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INDONESIA
KURVATEK
Published by Institut Teknologi Nasional Yogyakarta
ISSN : -     EISSN : 24777870     DOI : https://doi.org/10.33579/krvtk.v4i1
Core Subject : Science, Social, Engineering,
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Social Sciences
Jurnal KURVATEK diterbitkan pertama kali tahun 2016 oleh Pusat Penelitian dan Pengabdian masyarakat pada Sekolah Tinggi Teknologi Nasional Yogyakarta. Jurnal ini mempunyai misi sebagai media pengembangan ilmu pengetahuan dan teknologi dalam bidang geologi, pertambangan, elektro, sipil, material teknik,konversi energi, enegi terbarukan, serta perencanaan wilayah dan kota. Area tulisan dalam jurnal ini cukup luas. Cakupan penulisan mulai dari kajian pustaka maupun ekperimen yang ditulis dengan kaidah-kaidah penulisan ilmiah yang baik dan benar.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 13 Documents
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Search results for , issue "Vol 10 No 1 (2025): Energy Management and Sustainable Environment" : 13 Documents clear
THE IMPACT OF TOTAL MOISTURE AND ASH ON CALORIFIC VALUE: COAL RESEARCH IN BERAU SUB-BASIN, EAST KALIMANTAN Sugiarto, Wahyu; Muljana, Budi; Syafri, Ildrem; Rizal, Yan; Prasetya, Muhammad Nurul Huda
KURVATEK Vol 10 No 1 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i1.5519

Abstract

Coal quality is one of the key factors in determining the effectiveness of processing and utilization. Coal quality assessment involves analyzing physical and chemical aspects to determine its characteristics. Coal quality is also influenced by geological conditions at the mining site, which affect the quality and amount of carbon in the coal. To ensure consistency, it is necessary to implement coal quality control based on physical and chemical parameters from the mining process in the pit to storage in the stockpile. Analysis of the effect of total moisture and ash on the calorific value of coal is the purpose of this study. The method used is a ROM (Run of Mine) coal sample located at the stockpile location. The relationship between Total Moisture and the calorific value of coal shows a negative linear correlation where the influence value for a 1% increase in Total Moisture is -71.343 kcal/kg and so is between Ash and the calorific value of coal 1% increase in Ash is -82.588 kcal/kg, which shows a negative linear correlation. Total Moisture increases by 1%, reducing the calorific value of coal by 71 kcal/kg, and increasing Ash content by 1% reduces the calorific value of coal by 83 kcal/kg.
THE INFLUENCE OF STAKEHOLDERS MANAGEMENT ON TRUST IN CONSTRUCTION PROJECTS Sukindrawati, Buddewi
KURVATEK Vol 10 No 1 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i1.5521

Abstract

Stakeholders are groups or individuals who can influence or be influenced by the achievement of organizational goals. Stakeholder management is identified as the process by which the project team manages stakeholder needs and ensures their goals are achieved. The purpose of this study is to examine factors that influence stakeholder management on trust in construction projects that have an impact on project success. The research method used is a quantitative method with a total of 124 respondents in contracting companies in the Yogyakarta Special Region. The analytical method used is multiple linear regression analysis with the help of a computer program data processing tool SPSS 25.0.. The results of the research on the factors that influence stakeholder management on trust in construction projects are prescriptive stakeholders management (X1), intuitive trust (X2), competence trust (X4), honesty (X5), integrity trust (X3), and communication (X6). The result of the analysis states that the most dominant variable which significantly influences the prescriptive stakeholder management (X1), hence it is important for stakeholders mapping, identification, classification, and monitoring from the start of the project
KETERKAITAN ELEMEN INFRASTUKTUR TRANSPPORTASI BERKELANJUTAN DALAM RANTAI PASOK KOMODITAS BERAS DI KULON PROGO Ridayati, Ridayati; Aminto Ardi, Iwan; Retno Hidayati, Solikhah
KURVATEK Vol 10 No 1 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i1.5524

Abstract

Adequate and sustainable infrastructure serves as a strong foundation for ensuring the efficiency, effectiveness, and sustainability of the rice supply chain. The rice supply chain is a complex system involving various actors and processes, from farmers to consumers. In-depth studies of this supply chain are crucial given the importance of rice as a staple food. This article aims to provide an overview of the interconnections between infrastructure elements in the rice supply chain. Previous studies on the rice supply chain have been limited to a single perspective, such as from the perspective of farmers as producers or rice as a product. This article attempts to explore new insights by measuring the interconnectedness of key elements in the rice supply chain. The method used is Network Enabling Transport Service (NETS), which is commonly used in the transportation field. Variables studied include infrastructure, traffic, regulations, communication, support services, and skills. The research results show that the weakest link in the rice supply chain network lies in the regulatory variable. Weak regulations can hinder efficiency, fairness, and sustainability in the supply chain. These findings underscore the importance of improving policies and regulations to support better integration of the rice supply chain. Regulations are particularly related to the development of infrastructure for the efficiency and resilience of the rice supply chain in the face of climate change challenges and demand fluctuations. Adequate infrastructure, such as roads, irrigation, and storage, is crucial to ensure the stable availability of quality rice
ANALISIS HIDROLOGI DENGAN MENGGUNAKAN METODE RASIONAL DAN NAKAYASU UNTUK EVALUASI PERIMETER DITCH Abdillah, M Arif
KURVATEK Vol 10 No 1 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i1.5525

Abstract

RANCANGAN SISTEM PENYALIRAN TAMBANG PADA TAMBANG BIJIH NIKEL PIT HILL ANYER Alisaputra, Zulfikar Aulia Alisaputra; Peter Eka Rosadi
KURVATEK Vol 10 No 1 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i1.5529

Abstract

Penelitian ini bertujuan merancang sistem penyaliran tambang untuk mengatasi masalah genangan pada lantai pit akibat curah hujan tinggi. Berdasarkan analisis hidrologi menggunakan data curah hujan 15 tahun (2009-2023), metode distribusi Gumbel dipilih dengan curah hujan rencana 75 mm, intensitas curah hujan 16,38 mm/jam, dan periode ulang hujan 2 tahun. Terdapat empat daerah tangkapan hujan (DTH) di area pit, dan desain sistem penyaliran tambang meliputi saluran terbuka, gorong-gorong, dan kolam pengendapan. Dimensi saluran dan gorong-gorong dirancang berdasarkan debit air limpasan masing-masing DTH. Kolam pengendapan terdiri dari tiga kompartemen dengan waktu pemeliharaan 100-1292 hari. Desain ini diharapkan efektif dalam mengelola air limpasan untuk mendukung operasional tambang.
Perencanaan Pusat Kesenian Tradisonal Dengan Pendekatan Arsitektur Neo Vernakular di Kabupaten Banyumas Putri, Elin Dea; Ning, Dwi Jati Lestariningsih; Istiningsih, Dwi
KURVATEK Vol 10 No 1 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i1.5533

Abstract

Indonesia merupakan negara dengan populasi terbesar di Asia Tenggara, yang memiliki keberagaman sumber daya manusia dan budaya. Keragaman bahasa, budaya, dan etnis tersebut telah melahirkan berbagai warisan budaya baik benda maupun non benda yang menjadikan ciri khas serta identitas bangsa Indonesia. Kabupaten Banyumas memiliki beragam kesenian tradisional yang potensial. Terjadinya perubahan secara terus menerus di bidang sosial budaya, yang dipengaruhi oleh pembaharuan di bidang ilmu pengetahuan, teknologi dan terbukanya informasi serta kemudahan dalam mengakses berbagai sumber, bisa menjadi ancaman dan tantangan tersendiri dalam mempertahankan budaya Banyumas tersebut. Untuk itu perlu adanya wadah, sebagai sarana untuk melestarikan dan mengembangkan kesenian tardisional dalam bentuk pusat kesenian tradisional Banyumas. Penerapan konsep Arsitektur neo vernacular menjadi pilihan dalam perancangan, bertujuan untuk memadukan unsur-unsur tradisional lokal dengan langgam modern. Hal ini mencerminkan bahwa budaya local/tradisional setempat mampu menyelesaikan masalah sosial budaya melalui pendekatan arsitektural.
SISTEM DETEKSI KEBAKARAN “SiDinKar” SECARA REAL TIME BERBASIS INTERNET OF THINGS Chrisna Putra Buana; Dini Fakta Sari
KURVATEK Vol 10 No 1 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i1.5537

Abstract

The Fire Detection System emerged because of the many fires in the room. Aims for early detection of room / room conditions from the possibility of fires based Internet of Things. By utilizing internet connectivity in controlling hardware : smoke sensors, fire sensors and buzzer. Displays smoke and gas values and detects the presence or absence of fire in a room and provides notifications when the displayed value exceeds certain limits by using the mobile application on the Android smartphone and buzzer at NodeMCU. This tool uses several devices to connect the process between the response from the sensor and the application. Smoke sensors and fire sensors as data retrieval from objects. NodeMCU is used as a microcontroller. Firebase is used to store temporary data and to link applications with tools. The mobile application, namely SiDinkar, is used to monitor the conditions of gas, smoke and fire in the room. Notification in mobile application is used and buzzer in NodeMCU for alerts under certain conditions. The results of the tests that have been carried out are that the tool is able to display data in the form of smoke and fire taken from Firebase by the Android Application “SiDinKar”. The data displayed on the mobile application is realtime. To access the application in order to monitor realtime requires an internet connection.
OPTIMALISASI PERENCANAAN PRODUKSI APLIKASI BETON GEOPOLYMER DARI FLY ASH DAN BOTTOM ASH BASIS DRY GEOPOLYMER DAN ANALISIS KELAYAKAN: OPTIMIZATION OF PRODUCTION PLANNING AND BUSINESS POTENTIAL ANALYSIS OF FLY ASH AND BOTTOM ASH-BASED GEOPOLYMER CONCRETE Muhammad Faiz Shafiyurrahman
KURVATEK Vol 10 No 1 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i1.5552

Abstract

Dry geopolymer-based concrete from fly ash and bottom ash has been widely developed with the aim of advancing infrastructure to build a sustainable industry from the utilization of such waste. Planning for the construction of a concrete derivative product production business needs to be carried out to optimize the utilization of the budget, warehouse stock, and profit. The derivative products used in this study are paving blocks, adobes, and kanstin with compressive strength standards of 25 MPa, 10 MPa and 30 MPa respectively. Based on the compressive strength standard, the FA:BA ratio of each product is successively 3:1; 1:1; and 1:0 [1]. Therefore, the purpose of this study is to maximize profits by optimization production and raw materials based on calculations simplex linear programming method and conducting business feasibility studies using the SWOT method. Based on the calculation results, the business was focused on paving block products with a total production of 431 pcs/h. with total raw material needs of fly ash 1,199 tons / hour and bottom ash 0,399 tons / hour with a total profit of IDR 172,413. Based on the feasibility test of dry geopolymer concrete products using the SWOT method, it can be said to have great opportunities with its advantages.
Analisis Manifestasi Panas Bumi Melalu Fault Fracture Density (FFD) Di Wilayah Kamojang, Kecamatan Samarang, Kabupaten Garut Muhammad Faza Syaddad Ar-rafi; Wibowo, Nugroho Budi
KURVATEK Vol 10 No 1 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i1.5571

Abstract

Located on the Pacific Ring of Fire, Indonesia has great potential in significant geothermal energy. Kamojang, located in Samarang District, is one of the areas that show this potential. This study aims to assess the existence of geothermal potential in Kamojang through fault density analysis using the Fault Fracture Density (FFD) method. The data used are fault patterns from the National Digital Elevation Model (DEMNas) which are then analyzed to calculate the density of cracks and presented in the form of contour maps. The resulting FFD values range from -0.5 to 9.5 km/km². The results show that the alignment pattern in Kamojang is mostly northwest - southeast, which is closely related to tectonic movements and the formation of active faults in the area. Although the FFD value in this area is relatively low, the presence of active faults still provides a pathway for the movement of geothermal fluids that form geothermal manifestations such as geothermal craters. These results provide important insights to support the management and development of geothermal energy in the Kamojang area.
MINERAL RESOURCE ESTIMATION USING GEOSTATISTICAL METHODS IN THE GOSSAN BLOCK Tommy, Tommy
KURVATEK Vol 10 No 1 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i1.5718

Abstract

Pada daerah penelitian merupakan litologi yang kompleks (batuan vulkanik, sedimen, alterasi hidrotermal menyulitkan korelasi lapisan. Sebaran kadar timbal tidak homogen digunakan penerapan ordinary kriging untuk estimasi timbal dengan litologi kompleks dan alterasi hidrotermal. Berdasarkan metode ordinary kriging, sumberdaya timbal (Pb) diklasifikasikan ke dalam tiga kategori, yaitu measured (volume 2.012.325 m³, tonase 15.092.439 ton, kadar Pb 3,7%), indicated (volume 1.555.856,25 m³, tonase 11.668.921 ton, kadar galena 3,9%), dan inferred (volume 7.309,25 m³, tonase 54.819 ton, kadar Pb 4%). Hasil perhitungan menunjukkan nilai RMSE sebesar 0,40, koefisien korelasi (r) 0,67, dan koefisien determinasi (R²) 0,44, yang mengindikasikan akurasi model yang cukup baik dengan hubungan yang kuat antara nilai estimasi dan aktual.

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