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All Journal International Journal of Renewable Energy Development ELKHA : Jurnal Teknik Elektro Jurnal Teknologi Informasi dan Ilmu Komputer Jurnal Fisika Unand PROSIDING SEMINAR KIMIA E-Dimas: Jurnal Pengabdian kepada Masyarakat Jurnal Geocelebes Jurnal Inotera Fair Value: Jurnal Ilmiah Akuntansi dan Keuangan Mudir : Jurnal Manajemen Pendidikan Indonesian Journal of Electrical Engineering and Computer Science Eco-Iqtishodi : Jurnal Ilmiah Ekonomi dan Keuangan Syariah E-Coops-Day : Jurnal Ilmiah Abdimas Jurnal IPTEK Bagi Masyarakat Koaliansi PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Progressive Physics Journal IKHLAS: Jurnal Pengabdian Dosen dan Mahasiswa Jurnal Ilmu dan Inovasi Fisika InSTEM ANDIL Mulawarman Journal of Community Engagement PESHUM
Dadan Hamdani, Dadan
Program Studi Fisika FMIPA Universitas Mulawarman Jl. Barong Tongkok No.4 Kampus Gn. Kelua Samarinda 75123
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Socialization of Making Egg Shell Powder as a Water Purifying Material in Senoni Village, Sebulu District, Kutai Kartanegara Regency Zarkasi, Ahmad; Ratnasari Putri, Erlinda; Nurhanafi, Kholish; Hamdani, Dadan; Perdana, Akbar; Nurohman, Ali; Munir, Rahmawati
Jurnal Inovasi Sains dan Teknologi untuk Masyarakat Vol. 1 No. 2 (2023): November
Publisher : Faculty of Mathematics and Natural Sciences, University of Jember. Jl. Kalimantan No.37, Krajan Timur, Jemberlor, Kec. Sumbersari, Jember Regency, East Java 68121

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/instem.v1i2.463

Abstract

The production of eggshell powder as a water purifier has the potential to be utilized in Senoni Village, Sebulu District, Kutai Kartanegara Regency, East Kalimantan. Based on the results of initial observations the majority of residents there use Mahakam river water for daily needs where the water is still classified as cloudy. The purpose of implementing Community Service Activities is through socializing the production and utilization of eggshell powder as a water purifier and providing assistance through training activities on the powder as a water purifier. The approach method used were the lecture method, demonstration method, and mentoring method. Furthermore, the stages of socialization implementation as a solution to overcome the problems are as follows: 1) sample preparation stage, 2) socialization preparation stage, 3) implementation stage, and 4) evaluation stage. The results of the activity showed that an increase of 84% of participants knew the procedure for making eggshell flour, and 60% felt that it was very easy to make so it was very possible for participants to make it independently at their respective homes. This activity went well and smoothly without any significant problems. Participants are interested and want to implement the new knowledge that has been obtained through this socialization method, scientific findings results, and a short conclusion. The abstract should only be typed in one paragraph and one-column format.
Penciptaan Nilai Perusahaan: Spesial Isu Merger dan Akuisisi Perusahaan Publik di Indonesia Perwito, Perwito; Wibowo, Lili Adi; Hamdani, Dadan
Fair Value: Jurnal Ilmiah Akuntansi dan Keuangan Vol. 3 No. 1 (2020): Fair Value : Jurnal Ilmiah Akuntansi dan Keuangan
Publisher : Departement Of Accounting, Indonesian Cooperative Institute, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (277.829 KB) | DOI: 10.32670/fairvalue.v3i1.135

Abstract

Creating corporate value is the company's main goal, making various strategic decisions continuously sothat it has a positive impact on the company and its esteem on the prosperity of shareholders. This studyaims to analyze the Creation of Company Value through Mergers and Acquisitions.This study uses a quantitative descriptive verification approach, the object of research in public sectorbanking companies in Indonesia. To know the difference in the value of the company before and after M &A by using Paired sample T test.The results showed that the asset restructuring strategy through Mergers and Acquisitions did not have apositive and significant impact on corporate value creation. This shows the absence of corporate financialsynergy through mergers and acquisitions. Further research related to asset restructuring throughcorporate actions; Initial Public Offering (IPO), right issue, Leverage Buy-out..
Analisis Parameter Fisik Kualitas Air pada Depot Air Minum Isi Ulang (DAMIU) DI Kecamatan Tanjung Redeb Yanti, Nuri; Wardhani, Pratiwi Sri; Mislan, Mislan; Munir, Rahmawati; Hamdani, Dadan
Progressive Physics Journal Vol 4 No 2 (2023): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ppj.v4i2.1073

Abstract

DAMIU (Refill Drinking Water Depot) is an individual or group business that manages refill drinking water for public consumption directly filled on the spot and not in packaged form, this water must meet the standardization of drinking water quality requirements with one of its parameters, namely physical parameters that do not directly related to health, namely temperature, pH, total dissolved solids and electrical conductivity. This research was conducted to determine the quality of refill drinking water in Tanjung Redeb Subdistrict, whether it complies with the Regulation of the Minister of Health of the Republic of Indonesia Number 492/MENKES/PER/IV/2010 concerning drinking water quality requirements and to determine the effect of the duration of water storage on drinking water quality with parameters physical. This research was conducted in Tanjung Redeb District, Berau Regency and was carried out with 2 different water sources, namely drilled wells and PDAM. Water quality is measured using a TDS meter. Based on the research that has been done, the results of measuring the quality of refill drinking water in Tanjung Redeb District, Berau Regency, namely the water quality meets the standardization of the Regulation of the Minister of Health of the Republic of Indonesia Number 492/MENKES/PER/IV/2010 concerning drinking water quality requirements and the result is that the storage time for 15 days had an effect on changes in the values ​​of the parameters pH, TDS and DHL and even though they were stored for 15 days the quality still met drinking water quality standards while the temperature parameter had no effect.
Optimizing carrier transport properties in the intrinsic layer of a-Si single and double junction solar cells through numerical design Prayogi, Soni; Hamdani, Dadan; Darminto, Darminto
Indonesian Journal of Electrical Engineering and Computer Science Vol 37, No 1: January 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v37.i1.pp69-77

Abstract

This research aims to improve the performance of a-Si: H solar cells, particularly in terms of carrier transport properties, through a numerical design approach utilizing AFORS-HET simulation software. By performing a series of rigorous computer simulations, we explore the potential regulation of the intrinsic layer thickness, carrier mobility, loading factor, and density of states (DoS) distribution in the solar cell's intrinsic layer. Recombination losses are reduced, and light absorption efficiency is significantly increased when the intrinsic layer thickness is adjusted, as shown by simulation findings. Moreover, reduction of transit times and enhancement of the total efficiency of the solar cells depend on increased carrier mobility. Parameters can be adjusted to attain optimal performance under various operating situations by adjusting the DoS and load factors. Furthermore, the simulations provide insightful information about the interactions between the junctions in solar cells with double junctions. Our results of this research provide an important contribution to efforts to develop more efficient and sustainable a-Si: H solar cells and emphasize the importance of numerical design approaches in photovoltaic technology.
Sintesis Adsorben Ampas Teh sebagai Penyerap Ion Logam Berat Timbal dalam Air Perdana, Akbar; Zarkasi, Ahmad; Hamdani, Dadan; Natalisanto, Adrianus Inu; Munir, Rahmawati
Progressive Physics Journal Vol. 5 No. 2 (2024): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ppj.v5i2.1026

Abstract

Heavy metal pollution is still a serious problem today. One method that can be used to remove heavy metal content from water is the adsorption method. In the adsorption method, the choice of adsorbent is very important to optimize the adsorption process. One of the materials that can be used as an adsorbent is tea waste. Tea waste contains cellulose, which can be used to bind heavy metal ions. This research was conducted to synthesize adsorbents using tea waste and then test their ability to adsorb lead ions. The adsorbent synthesis process is divided into several stages, namely washing, drying, refining, soaking in HCl solution, and drying again. The results of the adsorption tests conducted found that the tea waste adsorbent could remove 99% of the lead metal ion content in the water. The conclusion from these results is that the synthesis process has succeeded in making tea waste adsorbent that can adsorb lead ions in water.
Koperasi Multipihak : Terobasan Baru dalam Pengembangan Koperasi Modern Hamdani, Dadan
Koaliansi : Cooperative Journal Vol. 4 No. 2 (2025): Koaliansi : Cooperative Journal
Publisher : Universitas Koperasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32670/koaliansi.v4i2.5064

Abstract

Multiparty cooperatives are an innovation in cooperative management in Indonesia which was initiated through the Minister of Cooperatives and Small and Medium Enterprises Regulation Number 8 of 2021. This research aims to analyze the characteristics, benefits and challenges of this cooperative model in the context of the modern economy. The method used is normative juridical with a case study approach and literature analysis. The research results show that multy stakeholder cooperatives involve various stakeholders, including individuals, organizations, government, and the private sector, who collaborate to achieve common goals. This model not only increases product competitiveness but also strengthens social networks among members. However, challenges such as differences in interests and efficient management of resources need to be overcome to ensure the survival of cooperatives.
Manajemen Pengendalian Risiko dalam Upaya Mengurangi Non-Performing Loan Koperasi Simpan Pinjam di Kabupaten Sumedang Hidayat, Udin; Hamdani, Dadan
E-Coops-Day Vol. 6 No. 1 (2025): Vol. 6 No. 1 (2025): E-Coops-Day : Jurnal Ilmiah Abdimas
Publisher : LPPM Universitas Koperasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32670/ecoopsday.v6i1.5178

Abstract

Risk control management in an effort to reduce Non-Performing Loans (NPL) in the Sumedang Regency Savings and Loans Cooperative (KSP) was carried out for two days involving 30 participants from 15 cooperatives. This activity aims to increase the understanding and skills of KSP administrators in managing risks that can affect the financial health of cooperatives. The training, which was guided by Udin Hidayat as trainer and Dadan Hamdani as material writer, used learning methods that included theory, practice and group discussions. Evaluation results showed a significant increase in participants' understanding of risk management, with the average pre-test score increasing from 60% to 85% after the training. Participants succeeded in developing several risk mitigation strategies, such as improving the credit selection process and developing financial education programs for cooperative members. Feedback from participants shows that this training is very relevant and useful for KSP management. Based on the results of the training, it is recommended that KSP carry out follow-up actions through regular mentoring and evaluation sessions to ensure the implementation of the strategies that have been prepared. Apart from that, the development of continuing education programs for cooperative members is also highly recommended to increase awareness of financial responsibility. Thus, it is hoped that this training can contribute to reducing NPLs and improving the financial health of KSPs in Sumedang Regency in a sustainable manner.
Sosialisasi Pembuatan Ecoenzyme sebagai Solusi Alami untuk Kebersihan Lingkungan di Kelurahan Bontang Kuala Munir, Rahmawati; Hamdani, Dadan; Hamdi, M. Khilal; Murtadha, Nayla Izzatil; Munir, Rahmiati
ANDIL Mulawarman Journal of Community Engagement Vol. 2 No. 2 (2025): ANDIL Mulawarman J Comm Engag
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LP2M), Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/andil.v2i2.1987

Abstract

ABSTRACT: This community service activity aims to enhance environmental awareness and human resource capacity through the socialization of ecoenzyme as a natural solution for environmental cleanliness. The activity was conducted in Bontang Kuala Village, North Bontang District, with a focus on the production and utilization of ecoenzyme as an eco-friendly solution. The methods used consisted of three main stages: preparation of materials and tools for making ecoenzyme, presentation of the importance of environmental cleanliness, and hands-on practice of ecoenzyme production. The results of this activity showed an increase in community understanding of environmental cleanliness and the potential use of ecoenzyme in daily life. Participants were able to independently practice making ecoenzyme and are expected to apply it to maintain environmental cleanliness in Bontang Kuala Village.
Peningkatan Kompetensi Guru Fisika Tingkat SMA dalam Eksperimen Fisika Menggunakan Software Video Tracker Natalisanto, Adrianus Inu; Hamdani, Dadan; Muliyono, Suhadi; Intifadhah, Sahara Hamas; Munir, Rahmawati; Salamah, Alifah Balqis
ANDIL Mulawarman Journal of Community Engagement Vol. 2 No. 3 (2025): ANDIL Mulawarman J Comm Engag
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LP2M), Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/andil.v2i3.2078

Abstract

This community service activity aims to enhance the competence of high school physics teachers in East Kalimantan in using the Video Tracker software to support physics experiments. A total of 20 physics teachers participated with very high enthusiasm. The methods used in this activity included the Lecture Method, where participants were introduced to the basic theories and concepts of motion that can be analyzed using Video Tracker, the Demonstration Method, where the direct application of the software was shown to the participants, and the Assistance Method, where participants were guided step-by-step in conducting physics experiment simulations using Video Tracker. The results showed that teachers improved their skills in analyzing motion data using technology, which is expected to enrich the teaching process of physics in schools.
SENTRIN- PERANCANGAN APLIKASI BERBASIS WEBSITE UNTUK EDUKASI DAN PENGELOLAAN PERTANIAN BIOFARMAKA MENGGUNAKAN METODE FAST (FRAMEWORK FOR THE APPLICATION SYSTEM THINKING) Aditya, Bayu Rima; Hamdani, Dadan
Jurnal Teknologi Informasi dan Ilmu Komputer Vol 12 No 3: Juni 2025
Publisher : Fakultas Ilmu Komputer, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jtiik.2025129440

Abstract

Permasalahan dalam sektor pertanian biofarmaka di Indonesia saat ini mencakup beberapa aspek penting yang menghambat perkembangan dan produktivitasnya. Salah satu masalah utama adalah kurangnya infrastruktur dan akses terhadap teknologi pertanian modern. Banyak petani masih menggunakan metode tradisional karena keterbatasan teknologi. Untuk mengatasi hal ini, dikembangkanlah FocketFarm, sebuah platform edukasi berbasis web untuk pertanian greenhouse. Tujuannya adalah memberikan pengetahuan dan keterampilan praktis dalam pertanian greenhouse kepada pengguna. Pengguna FocketFarm dapat memperoleh informasi tentang teknik bertani, perawatan tanaman, pengelolaan sumber daya, dan praktik-praktik pertanian yang berkelanjutan. Untuk mengembangkan website FocketFarm, yaitu dengan menggunakan metode Framework for the Application of System Thinking (FAST) tujuan nya adalah untuk menyusun desain sistem secara lebih efisien dan sesuai dengan tujuan yang ditetapkan. Webste FocketFarm dapat memperoleh informasi tentang teknik bertani di dalam greenhouse, perawatan tanaman, pengelolaan sumber daya, dan praktik-praktik pertanian yang berkelanjutan. Dengan antarmuka yang mudah digunakan, FocketFarm memungkinkan akses yang intuitif bagi pengguna dari latar belakang yang beragam. Dengan demikian, FocketFarm berfungsi sebagai alat efektif dalam meningkatkan pemahaman dan keterampilan dalam pertanian greenhouse melalui platform web yang mudah diakses   Abstract  Chess has been estimated to have around 1043 possible positions. This number surpasses the computing ability of any computer available, therefore, building a chess engine that considers every possible position is deemed impractical. Currently, the use of neural network in chess engine development is on the rise and has been delivering promising results since the introduction of Google DeepMind’s AlphaZero in 2017. This research aims to bring a new potential approach to the field of neural network based chess engine development by introducing Deeplefish chess engine that uses a Long Short Term Memory (LSTM) model as move generator. Trained on more than 57.000 games broken down into more than 1.200.000 positions, the model is trained to predict the next move played by white for a given sequence of moves. The model achieved a loss of 3.01 and an Average Centipawn Loss (ACPL) of 219 on the validation set. Deeplefish achieved 2 wins, 72 losses, and 10 draws on the testing, showing a lack of board and contextual awareness. This unsatisfactory results are likely due to the subjectivity of the data to the player’s way of thinking, resulting in lack of significant move pattern to be learned by the model.
Co-Authors Aditya, Bayu R Adrianus Inu Natalisanto Ahmad Zarkasi akbarri, Destri amelia Alamsyah, Andi Alamsyah, M Noor Amanda, Nia Andriana , Riska Dwi Anugro, Fawwaz Apto Ar Rasyid, Muhammad Dhia Asmaidi As Med Cahyono, Yoyok D Darminto Darminto . Ekaviyanti, Ekaviyanti Erlinda Ratnasari Putri Fahmi Astuti, Fahmi Gatut Yudoyono Hafidz, Muhammad Fauzil Hamdi, M. Khilal Handayani , Indah Hidayati, Dian Igor Levi Satriani Ilmiah , Nurul Intifadhah, Sahara Hamas Khoiriyah Khoiriyah Kholis Nurhanafi Lambang Subagiyo Lili Adi Wibowo Mislan Muh. Darwis Muhammad Asep Apandi Munir, Rahmawati Munir, Rahmiati Murtadha, Nayla Izzatil Nanda Khoirunisa, Nanda Nur Khasanah Nurjamil Nurohman, Ali Perdana, Akbar Perwito, Perwito Prayogi, Soni Rahmah , Assangadatur Rahmawati, Rahmawati Rahmawati, Ricky Rusnanda, Resky Saharto Silaban Salamah, Alifah Balqis Sari, Syaharani Puspita Simanjuntak, Dani Josafat Suhadi Muliyono Syaripuddin Tarsisius Susilo Udin Hidayat Wahidah Wahidah Wardhani, Pratiwi Sri Yanti, Nuri Yuki N Nasution