bluuebunny/crossref_metadata_2025 huggingface dataset:
Two-stage thermal and heterogeneous catalytic transformation of hydrolysis lignin in supercritical n-hexane
Authors: Боброва Н.А. , Коклин А.Е. , Богдан Т.В. , Мащенко Н.В. , Коротаева А.М. , Богородский С.Э. , Богдан В.И.
Published: October 2024

Переработку гидролизного лигнина в среде сверхкритического н-гексана осуществляли в две стадии: 1) термическая обработка лигнина в автоклаве при 250°С и 15 MПa в среде аргона; 2) гидрирование раствора полученных на первой стадии продуктов при 250°С и 9,0 MПa в присутствии катализатора Ru/C. Полученные на первой и второй стадиях продукты анализировали методами высокоэффективной жидкостной хроматографии, гель-проникающей хроматографии и газовой хроматографии, хромато-масс-спектрометрии и элементного анализа. На первой стадии степень деполимеризации составила 17 %; перешедшие в раствор в результате деполимеризации моно- и олигомерные фрагменты лигнина имеют молекулярномассовое распределение (ММР) в пределах от 65 Да до 270 кДа. Определен состав мономеров в продуктах деполимеризации первой стадии: моно-, ди, три- и тетраалкилпроизводные бензола (2,8 мас. %), гваякол и его 4-алкилпроизводные (0,6 мас. %), в том числе конифериловый спирт (0,06 мас. %). На второй стадии происходят следующие процессы: 1) деполимеризация олигомеров до мономеров; 2) гидрирование мономерных фенолов в оксо- и алкилпроизводные циклогексана; 3) образование газовых продуктов (преимущественно метана, 95 об. %) вследствие каталитического гидрокрекинга растворителя.

Depolymerization of hydrolysis lignin in supercritical n-hexane medium was carried out in two stages: 1) lignin treatment in an autoclave at 250°C and 15 MPa; 2) hydrogenation of the solution obtained in the first stage at 250°C and 9 MPa on a Ru/C catalyst. The products of the first and second stages were analyzed by HPLC, GPC, gas chromatography, chromatography-mass spectrometry, and elemental analysis. At the first stage, the degree of depolymerization was 17 %, the mono- and oligomeric fragments of lignin that passed into solution as a result of depolymerization have an MMD from 65 Da to 270 kDa. Monomer composition of the solution: mono-, di-, tri- and tetraalkyl derivatives of benzene (2.8 wt. %), guaiacol and its alkyl derivatives (0.6 wt. %), including coniferyl alcohol (0.06 wt. %). At the second stage of transformation the following processes occur: 1) depolymerization of oligomers to monomers; 2) hydrogenation of monomeric phenols to derivatives of cyclohexane and its oxo derivatives; 3) formation of gas products, mainly methane (95 vol. %), as a result of hydrocracking of the solvent.
DEVELOPMENT OF A METHOD FOR IMPREGNATING CARBON GRAPHITE WITH AN AQUEOUS SOLUTION OF COPPER PLATING ELECTROLYTE
Authors:   Volgograd State Technical University, KIDALOV N.A. , MIROSHKIN N.YU. ,   Volgograd State Technical University, GULEVSKY V.A. ,   Volgograd State Technical University, TSURIKHIN S.N. ,   Volgograd State Technical University, NURGALIEV K.K. ,   Volgograd State Technical University
Published: October 2024

The article is devoted to the development of a method of impregnation of porous carbon graphite frame with aqueous solution of copper electrolyte. It is shown that at impregnation under atmospheric pressure the percentage of filling of open pores amounted to 9.7% for 2 hours of soaking, while the impact of ultrasound allowed to achieve filling of 57.2% for the same time. Carbon graphite billets aged in electrolyte for 24 hours showed 84% open pore filling, and the application of ultrasound allowed filling 98.3% of open pores in 8 hours of soaking.
Between plunder and shock
Authors: Castro Adriana
Published: October 2024

This document highlights that the Peruvian State took advantage of the pandemic as an opportunity to infringe upon the rights of indigenous peoples by accelerating the prior consultation processes in the mining sector, thus violating rights recognized in its own legislation and the jurisprudence of the Inter-American Court. The analysis of consultation processes (2020-2022) evidenced (I) lack of accessibility, as the State used legal Spanish in all process documents, despite the fact that in 77.7% of the communities, over 80% of the population had an indigenous language as their mother tongue; (II) lack of good faith, as 88% of the cases had stages shortened and the intercultural dialogue stage excluded; and (III) the failure to aim at reaching an agreement, using less time and recording only a matrix of agreements from one community.
Entre el Estado y la comunidad
Authors: Medan Marina
Published: October 2024

El artículo aborda el gobierno de la juventud “en riesgo” y la relación entre el Estado y la comunidad a través de las burocracias de nivel de calle. Utilizando como caso paradigmático a la figura de un agente estatal que implementa un programa de inclusión juvenil en el mismo barrio popular de Buenos Aires (Argentina) en el que reside, se aborda el carácter híbrido del Estado (Haney, 2010). El agente híbrido, mediante un trabajo relacional que enlaza prácticas cotidianas y moralidades, encarna un modelo versátil de gobierno y produce distinciones, jerarquías y legitimidad hacia sus superiores, colegas y destinatarios. La pertenencia territorial, el profesionalismo y la cercanía social, etaria y de género se combinan y habilitan posiciones móviles que tienen efectos en las desigualdades de la interacción. En la discusión se problematizan las categorías “proyecto de vida”, “autonomía” y “transición” centrales a los programas orientados hacia las juventudes pobres. Se analizan datos cualitativos producto de un estudio socioantropológico realizado entre 2016 y 2018.
Violencia en parejas de mujeres lesbianas
Authors: Laliga-Mollá Mónica , San Martín-Martínez Conchi , Coll-Planas Gerard , Badenes-Ribera Laura
Published: October 2024

La violencia en parejas de mujeres lesbianas es un fenómeno invisibilizado en nuestra sociedad, lo cual dificulta su abordaje e intervención, en especial, en los procesos de desvictimización. Este trabajo tiene como objetivo conocer los procesos de búsqueda de ayuda de las mujeres lesbianas víctimas de esta violencia en Cataluña. Tras la puesta en práctica de un cuestionario, los resultados informaron que muchas de las participantes cuentan las situaciones de violencia, pero no todas ellas deciden pedir ayuda. Las amistades y la atención psicológica destacaron como principales fuentes de apoyo entre las participantes que iniciaron los procesos de búsqueda de ayuda. La solicitud de ayuda tiene lugar en la gran mayoría de las participantes cuando están presentes las situaciones de violencia y la relación de pareja continúa. Este estudio, además de visibilizar estos procesos, señala recomendaciones para futuras investigaciones con el fin de seguir avanzando y mejorar la atención, acompañamiento y apoyo de las mujeres lesbianas víctimas de la violencia en pareja.
Identitásformáló kulturális eszközök az Európai Unió megközelítésében
Authors: Balatoni Monika , Pap Melinda Patrícia
Published: October 2024

Az Európában felerősödő integrációs folyamatok következményeképpen egyre nagyobb figyelmet kap a kulturális identitás fogalma. Az európai identitásvizsgálat évtizedek óta foglalkoztatja az Európa jelenével és jövőjével foglalkozó kutatók, politikusok, kulturális gondolkodók nagy részét. A tanulmány célja az elméleti kereteken túlnyúlva, az ezt vizsgáló kutatásokat alapul véve ismertetni az európai polgárok Európához és az Európai Unióhoz kötődő viszonyát, és e keretek között értelmezni az európai kulturális identitás kérdéseit. A kutatás célja bemutatni, milyen létező alapokon nyugszik a közös kulturális tudat értékrendszere és milyen szerepet tölthet be a kultúra a tagállami és uniós szintű érdekek között.
Determining Residential Areas Based on Bioclimatic Conditions in Kahramanmaraş, Türkiye
Authors: Doğruluk Ahmet Doğan , Ekercin Semih , Varlık Abdullah
Published: October 2024

Bioclimatic comfort refers to the climatic conditions that contribute to individuals’ physiological and psychological well-being. Criteria such as temperature, relative humidity and wind speed are pivotal in determining bioclimatic comfort. Bioclimatic areas should be taken into consideration in urban planning studies for both human well-being and energy saving. This study endeavors to identify bioclimatic comfort areas tailored for Kahramanmaraş. 57 years of climate data obtained from 32 meteorological stations were used. These data were imported into ArcGIS 10.8 geographic information systems (GIS) software. Bioclimatic comfort levels were analyzed on a monthly, seasonal, and annual basis, employing the Discomfort Index (DI), Heat Index (HI), and Wind Chill Index (WCI). The findings revealed that the optimal bioclimatic conditions fell within specific ranges: a temperature range of 18-25°C, relative humidity between 32-48%, and a wind speed of 1.25 – 2.75 m/s. Ten classes were generated based on bioclimatic suitability. The areas characterized by almost unsuitable bioclimatic comfort cover are 426 km² and 2.93%, less suitable areas encompass 9106 km² and 62.69%, and moderately suitable bioclimatic comfort areas span 4993 km² and 34.38%.
Predicting Binge Eating Disorder Using Machine Learning Methods
Authors: Akyol Serel , Bayramoğlu Ayşegül
Published: October 2024

Eating disorders are enduring conditions characterized by elevated rates of mortality and morbidity, presenting a serious threat to life. Among these disorders, binge eating disorder is the most prevalent. Therefore, it is an important health problem that often results in obesity worldwide. This study was conducted to evaluate the eating attitudes and behaviors of university students and predict binge eating disorder using machine learning methods. The study was carried out on 306 individuals (117 males, 189 females). Individuals' personal characteristics were questioned with the questionnaire form. The Bulimic Investigatory Test Edinburgh (BITE) test was used to determine whether individuals taking part in the study had binge eating disorder. In this study, in which binge eating disorder was classified, different artificial neural network models were created by changing the basic parameters, and the optimum model was assessed accordingly. Among the models created with different layers and activation functions, the optimum results were obtained using the number of fully connected layers as 2, first and second layers' sizes as 10, and ReLU, a non-linear activation function, in the Bilayered Neural Network structure. This study is the first trial in which binge eating disorder is predicted using machine learning methods, and we believe that machine learning is an important tool to help researchers and clinicians diagnose, prevent, and treat eating disorders at an early stage.
Intrusion Detection System Application with Machine Learning
Authors: Hacıbeyoglu Mehmet , Arıcı Ferda Nur , Karaaltun Muhammed
Published: October 2024

Information security holds paramount importance for organizations and users alike, safeguarding against unauthorized access to sensitive data. Daily usage of the internet amplifies the importance of security measures and the detection of malicious activities. Cyber-attacks, as these malicious activities are commonly known, are continually evolving with advancements in hardware, software, and complex network algorithms. Intrusion Detection Systems play a crucial role in shielding data and information from cyberattacks. The rapid progression in machine learning and deep learning, two popular methodologies in data mining, has found applications in various fields, including security. This study focuses on the use of machine learning and deep learning methods to design an intelligent intrusion detection system. For the development of this smart intrusion detection system, two well-established datasets, NSL-KDD and Kyoto 2006+, were employed. Machine learning methods were implemented utilizing the classification algorithms available in the WEKA data mining tool. The results obtained from these classification algorithms were compared with the deep learning model designed within the scope of the study. Consequently, a detailed analysis of machine learning and deep learning methods on the NSL-KDD and Kyoto 2006+ datasets for an intelligent intrusion detection system was conducted, and suggestions were proposed for further research endeavors.
S,S'-bis(2-piridinil)-2,2'-ditiyosalisiltiyoat Bileşiğinin Demir (III) İyonu ile Kompleksleşme Özelliklerinin in Silico İncelenmesi
Authors: Çalışır Ümit , Çiçek Baki
Published: October 2024

S,S’-bis(2-piridinil)-2,2’-ditiyosalisiltiyoat bileşiği disülfit bağı içeren kükürtlü bileşiklerdendir. Ayrıca bileşikte tiyoester grupları mevcuttur. S,S’-bis(2-piridinil)-2,2’-ditiyosalisiltiyoat bileşiğinin sıvı-sıvı iyon çiftleri ekstraksiyonu ile belirlenen ekstraksiyon sabitleri ve sonuçlarına göre Fe3+ iyonuna yüksek afinite gösterdiği (% Ext.: 98.02)literatürde verilmektedir. Bu bileşiğin ve yüksek oranda oluşturduğu demir (III) kompleksinin, bu çalışma kapsamında yük dağılımı, bağ uzunlukları, elektrostatik dağılım haritaları, enerji parametreleri ve moleküler orbitalleri HyperChem programı ile hesaplanmıştır. Bileşiğin ve demir (III) kompleksinin en kararlı yapılarının belirlenmesi oluşan kompleksin oluşumuna dair enerji parametrelerinin belirlenmesi gerçekleştirilmiştir. Elde edilen veriler ışığında oluşan demir (III) kompleksinin daha düşük enerjiye sahip olduğu, iyonlaşma potansiyelinin daha düşük olduğu ve LUMO-HOMO elektron boşluğunun daha düşük olduğu tespit edilmiştir.
Digital-Based Learning in Lagging Area: Students' Problems and Expectations
Authors: Swandi Ahmad , Fauzan Arief , Arsyad Susalti Nur , Rahmadhanningsih Sri
Published: October 2024

Digital-based learning required by the government since the Covid-19 pandemic in early 2020 until mid-2022 is not fully implemented by teachers and students in lagging area. There are several problems and challenges faced by students in digital-based learning. This study aims to identify the causes of not implementing digital-based learning in the lagging area and analyze the expectations of students. This study was conducted by using quantitative methods. Data were obtained by giving questionnaires, conducting observations and interviews and then analyzed and explained narratively. The results of this study reveal that limited facilities and infrastructure, frequent power outages, limited internet access, there are still many students who do not have laptops and smart devices and lack of responsibility, understanding and teacher skills are obstacles for students in utilizing digital media. Students expect the government's attention to improve facilities, digital literacy of teachers and students and teacher professionalism. In addition, they also want teachers to be more creative in carrying out classroom learning such as the use of various digital media, learning videos, and various online learning technologies.
Determinant Factors of Forming Individual Tacit’s Knowledge: Teachers’ Experience Perspective
Authors: Dewi Laksmi , Setiawan Budi , Hernawan Asep Herry , Sukirman Dadang , Khoirunnisa Azizah Nurul , Arwan Juwintar Febriani
Published: October 2024

This study explores the factors influencing the exchange of tacit knowledge among teachers, which supports creativity, learning, and problem-solving in education. It focuses on how individual knowledge and the sharing of tacit knowledge are interconnected. The research examines four key factors: teaching experience (including education level and attitude), length of service, socialization, and training, and attitudes toward the Freedom of Learning Curriculum. A quantitative survey method was used to collect data from 123 vocational high school teachers between June 21-23, 2023. The participants were asked to complete an online questionnaire about their background and attitudes toward curriculum changes. Descriptive and inferential statistical analyses were applied to the data. The results show that teachers' experience-based knowledge is a crucial factor in acquiring and sharing tacit knowledge, which fosters human connections and collaboration. The findings also reveal that teachers' personal experiences and interactions play a key role in the exchange of unspoken knowledge, leading to improved relationships between teachers and students and expanding their social networks.
Az infláció helyzete Magyarországon : Válasz Botos Katalin „Infláció és pénzügyeink” és Ábel István – Bognár Gergely – Lóga Máté – Szabó István Attila „Változások az infláció magyarázatában” tanulmányára
Authors: Varga József , Sipiczki Zoltán
Published: October 2024

A cikk a 2022–2023 évi inflációt alakító tényezőket vizsgálja. Arra keressük a választ, hogy magyar gazdaságban miért nőtt erőteljesebben az infláció, mint a környező, hasonló szerkezetű országokban. Cikkünkben ezekre a hatásokra szeretnénk rávilágítani, és javaslatokkal szolgálni a gazdaságpolitikai döntéshozók számára egy ellenállóbb inflációs politika kialakításához. Tanulmányunkban először reagálunk Botos Katalin inflációs nézeteire, majd néhány inflációs globális trendet vizsgálunk. Tanulmányunkban kiemelt szerepet szántunk az agrárterület inflációjának elemzésére. Eredményeink alapján a globális költségtolta inflációs nyomás trendek mellett több országspecifikus tényező emelte a hazai inflációs mutatót. Az energiaárak nagymértékben megemelkedtek, a keleti beszállítói láncok egy része megszakadt. A hazai kevésbé termelékeny, ugyanakkor energiaigényes élelmiszeriparra az energiaársokk a környező országokhoz képest magasabb 2022–2023 árfolyam ingadozási tényezőkkel együtt rövid- és középtávon nagyon erős hatást gyakorol, és jelentős eltéréseket mutat a hosszú távú egyensúlytól. Véleményünk szerint az élelmiszer önellátás fokozása mellett kiemelt figyelmet kell szentelni a mezőgazdasági beszállítói lánc hazai fejlesztésére is.
Assessment of Digital Marketing Management in Companies
Authors: Kolodnik T. D.
Published: October 2024

An assessment of digital marketing management in the work of companies was carried out – namely, the compliance of internal resources with the mechanisms of digital transformation in marketing. The approach to the digital transformation of marketing systems and the principles of digital marketing management are considered. It is noted that digital marketing management is inseparable from the continuous process of developing the functions of the marketing system. The stages are proposed, on the basis of which a methodology for calculating the marketing management index in the work of companies is developed in order to analyze the digital marketing methods. It is proposed to divide the performance indicators of digital marketing communications into strategic, analytical and operational, and combine them into the classes in accordance with the methods. Based on the results of the assessment of digital marketing management, it is concluded that the theoretical basis for the economic success of many companies is the professional flexibility of top management specialists and marketing departments.
Evasão escolar: problema que persevera na educação
Authors: Corrêa dos Reis Marielza , Corrêa dos Reis Maia Mariele
Published: October 2024

A evasão é um dos problemas recorrentes no ensino. Fazendo vistas a esse pressuposto, o presente trabalho teve como objetivo reconhecer os principais motivos que levam os alunos a essa evasão, assim como estimular o interesse pelos estudos da graduação em Engenharia Civil. As atividades foram realizadas por alunos da disciplina Atividade de Extensão do 7º período do curso de Engenharia Civil da Universidade Estadual de Minas Gerais (UEMG), campus Passos, com foco em escolas onde a maior concentração de alunos é de baixa ou média renda salarial no município de Passos/MG. O método empregado incluiu a apresentação de projetos e maquetes do curso de graduação por meio de palestras, acompanhados pela aplicação de um questionário para coleta de dados sobre tendência à evasão do público-alvo da atividade.  Os resultados obtidos culminaram na realização de um evento que promoveu a difusão da aplicação de conhecimentos e teorias relacionados à Engenharia Civil e pesquisa de dados diagnósticos que permitem a construção de estratégias de combate à evasão escolar local. Identificou-se reação positiva por parte dos estudantes, sugerindo que iniciativas desse tipo têm potencial para desempenhar um papel significativo no estímulo à capacitação e ao desenvolvimento de profissionais éticos, com impacto social e relevância no mercado de trabalho e na progressão educacional.
Scanning glass microelectrode technique for investigating temperature-dependent electrical properties
Authors: Kishimoto Tatsunori , Ando Toi , Doi Kentaro
Published: October 2024

Recent progresses in ionic current analyses related to micro- and nano-object sensing, electrochemical sensors, and liquid pollution monitoring have attracted significant attention. Micro- and nanoscale sensors with high spatial resolution and high signal-to-noise ratios are also effective for obtaining detailed understanding of ion transport phenomena. We have developed a glass microelectrode technique for measuring the electrical potential distribution by scanning through liquids. It enables us to directly evaluate electrical properties with a spatial resolution equal to the glass tip diameter, which is less than 1 μm. Herein, we optimize the channel and cell structures for the analysis of temperature-dependent properties, which allows us to measure the temperature dependence of conductivity and viscosity in the range of 303–333 K based on the Stokes–Einstein relation. The proposed method, which directly measures the spatial distribution of electrical potential, is suitable for analyzing conductivity, viscosity, and concentration without preprocessing calibration.
Working Towards Mitigating New Risks in the Digital Era: The Role of Human Resource Management in the Achievement of Sustainable Development Goals (SDGs)
Authors: Jarrar Walaa , Barrena Jesus , Jose Foncubierta Maria , Al- Hyari Hadeel
Published: October 2024

خلفية الدراسة: في الوقت الحاضر، يغيّر العصر الرّقمي طرق فهم المجتمع، ويخلق مزايا جديدة، ولكن أيضًا هناك مخاطر جديدة يجب أخذها بعين الاعتبار، إذ يجب على إدارة الموارد البشرية فحص هذا النموذج الجديد، كونه ضروريًّا للبحث واستكشاف الروابط بين التطورات الرّقمية مثل (الذكاء الاصطناعي وغيره)، وذلك من أجل محاولة تخفيف المخاطر الاجتماعية والنفسية لخلق بيئات صحية ومسؤولة للموظفين في العمل.
الأهداف: تهدف هذه الورقة البحثية مناقشة مساهمة الذكاء الاصطناعي في مكان العمل، بالإضافة إلى فوائده أو مخاطره على صحة الموظف، فضلًا عن فهم دور الموارد البشرية  في المساعدة، وفهم كيف تتم معالجة مخاطر الرّقمنة في المنظّمات. تهدف الورقة إلى شرح كيف يمكن أن تُسهم إدارة الموارد البشرية من خلال القيام بذلك في امتثال المنظّمات للاستدامة وتحديدًا المساهمة في أهداف التنمية المستدامة.  و تركّزهذه الدراسة على هدفيْن بشكل مباشر: الهدف المتعلق بالصحة والرفاهية، والهدف المتعلق بتعزيز ظروف العمل اللائق من قبل الشركات.
الطرق المستخدمة: الاعتماد على الدراسات السابقة.
النتائج: تقدّم هذه الدراسة مساهمة نظرية لاستكشاف هذه الفجوة، في محاولة لتوضيح الدور الجديد الذي تلعبه إدارة الموارد البشرية في الرّقمنة وارتباطها بأهداف التنمية المستدامة.
التوصيات: سيتم تقديم الاستنتاجات ومناقشة خطوط البحث المستقبلية في هذه الورقة.
الالتزام القانوني بالممارسات المستدامة
Authors: مجوج إنتصار
Published: October 2024

خلفية الدراسة ومشكلتها: لقيت التنمية المستدامة اهتمامًا دوليًّا واسعًا، انعكس على الاهتمام بها وطنيًّا، والذي تجسد في الجزائر في شكل التزام قانوني بالممارسات المستدامة، الذي أقرّه  الدستوري الجزائري، بوصف هذا الأخير القانون الأساسي في الدولة الذي تستمد منه الحقوق والحريات مشروعيتها، كما صدرت عدة قوانين تحدد آليات تجسيده عمليًّا، و في مجال ريادة الأعمال  تكتسي الاستدامة أهمية خاصة؛ إذ تلعب الأعمال دورًا جوهريًّا في تحقيقها، ذلك أنّ نجاح الأعمال أصبح يقترن بالقدرة على خلق التوازن بين تحقيق العوائد المالية والمسؤولية البيئية والاجتماعية، أي زيادة الربح المادي عن طريق الالتزام بتلبية احتياجات بيئية واجتماعية، مما يجعل الاستدامة غاية ووسيلة في الوقت نفسه.
الأهداف: تهدف هذه الدراسة توضيح الإطار القانوني الذي يستمد منه الالتزام بالممارسات المستدامة مشروعيته، واستنباط أهم الممارسات المستدامة التي يجب الالتزام بها في بيئة الأعمال من أجل المساهمة الفعّالة في التنمية المستدامة.
الطرق المستخدمة: تعتمد الدراسة على المنهج الوصفي والمنهج الاستنباطي وذلك بغرض الإحاطة بالإطار التشريعي المنظّم للممارسات المستدامة كالتزام قانوني في بيئة الأعمال واستنباط الأحكام والنتائج ذات الصلة.
النتائج: لقد تبيّن من خلال الدراسة أنّه بالرغم من أهمية النصوص القانونية المحددة للإطار التشريعي للممارسات المستدامة؛ إلا أنّه فعليًّا مازالت بيئة الأعمال في التجربة الوطنية غير منخرطة  بشكل فعّال في تنفيذ  التزامها القانوني بالممارسات المستدامة.
الاستنتاجات (التوصيات والمساهمة): تستنتج الباحثة أنّه بات ضروريًّا التدخل لتقييم الوضع والعمل على إيجاد الحلول الملائمة.
Pengaruh Kualitas Produk dan Harga terhadap Minat Beli Ulang Konsumen Hand and Body Lotion Marina di Kota Bandung
Authors: Septi Salsabila Putri , Nurtjahjadi Edi
Published: October 2024

Purpose: This study aims to analyze the effect of product quality and price on consumer repurchase intention of Marina hand and body lotion in Bandung City.
Research methodology: This study used a quantitative approach with an online questionnaire survey method. Data analysis included multiple regression using SPSS version 25.
Results: The results showed that product quality and price partially had a positive and significant effect on repurchase intention.
Limitations: This study used 100 respondents who had used Marina's hand and body lotion products with a limited research focus only in the city of Bandung.
Contribution: The findings of this study can contribute to further research and can be used as a basis for consideration in Marina company decision making to keep consumers buying back products by increasing product quality and price.
Novelty: Testing the effect of product quality and price on repurchase intention in research subjects who had used Marina's hand and body lotion products, with the majority of student respondents living in Bandung as the locus of research.
Volatilitas Nilai Tukar dan Harga Komoditas Global selama Krisis Laut Merah
Authors: Agustina Agustina , Barus Andreani Caroline , Firza Syafira Ulya , Halim Fandi , Br Ginting Litka Tiadoraria
Published: October 2024

Purpose: This study aims to determine the most suitable model for assessing the volatility of currency exchange rates for Indonesia, Malaysia, and Singapore, as well as global commodity prices, specifically gold and crude oil.
Methodology: The research was conducted by performing various tests using the SPSS version 25 application, followed by a volatility analysis employing the GARCH method with the E-Views version 9 application.
Results: The study reveals that the Red Sea crisis significantly impacts global investment volatility. The EGARCH(1,1) model best describes the volatility of USD/IDR, USD/SGD, and crude oil prices, while the GJR-GARCH(1,1) model is most suitable for USD/MYR, and the GARCH(1,1) model fits gold price volatility.
Limitations: This study is limited by its focus on only three countries (Indonesia, Malaysia, and Singapore) and two commodities (gold and crude oil). Additionally, the analysis only covers the period following the first attack in the Red Sea crisis.
Contribution: This research provides valuable insights for decision-makers and investors by highlighting the impact of global events on market volatility.
Struktur Modal, Rasio Aktivitas, dan Ukuran Perusahaan terhadap Harga Saham Sektor Pertambangan yang Terdaftar di Jakarta Islamic Index
Authors: Fitria Zahrotul , Sukardi Agung Slamet
Published: October 2024

Purpose: This study aims to determine the influence of capital structure, activity ratio, and firm size on the stock prices of the mining sector listed on the Jakarta Islamic Index (JII).
Methodology: The population of this study comprises mining sector companies listed on the Jakarta Islamic Index in 2019-2023. A purposive sampling technique was used.
Results: The results of this study show that capital structure has no effect on stock prices, activity ratio has a positive and significant effect on stock prices, and company size has a negative and significant effect on stock prices.
Limitations: This study used limited data for the 2019-2023 period, the results may not apply for different periods. The research sample is focused on mining sector companies; therefore, the results cannot be generalized to all companies or industries. This study does not consider macroeconomic or other factors.
Contribution: This research is expected to provide a clear view of how mining sector companies can optimize stock prices in the capital market.
Analysis of the Implementation of As-Salam Contract in White Garlic Purchase Transactions between Retailers and Distributors: Case Study White Garlic Industry Supply Chain in Medan City
Authors: Siregar Choirussonya Putri Amini , Anggraini Tuti , Harahap Muhammad Ikhsan
Published: October 2024

Purpose: This study aims to analyze the application of the As Salam contract in the purchasing system of garlic between retail traders and importers in Medan, Indonesia.
Research Methodology: The research utilizes a qualitative approach, employing observation and structured interviews with key participants in the garlic trading industry. The instruments include interview guides and observational checklists to gather detailed insights into the contract negotiation and execution process.
Results: The findings indicate that the trading practice involves detailed contract agreements, including specific terms on quantity, quality, and delivery schedules. The principles of the As Salam contract are strictly adhered to, ensuring clarity and minimizing the potential for disputes. Prepayment is an integral part of the contract, facilitating efficient stock planning and delivery logistics.
Limitations: The study is limited to the garlic trade within the Medan region, which may restrict the broader applicability of the findings to other commodities or regions.
Contribution: This research contributes to the discipline of Islamic economics by providing practical insights into the implementation of As Salam contracts in commodity trading, offering a model for ensuring fairness and transparency in accordance with Islamic law.
Pengaruh Economic Value Added , Market Value Added, dan Kebijakan Dividen terhadap Nilai Perusahan
Authors: Azizah Fara , Sulistyowati Erna
Published: October 2024

Purpose:  The current study aims to envestigate the influence of Economic Value Added (EVA), Market Value Added (MVA), and dividend policy on the value of enterprises classified as LQ45 that were publicly listed on the Indonesia Stock Exchange from 2020 to 2022.  The study encompasses a dependent variable, Firm Value, alongside independent variables comprising Economic Value Added (EVA), Market Value Added (MVA), and dividend policy.
Methodology: Quantitative research is what this study is all about. Information gathered from stock prices and yearly reports utilizing documentation methodologies. Twenty businesses were chosen the Purposive Sampling technique. Multiple Linear Regression in SPSS Version 27 was employed to examine in data.
Results: Findings demonstrated that EVA has no influence on company value, but MVA has a large positive effect on firm value, and dividend policy has a massive positive effect on firm value. Meanwhile, the EVA, MVA, and Dividend Policy have a major beneficial influence on the firm's worth.
Limitations: One of its drawbacks is the limited three-year analysis time; perhaps, future researchers will be able to employ a longer study period.
Contribution: The study's findings may help businesses and investors weigh EVA, MVA and dividend policy factors when making choices.
Disclosure decisions and non-binding guidance. Court intervention in the Channel Islands
Authors: Newman Mathew , Lyne Sandie , Warrilow Fay
Published: October 2024

The author’s view
Disclosure from a trustee to non-beneficiaries should be considered carefully by a court and should be no wider than disclosure to beneficiaries would be. The court’s supervisory jurisdiction over trustees extends to giving non-binding guidance on a particular momentous decision that trustee is considering making, but that guidance does not have to be followed and does not stand as intervention by the court in the administration of the trust. 
Tesi
La divulgazione di informazioni da parte di un trustee a persone non beneficiarie deve essere valutata con attenzione da un tribunale e non deve essere più ampia di quanto lo sarebbe la divulgazione ai beneficiari. La giurisdizione di supervisione del tribunale sui trustee si estende a fornire indicazioni non vincolanti su una particolare decisione importante che il trustee sta considerando di prendere, ma tali indicazioni non devono essere seguite e non costituiscono un intervento del tribunale nell’amministrazione del trust.
Penerapan Metode Field Trip Observation untuk Meningkatkan Wawasan Siswa di MTs Muhammadiyah 10 Gresik
Authors: Nabil Wildan , Rossidy Imron
Published: October 2024

The aim of this research is to examine the implementation of the field trip observation method in the learning process of students, focusing on their ability to adapt and modify themselves in their surroundings, and to identify the strengths and weaknesses of this method. This qualitative study employs ethnographic or field research methodology, with teachers and students under observation as the primary data sources. Secondary data sources include school profile information, field trip destination observation data, and observations of field trip learning strategies. Data collection techniques involve documentation, interviews, and observations. Data analysis proceeds incrementally, leading to conclusions. Findings indicate that using field trip observation methods enhances students' insights, exposes them to new experiences, and alleviates boredom associated with classroom learning. However, this method requires thorough planning and significant financial resources to implement effectively.
Pengembangan Media Pembelajaran Video Avatar Berbasis Artificial Intellegence (AI) bagi Peserta Didik Tingkat Pendidikan Dasar
Authors: Azfar Fani , Sutiah Sutiah
Published: October 2024

This article reviews the development of artificial intelligence-based avatar video learning media products for elementary-level students. Researchers used the ADDIE R & D model method to develop the media product in its implementation. By the flow of the ADDIE model itself, researchers go through several stages such as analysis, design, development, implementation, and evaluation. This research study shows that the use of products resulting from the development of artificial intelligence-based avatar video media is very suitable for elementary-level students. This is proven by the fact that the product has accommodated the two learning styles, namely auditory and visual so that with the basic nature of students who tend to imagine and are easily interested in concrete things, students become enthusiastic in learning activities.
Pengaruh Penggunaan Media Flashcard terhadap Hasil Belajar Peserta Didik pada Mata Pelajaran Pendidikan Agama Islam
Authors: Zaidane A Muhammad , Alfurqan Alfurqan
Published: October 2024

This exploration was roused by the absence of educator advancement in the utilization of learning media, particularly in Islamic Strict Schooling subjects. It is strongly suspected that this is a factor in students' low learning achievement. This exploration expects to look at the effect of involving cheat sheet media as an imaginative option in working on the nature of learning and at last decidedly affecting understudy scholastic accomplishment. This exploration utilizes a quantitative strategy with a semi exploratory methodology, to test variable x which includes the utilization of cheat sheet media and variable y likewise applies to understudy learning results. A purposive sampling method was used to sample the entire 54-student population. The software SPSS 26 was used to analyze the obtained data. The consequences of measurable investigation utilizing the free example t-test showed an importance worth of 0.001, which is far underneath the importance level of 0.05. This demonstrates that there is an extremely huge distinction between the normal scholastic scores of understudies in classes that utilization cheat sheet media (trial class) and classes that don't utilize cheat sheet media (control class). Based on these findings, it can be concluded that students who use flashcard materials achieve significantly higher learning outcomes.
Efektivitas Penerapan Model Pembelajaran Problem-Based Learning dalam Pendidikan Agama Islam Siswa SMAN 10 Batanghari
Authors: Fitrisia Rosi , Nurmadiah Nurmadiah
Published: October 2024

This study evaluates the effectiveness of implementing the Problem-Based Learning (PBL) method in Islamic Religious Education (PAI) teaching for 10th-grade students at SMAN 10 Batanghari. The primary goal of this research is to enhance students' understanding, engagement, and collaboration skills through a more interactive and contextual approach. Data were collected through in-depth interviews, participatory observations, and document analysis, and analyzed using thematic analysis techniques. The results indicate that the application of the PBL method positively impacts students' understanding of PAI material, particularly on the topic "Avoiding Free Association to Protect Human Dignity and Honor." Furthermore, this method also increases student engagement and motivation, as well as strengthens their collaboration and communication skills. However, the study also identifies several challenges, including students' difficulties in time management and independent information-seeking, as well as limited access to technology and resources. These findings suggest that to maximize the effectiveness of PBL, additional teacher training and adequate resource provision are required. This research makes a significant contribution to the development of more effective and relevant PAI teaching strategies that meet current students' needs.
A IMPORTÂNCIA DO CONTROLE ADUANEIRO NO TRANSPORTE INTERNACIONAL
Authors: Albuquerque Renata Martinez Galdão de
Published: October 2024

O presente trabalho investiga a evolução da administração aduaneira no Brasil, analisando o modelo de controle adotado e como ele equilibra a facilitação das operações lícitas com a segurança contra infrações, principalmente no combate aos crimes transnacionais, como o tráfico de drogas e armas. O principal objetivo do estudo é avaliar a atuação da Aduana brasileira no enfrentamento desses crimes, identificar possíveis fragilidades nas operações e propor melhorias que possam aumentar a eficácia do controle aduaneiro. O estudo também examina como o gerenciamento de riscos adotado pela Aduana permite a agilização das operações de fiscalização, contribuindo para o desenvolvimento do comércio exterior, ao mesmo tempo em que assegura a correta arrecadação tributária e previne infrações cada vez mais sofisticadas, considerando as amplas fronteiras terrestres e marítimas do país. Ademais, este trabalho aborda o impacto da Lei 10.637/02, com foco no artigo 28, que impõe obrigações às empresas de transporte aéreo e marítimo para fornecer informações detalhadas sobre passageiros e tripulantes. A legislação visa otimizar a fiscalização aduaneira e prevenir a entrada de substâncias ilícitas ou de indivíduos não autorizados no território nacional. A pesquisa identifica oportunidades de melhoria na eficácia desse controle e discute como esses aprimoramentos podem fortalecer a segurança pública e a proteção das fronteiras brasileiras. Por fim, o estudo contribui para o debate acadêmico sobre o papel da Aduana na segurança nacional e oferece propostas concretas para que o sistema aduaneiro se torne mais eficiente no combate aos crimes transnacionais, colaborando tanto com a sociedade quanto com a academia.
Psychometric properties of self-report instruments for assessing self-care in patients with oncological diseases: protocol for a COSMIN-based systematic review
Authors: Amato Carla , Iovino Paolo , Magi Camilla Elena , Longobucco Yari , El Aoufy Khadija , Bambi Stefano , Rasero Laura
Published: October 2024

Background: The topic of self-care in cancer has garnered increased attention from researchers and clinicians over the years. This has prompted the development and testing of several instruments to capture the multidimensional nature of the self-care construct in cancer patients. Several self-report instruments are available in the literature; however, which instrument exhibits the best reliability and validity remains unclear.Objective: The aim of this protocol is to identify all available instruments developed for measuring self-care behaviors in adult cancer patients and critically appraise their psychometric properties.Methods: This systematic review will follow the COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) guidelines. PubMed, CINAHL, Embase, Scopus, Web of Science, and PsycINFO databases will be searched for relevant articles on the topic. Studies testing the psychometric properties of self-report instruments assessing self-care behaviors in adult cancer patients, published in English, Italian, or Spanish, will be included. Two independent reviewers will assess the eligibility of the studies and extract the data. Risk of bias will be evaluated using the COSMIN Risk of Bias Checklist, and the quality of the results will be assessed based on specific COSMIN criteria.Conclusion: A thorough and critical evaluation of all available evidence for instruments measuring self-care in patients with cancer might have both strong clinical and research implications. The results of this review could drive healthcare providers in the selection of the most appropriate assessment tool for detecting and monitoring the self-care levels of this population. On the other hand, the results may underline the necessity of validating new instruments.
Pengaruh Nickel-Chrome Plating Terhadap Kekerasan Mikro, Kekasaran Permukaan Dan Keausan Pada Hasil Produk Pengecoran Aluminium Bekas (Scrap)
Authors: Rohi Jemssy Ronald , Bistolen Boy , Lopo Elkana B , Pinto Gaspar M P , Hanmina Marsianus M F
Published: October 2024

Pada proses penuangan aluminium, produk coran yang dihasilkan masih memiliki cacat yang berdampak pada kualitas sifat mekanis. Sehingga perlu dilakukan pengerjaan akhir dengan cara elektrolisa menggunakan nikel-krom. Penelitian ini bertujuan untuk mengetahui pengaruh pelapisan nikel-krom pada hasil produk pengecoran aluminium bekas dengan tegangan listrik 5, 7,5, 9 volt dan waktu 5, 10, 15 detik. Berdasarkan hasil pengujian menunjukan nilai kekerasan pada tegangan listrik 5 dan 7,5 volt dengan waktu 5, 10, 15 detik, serta pada tegangan listrik 9 volt dengan waktu 5 detik masih dalam daerah kekerasan nickel sedangkan pada tegangan listrik 9 volt dengan waktu 10 dan 15 detik sudah dalam daerah kekerasan chrome. Dalam pengujian kekasaran permukaan pada Pada waktu 5 detik terjadi penurunan sebesar 39,36%, waktu 10 detik terjadi penurunan sebesar 49,70% dan waktu 15 detik terjadi penurunan sebesar 63,90%. Dari hasil tersebut menunjukan tingkat kekasaran nickel-chrome plating sudah berada pada daerah kekasaran permukaan pengerjaan akhir atau finishing. Nilai keausan tertinggi ada pada waktu 5 detik dengan tegangan 5 volt yaitu 9,86E-07 mm2/kg. Nilai keausan terendah ada pada waktu 15 detik dengan tegangan 9 volt yaitu 2,213E-07 mm2/kg, Oleh karena itu, diketahui bahwa nickel-chrome plating meningkatkan ketahanan aus dari material yang dilapisi.
Penggunaan dan Analisis Panel Surya Lepas Pantai Menggunakan Pipa Apung sebagai Media Apung
Authors: Nanda Rizki Aulia , Gumelar Agung , Mulyadi Dodi
Published: October 2024

Pemanfaatan sumber energi cahaya matahari menjadi salah satu energi alternatif untuk menghemat energi fosil. Penggunaan solar panel sudah banyak di implementasikan baik di rumah, gedung dan lapangan terbuka. Oleh karena itu sumber energi terbanyak berada dipantai, karena kawasan pantai memiliki daerah tanpa halangan cahaya matahari. Dengan latar belakang demikian, penelitian ini bertujuan untuk membuat alat Solar Panel lepas pantai. Metode yang digunakan adalah dengan meninjau studi literatur, pembuatan solar panel lepas pantai, dan pengujian dipantai dan analisis data. Hasil pengujian yaitu hasil dari data rata rata daya terhadap waktu (jam) dapat dilihat dimana perubahan daya berpengaruh terhadap (Wh) yang dihasilkan. Nilai terendah sebesar 9,3679 Wh dan nilai menegah sebesar 23 Wh dan nilai terbesar 26 Wh. Jenis baterai yang digunakan adalah FLA (Flooded Lead Acid) dengan kapasitas dan 12V arus 5 Ah.
Pengembangan Alat Monitoring Suhu Multisensor Berbasis Mikrokontroler
Authors: Efendi Rustam , Tando Arjal , Padang Welly , Aries Mulhin , Herlina Herlina
Published: October 2024

Penelitian ini mengembangkan sebuah prototipe data logger suhu berbasis Arduino Mega 2560 yang menggunakan satu sensor Adafruit MCP9808 dan lima amplifier termokopel Adafruit MAX31856. Desain data logger ini memungkinkan pengukuran suhu dalam berbagai aplikasi, dengan fokus pada pemantauan suhu ruangan. Prototipe ini dapat digunakan dalam praktikum, penelitian, dan aplikasi industri yang memerlukan pemantauan suhu yang akurat. Data logger suhu ini memiliki potensi aplikasi yang luas dalam berbagai konteks, dengan keunggulan dalam fleksibilitas dan biaya yang terjangkau. Penelitian ini memvalidasi bahwa sensor Adafruit MCP9808 dan Adafruit amplifier MAX31856 memiliki tingkat akurasi yang tinggi dalam pengukuran suhu. Hasil pengukuran suhu ruangan menunjukkan suhu sekitar 29 ℃. Desain data logger ini menjadi alternatif yang kuat bagi peneliti yang memiliki keterbatasan dalam pengadaan data logger standar hasil pabrikan. Prototipe ini memiliki potensi untuk menjadi alat yang sangat berguna dalam eksperimen dan penelitian ilmiah di berbagai aplikasi yang memerlukan pemantauan suhu yang akurat.
Modeling Muscle Activities of Squat Motion using OpenSIM
Authors: Mihradi Sandro , Ferryanto Ferryanto , Harjanto Samuel J.
Published: October 2024

Human beings need to be able to monitor their muscle health. Muscle health can be assessed by directly measuring its signal using an electromyography sensor or, recently, from a musculoskeletal modeling software such as OpenSIM. OpenSIM is an open-source platform for modeling, simulating, and analyzing the neuromusculoskeletal system. This work aims to simulate muscle forces during squat movement using OpenSIM simulation and validate the results using electromyography sensors attached to the body. The squat movement data generated from the optical motion capture system and the force plate will be used as inputs for the OpenSIM software. OpenSIM can provide output, such as a graph of the working muscle forces. That graph will be compared and analyzed with a surface electromyography sensor results graph. Based on the analysis results, the chart of working muscle forces generated by the OpenSIM software has shown a similar trend to the graph of muscle activity resulting from surface electromyography sensor reading. Therefore, the simulation results from the OpenSIM software were validated, and it was implied that the data collection process and the modeling were done correctly.
Optimizing Hot Embossing of Poly(methyl methacrylate) Microfluidic Chip
Authors: Whulanza Yudan , Dhira Pandya , Haryadi Deni , Soemardi Tresna P.
Published: October 2024

Microfluidic research become a more important research field in mechanical and bioengineering fields. The application of microfluidic positively relates to the ability to manufacture micro or precision. Nowadays, the manufacturing in this area is aimed at around 100-500 µm. Here, a hot embossing method is reported to realize microchannel with height and width dimensions of 150-300 µm and 600-800 µm, respectively. This study also shows that the margin factor between the mould/dies to the realized dimension is 50-70% and 5-7% for height and width, respectively.