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All Journal Jurnal Agroteknos Taman Cendekia : Jurnal Pendidikan Ke-SD-an JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN INOVTEK POLBENG Dinasti International Journal of Management Science Journal of Educational Sciences Jurnal Manajemen Sistem Informasi Jurnal Polimesin TANJAK : Jurnal Pengabdian Kepada Masyarakat
Irwan Kurniawan
Indonesian Center for Earthquake Engineering
Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

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RESPON PERTUMBUHAN KACANG TANAH (Arachis hypogaea L.) PADA BERBAGAI DOSIS BOKASHI LIMBAH AMPAS TAHU DAN PUPUK FOSFAT KURNIAWAN, IRWAN; AFA, LAODE; YUSUF, DEWI NURHAYATI
Jurnal Agroteknos Vol 12, No 1 (2022)
Publisher : Jurnal Agroteknos

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Peanut (Arachis hypogaea L.) is an agricultural commodity that acts as a protein and vegetable oil source, but in Southeast Sulawesi, its productivity is still relatively low. This study aims to determine the effect of giving bokashi tofu waste and phosphate fertilizer on the growth of peanut plants. The research was conducted at the Experimental Field Laboratory II, Faculty of Agriculture, Halu Oleo University, Kendari, from June to September 2021. The study used a factorial randomized block design consisting of bokashi tofu waste with four treatment levels, namely 0, 5, 10, and 15 tons per hectare, and phosphate fertilizers with three treatment levels, namely 0, 100, and 200 kg per hectare. The total combination of treatments was 12, with three replications. Observational data were analyzed using analysis of variance and UJBD. The analysis results showed that the interaction of bokashi with tofu waste and phosphate fertilizer had a significant effect on plant heights 28 and 35 DAP, stem diameter 21 DAP, leaf area 14, 21, and 28 DAP, and root loss ratio. Bokashi tofu waste independently significantly affected plant height, stem diameter 28 DAP, leaf area, and root loss ratio. Phosphate fertilizer independently significantly affected plant height at 28 and 35 DAP, leaf area at 14 and 21 DAP, and root loss ratio. The combination of 15 tons of tofu waste bokashi per hectare and 100 kg of phosphate fertilizer per hectare was the best treatment for increasing the growth of peanut plants.
ANALISIS DAN PERANCANGAN SISTEM PENDUKUNG KEPUTUSAN PENENTUAN PRIORITAS PERBAIKAN JALAN PADA PEMERINTAH DAERAH KABUPATEN BATANG HARI DENGEN METODE AHP (ANALYTICAL HIERARCHY PROCESS) Kurniawan, Irwan; Assegaff, Setiawan
Jurnal Manajemen Sistem Informasi Vol 4 No 3 (2019): Jurnal Manajemen Sistem Informasi
Publisher : LPPM Universitas Dinamika Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33998/jurnalmanajemensisteminformasi.2019.4.3.663

Abstract

The road is an infrastructure that plays an important role in people's daily lives. Therefore, it isnecessary to maintain and repair road conditions regularly. The existence of budget constraints causesnot all damaged road sections can be handled. So that in handling road repairs it is necessary todetermine priorities. In determining the priority of road improvement there are criteria that are takeninto consideration in decision making. One method of analysis that can be used to overcome complexitydue to various criteria is the Analytical Hierarchy Process (AHP) method. The AHP method is used toobtain the weight of 4 criteria that are taken into consideration in determining the priority of roadimprovement, namely road conditions, traffic volume, costs, and road classification. Calculation of scoresfor each road improvement proposal is obtained by multiplying the priority weight of the criteria by thecriteria value of each proposal. The results show that the Decision Support System that is designed canproduce a ranking of alternatives in the form of road improvement proposals based on predeterminedcriteria, so that it can be used as a basis for decision making to determine road improvement priorities.
THE EFFECT OF TAX SANCTIONS AND TAX AUTHORITIES SERVICES ON TAX COMPLIANCE AND TAXPAYER AWARENESS AS MODERATION VARIABLE (SURVEY ON CORPORATE TAXPAYERS DOMICILED IN TANGERANG) Kurniawan, Irwan; Daito, Apollo
Dinasti International Journal of Management Science Vol. 2 No. 3 (2021): Dinasti International Journal of Management Science (January - February 2021)
Publisher : Dinasti Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31933/dijms.v2i3.699

Abstract

This research examines the Effect of Tax Sanctions and Tax Authorities Service on Tax Compliance Taxpayer Awareness as Moderation Variables. The population in this study is corporate taxpayers who live in Tangerang, based on data until the end of 2018 there were 1,570 taxpayers, the determination of the number of samples was determined using the Slovin formula so that the sample used was 94 respondents. Data were collected using a questionnaire and using the Ordinal scale. The distribution and collection of questionnaires was carried out in June 2020 and the number of questionnaires that could be used was 88 questionnaires or 93%.In analyzing the data used a quantitative approach through Software SPSS 23. The simultaneous Tax Sanction, Tax Authorities Service have a significant effect on Tax Compliance Taxpayer Awareness . Partially Tax sanctions have a significant effect on compliance with corporate taxpayers, the Tax Authorities Service have a significant effect on compliance with corporate taxpayers. Interactionlly awareness of taxpayers moderating tax sanctions does not affect the compliance of corporate taxpayers, awareness of taxpayers moderating tax authorities services have a significant effect on compliance with corporate taxpayers.
KOMPOR HEMAT ENERGI MENGGUNAKAN OLI BEKAS SEBAGAI BAHAN BAKAR Kurniawan, Irwan; Setyawan, Reinaldi Teguh
INOVTEK POLBENG Vol 13, No 2 (2023): VOL 13 NO 2
Publisher : POLITEKNIK NEGERI BENGKALIS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35314/ip.v13i2.4445

Abstract

An energy-efficient stove powered by used oil is an innovative solution designed to reduce dependence on conventional fossil fuels and utilize unused oil waste. This research concentrates on the creation of an efficient stove system that utilizes used oil as its primary energy source. This stove's specific design ensures optimal combustion, minimizes harmful emissions, and enhances heat efficiency. We employ an integrated heating method to maximize energy output, utilizing heat-resistant material construction and a controlled airflow system. We conducted testing of the stove under various operational conditions to measure its performance, temperature stability, and fuel consumption. The results of the experiment show that this stove not only produces stable heat but also has a higher efficiency level compared to traditional stoves. The implementation of this technology is expected to provide an economical and environmentally friendly energy alternative as well as serve as a sustainable solution in the management of used oil waste.
EKSPERIMENTAL PENGARUH UKURAN SARINGAN PADA MESIN PENGHALUS ARANG TEMPURUNG KELAPA TERHADAP KARAKTERISTIK BRIKET Murdani, Murdani; Kurniawan, Irwan; Martianis, Erwen; Hakim, Apriman
INOVTEK POLBENG Vol 13, No 2 (2023): VOL 13 NO 2
Publisher : POLITEKNIK NEGERI BENGKALIS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35314/ip.v13i2.4457

Abstract

This research aims to investigate the effect of mesh size on the coconut shell charcoal grinder machine on the grinding time and the quality of the produced briquettes. We tested different mesh screen sizes to determine the optimal grinding time and their impact on the briquettes' characteristics, including density, compressive strength, and combustion efficiency. The research results show that the sieve size has a significant impact on the grinding time and the quality of the briquettes. A 0.5 mm sieve results in the longest grinding time, while a 1 mm sieve provides the fastest grinding time. The smaller the sieve size, the longer it takes to achieve the desired fineness. Other factors such as compressive strength and combustion still influence the quality of the produced briquettes, even though the 1 mm sieve increases time efficiency. Therefore, we recommend using the 1 mm sieve for time efficiency, but further testing is necessary to ensure optimal briquette quality, particularly in terms of density and combustion efficiency.
Implementasi Karakter Gotong Royong Pada Mata Pelajaran Pendidikan Pancasila Di Tingkat Sekolah Dasar Jayanti, Tarisa; Istiqomah , Lailatul; Kurniawan, Irwan
Taman Cendekia: Jurnal Pendidikan Ke-SD-an Vol 8 No 2 (2024): Desember 2024
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/tc.v8i2.17243

Abstract

Globalisasi telah membawa masuk berbagai budaya luar, yang secara alami memicu perubahan budaya dalam masyarakat. Dalam menghadapi dinamika ini, nilai-nilai tradisional seperti gotong royong yang mulai tergerus oleh perkembangan teknologi perlu diperkuat kembali, khususnya di kalangan siswa, agar tetap lestari. Penanaman nilai gotong royong sangat penting, terutama bagi siswa sekolah dasar. Pendidikan Pancasila menjadi salah satu mata pelajaran yang dapat membantu menanamkan nilai tersebut, sekaligus mendorong rasa kebersamaan dan kerja sama di kalangan peserta didik. Penelitian ini bertujuan untuk mengeksplorasi pentingnya menanamkan nilai gotong royong melalui Pendidikan Pancasila di sekolah dasar. Pengumpulan data dilakukan dengan menyebarkan kuesioner kepada 66 guru sekolah dasar, dan data dianalisis menggunakan metode kuantitatif. Hasil penelitian menunjukkan bahwa menumbuhkan semangat gotong royong adalah salah satu tujuan penting guru dalam mengajarkan Pendidikan Pancasila. Gotong royong mendorong siswa untuk saling membantu dan peduli, serta melalui kerja sama, mereka dapat menyelesaikan tugas dengan lebih efektif, meningkatkan partisipasi, dan menghasilkan pencapaian yang lebih optimal.
Peningkatan Kualitas Sarana Pembelajaran Sekolah“ Dta ( Al-Amin) Desa Sungai Alam” Kurniawan, Irwan; Imran, Imran
TANJAK : Jurnal Pengabdian Kepada Masyarakat Vol 5 No 2 (2024): TANJAK : Jurnal Pengabdian Kepada Masyarakat
Publisher : P3M Politeknik Negeri Bengkalis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35314/82b9d132

Abstract

Peningkatan kualitas sarana pembelajaran merupakan salah satu strategi penting dalam meningkatkan mutu pendidikan, terutama di sekolah-sekolah berbasis agama seperti Diniyah Takmiliyah Awaliyah (DTA) Al-Amin di Desa Sungai Alam. Penelitian ini bertujuan untuk menganalisis dampak peningkatan sarana terhadap efektivitas proses pembelajaran di DTA Al-Amin, termasuk dampak terhadap motivasi belajar siswa dan kualitas interaksi antara guru dan siswa. Penelitian ini menggunakan pendekatan kualitatif deskriptif, dengan teknik pengumpulan data melalui observasi langsung, wawancara, dan dokumentasi. Temuan menunjukkan bahwa peningkatan sarana pembelajaran berdampak positif terhadap motivasi siswa, kemampuan guru dalam menyampaikan materi, dan hasil belajar siswa secara keseluruhan.
Distributed temperature sensing and fault-tolerant logging for PVC-based smoke condensers using dual-channel type-K sensors Setyawan, Reinaldi Teguh; Umira, Siti; Kurniawan, Irwan; Gunawan, Gunawan; Muthoriq, Ery
Jurnal Polimesin Vol 23, No 4 (2025): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i4.7386

Abstract

The condensation process of smoke in charcoal-burning systems generates high temperatures that pose a critical thermal risk to PVC piping, which has a melting point of 85 °C. This study presents the design and implementation of a distributed temperature sensing system using dual-channel Type-K thermocouples controlled by an Arduino Uno microcontroller. The system is equipped with fault-tolerant logging and real-time monitoring features, utilizing the MAX6675 thermocouple amplifier module for digital signal acquisition. Two sensors are strategically placed along the smoke conduit to capture temperature differentials between primary and secondary zones. Experimental testing was conducted over six consecutive days with data acquisition sessions at noon and midnight. The highest recorded temperature from the primary sensor reached 83.75 °C, while the secondary sensor recorded significantly lower values, indicating a thermal gradient of 23.8 °C between inlet and outlet. Comparative calibration using an umbrella-type analog thermometer revealed a minimal deviation of 0.41 °C, confirming the system’s accuracy. Two sets of error profiling showed variations in measurement consistency, with average error rates of 13.79% and 5.93% across a 30 °C–80 °C reference range. Voltage stability was maintained throughout all test scenarios, with a constant 5 V input and 4.4 V output. The system successfully demonstrated its ability to perform dual-point thermal detection with resilient performance under fluctuating combustion conditions. This sensor-integrated platform is well-suited for thermal protection and early intervention in biomass-based liquid smoke condensation systems, particularly in small-scale applications using low-melting-point materials such as PVC.
The Influence of the Project Citizen Model on Elementary School Students' Critical Thinking Skills Kurniawan, Irwan; Cathrin, Shely
Journal of Educational Sciences Vol. 10 No. 1 (2026): Journal of Educational Sciences
Publisher : FKIP - Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.10.1.p.432-443

Abstract

This study aims to analyze the influence of the Project Citizen model on the critical thinking skills of elementary school students. The main problem in learning Civic Education in elementary schools is the low critical thinking skills of students due to the dominance of conventional approaches that focus on one-way learning. This study uses a quantitative approach with a quasi-experimental design, involving two groups: an experimental class that applies the Project Citizen model and a control class that uses conventional learning. The research instrument is a test. The results of the analysis show that the average pre-test score of 50.48 increased to 74.04 in the post-test after the implementation of Project Citizen. The independent t-test showed a significance value of 0.019 <0.05, which means there is a significant influence between the implementation of the Project Citizen model on improving students' critical thinking skills. In addition, the implementation of this model also increases participation and effective communication between students. Thus, Project Citizen is proven to be effective in developing the critical thinking skills of elementary school students, and is relevant to be applied in Pancasila Education learning that emphasizes the formation of democratic and reflective characters.
THERMAL AND ENERGY ANALYSIS OF AN ICE-MAKING MACHINE USING AN OUTDOOR AC REFRIGERATION SYSTEM Teguh Setyawan, Reinaldi; Kurniawan, Irwan; Umira, Siti
Jurnal Dinamika Vokasional Teknik Mesin Vol. 10 No. 2 (2025)
Publisher : Department of Mechanical Engineering Education

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Abstract

This study investigates the thermal and energy performance of a custom designed ice maker that utilizes a modified outdoor air conditioning (AC) unit as its primary refrigeration system. The objective is to evaluate the feasibility, efficiency, and operational stability of using a household AC condenser unit for small scale ice production, particularly in areas with limited access to commercial ice making equipment. The experimental setup was tested over an 8 hour operation period, with parameters such as input water temperature, ice formation temperature, freezing time, power consumption, Coefficient of Performance (COP), and system efficiency being measured and analyzed. The results show that the system was capable of producing 6.5 kg of ice, with a measured actual COP of 3.05 and an efficiency of 67.78%. Although minor deviations were observed from the design specifications, the overall performance remained within acceptable limits. These findings suggest that repurposing outdoor AC units can provide a cost effective and energy efficient alternative for localized ice production.
Co-Authors Azzami, Abdulloh Daito, Apollo Ery Muthoriq, Ery Firlyansyah, Hilda Fitriah, Hasanah Gunawan Gunawan Hairullah Hairullah, Hairullah Hakim, Apriman Imran Imran Istiqomah , Lailatul Jayanti, Tarisa Magdalena, Ina Martianis, Erwen Mujoko, Bejo Murdani Murdani, Murdani Pratiwi, Annisa Dwi Rahmayani, Lusy Nur Reinaldi Teguh Setyawan Setiawan Assegaf Shely Cathrin Tajul Arifin Teguh Setyawan, Reinaldi Umira, Siti Yuliyani, Tika Yusuf, Dewi Nurhayati