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All Journal Jurnal Matematika & Sains Fair Value: Jurnal Ilmiah Akuntansi dan Keuangan Jurnal Teknik
IWAN SETIAWAN
Kelompok Riset Kosmologi, Astrofisika, dan Fisika Matematika Jurusan Fisika Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Gadjah Mada
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering

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Geometri Bintang Berotasi Pada Keadaan Ambang Iwan Setiawan; Muhammad Farchani Rosyid
Jurnal Matematika & Sains Vol 15, No 3 (2010)
Publisher : Institut Teknologi Bandung

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Abstract

The mechanical equilibrium configuration of rotating stars is discussed through Roche model. In our study, the stars are assumed to rotate rigidly, while their geometry are determined by the use of their equipotential surfaces. The critical state is achieved by a rotating star, when its total gravitational force vanishes. There are two posibilities for a star to be in its critical state: either its effective gravitational force vanishes or it exceeds the Eddington limit. The meridional section of rotating stars of various masses and angular velocity are determined.
Rancang Bangun Simulator Sinkronisasi Generator Sinkron 3 Fasa Semiotomatis Berbasis Mikrokontroler Arduino Suharno, Dedi Nono; Iwan Setiawan
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 19 No 2 (2020): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jt.vol19no02.163

Abstract

A large supply of electrical power at industry is obtained from generators and PLN which can be operated alternately or together in parallel to supply power to loads either manually or automatically. This condition is for economic reasons and maintenance purposes. In parallel process of a generator, requirements are needed, the frequency, voltage and phase sequence must be the same. For parallel processing, a device called a synchronoscope is needed. In this research, a three-phase synchronous generator synchronoscope simulator that works in parallel with the PLN source semi-automatic using an Arduino microcontroller is made. The synchronoscope simulator works semi-automatically because the voltage and frequency settings of the synchronous generator are not manual. To detect the synchronization parameters of a three-phase synchronous generator, sensors and controllers are made. The components are ZMPT101B voltage sensor, PC817 optocoupler frequency sensor, phase sequence sensor and Arduino Mega 2560. The purpose of this research is to design and create a three-phase generator synchronization simulator based on the Arduino microcontroller which can be synchronized with a maximum of 15 seconds with a measurement error below 5%. The result is that the maximum synchronization process time is 11 seconds and the measurement error is 4.5%.
PENGARUH EDUKASI, SOSIALISASI DAN PEMAHAMAN PERATURAN PEMERINTAH NO 46 TAHUN 2013 DAN NO 23 TAHUN 2018 TERHADAP KEPATUHAN WAJIB PAJAK : Studi Empiris Pada UMKM Di Sentra Industri Tenun Kecamatan Ibun Kabupaten Bandung Dudi Sudirman; Edih A. Hamid; Achmad Subagdja; Iwan Setiawan
Fair Value: Jurnal Ilmiah Akuntansi dan Keuangan Vol. 4 No. 4 (2021): FairValue : 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 (236.964 KB) | DOI: 10.32670/fairvalue.v4i4.811

Abstract

The purpose of this study was to determine the effect of education, socializationand understanding of Government Regulation no. 46 of 2013 and No. 23 of2018 Against Taxpayer Compliance. The research method used in this researchis descriptive and verification method using a quantitative approach, where thedata obtained from the research sample is analyzed according to the statisticalmethod used and then interpreted rationally and accurately. Furthermore, it isanalyzed using correlation coefficient analysis, coefficient of determination,multiple regression and hypothesis analysis with t test and F test. The resultsobtained by the value of the coefficient of determination (R2) of 0.806 meansthat 80.6% of the taxpayer compliance variable can be explained by education,socialization and understanding of government regulation no. 46 of 2013 andNo. 23 of 2018, which can also mean that taxpayer compliance can beexplained by education, socialization and understanding of governmentregulation no. 46 of 2013 and No. 23 of 2018 has a strong effect on taxpayercompliance, it can also be interpreted that the influence of variables outside themodel or other factors is 19.4%. Based on the results of the hypothesis test, asignificance level of 0.000 was obtained when compared to an alpha of 0.05,the significance level is smaller than alpha, so the hypothesis can be accepted,meaning that there is an influence of education, socialization of tax regulationsand understanding of government regulations no. 46 of 2013 and No. 23 of2018 on taxpayer compliance in the SMEs of the Weaving Industry Center,Ibun District, Bandung Regency
Co-Authors Achmad Subagdja Dedi Nono Suharno, Dedi Nono Dudi Sudirman Edih A. Hamid Muhammad Farchani Rosyid