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All Journal IAES International Journal of Robotics and Automation (IJRA) Jurnal Konstruksia OPERATION EXCELLENCE: Journal of Applied Industrial Engineering Kilat Power Plant TEKNOLOGIA JURNAL CRANKSHAFT Matrik : Jurnal Manajemen dan Teknik Industri Produksi TERANG : Jurnal Pengabdian Pada Masyarakat Menerangi Negeri Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Jurnal Teknik Informatika (JUTIF) Jurnal Pengabdian Masyarakat (ABDIRA) Jurnal Penelitian Sekolah Tinggi Transportasi Darat International Journal of Innovation in Mechanical Engineering and Advanced Materials Equivalent: Jurnal Ilmiah Sosial Teknik JIPITI: Jurnal Pengabdian kepada Masyarakat
Chairat, Arief Suardi Nur
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Aerospace Engineering Agriculture, Biological Sciences & Forestry 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 Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Social Sciences Transportation Other

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Penyuluhan dan Pelatihan Pemanfaatan Limbah Perkebunan Kelapa Sawit Sebagai Sumber Energi Baru Terbarukan Arief Suardi Nur Chairat; Lia Nur Octavia; Hendri Hendri; Ade Caswito; Dyah Pratiwi Kusumastuti; Tri Wahyu Oktaviani Putri
Jurnal Pengabdian Masyarakat (ABDIRA) Vol 3, No 3 (2023): Abdira, Juli
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/abdira.v3i3.361

Abstract

At present energy sources are dominated by non-renewable materials which will run out over time, so it is important to introduce elements of society about renewable energy sources that can be obtained from the environment such as biomass from agricultural waste. Kampung Lantosan, Desa Gunung Bayu with a majority population of oil palm farmers as partners have not utilized organic waste when harvesting oil palm so that it accumulates and disturbs the comfort of the environment. PkM activities carried out in partner areas consist of counseling and training on the utilization of organic waste into energy. Through counseling and training activities regarding the processing of palm oil agricultural waste, partners have knowledge about the benefits of organic waste as an energy source and the ability to process organic waste into biopellets. The resulting biopellets are used as stove fuel or fuel in the gasification process to become syngas used by power plants. In addition to that, by utilizing the waste from oil palm agricultural crops, waste is reduced and the environment becomes cleaner.
Optimization of soybean distribution costs with the transportation method: a case in SME’s Chairat, Arief Suardi Nur; Caswito, Ade; Octavia, Lia Nur; Asnul, Nur Shania; Fauziah, Annisa; Bahasoan, Alisya Sulifianti
Operations Excellence: Journal of Applied Industrial Engineering Vol. 16, No. 1, (2024): OE March 2024
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2024.v16.i1.098

Abstract

The distribution of soybean raw materials is not only related to aspects of quality and smooth production of tofu making but can also influence cost efficiency to increase competitiveness. In this situation, the number of soybeans shipped, transportation costs per unit, and the choice of transportation service used are transportation model issues. This research aims to determine the cheapest cost of sending soybean raw materials from four agent locations to three tofu factory locations with a choice of two transportation services that can be adopted. The case studied is a case of unbalanced transportation with supply greater than demand. The method used is the application of a transportation model, with the Northwest Corner method to determine the initial base solution and the Modified Distribution method to optimize distribution costs for soybean raw materials in the context of tofu production supply. Based on data processing, the results showed that the first and second transportation services offered services with a total shipping cost of IDR 691,750 and IDR 605,250. Observation of these differences leads to the conclusion that the second transportation service offers the most optimal value for money. The research results provide additional knowledge for tofu makers in optimizing costs and delivery routes for soybean raw materials, supporting production continuity, and increasing competitiveness in an ever-changing market.
Implementasi Strategi Digital Marketing dalam Meningkatkan Daya Saing UMKM Caswito, Ade; Aulia, Annisa Risqina Putri; Aisal, Naufal Yurfana; Lisdiana, Lisdiana; Chairat, Arief Suardi Nur; Ridwan, Muhammad
JIPITI: Jurnal Pengabdian kepada Masyarakat Vol. 2 No. 3 (2025): Agustus 2025 - JIPITI: Jurnal Pengabdian kepada Masyarakat
Publisher : PT. Technology Laboratories Indonesia (TechnoLabs)

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

Abstract

Kegiatan pengabdian kepada masyarakat dilakukan pada UMKM bertujuan untuk mengimplementasikan strategi digital marketing dalam mengoptimalkan UMKM, yang bergerak dalam produksi produk lokal. Digital marketing, melalui sosial medial, SEO, dan iklan digital, diharapkan dapat meningkatkan jangkauan pasar UMKM. Metode yang digunakan adalah pengabdian kepada masyarakat (pengmas), dalam memberikan  kepada seluruh pengelola atau pelaku UMKM. Hasil pada pengabdian kepada masyarakat ini menunjukkan bahwa penerapan strategi digital marketing berhasil meningkatkan visibilitas merk dan menarik pelanggan, yang berdampak pada peningkatan penjualan. Kesimpulannya, strategi digital marketing efektif dalam mengoptimalkan kinerja UMKM dan meningkatkan kontribusinya terhadap perekonomian lokal, dengan saran untuk melanjutkan pengembangan dan penerapan teknologi digital di masa depan.
Pengembangan Ekonomi Kerakyatan Berbasis Teknologi di Lingkungan RW 04 Palmerah-Jakarta Barat Nur Chairat, Arief Suardi; Wahyunungsih, Utami; Rasyidi, Lili; Desiawan, Victor Assani; Kusumastuti, Dyah Pratiwi; Caswito, Ade
Jurnal Pengabdian Masyarakat (ABDIRA) Vol 4, No 1 (2024): Abdira, Januari
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/abdira.v4i1.437

Abstract

In 2018, RW 04 Palmerah, located in the administrative region of Palmerah, West Jakarta, was designated as one of the slum neighborhoods under Jakarta Governor Regulation No. 90. A critical aspect of this regulation addressed the issues of plastic waste and community economic empowerment. Within the context of Community-Based Economic Development through Technology in RW 04 Palmerah, community engagement initiatives aimed to address plastic waste management and enhance economic well-being through technological interventions. Employing a participatory approach, the implementation over two months not only cultivated a clean culture but also effectively processed and utilized plastic waste within the community. Despite modest and fluctuating returns, the initiative significantly contributed to the sustainable model of community-based economic development through technology in the local area, serving as a guiding framework for similar endeavors in other regions.
Pengenalan Energi Baru Terbarukan melalui Media Pembelajaran Interaktif pada Tingkat Pendidikan Dasar Chairat, Arief Suardi Nur; Ridwan, Muhammad; Prayudi, Prayudi; Sany, Nasril; Dody, Dody; Kusumastuti, Dyah Pratiwi; Vaza, Hery; Asnul, Nur Shania
Jurnal Pengabdian Masyarakat (ABDIRA) Vol 6, No 1 (2026): Abdira, Januari
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/abdira.v6i1.1216

Abstract

Global warming has become a major concern due to its impacts on the environment and human life. One way to reduce these impacts is by increasing the use of renewable energy. Introducing the concept of renewable energy at the elementary school level is expected to foster students’ awareness and understanding of the importance of using clean energy. This Community Service (PkM) program aims to enhance the knowledge and understanding of students and teachers at SD Islam Al Azhar 5, West Jakarta, regarding solar-based renewable energy through an interactive learning approach. The activities were carried out in several stages, including survey, socialization, training, evaluation, and sustainability. The socialization session was delivered through material presentations supported by engaging visual media, while the training involved assembling toys powered by solar energy. The results showed strong enthusiasm, improved understanding of renewable energy among students and teachers, and enhanced teacher skills in implementing interactive learning. This program also encouraged greater awareness of the importance of adopting renewable energy in daily life.
PEMANFAATAN LIMBAH PELEPAH SAWIT SEBAGAI BAHAN BAKU PEMBUATAN PRODUK EGG TRAY RAMAH LINGKUNGAN Ridwan, Muhammad; Nur Chairat, Arief Suardi; Okvasari, Rudina; Putri, Salwa Adisa; Pangaribuan, Diego Kevin
JURNAL CRANKSHAFT Vol. 8 No. 4 (2025): Jurnal Crankshaft Vol. 8 No. 4 (2025)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v8i4.16138

Abstract

Meningkatnya kebutuhan akan kemasan ramah lingkungan mendorong inovasi pemanfaatan limbah biomassa sebagai bahan alternatif pengganti plastik dan kertas daur ulang. Penelitian ini bertujuan untuk mengembangkan dan mengevaluasi produk egg tray berbahan dasar pelepah kelapa sawit sebagai solusi kemasan telur yang biodegradable dan berkelanjutan. Proses pembuatan meliputi tahap pencacahan pelepah sawit, pembentukan pulp dengan perekat alami berbasis tapioka, pencetakan manual, dan pengeringan tanpa bahan kimia sintetis sesuai prinsip green processing. Karakteristik produk diuji melalui uji kekuatan tumpuk untuk menilai performa mekanik. Hasil penelitian menunjukkan bahwa egg tray berbahan pelepah sawit memiliki tekstur padat, berwarna coklat alami, dan ketebalan rata-rata 4,5 mm. Uji ketahanan tumpuk menunjukkan tray mampu menahan beban hingga 4 kg tanpa deformasi permanen, dengan defleksi maksimum sebesar 2,8 mm, menandakan sifat elastis dan distribusi gaya yang baik. Secara keseluruhan, produk menunjukkan kekuatan tekan yang sebanding dengan tray konvensional berbahan pulp kertas dan berpotensi digunakan sebagai alternatif kemasan telur ramah lingkungan. Penelitian ini menegaskan potensi pelepah sawit sebagai bahan biomassa terbarukan yang dapat mendukung pengembangan ekonomi sirkular di sektor agroindustri Indonesia.Kata kunci: pelepah sawit, egg tray, biomassa, kemasan ramah lingkungan, stacking test
ANALISIS STABILITAS DAN DURABILITAS CAMPURAN PADA ASPAL MODIFIKASI MENGGUNAKAN POLIMER LDPE Handayasari, Indah; Kusumastuti, Dyah Pratiwi; Chairat, Arief Suardi Nur
Jurnal Penelitian Sekolah Tinggi Transportasi Darat Vol 12 No 1 (2021): June 2021
Publisher : Politeknik Transportasi Darat Indonesia - STTD Bekasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55511/jpsttd.v12i1.563

Abstract

Salah satu upaya dalam menghasilkan aspal yang memiliki tingkat keawetan yang tinggi yaitu memodifikasi aspal dengan memanfaatkan polimer sintetis sebagai bahan campuran. Polimer mampu menambah tingkat durabilitas perkerasan dari berbagai macam kerusakan, seperti deformasi permanen, retak akibat perubahan temperatur, kerusakan material, serta pelepasan material. Pengujian ketahanan campuran AC-WC menggunakan plastik kresek jenis polimer LDPE (Low density polyethylene) terhadap air melalui perendaman dalam air bertemperatur 60oC selama 30 menit, 24 jam, 48 jam dan 72 jam dengan sistem menerus serta variasi limbah kantong plastik LDPE direncanakan sebesar 0%, 1%, 3%, 5%, 7%, 9% dan 11%. Berdasarkan hasil penelitian didapatkan bahwa nilai stabilitas tertinggi setelah dilakukan perendaman secara menerus terdapat pada variasi kadar limbah kantong plastik LDPE 5% yaitu sebesar 965,360kg dengan nilai durabilitas atau indeks kekuatan sisa sebesar 92,46% pada perendaman selama 72 jam.
Robust and computationally efficient single-input fuzzy logic‑enhanced nonlinear PID control for a pneumatic servo system Khairun Najmi Kamaludin; Lokman Abdullah; Syed Najib Syed Salim; Zamberi Jamaludin; Mohd Nazmin Maslan; Mohd Shahrieel Mohd Aras; Mohd Fua’ad Rahmat; Arief Suardi Nur Chairat
IAES International Journal of Robotics and Automation (IJRA) Vol 15, No 2: June 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijra.v15i2.pp397-414

Abstract

Precision and robustness are essential for any automation actuator. Due to the nonlinear characteristics of the pneumatic actuator, advanced nonlinear control algorithms provide exceptionally precise control but are sensitive to disturbances. Owing to this factor, an adaptive element is embedded into the control structure to obtain a robust strategy by integrating single input fuzzy logic (SIFL) with the nonlinear hyperbolic PID controller (T NPID). SIFL characterizes a variable rate in the function while reducing computational complexity against an equivalent classical fuzzy logic (FL) by up to 36.5%. The signed distance SIFL selection is also a novel structure that has never been applied in the pneumatics control field. The robustness of the controller is analysed via dynamic stiffness and validated by applying multiple load disturbances. The improvement gained for the T NPID+SIFL’s transient rise time and multi-step IAE index under no load disturbance is 71.381% and 68.854%, respectively, compared with a classical sliding mode controller (SMC). Under a maximum 9 kg load disturbance (limited within the scope of this research), the T NPID+SIFL’s IAE index performance obtained an improvement of 68.638%. When compared with a baseline nonlinear hyperbolic PID (NH PID) strategy under no load disturbance, the steady state error and overshoot also improved by 74.797% and 15.385%, respectively. The results show outstanding performance compared with a robust controller as well as a similar baseline nonlinear PID control. Asymptotic stability analysis, such as the asymptotic tracking region (ATR), will be able to consolidate the trajectory tracking performance together with the experimental validation of a smooth trajectory, simulating a real-time robotic actuator under movement control.
Impact of Extended Intervals on Diesel Engine Performance with 15W-40 DH1 Lubricant Oil Wiwit Suprihatiningsih; Arief Priyanto; Nurato Nurato; Arief Suardi Nur Chairat; Denny Prumanto
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol. 6 No. 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v6i2.25014

Abstract

Engine lubricant oil is crucial for minimizing friction between moving components within an engine, directly influencing the engine's reliability and lifespan. Determining the appropriate oil replacement intervals is essential, as extending these intervals necessitates more rigorous monitoring of both oil quality and engine condition. This study investigated the performance of SAKAI 15W-40 DH1 engine oil in the SAKAI Vibrating Roller SV526 over varying operational periods: 125 hours, 250 hours, 375 hours, and 500 hours. The research involved analyzing oil samples for viscosity, metal additives, total base number (TBN), and contaminants using Fourier Transform Infrared Spectroscopy (FTIR). Additionally, key engine performance indicators, including fuel consumption, valve clearance, and compression pressure, were measured. The findings revealed a gradual decrease in oil viscosity from 13.48 cSt to 11.56 cSt, approaching the minimum acceptable threshold of 11.45 cSt. Concurrently, the Fe content in the oil increased to 11 ppm, indicating wear, while the valve clearance in cylinder number three expanded to 0.48 mm, and compression pressure dropped from 31 kg/cm² to 28 kg/cm². Despite these changes, the oil remained within the standard operational limits, and the engine continued to perform adequately. However, based on the observed trends, extending the oil replacement interval to 500 hours cannot be conclusively recommended, as the oil's condition and engine performance may begin to decline beyond this point.
Comparative Sentiment Analysis of YouTube Comments on Indonesia's Electric Vehicle Incentive Policy Using TF-IDF and IndoBERTweet Models Chairat, Arief Suardi Nur; Rizal, Randi; Himawan, Hidayatulah
Jurnal Teknik Informatika (Jutif) Vol. 6 No. 6 (2025): JUTIF Volume 6, Number 6, Desember 2025
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jutif.2025.6.6.5499

Abstract

Indonesia’s battery electric vehicle (KBLBB) incentives aim to accelerate low-carbon mobility, yet public reactions regarding affordability, charging infrastructure readiness, and subsidy equity remain highly heterogeneous. This research systematically compares classical machine learning and transformer-based models for classifying sentiment in 1,516 YouTube comments discussing the incentive policy and broader EV ecosystem. Comments are collected via web scraping and processed through filtering, case folding, normalization, tokenization, stopword removal, stemming, lexicon-based sentiment labelling, TF-IDF bigram vectorization, random oversampling, and hyperparameter optimization with GridSearch. Support Vector Machine and Random Forest serve as baseline models, while Logistic Regression with TF-IDF bigram and IndoBERTweet represent advanced approaches that exploit richer feature representations. Results show that the baseline models achieve around 65–66% accuracy, Logistic Regression improves performance to 88%, and IndoBERTweet attains the highest accuracy of 94% with balanced precision, recall, and F1-score across sentiment classes. Sentiment distribution indicates that 63.3% of comments are negative, dominated by concerns over limited charging networks, high upfront costs, and perceived unfairness of public subsidies, while 36.7% of comments highlight support for cleaner transportation, technological innovation, and national industrial competitiveness. These findings demonstrate that transformer-based contextual embeddings substantially enhance sentiment classification for noisy Indonesian social media text and provide a scalable informatics tool for continuous monitoring of EV policy reception. The resulting empirical evidence can inform more targeted refinements of incentive design, infrastructure planning, and communication strategies, thereby supporting inclusive, data-driven, and sustainable KBLBB adoption across diverse demographic groups and evolving policy scenarios nationwide over time.
Co-Authors Ade Caswito Ade Caswito Adelia Syahputri, Nazwa Adisa Putri, Salwa Agus Wibawa Aisal, Naufal Yurfana Annisa Fauziah, Annisa Arief Priyanto Asnul, Nur Shania Aulia, Annisa Risqina Putri Bahasoan, Alisya Sulifianti Dede Rohmat Denny Prumanto Desiawan, Victor Assani Desylia Fitria Nurhadi Dody, Dody Elizabeth Pintauli Hutapea Endah Lestari Hendri Hendri Hidayatulah Himawan I Nyoman Adi Putra Indah Handayasari, Indah Irma Sepriyanna Jasmid Edy Kevin Pangaribuan, Diego Khairani, Adilla Khairun Najmi Kamaludin kustanrika, irma wirantina Kusumastuti, Dyah Pratiwi Lia Nur Octavia Lili Rasyidi Lisdiana Lisdiana Lokman Abdullah Michiel Martin Rumondor Mohd Fua’ad Rahmat Mohd Nazmin Maslan Mohd Shahrieel Mohd Aras Muhammad Ridwan Muhammad Ridwan Muhammad Sofyan Nasril Sany Nofirman, Nofirman Nurato Pangaribuan, Diego Kevin Prayudi Prayudi Priyanto, Arief Prumanto, Denny Putri, Salwa Adisa Rizal, Randi Roswati Nurhasanah Rudina Okvasari Sely Karmila Sumayya Nurlaily Surahman, Ganda Syed Najib Syed Salim Tri Wahyu Oktaviana Putri Tri Wahyu Oktaviani Putri Utami Wahyuningsih Vaza, Hery Vendy Antono Vendy Antono Wahyunungsih, Utami Wati Asriningsih Pranoto Wiwit Suprihatiningsih Zamberi Jamaludin