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Jurnal Informatika
Published by Institut Informatika dan Bisnis Darmajaya
ISSN : 16933877     EISSN : 24071544     DOI : http://dx.doi.org/10.30873/ji.v20i2
Core Subject : Science,
Computer Science & IT
Jurnal Informatika. Jurnal Informatika adalah jurnal cetak dan elektronik sebagai media untuk mempublikasikan hasil penelitian dan pemikiran kalangan akademisi, peneliti dan praktisi bidang informatika. Jurnal Informatika Terbit 2 kali dalam setahun yaitu Bulan Juni dan Desember dengan No. ISSN : 1693-3877 dan No. e-ISSN : 2407-1544.
Arjuna Subject : Ilmu Komputer (semua kategori) - Ilmu Komputer (Lain-Lain)
Articles 310 Documents
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SISTEM STEGANOGRAPHY DENGAN METODE LEAST SIGNIFCANT BIT (LSB) & METODE CAESAR CIPHER BERBASIS ANDROID Abrar Hiswara; Aida Fitriyani; Reza Adi Nugraha
Jurnal Informatika Vol 20, No 1 (2020): Jurnal Informatika
Publisher : IIB Darmajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30873/ji.v20i1.1615

Abstract

This research aims at information security in the form of document files, documents are casual but have a vital role, due to many cyber crimes that try or commit data theft, illegal access or misuse of documents that are used as a particular crime tool. the software development method uses the Rapid Application Development (RAD) model, while the research method applies the Least Significant Bit (LSB) method of hiding information into a digital media (image) as a steganographic technique and Caesar Cipher as a cryptographic technique that encrypts * document filename into aform Caesar randomly characters. The results of the study resulted in an android-based steganography system that uses the Java programming language, as data security for document systems using the least significant bit and caesar cipher method as a top priority and making the system more friendly and interactive to be used easily by users. Steganography system is considered to provide an alternative for users as a system that is able to maintain the confidentiality of documents and provide information to users of the importance of a data security measure.
SISTEM INFORMASI PERPUSTAKAAN SMP SANTO LOUIS PALEMBANG Ermatita -
Jurnal Informatika Vol 16, No 1 (2016): Jurnal Informatika
Publisher : IIB Darmajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30873/ji.v16i1.940

Abstract

The development of information technology has been absolutely used by various institutions and organizations. Library on SMP St. Louis is a unit that serves the students, and have a lot of activity such as borrowing books, serve the creation of a membership card, manage the available data books and every transaction that occurs in the library. For it will be built the library information system at SMP St. Louis. This system was developed by FAST method. The results of this study are Informs library system that manages the data in the library. Given this system will simplify the management of the library. Additionally this system will provide services to students to more easily get information about books in a library. With the existence of the library information system then reports all activity in the Library, as well as information about the existence of the book easy to navigate.  Keywords: FAST, Information System, library 
PERANCANGAN SISTEM PENDUKUNG KEPUTUSAN PEMILIHAN SUPLIER BAHAN BAKU DENGAN METODE AHP (Analitycal Hierarchy Process) Ferry Irmawan; Fitri Marissa
Jurnal Informatika Vol 18, No 2 (2018): Jurnal Informatika
Publisher : IIB Darmajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30873/ji.v18i2.1130

Abstract

This research was conducted because of the problem of the limitations of the media used in the process of selecting raw material suppliers at PT. Mayatama Manungal Sentosa, Malang. This study aims to design a decision support system that is able to help the company's performance in determining suppliers of raw materials using the AHP (Analytical Hierarchy Process) method. The Analytical Hierarchy Process (AHP) method is a method used in designing a decision support system. The concept used by the AHP method is to change qualitative values into quantitative values. So that the decisions taken can be more objective. The results of the research are application systems that have been tested and stated to meet the expected objectives. Based on the AHP method test can be produced the following score MANUFACTURER-A, which is 0.437462933, then PRODUCER-B is 0.285721883, and PRODUCER-C is 0.279084967.Keywords : Analytical Hierarchy Process (AHP) Method
IMPLEMENTASI KENDALI PID PENALAAN ZIEGLER-NICHOLS MENGGUNAKAN MIKROKONTROLER Zaidir Jamal
Jurnal Informatika Vol 15, No 1 (2015): Jurnal Informatika
Publisher : IIB Darmajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30873/ji.v15i1.410

Abstract

PID control has been widely used in industry  as well as been implemented in the control of the liquid level . The research objective is to design  PID controller base on microcontroller  and then apply it on the miniature hopper-conveyor plant to maintain solid levels of raw materials to remain constant . The dimension of hopper is 25 cm long, 20 cm wide and 25 cm high. The design of PID control uses a separate action based on microcontroller and for the  tuning uses open-loop Ziegler-Nichols. The design is implemented in miniature hopper-conveyor plant to move the raw material form of green beans to the hopper using a screw conveyor. The screw conveyor is  rotated by a three phase induction motor with inverter speed drive. Level in the hopper is measured by using an ultrasonic sensor module build-in the data acquisition program . The experimental results of implementation on the miniature hopper-conveyor plant shows that PID control provides good performance such as overshoot occurs in  1 cm, or 0.05 % of set point and risetime shows 280 seconds. Key words: PID controller, microcontroller, Ziegler-Nichols, Hopper-conveyor plant
SISTEM PENDUKUNG KEPUTUSAN PEMBERIAN SANKSI PELANGGARAN KEDISIPILAN SISWA PADA SMK PGRI I KEDONDONG Sri Ipnuwati
Jurnal Informatika Vol 14, No 2 (2014): Jurnal Informatika
Publisher : IIB Darmajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30873/ji.v14i2.657

Abstract

Violation of school rules is often done by the students, among others, the increasingly widespread irregularities norms of religious and social life which is manifested in the form of lack of respect for teachers, less disciplined with time and did not heed the order and regulations of the school, and others. This study builds a decision-making system sanctioning the violation of discipline that has the ability to analyze where each of the criteria in this regard and alternative assessment factors. In this case the students who violate the rules will be sanctioned or point giving priority output intensity value that results in a system that provides an assessment of the student. This decision support system to help make an assessment of each student, to change the criteria and point value changes. It is useful to facilitate decision-making on issues related to discipline. Applications that are created can be used to assist in data processing violations of school discipline, especially the violation of students at SMK PGRI I kedondong the District Kedondong Pesawaran District Lampung Province, and can simplify and accelerate data processing, the student disciplinary violations. With the decision support system is expected to relevant officials would have no difficulty in determining the student who commits an offense (indiscipline) school and for students who violate Rather, they will be sanctioned or point.Keywords: SPK, Violation, Discipline.
SISTEM PENUNJANG KEPUTUSAN PENERIMA BANTUAN DESA DI KECAMATAN KLUNGKUNG DENGAN METODE SAW Ni Kadek Sukerti
Jurnal Informatika Vol 14, No 1 (2014): Jurnal Informatika
Publisher : IIB Darmajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30873/ji.v14i1.511

Abstract

Community based development program is a government program to alleviate poverty. This program funds the community in a village in economic activity to create jobs or job opportunities, capital, and also business development. CBD is running well in Bali because of the facilitators who continuously administer this program. However, it is necessary to have a system that can help the facilitators to select the beneficiaries of CBD program. One of the villages that propose to be the beneficiary is Klungkung village. This research objective is to build a decision support system using Simple Additive Weighting (SAW) method with assessment criteria include the houses condition of the village, income of each family in the village, education, and the natural condition of the village. The stages of this research are data collecting, interview and observation, analysis, design, implementation, and testing. This research results a decision support system to help the decision makers to select the beneficiaries of the program fund.Keywords: Decision Support System, Beneficiary, SAW
RANCANG BANGUN APLIKASI PENJUALAN DAN JASA SERVICE PADA SHOWROOM EXPO YAMAHA MOTOR DI KOTA PERDAGANGAN KABUPATEN SIMALUNGUN Ilham Alfaridzi; Dedi Suhendro; Iqbal Sanjaya
Jurnal Informatika Vol 19, No 2 (2019): Jurnal Informatika
Publisher : IIB Darmajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30873/ji.v19i2.1854

Abstract

Motorbikes are motorized vehicles that have two wheels. in a straight line lined up so that when the conditions go at high speed it remains stable because of the gyroscopic force. Moving at high speeds continues to run stable and at low speeds stability always depends on the settings. In Indonesia motorbike users are very popular because they are cheap, easy to reach, save fuel and the maintenance costs are not large. One of the most famous motorbikes in Indonesia is Yamaha with its founder from Japan named Yama Tarakusu. Yamaha motorbike is a service for consumers in providing motorized vehicle maintenance because it is designed by reliable experts. Yamaha Motor Trade Expo Showroom Simalungun Regency dealers selling motorcycles, spare parts while providing service services for consumer motorcycle vehicles have not been maximized and have not been satisfactory because they are still done manually on sales, especially in selling spare parts because there is no fast and accurate information regarding stock or inventory. In terms of service services, there is also no application system running at the Yamaha Motor Trade Expo Showroom in Simalungun Regency. The design of sales and service applications aims to facilitate and accelerate the sales data processing and motorcycle service, so that the administration of sales and information is faster and more accurate. Departing from this, the author designed the application of sales and service services at the Yamaha Motor Trade Expo Showroom in Simalungun Regency in the hope that sales applications and service services can provide fast, precise and accurate information.Keywords : Sales, Motorcycle Services, Microsoft Visual Studio 2010, MySQL
DESAIN SISTEM JARINGAN PENGONTROL AKTIVITAS PRAKTIKUM MAHASISWA DI LABORATORIUM KOMPUTER STMIK DARMAJAYA Yulmaini Yulmaini, S.Kom., M.Cs
Jurnal Informatika Vol 7, No 1 (2007): Jurnal Informatika
Publisher : IIB Darmajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30873/ji.v7i1.462

Abstract

  Practice is a study method in the university particular in the part of sains. In learning of some subject, practice should be done to reach instructional aim maksimally. Fasility which support that practice activyty is computer laboratory.   Practice activity in STMIK darmajaya is a important thing to student  fluency in practicing the theories that they have got. Therefire, a system which can control all of practice activity is needed. This control link system is mode to adapt the working system of VNC (Vitual Network System), borland delphi 7 software to arrage its software. This software can operate computer in far distance, software which is used in arrangeing software is borland delphi 7.   This research suggest a software whis is usefull to control student practice activity in computer laboratory. By that software coocrdinator, leacture or laboratory asistant can see and contol student activity in computer laberatory so that will su suport seriouse activity and increase student’s seriously in doing practice.   Keyword : Network System Control
PENERAPAN MODEL ENTERPRISE ARCHITECTURE UNTUK MENENTUKAN SISTEM INFORMASI DI SEKOLAH MENEGAH ATAS MENGGUNAKAN EAP (STUDI KASUS : SMA NEGERI I SUKOHARJO) Yasir Sipung
Jurnal Informatika Vol 16, No 2 (2016): Jurnal Informatika
Publisher : IIB Darmajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30873/ji.v16i2.955

Abstract

Enterprise Architecture Planning is a method used to build an information architecture. Literally Enterprise Architecture Planning or EAP is a method of data quality planning approach that is oriented to business needs and how the implementation of the architecture is done in such a way in an effort to support the business wheel rotation and the achievement of mission information systems and organizations. Basically EAP is not designing the business and its architecture, but it defines the business needs and architecture. In EAP, architecture describes the data, applications and technologies needed to support the organization's business. SMA Negeri I Sukoharjo, as one of the providers of secondary education, also did not escape the need to define business needs and information architecture so that the direction of organizational development policy strategy can be well planned. this research is expected to SMP Negeri 1 Sukoharjo can have a good blueprint architectur enterprise and can be used as a proposal material to develop the information system, that is by building Enterprise Architectur Planning by using Zachman Framework which will produce a roadmap implementation of information system that is structured. Keywords:  Enterprise Architecture Planning, Zachman Framework, system, and roadmap.
PEMODELAN MESIN JAJA (VENDING MACHINE) DENGAN MENGGUNAKAN OBJECT ORIENTED ANALYSIS AND DESIGN Fitria Kenali; Ayu Kartika Sari
Jurnal Informatika Vol 8, No 1 (2008): Jurnal Informatika
Publisher : IIB Darmajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30873/ji.v8i1.609

Abstract

Vending machine is one of hardware that the system was build using an object oriented approach. Almost half of human job related with it, then the development system of automatic machine getting fast to adapt human needed nowdays.Visual Modeling is the process of taking the information from the model and displaying it graphically using standar set of graphical elements. The standard is vital to realizing one of the benefits of visual modeling: communication. Communication between users, developers, analysts, testers, managers and anyone else involved with a project is the primary purpose of  visual modeling. We can use Unified Modeling Language when make visual modeling. UML is industry-standard modeling notation for object-oriented system, and is the premiere platform rapid application development. One of the primary advantages of the object-oriented modeling is the ability  to build components once and then use them over and over again. We can reuse a basic piece of object-oriented design code in desired system.All in all, visual modeling make easy in implementing software of vending machine those it can increase work time efficiency in developing a vending machine system especially, and generally fulfill human need nowdays. Keyword : Vending Machine, Unified Modelling Language 

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