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INDONESIA
ALGORITMA : JURNAL ILMU KOMPUTER DAN INFORMATIKA
Published by Universitas Islam Negeri Sumatera Utara
ISSN : -     EISSN : 25986341     DOI : 10.30829/algoritma
Core Subject : Science,
Computer Science & IT
Arjuna Subject : -
Articles 11 Documents
 1   2 
Search results for , issue "Vol 7, No 1 (2023): April 2023" : 11 Documents clear
Sistem Kriptokompresi Menggunakan Algoritma Asimetris Rabin-P dan Algoritma Lossless Compression Golbach Code Wardani, Tri Joko; Lubis, Imran; Chiuloto, Kalvin
Algoritma: Jurnal Ilmu Komputer dan Informatika Vol 7, No 1 (2023): April 2023
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v7i1.15354

Abstract

The in line line with the development of information technology, information security must also be considered. Advances in information technology provide many advantages for the survival of human life, but the advantages offered by technology also cause losses such as data theft. Data originating from word processing documents is one form of document that is commonly used to store information, whether private or confidential. The security issues are one of the most important aspects in the world of information technology which is a human need in the era of globalization, for example document security. Therefore, document security is very necessary and must be protected from irresponsible parties, either when stored in storage or when distributed. In addition to the security aspect, the thing that needs to be considered is also about the storage media. Therefore, additional steps are needed to streamline the storage media by compressing the data that has been secured so that its size becomes smaller. In this study, we will combine cryptographic techniques and compression techniques called cryptocompression. The cryptocompression system in this research is applied by encrypting data in text files using the public key of the Rabin-p algorithm which will produce an encrypted text file. Then it is compressed using Goldbach Code lossless compression algorithm to reduce its size. From the results of this test, it is concluded that the cryptocompression system is able to maintain the confidentiality of information because it has been encrypted and can save more efficient storage space because it has been compressed first. Text files that have been encrypted and compressed can be returned to the original file through a decompression and decryption process according to the size and number of characters contained in the original text file.Keywords : Cryptography, Compression, Cryptocompression, Rabin-p, Goldbach Code
Pemanfaatan Sinyal Ekspansi Radius Berbasis Konektivitas Bluetooth Menggunakan Antenna Eksternal Pada Sistem Pengendalian Pencahayaan Williyandi, Rizky; Liza, Risko; Suriati, Suriati
Algoritma: Jurnal Ilmu Komputer dan Informatika Vol 7, No 1 (2023): April 2023
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v7i1.15366

Abstract

Control of the lighting system is a form of implementation of a home control system that is categorized into the form of IoT in the lamp category, this system provides convenience to homeowners, namely users to be able to control home lights using an Android smartphone. In designing the system, the author implements the switch on the lamp to be replaced by using a relay device which is controlled via a microcontroller device based on a Bluetooth connection so that it can be connected to an Android smartphone that has been configured in the lighting control program application using Bluetooth. The design is carried out using a qualitative-based development method. The results of this test provide data in the form of each type of antenna such as yagi, parabolic, and helix giving different connectivity test results in tests carried out in open spaces. Keywords: Android, Mikrokontoler, Relay, Bluetooth,Antena
Perancangan Sistem POS Dengan Memanfaatkan Code Igniter Sebagai Framework Berbasis Web (Studi Kasus : Warung Jus Khupi 7) Saan, Muhammad Yasir; Dalimunthe, Yulia Agustina; Irawan, Dedy
Algoritma: Jurnal Ilmu Komputer dan Informatika Vol 7, No 1 (2023): April 2023
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v7i1.15367

Abstract

Sales made manually become a problem for entrepreneurs who move especially in the culinary field. The reason is that it is less effective and efficient because recording and sales sometimes experience things in the form of missed calculations made by a human as well as factors such as lost or damaged manual records. This is also experienced by Warung Jus Khupi 7 where the sales system is still using manual methods when processing data in sales transactions. The development of information technology becomes a point of solution to the problems that exist in the business of juice stalls Khupi 7 engaged in culinary, especially the sale of coffee than needed a system with a user interface in the form of Point of Sale applications that can provide convenience to business owners and workers in conducting sales transactions and data processing of goods and making reports. The results of this study are an implementation of the design of web-based point of sale applications with code igniter framework and selected programming languages on the web, namely PHP, MySQL, and UML that can make the process of sales transactions of goods data processing and report making more effective and efficient Keywords: Point Of Sale, PHP Web, Mysql, Code Igniter
Rancang Bangun Sistem Informasi Penggajian Berdasarkan Absensi Kehadiran Pada Kantor Azhar Maksum dan Rekan Kamil, Azmi; Hasdiana, Hasdiana; Lubis, Husni
Algoritma: Jurnal Ilmu Komputer dan Informatika Vol 7, No 1 (2023): April 2023
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v7i1.15262

Abstract

Kantor Azhar Maksum Dan Rekan merupakan perusahaan konsultan pajak yang selama ini masih menggunakan sistem manual penggajian dimana bagian adminstrasi masih menghitung jumlah kehadiran melalui absensi menggunakan foto selfie dari hp karyawan masing - masing. Dari kasus tersebut sering terjadi kesalahan data karna absensi yang di lakukan belum terkoneksi dengan sebuah sistem penggajian yang dimana selama ini bagian administrasi menghitung gaji berdasarkan jumlah kehadiran dan lembur jika ada. Berdasarkan permasalahan yang sudah dijelaskan, penulis coba membuat sistem informasi penggajian berdasarkan tingkat absensi kehadiran dari karyawan dengan menambahkan fitur selfie serta gps di dalam sistem yang akan dirancang.berdasarkan permasalahan diatas penulis melakukan penelitian dengan membuat aplikasi absensi beserta dengan sistem penggajian dengan menggunakan metode OOAD, metode OOAD mencakup analisis dan desain sebuah sistem dengan pendekatan objek, yaitu Analisis Berorientasi Objek (OOA) dan Desain Berorientasi Objek (OOD). Dengan hasil penelitian ini sistem berjalan dengan normal dan pegawai bisa menggunakan absensi tersebut.
Penerapan Metode Mabac Dalam Menentukan Kopi Terlaris Berdasarkan Tingkat Harga Pada Perusahaan Kopi Kenangan Hidayat, Aprizal; Siregar, Dodi; Handoko, Divi
Algoritma: Jurnal Ilmu Komputer dan Informatika Vol 7, No 1 (2023): April 2023
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v7i1.15368

Abstract

Kopi Kenangan is a coffee beverage company founded in Indonesia in 2017 by Edward Tirtanata, James Prananto and Cynthia Chaerunnisa. Currently, Kopi Memories has opened as many as 230 outlets throughout Indonesia. Various menus have been served at Kopi Memories, especially at Kopi Memories, which is located in the city of Medan, so far there are 60 menus available. The number of menus that have been presented, sometimes people who just want to buy memories coffee products are still confused in choosing the best-selling memory coffee products in their coffee products, plus there is no system in determining the best-selling coffee for memories coffee. Departing from the problems above, the author is interested in making a decision support system in determining the best-selling coffee products based on price and sales levels. The decision support system itself is a system that is able to provide both problem-solving abilities and the ability to solve semi-structured problems. The decision system method used is the MABAC method which is a multi-criteria comparison method. This method was chosen because, service companies with other methods of multi-criteria decision making and this study resulted in the memory of Thai tea coffee products succeeded in producing the best products with a calculation value of 0.331616 Keywords: Mabac, Memories Coffee, Decision Support System
Mendeteksi Tingkat Kematangan Belimbing Berdasarkan Fitur Warna Menggunakan Transformasi Ruang Warna HSI Sundari, Siti; Siburian, Indah Natalia; Wulan, Nur
Algoritma: Jurnal Ilmu Komputer dan Informatika Vol 7, No 1 (2023): April 2023
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v7i1.15263

Abstract

Penelitian ini mengembangkan sistem aplikasi untuk mendeteksi tingkat kematangan belimbing dengan transformasi warna HIS. Subjek penelitian adalah membangun sistem aplikasi untuk mengenali dan menentukan kematangan belimbing berdasarkan fitur warna menggunakan aplikasi Matlab 2015. Data dalam penelitian ini menggunakan gambar belimbing yang diambil dengan kamera, yang kemudian akan mengekstrak karakteristik warna, dan menghitung tingkat kandungan warna dari R (merah), G (hijau), dan B (biru) dan dikonversi ke HSI. Dari hasil penelitian, 10 sampel belimbing yang terdiri dari buah mentah dan setengah matang, serta sudah matang dengan menghitung nilai rata-rata maksimum dan minimum H dan S memperoleh persentase sebesar 85%. Kata kunci : Belimbing, Matlab, Deteksi kematangan, transformasi ruang warna HSI.
Penerapan algoritma Shortest Job First ( SJF) dan Priority Scheduling (PS) Pada Maintanance Mesin ATM Sundari, Siti; Syahputra, M Yogie; Rismayanti, Rismayanti
Algoritma: Jurnal Ilmu Komputer dan Informatika Vol 7, No 1 (2023): April 2023
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v7i1.15377

Abstract

In the banking world there are scheduling problems and is one of the important aspects for the smooth operation of the company, especially in the ATM (automatic teller machine). There is no initial system in scheduling repairs and charging money a cash machine so it is necessary to run the company's operations well. In this study wanted to propose a scheduling system that uses two algorithms that can be used as a comparison in scheduling. Algorithms that can be implemented in a queue system, one of which is SJF (Shortest Job First) and Priority Scheduling. The existence of applications with this system, users can know the schedule of preventive maintenance so as to facilitate the division of operation maintenance in the company in carrying out their respective duties. Key Words: ATM(automatic teller machine), Shortest Job First, Priority Scheduling
Implementasi Liniear Congruential Generator Pada Pembangkitan Inizialization Vector Pada Kriptografi CBC Sederhana Riski, Sari Kurnia; Tommy, Tommy; Budiman, Arief
Algoritma: Jurnal Ilmu Komputer dan Informatika Vol 7, No 1 (2023): April 2023
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v7i1.15409

Abstract

In this era of increasingly advanced technology, data security is very important in maintaining the confidentiality of information, especially those containing sensitive information whose contents should only be known by the entitled party, especially if the delivery is made through a public network, if the data is not secured first. , will be very easy to be tapped and the contents of the information known by parties who do not have the authority. One way that is used for data security is to use a cryptographic system, namely by encoding or keying the information content using a data locking algorithm method. Here this author will discuss about generating IV using the LCG algorithm are combined by XORing everyption method in simple CBC cryptography where these two algorithm are combined by XORing every bit that exists with the key or block provided. Aims to produce plaintext that has been convertd into ciphertext or secret data. Keywords : data security, cryptographic algorithm lcg, xor cipher, simple cbc method.
Perancangan Media Pembelajaran Multimedia Interaktif Peninggalan Sejarah Indonesia Menggunakan Metode Web Based Learning (Study Kasus : SDS Cerdas Bangsa Namorambe) Sinuhaji, Suanti Perwita Br; Allwine, Allwine; Wijaya, Vera; Mardiah, Mardiah
Algoritma: Jurnal Ilmu Komputer dan Informatika Vol 7, No 1 (2023): April 2023
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v7i1.15616

Abstract

Education is one area that has a strong influence on internet technology, especially in teaching and learning activities. Technological development is inseparable from the utilization of Human Resources (HR) in supporting learning and being a solution in a lack of learning media on Indonesian historical heritage material in the SDS Cerdas Bangsa Namorambe Case study, especially in class IV SD students. Therefore the authors conducted research on interactive multimedia learning media. This learning media was made due to the lack of learning media so that the lack of design in learning made students less interested in the teaching and learning process so that it was made using web based learning methods. Web Based Learning (WBL) is a technology-based learning system that is used as the utilization of web technology in learning by delivering access to material through web pages. In developing the system used system analysis use case diagrams and activity diagrams with the type of research using the Research and Development (R & D) method. Keywords:Learning Media, Interactive Multimedia, Web Based Learning.
Klasifikasi User Berdasarkan Trafik Http/Https Menggunakan Metode Naïve Bayes Prayoga, Eko; Diansyah, T.M; Liza, Risko
Algoritma: Jurnal Ilmu Komputer dan Informatika Vol 7, No 1 (2023): April 2023
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v7i1.15698

Abstract

Along with the times and accompanied by advances in information and communication technology, it is undeniable that at this time all activities use information technology. One of the activities is to use the internet. The research will conduct a classification based on internet usage data obtained through questionnaires using data mining techniques. The attributes that will be used in doing the classification are Name, Age, Gender, Last Education. The method used is the Naïve Bayes method, which is one of the classification techniques in data mining. Based on the research conducted, it was concluded that based on internet user data used as training data, the Naïve Bayes method succeeded in classifying 32 data from 50 data tested. So the Naïve Bayes method succeeded in predicting the magnitude of the percentage of accuracy by 64%. Keywords : Data Mining, Classification, Naïve Bayes

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