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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 373 Documents
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Sistem Pembelajaran Budaya Sumatera Utara Berbasis Android Development Tools Naely Farkhatin; Thomas Afrizal; Arif Ubaidillah
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 3, No 2 (2018)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (627.111 KB) | DOI: 10.30998/string.v3i2.3045

Abstract

Culture is a life aspect covering all behaviors, beliefs, ways to behave and results of human activities typical of society or certain community. The culture includes traditional house, traditional attire, traditional song and traditional ceremony. North Sumatra is a province that has varied culture in many fields. Therefore, the researcher interviews many informants, especially historians or traditional figures in North Sumatra to study its culture. With the increasingly rapid development of technology, the researcher initiates the creation of an application to introduce the culture of North Sumatra using android Development Tools. It is expected that this application can be an interactive and interesting learning medium for society and tourists who want to learn the culture of North Sumatra.
Sistem Pakar Untuk Mendiagnosa Penyakit Kucing Menggunakan Metode Dempster Shafer Berbasis Web Novi Amalia; Fauziah Fauziah; Deny Hidayatullah
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 4, No 2 (2019)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1132.889 KB) | DOI: 10.30998/string.v4i2.3790

Abstract

Kucing adalah hewan peliharaan yang banyak dimiliki oleh manusia, penyakit kucing yang sering kali terjadi disebabkan oleh virus, parasit dan bakteri yang berkembang dalam tubuh kucing tanpa diketahui oleh pemilik kucing. Butuh perawatan lebih untuk menjaga kesehatan kucing dan perlunya pemahaman bagi pemilik kucing untuk mengetahui cara menangani apabila kucing terserang penyakit. Maka dari itu dengan adanya sistem pakar dapat diketahui penyakit apa yang sedang dialami oleh kucing tersebut dan dapat memberikan solusi. Metode dempster shafer memiliki kemampuan dalam memberikan tingkat keakuratan atau kepastian yang tinggi, dimana metode ini memiliki karakteristik yang sesuai dengan cara metode berpikir seorang pakar, namun dengan menggunakan perhitungan melalui gejala yang dipilih oleh pengguna dari tiap-tiap gejala memiliki nilai densitas, nilai densitas tersebut didapat dari hasil wawancara dengan dokter hewan. Sistem pakar untuk mendiagnosa penyakit kucing dengan menggunakan metode dempster shafer berbasis web dapat mempermudah bagi pemilik kucing dalam mencari informasi jenis penyakit pada kucing, juga dapat mendiagnosa penyakit dan memberikan solusi dari penyakit tersebut. Hasil akurasi yang diperoleh dari perhitungan sebesar 88,88% yang menunjukan bahwa aplikasi beropersi dengan baik sesuai dengan metode dempster shafer. 
Aplikasi Sistem Pakar untuk Mendiagnosa Penyakit ISPA menggunakan Metode Naive Bayes Berbasis Website Fikry Ramadhana; Fauziah Fauziah; Winarsih Winarsih
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 4, No 3 (2020)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (587.306 KB) | DOI: 10.30998/string.v4i3.5441

Abstract

ISPA (Acute Respiratory Infection) is a disease that occurs due to respiratory tract disorders that can cause a variety of diseases ranging from asymptomatic illnesses, mild to severe infections due to environmental factors. The lack of public knowledge about the symptoms, how to treat it and how to overcome it result in a fairly high mortality rate due to ISPA. The expert system to be created is intended to make it easier a person to diagnose ISPA by adopting human knowledge into a computer system so the expert system is able to solve problems like an expert does. Expert system application  is made using the Naive Bayesmethod because the Naive Bayesmethod is the best classification method with high probability when used in its system calculation. With this application, people will feel like they are consulting with a doctor or an expert who handles ISPA. This application is built based on websites that use the PHP programming language, Codeigniter framework and MySQL database. There are 104 training data and 39 testing data that have been tested. From 39 tests, there are 36 test data that are suitable and there are 3 test data that are not suitable. Accuracy obtained from the test is of 92.3%.
Pengaruh Ergonomi dan Antropometri bagi User Gudang Bahan PT. MI guna Meningkatkan Produktivitas Serta Kualitas Kerja Heri Satria Setiawan
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 2, No 2 (2017)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (308.034 KB) | DOI: 10.30998/string.v2i2.2102

Abstract

The Job comfort in a work is a factor having a decisive influence onthe increase of efficiency and effectiveness of work in which the equipment and technology aresome of supporting facilities in improving the productivity of work in a company. Besides inputting data into computers, user operators in PT.MI seat material division also make RF (Receiving Form), receive goods, put goods and make the settings in the material warehouse, bringing about negative effects such as work accidents and occupational diseases. Based on observations and questionnaires distributed to computer warehouse operators, there are some problems creatinguncomfortable and unnatural working condition that lead to less optimal work productivity. Therefore, it is necessary to improve the work station design by considering human and machine factors. It is then anticipated by making an adjustment between worker, work process and work environment. It is an approach known as ergonomics. Despite its importance to the workers, the company often puts aside the ergonomics aspects for its workers. Working condition not paying attention to the job comfort, satisfaction, safety and health will certainly affect the work productivity. The new design is made by changing the condition of the workplace. The analysis results show the new working condition is better than that of before the redesigning, as seenin the size of work facilities adapted to anthropometry, the procurement of work chairs, desks and ergonomic computers, the decrease of the level of pain complaints at work, the average energy consumptionthat has been smaller after the redesigning. It is expected that workers can feel safe and comfortable and improve their productivity efficiently and effectively.
Analisis Postur Kerja pada Pembuatan Rumah Boneka dengan Metode Rapid Entire Body Assessment Tiara Mardi; Surya Perdana
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 3, No 2 (2018)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (671.166 KB) | DOI: 10.30998/string.v3i2.2761

Abstract

PT. X is a company engaged in the manufacture of the doll house. Its various daily production processes in each work station are performed on the floor by squatting for long hours. There are seven work stations, namely pattern making, pattern cutting, pattern assembly, caulking, sanding, painting and accessory installation. The study aims to know the risk level of working posture of operators and to suggest improvements to very risky work stations. The method used in this research is Rapid Entire Body Assessment (REBA) based on nordic questionaire on pains suffered in the back, waist, hip, right hand and foot. From the results of the collection and processing of the data, the risk of injury in an actual working system based on REBA score shows a high risk level, with the highest risk level is in caulking working station of 9 for the left side and 8 for the right side. Further, the suggested working system improvement using a chair and table results in a decrease in the risk of injury with low REBA score, the average of which is 5 for all improved work stations. It shows that the suggested working system improvement is really necessary to reduce the work risks during the doll house production.
Total Productive Maintenance pada Mesin Cetak Offset Printing SM 102 ZP (Study Kasus di PT. XYZ) Arif Rahman
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 4, No 1 (2019)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (833.116 KB) | DOI: 10.30998/string.v4i1.3614

Abstract

Abstrak Mesin merupakan komponen utama dalam proses produksi, apabila salah satu mesin mengalami kerusakan maka proses produksi akan berpengaruh, target produksi berkurang, dana untuk perbaikan kerusakan tinggi dan pada akhirnya perusahaan mengalami kerugian. Oleh karena itu perlu dilakukan perawatan mesin secara berkelanjutan agar kerusakan mesin dapat diminimalkan dan fasilitas produksi dapat bekerja sebagaimana yang diharapkan. Penelitian ini bertujuan dapat mengetahui performance maintenance yang diterapkan di PT. XYZ. Penelitian ini menggunakan konsep Total Productive Maintenance dalam menganalisa terjadinya break down mesin cetak offset printing SM 102 ZP. Nilai Mean Time Between Failure (MTBF) semakin meningkat sejumlah 35,08 jam sehingga peningkatan keandalannya dikatakan baik sedangkan nilai Mean Time To Repair (MTTR) sebesar 2,56 jam hal ini menunjukkan bahwa kemampuan operator maintenance kurang baik. Nilai Availability mesin mengalami peningkatan sebesar 93,2%. Dengan demikian perlu dilakukan training skill kepada operator maintenance, dikarenakan hasil MTTR yang didapatkan masih tidak stabil, selain itu perlu menerapkan perawatan mandiri pada setiap mesin yang di operasikan, Availability mesin perlu ditingkatkan lagi, dengan nilai availability mesin yang lebih tinggi sehingga meningkatkan produktivitas. Kata Kunci: Performance Maintenance, Mesin Offset Printing, Produktivitas. Abstract The machine is the main component in the production process, if one of the machines is damaged the production process will take effect, the production target is reduced, the funds for repairs to damage are high and in the end the company suffers a loss. Therefore it is necessary to carry out engine maintenance continuously so that engine damage can be minimized and production facilities can work as expected. This study aims to determine the performance maintenance applied at PT. XYZ. This study uses the concept of Total Productive Maintenance in analyzing the breakdown of SM 102 ZP printing offset printing machines. The value of Mean Time Between Failure (MTBF) increased by 35.08 hours so that the increase in reliability was said to be good while the value of Mean Time To Repair (MTTR) was 2.56 hours, indicating that the maintenance operator's capability was not good. The Availability Value of the machine has increased by 93.2%. Thus it is necessary to do training skills for maintenance operators, because the results of the MTTR obtained are still unstable, besides that it needs to implement self-maintenance on each machine that is operated, the availability of machines needs to be increased again, with higher machine availability values thereby increasing productivity. Keywords: Performance Maintenance, Offset Printing Machine, Productivity.
Analisis dan Perancangan Sistem Informasi Undang-undang Wakaf dalam Tata Kelola Lembaga Pendidikan Islam dan Hasil Belajar Eddy Saputra; Rayung Wulan
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 1, No 2 (2016)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (330.964 KB) | DOI: 10.30998/string.v1i2.1044

Abstract

Kajian tentang sistem informasi undang undang wakaf bertujuan membangkitkan gairah umat dalam menciptakan sebuah lembaga pendidikan yang berkualitas serta mampu berjalan tanpa memiliki ketergantungan kepada negara ataupun lembaga yang lainya. Sistem informasi undang undang wakaf merupakan sebuah gerakan yang di landasi oleh kesadaran serta ke ikhlasan dari masing-masing orang yang mau menafkahkan sebagian hartanya. Semangat mendonasikan dana dalam bentuk wakaf tidak hanya sekedar untuk menciptakan lembaga pendidikan semata, tetapi sebagai salah satu sarana untuk mendekatkan diri pada Tuhan. Berbeda dengan lembaga pendidikan swasta dimana keuangan sekolah dihasilkan melalui sebuah kewajiban yang harus dibayarkan siswa. Banyak dana yang didapat dari informasi wakaf yang di kelola secara pofesional dan amanah sehingga berpotensi dalam menghasilkanlembaga pendidikan yang berkulitas. Sistem Informasi Lembaga pendidikan yang di kelola melalui dana wakaf memiliki spirit lebih dalam menghasil sumber daya manusia sebagai out put belajar. Kesadaran akan nilai-nilai ketuhanan yang menjadi landasan wakaf membuat pengelolah secara sunguh-sunguh dalam penggunaan keuangan. Berbeda dengan informasi lembaga swasta pada umumnya, dimana tidak sedikit pendidikan masih di jadikan komoditi bisnis, sehingga tidak jarang sebuah lembaga pendidikan hanya mengedepankan gengsi dibandingkan hasil proses pembelajaran dari pendidikan tersebut. Manusia yang cerdas dapat dibangun melalui sebuah proses pembelajan yang serius, tata kelola sebuah lembaga pendidikan harus mengacu pada nilai moral yang diajarkan oleh agama sehingga dapat menghasil sumber daya manusia yang beriman dan bertaqwa.Kata kunci: Perancangan Sistem Informasi, Tata kelola undang undang wakaf, Hasil belajar
Implementasi Fuzzy Simple Additive Weighting (SAW) sebagai Pendukung Keputusan pada Beasiswa Penelitian Rahman Abdillah
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 2, No 1 (2017)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (180.603 KB) | DOI: 10.30998/string.v2i1.1733

Abstract

The aim of this research is designing decision support systems (DSS) which helps the decision maker to acquire the decision applied to the candidates which register to the research scholarship program (Riset Inovatif Produktif/RISPRO) from Lembaga Pengelola Dana Pendidikan (LPDP), held by the Ministry of Finance RI. This research use Fuzzy Simple Additive Weighted (FSAW) as a methodology by classified attributes from each criteria rate, then calculate weights of each criteria and rank them as a final result. Decision maker will get recommendation of potential awardees base on rank and score from each candidates. The presented of decision support systems that has been designed hope can help the decision maker to do the process of determining scholarships recipient faster and accurately.
Smart Kulkas dengan Fitur SMS untuk Melaporkan Ketersediaan Bahan Makanan I Wayan Degeng; Michael Santoso
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 3, No 1 (2018)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (654.669 KB) | DOI: 10.30998/string.v3i1.2724

Abstract

Refrigerator is one of household appliances used daily to keep foodstuffs fresh. To find out whether the contents of the refrigerator are running low or run out, a user must check it directly by opening the door and viewing the contents. It will be troublesome to know the contents of the refrigerator when the user is outdoors because he or she must first call someone at home. One of solutions offered is by modifying the refrigerator so that the user can check the contents of the refrigerator by sending a short message (SMS) via mobile phone and the refrigerator can also send notification via SMS to the user if the contents of the refrigerator are running out. Equipment added to the refrigerator is a microcontroller in Arduino Uno R3 equipped with load sensors, and infrared sensors as food detectors and with GSM module for sending and receiving short messages. The study is conducted to design a modified refrigerator and to test the modification result. The result is a smart refrigerator system that can send SMS if the food supply in the refrigerator is running out.
Etnomatematika pada Transaksi Jual Beli Pasar Tradisional di Solo Mei Lestari
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 3, No 3 (2019)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (450.719 KB) | DOI: 10.30998/string.v3i3.3590

Abstract

This study aims to describe the ethnomstics results of buying snd selling in Javanese society, especially solo cities. This research is an exploratory study using ethnographic traditions. Solo is a city that is densely populated and thick with culture. Solo has one kingdom known as the Surakarta Hadiningrat Sunan Palace with the raja title Raja Pakubuwana. Klewer market is located next to the kasunanan palace. The data in this study were obtained from the results of interviews and ethnographic records made during the study. Data analysis was performed using the Miles & Huberman model. The result of the study obtained several mathematical concepts used by solo society, namely activity of counting and counting. Counting activity arose during the mention of buying and selling. In calculating altitude, there are several mathematical concepts, including counting algorithms. The results of this study are expected to provide inspiration and reference material for contextual mathematics learning.

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