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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) MOTION : Jurnal Riset Physical Education SITEKIN: Jurnal Sains, Teknologi dan Industri Indonesian Journal of Disability Studies Profetika Journal of Geoscience, Engineering, Environment, and Technology Jurnal Penelitian Sains JRSI (Jurnal Rekayasa Sistem dan Industri) Bahastra: Jurnal Pendidikan Bahasa dan Sastra Indonesia Journal of Applied Health Management and Technology Journal of SPORT (Sport, Physical Education, Organization, Recreation, and Training) Journal of Sport Coaching and Physical Education Jurnal Ilmiah Wahana Pendidikan Jurnal Pengabdian Olahraga Masyarakat Juru Rawat. Jurnal Update Keperawatan Journal of Physical Education and Sport Pedagogy Mashlahah: Journal of Islamic Economics Spektrum Industri
Mulyadi, Agus
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Religion Humanities Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Nursing Physics Public Health Social Sciences Other

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An Alternative Power Supply System During Peak Loads Using Solar Cells Zulfikar, Zulfikar; Zulhelmi, Zulhelmi; Mulyadi, Agus
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 9, No 3: September 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (672.76 KB) | DOI: 10.11591/ijpeds.v9.i3.pp1338-1348

Abstract

Utilization of renewable energy becomes a necessity in the future due to the fossil energy supply continues to decline. In Indonesia, the use of electricity from renewable sources is minimal. The utilization of solar energy in Indonesia is still limited to remote areas or islands. The main problem of electricity in Indonesia, especially in the city of Banda Aceh, is the frequent occurrence of power outages from the state power plant (PLN), especially during peak load time (WBP). Outside of that time, electricity supply exceeds demand. This study aims to utilize solar energy to reduce the electricity consumption of PLN during WBP. The system is designed to divert the power supply from PLN to the solar power plant (PLTS). The results of a survey of 10 A (current limit) customers are used as a reference to calculate PLTS capacity. During WBP, PLTS supplies to the load, beyond that time, PLN will supply the load. The system is designed to store maximum energy beyond the WBP period into the battery, the source of energy is mainly from the PLTS and alternatively from the PLN when the PLTS can not supply the maximum power. Based on battery energy, the system diverts the load supply from PLN when the battery energy is below the recharge limit. In the case of 10 A customers, with the energy requirement during WBP of 4.3 kWh, it requires 12 solar panels (160 Watt maximum power) arranged in parallel. Thus, the system needs three batteries with 150 Ah capacity also assembled in parallel. The implementation results prove that the PLTS can store solar energy to the battery properly, the system also successfully divert the PLTS source to the load at the time of WBP and transfer back to the PLN source when the battery energy is less than the recharge limit.
Pengembangan Panduan Menulis Teks Laporan Hasil Observasi Outdoor Learning Siswa Kelas V SD Muhammadiyah 16 Surabaya Mulyadi, Agus; Sujinah, Sujinah; Yarno, Yarno
Jurnal Bahastra Vol 9, No 2 (2025)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/bahastra.v9i2.10630

Abstract

This study aims to develop a writing guide for observation report texts tailored to outdoor learning activities, integrating both observational and writing components to support students in composing structured and coherent reports. Employing the Research and Development (RD) methodology, the study follows a series of phases: analysis, design, development, implementation, and evaluation. Validation was conducted through assessments by both experts and users. The validation results demonstrate a high level of feasibility, with expert and user approval ratings of 97% and 96.16%, respectively, yielding an average of 96.58%, which is categorized as “very good.” These findings indicate that the developed guide significantly contributes to the improvement of students’ writing competencies in the context of outdoor learning. Consequently, the guide proves to be an effective instructional tool to enhance the quality of observation-based writing in primary education, particularly at SD Muhammadiyah 16 Surabaya.
Perbandingan Aktivitas Antioksidan Ekstrak Etil asetat dan Metanol Daun Tumbuhan Matoa (Pometia pinnata) Situmeang, Boima; Musa, Weny JA; Mulyadi, Agus; Ibrahim, Agus Malik; Widiyanto, Holisha; Bialangi, Nurhayati
Jurnal Penelitian Sains Vol 26, No 1 (2024)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v26i1.919

Abstract

Matoa (Pometia pinnata) is a plant from the Sapindaceae family that is widely distributed throughout the Asia-Pacific region, including Indonesia, Malaysia, Thailand, and Sri Lanka. In Indonesia, the Matoa plant is commonly found in Java, Sumatra, and Papua. Empirically, the leaves of the Matoa plant have been utilized by the community as a traditional remedy for treating hypertension, fever, and diarrhea. The aim of this study was to test the antioxidant activity of ethyl acetate extract and methanol extract of Matoa leaves. Extraction was performed using the maceration method. The antioxidant activity was evaluated using UV-Visible spectroscopy. The free radical used was DPPH at a concentration of 50 ppm. The absorbance was measured at a wavelength of 517 nm. The antioxidant activity of the ethyl acetate extract of Matoa leaves was 38.87 ppm and 37.73 ppm. The antioxidant activity of the methanol extract of Matoa leaves was 27.99 ppm and 33.25 ppm. Based on the antioxidant activity values, both the ethyl acetate and methanol extracts of Matoa leaves have the potential as a source of natural antioxidants. 
Pengaruh Bersepeda terhadap Nilai Sosial pada Komunitas Sepeda Perempuan Juhrodin, Juhrodin; Subekti, Nuriska; Nur Mulyadi, Dwi Yulia; Mulyadi, Agus
Jurnal Pengabdian Olahraga Masyarakat Vol 6, No 2 (2025): Juli 2025
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jpom.v6i2.22504

Abstract

Pengabdian ini bertujuan untuk mengkaji bagaimana aktivitas bersepeda mengintegrasikan nilai-nilai sosial dalam komunitas sepeda perempuan guna memahami peranannya dalam mengatasi hambatan partisipasi dan mendorong pemberdayaan serta kohesi sosial di lingkungan yang inklusif. Pelaksanaan program melalui lima tahap sistematis: membangun komitmen dengan ketua komunitas, perencanaan program terstruktur, pengumpulan informasi kebutuhan dan potensi komunitas, implementasi aksi berupa kegiatan interaktif dan bersepeda komunal, serta monitoring dan evaluasi. Analisis paired samples test menunjukkan perbedaan signifikan antara pretest dan posttest dengan peningkatan rata-rata 82,833 poin (p0,05), membuktikan keberhasilan program dalam mengintegrasikan nilai-nilai sosial. Program tidak hanya memperkuat kohesi komunitas tetapi juga berkontribusi pada pemberdayaan perempuan dalam aktivitas olahraga. Model pengabdian ini berpotensi diadaptasi untuk pengembangan komunitas sepeda perempuan lainnya, menawarkan kerangka kerja efektif untuk memperkuat nilai sosial sambil mendorong partisipasi perempuan dalam aktivitas fisik komunal
Peningkatan Kesehatan dan Pengembangan Karakter Remaja melalui Kegiatan Olahraga: Evaluasi Dampak terhadap Perkembangan Remaja Subekti, Nuriska; Mulyadi, Agus; Listyasari, Endah; Nur Mulyadi, Dwi Yulia; Juhrodin, Juhrodin
Jurnal Pengabdian Olahraga Masyarakat Vol 5, No 1 (2024): Mei 2024
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jpom.v5i1.18080

Abstract

Studi ini menguraikan program Pengabdian bagi Masyarakat (PbM) yang bertujuan meningkatkan kesehatan dan pengembangan karakter remaja melalui kegiatan olahraga di Dusun Pengkolan dan Perumahan Sindangkasih Regency 2, Ciamis. Remaja di Indonesia sering menghadapi tantangan kesehatan dan sosial, termasuk masalah kesehatan mental, obesitas, dan pergaulan bebas. Kegiatan olahraga dianggap penting dalam mengatasi masalah ini, meskipun masih ada kendala seperti minimnya fasilitas olahraga dan kurangnya dukungan masyarakat. Melalui pendekatan partisipatif dan metode PAR, program ini melibatkan remaja, keluarga, dan pihak sekolah. Tahapan program mencakup persiapan, pelaksanaan pelatihan, dan evaluasi. Kegiatan olahraga dipilih dengan cermat untuk meningkatkan kesehatan dan mengintegrasikan pengembangan karakter. Evaluasi dilakukan untuk mengukur dampak program terhadap kesehatan dan karakter remaja. Hasilnya menunjukkan peningkatan signifikan dalam kedua aspek tersebut. Dalam mengatasi tantangan, solusi yang diusulkan melibatkan kerjasama dengan pemerintah setempat, sosialisasi, dan kolaborasi dengan pihak terkait. Kesimpulannya, program ini berhasil memberikan dampak positif dan relevan bagi perkembangan remaja, dengan implikasi bagi pengembangan program serupa di masa mendatang.
A Decade of Research on Blood and Supply Chain Management: A Bibliometrics Analysis Mulyadi, Agus; Rahmawati, Puput
Jurnal Rekayasa Sistem & Industri Vol 11 No 02 (2024): Jurnal Rekayasa Sistem & Industri
Publisher : School of Industrial and System Engineering, Telkom University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25124/jrsi.v11i02.449

Abstract

Effective Blood Supply Chain Management has significant impacts on health and cost savings. This study aims to identify relevant research on the blood supply chain and recent trends in the Google Scholar database over the past decade (2012-2022) using bibliometric analysis. Articles were collected using the Publish or Perish software, yielding 339 articles after screening. Mendeley software was used for reference management and continuity, while VOSviewer software was used for article mapping. The journals with the highest number of articles were Computer & Chemical Engineering and Transfusion, each with 16 articles. The most cited article was by Jabbarzadeh et al. (2014), cited 357 times. Four clusters were identified, with the most frequent terms in each cluster being "blood," "model," "demand," and "blood product." The results indicate that technologies such as machine learning, AI, and blockchain, along with the development of integrated information systems, are the main focus for improving the efficiency and effectiveness of blood supply chain management. Managerial implications include enhanced blood stock management, optimized distribution, and reduced risk of shortages or overstock. The implementation of these technologies allows for more informed decision-making, ensures transparency and security in the supply chain, and improves coordination among stakeholders to ensure adequate and timely blood availability
Designing the Layout of Fibreglass Production Facilities Using the ARC (Activity Relationship Chart) and ARD (Activity Relationship Diagram) Methods at PT. XYZ Puji, Ari Andriyas; Mulyadi, Agus; Novrianto, M. Fajri
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 20, No 2 (2023): June 2023
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v20i2.20137

Abstract

PT. XYZ is a plastic material and product manufacturing company founded in Riau in 1997. This company produces fibreglass (FRP) goods and accepts design requests according to consumer demand. In addition, PT. XYZ also has water tanks made of Polyethylene (HDPE) and stainless steel. In practice, some inefficiencies and inefficiencies make it difficult for operators to find tools such as grinders. This study uses the ARC (Activity Relationship Chart) and ARD (Activity Relationship Diagram) and redesigns the layout of the fibreglass production facility. The results of the study show changes and rotations in the 90º room operator, the transfer of measurements and cuts close to the base material mixture workstation located in the fibreglass production division room, and the addition of 4 workstations because it utilizes an empty floor. Keywords: ARC, ARD, Fiberglass, Layout
Prinsip Keadilan Dalam Akad Mudharabah Maulana, Lutfi; Mulyadi, Agus
MASHLAHAH Vol. 2 No. 2 (2023): Mashlahah: Journal of Islamic Economics
Publisher : Sekolah Tinggi Agama Islam Darussalam Kunir

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62824/813j2965

Abstract

Filsafat adalah kegiatan berfikir yang didalamnya mencakup alam berfikir, perbincangan mengenai segala hal, sarwa sekalian alam secara sistematis dan radikal (mendalam). Berfilsafat mengajarkan agar selalu meletakan tanda tanya dalam setiap hal guna mengajarkan agar selalu berfikir objektiv yang mana tidak hanya mempermaslahkan pendapat-pendapat yang telah diterima namun juga mencari ukuran-ukuran dan mengkaji nilainya. Begitupun dalam kegiatan berekonomi, filsafat hadir sebagai kritik terdapat praktek ekonomi, yang selama ini kegiatan ekonomi tersebut terjebak dalam rutinitas yang tidak pernah mengkritik diri, filsafat hadir untuk mengkritik guna mendapatkan jawaban atas permasalahn-permasalahan yang ada dan untuk menumbuhkan prinsip keadilan bagi pelaku ekonomi, yang mana keadilan tersebut adalah prinsip yang sangat mendasar dalam kegiatan berekonomi. Karena pada dasarnya hasil yang didapatkan dari praktek ekonomi itu tidak menentu, yakni bisa bervariasi kadang untung dan kadang rugi. Mudharabah hadir menwarkan sistem pengelolaan keuangan dalam kegiatan ekonomi dengan usahanya untuk menyatukan antara Capital dan Labour (skill dan enteurpreneur) yang selama ini terpisah dalam bank konvensional. Maka filsafat mengkajinya lebih dalam tentang nilai nilai yang terkandung dalam sistem mudharabah, untuk memastikan apakah muamalah bentuk ini dapat menjadi model terbaik delam berekonomi (berbisnis) dalam dewasa ini.
Pengaruh Fitness Test Dan Pemahaman Peraturan Permainan (Laws Of The Game) Terhadap Kinerja Wasit Dan Asisten Wasit C1 Nasional Provinsi Dki Jakarta Mulyadi, Agus; Solihin, Akhmad Olih; Syamsudar, Bangbang
Jurnal Ilmiah Wahana Pendidikan Vol 10 No 10 (2024): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.11628813

Abstract

Tujuan dari penelitian adalah untuk mengetahui perbandingan pengaruh yang diberikan fitness test dan pemahaman peraturan permainan (laws of the game) terhadap kinerja wasit dan asisten wasit sepakbola C1 Nasional PSSI Provinsi DKI Jakarta. Tingkat standar fisik (fitness test) dan non fisik wasit (pemahaman peraturan permainan (Laws Of The Game)) sepakbola yang belum memenuhi standar dapat mengakibatkan terjadinya kepemimpinan pertandingan yang buruk. Hal ini sering terjadinya keributan dalam pertandingan antara wasit dan pemain yang diawali dengan sikap wasit kurang tepat dalam mengambil keputusan. Penelitian ini menggunakan desain penelitian kuantitatif dengan metode kausal komparatif. Penelitian ini menggunakan desain penelitian kuantitatif dengan metode kausal komparatif. Instrumen yang di gunakan dalam penelitian ini adalah menggunakan tes dan angket. Populasi dalam penelitian ini adalah wasit-wasit yang terdaftar sebagai anggota wasit PSSI Provinsi Dki Jakarta yang berstatus wasit C1 Nasional, yang berjumlah 38 orang. Metode Pengambilan sampel pada penelitian ini menggunakan jenis Non probability sampling dengan teknik Purposive sampling. Sampel dalam penelitian ini adalah wasit-wasit yang terdaftar sebagai anggota wasit PSSI Provinsi Dki Jakarta yang berstatus wasit C1 Nasional yang berjumlah 20 orang. Berdasarkan hasil pengolahan dan analisis data mengenai pengaruh fitness test dan pemahaman peraturan permainan (Laws Of The Game) terhadap kinerja wasit dan asisten Wasit C1 Nasional, yang dilakukan di Pengcab PSSI DKI Jakarta, dapat ditarik kesimpula bahwa besar pengaruh antara fitness test terhadap kinerja wasit dan asisten Wasit C1 Nasional Provinsi DKI Jakarta sebesar 39.44%, sedangkan pengaruh antara kekuatan otot lengan terhadap kinerja wasit dan asisten Wasit C1 Nasional Provinsi DKI Jakarta 48.16%. Besar pengaruh antara panjang tungkai dan kekuatan otot lengan terhadap terhadap kinerja wasit dan asisten Wasit C1 Nasional Provinsi DKI Jakarta sebesar 54.32%
Cost Model of Activity Oriented Municipal Solid Waste Management: Integration of Activity Based Costing/Management and Causal Loop Diagram Dermawan, Dedi; Mulyadi, Agus; Wardana, Sajidi
Spektrum Industri Vol. 23 No. 2 (2025): Spektrum Industri - October 2025
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v23i2.445

Abstract

The increasing generation of municipal solid waste (MSW) in Pekanbaru, a densely populated city in Riau Province, has led to higher waste management costs. In 2023, the city generated 1,011 tons of waste daily, with management costs reaching around IDR 93 billion. Traditional cost calculation methods are often inaccurate, failing to account for the activities involved in MSW management. This study develops an activity-based cost management model using Activity-Based Costing/Management (ABC/M) to map costs to specific waste management activities, combined with Causal Loop Diagrams (CLD) to analyze activity relationships and formulate a mathematical cost model. The application of ABC/M identified four primary waste management activities: collection, transportation, processing, and disposal. The results show a total waste management cost of approximately IDR 91 billion, with CLD revealing dynamics such as the impact of incentives on recycling rates and the balancing effects of transportation and waste bank usage on waste generation. This study contributes provides a novel cost model for municipal waste management, offering both theoretical and practical contributions for improving cost efficiency and resource allocation.
Co-Authors Akhmad Solihin Albafery Ari Andriyas Puji Boima Ramses Situmeang Dedi Dermawan, Dedi Dicky Tri Juniar Ediyanto Eko Supriyanto Endah Listyasari Gayuh Siska Laksananno Ibrahim, Agus Malik Indra Hasan Indradewa, Rhian Juhrodin Juhrodin Kawai, Norimune Lutfi Maulana Mulyadi, Dwi Yulia Nur Muthoifin Narlan, Abdul Novrianto, M. Fajri Nugraha, Romi Faraz Nurhayati Bialangi Priana, Ari Prihandana, Sadar Purwana, Heri Rahmawati, Puput Saputra, Andika Perdana Saputra, Yuyus Subekti, Nuriska Sudarno Shobron, Sudarno Sujinah Sujinah Suparjo Suparjo Supriatna, Agus Supriyo Supriyo SYAMSUDAR, BANGBANG Wardana, Sajidi Widiyanto, Holisha Yarno, Yarno Zulhelmi, Zulhelmi