportional-Integral-Derivative (PID) controller. In this study a half-car model is developed considering the nonlinearities in the suspension system components. A nonlinear half-car model was adopted to increase accuracy and make the overall system closer to reality. Instead of the feed-forward conventional PID controller gains, the proposed controller gains are formed by putting the proportional and derivative gains in the feedback path while keeping the integral gain in the feed-forward path to act as an I-PD controller. The proposed controller is integrated into the model to deal with these nonlinearities effectively and to achieve the optimal performance of the vehicle body. The overall system has been developed and simulated in the Matlab Simulink environment to show the dynamic response. Simulation results demonstrate the effectiveness of the I-PD controller in improving the ride comfort and handling stability of the nonlinear half-car model by reducing body acceleration and suspension deflection. A comparison with other study has been conducted to verify the effectiveness of the proposed controller.
Simulation of Flow Around Circular Cylinders for Complex von Kármán Vortex Street Phenomenon Using SIMPLE, SIMPLEC and PISO
Authors:   University of Basrah, Hadi Ali , Mohammed Rafid ,   University of Basrah, Jawad Qahtan ,   University of Basrah, Kheioon Imad ,   University of Basrah
Published: August 2024

Van Kármán vortex street is considered an important phenomenon that accompanies fluid flow, especially when exposed to a certain barrier, as periodic vortexes occur on both sides of the body that rotate in two opposite directions. This phenomenon occurs in the atmosphere around mountains, oceans, seas, and islands. Also, this phenomenon makes it possible to induce a fluid flow around a specific body present in the flow path. In this study, a model for fluid flow around a cylinder of a certain diameter was taken, where the flow near the boundary layers of the cylinder surface moves slower than near the free stream. In addition, the pressure distribution was studied, and it was observed that there is a pressure gradient due to the difference in momentum at the surface of the cylinder in distant areas due to friction. The study area was divided into fine meshes with Fluent software, especially in the irregular areas. The simulation was implemented for Reynolds numbers Re = 100 and Re = 1500 for incompressible flows. Consequently, the equations that do not depend on pressure are difficult to solve. Therefore, methods linking pressure and velocity were adopted, where the pressure-velocity coupling simple method was used. The first-order forward difference scheme was adopted in representing the differential equations as a function of time when performing the simulation. From the steady state and upwards to Reynolds number Re = 100, it was observed that a twain of vortices appeared on the body at a certain speed range. When the state was changed from the stable state to the transitional state, the results changed, as the flow became asymmetric and unsteady due to vortex shedding phenomena, which led to the generation of vortexes in different ways. The U-Velocity curve was studied for two different cases, and the results showed a large discrepancy between the first order and the second order, where the second order had better behavior but required great effort to reach accurate results. Also, pressure-velocity was studied to satisfy mass conservation, and numerical techniques were used to compute the equations of Navier-Stokes in CFD, such as SIMPLEC, PISO, and SIMPLE. An acceptable convergence was not reached with the PISO; therefore, the SIMPLE method was adopted. The pressure gradient was drawn around the cylinder, where it was observed that the pressure was greatest at the front of the cylinder and its lowest value at the end.
Design and Implementation of an Upper Limb Prosthetic Hand Using a Pressure Sensor
Authors:   University of Kerbala, Al-Khazzar Ahmed , Hussain Jabbar ,   University of Kerbala, Raheema Mithaq ,   University of Kerbala
Published: August 2024

Smart prostheses hands have seen vast advancement in recent years. Amputees with upper hand loss have better access to intelligent prostheses that help them with their daily life activities. Smart prostheses however are still in development and have a few disadvantages, such as being expensive, complex, require training and being error prone in some cases. In this paper a simple, cost effective, practical upper limb prosthetic device is proposed that uses pressure sensors to acquire the action intent from the amputees. The pressure sensor serves as input signal to the Control Unit (CU). Using a selector keyboard, the amputee can choose between five predefined movements. The advantages of the proposed system compared to other prostheses using EMG, EEG, Voice is design simplicity and cost. The approximate cost of the proposed prosthetic hand is less than 200$. In addition, some of the complexities and error prone properties of the other alternatives are avoided and less probability of use fatigue is achieved.
S-Box Design Utilizing 3D Chaotic Maps for Cryptographic Application
Authors:   University of Technology, Namuq Jenan
Published: August 2024

In the realm of cryptography, the Substitution-box (S-box) is a critical component for enhancing the security of encryption algorithms. The inherent characteristics of Chaos, such as sensitivity to beginning conditions and unpredictability, make it a highly suitable choice for encryption applications. In this paper, proposed a method for generating S-Boxes using 3D chaotic maps algorithms including (Cat map, Henon map, Sine map, and Cosine map). The primary focus is on enhancing the security and efficiency of cryptographic systems by leveraging the inherent complexity and unpredictability of chaotic maps. The design methodology focuses on achieving high non-linearity, optimal avalanche effect, and Strict Avalanche Criterion (SAC), ensuring that minor changes in plaintext result in significant alterations in the ciphertext. Our study presents a detailed analysis of the generated S-Boxes, demonstrating their robustness against common cryptographic attacks. Key findings include significant improvements in nonlinearity, differential uniformity, and bijectivity compared to traditional methods. The test findings and performance analysis indicate that our proposed S-Box exhibits much lower values of Linear Probability (LP) and Differential Probability (DP), while maintaining a suitable average value of nonlinearity. Additionally, discussed the broader implications of our findings, emphasizing how the proposed method can be employed to produce high-quality analytical results that enhance the security measures of cryptographic applications. This work adds valuable context to existing research and highlights the potential for our model to outperform conventional S-Box generation techniques.
Isomers and tautomers of aminonitroethylenes – A DFT study
Authors: Türker Lemi
Published: August 2024

Aminonitroethylene isomers and their 1,3- and 1,5-proton tautomers are considered within the constraints of density functional theory at the level of B3LYP/6-311++G(d,p). Aminonitroethylene is a part of the well known explosive FOX-7 which is characterized with a pull-push type resonance. All the structures considered possess thermodynamically exothermic heat of formation values are, electronically stable, and have favorable Gibbs’ free energy of formation values at the standard states. Various quantum chemical properties, including IR and UV-VIS spectra, the HOMO and LUMO energies etc., have been obtained and discussed.
Modeling Data with Measurement Errors but without Predefined Metrics: Fact versus Fallacy
Authors: Yuan Ke-Hai , Zhang Zhiyong
Published: August 2024

Data in social and behavioral sciences typically contain measurement errors and also do not have predefined metrics. Structural equation modeling (SEM) is commonly used to analyze such data. This article discuss issues in latent-variable modeling as compared to regression analysis with composite-scores. Via logical reasoning and analytical results as well as the analyses of two real datasets, several misconceptions related to bias and accuracy of parameter estimates, standardization of variables, and result interpretation are clarified. The results are expected to facilitate better understanding of the strength and limitations of SEM and regression analysis with weighted composites, and to advance social and behavioral data science.
A BIBLIOMETRIC ANALYSIS OF DAFFODIL INTERNATIONAL UNIVERSITY JOURNAL OF SCIENCE AND TECHNOLOGY:
Authors: Md. Milan Khan
Published: August 2024

The study presents a Bibliometric analysis on “Daffodil International University Journal of Science and Technology (DIUJST)”. The study has been conducted on 142 articles published in the DIU Journal of Science and Technology during the period 2006-2012. A good number of articles were found to cover the field of Computer Science and Engineering. Most of the articles are written by Bangladeshi author(s). The authors who have published the maximum number of articles and research papers distributions on different criterion have been identified. The important foreign and Bangladeshi articles having maximum number of citations have also been observed.
STRENGTHENING CHILDREN PROTECTION SYSTEM FOR REDRESSING DOMESTIC EMOTIONAL ABUSE OF CHILDREN: BANGLADESH PERSPECTIVE
Authors: Mirza Farzana Iqbal Chowdhury
Published: August 2024

Children abuse is a threat to the development of children. Emotional abuse is such a classification of children abuse which kills children’s mind silently but deeply. Although the government and non-governmental organizations are taking many steps to prevent other kinds of children abuse such as physical abuse or sexual abuse, but due to silent killing nature of emotional abuse it is quite unaddressed and un-redressed by them. In this paper I tried to discuss the aspect of emotional abuse elaborately and its impact on children’s psychology. A structured questionnaire survey was conducted to examine the level of emotional abuse among the respondents. The field survey shows that families are not conscious about their treatment of children. So my concentration was to focus on the life-long impacts of the emotional abuse on children and to recommend a strengthened children protection system including community people to prevent and protect children from emotional abuse.
TRANSFORMING JOURNALISM AND COMMUNICATION EDUCATION:
Authors: Md. Golam Rahman
Published: August 2024

The study focuses on Journalism and Communication education in developing countries that indicates a compromise and balance of traditional outlay and modern technology but resulted to a mismatch of ‘slow march to fast music’. Expansion of media is not commensurate with the population in both the countries studied. It has been observed that with thriving democracy, the growth of mass media is reflective with the growth of media education in Bangladesh, whereas the growth of media and the state of democracy both are in formative stage in Papua New Guinea (PNG). It was examined that media in Bangladesh have been contributing potentially to create pluralistic democratic values to a densely populated country. Newspapers and TV channels draw communication graduates from public and private universities. The study envisaged that Papua New Guinea, an independent country in 1975, and world’s most diversified nation with highest number of languages, 823 languages among 6.5 million people, craving for a working democracy with meager state of media in the country. On the other hand, alternative media education as conceptualized as ‘Civic Journalism’ got a trial in one of the public universities. It has been focused to rural areas and on the issues like human rights, good governance, gender, democracy, rule of law and justice, and environment.
TRENDS OF TV NEWS COVERAGE IN BANGLADESH
Authors: Sheikh Mohammad Shafiul Islam , Syed Mahfujul Haque Marjan
Published: August 2024

The media booming especially the rise of satellite television channels is a significant phenomenon in the landscape of Bangladesh media which was initiated after the fall of autocratic regime in 1990. At present, twenty four satellite TV channels are in operation under the corporate ownership. These satellite channels are presenting hour-round news and views on different events and affairs. The state-owned BTV was the sole medium to cover and disseminate news, information and entertainment to the country-wide audience till 1999. Within a period of one and a half decade, ‘the media boom’ that Bangladesh is experiencing is not noticed in many other countries of the South-Asian region. In spite of this significant change in terms of quantity and ownership pattern, there still lacks a comprehensive broadcast policy to guide day-to-day operations of the channels. The article, in this backdrop, presents trend of the ever-growing satellite channels in covering news. The article also explores interests of the TV channels in terms of news selection, treatment and presentation
The Theme of Conflict in The Novels of F. Scott Fitzgerald
Authors: Shusil Kumar Das
Published: August 2024

Conflict of various dimensions is a major theme operating at subtle scales in the deeper levels of the novels of F. Scott Fitzgerald. Through the ever-operative force of conflic,t the novelist has demonstrated the essential character and spirit of the time of his contemporary American society. The article at hand is an elaborate study to reveal the nature and dimensions of the conflicts.
SMOKING PREVALENCE AMONG DRIVERS OF DHAKA CITY:
Authors: Munmun Shabnam Bipasha , Shatabdi Goon
Published: August 2024

Smoking is an increasingly prevalent habit in Bangladesh, particularly among men with low socio-economic status. Tobacco expenditures exacerbate the effects of poverty and cause significant deterioration in living standards among the poor Bangladeshi people. A cross sectional study was carried out from 15th to 26th March, 2013 to determine the prevalence, pattern, socio-economic impact of smoking among bus drivers of Dhaka city. The prevalence of cigarette smoking was 93% and 20% of total income was spent on cigarettes indicating more than twice as much as per capita expenditure on food, clothing, housing, health and education combined, resulting in illiterate, malnourished household members. Though most (32.3%) of the drivers started smoking before involving in driving profession, excessive smoking was promoted by occupational and environmental stress experiencing hectic work schedule. Tobacco can also worsen poverty among users and their families since most of the drivers reported heart disease (26.9%) and other health complications caused by smoking, depriving families of much-needed income and imposing additional costs of health care. Around 70% smokers wished to quit smoking considering its detrimental effect but unknown of quitting strategy. Interventions and preventions by policy makers, public health experts and other stakeholders should be introduced because smoking was more prevalent among bus drivers with detrimental health sequel.
ATENÇÃO Á SAÚDE OBSTÉTRICA EM GRUPOS VULNERÁVEIS: ACESSO A CUIDADOS E DISPARIDADES DE SAÚDE
Authors: Melo Ana Beatriz Oliveira de , Nascimento Maria Eduarda Bezerra do , Barros Leonell Leles de , Fragoso Raíssa , Ribeiro Victória Cristina Tomás , Esteves Ryan Farias , Sales Elaine Vanessa da Silva , Silva Maria Eduarda Martins da , Barradas Amanda Melo , Silva João Henrique dos Santos , Cavalcanti Ana Luiza Batista , Nogueira Ivana Sobral Cardoso
Published: August 2024

Introdução: A atenção à saúde obstétrica em grupos vulneráveis é fundamental para garantir o direito à saúde reprodutiva e reduzir as disparidades de saúde. Mulheres em situações de vulnerabilidade, como aquelas em condições socioeconômicas desfavoráveis, minorias raciais e migrantes, enfrentam barreiras significativas no acesso a cuidados de qualidade. Essas barreiras incluem falta de informação, discriminação, dificuldade no acesso aos serviços de saúde e insuficiência de políticas públicas adequadas. Objetivo: Analisar o acesso aos cuidados obstétricos em grupos vulneráveis, identificando as principais disparidades de saúde enfrentadas por essas populações. Metodologia: A pesquisa foi realizada em agosto de 2024 por meio do acesso online às seguintes bases de dados: LILACS (Literatura Latino-Americana e do Caribe em Ciências da Saúde), Bireme (Centro de Informação em Ciências da Saúde da América Latina e do Caribe), SCIELO (Scientific Electronic Library Online) e BVS (Biblioteca Virtual em Saúde). Resultados e Discussão: Os resultados apontam que mulheres de grupos vulneráveis, como aquelas de baixa renda, minorias étnicas e migrantes, apresentam maior dificuldade de acesso a cuidados obstétricos adequados. Entre os principais fatores identificados estão a falta de assistência pré-natal de qualidade, barreiras geográficas e culturais, além de discriminação dentro dos serviços de saúde. Essa realidade contribui para taxas mais elevadas de complicações na gravidez e mortalidade materna entre essas populações. A discussão evidencia a urgência de políticas públicas voltadas para a redução dessas desigualdades, incluindo a capacitação dos profissionais de saúde, a expansão de serviços acessíveis e a implementação de programas de apoio social que contemplem as especificidades de cada grupo vulnerável. Considerações Finais: Conclui-se que as disparidades no acesso a cuidados obstétricos entre grupos vulneráveis são evidentes e contribuem para desfechos negativos de saúde materna. São essenciais a implementação de políticas públicas inclusivas e a promoção de cuidados obstétricos equitativos, com foco na redução de barreiras sociais, culturais e econômicas, garantindo que todas as mulheres, independentemente de sua condição, tenham acesso a um atendimento de qualidade.
ENDOMETRIOSE E FERTILIDADE: EFEITOS NA GRAVIDEZ E ABORDAGENS TERAPÊUTICAS
Authors: Melo Ana Beatriz Oliveira de , Nascimento Maria Eduarda Bezerra do , Barros Leonell Leles de , Fragoso Raíssa , Ribeiro Victória Cristina Tomás , Esteves Ryan Farias , Sales Elaine Vanessa da Silva , Silva Maria Eduarda Martins da , Barradas Amanda Melo , Silva João Henrique dos Santos , Cavalcanti Ana Luiza Batista , Nogueira Ivana Sobral Cardoso
Published: August 2024

Introdução: A endometriose é uma condição ginecológica caracterizada pelo crescimento de tecido semelhante ao endometrial fora do útero, o que pode afetar a fertilidade feminina. Estima-se que até 50% das mulheres com endometriose enfrentem dificuldades para engravidar. Os efeitos da endometriose na gravidez incluem alterações anatômicas e inflamação pélvica, que podem prejudicar a função reprodutiva. As abordagens terapêuticas para a infertilidade associada à endometriose variam de tratamentos hormonais e cirúrgicos à fertilização in vitro (FIV), dependendo da gravidade do caso e do desejo da paciente de preservar a fertilidade. Objetivo: Analisar os efeitos da endometriose na fertilidade feminina, abordando suas implicações na gravidez. Metodologia: A pesquisa foi conduzida por meio de acesso online às bases de dados Documentação em Ciências da Saúde da América Latina e do Caribe (LILACS), Centro de Informação em Ciências da Saúde da América Latina e do Caribe (Bireme), Scientific Electronic Library Online (SCIELO) e Biblioteca Virtual em Saúde (BVS) durante o mês de agosto de 2024. Resultados e Discussão: Os resultados indicam que a endometriose pode comprometer a fertilidade ao causar aderências, inflamação e alterações anatômicas que dificultam a concepção. Estudos mostram que mulheres com endometriose têm menores taxas de fertilização e implantação embrionária. As abordagens terapêuticas, como tratamentos hormonais e cirurgias laparoscópicas, têm se mostrado eficazes em alguns casos, melhorando as chances de gravidez. Além disso, a fertilização in vitro (FIV) surge como uma opção importante, especialmente em casos graves. No entanto, o sucesso dos tratamentos varia, dependendo da extensão da endometriose e do tempo de diagnóstico. Considerações Finais: Conclui-se que a endometriose pode impactar significativamente a fertilidade, dificultando a concepção natural para muitas mulheres. Embora existam várias opções terapêuticas, como tratamentos hormonais, cirurgias e técnicas de reprodução assistida, o sucesso depende da gravidade da doença e do tratamento individualizado. A identificação precoce e a escolha do tratamento adequado são cruciais para melhorar as chances de gravidez em pacientes com endometriose.
Gestão da Insuficiência Hepática Aguda em Pacientes com Hepatite Viral Crônica
Authors: Silva Marcelo Fontes da , Júnior José Amarildo Avanci , Saut Melissa Garcia Silva , Nery Erica Prevital , Serpa Sarah Flores , Rodrigues Maria Isabella Calvento , Lyrio Beatriz Corrêa , Comarella Giulia , Morais Lucas Oliveira , Gastaldi Álvaro Nantes Vieira , Costa Josué Gabriel da , Michel Carolina Mazutti
Published: August 2024

Este artigo revisa a gestão da insuficiência hepática aguda (IHA) em pacientes com hepatite viral crônica, uma condição grave que resulta em alta mortalidade e requer intervenções rápidas e eficazes. A hepatite viral crônica, especialmente as causadas pelos vírus da hepatite B (HBV) e C (HCV), pode evoluir para IHA devido a reativações virais, superinfecções ou fatores como a ingestão de álcool e uso de medicamentos hepatotóxicos. O objetivo deste estudo foi revisar a literatura existente para identificar estratégias eficazes de prevenção e manejo clínico da IHA em pacientes com hepatite viral crônica. A metodologia envolveu uma revisão integrativa de artigos publicados entre 2013 e 2023, utilizando bases de dados como PubMed, SciELO, e LILACS, com critérios de inclusão rigorosos para garantir a relevância dos estudos analisados. Os resultados indicam que a IHA nesses pacientes é frequentemente precipitada por uma combinação de fatores, incluindo reativações virais e exposição a agentes hepatotóxicos. O manejo eficaz da IHA requer a supressão da replicação viral através do uso de antivirais, suporte intensivo em unidades de terapia intensiva, e, em casos graves, o transplante hepático emergencial. O transplante hepático mostrou-se a intervenção mais eficaz para pacientes em estado crítico, proporcionando taxas de sobrevivência significativamente maiores a longo prazo. No entanto, a prevenção continua sendo o foco mais eficaz, com ênfase no monitoramento regular da função hepática, adesão estrita à terapia antiviral, e educação dos pacientes sobre os riscos de substâncias hepatotóxicas. Conclui-se que, embora o transplante hepático seja crucial para salvar vidas em casos avançados, estratégias preventivas e intervenções precoces são essenciais para reduzir a incidência de IHA e melhorar os resultados clínicos em pacientes com hepatite viral crônica.
Impactos da má qualidade do sono em profissionais da saúde em ambiente emergencial
Authors: Domingos Leonardo Tavares , Matos João Paulo Abdallah , Silva Alexia Beatriz da , Domingos Lucas Tavares , Pianta Pedro Henrique , Chehab Luiza de Jesus , Félix Vitória Pimentel Martins , Filho Willian Guimarães Santos de Carvalho , Lima Marina Silva Camarço , Magalhães Isadora Dantas Carvalho , Carvalho Maria Cândida Rêgo Silva de , Santos Carlos Henrique Gomes
Published: August 2024

Este estudo tem como objetivo avaliar os impactos da má qualidade do sono entre os profissionais de saúde em ambientes emergenciais. Os serviços de saúde voltados para o manejo de situações críticas frequentemente são caracterizados por ambientes de trabalho de alta pressão e estresse. Isso ocorre devido à gravidade das condições enfrentadas pelos pacientes, que podem apresentar risco iminente de morte ou sofrimento severo. Os profissionais que atuam nessas áreas estão particularmente suscetíveis ao estresse ocupacional e a problemas de saúde, devido às demandas intrínsecas da função e às condições adversas, como a escassez de recursos humanos e materiais, sobrecarga de trabalho, ambientes inadequados, superlotação e falta de reconhecimento por parte da administração. trata-se de uma revisão narrativa de caráter crítico e analítico, na  pesquisa  sobre  os principais  conceitos  no  que tange às complicações da CRM, além dos aspectos essenciais de diagnóstico e tratamento. Foi  realizada  uma  revisão  de  artigos  nas  bases  de  dados   Scientific  Electronic  Library  Online (SciELO) e PubMed, com os seguintes Descritores em Ciências  da  Saúde  (DeCS): Descanso; Qualidade de vida; Saúde. Ambientes de trabalho em serviços de emergência estão frequentemente associados a elevados níveis de estresse, resultando em um impacto significativo no bem-estar físico, mental e emocional dos profissionais.
Оцінка ефективності проектування складу бетонних сумішей на альтернативних заповнювачах з природних ресурсів прикарпатського регіону
Authors: Андрусяк А. В. , Сільчук Д. В. , Величкович А. С.
Published: August 2024

Запроектовано склади бетонних сумішей з використанням альтернативних заповнювачів, отриманих із природних ресурсів Прикарпаття. Основним завданням було отримання сумішей з рухливістю S4 для виготовлення бетонного каменю класу міцності С32/40. Задля забезпечення потрібних фізико-механічних характеристик бетону до складу сумішей вводили оптимальну дозу добавки на основі карбоксиловмісних полімерів. Для кожного типу заповнювача підготували серію бетонних сумішей з різним дозуванням карбоксиловмісного модифікатора. Визначали рухливість сумішей та оцінювали міцність затверділих зразків. Отримані результати підтвердили можливість виготовлення високоміцних класів бетону на альтернативних заповнювачах із природних ресурсів Прикарпатського регіону.
Моделювання та аналіз термопружного стану оболонкової системи
Authors: Бондарський О.Г. , Ужегова О.А.
Published: August 2024

Розглядається вплив коефіцієнта теплопровідності на параметри термопружного стану тришарової ортотропної розбіжної оболонки типу «циліндр – конус».
Історичні аспекти розвитку геодезичного приладобудування: прилади для виконання геометричного нівелювання
Authors: Верешко О.В. , Король П.П. , Пугач С.О.
Published: August 2024

У даній роботі з історичних позицій проаналізовано еволюційний розвиток геодезичного приладобудування на прикладі приладів для виконання геометричного нівелювання: від римського хоробата до автоматичного оптичного нівеліра з компенсатором і внутрішнім фокусуванням. Підкреслено важливість конструктивних удосконалень оптичних геодезичних приладів та їх внесок у розробку сучасних електронних нівелірів.
Огляд збірних каркасних конструктивних Систем будівель
Authors: Гарькава О.В.
Published: August 2024

У сьогочасній будівельній діяльності України основним завданням є ефективна відбудова житлового фонду. Швидкість зведення будівель та використання теплоефективних матеріалів є ключовими аспектами цього процесу. Аналізуються рішення збірних каркасних конструктивних систем будівель, котрі найбільш задовольняють висунуті вимоги. Показано, що серед інших безбалкова безкапітельна система будівель максимально відповідає сучасним запитам населення. Проведений аналіз показує, що вона має значні переваги, такі як: зменшення товщини перекриття, прискорення термінів будівництва та збільшення корисного об'єму приміщень. Ця конструктивна система будівель є найбільш ефективною та затребуваною для зведення житлових і цивільних об'єктів, що вимагає удосконалення методів розрахунку її несучої здатності для забезпечення надійності та безпеки експлуатації будівель.
Реконструкція інженерних об’єктів нежитлового фонду в контексті відновлення україни
Authors: Добровольська О.Г. , Фостащенко О.М. , Чудновський П.Б.
Published: August 2024

У даній праці здійснено аналіз досвіду відновлення міст після війни в інших країнах. Проаналізувавши результати наукових публікацій, приходимо до висновку, що в Україні формується індивідуальний підхід до відбудови. В роботі представлено варіант реконструкції нежитлової будівлі із застосуванням енергоощадних технологій, виконано порівняльний аналіз чотирьох варіантів опалення будівлі з використанням нетрадиційних та відновлювальних джерел енергії.
Опір кам’яних і залізобетонних елементів діагональному розколюванню
Authors: Довженко О.О. , Погрібний В.В. , Пенц М.В. , Мищенко М.О.
Published: August 2024

Розглядаються питання забезпечення цілісності кам’яних та залізобетонних  елементів несучих систем будівель і споруд при дії навантаження, рівнодійна якого спрямована за діагоналлю в площині елемента. Найбільш поширеним є випадок спільної дії вертикальних і горизонтальних сил, котрі у сейсмічних районах будівництва в значній мірі впливають на несучу здатність конструкцій. Особлива увага приділена дрібнорозмірним елементам, до яких відноситься цегляна кладка, та залізобетону як композитному матеріалу. Відмічається складність їх напружено-деформованого стану при діагональному розколюванні. Опір оцінюється на основі розривних рішень у теорії пластичності.
Торгово-розважальні центри. Класифікація. Етапи проєктування та норми будівництва
Authors: Зеленська В.В. , Шевченко Я.О. , Тригуб Р.М.
Published: August 2024

Торгівельно-розважальні центри є невід’ємною частиною структури сучасного урбаністичного середовиша. Вони є центром дозвілля, реалізації торгівлі та мають прямий вплив на економічний розвиток та суспільне життя міст та агломерацій. Проектування та будівницвтво торгівельно-розважальних центрів є складним процесом та потребує дотримання багатьох норм та стандартів.
Імовірнісний аналіз рівня теплової надійності покриттів житлових будівель на території україни
Authors: Карюк А.М. , Коба Б.Р.
Published: August 2024

За авторською методикою отримані імовірні тривалості стану теплової відмови суміщених покриттів житлових будівель за критерієм перевищення допустимого температурного перепаду між внутрішнім повітрям і внутрішньою поверхнею огородження. У 25 регіонах України (за винятком Південного берега Криму з істотно вищими температурами повітря) імовірні тривалості теплових відмов досить систематично зростають з південного заходу на північний схід у межах від 153 до 221 хвилини/рік. Виявлені відмінності рівня теплової надійності покриттів у різних регіонах України спонукають до більш точного нормування мінімально необхідного опору теплопередачі.
Lehrerbildung und Volksschullehrer: Ein Modell der Verbindung von Theorie und Praxis?
Authors: Krummenacher Hans
Published: August 2024

Wer andere bildet, muss sich immer wieder die Frage nach seiner eigenen Aus- und Weiterbildung stellen. Entzündet sich denn das, was ich den andern vermittle, wirklich am Leben, entspricht meine empfundene und gelebte Wirklichkeit der Wirklichkeit? Die Wirklichkeit besteht für mich zu einem grossen Teil in der Schulwirklichkeit. Kann ich Lehrerbildner sein, ohne als Volksschullehrer immer wieder mit der von mir dargestellten Wirklichkeit konfrontiert zu sein? Ist meine seminaristische Tätigkeit nicht als exemplarisch und wirklich zu sehen? Diese Fragen sind für mich wichtig, ja sogar entscheidend für eine kontinuierliche Weiterarbeit. Im Rückblick auf eine mehrjährige Tätigkeit als Volksschul- und Seminarlehrer möchte ich versuchen, einige Impulse weiterzugeben.
13 Thesen zur Denkerziehung
Authors: Iten Theo , Schoch Fritz
Published: August 2024

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Modellvorschläge für die Verbesserung und Koordination der Lehrerbildung für die Sekundarstufe I in der Schweiz
Authors: Badertscher Hans
Published: August 2024

In den Thesen und Empfehlungen, die aus dem Expertenbericht "Lehrerbildung von morgen" hervorgegangen sind, wurde bereits vor acht Jahren die Forderung nach einer entsprechenden Arbeit auf dem Gebiet der Lehrerbildung für die Sekundarstufe I erhoben. Fünf Jahre später nahm eine gemeinsame Arbeitsgruppe der Pädagogischen Kommission und der Kommission für Mittelschulfragen der EDK das Vorhaben in Angriff mit dem konkreten Auftrag, "Modellvorschläge für die Verbesserung und Koordination der Lehrerbildung für die Sekundarstufe I sowie Empfehlungen zur Verbesserung der Zusammenarbeit zwischen den Lehrerbildungsinstitutionen" auszuarbeiten. Seit Juni dieses Jahres nun liegt der Bericht unter dem Titel "Die Ausbildung der Lehrer für die Sekundarstufe I" vor. Einer Arbeit, die sich mit der Lehrerbildung dieser Stufe im ganzen Raum der Schweiz befasst, stellen sich durch den uneinheitlichen Charakter sowohl der Stufe wie der Ausbildungsgänge der Lehrer Schwierigkeiten grundsätzlicher Art entgegen. Im Dickicht der schweizerischen Bildungslandschaft war ein Weg zu bahnen, dessen Zustandekommen und Ziel nachvollziehbar und eindeutig sein sollten. Die folgenden Hinweise sollen einen vorläufigen Einblick geben in die bearbeitete Problematik und die vorliegenden Lösungsansätze.
Vom Phänomen zum Begriff - vom Begriff zur Handlung. Zur Didaktik der pädagogischen Fächer in der Lehrerbildung
Authors: Reusser Kurt
Published: August 2024

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Unterrichtsvorbereitung. Ein Beitrag zum Unterricht in Allgemeiner Didaktik
Authors: Schwarzenbach Peter
Published: August 2024

Die nachfolgenden Schemata und Denkmodelle sind als Hilfsmittel zur Ausbildung von angehenden Instruktoren bzw. Lehrern gedacht und üben einen mehr oder weniger sanften Druck auf sie aus, sich ganz bestimmte pädagogisch-didaktische Gedanken über Unterricht zu machen. Folgende Grundhaltungen zum Unterrichten und Erziehen stehen dahinter (ich beschränke mich aus Platzgründen auf globale Hinweise): Transparenz der Unterrichtsziele / Individualisierender Unterricht / Hohe Selbsttätigkeit der Schüler / Schwergewicht der Unterrichtsvorbereitung auf organisatorisch-lernpsychologisch-sozialen Überlegungen; der allzu detaillierten Stoffgliederung kommt sekundäre Bedeutung zu / Üben soll primär in der Schule unter Hilfe des Lehrers erfolgen / Konflikte im sozialen Bereich und im Lernprozess sollen nicht als peinlich, sondern primär als Lernchance betrachtet werden / Ziele sollen handlungsorientiert und konkret fassbar formuliert werden / Der Lehrer soll Hilfe zur Selbsthilfe bieten und primär als professioneller "Lernstörungsbeheber", weniger als Stoffvermittler, amten.
Der Einfluss der Schulstruktur auf die Interpretation von Erziehungszielen durch den Lehrer. Zwei Fallstudien an einer öffentlichen und konfessionellen Schule
Authors: Oggenfuss August
Published: August 2024

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Pengaruh Peran Dan Inovasi Terhadap Kinerja Karyawan Di Ptpn Iv Unit Kebun Marihat
Authors: Ummi Mardiah  , Simatupang Pandapotan
Published: August 2024

Pengaruh Peran dan Inovasi Terhadap Kinerja Karyawan di PTPN IV Unit Kebun Marihat. Penelitian ini bertujuan untuk mengetahui apakah peran dan inovasi berpengaruh terhadap kinerja karyawan di PTPN IV Unit kebun Marihat, Karyawan yang dimaksud disini ialah mandor yang bertugas di PTPN IV Unit Kebun marihat. Hipotesis pada penelitian ini adalah peran dan inovasi berpengaruh terhadap kinerja karyawan di PTPN IV Unit kebun marihat. Responden pada penelitian ini adalah seluruh populasi yang berjumlah 36 orang, yaitu Mandor yang bertugas di PTPN IV Unit kebun Marihat tersebut. Teknik analisa data yang digunakan adalah regressi berganda dengan persamaan Y  = a + bX1 + bx2 dan dari hasil analisa data diketahui Y=0,493 + 0,624X1 + 0,352X2, Dari uji hipotesis secara parsial bahwa peran dan inovasi berpengaruh terhadap kinerja karyawan di PTPN IV Unit kebun Marihat.Dengan demikian hipotesis diterima
Analisis Faktor - Faktor Yang Mempengaruhi Minat Beli Hijab/Pakaian Muslimah Pada Mahasiswi Fakultas Eekonomi Universitas Simalungun
Authors: Novi Anggraini  , Saragih Liharman , Purba Johanes W P
Published: August 2024

Tujuan penelitian ini untuk mengetahui faktor-faktor yang dapat  mempengaruhi minat beli mahasiswi Fakultas Ekonomi Universitas Simalungun terhadap penggunaan hijab/pakaian muslim melalui aspek perhatian, ketertarikan, keinginan, keyakinan, dan keputusan pembelian konsumen, data penelitian yang digunakan data kuantitatif yaitu bersumber dari pembagian kuesioner mahasiswi fakultas ekonomi Universitas Simalungun yang menggunakan hijab, adapun penarikan sampel dalam penelitian ini adalah menggunakan random sampling dengan penarikan sampel mengunakan rumus Slovin dengan hasil 71 responden dari populasi yaitu mahasiswi fakultas ekonomi Universitas Simalungun yang bersedia menjadi narasumber yang berjumlah 86 orang. Dengan pembagian kuesioner dan pengukuran mengunakan skala likert yang berupa angka-angka dan dioperasikan menggunakan SPSS versi 25.Teknik pengumpulan data yang dilakukan adalah studi dokumentasi dan studi kepustakaan dengan pengujian menggunakan KM0 (Kaiser Meyer Oklin). Hasil uji pengujian Bartlentts Tes Of Sphericity sebesar 0,631 dan lebih besar dari 0,5. Dari nilai sebesar 0.631 dikatakan kurang baik untuk menganalisis faktor sehingga dibutuhkan penelitian lebih lanjut pada pengujian. Anti-Image Matriks Corelation dapat diuraikan diantaranya perhatian sebesar 0.593, ketertarikan sebesar 0.634, keinginan sebesar 0.603, untuk keyakinan sebesar 0.631, dan keputusan konsumen sebesar 0.699> 0.5. Pada pengujian pengujian MSA melalui nilai extraction Communalities untuk untuk semua variabel > 0,5 yaitu perhatian sebesar 0.710 atau 71%, ketertarikan sebesar 0.783 atau 78.3%, keinginan sebesar 0.603 atau 60.3%, keyakinan sebesar 0.631 atau 63.1%, dan terakhir keputusan konsumen sebesar 0.692 atau 0,692%, < 0,50 atau lebih dari 50% dari hasil yang diuraikan dari semua variabel diantaranya perhatian, ketertarikan, keinginan, keyakinan dan keputusan konsumen mampu mempengaruhi minat beli mahasiswi Fakultas Ekonomi Universitas Simalungun terhadap penggunaan hijab/pakaian muslim. Dari rotated component matriks untuk componen 1 diantaranya perhatian dan ketertarikan didukung keputusan konsumen dengan nilai component transformation matriks sebesar 0.872 lebih besar 0.5. Dari nilai 0.872 atau 87.2% dan nilai pertumbuhan 0.489 atau 48,9%. Kemudian dari rotated component matriks untuk componen 2 diantaranya keinginan dan keyakinan didukung keputusan pembelian dengan nilai component transformation matriks sebesar 0.872 lebih besar 0.5 atau dari nilai 0.872 atau 87,2% tetapi harus ada perbaikan karna memiliki nilai -0.489 atau dapat berkutang 48,9%
Meningkatkan New Product Development Capability Melalui Innovation In External Relation Dan Dampaknya Pada Kinerja Pemasaran Pengrajin Ulos Simalungun (Sebuah Pendekatan Teoritis)
Authors: Saragih Liharman , Tarigan Wico J
Published: August 2024

Tujuan dari makalah ini adalah untuk mengkaji secara teoritis akan konsep Innovation In External Relation dan New Product Development Capability, serta mengusulkan model konseptual melalui peningkatan New Product Development Capability dan pengaruhnya terhadap kinerja pemasaran pengarajin ulos simalungun, Pendekatan makalah ini adalah pendekatan dimensi, melakukan penilaian terhadap dimensi variabel yang terkandung dalam New Product Development Capability dan Innovation In External Relation. Sebuah model konseptual Innovation In External Relation dalam  menciptakan New Product Development Capability, dan dampaknya pada kinerja pemasaran.mKontribusi penting dalam penelitian ini adalah  pembentukan model konseptual pada dimensi pemasaran usaha mikro dalam meningkatkan New Product Development Capability, dan jenis-jenis New Product Development Capability yang dapat diaplikasikan dalam meningkatkan kinerja pemasaran secara khusus para pengrajin ulos Simalungun di Sumatera Utara
Pengaruh Kualitas Pelayanan Terhadap Kepuasan Konsumen Go-Food Di Kota Pematangsiantar (Studi Kasus Mahasiswa Fakultas Ekonomi Universitas Simalungun Pematangsiantar)
Authors: Sinaga Jenni  Ertina , Simatupang Pandapotan
Published: August 2024

Setelah dilakukan tinjauan pustaka maupun lapangan dan penyusunan hipotesa, data dalam penelitian ini dikumpulkan  melalui penyebaran kuisioner kepada 30 orang yang pernah menggunakan aplikasi Go-food  sebagai sampel penelitian. Teknik pengambilan sampel yang digunakan adalah accidental sampling. Metode analisis data yang digunakan adalah analisis kuantitatif yaitu uji validitas dan reabilitas, uji asumsi klasik, analisis regresi linier berganda , uji t, uji f serta koefisien determinasi. Berdasarkan analisis data, hasil penelitian menunjukkan bahwa indikator-indikator pada penelitian ini bersifat valid dan reliabel.Pada uji asumsi klasik data berdistribusi normal, tidak terjadi heteroskedastisitas dan multikolinieritas. Pada uji hipotesis tangible, reability, responsiveness, assurance, empathy  berpengaruh  positif dan signifikan terhadap kepuasan konsumen
Pengaruh Nilai Perusahaan Dan Struktur Modal Terhadap Profitabilitas Pada Perusahaan Sub Sektor Food And Beverage Di Bursa Efek Indonesia Saham LQ45 Periode 2012-2021
Authors: Jovie Febriansyah  , Dimas Ananta  , Saragih Rio Juanda Putra
Published: August 2024

Tujuan penelitian ini adalah 1. Untuk mengetahui pengaruh nilai perusahaan terhadap profitabilitas, 2. Untuk mengetahui pengaruh struktur modal terhadap profitabilitas, 3. Untuk mengetahui pengaruh nilai perusahaan dan struktur modal terhadap profitabilitas secara simultan. Penelitian ini dilakukan dengan menggunakan metode deskriptif kuantitatif. Pengumpulan data disajikan dengan metode penelitian kepustakaan dan dokumentasi. Teknik analisis data yang digunakan adalah uji asumsi klasik, analisis regresi linear berganda, uji t, uji f dan uji koefisien determinasi. Analisis dilakukan dengan menggunakan program IBM SPSS Statistik V.26. Hasil penelitian ini dapat disimpulkan sebagai berikut : 1. Dari hasil uji T nilai perusahaan berpengaruh signifikan terhadap profitabilitas, 2. Dari hasil uji T  struktur modal berpengaruh signifikan terhadap profitablititas, 3. Dari hasil uji F nilai perusahaan dan struktur modal secara simultan berpengaruh signifikan terhadap profitabilitas
Pengaruh Kualitas Pelayanan Terhadap Loyalitas Pelanggan Dengan Kepuasan Pelanggan Sebagai Variabel Intervening Pada Evony Coffee Shop Siantar
Authors: Gultom Imelda , Samosir Alexander
Published: August 2024

Penelitian ini bertujuan untuk mengetahui: (1) pengaruh kualitas pelayanan terhadap loyalitas pelanggan di Evony Coffee Shop Siantar, (2) pengaruh kualitas pelayanan terhadap kepuasan pelanggan di Evony Coffee Shop Siantar, (3) pengaruh kepuasan pelanggan terhadap loyalitas pelanggan di Evony Coffee Shop Siantar, (4) pengaruh kualitas pelayanan terhadap loyalitas pelanggan dengan kepuasan pelanggan sebagai variabel intervening padaEvony Coffee Shop Siantar. Penelitian ini merupakan penelitian kuantitatif dengan metode survei. Populasi pada penelitian ini adalah seluruh konsumen Evony Coffee Shop Siantar. Teknik pengambilan sampel menggunakan purposive sampling dengan jumlah sampel sebanyak 50 orang. Teknik pengumpulan data menggunakan kuesioner yang telah diuji validitas dan reliabilitasnya. Teknik analisis data yang digunakan untuk menjawab hipotesis adalah analisis jalur dengan bantuan regresi sederhana dan uji sobel. Hasil penelitian ini menunjukkan bahwa: (1) kualitas pelayanan berpengaruh positif terhadap loyalitas pelanggan sebesar 7,040 dengan  nilai signifikansi 0,000 <0,05; dan koefisien regresi sebesar 0,409; (2) kualitas pelayanan berpengaruh positif terhadap kepuasan pelanggan sebesar 5,001 dengan nilai signifikansi 0,000 < 0,05; dan koefisien regresi sebesar 0,479; (3) kepuasan pelanggan berpengaruh positif terhadap loyalitas pelanggan sebesar 5,873 dengan nilai signifikansi 0,000 < 0,05; dan koefisien regresi sebesar 0,282; dan (4) kualitas pelayanan tidak berpengaruh terhadap loyalitas pelanggan dengan kepuasan pelanggan sebagai variabel intervening pada Evony Coffee Shop Siantar karena koefisien intervening sebesar 0,0887 lebih kecil dari nilai pengaruh langsung sebesar 0,409
Peranan Relational Capital Sebagai Sumber Daya Tidak Berwujud Dalam Memulai Usaha Mikro (Studi Pada Mahasiswa Perempuan Di Fakultas Ekonomi Universitas Simalungun Pematangsiantar)
Authors: Purba Johanes Wilfrid Pangihutan , Saragih Liharman
Published: August 2024

Penelitian ini bertujuan untuk mengetahui bagaimana peran relational sebagai sumber daya tidak berwujud dalam memulai usaha pada mahasiswa Fakultas Ekonomi Universitas Simalungun. Konsep CAOS digunakan dengan pendekatan model penelitian secara kualitatif pada pelaku usaha mikro perempuan di Fakultas Ekonomi USI pematangsiantar. Hasil penelitian menunjukkan bahwa memiliki karakteristik ( C ) yang baik namun untuk Lingkungan (A) tidak terlalu diperhatikan hanya fokus pada lingkungan internal bagaimana membuat produk yang baik, sedangkan kebutuhan pada eksternal seperti pemasok, pelanggan dan industri sejenis belum begitu diperhatikan. Untuk organisasi (O) memiliki tujuan yang berorientasi keuntungan  namun dalam hal bagaimana cara (role model) dan bentuk pengukuran kinerja tidak begitu jelas, hanya sebatas menjalankan usaha saja. Poin (S) ide bisnis berasal dari diri sendiri dan teman belum melihat secara detil akan pemenuhan kebutuhan pasar
Pengaruh Penilaian Prestasi Kerja dan Kompetensi Pegawai Terhadap Promosi Jabatan Pada Kantor Pelayanan Perbendaharaan Negara (KPPN) Pematangsiantar
Authors: Hasibuan Khairun Nisa , Purba Fariaman , Parinduri Taufik
Published: August 2024

Tujuan dari penelitian ini adalah untuk mengetahui bagaimana pengaruh penilaian prestasi kerja dan kompetensi pegawai terhadap promosi jabatan. Dari hasil penelitian ini di peroleh persamaan regresi Y = 0,136 + 0,154X1+ 0,840X2 menunjukkan bahwa: secara parsial terdapat pengaruh yang positif dan signifikan antara penilaian prestasi kerja terhadap promosi jabatan yang ditunjukkan dari hasil uji thitung 18,118 > ttabel 2,069 dengan signifikan 0,000 <  0,05. Dan juga terdapat pengaruh yang signifikan antara kompetensi pegawai terhadap promosi jabatan yang ditunjukkan dari hasil uji thitung 3,160 > ttabel 2069 dengan signifikan 0,004 < 0,05. Secara simultan terdapat pengaruh signifikan antara penilaian prestasi kerja dan kompetensi pegawai terhadap promosi jabatan, hal ini ditunjukkan pada Fhitung 481.236 > Ftabel 3,42 dengan signifikan 0,000 < 0,05. Dengan nilai R2 diperoleh besarnya pengaruh penilaian prestasi kerja dan kompetensi pegawai sebesar 97,5% dan sisanya sebesar 2,5% dipengaruhi variabel lain diluar penelitian ini