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All Journal Jurnal Teknologi Jurnal Spektra Journal of Physics: Theories and Applications Jurnal Bina Mulia Hukum Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Eklektik : Jurnal Pendidikan Ekonomi dan Kewirausahaan TANJUNGPURA LAW JOURNAL Jambe Law Journal Pancasila and Law Review Journal Research in Islamic Education PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Legal Protection for the Partnership Agreement Parties Jurnal Ilmiah Hukum dan Hak Asasi Manusia JKMP (Jurnal Kebijakan dan Manajemen Publik) AKHLAQUL KARIMAH: Jurnal Pendidikan Agama Islam Jurnal Nusantara Mengabdi Journal of Progressive Law and Legal Studies Komunita: Jurnal Pengabdian dan Pemberdayaan Masyarakat SCLS International Journal of Renewable Energy Development Prosiding Seminar Hukum Aktual Fakultas Hukum Universitas Islam Indonesia Indonesian Journal of Community Empowerment Al Iman: Jurnal Keislaman dan Kemasyarakatan Lex Scientia Law Review
Ikhsan Setiawan
Physics Departement, Faculty Of Mathematics And Natural Sciences Universitas Gadjah Mada, Sekip Utara BLS 21 Yogyakarta 55281 Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Public Health Social Sciences Other

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Pengaruh Diameter Leher Resonator Helmholtz Pada Alat Pemanen Energi Akustik (Acoustic Energy Harvester) Terhadap Daya Listrik Yang Dihasilkan Yuanita Fara Abdillah; Ikhsan Setiawan; Agung Bambang S Utomo
Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) 2019: Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) 2019
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (992.986 KB) | DOI: 10.20961/prosidingsnfa.v4i0.35922

Abstract

Abstract: Acoustic energy (sound) that is wasted in environment has potential to be alternative energy to produce electrical energy. This paper presents an experimental study of the effect of Helmholtz resonator neck diameter on the output electric power of an acoustic energy harvester. The cavity of the resonators is a cube-shaped with size of 30 cm ´ 30 cm ´ 30 cm made of acrylic. The resonator neck is cylindrical and has 8 cm length with four diameter variations of 5,2 cm, 6,9 cm, 8,2 cm, and 10,4 cm. A 6-inches subwoofer loudspeaker is used as acoustic transducers that converts sound into electric current. The experiment is performed by giving sound with SPL of 90 dB in the frequency range of (20-150) Hz. The output rms voltages from the loudspeaker are measured at a 5.0 ohm load resistor. It is found that there are always two peaks in the frequency spectrum that provide maximum electric power, namely at 27 Hz and 55 Hz. These peak frequencies do not depend on the neck diameter. On the other hand, the larger the neck diameter, the higher the generated electrical power. The highest rms electric power produced are 3.03 mW and 2.25 mW at the first and second peaks, respectively.Abstrak: Energi akustik (bunyi) yang terbuang di lingkungan memiliki potensi menjadi salah satu energi alternatif untuk menghasilkan energi listrik. Makalah ini memaparkan tentang studi eksperimental pengaruh diameter leher resonator Helmholtz pada alat pemanen energi akustik terhadap daya listrik yang dihasilkan. Rongga resonator Helmholtz berbentuk kubus berukuran 30 cm ´ 30 cm ´ 30 cm terbuat dari akrilik. Leher resonator berbentuk silinder sepanjang 8 cm dengan empat variasi diameter yaitu 5,2 cm, 6,9 cm, 8,2 cm, dan 10,4 cm. Loudspeaker jenis subwoofer dengan diameter nominal 6 inci dipasang disisi belakang rongga resonator digunakan sebagai transduser akustik yang mengubah bunyi menjadi arus listrik. Eksperimen dilakukan dengan memberikan gelombang bunyi dengan SPL (sound pressure level) 90 dB dalam rentang frekuensi (20 - 150) Hz dan mengukur tegangan listrik rms keluaran dari loudspeaker pada resistor beban 5,0 ohm. Diperoleh bahwa selalu terdapat dua puncak spektrum frekuensi dengan daya listrik maksimum, yaitu pada 27 Hz dan 55 Hz. Frekuensi-frekuensi puncak ini tidak bergantung pada diameter leher resonator. Di sisi lain, ditemukan bahwa diameter leher yang semakin besar menghasilkan daya listrik yang semakin besar. Daya listrik rms terbesar yang dihasilkan (pada diameter 10,4 cm) adalah 3,03 mW dan 2,25 mW masing-masing pada puncak pertama dan puncak kedua.
Fiduciary: Financing Guarantees and Ownership in the Business Akbarina, Farida; Muslim, Shohib; Setiawan, Ikhsan; Khoirunnisa, Rizqi
Journal of Progressive Law and Legal Studies Том 2 № 03 (2024): Journal of Progressive Law and Legal Studies
Publisher : PT. Riset Press International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59653/jplls.v2i03.1122

Abstract

The concept of fiduciary is the transfer of material rights of an object based on trust, which often causes multiple interpretations. Ownership and control of a fiduciary guarantee object in various cases, it is not uncommon for disputes between creditors and debtors to occur in a fiduciary guarantee agreement because the creditor assumes that with the existence of executory rights as fiduciary recipients, the object of fiduciary guarantee is legally owned by the creditor so that the creditor has the right to take and sell the fiduciary guarantee object when the debtor defaults. Unilaterally, the debtor who considers that the object of the fiduciary guarantee is owned because the object is registered in his name so that the debtor can use the object freely, such as handing over to a third party or selling the object of the fiduciary guarantee unilaterally. The author employs normative legal research techniques. According to the study's findings, the debtor owns the Fiduciary Guarantee Object following the Law, and the debtor controls the collateral object for financial gain. A law should be made clearly and firmly to avoid conflicts between its articles. In the business world, a fiduciary is a security for the parties when funding is implemented. With this rights transfer, the fiduciary will have the power to make decisions while prioritizing other creditors.
CRIMINAL LAW POLICY IN BLASPHEMY ENFORCEMENT BASED ON RESTORATIVE JUSTICE Natamiharja, Rudi; Siswanto, Heni; Banjarani, Desia Rakhma; Setiawan, Ikhsan
Jurnal Bina Mulia Hukum Vol. 8 No. 1 (2023): Jurnal Bina Mulia Hukum Volume 8 Nomor 1 September 2023
Publisher : Faculty of Law Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23920/jbmh.v8i1.1178

Abstract

Policies for resolving religious blasphemy in Indonesia are regulated in Law Number 1/PNPS/1965 concerning the Prevention of Blasphemy of Religion and Article 156a of the Criminal Code. Sentences are often repressive and do not fulfill the value of justice. The formulation of the problem in this article is: what is the criminal law policy in the settlement of blasphemy and what kind of settlement model is chosen to handle the case. This research method is normative legal research with a statutory approach based on primary legal materials. The research results show that the imposition of punishment is the main solution. Meanwhile, the model chosen in the resolution of defamation of freedom of expression according to the concept of restorative justice uses an integrated approach that tries to implement penal and non-penal efforts simultaneously to fulfill justice for the perpetrators of defamation, including involving the role of the community through the Religious Communication Forum (FKUB). Suggestions that need to be conveyed are that criminal law policies are still being implemented, but harsh criminal sanctions are softened by using the concept of restorative justice, bearing in mind that not every case of blasphemy deserves a harsh sentence.
Guarding Privacy in the Digital Age: A Comparative Analysis of Data Protection Strategies in Indonesia and France Natamiharja, Rudi; Setiawan, Ikhsan
Jambe Law Journal Vol. 7 No. 1 (2024)
Publisher : Faculty of Law, Jambi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/home.v7i1.349

Abstract

Personal data protection is a critical issue in the contemporary digital era, marked by a significant rise in data collection and processing by both governmental and private entities. Indonesia, with its recently enacted Personal Data Protection Law, faces substantial challenges in implementation and enforcement. In contrast, France, as an EU member state, adheres to the General Data Protection Regulation (GDPR), widely regarded as the global benchmark for data protection. This study employs a comparative analysis to examine the legal frameworks, enforcement mechanisms, and data subjects' rights in Indonesia and France. Data were gathered through an analysis of legal documents, policy reports, and case studies on regulatory implementation in both countries. The results reveal that while there are notable differences in regulatory approaches and specifics, both countries aim to safeguard individuals' data rights. France's GDPR provides a more comprehensive and structured framework, whereas Indonesia is in the nascent stages of developing and refining its data protection regulations.
STUDI PENYIMPANAN ENERGI LISTRIK YANG DIHASILKAN OLEH ALAT PEMANEN ENERGI AKUSTIK (ACOUSTIC ENERGY HARVESTER) KE DALAM SUPERKAPASITOR Wibowo, Bagas Wahyu; Setiawan, Ikhsan
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 12 (2024): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2023
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1201.FA01

Abstract

Abstrak Alat pemanen energi akustik adalah alat untuk menangkap energi akustik atau kebisingan dari lingkungan dan mengkonversinya menjadi energi listrik. Penelitian ini mempelajari secara eksperimen penyimpanan energi listrik yang dihasilkan oleh alat pemanen energi akustik ke dalam superkapasitor. Alat pemanen energi akustik pada penelitian ini menggunakan loudspeaker jenis woofer model W8347-B/H dengan diameter 10,2 cm yang difungsikan terbalik untuk mengubah energi gelombang bunyi yang diterimanya menjadi energi listrik. Loudspeaker dilengkapi dengan resonator akustik seperempat gelombang dan rumahan yang berbentuk silinder. Sistem penyimpanan energi listrik terdiri dari transformator step-up, rangkaian penyearah arus listrik, dan superkapasitor 100F/2,7V. Eksperimen dilakukan dengan memberikan bunyi kebisingan berfrekuensi tunggal yang divariasi dari 51 Hz sampai 60 Hz, dengan tiga macam sound pressure level (SPL) yaitu 90 dB, 95 dB, dan 100 dB, kepada alat pemanen energi akustik selama 60 menit, dan mengukur tegangan superkapasitor seiring dengan waktu pengisian. Diperoleh bahwa terdapat frekuensi optimum pada 53 Hz yang mengasilkan laju pengisian maksimum. Selain itu, ditemukan bahwa kenaikan SPL dari 90 dB ke 100 dB menghasilkan kenaikan laju rerata pengisian kapasitor sekitar 4,6 kali lipat. Dengan frekuensi 53 Hz dan SPL 100 dB, pengisian selama 60 menit menghasilkan tegangan superkapasitor sebesar 294 mV. Kata-kata kunci: Konversi energi, energi akustik, kebisingan lingkungan, energi listrik, superkapasitor Abstract An acoustic energy harvester is a device used to capture acoustic energy or noise from the environment and convert it into electrical energy. This research experimentally studied the storage of electrical energy generated by an acoustic energy harvester into a supercapacitor. The acoustic energy harvester in this study utilized an inverted woofer-type loudspeaker model W8347-B/H with a diameter of 10.2 cm to convert the received sound wave energy into electrical energy. The loudspeaker was equipped with a quarter-wave acoustic resonator and a cylindrical housing. The electrical energy storage system consisted of a step-up transformer, a rectifier circuit, and a 100F/2.7V supercapacitor. The experiment was conducted by subjecting the acoustic energy harvester to a single-frequency noise ranging from 51 Hz to 60 Hz, with three different sound pressure levels (SPL) of 90 dB, 95 dB, and 100 dB, for 60 minutes, while measuring the supercapacitor voltage during the charging process. It was found that there was an optimum frequency at 53 Hz that yielded the maximum charging rate. Additionally, it was discovered that increasing the SPL from 90 dB to 100 dB resulted in approximately a 4.6 times increase in the average charging rate of the capacitor. With a frequency of 53 Hz and an SPL of 100 dB, a 60-minute charging duration produces a supercapacitor voltage of 294 mV. Keywords: Energy conversion, acoustic energy, environmental noise, electrical energy, supercapacitor
Prediction of Onset Temperature in Standing Wave Thermoacoustic Engine with Mesh Screen Stack Murti, Prastowo; Astuti, Wijayanti Dwi; Setiawan, Ikhsan; Irsyadi, Fakih; Hudati, Imroatul
Jurnal Teknologi Vol 16, No 1 (2024): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.16.1.27-32

Abstract

A thermoacoustic engine is a engine that converts thermal energy into acoustic energy, which can be used to generate electricity or cooling. This engine is attractive because it consists only of a stack, heat exchangers, and a resonator. The stack serves as the primary component for the energy conversion process and consists of porous materials like an array of stainless steel mesh screens. To generate the acoustic energy, a minimum temperature difference is necessary between the two sides of the stack, called the onset temperature difference. However, the calculation for prediction of onset temperature on the stack made of mesh screen has not been addressed. Therefore, the objective of this paper is to propose a method that can be used to estimate the onset temperature difference in standing wave thermoacoustic engine with stacks made of mesh screen arrays. The onset temperature difference is predicted numerically using linear stability theory and matrix transfer methods. Experimental verification is carried out by using standing wave thermoacoustic engine from pervious study. The results showed that the lowest onset temperature difference (TH - TC = 140ºC) is obtained when rh = 0.497 mm. Furthermore, the numerical and experimental onset temperature difference comparisons show a qualitative agreement, allowing the onset temperature prediction method to be used in designing standing wave thermoacoustic engines with stacks made of mesh screens.
LEGAL CERTAINTY FOR INVESTORS POST DECISION OF THE MK NO.91/PUUXVIII/2020 TOWARD ECONOMIC RECOVERY IN INDONESIA Setiawan, Ikhsan; Mahdewi, Risa
Sriwijaya Crimen and Legal Studies Volume 1 Issue 2 December 2023
Publisher : Faculty of Law Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28946/scls.v1i2.3046

Abstract

Investment can be an important instrument for Indonesia because natural resources are abundant, but only a small portion can be explored by Indonesian citizens because they are constrained by not having large capital. Exploration requires large funds; therefore, the government brings foreign investors to Indonesia. Investors need to be a very important part of realizing the nation's ideals for the welfare of the people, as stated in the preamble of the 1945 Constitution. Investment can be put to good use to enhance economic development and become one of the instruments to increase the nation's national income. For this reason, after the decision of the Constitutional Court No. 91/PUUXVIII/2022, it will have a good impact on Indonesia's economic recovery. This research is a normative juridical research based on applicable legal sources. This research was analyzed descriptively with a qualitative approach. The results of the research will explain the effectiveness of the Constitutional Court's decision and see its impact on the Indonesian economy.
Analysis of a standing wave thermoacoustic engine with multiple unit stages Murti, Prastowo; Setiawan, Ikhsan; Rosafira, Jihan Zeinyuta; Widyaparaga, Adhika; Astuti, Wijayanti Dwi; Biwa, Tetsushi
International Journal of Renewable Energy Development Vol 13, No 4 (2024): July 2024
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2024.60098

Abstract

The thermoacoustic engine is an eco-friendly technology capable of harnessing solar and waste energy for electricity generation, in conjunction with a linear alternator, and can function as a heat pump. This engine type holds significant appeal due to its simplistic design, devoid of any mechanical moving components, comprising only a stack sandwiched between heat exchangers within a resonator. When the temperature gradient across the stack reaches the critical threshold (onset temperature), the working gas undergoes spontaneous oscillation. Typically, a high onset temperature is necessary to induce gas oscillation in a thermoacoustic engine due to viscous losses within the system. A method to lower the onset temperature by increasing the number of unit stages consisting of stacks and heat exchangers so that the engine can utilize low-grade thermal sources has been developed to overcome this challenge. However, this method has only been applied to traveling-wave thermoacoustic engines. Its application in standing-wave engines, which offer a more compact and straightforward structure, remains unexplored. This research aims to examine how the number of unit stages in a standing-wave thermoacoustic engine influences the onset temperature and acoustic field. The onset temperature is estimated using a fundamental hydrodynamics equation and the investigation of the acoustic field throughout the engine using DeltaEC software. Results showed that the strategic positioning of multiple unit stages is essential to achieve a low onset temperature. The minimum onset temperature, approximately 92°C, is obtained when three- or four-unit stages are installed. Additionally, increasing the number of unit stages does not affect the acoustic impedance and phase difference between pressure and velocity in the stack, while simultaneously enhancing both acoustic power output and thermal efficiency.
Peningkatan Pemahaman Masyarakat Pondok Pesantren Al Kirom Hajimena terhadap Undang-Undang Nomor 18 Tahun 2019 tentang Pesantren Fakih, M.; Natamiharja, Rudi; Setiawan, Ikhsan; Panjaitan, Oksha Dwi Anugrah
Jurnal Nusantara Mengabdi Vol. 3 No. 3 (2024): Juni
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/jnm.v3i3.3315

Abstract

Purpose: This research aims to enhance the understanding of the Al Kirom Hajimena Islamic Boarding School community regarding the recently enacted Pesantren Law. Methodology: To achieve the objectives of this research, a multi-phase approach will be utilized, encompassing preliminary surveys, focus group discussions (FGDs), educational workshops, and post-intervention evaluations. Results: Following the implementation of Focus Group Discussions (FGDs) and educational workshops, a notable improvement in legal understanding among participants was observed. The active participation in FGDs helped identify critical knowledge gaps, while the workshops provided in-depth explanations that addressed existing concerns and confusion. Limitations: This research is within the scope of national law. Contribution: Al Kirom Hajimena Islamic Boarding School.
Arbitrase Internasional: Evaluasi Efektivitasnya sebagai Mekanisme Penyelesaian Sengketa Alternatif Natamiharja, Rudi; Panjaitan, Oksha Dwi Anugrah; Setiawan, Ikhsan
Jurnal Ilmiah Hukum dan Hak Asasi Manusia Vol. 4 No. 2 (2025): Januari
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/jihham.v4i2.3297

Abstract

Purpose: This paper aims to determine the extent to which international arbitration is of interest to the parties and how international arbitration can become an adequate alternative settlement. Methodology: This paper is included in the normative research type. The author uses an Analytical Approach. The data collection method in this paper is a literature study. After collecting all the necessary data, the next step is identifying and classifying the data. This research uses a qualitative analysis method. The qualitative analysis method analyzes secondary data that has been obtained to develop hypotheses to answer the problems in this paper coherently and logically. Results: International Arbitration interests the parties due to the advantages of arbitration, one of which is its unlimited relative competence; whether international arbitration is compelling depends on the interests of the parties in the dispute and whether they are fulfilled. Limitations: This research is within the scope of international law. Contribution: This study contributes to understanding the strengths and weaknesses of international arbitration as an alternative dispute resolution mechanism and provides practical recommendations for strengthening domestic and international legal frameworks to enhance its effectiveness
Co-Authors Abdul Chalim Abdul Chalim, Abdul Adhika Widyaparaga Agung B. S. Utomo Agung B. S. Utomo Agung Bambang S Utomo Agung Bambang Setio Utomo Agung Bambang Setio Utomo Amalia, Astrifidha Rahma Amrullah, Ustman Syah Anggerta, Lintang Alivia Astrifidha Rahma Amalia Astuti, Wijayanti Dwi B.S. Utomo Bayu Sujadmiko, Bayu Biwa, Tetsushi Danang D Cahyadi Davey, Orima Melati Desia Rakhma Banjarani Elvis, Elvis Eni Rustianingsih Fadloli Fadloli, Fadloli Farida Akbarina Hedwigis Harindra Heni Siswanto Hudati, Imroatul IRSYADI, FAKIH Isna Fitria Agustina Isnaini Rodiyah Iswara, Mochammad Agung Indra Khoirunisya, Siti Lailul Mursyidah M. Fakih Mahdewi, Risa Makoto Nohtomi, Makoto Mega C. Gupita Mufid Muhammad Fadly Mulaiyinatus Sifa Muslim, Shohib Natamiharja, Rudi Nurmansyah, Gunsu NURUL AZIZAH Otomo, Nobuhide Panjaitan, Oksha Dwi Anugrah Prastowo Murti Prastowo Murti, Prastowo Reliusman Dachi Rizqi Khoirunnisa Ro'isatin, Umi Anis Rosafira, Jihan Zeinyuta Sabatira, Febryani Solli Dwi Murtyas Untung Adi Santosa Wibowo, Bagas Wahyu Yoga Nur Adhitama Yuanita Fara Abdillah