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All Journal AKSIOMA: Jurnal Program Studi Pendidikan Matematika Journal of Engineering and Technological Sciences NUMERICAL (Jurnal Matematika dan Pendidikan Matematika) Desimal: Jurnal Matematika Limits: Journal of Mathematics and Its Applications Jurnal Cendekia : Jurnal Pendidikan Matematika International Conference on Mathematics and Science Education of Universitas Pendidikan Indonesia ComTech: Computer, Mathematics and Engineering Applications Jurnal Papatung : Jurnal Ilmu Administrasi Publik, Pemerintahan dan Politik Hipotenusa: Journal of Research Mathematics Education (HJRME) Jurnal Siger Matematika Jurnal Matematika Integratif
Asmiati Asmiati
Jurusan Matematika, Fakultas MIPA, Universitas Lampung
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Immunology & microbiology Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

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Design Optimization of Propellant Grain and Nozzle Contour to Improve Performance of Solid Rocket Propulsion Muhammad Ihsan Abyan; Aang Nuryaman; Bagus Hayatul Jihad; Soleh Fajar Junjunan; Asmiati Asmiati
Journal of Engineering and Technological Sciences Vol. 54 No. 5 (2022)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2022.54.5.8

Abstract

A rocket is a spacecraft, guided missile, or flying vehicle that boosted by a chemical reaction resulting from the combustion of propellant in the rocket motor. One of the essential parameters in the development of rocket motors is design optimization to improve the propulsion performance of the rocket. Increasing the propulsion performance of the rocket will increase the flight performance of the rocket, in terms of its maximum range or the altitude of the rocket trajectory. This study examined the determination of the design parameter values of a rocket motor by looking at it as an optimization problem with constraints. The problem studied was limited to the case of the second-stage rocket motor. A genetic algorithm was used to solve the resulting optimization problem of propellant grain configuration cases and a characteristic method for designing the bell nozzle. The results obtained indicated an increase in total impulse by 10% compared to the results before optimization.
PUBLIC PRIVATE PARTNERSHIP DALAM PROGRAM PENINGKATAN KOMPETENSI TENAGA KERJA DAN PRODUKTIVITAS (PKTKP) BERBASIS PEMAGANGAN DALAM NEGERI DI PROVINSI LAMPUNG Rahayu Sulistiowati; Ita Prihantika; Asmiati
PAPATUNG: Jurnal Ilmu Administrasi Publik, Pemerintahan dan Politik Vol 5 No 2 (2022): JURNAL PAPATUNG Volume 5 Nomor 2 Tahun 2022
Publisher : GoAcademica Research dan Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54783/japp.v5i2.591

Abstract

The domestic apprenticeship program in Lampung Province still encounters problems, such as the socialization process that is carried out less than optimally so that only a few companies are interested in collaborating. As a result, the company's recruitment implementation has not been able to achieve the specified target. This study aims to evaluate the implementation of the domestic apprenticeship program and identify the factors supporting and inhibiting the implementation of the domestic apprenticeship program in Lampung Province. The study was conducted with a qualitative descriptive approach using 3 indicators of the implementation of public private partnership (Public Private Partnership) consisting of policies, resources and communication (Kurniawan, Setianto et al., 2009). The results of this study indicate that the cooperation between the government and the private sector (public private partnership) in the program to increase labor competence and productivity (PKTKP) based on domestic apprenticeship in Lampung Province is quite effective. Viewed from the policy aspect, it can be said that it is effective because the purpose of holding this program is in accordance with the objectives of the government-private partnership which is beneficial in addition to providing services to the public but also providing benefits from companies that collaborate with the Lampung Province Manpower Office. In the aspect of resources, human resources in the implementation of this domestic apprenticeship program have not been maximized in achieving the desired target/results so that the resource aspect in this focus can be said to be less effective. In the communication that took place quite well, this was seen from the lobbying process to achieve the target of absorption of participants, although communication in the socialization process for recruiting companies had not yet reached the target.
Bilangan Kromatik Lokasi n Amalgamasi Bintang yang Dihubungkan suatu Lintasan Asmiati Asmiati
Jurnal Matematika Integratif Vol 13, No 2: Oktober, 2017
Publisher : Department of Matematics, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (375.732 KB) | DOI: 10.24198/jmi.v13.n2.11891.115-121

Abstract

Pada paper ini akan didiskusikan tentang bilangan kromatik lokasi amalgamasi bintang tertentu, yang dinotasikan dengan nSk,m . Bilangan kromatik lokasi  nSk,m untuk  , ,  dan  adalah  (m+1), jika  dan (m+2), untuk .
Co-Authors Aang Nuryaman AF Rachman Agus Iriawan Ahmad Ari Aldino Ahmad Ari Aldino Akmal Junaidi Arif Munandar Atika Faradilla Ayu Devita Sari Bagus Hayatul Jihad Bernadhita Herindri S. Utami Budi Koestoro Damelyana Sagita Dewi Rakhmatia Nur Doni Sabroni H Bharata Ita Prihantika Kurnia Muludi La Zakaria Muhammad Ihsan Abyan Muslim Anshori Notiragayu Notiragayu Notiragayu Notiragayu Nurwahid Juli Andrean Rahayu Sulistiowati Saiful Rohman Siti Rahmatalia Soleh Fajar Junjunan Sri Hastuti Sri Hastuti Noer Sugeng Sutiarso Suryatul Aini Asyhara Tina Yuniarti