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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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SOFTWARE DEFINED NETWORKS: A COMPARATIVE STUDY AND QUALITY OF SERVICES EVALUATION Nugroho, Herry Prasetyo; Irfan, Muhammad; Faruq, Amrul
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.v6i2.20585

Abstract

Software-Defined Network (SDN) as architecture network that separates the control and forwarding functions, so that network operators and administrators can configure the networks in a simple and centrally between thousands of devices. This study is designed and evaluate the Quality of Services (QoS) performances between the two networks employed SDN-based architecture and without SDN-based. MinNet as a software emulator used as a data plane in the network Software Define Network. In this study, comparison of the value of the QoS on the network based on Software Defined Network and traditional network during the test run from the source node is investigated. Network testing by using traffic loads. Traffic loads are used starting from 20Mbps-100Mbps. The result is verified that the QoS analysis of the Software-Defined Network architecture performed better than conventional network architectures. The value of the latency delay on the Software Define Network range between 0,019-0,084ms, and with 0% packet loss when addressed the network traffics of 10-100Mbps.
INTELLIGENT WEB APPLICATIONS AS FUTURE GENERATION OF WEB APPLICATIONS Wakil, Karzan; N.A.Jawawi, Dayang
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.v6i2.19297

Abstract

During the recent years World Wide Web very fast increased a fundamental part in our everyday life. In commerce, personal relationship, the effect of the universal network has wholly changed the way people interact with each other and with machines. The problem is after rising the Artificial Intelligence to presenting human feelings, everything changed including web applications. In this paper, we describe the intelligent web applications as present and future of web applications, moreover we highlight the special features and their roles in increasing intelligence of web applications as well as impact this application in the process development web systems. The goals of this paper led to developers to create smart and modern web applications.
DECISION SUPPORT SYSTEM FOR "BULELENG CERDAS" PROGRAM SOCIAL FUND RECIPIENT CANDIDATES WITH ANALYTICAL HIERARCHY PROCESS (AHP) AND SIMPLE ADDITIVE WEIGHTING (SAW) METHOD Fitri, Aini Aidilah; Pradnyana, I Made Ardwi; Darmawiguna, I Gede Mahendra
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.v5i2.16457

Abstract

BAZNAS in Buleleng Regency has a problem program "Buleleng Cerdas". The problems are to make a decision to choose prospective scholarship recipients. The program activities include Student Assistance, One Family One Scholar, and Student Assistance with Achievement. The problems that arise because the selection of the prospective recipients are still manual and the assessment of the final results obtained is relatively long, still difficult to identify prospective recipients who are eligible in accordance with the existing quota, because the candidates Scholarship recipients are spread in the Buleleng region for private and public schools. The purpose of this research is to develop a Decision Support System for "Buleleng Cerdas" Program Social fund Recipient Candidates with AHP and SAW Method and to know the responsiveness of users. This system is supported by a method of decision making, namely the AHP method which is used to find the weights in each criterion, and the ranking calculation with the SAW method. For the testing process, four test process stages are performed: (1) black box test, (2) white box test  (3) test UEQ percentage is positive impression & SUS percentage is 93%, (4) suitability testing of manual calculations on the system is appropriate.
APLIKASI MATRIX LABOLATORY UNTUK PERHITUNGAN SISTEM ANTRIAN DENGAN SERVER TUNGGAL DAN MAJEMUK Anam, Nafiul; Hendikawati, Putriaji
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.v1i1.3642

Abstract

Penelitian ini mengembangkan program aplikasi komputer dengan Matrix Labolatory (Matlab) sebagai alat bantu untuk menghitung aplikasi teori antrian. Program aplikasi yang dirancang dapat digunakan untuk menghitung berbagai komponen antrian seperti laju kedatangan dan pelayanan serta distribusinya, probabilitas pelayan menganggur, jumlah pelanggan serta waktu tunggu dalam antrian. Berdasarkan analisis dan perancangan program, perhitungan antrian yang dilakukan memiliki ketepatan hasil yang sama terhadap perhitungan secara teoretis dan mampu meningkatkan efisiensi waktu dalam perhitungan aplikasi sistem antrian. Program yang dibuat pada penelitian ini hanya terbatas untuk menghitung model antrian server tunggal dan majemuk dengan laju kedatangan berdistribusi poisson dan laju pelayanan berdistribusi eksponensial, untuk itu perlu pengembangan program lebih lanjut untuk model antrian dengan laju kedatangan dan pelayanan yang tidak memenuhi asumsi distribusi poisson dan eksponensial.
IMPLEMENTATION OF EVOLUTION STRATEGIES (ES) ALGORITHM TO OPTIMIZATION LOVEBIRD FEED COMPOSITION Rizki, Agung Mustika; Mahmudy, Wayan Firdaus; Yuliastuti, Gusti Eka
Scientific Journal of Informatics Vol 4, No 1 (2017): May 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v4i1.9003

Abstract

Lovebird current society, especially popular among bird lovers. Some people began to try to develop the cultivation of these birds. In the cultivation process to consider the composition of feed to produce a quality bird. Determining the feed is not easy because it must consider the cost and need for vitamin Lovebird. This problem can be solved by the algorithm Evolution Strategies (ES). Based on test results obtained optimal fitness value of 0.3125 using a population size of 100 and optimal fitness value of 0.3267 in the generation of 1400.
ALAT UKUR PARAMETER TANAH DAN LINGKUNGAN BERBASIS SMARTPHONE ANDROID Mulyana, Agus; Sofyan, Syam
Scientific Journal of Informatics Vol 2, No 2 (2015): November 2015
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v2i2.5085

Abstract

Jenis tanah dalam suatu wilayah dapat berbeda jenis tergantung dari kontur dan letak wilayah. Sebagai contoh, pemilihan jenis tanah yang tepat dapat menentukan tingkat keberhasilan bercocok tanam. Faktor yang dapat menjadi parameter keberhasilan diantaranya suhu lingkungan, kelembaban lingkungan, kandungan air dalam tanah, ketinggian lahan, kemiringan kontur tanah, serta lokasi lahan. Saat ini belum terdapat alat ukur terintegrasi yang dapat mengetahui parameter-parameter yang diperlukan seperti suhu, kelembaban, kandungan air dalam tanah, kemiringan lahan, ketinggian lahan, serta luas dan keliling lahan. Dengan pemilihan lahan yang tepat guna, akan meminimalisir akibat dari penyalahgunaan lahan seperti bencana alam dan kerusakan lingkungan. Alat ukur ini dapat menampilkan hasil pengukuran luas, keliling, suhu, kelembaban, kelembaban tanah, dan lokasi dari lahan. Smartphone Android menjadi bagian utama dalam alat ini sebagai pengukur luas dan keliling berdasarkan data latitude dan longitude yang bersumber dari sensor Global Positioning System (GPS) Smartphone menggunakan metode Haversine. Sensor suhu dan kelembaban yang digunakan adalah DHT-22 serta sensor Soil Moisture. Kedua sensor tersebut dibaca oleh mikrokontroler Arduino Nano.
COMPARISON OF PATTERNS SHAPES AND PATTERNS TEXTURE FOR IDENTIFICATION OF MALARIA PARASITES IN MICROSCOPIC IMAGE Kusanti, Jani; Santosa, Yusuf Zain
Scientific Journal of Informatics Vol 3, No 2 (2016): November 2016
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v3i2.7917

Abstract

Identification of malaria parasites in red blood cells has been done, with the aim of as tools to identify experts microscopic parasites more quickly. This study aimed to compare the level of accuracy in the results to identify and classify parasites based on the pattern shape and texture patterns. The comparison is based on the characteristics of the pattern used, the steps being taken in this study is the image quality improvement process, the process of segmentation with Otsu method, feature extraction process on the image data to be tested. The process of pattern recognition and pattern shapes texture. The last step is to test the identification and classification of plasmodium falciparum parasite into 12 classes using methods Learning Vector Quantization (LVQ). The results of this study indicate that the pattern forms can provide a higher level of accuracy compared to LVQ texture pattern. LVQ with input shape pattern successfully identified 91% of image data correctly and input texture successfully identified 48% of image data properly.
ANALISIS HUBUNGAN PROSES PEMBELAJARAN DENGAN KEPUASAN MAHASISWA MENGGUNAKAN LOGIKA FUZZY Widaningrum, Ida
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.v2i1.4532

Abstract

Proses belajar mengajar dalam suatu perkuliahan merupakan kegiatan rutin yang dilakukan oleh dosen dalam melaksanakan salah satu tridharmanya yaitu pengajaran. Hal ini memerlukan interaksi aktif dari kedua belah pihak yaitu dosen dan mahasiswa, sehingga pada akhirnya mahasiswa akan dapat mengerti apa yang disampaikan dan membuka wawasan tentang materi tersebut. Analisis hubungan proses pembelajaran dengan kepuasan mahasiswa bertujuan untuk menentukan seberapa besar faktor-faktor penilaian mahasiswa tentang proses pembelajaran diantaranya tentang mengerti tidaknya materi yang disampaikan, kesesuai target, implementasi, peningkatan wawasan dan keahlian, proses interaksi, tanya jawab atau diskusi, efektivitas waktu perkuliahan, motivasi untuk meningkatkan ilmu/pemahaman, dan nilai yang diperoleh untuk mata kuliah tersebut terhadap kepuasan mahasiswa menggunakan logika fuzzy. Logika fuzzy digunakan karena memiliki keunikan dalam hal kemampuannya mengolah data yang bersifat linguistik. Tidak seperti metode logika klasik yang memerlukan pemahaman mendalam tentang sistem, persamaan matematis dan ketepatan nilai numeris, logika fuzzy menggabungkan berbagai macam cara berfikir yang memungkinkan pemodelan system kompleks berdasarkan pengetahuan dan pengalaman manusia. Logika fuzzy memberikan cara sederhana untuk menentukan suatu kesimpulan dari informasi yang tidak jelas, ambigu (bermakna ganda) dan tidak tepat (presisi). Kinerja fuzzy menyerupai cara manusia membuat keputusan berdasarkan pendekatan data yang diketahui kemudian menentukan solusinya.
DECISION SUPPORT SYSTEMS WITH AHP AND SAW METHOD FOR DETERMINATION OF CATTLE WITH SUPERIOR SEEDS Josaputri, Clarissa Amanda; Sugiharti, Endang; Arifudin, Riza
Scientific Journal of Informatics Vol 3, No 2 (2016): November 2016
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v3i2.7908

Abstract

Department of Animal Husbandry and Fisheries of Semarang District is an institution in charge of livestock and animal health. Basically the Animal Husbandry Department has provided standardization for quality livestock cattle with superior seeds that usually can be judged or measured by various criteria.They are weight, age and value of BCS (Body Condition Score).They needed a system that could help the Department of Livestock and Fisheries of Semarang District in determining the electoral process cattle with superior seeds. In this research, the manufacture of Decision Support Systems in the determination cattle with superior seedsis using a combination of two methods is Analytical Hierarchy Process (AHP) and the Simple Addictive Weighting (SAW). In AHP will perform an importance value calculation criteria that will be paired up with an alternative to the SAW the next process is the sum of the weight from performance rating of all the attributes to each alternative, a ranking conducted to determine the result of cattle with superior seeds. Suggestions on this system, can be developed further by combining other methods to determine the recommendation that more effective.
PENERAPAN ALGORITMA GREEDY PADA MESIN PENJUAL OTOMATIS (VENDING MACHINE) -, Alamsyah; Putri, Indriani Tiara
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.v1i2.4608

Abstract

Dalam memasarkan produk minuman dan makanan ringan, Indonesia masih banyak menggunakan tenaga manusia untuk menyalurkan produk tersebut dari pabrik sampai ke konsumen akhir. Jika setiap toko membeli produk dalam jumlah banyak, maka didapatkan keuntungan yang besar dalam penjualan produk tersebut. Hal ini menyebabkan harga penjualan produk yang sampai ke konsumen akhir lebih mahal daripada harga asli yang diberikan oleh pabrik. Dengan permasalahan tersebut, penulis mencoba membuat aplikasi mesin penjual otomatis (vending machine). Pada umumnya vending machine tidak memberikan uang kembalian. Disini penulis mencoba membuat vending machine dengan menerapkan algoritma Greedy agar dapat memberikan uang kembalian sehingga harga penjualan produk sesuai dengan harga asli pabrik. Algoritma Greedy diterapkan untuk menentukan pecahan berapa saja yang muncul dalam proses pengembalian uang dengan meminimalkan jumlah uang logamnya. Penulis menggunakan aplikasi Visual Basic untuk menerapkan program vending machine.

Page 20 of 57 | Total Record : 564

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