bluuebunny/crossref_metadata_2025_split huggingface dataset:
METHODICAL APPROACH TO ESTIMATING THE POTENTIAL OF THERMAL ENERGY PRODUCTION BY HEAT PUMP PLANTS IN CASE OF THEIR IMPLEMENTATION IN REGIONAL DISTRICT HEATING SYSTEMS
Authors: Derii V.O. , Teslenko O.I. , Sokolovska I.S. 
Published: June 2023

The results of the estimation of the annual potential for thermal energy production using heat pumps (HPs) in district heating systems (DHS) for the regions of Ukraine and the country as a whole are given. This study is relevant due to the high level of DHS development in Ukraine, which reaches 52 %. Today, the outdated equipment of DHSs in Ukraine needs significant technological modernization. Also, in the near future, it will be necessary to restore DHSs destroyed as a result of the total destruction of the civil infrastructure by the russian aggressor. The post-war reconstruction of Ukrainian cities has a unique chance to radically update DHSs using renewable energy sources and innovative technologies, including HPs. The authors propose a new methodical approach for the regional determination of the forecast implementation scope of HPs in DHSs. Using this approach, the economically available energy potential of thermal energy production by HPs in DHSs from various low-potential heat sources (LPHS) was determined, both for the regions of Ukraine and for the country as a whole. As of 2020, this energy potential for DHSs of Ukraine is 62.601 million Gcal/year (262.1 PJ/year): 22.2 % is provided by natural LPHS (heat of air (2.2 %), river water (16.9 %), ground and groundwater (3.1 %)) and 77.8 % is provided by anthropogenic LPHS (heat of ventilation emissions of buildings connected to the DHS (43.0%), sewage water (9.7 %), flue gases from boilers and combined heat power plants (14.3 %), cooling water of technological processes (10.8 %)). The calculated energy potentials for the thermal energy production by HPs from various LPHSs for DHSs of 24 regions of Ukraine are presented also. Information from scientific publications, regulatory documents, annual reports of the State Statistical Service of Ukraine and other government agencies used as the initial data for calculations. Approved methods of heat engineering calculations, methods of statistical and calculation-comparative analysis using Microsoft Excel computer software used to calculate and visualize the results. Methodical recommendations for determining the priority and locations for the implementation of HPs in regional DHSs of Ukraine, which developed by the authors of the article, are presented. Bibl. 48, Fig. 2, Tab. 4.
Investigation of the Effect of Heat Treatment Time in Case of Recrystallization of Al99.5
Authors: Varga Dorottya , Szlancsik Attila 
Published: June 2023

In this study the effect of heat treatment time was investigated in case of recrystallization of Al99.5 material samples. Two different type were manufactured based on the previously applied cold forming. 12% and 24% cold forming was applied to the samples before the heat treatment procedure, which was always at 570 °C and cooled in water. Six different heat treatment time were investigated, namely 5, 10, 30, 60, 120 and 240 minutes. After the recrystallization procedure the microstructure and the mechanical properties were determined. It was found that in the case of the 12% cold formed samples after 30-minute-long heat treatment there were still signs of the original microstructure, however it does not affect the mechanical properties. The yield strength and the ultimate tensile strength were independent of the heat treatment time; they were only dependent on the grain size which was expected. A strong dependency can be discovered between the elongation at break and the heat treatment time. A tangent hyperbolic function was fitted on the measured data, which showed that the asymptote was ~29% for both type of samples. This is a 25% increase compared to the 5-minute-long heat treatment time samples, and this value was reached after ~120 minutes. Another result was that the elongation at break dependency on the grain size is decreasing with increasing heat treatment time.
Praktik Penghindaran Pajak di Indonesia
Authors: Dewi Sari 
Published: June 2023

This study aims to determine the influence of Company Size and Corporate Social Responsibility (CSR) on the level of Tax avoidance in Indonesia. This study is a study with the population of companies listed on the IDX from 2017 to 2020. The sampling technique is Purposive sampling, andthe ata studied is secondary data, which is then tested by Multiple Linear Regression analysis. The Disclosure of Corporate Social Responsibility (CSR) towards Tax Avoidance of Public Companies in Indonesia is a social problem so that in paying taxes according to regulations must be done by the company. The results of the study that CSR does not affect tax avoidance, while company size, leverage and growth affect tax avoidance. Manufacturing enterprises of the consumer goods sector of the year 2017-2020.
A proposed User-Based Approach for eBooks Recommendation Using a Weighted Nearest Neighbor Technique
Authors: Saleh Abdullah Mohammed , Taqa Alaa Yaseen 
Published: June 2023

Large book data stores were beneficial for our support systems but posed significant challenges for useful information retrieval. This issue was resolved by collaboratively filtering data depending on user needs. This study suggested a user-based methodology for recommending eBooks. The selected dataset was pre-processed, and Cross-validation was used to build a user-user similarity matrix. Three nearest neighbor algorithms (KNN Basic, KNN with Means and KNN with ZScore) were used, and weighted KNN was proposed for rating prediction. In this technique, the weight of each user was calculated based on its distance from the intended user. The evaluation process depends on the user-item matrix and user-user matrix for prediction. The proposed recommendation system was tested on the book-crossing dataset, and the results were evaluated using the root mean square error and the mean absolute value of error. The results show that the error rate of the proposed model is the lowest compared to the other methods used, specifically when using the Pearson-Baseline technique. Since the root mean square error is 1.647 and the mean absolute value of errors is 1.253. When using the cosine technique, the root mean square error is 1.742, and the mean absolute value of errors is 1.328.
Leveraging Technology for MSME Development: A Case Study of the Sistem Informasi Hasil Desa (SIHASA) V2 in Banyumas Regency
Authors: Prabowo Wahyu Adi , Putri Tiara Pebriana , Himawan Zidan Yazid 
Published: June 2023

Banyumas Regency in Central Java Province comprises 27 districts and 331 villages, showcasing its vast geographical coverage. Over three years, from 2006 to 2009, the region witnessed a notable increase in small businesses, rising from 643 to 717 establishments. Despite this growth, MSMEs in Banyumas face a prevalent challenge of inadequate information dissemination for effectively promoting their products. To tackle this issue, a proposed solution is the Village Results Information System (SIHASA) V2 website. This website supports village communities, MSMEs, and governments in managing their respective activities and operations. To expedite the creation of the system, the Rapid Application Development (RAD) method is employed, encompassing essential stages such as project requirement determination, prototype creation, development processes, and gathering feedback.
Furthermore, to ensure an efficient system design, the implementation of Unified Modeling Language (UML) is integrated, incorporating crucial components like Use Case Diagrams and Class Diagrams. This meticulous design approach guarantees that the system effectively caters to the community's diverse needs, specifically benefiting the village community in Banyumas Regency in terms of managing village products and facilitating efficient MSME operations. The outcomes of this research endeavor hold significant promise for the community, providing practical tools and resources to enhance their livelihoods and contribute to the overall development of the Banyumas Regency.
Machine Learning to Identify Monkey Pox Disease
Authors: Aldi Febri , Nozomi Irohito , Sentosa Rio Bayu , Junaidi Ahmad 
Published: June 2023

In May 2022, it has received by WHO reports from non-endemic countries on cases of monkey pox disease. Monkey pox is a rare zoonotic disease caused by infection with the monkeypox virus that belongs to the genus orthopoxvirus and the family poxviridae, and also the variola virus. This study aims to classify patients who have contracted the monkey pox virus. We modeled an analysis of monkey pox disease and conducted comparisons utilizing a dataset from Kaggle consisting of a CSV file with records for 25,000 patients. The monkey pox dataset was analyzed using the correlation coefficient and the number of target variables. Machine learning (ML) methods are used for classification by utilizing the K-Nearest Neighbor (KNN), Support Vector Machine (SVM), Random Forest (RF), and Gradient Boosting (GB) algorithms. This study resulted in the highest classifier Gradient Boosting (GB) algorithm with an accuracy value of 71%. then the accuracy obtained by Support Vector Machine (SVM) is 69%, Random Forest (RF) accuracy is 68%, and finally K-Nearest Neighbor (KNN) obtains 63% accuracy. This ML method is expected to analyze monkey pox disease so that it helps the country and government, especially the health field in assessing, identifying, and being able to take appropriate action against monkey pox disease.
USING TECHNOLOGY ACCEPTANCE MODEL TO ANALYSE THE SUCCESSFUL CROWDFUNDING LEARNING GAME CAMPAIGNS
Authors: Huang Hong , Yu Han , Li Wanwan , Ma Jinxuan 
Published: June 2023

Due to the limited opportunities for financial supports to educators, Crowdfunding can be an effective channel to solicit funding sources for educators to develop new learning games. Understanding user perceptions of a successful learning game guided by Technology Acceptance Model (TAM) could help educators to effectively adapt Information Communication Technologies (ICT) in developing more competitive learning games and secure more funding. This study used a user survey to assess the success of Kickstarter-funded learning game projects. Guided by TAM, the study derives eight perceived assessment dimensions, including three Usefulness dimensions: Representation mode, Narrative, Interaction; four Usability dimensions: Learning provision, Skill building, Rules, Assessment; and one Acceptance dimension: Motivation. The analysis of the online assessment survey (n=115) revealed that successful funded learning game projects are focused on usefulness and usability. Users perceived a wider gap between successful and unsuccessful crowdfunding learning games in Learning Provision, Representation Mode, and Skill building. These enable game-based learning strategies by spelling out game rules that support learning provision in skill building, which is reflected in a detailed and in-depth narrative in a coherent representation layout. According to bivariate and multivariate analysis, among all eight dimensions, Representation mode, Interactivity, Skill building, Rules, Narrative and Learning provision are key factors that significantly associate with entrepreneurial success for the learning game development. A crowdfunding learning game TAM based perception evaluation model was developed based on perceived acceptance, usefulness and usability. This study examines the pedagogical aspects of using TAM to analyze crowdfunding learning games to help educators better use ICT to create new learning games that provide more customized, active, and flexible learning experiences, improve feedback and assessment, and increase involvement and access to game development.
Un nuevo impulso a la institucionalización de la evaluación de las políticas públicas en España. Problemas persistentes y retos a futuro
Authors: Andrés Jovani Juan Manuel 
Published: June 2023

Este artículo analiza los retos a los que se enfrenta la institucionalización de la evaluación de las políticas públicas, reforma impulsada en el Plan de Recuperación y comprometida para la recepción de los fondos Next Generation EU, aplicando algunos elementos de la teoría de las instituciones y del análisis de las políticas públicas. Bajo este prisma, se exploran los sucesivos impulsos de institucionalización de la evaluación de las políticas públicas en España, sus factores determinantes y los obstáculos para su efectiva implementación, según los diagnósticos realizados desde dentro y fuera de las Administraciones públicas, y se apuntan a modo de conclusión algunos de los retos y oportunidades que plantea la institucionalización de la evaluación desde la perspectiva parlamentaria.
Se concluye que las carencias y la dispersión de la evaluación de las políticas públicas en España no ha variado significativamente en las últimas dos décadas, a pesar de los sucesivos intentos de regulación de un marco de la evaluación, y que los impulsos más efectivos han tenido lugar sobre la base de una implicación política directa, derivada principalmente de los compromisos de estabilidad presupuestaria con la UE y de revisiones de las sendas de ajuste del déficit condicionadas a revisiones del gasto. Respecto al Parlamento, el nuevo marco de la evaluación plantea retos como la definición de su rol en la arquitectura institucional, la puesta en valor de elementos ya regulados, como las memorias de impacto normativo o el presupuesto por programas, y el refuerzo de sus capacidades técnicas.
EVALUASI KINERJA STRUKTUR BANGUNAN DENGAN METODE PUSHOVER ANALYSIS PADA GEDUNG RUMAH SAKIT STROKE NASIONAL BUKITTINGGI
Authors: Reyani Elvi , Ishak Ishak , Eka Priana Surya 
Published: June 2023

Earthquake phenomena are natural phenomena that greatly affect buildings, especially high-rise buildings. Planning of earthquake-resistant building structures is very important in Indonesia, considering that most of the area is located in earthquake areas with moderate to high intensity. Buildings in earthquake-prone areas must be designed to be able to withstand earthquakes. The latest planning trend is performance based seismic design, which utilizes computer-based non- linear analysis techniques to analyze the inelastic behavior of structures from various ground motion intensities (earthquakes), so that their performance can be known in critical conditions. Further action can be taken if it does not meet the required requirements. The purpose of this study was to determine the pushover analysis procedure to evaluate the performance of the building structure and to determine the pattern of the collapse of the building structure after being analyzed by pushover. This study uses the Static Pushover Analysis method with reference to the displacement coefficient method (FEMA 356, 2000). The lateral load used is the result of an equivalent static analysis which is carried out monotonically in one direction. Research shows that there are several conclusions. First, the displacement of the maximum pushover result (δmax) in the XZ direction, which is in step-7, is greater than the displacement target (δt), with a figure of 61541.4681 mm > 58.212 mm. Second, the displacement of the maximum pushover result (δmax) in the YZ direction, namely in step-5, is greater than the displacement target (δt), with a figure of 10450.54 mm > 58.212 mm. Third, the evaluation in the XZ direction is still safe even though max > t, because all beam elements in the portal appear plastic hinges with levels A-B which are still elastic, all marked in pink. The distribution of plastic hinges that occur at all steps shows that no structural member exceeds the performance limit so that it can be said that the performance of the structural component is in a safe condition. Fourth, the structural members in the YZ direction are also safe because max > t and the plastic hinge distribution scheme shows the structural members marked in pink with levels A-B. Keywords: pushover, non-linear, plastic hinge
ANALISIS SUBSTITUSI AGGREGAT KASAR MENGGUNAKAN LIMBAH KERAMIK TERHADAP KUAT TEKAN BETON
Authors: Fitri Yeni Sari , Is Ishak , Herista Febrimen 
Published: June 2023

Limbah keramik merupakan salah satu limbah yang dihasilkan dari perenovasian rumah maupun gedung di Kota Bukittinggi yang tidak dimanfaatkan. Pemanfaatan kembali limbah keramik menjadi salah satu alternatif yang menguntungkan. Maka perlu dilakukan penelitian dengan memanfaatkan limbah yang selama ini tidak dimanfaatkan menjadi bahan campuran beton. Untuk mengatasi masalah tersebut perlu dilakukan pengolahan limbah keramik menjadi beton sebagai agregat pencampuran beton, guna untuk mengetahui kuat uji tekan beton. Penelitian ini bertujuan Untuk mengetahui pengaruh penggunaan limbah keramik sebagai substitusi aggregat kasar terhadap kuat tekan beton, untuk mengetahui kuat tekan optimal pada substitusi aggregat kasar dengan limbah keramik 2%, 5%, dan 8% dalam campuran beton. Metode yang digunakan dalam penelitian ini yaitu metode kualitatif ( penelitian di labor Universitas Muhammadiyah Sumatera Barat ). Dengan mengganti aggregat kasar menjadi limbah keramik sebanyak 2% menghasilkan kuat tekan 220,44 kg/cm2, 5% menghasilkan kuat tekan 201,70 kg/cm2, dan 8% menghasilkan kuat tekan 228,47 kg/cm2 di umur 28 hari. Yang mana dengan campuran limbah keramik membuat kuat tekannya menurun dari beton normal yang kuat tekannya 251,67 kg/cm2 di umur 28 hari. Tetapi kuat tekan beton normal meningkat dari mutu beton yang direncanakan yaitu K-250 menjadi 251,67 kg/cm2. Kata kunci : aggregat kasar, beton, limbah keramik, kuat tekan, substitusi.
PENGARUH PENGGUNAAN ABU BONGGOL JAGUNG 5%, 7.5% DAN 10% SEBAGAI SUBSTITUSI AGREGAT HALUS TERHADAP KUAT TEKAN BETON f’c 14.53 MPa
Authors: Maharani Siti , Masril Masril , Bastian Elfanian 
Published: June 2023

Beton di Indonesia menjadi hal yang banyak dipilih sebagai bahan konstruksi karena faktor efektifitas dan tingkat efisiensinya. Untuk mendapatkan beton berkualitas tinggi dapat dengan memanfaatkan sumber daya alam yang pemanfaatannya masih belum maksimal serta mengolah kembali menjadi bahan tambahan pada campuran beton. Salah satu limbah yang belum termanfaatkan dengan baik yaitu abu bonggol jagung. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan abu bonggol jagung terhadap kuat tekan beton dan juga untuk mengetahui kadar optimum dari penambahan abu bonggol jagung pada campuran beton. Pengujian kuat tekan beton dilakukan pada beton berumur 7, 14 dan 28 hari untuk beton normal dan komposisi abu bonggol jagung 5%, 7.5% dan 10%. Penggunaan abu bonggol jagung sebagai substitusi agregat halus dalam campuran beton berpengaruh terhadap kuat tekan beton yang dihasilkan yaitu dengan semakin besar persentase abu bonggol jonggol sebagai substitusi agregat halus maka semakin kecil nilai kuat tekan yang dihasilkan. Sebaliknya, semakin kecil persentase abu bonggol jagung sebagai substitusi agregat halus makan semakin besar nilai kuat tekan yang dihasilkan, yang mana persentase 5%, 7.5% dan 10% memiliki nilai kuat tekan diumur 28 hari yaitu 14,53 MPa, 13,97 MPa, dan 12,08 MPa. Pada beton normal diumur 28 hari melebihi target rencana nilai kuat tekan yaitu 14.53 MPa meningkat menjadi 15.10 MPa. Dengan banyaknya limbah bonggol jagung khususnya di kabupaten Agam agar bisa dimanfaatkan sebagai bahan tambahan dari semen. Kata kunci : Beton, Kuat Tekan, f’c 14.53 MPa, Abu Bonggol Jagung
ANALISIS STRUKTUR ATAS PADA PEMBANGUNAN SDN 04 GAREGEH
Authors: Astri Gusfita Yessi , Masril Masril , Bastian Elfania 
Published: June 2023

Pembangunan proyek konstruksi di Indonesia saat ini cukup berkembang. Hal ini dapat dilihat dari banyaknya proyek-proyek pembangunan Perbandingan ini dapat dilihat dari bentuk bangunan yang beragam dan struktur bangunan yang terus diperbarui hingga terciptanya rasa nyaman dalam penggunaannya (Gesti Leonda,2008). Tujuan dari penelitian ini ialah untuk mengetahui perbandingan struktur atas dimensi kolom, balok, serta penggunaan aplikasi ETABS. Analisis struktur dilakukan melewati beberapa tahapan seperti perencanaan dimulai dari preliminary design, pembebanan struktur, pembebanan gempa. analisis gaya yang terjadi pada struktur dengan menggunakan aplikasi ETABS, penulangan berdasarkan hasil output ETABS membandingkan penulangan realisasi lapangan dengan hasil analisis. Extended Three Dimensional Analysis of Building Systems (ETABS) adalah suatu program yang digunakan untuk melakukan analisis serta desain terhadap struktur bangunan dengan cepat dan tepat. Hasil bangunan yang didesign menggunakan faktor keamanan yang tinggi sehingga hasil analisis tidak menyimpang dari realisasi lapangan yang terlihat pada hasil penulangan kolom, balok utama, balok anak, ring balok, dan plat masih lebih kecil dari pada realisasi penulangan di lapangan. Dimensi kolom, balok dan pelat lantai yang didapatkan dari realisasi lapangan dimensi kolom K1 45x60 , K2 2 x40, K3 40x40, K4 40x60. Dimensi balok B1 30x50, B2 30x50, B3 25x40 dan dimensi ketebalan pelat lantai 120mm Kata kunci : Analisis, Preliminary Design, Pembebanan, Penulangan, Dimensi
EVALUASI VALUE ENGINEERING STRUKTUR ATAS BANGUNAN KPRI RSUD DR. ACHMAD MOCHTAR KOTA BUKITTINGGI
Authors: Firman Aidil , Ishak Ishak , Bastian Elfania 
Published: June 2023

The Substructure of the building of the Civil Servant Cooperative (KPRI) Regional General Hospital (RSUD) Dr. Achmad Mochtar Bukittinggi City was built based on the Indonesian Loading Regulations for Buildings and Buildings (SNI-1727-2013). The modeling is assisted by the ETABS Version 19 software. The dimensions of column K1 on the ground floor are 50x50 cm, K2 on the 1st floor is 40x40 cm, for column K3 on the 2nd floor and K4 on the 3rd floor with the same dimensions, namely 40x40 cm, and K5 on the roof top that is 30×30. While the dimensions of the block B1 is 50×30 cm, B2 is 40×25 cm and B3 is 30×25cm. The research aims to determine the dimensions and analysis of structural loads as well as the effective value of the building, from the results of structural analysis before and after the application of Value Engineering, it is obtained that it has met the provisions of the Indonesian National Standard, so it is safe and feasible.Keywords: Superstructure, Value Engineering, ETABS.