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All Journal Ganaya: Jurnal Ilmu Sosial dan Humaniora Dinamis International Journal of Scientific Multidisciplinary Research (IJSMR)
Sukardi
Universitas Sumatera Utara
Religion Arts Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences Transportation Other

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STUDI EKSPERIMENTAL DAN ANALISA RESPON MEKANIK HELMET SEPEDA DARI BAHAN KOMPOSIT BUSA POLIMER DIPERKUAT SERAT TKKS AKIBAT BEBAN IMPAK JATUH BEBAS Sukardi; Bustami Syam; M. Sabri; Tugiman; Syahrul Abda; Farida Ariani; Alfian Hamsi
DINAMIS Vol. 4 No. 3 (2016): Dinamis
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (990.734 KB) | DOI: 10.32734/dinamis.v4i3.7101

Abstract

Tujuan penelitian ini adalah untuk mendapatkan tegangan, regangan danenergi impak yang mampu diserap oleh helmet sepeda dari bahan polimerik foam busa komposit. Pengujian impak jatuh bebas dilakukan dengan menggunakan alat uji jatuh bebas multiguna. Helmet yang diuji diletakkan pada tes rig yang dapat diatur ketinggian jatuhnya. Perhitungan waktu impak, maka pada alat uji dilengkapi dengan 8 buah sensor proximity jenis induktif. Helmet akan jatuh dan menabrak dudukan alas uji yang disebut dengan anvil. Gaya yang dihasilkan akan diukur dengan menggunakan alat sensor pengukuran beban yang disebut dengan load cell yang diletakkan di bawah anvil. Data akan dipindahkan dari load cell ke suatu sistem data akusisi yang berfungsi untuk merubah sinyal analog ke bentuk sinyal digital.Data akan disimpan pada PC sebagai gaya (N) dan waktu (t).Hasil uji impak dengan cara eksperimental untuk helmet bahan polimerik foam busa komposit diperkuat serat TKKS, uji impak pada sisi samping dengan ketinggian impaktor 1 m diperoleh besar gaya rata-rata 275,33 N. Dan Sisi belakang 239,33 N. dan besar tegangan rata-rata yang terjadi pada sisi samping adalah 1,029Mpa. Pada sisi belakang adalah 0,684 Mpa. Tegangan yang terjadi ini menyebabkan helmet sepeda pecah yang berarti telah mencapai dan melewati titik break point.
Analisis Pengaruh Ekspor dan Impor Terhadap Pertumbuhan Ekonomi di Indonesia Tahun 2018 – 2022 Natasya Kinski; Ahmad Albar Tanjung; Sukardi
Ganaya : Jurnal Ilmu Sosial dan Humaniora Vol 6 No 3 (2023)
Publisher : Jayapangus Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37329/ganaya.v6i3.2498

Abstract

This study aims to analyze the effect of exports and imports before and after the COVID-19 Pandemic. The decline in export-import activities due to the COVID-19 pandemic has hurt Indonesia, where exports in 2020 compared to 2019 have decreased by 2.68 percent. In addition there are war between Rusia and Ukraine which gives effect to our Intrenational trade. This research was conducted using a quantitative method with export, import and economic growth variables in Indonesia from 2018 to 2020 by using data panel regression methods. Data was obtained from various sources in the form of journals and books along with publication data from the Indonesian Central Bureau of Statistics.  The results of the study show economic growth affected by exports and import by 76.25%. Exports have a negative and significant effect on economic growth.  Meanwhile, imports have a positive and significant effect on economic growth. Exports and imports of goods and services during the pandemic era had a major impact on the Indonesia economy, proven by the 2.07% decline in gross domestic product in 2020. War Russia and Ukraine did not have a big impact because it benefited Indonesia in terms of oil exports to international markets, but the quality of goods and services needed to be improved in order to compete in international markets. And imports need to be controlled so that the balance of trade is not disrupted and the production of goods and services in Indonesia is still fulfilled.
Analysis of Factors Influencing Indonesian Coffee Export Volume Abroad Mutiara Sari Lubis; M. Syafii; Sukardi
International Journal of Scientific Multidisciplinary Research Vol. 1 No. 9 (2023): October 2023
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijsmr.v1i9.6557

Abstract

The aim of this research is to analyze factors influencing Indonesian coffee export volume abroad. The type of data used in this research is quantitative secondary data. Data taken from the Indonesian Central Statistics Agency, World Bank, United Nations International Trade Statistics Database, Indonesian Shoe Association, and United Nations Conference on Trade and Development. This research uses the literature study method, by analyzing secondary data obtained from official publications related to this research. The data analysis method in this research uses panel data regression. The research results show that real gross domestic product has a positive and significant effect on Indonesian coffee export volume abroad. Exchange rate has a positive and significant effect on Indonesian coffee export volume abroad. Price has a negative and significant effect on Indonesian coffee export volume abroad. Population has a positive and significant effect on Indonesian coffee export volume abroad
Co-Authors Ahmad Albar Tanjung Alfian Hamsi Bustami Syam Farida Ariani M. Sabri M. Syafii Mutiara Sari Lubis Natasya Kinski Syahrul Abda Tugiman