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All Journal MEDIA KONSERVASI Syntax Literate: Jurnal Ilmiah Indonesia Soedirman Economics Education Journal Journal of Earth Energy Science, Engineering, and Technology
Kurniawan, Tito
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Humanities Earth & Planetary Sciences Education Energy Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences Other

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THE IMPACT OF FINANCIAL LITERACY, QUALITY OF LIFE, SOCIOECONOMIC STATUS ON THE CONSUMPTION BEHAVIOR OF PRE-SERVICE TEACHER STUDENTS Kurniawan, Tito; Farizhi, Muhammad Reza; Setiawan, Ananda
Soedirman Economics Education Journal Vol 5 No 1 (2023)
Publisher : Fakultas Ekonomi dan Bisnis, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32424/seej.v5i1.8317

Abstract

This study aims to construct a structural model of the consumption behavior of students of the Teaching and Education Faculty (FKIP) of Universitas Lambung Mangkurat. This study was described using a quantitative method with SEM-PLS to find out the phenomena studied by the decision questionnaire from the questionnaire that had been used in previous studies. The questionnaire was filled in by 214 people from 7810 active students class 2017-2022 FKIP Universitas Lambung Mangkurat by taking data in the form of random sampling. Research shows that financial literacy, quality of life, and social status of parents can be said to be very influential and significant together with the variable knowledge of consumptive behavior of FKIP students at Universitas Lambung Mangkurat.
Habitat and Food of Vampire Crabs (Geosesarma sp.) in Menoreh Mountain, Yogyakarta, Indonesia Kurniawan, Tito; Waluyo; Nofreeana, Andri; Tri Aji, Muhammad
Media Konservasi Vol. 30 No. 1 (2025): Media Konservasi Vol 30 No 1 January 2025
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.30.1.141

Abstract

Vampire crabs (Geoseserma sp.) are freshwater crabs that inhabit humid tropical forest ecosystems, such as the Menoreh Mountain. These crabs play an important role in the ecosystem as detrivores and a food source for other organisms. However, resesearch on their feeding habitat is still limited, leaving gaps in knowledge regarding their dietary preferences and ecological role. Understanding their feeding patterns is essential to support sustainable aquaculture and environmental conservation. The research focused on the feeding habits and food preferences of vampire crabs (Geosesarma sp.) in a humid, forested ecosystem. The study was conducted in the Menoreh Mountain region, which provides a unique habitat for these crabs. Understanding their feeding habits in this natural habitat is essential for promoting sustainable aquaculture practices, where environmental conservation is a priority. This research aimed to analyze vampire crabs’ food and feeding habits (Geosesarma sp.) in their natural habitat to support sustainable aquaculture on the Menoreh mountain slopes. The study employed frequency of occurrence analysis, volumetric analysis, and the Index of Preponderance. Sex ratio analysis and assessments of habitat conditions, including substrate texture and organic content, were conducted. The substrate consisted of sandy clay with an organic content ranging from 8.59% to 37.88%. Vampire crabs were identified as omnivores with a tendency towards herbivory, primarily consuming debris (93.47%), wood (2.75%), worms (1.92%), and leaves (1.86%). Debris was the main food source, supplemented by wood and leaf litter, with worms as an occasional food source. The findings highlighted the crabs' dietary adaptability and provided insights for future sustainable captive breeding efforts.
Comparative Study of In-Furnace and Out-Furnace Coal Blending on Performance Acceptance in Ultra Supercritical Coal-Fired Power Plants Hantoro, Ridho; Kurniawan, Tito
Journal of Earth Energy Science, Engineering, and Technology Vol. 8 No. 2 (2025): JEESET VOL. 8 NO. 2 2025
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/qnyep978

Abstract

This study aims to improve fuel flexibility in ultra-supercritical coal-fired power plants through an optimal coal blending strategy. This is important because this type of power plant faces challenges in coal availability, operational reliability, and energy efficiency, and must comply with increasingly stringent emission regulations. However, determining the ideal coal blend remains a challenge due to the difficulty of balancing aspects of performance, emission levels, production costs, and overall operational impacts. In this study, the Multi Criteria Decision Making (MCDM) method with a goal programming approach is used to optimize the proportion of coal blending in the boiler (in-furnace) and out-furnace. This study is important to ensure that ultra-supercritical coal-fired power plants can meet energy demand more flexibly, efficiently, and sustainably in the face of changing coal supply conditions and environmental policies. The study tested various coal calorific values ​​(from 5200 to 4200 kCal/kg) optimally used individually (single coal) and mixed. Coal blending optimization was carried out on 4 parameters using five types of coal to fill five boiler silos, obtaining an improvement in sulfur parameters of 6.3%, coal price parameters of 0.85%, HHV parameters of 0.54% and slagging-fouling index parameters of 5.64%.
Studi Perbandingan In-Furnace and Out-Furnace Coal Blending Terhadap Performance Acceptance pada Pembangkit Listrik Tenaga Uap Batubara Ultra Superkritis Kurniawan, Tito; Hantoro, Ridho
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v10i2.55259

Abstract

Penelitian ini bertujuan untuk meningkatkan fleksibilitas bahan bakar di PLTU ultra-superkritis melalui strategi pencampuran batubara (coal blending) yang optimal. Hal ini penting karena pembangkit listrik jenis ini menghadapi tantangan dalam ketersediaan batubara, keandalan operasional, dan efisiensi energi, serta harus mematuhi peraturan emisi yang semakin ketat. Meski demikian, menentukan campuran batubara yang ideal masih menjadi tantangan karena sulitnya menyeimbangkan aspek performa, tingkat emisi, biaya produksi, dan dampak operasional secara keseluruhan. Dalam penelitian ini, digunakan metode Multi Criteria Decision Making (MCDM) dengan pendekatan goal programming untuk mengoptimalkan proporsi pencampuran batubara di dalam (in-furnace) dan di luar (out-furnace) boiler. Penelitian ini penting untuk memastikan bahwa PLTU ultra-superkritis dapat memenuhi permintaan energi dengan lebih fleksibel, efisien, dan berkelanjutan dalam menghadapi perubahan kondisi pasokan batubara dan kebijakan lingkungan. enelitian menguji berbagai nilai kalori batubara (dari 5200 hingga 4200 kCal/kg) optimal digunakan secara individual (single coal) dan campuran, Optimasi coal blending dilakukan terhadap 4 parameter yang menggunakan lima jenis batubara untuk mengisi lima silo boiler mendapatkan improvement parameter sulfur 6,3%, parameter harga batuabra 0,85 %, parameter HHV 0,54 % dan parameter slagging-fouling index 5,64 %.
Co-Authors ANANDA SETIAWAN Andri Nofreeana Farizhi, Muhammad Reza Ridho Hantoro Tri Aji, Muhammad Waluyo