bluuebunny/crossref_metadata_2025_split huggingface dataset:
Глобальные решения и решения с обострением для нелинейной диффузионной системы с источником и нелинейными граничными условиями
Authors: Alimov A.A. , Rakhmonov Z.R. 
Published: July 2023

In this paper, we study the global solvability and unsolvability of a nonlinear diffusion system with nonlinear boundary conditions in the case of slow diffusion. The conditions for the global existence of the solution in time and the unsolvability of the solution of the diffusion problem in a homogeneous medium are found on the basis of comparison principle and self-similar analysis. We obtain the critical exponent of the Fujita type and the critical global existence exponent, which plays an important role in the study of the qualitative properties of nonlinear models of reaction-diffusion, heat transfer, filtration and other physical, chemical, biological processes. In the global solvability case the principal terms of the asymptotic of solutions are obtained. It is well known that iterative methods require the presence of a suitable initial approximation, resulting in a rapid convergence to the exact solution and preserving qualitative properties of nonlinear processes under study, it is a major challenge for the numerical solution of nonlinear problems. This difficulty, depending on the value of the numerical parameters of the equation is overcome by a successful choice of initial approximations, which are mainly in the calculations suggested taking asymptotic formula.
В данной работе изучается глобальная разрешимость и неразрешимость одной нелинейной системы диффузии c нелинейными граничными условиями в случае медленной диффузии. Найдены условия глобального существования решения по времени и неразрешимости решения нелинейной задачи диффузии в однородной среде на основе автомодельного анализа и метода сравнения решений. Получены критическая экспонента типа Фуджита, и критическая экспонента глобального существования решения по времени, играющих важную роль при исследованиях качественных свойств нелинейных моделей реакции – диффузии, теплопроводности, фильтрации и других физических, химических, биологических процессов. В случае глобальной разрешимости получен главный член асимптотики автомодельных решений. Известно, что итерационные методы требуют наличия подходящего начального приближения, приводящее быстрой сходимости к точному решению и сохраняющие качественные свойства изучаемых нелинейных процессов, это является основной трудностью для численного решения нелинейных задач. Эта трудность в зависимости от значения числовых параметров нелинейной системы диффузии с нелинейными граничными условиями преодолевается путем удачного выбора начальных приближений, в качестве которых при вычислениях предложено брать полученные асимптотические формулы.
Pause (Mafsāl) Analysis Using Audio Praat Application in Shaikh Dr. Malik Husain Sya'ban's Lecture
Authors: Al Usman Semaun , Thonthowi Thonthowi , Musthofa Tulus 
Published: July 2023

Language is one of the important aspects of the key to understanding the specific goals and purposes used by people around the world, language as a tool serves as a significant communication tool developing in human civilization. this is evidenced by many types of supporting applications, the Praat program which can change sound waves that previously could only be heard now become visible to the human eye. In addition, the Praat program, is equipped with a device to see the tone motion, the magnitude of the pause, the length of the utterance, all of which are needed to determine the inaccuracy of an utterance or the error of the utterance. This study discusses the analysis of the lectures of Shaykh Dr. Malik Husain Sya'ban based on the theory of mafsal pause in Ulumu al-lughohwiyah. The purpose and objective of this study is to determine the intonation of the pauses of these expressions. To answer these problems, in this study using qualitative descriptive analysis techniques in analyzing the results of observations made, then transcribed and then analyzed and data taken from the observations of researchers in the lectures of Shaykh Dr. Malik Husain Sya'ban.
Implementation of Group Exchange Learning Model in The Subject Muthala’ah at Madrasah Aliyah Al-Umm Malang
Authors: Fikri Naufal , Muasshomah Muasshomah , Safari Muhammad , Fajri Shafrul 
Published: July 2023

The aim of this study is to reveal the application of the learning model "Group of Group Exchange" in the subject "Muthala'ah" at Madrasah Aliyah Al-Umm Malang and express the impressions of students by using the learning model "Group of Group Exchange" to make students active and increase in learning Arabic. This research uses field research with a qualitative descriptive type, and researchers also use three methods to collect data, namely: observation, interviews, and written documents. The results showed that (1) The use of the "Group of Group Exchange" learning model in the "Muthala'ah" subject at Madrasah Aliyah Al-Umm Malang: made students more active because during class students discussed and presented learning outcomes. Group discussion on four topics namely think before you decide, cleanliness, stingy people and take your chances. (2) There is an increase in class interest in understanding reading material, and makes students more enthusiastic during the learning process, as well as the emergence of interaction, effort, and participation between students in understanding the text distributed by the teacher during the learning process in class.
Arabic Behaviour: Escalation of Ability to Speak Arabic
Authors: Khuryati Ainil , Ardinal Eva , Alamin Nurul 
Published: July 2023

Arabic is essential for supporting learning, such as accessing Arab library materials or communicating. Arabic language education is in great demand for students. However, the problem in the field is that many students have difficulty understanding learning. Students experience difficulties speaking Arabic because they do not master the vocabulary, and it is challenging to pronounce Arabic words. This article offers a solution to escalating the ability to speak Arabic through forming Arabic behavior. The research method used is library research. Research is sourced from library data such as journal articles, books, and websites. The study results show that Arabic behavior can be created with the existence of Arabic language learning institutions because Arabic language institutions have a critical role in accelerating the ability to speak Arabic and supporting education. Then the learning modules are adapted to the students' ability level because it will help them absorb information more efficiently and effectively and improve their speaking skills in Arabic more quickly. The next is to associate with people with the same interest in learning Arabic, and the last is to practice speaking Arabic.
The Model of Developing Arabic Language Skills at Daarul Ukhuwwah Islamic Boarding School Malang
Authors: Ghufron Boby , Nurhadi Nurhadi , Mustofa Syaiful , Aziz Moch. Fikri Abdul 
Published: July 2023

The success of learning Arabic in Islamic boarding school can be measured by the number of students who are able to speak Arabic and have four Arabic skills. The learning model in Daarul Ukhuwwah Islamic boarding school is seen as effective in developing students' language skills. Therefore, it is necessary to carry out research related to the development model of Arabic language learning in Daarul Ukhuwwah Islamic boarding school. The purpose of this research is to determine the model of developing Arabic language skills in Daarul Ukhuwwah Islamic boarding school. The method used is a descriptive qualitative method. The research data includes primary data in the form of core data from the research location, and secondary data in the form of documentation. Research data collection techniques use observation, interviews, and documentation. The process of analyzing research data includes data reduction, data presentation, and conclusion making. The results showed that Daarul Ukhuwwah Islamic boarding school uses the imigram model in designing and implementing language agendas that are useful for developing the four Arabic language skills of its students. The model seeks to provide a balance between Arabic practice and theory. This research can be used as an example of an innovative model of developing Arabic language skills.
Jogos em aulas de Matemática: uma prática pedagógica extensionista na formação inicial de professores
Authors: Broch Siomara Cristina , Clemente Lima Lavinia , Cavalheiro de Oliveira Regina 
Published: July 2023

Este artigo apresenta e reflete sobre uma prática de ensino desenvolvida com acadêmicos do Curso de Licenciatura em Matemática numa atividade pedagógica de extensão na comunidade escolar. Durante as aulas na Instituição de Educação Superior, os acadêmicos utilizaram materiais recicláveis e fizeram reuso de diferentes objetos para construírem jogos que fossem utilizados em aulas da disciplina de Matemática no Ensino Fundamental. Fizeram ficha com regras e características de cada jogo, bem como estudaram e analisaram habilidades e estratégias utilizadas durante o desenvolvimento dos jogos. No final do semestre, os acadêmicos foram até uma escola desenvolver os jogos com alunos de 6º e 7º anos na aula de Matemática. A utilização de jogos nas aulas é um recurso pedagógico que mostra bons resultados, pois torna a aula mais dinâmica e interativa, fazendo com que os alunos tenham mais interesse e sintam prazer no desenvolvimento de habilidades matemáticas. Também possibilita que os alunos desenvolvam métodos de raciocínio e resolução de problemas e estimulem a sua criatividade. O foco destas ações pedagógicas é a experiência do acadêmico com a atuação docente na realidade educacional regional, numa ação de parceria e trocas de aprendizagens na escola, com vistas a mais ampla formação inicial dos futuros professores e a contribuição da melhoria da qualidade do ensino da Matemática. Portanto, são atividades que integram o ensino e a extensão no currículo de formação inicial dos novos professores.
Evaluation of Current and Post-Development Carrying Capacity of Tigris River Reach in Mayssan Province
Authors: Qawmee Al-Naemi Maysam , Rashid Al-Juhaishi Mohammed 
Published: July 2023

The study aims to evaluate the current flood carrying capacity and its change after some cross sections developments for the 110 km reach of Tigris River and Kmait flood escape system. This reach extends from Ali Al-Gharbi station to Amarah Barrage station. The model is calibrated by using set of data at the Ali Al-Garbi gaging station, that includes flow varied between 790 to 470 m3/s during April 2019. Manning’s n coefficient value of (0.03) is selected as it has the minimum least-squares root difference of (0.148) between the measured and estimated water levels. The results show that the current capacity of Kmait flood escape and this Tigris River reach are 280 m3/s and 1100 m3/s, respectively. According to the study of strategic for water and land resources in Iraq, 2014, scenarios are conducted for some cross sections development to improve the capacity of the reach to 2750 m3/s. Results of applied development show that Tigris River can safely accommodate a flood wave of 2750 m3/s when modifying the cross-sections in different locations, and raising the banks level in three locations, 0+00, 79+00 and 95+00km. Earthworks volume of development of the reach is 247603200 million m³, with the total cost of 490 billion IQD.
Enhancement of Hot Mix Asphalt stability by utilizing Cement Kiln Dust and Styrene-Butadiene-Styrene Polymer
Authors: F. Abbas Hiader , H. Abed Alaa 
Published: July 2023

Utilization of additives can be an effective way to improve the durability and performance of HMA, making them more resistant to Moisture and deformation. Plus, they can reduce the need for maintenance and repairs, saving you time and money in the long run. In this study, CKD was used in place of limestone as a filler in the asphalt mixture in proportions of 0%, 25%, 50%, 75%, and 100%, and polymer SBS 4%by weight of asphalt. According to the findings, replacement-content CKD had the highest asphalt content. When the CKD is between 25% and 50%, Stability, Flow, and Indirect Tensile Strength are improved, while the density of the asphalt mixture decreases and the amount of air voids increases at higher ratios. While SBS leads to an increase in the hardness of the adhesives. As a consequence, the stability of the SBS-containing mixes resulted in higher values than the control and additive-containing mixtures (CKD), as well as a decrease in the number of air voids. According to the results, CKD should not constitute more than half of the filler weight in the asphalt mixture.
Sustainability of Microfinance Institutions: An Analysis of Influencing Factors in South Sumatra Province
Authors: Hidayat Ariodillah , Suhel Suhel , Mardalena Mardalena 
Published: July 2023

Microfinance has become an important tool for poverty alleviation in many countries and the Indonesian government through various intervention programs to overcome poverty has also implemented microfinance programs in Indonesia, one of which is through the Kota Tanpa Kumuh (Kotaku) Program. This study aims to analyze the factors that affect the sustainability of the Financial Management Unit (UPK) Microfinance Institutions (MFI) operating in South Sumatra Province. The purpose of this study is to gain a better understanding of these factors and their sustainability so that they can provide recommendations to stakeholders at both the central and regional levels. The data collection method was used by surveying 50 samples of the UPK Community Self-Reliance Agency (BKM) spread across three cities, namely Palembang City, Prabumulih City and Lubuk linggau City which is the largest city there are UPK BKM microfinance institutions from 7 cities and districts intervened in the Province South Sumatra. The analytical method in this study uses logistic regression to analyze data using descriptive qualitative analysis to explain the factors that influence the sustainability of UPK BKM Microfinance Institutions (MFI) in South Sumatra Province. The results showed that the factors that had a significant effect on the level of sustainability of MFI were BKM support and portfolios at risk.
Integrasi Value Stream Mapping dengan Simulasi Kejadian Diskrit: Studi Kasus Lean Distribution
Authors: Rakhmasari Aster Aryati , Dharmayanti Indrani 
Published: July 2023

Lonjakan permintaan produk pasca pandemi menyebabkan tidak tercapainya pemenuhan order sesuai dengan yang ditargetkan perusahaan. Berbagai upaya dilakukan PT X Indonesia untuk meningkatkan produktivitas dan kinerja perusahaan, diantaranya adalah dengan melakukan perampingan proses untuk meningkatkan efisiensi. Hasil observasi dengan menggunakan metode VSM memperlihatkan masih terdapatnya pemborosan dalam proses distribusi baik dalam hal waktu tunggu staf yang memakan waktu hingga proses, gerakan, dan atau transportasi yang tidak tepat/diperlukan. Perbaikan yang dilakukan sebagai luaran hasil analisis dapat memangkas pemborosan pada aktivitas pengiriman yaitu waiting, inappropriate processing, unnecessary motion dan transport­tation, hingga mengurangi waktu siklus sebesar 30%, namun hal tersebut belum dapat menjawab permasalahan target pemenuhan Purchase Order (PO). Simulasi kejadian diskrit dilakukan dengan beberapa skenario yang mengintegrasikan data proses distribusi perusahaan sehingga dapat terlihat waktu siklus keseluruhan produk yang sesuai dengan target pemenuhan PO. Hasil simulasi memperlihatkan bahwa skenario 3 yaitu melalui pengintegrasian proses 1 dan 2 (membuat invoice packing list dan dokumen pengiriman), sistem pembayaran pajak secara online, dan penambahan mesin produksi sebesar 25% dapat memberikan kinerja yang lebih baik, ditunjukkan dengan waktu tunggu PO, waktu tunggu karyawan dan waktu produksi yang paling pendek yaitu sebesar 9.47 jam. Kombinasi metode Value Stream Mapping (VSM) dengan Discrete Event Simulation (DES) mampu memperlihatkan hasil perbaikan secara terintegrasi, sehingga permasalah­an pemenuhan PO dapat diselesaikan secara efisien dan efektif.
Analisis Kadar Vitamin C Pada Buah Jeruk Nipis (Citrus aurantifolia Swing.) dan Jeruk Manis (Citrus sinensis) menggunakan Titrasi Iodometri
Authors: Ariani Farida , Muhsin Lalu Busyairi 
Published: July 2023

Vitamin merupakan golongan senyawa organik yang memiliki peran sangat penting untuk pertumbuhan, pemeliharaan kesehatan, dan fungsi-fungsi tubuh lainnya agar metabolisme berjalan normal. Terdapat banyak sekali vitamin baik yang berasal dari alam maupun yang disintesis di laboratorium. Salah satunya adalah vitamin C, penelitian ini bertujuan untuk Menentukan kadar vitamin C (asam askorbat) dalam sampel jeruk buah, jeruk nipis dan vitacimin secara titrasi iodimetri, Titrasi redoks adalah titrasi yang melibatkan proses oksidasi dan reduksi. Kedua proses ini selalu terjadi secara bersamaan. Dalam titrasi redoks biasanya menggunakan potensiometri untuk mendeteksi titik akhir. Untuk mengetahui kadar vitamin C metode titrasi redoks yang digunakan adalah titrasi langsung yang menggunakan iodium. Iodium akan mengoksidasi senyawa-senyawa yang mempunyai potensial reduksi yang lebih kecil dibanding iodium, Berdasarkan percobaan yang dilakukan pada uji vitamin c ini dapat disimpulkan bahwa penentuan kadar vitamin C dengan titrasi iodometri dapat dilakukan dengan prinsip reduksi oksidasi. Kadar vitamin C diperoleh dengan titrasi iodometri metode pertama yang dilakukan dengan mengencerkan jeruk, jeruk nipis dan vitamin C sebesar 0,0006%, 0,0006287%, 0,000787%. Pada metode kedua tanpa pengenceran, konsentrasi vitamin C pada jeruk dan jeruk nipis adalah 0,03165%, 0,0 9%.
PLANEJAMENTO FAMILIAR: CONHECIMENTO E APLICABILIDADE POR ENFERMEIROS NA ATENÇÃO PRIMÁRIA À SAÚDE
Authors: Pereira da Silva Monique , De Queiroz Ana Cláudia , Soares Dantas Maria Clara , Oliveira de Sousa Alana Tamar , Marques Nunes Elicarlos 
Published: July 2023

Devido os entraves da gravidez indesejada na adolescência no Brasil, a prática do cuidado familiar é uma atribuição da Equipe de Saúde da Família, assim o Planejamento Familiar é direito da população amparado pela Constituição Federal. A Enfermagem desempenha um papel imprescindível nessa atenção. Objetivou-se compreender o conhecimento dos enfermeiros da Atenção Primária à Saúde sobre o planejamento familiar. Tratou-se de pesquisa exploratória com abordagem qualitativa, desenvolvida no município de Guarabira, Paraíba. A amostra foi composta por enfermeiros que atuam na Estratégia Saúde da Família. Foi utilizado um formulário semiestruturado, para analisado pela técnica de Análise de Conteúdo de Bardin em paralelo com a técnica de saturação. Os resultados foram divididos em quatro categorias: Planejamento familiar e sua operacionalidade, Dificuldades na aplicabilidade do PF, Facilidades na aplicabilidade do PF, Capacitações acerca do planejamento familiar para profissionais de saúde. Reconhece-se a importância de que os gestores de saúde forneçam subsídios para que os profissionais de saúde elaborem estratégias em prol da população, como recursos materiais, recursos humanos, educação permanente.
Experimental Study of the effect of closed cavity wall on buildings cooling loads saving
Authors: Abdul Ghafour Qussai Jihad , Mahmoud Bashar Kamil 
Published: July 2023

The experimental study showed the use of closed cavity wall (the thickness of the cavity 5cm) made a percentage reduction in the cooling load caused by heat gain from the wall by (21.5 %) compared with the conventional wall. also the thermal resistance of the closed cavity was an average (0.2 m2.oC/W).
The experimental results of the study showed that the use of closed cavity wall reduced the average temperature of the inner surface of the wall during the day, and that the reduction was an average (0.45 oC) when compared with the conventional wall , as well as the use of closed cavity wall reduced the temperature difference range of the inner surface of the wall during the day, and that the reduction was an average (0.66 oC) when compared with the conventional wall .
Unit Price and Cost Estimation Equations through Items Percentage of Construction Works in a Desert Area
Authors: Raheem Kadhim 
Published: July 2023

This research will cover different aspects of estimating process of construction work in a desert area. The inherent difficulties which accompany the cost estimating of the construction works in desert environment in a developing country, will stem from the limited information available, resources scarcity, low level of skilled workers, the prevailing severe weather conditions and many others, which definitely don't provide a fair, reliable and accurate estimation. This study tries to present unit price to estimate the cost in preliminary phase of a project. Estimations are supported by developing mathematical equations based on the historical data of maintenance, new construction of managerial and school projects. Meanwhile, the research has determined the percentage of project items, in such a remote environment. Estimation equations suitable for remote areas have been formulated. Moreover, a procedure for unite price calculation is concluded.
Desulfurization of Diesel Fuel by Oxidation and Solvent Extraction
Authors: Mohammed Wadood Taher , Almilly Raghad Fareed Kassim , Al-Ali Sheam Bahjat Abdulkareem 
Published: July 2023

This research presents a study in ultra-desulfurization of diesel fuel produced from conventional hydro desulfurization process, using oxidation and solvent extraction techniques. Dibenzothiophene (DBT) was the organosulfur compound that had been detected in sulfur removal. The oxidation process used hydrogen peroxide as an oxidant and acetic acid as homogeneous catalyst . The solvent extraction process used acetonitrile (ACN) and N-methyl – 2 - pyrrolidone (NMP) as extractants . Also the effect of five parameters (stirring speed :150 , 250 , 350 , and 450) rpm, temperature (30 , 40 , 45 , and 50) oC, oxidant/simulated diesel fuel ratio (0.5 , 0.75 , 1 , and 1.5) , catalyst/oxidant ratio(0.125,0.25,0.5,and0.75) , and solvent/simulated diesel fuel ratio(0.5,0.6,0.75,and1) were examined as well as solvent type. The results exhibit that the highest removal of sulfur is 98.5% using NMP solvent while it is 95.8% for ACN solvent. The set of conditions that show the highest sulfur removal is: stirring speed of 350 rpm , temperature 50oC , oxidant/simulated diesel fuel ratio 1 , catalyst/oxidant ratio 0.5 , solvent/simulated diesel fuel ratio 1. These best conditions were applied upon real diesel fuel (produced from Al-Dora refinery)with 1000 ppm sulfur content . It was found that sulfur removal was 64.4% using ACN solvent and 75% using NMP solvent.