bluuebunny/crossref_metadata_2025_split huggingface dataset:
Indeks Kerentanan Wilayah Pesisir Kecamatan Galesong Kabupaten Takalar
Authors: Rachman Taufiqur , Arifki Muhammad Alif Alim 
Published: January 2024

Permasalahan di wilayah pesisir sangat sensitif dan rentan terhadap fenomena alam karena merupakan suatu wilayah yang rentan terhadap faktor lingkungan antara lain laju perubahan garis pantai, kemiringan pantai, gelombang, pasang surut dan kenaikan muka air laut. Analisis penentuan kerentanan wilayah pesisir dapat dilakukan dengan penilaian terhadap kondisi fisik daerah pesisir. Penilaian tingkat kerentanan pesisir pada penelitian ini menggunakan metode CVI (Coastal Vulnerability Index). Penelitian ini bertujuan untuk mengetahui tingkat kerentanan pesisir Kecamatan Galesong dan menentukan solusi atas tingkat kerentanan pesisir Kecamatan Galesong. Pada penelitian ini dilakukan studi dokumenter, yaitu menyaring dan menganalisis data sekunder dari berbagai aplikasi, web dan jurnal yang relevan dengan penelitian ini serta dilakukan survei lapangan secara langsung untuk mengetahui kondisi eksisting terkait fenomena yang ada. Tingkat kerentanan pesisir Kecamatan Galesong menggunakan metode CVI berada di satu kategori yaitu kerentanan tinggi. Terdapat lima desa yang ada di kawasan pesisir Kecamatan Galesong yaitu Desa Palalakkang, Desa Galesong Baru, Desa Galesong Kota, Desa Boddia dan Desa Mappakalompo. Solusi yang dapat dilakukan untuk mengatasi masalah kerentanan kawasan pesisir Kecamatan Galesong yaitu dengan melakukan penataan pemukiman/fasilitas umum, memodifikasi bangunan pelindung pantai yang telah ada dan membangun struktur pelindung pantai. Struktur pelindung yang disarankan untuk dibangun adalah revetment dan detached breakwater.
Optimasi Kualitas Pembubutan Aluminium 6061 Akibat Perubahan Sudut Potong Pahat HSS
Authors: Aminy Ahmad Yusran , Aji Angga Asteriasti 
Published: January 2024

Sejalan dengan perkembangan ilmu pengetahuan dan teknologi, suatu hasil produksi harus di imbangi dengan peningkatan kualitas hasil produksi, khususnya pada proses permesinan. Aluminium 6061 adalah paduan aluminium yang mengandung magnesium, silikon dan banyak digunakan pada komponen pesawat dan otomotif dimana dibutuhkan tingkat kekasaran yang rendah. Kekasaran sangat bergantung dari jenis pahat dan geometri pahat. Pada penelitian ini digunakan pahat HSS (High Speed Steel) dengan variasi pemotongan yaitu: variasi sudut potong (Kr) dipilih 65o, 75o, 85o dan 90o, putaran spindel (n) 200 rpm, 400 rpm, 600 rpm, pemakanan (f) 0.15 mm/put; 0,17 mm/put; 0.3 mm/put dan kedalaman pemakanan (a) 1 mm. Setelah dilakukan pembubutan setiap satu set variabel permesinan dilakukan pengukuran kekasaran dengan menggunakan mesin Laser 3D Measuring Laser Microscope OLS4100. Data pengukuran yang diperoleh digrafikkan dengan hubungan varibel permesinan dengan kekasaran dan untuk memperoleh kondisi optimal dilakukan analisis dengan menggunakan Metode Taguchi. Tujuan penelitian ini adalah untuk mengetahui kualitas pembubutan Aluminium 6061 terhadap perubahan sudut potong pahat. Dari hasil analisis didapatkan Sudut potong (Kr) yang paling optimal adalah 65° dengan nilai kekasaran 0,341 µm.
Kata Kunci : Proses Permesinan, Bubut, Aluminium 6061, Pahat HSS, Geometri Pahat.
PENINGKATAN KEPERCAYAAN DIRI (SELF-EFFICACY) DAN MOTIVASI SISWA MELALUI MODEL DISKUSI DI SMP N 1 MLATI
Authors: Hayu Wiworo 
Published: January 2024

Penelitian ini bertujuan untuk mengetahui peningkatan kepercayaan diri (self-efficacy) dan motivasi siswa melalui penerapan pembelajaran bermakna menggunakan model diskusi.
Penelitian dilakukan di SMP N 1 Mlati. Subjek penelitian ini adalah siswa kelas VIIB. Jenis penelitian yang digunakan adalah Penelitian Tindakan Kelas (PTK) dengan pengkajian berdaur (siklus) model Spiral Kemmis dan Taggart yaitu perencanaan (planning), tindakan (acting) dan pengamatan (observing), serta refleksi (reflecting). Teknik pengumpulan data peningkatan kepercayaan diri (self-efficacy) diukur dengan angket, peningkatan motivasi siswa diukur dengan angket dan lembar observasi digunakan untuk keterlaksanaan proses meningkatkan kepercayaan diri (self-efficacy) dan motivasi siswa. Teknik analisis data yang digunakan adalah deskriptif kualitatif dan kuantitatif.
Hasil penelitian menunjukkan bahwa cara meningkatkan kepercayaan diri (self-efficacy) dan motivasi siswa, yaitu (1) establishing set: membahas maksud diskusi dan membagi siswa dalam 6 kelompok; (2) memfokuskan diskusi: menegaskan diskusi dengan kelompoknya, pertanyaan awal tentang masalah di sekitar, masalah yang disajikan berkaitan dengan kehidupan sehari-hari, pemfokusan diskusi yang baik; (3) mengendalikan diskusi: memfasilitasi diskusi dengan pertanyaan, membimbing diskusi setiap kelompok, merespon ide, tegas awal hingga akhir, mencatat hasil diskusi di papan tulis dengan jelas; (4) mengakhiri diskusi: meriview, merangkum dan menyimpulkan diskusi bersama siswa dan menulis di papan tulis, dan (5) debriefing: menanyakan pendapat siswa tentang jalanya diskusi, kesempatan berpartisipasi, menghargai ide orang lain dan kesulitan diskusi. Siswa sudah mencapai indikator keberhasilan kepercayaan diri (self-efficacy) dengan semua siswa (100%) memiliki kepercayaan diri tinggi. Siswa sudah mencapai indikator keberhasilan motivasi dengan semua siswa (100%) memiliki motivasi tinggi.
INFLUENCE OF TRIHYDROPERFLUORAL ALCOHOLS ON CHANGES IN THE CHARACTERISTICS OF FLUOROPLASTIC CONTAINING PYROTECHNIC COMPOSITIONS
Authors: Жуков Е.Е. , Ильясов С.Г. , Ильясов Д.С. 
Published: January 2024

Актуальной задачей на сегодняшний день является расширение компонентой базы при создании новых или модернизации известных рецептур высокоэнергетических составов. Известно, что одним из перспективных многофункциональных типов соединений при создании высокоэнергетических составов является фторкаучук. Однако из-за своей особенности растворения и пластификации в ограниченном числе соединений его применимость в качестве компонента таких составов ограничена. В статье описывается использование a,a,ω–тригидоперфторспиртов в качестве пластификатора фторкаучуков. Показано, что при введении данных соединений происходит изменение свойств изначального полимера, так ИК-спектороскония образцов показала образование новых пиков не характерных исходному веществу, а результаты TGA и DSC демонстрируют смещение пиков плавления и разложения. Кроме того, в работе представлены результаты исследования влияния тригидроперфторспиртов на изменение характеристик фторопластосодержащих пиротехнических составов. Полученные данные проведенных теоретических расчетов в программном комплексе REAL показали увеличение энергетических характеристик пиротехнических составов с введением тригидроперфторспиртов различных марок. Наличие тригидроперфторспиртов в рецептуре фторопластосодержащих пиротехнических составов приводит к увеличению скорости их горения. Отмечается, что скорость горения увеличивается с увеличением тетрафторэтиленовых групп в соединении.
An urgent task today is to expand the component base when creating new or modernizing known formulations of high-energy compositions. It is known that one of the promising multifunctional types of compounds when creating high-energy compounds is fluorine rubber. However, due to its ability to dissolve and plasticize in a limited number of compounds, its applicability as a component of such compositions is limited. The article describes the use of a,a,ω –trihydroperfluoroalcohols as a plasticizer for fluororubbers. It has been shown that when these compounds are introduced, the properties of the original polymer change, so IR spectroscopy of the samples showed the formation of new peaks not characteristic of the original substance, and the TGA and DSC results demonstrate a shift in the melting and decomposition peaks. In addition, the paper presents the results of a study of the influence of trihydroperfluoroalcohols on changes in the characteristics of fluoroplastic-containing pyrotechnic compositions. The obtained data from theoretical calculations carried out in the REAL software package showed an increase in the energy characteristics of pyrotechnic compositions with the introduction of trihydroperfluoroalcohols of various grades. The presence of trihydroperfluoroalcohols in the formulation of fluoroplastic-containing pyrotechnic compositions leads to an increase in their combustion rate. It is noted that the burning rate increases with increasing tetrafluoroethylene groups in the compound.
DEVELOPMENT OF AN EXPERIMENTAL DEVICE FOR DISPERSING POWDERS IN AN AQUEOUS MEDIUM FROM AN INITIALLY COMPACTED STATE
Authors: Муравлев Е.В. , Титова Н.В. , Конюхов И.Е. , Антонникова А.А. 
Published: January 2024

Во многих практических приложениях необходимо порционно вводить мелкодисперсные порошки импульсными методами распыления в водную среду, например, в водородной энергетике для получения электричества. При этом контролируется полнота реагирования мелкодисперсного порошка с водной средой. Целью работы является исследование процессов импульсного диспергирования компактированных порошков в водной среде для получения равномерного распределения порошка в гидрозоле. Порошки, предварительно компактированные на прессовом оборудовании, импульсным ударным методом распылялись до начальной дисперсности или близкой к ней. Экспериментальные исследования дисперсности гидрозолей проводились с помощью оптического анализатора частиц.
In many practical applications, it is necessary to introduce fine powders in portions by pulsed spraying methods into an aqueous medium, for example, in hydrogen energy to generate electricity. At the same time, the completeness of the reaction of the fine powder with an aqueous medium is controlled. The aim of the work is to study the processes of pulsed dispersion of compacted powders in an aqueous medium to obtain a uniform distribution of powder in a hydrosole. Powders pre-compacted on pressing equipment were pulsed by the impact method to an initial dispersion or close to it. Experimental studies of the dispersion of hydrosols were carried out using an optical particle analyzer.
METHOD FOR OBTAINING 2-NITRO-1,3-BIS(4,4'-DIHYDROXYMETHYL)-1,2,3-TRIAZOLYL-2-AZAPROPANE FROM 1,3-DICHLORO-2-NITRO-2-AZAPROPANE
Authors: Шестакова Е.О. , Ильясов С.Г. 
Published: January 2024

В статье предложен способ получения 2-нитро-1,3-бис(4,4'-дигидроксиметил)-1,2,3-триазолил-2-азапропана (2-НДГМТАП) из прекурсора 1,3-диазидо-2-нитро-2-азапропана (DANP) – 1,3-дихлор-2-нитро-2-азапропана. Исследованный метод позволяет проводить реакцию азид-алкинового циклоприсоединения DANP к пропаргиловому спирту без выделения высокочувствительного азидоалкилнитрамина в чистом виде, а использовать образующийся после реакции азидирования 5÷6 %-ный раствор DANP в хлористом метилене, что обеспечивает безопасность метода и выход целевого продукта 70 %. Перекристаллизацией 2-НДГМТАП из смеси растворителей ацетон/вода (10:0,5) увеличена чистота продукта с 98,5 % до 99,9 %. Структура 2-НДГМТАП подтверждена рентгеноструктурным анализом.The article proposes a method for the preparation of 2-nitro-1,3-bis(4,4'-dihydroxymethyl)-1,2,3-triazolyl-2-azapropane (2-NDHMTAP) from the 1,3-diazido-2-nitro-2-azapropane (DANP) precursor 1,3-dichloro-2-nitro-2-azapropane. The studied method makes it possible to carry out the azide-alkyne cycloaddition reaction of DANP to propargyl alcohol without isolating the highly sensitive azidoalkylnitramine in pure form, and to use a 5÷6 % solution of DANP in methylene chloride formed after the azidation reaction, which ensures the safety of the method and the yield of the target product is 70 %. Recrystallization of 2-NDHMTAP from a mixture of acetone/water solvents (10:0.5) increased the purity of the product from 98.5 % to 99.9 %. The structure of 2-NDHMTAP was confirmed by X-ray diffraction analysis.
Dividend Payout Ratio and Factors Affecting Food and Beverage Companies on the IDX
Authors: Widyakto Adhi , Prapti Lulus , Triyani Dian 
Published: January 2024

<p><em>Effect of Debt to Equity Ratio on Dividend Payout Ratio Sourced in table 2, the t-statistic has a value of -2,641372 which is smaller than t-table 2 009, so that the t-statistic located in the Ha area is accepted. Not only that, it is supported by a probability value (p-value) of 0.0114 which is smaller than an alpha of 0.05. Thus, it can be concluded that the Debt to Equity Ratio (DER) affects the Dividend Payout Ratio (DPR) in the dining zone. and beverages listed on the IDX for the 2017-2020 period. This result is in line with Rindasari's previous research (2018). However, this result does not match the research conducted by Samrotun (2015) which states that the Debt to Equity Ratio has a positive effect on the dividend payout ratio. But it is different from the research conducted by Yurinawati and Andayani (2017) which shows that the Current Ratio does not affect the Dividend Payout Ratio.</em></p><p><em> </em></p><p><em>Based on the results of the analysis and review, with illustrations of 10 food and beverage industries listed on the Indonesia Impact Exchange (IDX) in 2017-2020, as follows: Return on Assets, Current Ratio does not affect, but Debt to Equity Ratio, Firm Dimensions affect the dividend payout ratio.</em></p>
The Intention to Participate in Voluntary Social Insurance of Informal Sector Workers: the Case in Mekong Delta, Vietnam
Authors: Cong Chanh Nguyen , Hong Ha Nguyen , Phi Ho Dinh 
Published: January 2024

Purpose: The objective of this study is to develop the participation of informal sector workers in voluntary social insurance to ensure the Social Security policy of the Government of Vietnam.

Theoretical Framework: Based on the results compiled from expert as: Kotler, 2003; Schiffman and Kanuk, 2007; Ming-Chi Lee, 2009; Holmgren et al., 2016 and Krajaechun and Praditbatuga, 2019. The model was preliminarily designed by the author through eight prefix variables including: Confidence in Benefits, Evaluation of Social Responses, Perception of risks, Beliefs, Motivation, Attitude towards Voluntary social insurance, Subjective norms, and Intention to participate in Voluntary social insurance.

Methodology: This study employs primary data from a survey of 370 people working in informal workers in 04 province of the Mekong Delta region of Vietnam: Kien Giang Province, Tra Vinh Province, Hau Giang Province and Soc Trang Province. The Authors using Partial Least Squares-Structural Equation Modeling (PLS-SEM) and Bootstrap analysis in the SEM reliability test employed for data analysis and interpretation.

Findings: Research results show that two factors that affect the intention to participate in voluntary social insurance of workers in the informal sector: Attitude towards social insurance and subjective norms.

Solutions: From the research results, the authors have proposed solutions to further improve the participation in voluntary social insurance of workers in the informal sector in the Mekong Delta, Vietnam in future.
Measurement the Producting Efficiency and Marketing Efficiency of Okra Crop (Covered) in Baghdad Governorate for the Season 2022
Authors: Alwardi Hawraa Jaafar Mohammed , Ali Suaad Hussien , Al-Majeed Amena Tariq Abd 
Published: January 2024

Purpose: The aim of the research is to estimate the production and marketing efficiency of okra under the protected agriculture system and to identify the most important production and marketing problems.

Theoretical Framework: The least squares method OLS was used to estimate the parameters of the short-term
cost function using the statistical program SSPS, and the short-term cubic cost function was adopted.

Design/Methodology: Data were collected through a questionnaire form for a random sample of 62 farmers of the covered okra crop in Baghdad Governorate (Mahmoudiya District) for the season 2022-2023, to measure the production and marketing efficiency of okra under the protected agriculture system.

Findings: There is economic efficiency in the production of okra, the ratio of return to costs is greater than one, while the production costs function indicated that the crop does not achieve the required level of efficiency, as the optimal volume of production was about 12.22 tons. the average production volume of the selected sample was about 4.3 tons, and the estimated results also indicated that the total cost about 23350570 ID, and the marketing efficiency of the crop about 85%.

Practical and Social Effects: The study benefits okra farmers through knowledge of the optimal use of available resources, i.e. the production of the largest amount of goods and services using the elements of production available, exploiting the resources available to it to produce goods and services that specialize in its production, farmers achieve marketing efficiency through maximizing the ratio between outputs and inputs.

Value or Origin: The agricultural sector in Iraq is of great importance among other economic sectors. Meanwhile, it faces many challenges, including population increase, limited land and water resources, inefficient use of available resources, and lack of the seasonality of agricultural production coincides with the periods required for consumption, which makes the transition to protected agriculture necessary to increase agricultural production as one of the means of agricultural intensification to increase agricultural production to meet the increased demand for crops. Therefore., studying marketing efficiency is one of the important studies, as it is the main factor for continuing to deal in the production and of any crop or not.
Financial Performance: Cases From Hong Kong-Listed Company
Authors: Yiwei Liu 
Published: January 2024

Purpose: The purpose of this study is to preliminarily explore the financial performance of Hong Kong listed companies in recent years, so that the public can have a preliminary understanding of the operating conditions of Hong Kong companies in recent years.

Theoretical Framework: Financial performance is whether a business strategy and its implementation and execution are contributing to the ultimate business performance. Financial performance can fully express the effect of cost control, the effect of asset utilization and management, the effect of capital allocation, and the composition of the return on shareholders' equity. Financial performance is mainly reflected in four aspects: profitability, operating ability, solvency and growth ability.

Design/Methodology/Approach: We randomly obtained the annual financial reports of 17 listed companies from 2016 to 2021 from the official website of the Hong Kong Stock Exchange. And based on the financial data disclosed in the financial reports of each company, it makes a detailed calculation, analysis and comparison of the profitability, solvency, operating capability and growth capability of each company.

Findings: In recent years, the profitability and operational capabilities of listed companies in Hong Kong have been stable without major fluctuations, but there is still a slight downward trend. The solvency performance is good, and the source of capital flow is relatively reliable. At the same time, the financial performance of listed companies in Hong Kong has also been significantly negatively affected by the spread of the covid-19 pandemic.

Research, Practical & Social Implications: We suggest that in the future, listed companies in Hong Kong should improve their business strategies in a targeted manner to resist the impact of the new crown pandemic and the outside world on business operations.

Originality/Value: The profitability and operating capacity of Hong Kong-listed companies remained stable without much fluctuation, but there was still a slight downward trend. The financial performance of Hong Kong-listed companies has also been significantly negatively affected by the spread of the Covid-19 pandemic.
Development of CIRCSA-Based E-module on Virus Materials to Train Students' Critical Thinking and Scientific Literacy
Authors: Irmasari Eliyan , Marianti Aditya , Martuti Nana Kariada Tri , Riawan Awinda Sari 
Published: January 2024

Developing technology-based teaching materials, such as e-modules, is an effective method for training students' thinking abilities, such as critical thinking and scientific literacy. Objective: This research aims to assess the characteristics, feasibility, and students’ responses to developing an e-module of viral material based on the CIRCSA learning model. Method: The ADDIE development framework, including analysis, design, and development, was used to conduct this research. The scope of this research is limited to assessing the feasibility of the CIRCSA-based e-module characteristics, materials, media, and students’ responses on small-scall trials. Results: Data analysis revealed that the CIRCSA-based e-module that integrates critical thinking and scientific literacy achieved an very valid criterion. The feasibility of materials and media obtained a very valid category. Additionally, students' responses to the e-module usage resulted in a very good category. Novelty: Developing CIRCSA-based e-modules to improve students' critical thinking and scientific literacy has never been done before.
Effectiveness Test Digital Assessment based Moodle as a Digital Assessment Instrument for Measuring Science Literacy Skills for Junior High School Students
Authors: Permatasari Annisaa Dwi Ayu , Handayani Rif'ati Dina , Siswati Bea Hana , Bachtiar Ahmad Adam 
Published: January 2024

Objective: This study aims to test the effectiveness of Moodle-based Digital Assessment as an assessment instrument to measure scientific literacy possessed by junior high school students in Jember and Probolinggo, Indonesia especially on environmental pollution. Method: This type of research is development research with a 4D model that Defined, Designed, Developed, and Disseminated. The data analysis technique used descriptive analysis and calculation of scientific literacy.
Result: For the results small-scale trial, most students were in the high category. The results of the large-scale test for junior high school in Jember, Indonesia show most students in the medium category. The results of the large-scale test for junior high school in Probolinggo, Indonesia show most students in the high category. The results of this study prove Digital Assessment developed is very effective for measuring the scientific literacy of junior high school students, especially regarding environmental pollution. Novelty: Researchers have never previously conducted research that developed a Moodle-based Digital Assessment to measure the scientific literacy skills of junior high school students.