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All Journal Infokes : Jurnal Ilmiah Rekam Medis dan Informasi Kesehatan STORAGE: Jurnal Ilmiah Teknik dan Ilmu Komputer The Indonesian Journal of Computer Science Jurnal Informatika Dan Tekonologi Komputer
Imam Sutanto
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Medicine & Pharmacology Nursing Public Health Veterinary Other

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Pengembangan Sistem Customer Relationship Management (CRM) Berbasis Web Dengan Workflow Dinamis Untuk Peningkatan Proses Penjualan Fadilah, Muhamad Akbar; Ratna Yulika Go; Hermansyah; Imam Sutanto
The Indonesian Journal of Computer Science Vol. 14 No. 5 (2025): The Indonesian Journal of Computer Science
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v14i5.4840

Abstract

The limitations of conventional static and inflexible Customer Relationship Management (CRM) systems have resulted in significant challenges in adapting to the specific needs of various types of businesses, with PerFormance being restricted in terms of flexibility to adapt to market changes. After implementing a CRM system with a static Workflow, PT Rintis Sejahtera recorded significant improvements, such as a 35% increase in customer request handling speed and a 28% increase in customer satisfaction. This research aims to develop a web-based CRM system with dynamic Workflows that can enhance operational Efficiency and effectiveness, allowing it to adapt to future changes. The study focuses on implementing web technologies to design and develop a CRM system capable of adjusting Workflows according to the specific needs of the user company. The research methodology used in this study includes the PIECES framework and the Waterfall model. The PIECES approach covers aspects such as PerFormance, InFormation, Economics, Control, Efficiency, and Service, which are applied to analyze and design a better CRM system. Additionally, the Waterfall method is used to ensure that each stage of system development, from requirements analysis to testing, is carried out sequentially and systematically. The combination of these two methods aims to produce a functional system that meets user expectations. The results of the study show that the web-based CRM system with dynamic Workflows successfully improved operational Efficiency and effectiveness by 50% in customer request handling speed and 45% in customer satisfaction. System testing was conducted using the Black Box Testing method, with the evaluated indicators focusing on the Expected Results of each system function, such as respone speed, the ability to manage dynamic Workflows, and user satisfaction levels. The test results indicate that the system is fully functional and meets all expected requirements.
KEAMANAN TRANSMISI DATA PADA SISTEM IOT MELALUI PENERAPAN METODE CHECKSUM SHA-256, AES-128 UNTUK PENCEGAHAN DATA TAMPERING I Putu, I Putu Bayu Krisna Priastawan; Nugroho budhisantosa; Popong Setiawati; Imam Sutanto
STORAGE: Jurnal Ilmiah Teknik dan Ilmu Komputer Vol. 4 No. 4 (2025): November
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/storage.v4i4.6428

Abstract

MQTT is a communication protocol in IoT that operates using a publish-subscriber scheme, where the publisher sends data to the broker and the data is forwarded to subscribers that are subscribed to the respective topic. Protecting data from cyberattack threats is one of the critical aspects, particularly against manipulation attempts such as data tampering attacks that can make it inaccurate and even potentially produce false information. Therefore, methods such as the SHA-256 checksum, the salt technique, and AES-128 can be utilized to prevent data tampering threats. Based on the testing results, the average detection and prevention rate of data tampering attacks reached 100%, and the average amount of data successfully received by the subscriber was 94% of the total topic data transmissions during the testing. The developed security system is not yet perfect, because the system can only prevent attacks on the subscriber side. To fully prevent data tampering attack, additional security measures such as TLS, SSL, or using port 8883 on MQTT are required so that communication can take place privately.
Pengukuran Kinerja dan Keamanan Server di RSUD Koja Alita Sandy Putriani; Arief Ichwani; Hosizah Hosizah; Imam Sutanto
Jurnal Informatika Dan Tekonologi Komputer (JITEK) Vol. 6 No. 2 (2026): Juli : Jurnal Informatika dan Tekonologi Komputer
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jitek.v6i2.11203

Abstract

The rapid development of health services currently requires every health service provider to be able to immediately meet the desires of its customers. The use of information technology requires a comprehensive security system. One of these security is physical security. In addition to physical security, the need to store and use data quickly needs to be a must for organizations. This type of research is qualitative research with a case study approach. The results of this study, to measure server performance using the JMeter tool. Testing was carried out on the web from the Nutanix server with 3 tests. So there is a difference in the number of requests where in test 3 the number of requests increased much more with a lower number of samples than the number of requests and the number of samples from the previous 2 tests. While to measure server security using OWAS ZAP with very good results, there is only 1 with a high risk level, namely a vulnerability with a high impact.
SIMRS Success through User Satisfaction Using DeLone McLean and Demographic Factors Tria Saras Pertiwi; Natalia Vanesia Setiawan; Hosizah Markam; Imam Sutanto
Jurnal Infokes Vol 16 No 1 (2026): Jurnal Ilmiah Rekam Medis dan Informatika Kesehatan
Publisher : Universitas Duta Bangsa Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47701/n44r9g30

Abstract

Digital transformation in the healthcare sector encourages hospitals to adopt Hospital Information Systems (HIS), known in Indonesia as SIMRS to improve service efficiency and data management quality. However, the success of SIMRS implementation is strongly influenced by system quality, information quality, service quality, and users’ perceptions of the technology. This study aims to evaluate the success factors of SIMRS at RSIJ Pondok Kopi by integrating Perceived Usefulness and demographic factors into the DeLone and McLean (D&M) Information System Success Model through user satisfaction. This research methode is a quantitative design with cross sectional study using the PLS-SEM approach. The sample consisted of 62 SIMRS users selected using a total sampling technique. The study was conducted from May to August 2025. The results show that information quality and system quality significantly affect perceived usefulness, perceived usefulness significantly affects user satisfaction, and user satisfaction significantly affects net benefits. In addition, perceived usefulness has a significant indirect effect on net benefits. Meanwhile, demographic factors are not the main determinants of SIMRS success. Therefore, hospital management is recommended to prioritize improving information quality to optimize the effectiveness of SIMRS implementation.
Co-Authors Alita Sandy Putriani Fadilah, Muhamad Akbar Hermansyah Hosizah Hosizah Hosizah Markam I Putu, I Putu Bayu Krisna Priastawan Ichwani, Arief Natalia Vanesia Setiawan Nugroho Budhisantosa Ratna Yulika Go Setiawati, Popong Tria Saras Pertiwi