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STRING (Satuan Tulisan Riset dan Inovasi Teknologi)
Published by Universitas Indraprasta PGRI
ISSN : 25279661     EISSN : 25492837     DOI : http://dx.doi.org/10.30998/string.v4i3.6197
Core Subject : Science, Education,
Computer Science & IT Mathematics
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) focuses on the publication of the results of scientific research related to the science and technology. STRING publishes scholarly articles in Science and Technology Focus and Scope Covering: 1. Computing and Informatics 2. Industrial Engineering 3. Electrical Engineering 3. Mechanical Engineering 4. Applied Mathematical 5. Physics (Classical and modern) 6. Mathematics and Science
Arjuna Subject : Ilmu Komputer (semua kategori) - Teori Komputasi dan Matematika
Articles 14 Documents
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Search results for , issue "Vol 5, No 3 (2021)" : 14 Documents clear
Aplikasi Monitoring dan Screening Covid-19 Menggunakan Metode Certainty Factor dan Forward Chaining Nur Aprilia; Fauziah Fauziah; Ratih Titi Komala Sari
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 5, No 3 (2021)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (476.798 KB) | DOI: 10.30998/string.v5i3.8107

Abstract

Coronavirus disease 2019 or COVID-19 caused by SARS CoV 2 is a tragedy in the world of global health. Even the World Health Organization (WHO) has stated that the corona virus outbreak is a Public Health Emergency of International Concern (PHEIC) or an international public health emergency. Not only has an impact on health but this virus outbreak also has a major impact in various sectors such as disruption of the country's economy, obstruction of the teaching and learning process and so on. This impact is caused by the rapid spread of the virus. Therefore, the authors designed a monitoring and screening application for COVID-19 using certainty factor and forward chaining methods which aim to make it easier for people to monitor the spread of the COVID-19 virus in real time and be able to carry out early screening for COVID-19. Both of these methods produce a system diagnosis with the same results, that is, someone is indicated as SUSPECT COVID-19.
Deteksi Kelayuan Pada Bunga Mawar dengan Metode Transformasi Ruang Warna HSI Dan HSV Dede Wandi; Fauziah Fauziah; Nur Hayati
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 5, No 3 (2021)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (848.265 KB) | DOI: 10.30998/string.v5i3.8464

Abstract

The rose is a plant from the genus Rosa which has more than 100 species with various colors. In the process of selecting roses, you will find roses that are still fresh and wilted. With that, we can detect the wilting of the rose by applying the HSI and HSV methods to image processing applications, the data collection process, namely by making data preparations on the Kaggle dataset, then classifying and training the data using the HSI and HSV methods. Based on the classification results of a total of 820 images of rose images, a total of 757 images were tested using HSI and HSV. The values obtained were Range at HSI, H = 0–0.5, S = 0–1, and I = 0.5372549–1 in the Fresh category, while the category HSI wilt, H = 0–0.5, S = 0-1, I = 0.5620915–1. The HSV range values are in the Fresh category H = 0–0.5, S = 0-1, V = 0-1, and the Wilt category H = 0-0.5, S = 0-1, V = 0-1. Furthermore, the success rate for testing roses with HSI reached 92.3% where the data read correctly 757 and read incorrectly 63 out of 820 sample data of roses, while testing on HSV the success rate reached 93.2% where the data read correctly 765 and read incorrectly 55 out of 820 rose flower sample data. Based on the above results, detection of wilting roses using the HSV color space transformation method is the best in data testing.
Analisis Seven Tools Pada Pengendalian Kualitas Proses Vulkanisir Ban 1000 Ring 20 di CV Citra Buana Mandiri Surabaya Andrianto Eko Saputra; Nina Aini Mahbubah
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 5, No 3 (2021)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (899.73 KB) | DOI: 10.30998/string.v5i3.8465

Abstract

CV. Citra Buana Mandiri is a service enterprise  which provide service such as retreading of used tires. During  retread production process, there were found defects which caused by external and internal factors so the final product  are not in accordance with the quality standards set by the firm.   The purpose of this research is to identify the causes of ring 20 tire defects, analyze whether the product defects are still within control limits and provide recommendations for improvements to improve the quality of ring 20 tires. Tseven tools was used as research approach with final result as follows: identifying factors that cause 1000 tire defects.  ring 20 is the factor of human, machine, raw material, environment and method, then we get 13 possible root causes of the problem.  The proportion of defects in the 1000 ring 20 tire product, it can be concluded that the product is still within control limits, but based on the company's standard tolerance, the percentage of defects that are still outside the predetermined standard is 1 percent and 13 improvement along production stages in order to maintaining excellent quality.
Perencanaan Jadwal Induk Produksi Komponen Band Komp Battery di PT. Mada Wikri Tunggal Aldi Raihan Rusnadi; Dene Herwanto
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 5, No 3 (2021)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (706.303 KB) | DOI: 10.30998/string.v5i3.8615

Abstract

PT. Mada Wikri Tunggal is a company engaged in the automotive industry which produces small components in motor parts. A common problem experienced by each production company is the planning for the amount of production that must be in accordance with the production capacity coupled with fluctuating demand. So that companies can make orders according to capacity and also the time required for a Master Production Schedule. The method used is the changing labor method. Because this method is very suitable for companies that experience fluctuating demand. The results obtained are that the company can meet the existing demand for the period January to December 2021 as many as 48507 units. The Regular Time fare in 12 periods / 1 year is Rp. 242,685,000. The Hiring fee in 1 year is Rp. 16,000,000. The Lay Off fee in 1 year is Rp. 20,000,000. And the cost of Under Time for 1 year is Rp. 1,750,000. So the total production cost of PT. Mada Wikri Tunggal of Rp. 280,435,000.

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