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Scientific Journal of Informatics
Published by Universitas Negeri Semarang
ISSN : 24077658     EISSN : 24600040     DOI : -
Core Subject : Science,
Computer Science & IT
Scientific Journal of Informatics published by the Department of Computer Science, Semarang State University, a scientific journal of Information Systems and Information Technology which includes scholarly writings on pure research and applied research in the field of information systems and information technology as well as a review-general review of the development of the theory, methods, and related applied sciences.
Arjuna Subject : -
Articles 564 Documents
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Geographic Information System for Booking Beauty Salon and Barber Shop with an Android-Based ECRM Approach Dharma Krisna Putra, Kadek; Piarsa, I Nyoman; Sukarsa, I Made
Scientific Journal of Informatics Vol 7, No 1 (2020): May 2020
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v7i1.22675

Abstract

Beauty salons and barber shop are a necessity for almost everyone. Nowadays, the business processes of them mostly still use conventional methods. The method gives obstacles to customers who have a lot of activities, for example, they have to come directly to the beauty salon or barber shop to take the queue. In addition, it is hard to promote, communicate and assess without E-CRM media. The location is also difficult to find because there is no guide mark on Google Maps. The Geographic Information System for Booking Beauty Salon and Barber Shop provides solutions for making scheduled bookings and transactions by using the e-CRM approach as in the application of promotional features to attract customers. There are some features offered in the application, such as chat features for communication, rating and review features to assess the services obtained, and route feature as a solution to show the location of selected vendors. The implementation process requires an Android smartphone and a computer device with software including Android Studio, SQLYog, XAMPP, and Visual Studio Code. The results of the implementation of the system based on the questionnaire showed 25.8% answered 'excellent', 45.7% answered 'good', 28.3% answered 'enough', and 0.2% answered 'bad'.
Identifikasi Kualitas Beras dengan Citra Digital Nurcahyani, Arissa Aprilia; Saptono, Ristu
Scientific Journal of Informatics Vol 2, No 1 (2015): May 2015
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v2i1.4530

Abstract

Beras merupakan makanan pokok yang paling banyak di konsumsi oleh masyarakat Indonesia. Namun, harga beras di pasaran justru semakin melonjak, sehingga banyak beredar beras yang memiliki kualitas kurang baik. Oleh karena itu perlu adanya standar kualitas mutu dari pihak gudang beras saat mendistribusikan beras ke pasaran. Standar pengujian kualitas dari pihak Bulog terdapat dua tahap, yaitu uji laboratorium dan uji visual. Namun, pengujian secara visual selama ini masih dilakukan secara manual sehingga masih sering terjadi kesalahan karena terbatasnya penglihatan manusia dan subjektivitas penguji. Oleh karena itu, sistem pengujian secara visual dengan citra digital dapat menjadi solusi yang efektif untuk permasalahan tersebut. Proses pengujian dapat dilihat dari nilai putih, nilai bersih, dan nilai utuh beras yang diakuisisi melalui pengolahan citra digital. Proses akuisisi nilai bersih dan putih dilakukan dengan menganalisis nilai HSV (Hue, Saturation, Value), sedangkan nilai utuh dilakukan dengan menganalisis luas region area objek. Sebelumnya, dilakukan training terhadap 30 data untuk mendapatkan decision tree dengan model ID3 (Iterative Dichotomiser Tree). Data yang telah diakuisisi kemudian diklasifikasi ke dalam 3 kelas yaitu baik, kurang dan buruk dengan menggunankan aturan dari decision tree yang dihasilkan pada proses training. Hasil pengujian dengan metode k-fold cross validation dengan k=5 didapatkan akurasi sebesar 96.67%.
Geographical Information System of Bus and Travel Counter in Padang City Using BFS Method Based on Mobile Web Sularno, Sularno; Astri, Renita; Anggraini, Putri; Prima Mulya, Dio; Mulya, Dwiki
Scientific Journal of Informatics Vol 8, No 2 (2021): November 2021
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v8i2.33117

Abstract

Purpose: One of the main objectives of the research is the BFS (Breadth-First Search) algorithm method in the search for nearby bus and travel counters using GPS found on each device used in the search process. Each smartphone produces a different coordinate point with an average distance difference of 30.2 meters to the hardware coordinate point. Each GPS embedded in the smartphone will process the data according to the location conditions of the user's point of existence. The methodology for system development is a standard process for a team of developers to connect all the steps needed in analyzing, designing, implementing, and maintaining information systems. Methods: The methodology becomes a guideline in system development activities in SDLC. The SDLC model used in this study is the WaterFall Model. Result: The results of this study are expected to facilitate the public in booking tickets and to find the nearest location from the bus and travel counters. Novelty: The novelty of this research is the development of GIS as a search for the location of bus and travel counters using the breadth-first search algorithm. This research can help the community find the location of the nearest bus and tourist counter in the city of Padang.
Java Card Approach to Emulate The Indonesian National Electronic ID Smart Cards Priyasta, Dwidharma; Cesar, Wahyu; Susanti, Yanti; Junde, Juliati
Scientific Journal of Informatics Vol 5, No 2 (2018): November 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v5i2.16347

Abstract

This paper presents a successful effort in emulating the Indonesian national electronic ID smart cards using Java Card. The aim is to provide theopportunity for other smart card products to contribute in the national electronic ID program. The life cycle status, the file system concept, commands and security procedures implemented in the Indonesian national electronic ID were reproduced and emulated ina Java Card applet. In the first stage, the emulator applet was tested using some test scenarios developed during the implementation phase. Later on, the emulator applet was tested in the real system under supervisioned by Direktorat Jenderal Kependudukan dan Pencatatan Sipil in order tomeasure its reliability as well as to determine that its behaviour is identical with the Indonesian national electronic ID. The results confirmed that this approach was fruitful.
Metode Fuzzy Inference System untuk Penilaian Kinerja Pegawai Perpustakaan dan Pustakawan Alamsyah, Alamsyah; Muna, Izza Hasanul
Scientific Journal of Informatics Vol 3, No 1 (2016): May 2016
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v3i1.6136

Abstract

Penilaian kinerja pegawai merupakan aspek penting dalam manajemen sumber daya manusia yang efektif. Hal ini dikarenakan melalui penilaian kinerja pegawai, sebuah lembaga dapat mengetahui kondisi kerja dari pegawainya. Dalam melakukan penilaian kinerja, tiap lembaga mempunyai cara dan sistem tersendiri. Salah satu metode yang digunakan untuk mengukur kinerja pegawai perpustakaan dan pustakawan adalah metode fuzzy inference systems (FIS). FIS adalah suatu kerangka komputasi yang didasarkan pada teori himpunan fuzzy, aturan fuzzy dan penalaran fuzzy Adapun metode FIS yang dipakai adalah metode Sugeno orde 0 dengan variabel yang dipakai sebagai tolok ukur kinerja adalah produktivitas, profesionalitas, kedisiplinan, dan masa kerja. Keempat variabel ini digunakan untuk mengukur penilaian kinerja pegawai perpustakaan dan pustakawan. Hasil pengujian dan analisis yang telah dilakukan terhadap 50 pegawai, diperoleh skor kinerja pegawai tertinggi yaitu 90,89 dan skor kinerja terendah adalah sebesar 80,77. Dengan demikian dapat disimpulkan secara keseluruhan, kinerja pegawai perpustakaan dan pustakawan mendapat predikat sangat bagus. 
Mobile Note Application for Bendesa Adat at Bali Sudana, Oka; Mahardika, Oka; Dharmaadi, I Putu Arya
Scientific Journal of Informatics Vol 6, No 2 (2019): November 2019
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v6i2.19705

Abstract

Bendesa Adat is the head of village whose job is to coordinate customary matters in the village he leads, for example, the piodalan ceremony and also the dewasa ayu, especially the dewasa ayu pengabenan of the village. Dewasa ayu is a great day in doing an activity that is believed by the people in Bali. Determination of dewasa ayu and also piodalan has the calculations in accordance with the Balinese Calendar such as calculation of wuku, sasih and also pengalantaka that is in the Balinese Calendar. Not everyone understands how to look for dewasa ayu and piodalan that will occur in the village. Bendesa Adat Notes Based on Android are made to make people know about piodalan and dewasa ayu and holidays in Bali. This application consists of three main informations, there are ceremony day information, dewasa ayu information and also piodalan information that has been tried out to the public and from the results of the trial 32% of the community said they were very satisfied, 54% said they were satisfied and 14% said enough satisfied.
Penyajian Data Pelanggan pada Lima Area PT. Telekomunikasi Indonesia, Tbk. Kandatel Pekalongan Menggunakan Google Earth Muslim, Much Aziz; Pramesti, Atikah Ari
Scientific Journal of Informatics Vol 1, No 2 (2014): November 2014
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v1i2.4026

Abstract

Prosedur sistem penyajian data pelanggan di PT. Telekomunikasi Indonesia, Tbk. Kandatel Pekalongan khususnya bidang Divisi Business Services masih menggunakan cara manual, hanya menggunakan media Micorsoft Excel. Dalam hal ini peneliti ingin menerapkannya dalam bentuk aplikasi Google Earth untuk membuat penyajian data pelanggan, karena Google Earth dapat memetakan bumi dari superimposisi gambar yang dikumpulkan dari pemetaan satelit, fotografi udara dan globe GIS tiga dimensi sehingga akan menghasilkan data yang akurat. Penyajian data dengan menggunakan Google Earth dilakukan dengan memanfaatkan bahasa markup HTML. Dengan cara ini, Divisi Business Service akan menjadi lebih mudah ketika menyajikan data-data para pelanggan Telkom yang mencakup lima area yaitu Batang, Pekalongan, Pemalang, Tegal dan Brebes. 
Immutability of Distributed Hash Model on Blockchain Node Storage Rahardja, Untung; Hidayanto, Achmad Nizar; Lutfiani, Ninda; Febiani, Dyah Ayu; Aini, Qurotul
Scientific Journal of Informatics Vol 8, No 1 (2021): May 2021
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v8i1.29444

Abstract

Purpose: The blockchain system uses hash functions. Hash is used in the blockchain to mark each block of data. Hash function algorithms map a string that is usually hexadecimal of any size to a sequence of fixed-size bits. This journal will discuss the distributed hash model for immutable blockchain node storage. Methods: The methodology used in the preparation of this research is mind mapping and literature review, namely the collection of scientific journals, articles, and e-books. Result: Storage of nodes on the blockchain using a distributed hash model. The distributed hash model only stores a portion of the block data at each node, and the block data is taken as a resource. A hash connects each block with the previous on the blockchain, so the entire blockchain transaction cannot be changed or deleted. Novelty: For further research will expand the research topic regarding storage immutability on the blockchain so that it becomes more completed and detailed.
Application of Exponential Comparison Method and Simple Additive Weighting Method in Assessment of Agricultural Extension Performance Suranti, Dewi
Scientific Journal of Informatics Vol 5, No 2 (2018): November 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v5i2.16128

Abstract

In order to build qualified and reliable agricultural human resources, it is necessary for professional, creative, innovative and global oriented Agricultural Extension workers in the provision of productive, effective and efficient extension services. Agricultural Extension is directed to carry out advisory and consultation tasks for the main actors and business actors in developing their agribusiness business, so the adoption of appropriate technology can run well and in turn increase the empowerment of the main actors, productions, productivity, income and welfare of farmers and their families. The performance of agricultural extension workers can be seen in the aspects of preparation, implementation, evaluation and reporting, development of agricultural extension and agricultural extension profession profession. In addition, agricultural extension programs should be based on analysis of farmers' needs and reflect current target audience conditions. Applying Simple Additive Wighted and Exponential Comparison Method in appraisal of farmer extension performance at UPT BPP Sukaraja aims to know the performance of agricultural extension in conducting counseling at UPT BPP Sukaraja. This is due to the lack of extension workers in BP3K Sukaraja. The results of the resulting assessment in the form of work performance ranking of each extension worker. Based on the results of the calculation both methods show the same performance rankings. With this is expected to make it easy for UPT BPP sukaraja in carrying out routine performance appraisal performance of extension workers who had been a constraint in conducting appraisal performance extension. Agricultural extension workers can carry out their duties and responsibilities
Analisis Sistem Pendaftaran pada Web Forum Ilmiah Matematika Unnes 2014 Alamsyah, Alamsyah; Arus, Afrilian Ardi
Scientific Journal of Informatics Vol 1, No 1 (2014): May 2014
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v1i1.3645

Abstract

Penelitian ini bertujuan untuk menganalisis efektivitas dan efisiensi penerapan sistem pendaftaran pada Forum Ilmiah Matematika (FIM) Unnes 2014. Berdasarkan observasi yang dilakukan, penulis menemukan bahwa pendaftaran berbasis web lebih efektif karena mempermudah sistem pendaftaran, terutama di luar wilayah Semarang. Kelemahan dari sistem yang digunakan selama ini yaitu pendaftaran yang digunakan dinilai kurang efisien karena pendaftar dapat melakukan lebih dari satu kali input data dengan atribut yang sama. Oleh karena itu, dirancang sebuah sistem pendaftaran berbasis web berupa database yang hanya dapat memuat satu data dengan atribut seperti nama, NISN, asal sekolah dan lain-lain. 

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