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All Journal JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Indonesian Journal of Science and Technology Journal of Science and Applicative Technology ASEAN Journal of Science and Engineering Education (AJSEE) Indonesian Journal of Community and Special Needs Education (IJCSNE)

Ali Rahmat

Gifu University

Author-ID : 2879013

Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

Published : 6 Documents Claim Missing Document

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Articles

Ufer grounding system to minimize risk of lightning strike using concrete mixed with bentonite and coconut fiber Yul Martin; Diah Permata; Annisa Ulya; Dikpride Despa; Marwansyah Marwansyah; Ali Rahmat
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 9, No 1 (2020): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

The increasing frequency of lightning strikes endangers human safety and life. The grounding system was introduced to face the lightning strikes. This research aimed to understand the changes of grounding resistance value using concrete mixed with bentonite and coconut fiber. The research was conducted in the Laboratory of Electrical Engineering, University of Lampung. The research was started from October 2017 to April 2018. This research used the Ufer grounding system. Concretes with (25 x 25 x 30) cm3 in volume were planted at a depth of 50 cm with copper-coated electrodes that were 16 mm in diameter. 4 concrete was produce with different component T1= concrete, 30% bentonite, T2= concrete, 30% bentonite, 1.5% coconut fiber, T3= concrete, 30% bentonite, 0.75% coconut fiber, T4= concrete + 1.5% coconut fiber. The results show that the lowest grounding resistance values were 45.896 Ω on the concrete with bentonite: cement: sand: gravel = 0.3: 0.7: 2: 4. By adding 1.5% coconut fiber, the grounding resistance value is 3.5 times smaller than the grounding resistance values of the soil (161.2 Ω). Adding bentonite and coconut fiber can decrease the grounding resistance values

Simple Experiments for Introducing Science to Elementary School Students Ali Rahmat
ASEAN Journal of Science and Engineering Education Vol 1, No 1 (2021): AJSEE: March 2021
Publisher : Universitas Pendidikan Indonesia (UPI)

The purpose of this paper is to introduce some simple experiments that can be used to explain science to elementary school students. This study explained about seven experiments that can be done easily and used simple materials (found in daily life). This paper also explains the scientific reasons for the phenomena happening during the teaching and learning process.

Standards for Dimensions of Space and Environment in Buildings for People with Special Needs (i.e. Wheelchairs, Crutches, Canes for The Visually Impaired) Ali Rahmat
Indonesian Journal of Community and Special Needs Education Vol 1, No 1 (2021): IJCSNE: March 2021
Publisher : Universitas Pendidikan Indonesia (UPI)

The purpose of this study is to describe the concept of basic dimensions of space and environment for persons with disabilities. This research was made by conducting a literature review. The results of the study were taken by taking data from the literature. The data is then processed to be presented in the form of an explanation that can be easily understood. Therefore, it is hoped that the research results can be used as a reference for the construction of buildings and the environment, especially for buildings in hospitals, schools, and public facilities for people with special needs (i.e. wheelchairs, crutches, and canes for the blind).

Creating Good Environment and Building for People with Special Needs: From Definition to Application of Guiding and Warning Blocks Ali Rahmat
Indonesian Journal of Community and Special Needs Education Vol 2, No 1 (2022): IJCSNE: March 2022
Publisher : Universitas Pendidikan Indonesia (UPI)

The purpose of writing this paper is to discuss the definition and application of guiding blocks. We analyzed and searched the literature to discuss the definition and application of guiding blocks. This paper can be used as a reference for practitioners in the application of tactile guiding blocks.

SIMPLE ESTIMATION AIR TEMPERATURE FROM MODIS LST IN GIFU CITY, JAPAN Ali Rahmat
Journal of Science and Applicative Technology Vol 1 No 1 (2017): Journal of Science and Applicative Technology August Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

In the developing country or poor country difficult to access meteorological data such as air temperature, it's caused by the limitation of equipment or funding. Air temperature is one of the meteorological data commonly used to predict evaporation or to understanding climatic condition in a specific location. Nowadays from satellite data can estimate some meteorological data. But the detail of explanations about how to get and how to use satellite data is limited and difficult to adopt for beginners. This paper explains how to get MODIS LST data to estimate air temperature data study case in Gifu City, Japan. The results show data from MODIS LST is higher than data from the local meteorological station for day time and lower for night time, but still can use because the pattern is similar. Mean of maximum air temperature and minimum air temperature can be used as daily average air temperature. MOD11A2 product data was better than MYD11A2 data to predict air temperature. MODIS LST data can be used for untouched areas like desert or forest.

Forest Cover Change and Legal Pluralism in Forest Management: A Review and Evidence from West Sumatra, Indonesia R. Rudy; Y. Yonariza; Helvi Yanfika; Ali Rahmat; Winih Sekaringtyas Ramadhani; Abdul Mutolib
Indonesian Journal of Science and Technology Vol 6, No 2 (2021): IJOST: VOLUME 6, ISSUE 2, September 2021
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v6i2.34190

This study analyzed the functions of shifting (phenomenon of legal pluralism) and identified forest conversion at Production Forest Management Unit of Dharmasraya (PFMU Dharmasraya), West Sumatra, Indonesia from March 2018 to December 2019 using a qualitative research design with a case study approach. The identification of changes in forest cover analyzed by satellite images using the NDVI method to obtain the distribution of forest cover. Discussion on legal pluralism were examined using a non-ethnographic qualitative research approach through interviews with local communities, companies/permit holders, and related institutions (government). From 2000 to 2019, the PFMU Dharmasraya forest area reduced from 86 to 12%, and plantations increased from 10 to 81% of the total area of 33,539 ha. The legal pluralism of forest ownership occurs because local communities use traditional law, claiming the PFMU Dharmasraya area as Ulayat land. In contrast, the government claims the forest belongs to the state. The motives for the conversion of forest functions are the expansion of oil palm and rubber plantations, forest clearing to mark forest ownership rights, and illegal logging.

Co-Authors Abdul Mutolib Annisa Ulya Diah Permata Dikpride Despa Helvi Yanfika Marwansyah Marwansyah R. Rudy Ramadhani, Winih Sekaringtyas Yonariza Yonariza Yul Martin

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