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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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Perbandingan Algoritma Sorting dengan Menggunakan Bahasa Pemograman Javascript dalam Penggunaan Waktu Komputasi dan Penggunaan Memori Wijaya, Surya; Fauziah, Fauziah; Harjanti, Trinugi Wira
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 3 (2024)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i3.17972

Abstract

Data that is sequential or neatly arranged data is highly necessary because sorted data makes it easier to read, inspect, and correct any erroneous data. In information technology, there are many algorithms for data sorting, including merge sort, insertion sort, heap sort, quick sort, selection sort, shell sort, and so on. In this test, seven sorting algorithms (Merge Sort, Insertion Sort, Bubble Sort, Heap Sort, Quick Sort, Selection Sort, and Shell Sort) were used with random data testing scenarios of 100, 150, and 200 data points, using the JavaScript programming language. The research findings indicate that insertion sort is the most efficient algorithm in terms of time, with an average time of 0.613 seconds. Quick sort is the most efficient algorithm in terms of memory, with an average memory usage of 31072 Kb.
Pemanfaatan Teknologi Virtual Reality sebagai Media Pengenalan UMKM Jawa Barat Berbasis Aplikasi Artsteps Putri, Shindi Audina; Voutama, Apriade; Heryana, Nono
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 2 (2023)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i2.17553

Abstract

One option for introducing micro, small, and medium enterprises (UMKM) in West Java is through the use of virtual technology, which can potentially visualize different UMKM products interactively. Previously, the introduction of UMKM products relied solely on print media or social media for advertising. Therefore, Virtual Reality technology can be a solution to integrate information about UMKM in West Java. This research utilizes the MDLC (Multimedia Development Life Cycle) method to optimize the design and implementation process of Virtual Reality technology as an integrated information tool with 3D and other media. The end result of this virtual reality utilization research is a virtual tour simulation on "Introduction to West Java's UMKM," which allows users to interactively view the products that can be produced through the Artsteps application that has been integrated with the development of Virtual Reality technology.
Perancangan Sistem Informasi Posyandu Aster XI Desa Saga Berbasis Java Yonofa Putra, Fitrada; Sandy, Agung Ferdinan; Primawati, Alusyanti
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 2 (2023)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i2.15170

Abstract

Health is a need that must be met for all Indonesian people. A healthy body and mind are needed to support all activities. The Health service activities at Posyandu (Integrated health services post) Aster XI are still conducted manually or written by hand, from the collection to process of the data. This can hinder and cause many problems in the processing, searching and producing reports on Posyandu Aster XI activities. Thus, it is necessary to develop the conventional systems to become computerized. The research method used is Grounded Research, while the system development method used is waterfall. The aim of this research is to design and implement a Java-based information system at Posyandu so that it can help and speed up work in terms of processing data such as storing, changing and searching data to making reports at Posyandu Aster XI. The result of this research is the use of a computerized system, created with the Java programming language and MySQL database, that can help and make cadres process the data at the Posyandu more quickly, precisely and efficiently.
Usulan Perbaikan Proses Bisnis pada Pemesanan Mesin Roll Forming Bazy, Ahmad; Yuliawati, Evi
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 9, No 1 (2024)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v9i1.22180

Abstract

In the manufacturing industry, the business process of selling roll forming machines plays an important role in producing products with high quality and high efficiency. Therefore, this research was conducted to improve the effectiveness of business processes on Vietsteel Brand Roll Forming Machine customer orders at PT Vinatech using the Business Process Improvement (BPI) method and streamlining techniques. The potential problems identified lie in making approval profile designs that are still done manually, which results in errors in machine design and delays in shipping goods. After improvements were made to business processes through upgrading efforts in the streamlining category, there was a significant decrease in resource usage and accelerated the customer order business process at PT Vinatech. Thus, the results of this research can support the improvement of quality and efficiency of business processes in customer orders of Vietsteel Brand Roll Forming Machine at PT Vinatech which has a positive impact on customer satisfaction and company profitability.
Tinjauan Kinerja Supply Chain Management (SCM) pada PT. BJ Aridho, Mohamad; Sutrisno, Sutrisno
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 3 (2024)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i3.22728

Abstract

Analisis Pengendalian Kualitas Produk Cacat Part X Menggunakan Lean Six Sigma di PT XYZ Rahmadhani, Novia; Fitriani, Risma
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 3 (2024)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i3.19320

Abstract

In the manufacturing industry, industrial competition is increasingly competitive, to produce a product that has high quality to be an added value in XYZ company's competitive advantage, so that companies produce good quality products by meeting consumer standards and tastes for the products they produce and reduce the level of product defects by the company. This study aims to analyze defective products on Part lockwasher at PT XYZ. The research used the Six Sigma method to control product quality through 5 stages, namely define, measure, analyze, improve and control. From the results of this analysis, it was found that there were 3 types of product defects that caused the resulting defects, namely high torque values, rotating bolts, and easily detached stoppers caused by machine, human, and method factors. the results of the six sigma calculation of defective products Part lockwasher during April-December there is a six sigma level of 3.463 with an average DPMO of 24803.43, and knowing the highest level of defects is caused by high torque values. These results indicate that product defects in Part lockwasher are on average for the Indonesian industry. The proposal given in this study uses 5W + 1H as an improvement to improve product quality.
Strategi Peningkatan Kinerja Karyawan PT. Ciptaunggul Karya Abadi dengan Metode Analytical Hierarchy Process Waliyyu, Rafi Umar; Fitriani, Risma
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 2 (2023)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i2.17135

Abstract

In determining alternative decisions for improving its employee performance, PT. Cipta Karya Abadi appraises its employee performance with the help of predetermined criteria limits. To find out the level of quality of employees, work facilities, employee welfare which is a priority in performance improvement strategies so that employees get comfortable and motivated and can reduce feelings of boredom when carrying out work, can be conducted by looking at some of the problems that occur in the company. This research was conducted to find out strategies that can be used to increase employee performance in making a company organization more efficient. Based on the results described in the results and discussion, it can be concluded that the criteria used as a reference in employee performance improvement strategies are additional tasks, management skills, work skills, and communication skills. From the above criteria, several alternatives proposed by the company to improve employee performance. They are HR Quality Improvement, Work Facilities Improvement and Welfare Improvement. The three calculations that have been carried out using the Analytical Hierarchy Process (AHP) method to determine employee performance improvement strategies show that the first alternative priority is to increase work facilities with a priority value of 0.3448, then the second and third alternatives are to improve the quality of human resources and increase welfare by the same priority value of 0.3276.
Analisis Manajemen Persediaan Menggunakan Metode ABC Analysis pada PT. BMJK Yuliandi, Fidy Febryan Muthfy; Sari, Rianita Puspa; Fatwa, Muhammad Adi
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 9, No 1 (2024)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v9i1.23348

Abstract

Penerapan Analisis Berbasis Fraktal dalam Klasifikasi Citra Retakan pada Permukaan Jembatan Beton Muchtar, Mutmainnah; Sutoyo, Muhammad Nurtanzis; Paliling, Alders; Sunyanti, Sunyanti; Iin, Johar Nur
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 9, No 1 (2024)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v9i1.20596

Abstract

Bridge cracks are gaps that form on the concrete surface of the bridge due to the aging process or the load exceeding its capacity. Knowing the cracks in the bridge is very important because undetected cracks can cause serious damage to the bridge structure, threaten the safety of road users, and increase the cost of maintaining and repairing infrastructure. Fractal analysis is a mathematical approach that studies structures and patterns in complex and irregularly shaped objects. This study aims to apply fractal-based analysis using fractal dimension and lacunarity features in classifying image cracks on the surface of concrete bridges. By using fractal analysis and the K-Nearest Neighbor classifier, this study succeeded in achieving an accuracy of crack image classification on concrete bridges of 97.6%, followed by precision and recall values of 97.659% and 97.6%. These results prove the potential of fractal analysis as an effective method for detecting cracks in concrete bridges and can make an important contribution to the maintenance and safety of bridge infrastructure in the future.
Pengembangan Aplikasi Penjualan dengan Metode Extreme Programming dan Penerapan Model Multi-Tenancy Ahmadi, Ahmadi; Surachman, Arie
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 3 (2024)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i3.20276

Abstract

This research discusses the development of sales applications using extreme programming methods and implementing a multi-tenancy model to support software as a service (SaaS) businesses in small-scale software companies. Observation results reveal that the web-based application uses the PHP programming language with the Laravel framework and MariaDB database. The application has facilities for managing sales, cooperation contracts, and other features in serviced offices, virtual offices, and MICE businesses. Software development using only two developers in two focused and limited iterations. The development results include key features such as user authentication, access rights management, sales data management, customer management, sales transactions, and dashboards. The resulting application implements a multi-tenancy model essential in supporting SaaS businesses. This research concludes that the multi-tenancy model and extreme programming methods suit SaaS application development, even with small development teams. Technical excellence in writing software code is the primary key to this method.

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