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INDONESIA
Telematika : Jurnal Informatika dan Teknologi Informasi
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
ISSN : 1829667X     EISSN : 24609021     DOI : 10.31315
Core Subject : Engineering,
Electrical & Electronics Engineering
Arjuna Subject : -
Articles 361 Documents
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APLIKASI KEAMANAN PESAN MENGGUNAKAN ALGORITMA STEGANOGRAFI DAN KRIPTOGRAFI Wawan Setiawan; Juwairiah Juwairiah; Herry Sofyan
Telematika Vol 8, No 2 (2012): Edisi Januari 2012
Publisher : Jurusan Teknik Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/telematika.v8i2.462

Abstract

 Steganography is a technique of hiding a secret or confidential information in another message so that other people are not aware of the existence of a hidden message. In order for hidden messages or information that it's safer to use the science of cryptography for data encryption. So that the data or messages can not be understood by an unauthorized person who managed to access the data. This application uses methodologies Rappid Guidelines for Application Engineering (Grapple), which consists of Requirement gathering, Analysis, Designs, Development, and Deployment. This application was built using the Java programming language with tools NetBeans IDE 7.0. The algorithm used in this application is the steganography algorithms Least Significant Bit and cryptographic algorithms Vigenere Cipher. The final results of this study is an application of steganography in images by using the method of least significant bit (LSB) and vigenere that can be run on a computer. The image can be used in this application is the image format JPG, PNG, GIF, and BMP. This application can insert text in the image and can perform encryption and decryption at the message you want to insert.
IMPLEMENTASI ZACHMAN FRAMEWORK UNTUK PEMODELAN DAN PERANCANGAN SISTEM E-COMMERCE PADA SEKTOR PERDAGANGAN IKM Siti Eka Chotimah; Sri Handayaningsih
Telematika Vol 13, No 1 (2016): Edisi Januari 2016
Publisher : Jurusan Teknik Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/telematika.v13i1.1713

Abstract

Trade area is an area that is in Disperindagkop DIY. In performing the task in terms of facilitating, coaching and supervision of trading activities are still experiencing difficulties in getting data such as turnover and the products produced and sold by the merchant SMEs, the number of traders SMEs. Office http://jogjaplaza.com already have a website, which is used specifically to market the products of SMEs has not reached to the industry. Based on this problem, it needs to make a model and system design appropriate e-commerce in the hope can be used as a reference when establishing the e-commerce.Tahapan used in the modeling and design of e-commerce systems Disperindagkop domestic trade field include: ( 1) data collection with library research techniques, interviews and observation. (2) analysis of current conditions and expected (3) Analysis of Gap and (4) development of modeling and designing systems with methods Zachman framework and models of linear sequential process. (5) The test document using analytical testing and usability testing. The research resulted in a model and e-commerce system design that can be used as a reference in the development of e-commerce system based on the results of testing with a test value for 100% testing analysis and for testing usability testing to the respondent purchaser merchant value IKM value 3.3
PERAMALAN JUMLAH MAHASISWA MENGGUNAKAN MOVING AVERAGE Hari Prapcoyo
Telematika Vol 15, No 1 (2018): Edisi April 2018
Publisher : Jurusan Teknik Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/telematika.v15i1.3069

Abstract

AbstractThe Process of using resources in higher education is influenced by the up and down of the number students. The purpose of this study is to predict the number of students who study in the department of informatics engineering UPN Veteran Yogyakarta for the next periods. This research, data is taken from forlap dikti for Informatics Engineering fom 2009 until 2016 at UPN Veteran Yogyakarta. The method that used to forecast the number of students is a Moving Average method consisting of: Single Moving Average (SMA), Weighted Moving Average (WMA) and Exponential Moving Average (EMA). This study will use the forecasting accuracy namely Mean Square Error (MSE), Mean Absolute Error (MAE) and Mean Absolute Percentage Error (MAPE) to select the best model to be used for forecasting. The best model that used for forecasting is Weighted Moving Average (WMA) with weighted 1/3 and average length (n) used for 2. The smallest value for MSE of 5807.96; the smallest MAE value of 55.89 and the smallest value for MAPE of 5.24%. Forecasting of the number of students for four semesters in the future after the even semester of 2016 are respectively: 902; 901,33; 901,56 and 901,48. Keywords : Forecasting, UPN Veteran Yogyakarta, Single moving average(SMA) AbstrakProses penggunaan sumber daya perguruan tinggi setiap tahun dipengaruhi oleh naik turunnya jumlah mahasiswa. Tujuan dari penelitian ini adalah untuk memprediksi jumlah mahasiswa yang kuliah di jurusan teknik informatika UPN Veteran Yogyakarta untuk periode yang akan datang. Data penelitian ini diambil dari forlap dikti untuk Teknik Informatika dari tahun 2009 sampai 2016 UPN Veteran Yogyakarta. Metode yang digunakan untuk melakukan peramalan jumlah mahasiswa adalah metode Moving Average yang tediri dari : Single Moving Average (SMA), Weighted Moving Average (WMA) dan Exponential Moving Average (EMA). Penelitian ini akan menggunkan akurasi peramalan Mean Square Error (MSE), Mean Absolute Error (MAE) dan Mean Absolute Percentage Error (MAPE) untuk memilih model terbaik yang akan digunakan untuk peramalan. Model terbaik yang digunakan untuk peramalan yaitu Weighted Moving Average (WMA) dengan pembobot 1/3 dan panjang rata-rata (n) yang dipakai sebesar 2. Nilai terkecil untuk MSE sebesar 5807,96; nilai terkecil MAE sebesar 55,89 dan nilai terkecil untuk MAPE sebesar 5,24 %. Peramalan untuk jumlah mahasiswa empat semester kedepan setelah semester genap 2016 masing-masing adalah : 902; 901,33; 901,56 dan 901,48. Kata Kunci : Peramalan, UPN Veteran Yogyakarta, Single Moving Average(SMA).
ONTOLOGY SEBAGAI SOLUSI PENCARIAN MAKNA AMBIGU DALAM DALAM SISTEM YANG HETEROGEN Herlina Jayadianti; Lukito Edi Nugroho; Paulus Insap Sanntosa; Wahyu Widayat; Carlos Sousa Pinto
Telematika Vol 10, No 1 (2013): Juli 2013
Publisher : Jurusan Teknik Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/telematika.v10i1.386

Abstract

Human beings as creatures of God has tremendous advantages in terms of process knowledge . Knowledge , ideas , predictions , and beliefs intertwined managed to produce a greater range of knowledge in the human brain . With its experience a human can easily distinguish them said the same but have different meanings , or otherwise different words but the same meaning . Of all the advantages it has, on one hand, humans also have various limitations in managing large amounts of data , the limitations of doing a quick search , to the limitations in considering complex data . This is the basis of this study . The research in this paper will focus on an ambiguous word search prototype system , where the system is expected later to understand user queries performed more easily . SPARQL , RDF and ontology is the technology that will be used to support the course of this study .
APLIKASI PEMILIHAN OPERATOR SUMUR PRODUKSI MENGGUNAKAN FUZZY AHP DAN FUZZY TOPSIS DI PT. GEOTAMA ENERGI Rifki Indra Perwira
Telematika Vol 12, No 1 (2015): Edisi Januari 2015
Publisher : Jurusan Teknik Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/telematika.v12i1.522

Abstract

Dalam penentuan karyawan operator sumur produksi pada suatu sumur minyak terdapat beberapa faktor yang menjadi penilaian.Penilaian ini berdasarkan penilaian kinerja, yakni pengetahuan tentang Peralatan Kerja,    HSE Awareness,    Production System,     Production Lifting Method,     Operasi Perawatan Sumur dan  Operasi Tekanan Dasar Sumur. Demi efisiensi dan efektifitas kerja maka pengambilan keputusan yang tepat sangat diperlukan. Makalah ini bertujuan untuk membangun sebuah sistem pendukung keputusan yang mempunyai kemampuan analisa pemilihan karyawan berprestasi dengan menggunakan metode Fuzzy Analytic Hierarchy Process (AHP), dimana masing-masing kriteria dalam hal ini faktor- faktor penilaian dan alternatif dalam hal ini para karyawan dibandingkan satu dengan yang lainnya sehingga memberikan output nilai intensitas prioritas yang menghasilkan suatu sistem yang memberikan penilaian terhadap setiap karyawan. Sistem pendukung keputusan ini membantu melakukan penilaian setiap karyawan, melakukan perubahan kriteria,dan perubahan nilai bobot. Hal ini berguna untuk memudahkan pengambil keputusan yang terkait dengan masalah pemilihan karyawan berprestasi, sehingga akan di dapatkan karyawan yang paling layak ditempatkan menjadi Operator Sumur Produksi.
PEMETAAN DATA RECHARGE AIR TANAH DI KABUPATEN SLEMAN BERDASARKAN DATA CURAH HUJAN Bambang Yuwono; Awang Hendrianto Pratomo; Heru Cahya Rustamaji; Puji Pratiknyo; Mochammad Assofa Indera Jati
Telematika Vol 13, No 2 (2016): Edisi Juli 2016
Publisher : Jurusan Teknik Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/telematika.v13i2.1725

Abstract

Water is a basic need for humans and other living things. Various sources of water on this earth has formed a system of close interaction with the components of living things in it. Over the years, water resources have changed in terms of both quality and quantity. This can be due to population growth in addition to the natural changes in nature. The more narrow field of water absorption followed by high water consumption causes the supply of ground water reserves can be threatened. So, we need a mapping and ground water recharge calculations to assist in the monitoring of groundwater reserves.The method used in this research is the Water Balance (keseimbangan air)method. This method is based on any incoming rain water will be equal to the output evapotranspiration and runoff hereinafter this method is applied in the application. Factors affecting groundwater recharge the water balance method is precipitation, evapotranspiration and run off. Information og groundwater recharge is also displayed on the map using Google Map function are related to the database system to produce informative mapsCalculation of groundwater recharge is applied to the daily rainfall data input into the application which then included in the water balance equation method so it can be easy to determine the value of groundwater recharge. Groundwater recharge information can be displayed in the form of mapping, making them easier to understand visually.Based on testing, the highest recharge results of this research on the Kemput station is 1119,5 mm/year with rainfall of 2750 mm/year. Seyegan and Bronggang station is 1026,25 mm/year with rainfall of 2625 mm/year. Angin-angin and Prumpung station is 933 mm/year with rainfall of 2500 mm/year. Beran and Gemawang station is 839.5 mm/year with rainfall of 2375 mm/year. Plataran station is 808.42 mm/year with rainfall of 2333 mm/year. Godean station is 699.5 mm/year with rainfall of 2187 mm/year and the lowest at Tirto Tanjungand Santan stastion 560 mm / year with rainfall of 2000 mm / year.
PENERAPAN METODE MULTI ATTRIBUTE UTILITY THEORY (MAUT) DALAM PEMETAAN TINGKAT DAMPAK BENCANA BANJIR DI KABUPATEN BANTUL Afif Irfan Abdurrahman; Bambang Yuwono; Yuli Fauziah
Telematika Vol 17, No 1 (2020): Edisi April 2020
Publisher : Jurusan Teknik Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/telematika.v17i1.3402

Abstract

Flood disaster is a dangerous disaster, an event that occurs due to overflow of water resulting in submerged land is called a flood disaster. Almost every year Bantul Regency is affected by floods due to high rainfall. The flood disaster that struck in Bantul Regency made the Bantul District Disaster Management Agency (BPBD) difficult to handle so that it needed a mapping of the level of the impact of the flood disaster to minimize the occurrence of floods and provide information to the public.This study will create a system to map the level of impact of floods in Bantul Regency with a decision support method namely Multi Attribute Utility Theory (MAUT). The MAUT method stage in determining the level of impact of flood disasters through the process of normalization and matrix multiplication. The method helps in determining the areas affected by floods, by managing the Indonesian Disaster Information Data (DIBI). The data managed is data on criteria for the death toll, lost victims, damage to houses, damage to public facilities, and damage to roads. Each criteria data has a value that can be used to determine the level of impact of a flood disaster. The stages for determining the level of impact of a disaster require a weighting calculation process. The results of the weighting process display the scoring value which has a value of 1 = low, 2 = moderate, 3 = high. To assist in determining the affected areas using the matrix normalization and multiplication process the process is the application of the Multi Attribute Utility Theory (MAUT) method.This study resulted in a mapping of the level of impact displayed on google maps. The map view shows the affected area points and the level of impact of the flood disaster in Bantul Regency. The mapping produced from the DIBI data in 2017 produced the highest affected area in the Imogiri sub-district. The results of testing the data can be concluded that the results of this study have an accuracy rate of 95% when compared with the results of the mapping previously carried out by BPBD Bantul Regency. The difference in the level of accuracy is because the criteria data used are not the same as the criteria data used by BPBD in Bantul Regency so that the accuracy rate is 95%.
APLIKASI SISTEM PENGELOLAAN ATK (ALAT TULIS KANTOR) AKADEMI ANGKATAN UDARA YOGYAKARTA Deny Wiria Nugraha; Imat Rahmat Hidayat
Telematika Vol 7, No 2 (2011): Edisi Januari 2011
Publisher : Jurusan Teknik Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/telematika.v7i2.419

Abstract

Information Systems is an essential requirement for every company or government agency. Included in the Air Force Academy in Yogyakarta, information systems becomes an important component in the system run. Among them is the Stationery Office Management System that has a very high complexity.ATK management system requirements in the Air Force Academy Yogyakarta is needed. Because the extent of management systems that run. So management needs ATK becomes very important. Due to a very large nominal amount if calculated in the long term in accordance with the procurement conducted. This is to reduce errors in the recording which was done manually. Development method makes the system using the waterfall is running ssuai sisem needs. So the rate of change and improvement that occurred in the system will run continuously.
PENENTUAN JUMLAH UKURAN PAKAIAN OPTIMAL SEBAGAI RANCANGAN SISTEM UKURAN PAKAIAN ANAK LAKI-LAKI DI INDONESIA DENGAN ANALISIS KESEIMBANGAN DAN FUZZY C MEANS BERBASIS ARTIFICIAL BEE COLONY Novenda Kartika Putrianto
Telematika Vol 14, No 2 (2017): Edisi Oktober 2017
Publisher : Jurusan Teknik Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/telematika.v14i2.2099

Abstract

Jumlah ukuran adalah salah satu hal terpenting dalam merancang sistem ukuran pakaian. Semakin banyak jumlah ukuran pakaian maka akan semakin pas dengan bentuk tubuh konsumen sehingga kepuasan konsumen dapat tercapai dari sisi ketepatan ukuran pakaian dengan ukuran tubuh. Namun dari sisi produsen, semakin besar jumlah ukuran pakaian akan berdampak pada biaya setup ataupun penambahan lini produksi akibat penambahan variasi jumlah ukuran pakaian. Penelitian ini akan mengembangkan sistem ukuran pakaian baru dimana akan melihat titik titik seimbang antara biaya produksi dengan jumlah ukuran maksimal. Titik seimbang itu adalah jumlah ukuran optimal yang dapat memenuhi kebutuhan konsumen dan produsen secara bersama-sama. Metode FCM ABC akan digunakan untuk mengelompokkan ukuran tubuh menjadi beberapa kelompok. Sampel menggunakan 106 anak laki-laki umur 8-10 tahun. Penelitian terdiri dari tahapan yaitu Analisis faktor, Penentuan jumlah kelompok optimal, dan Evaluasi. Tujuh kelompok ukuran pakaian yang optimal dihasilkan. Nilai aggregate loss memenuhi syarat validasi sehingga dapat dikatakan pengembangan sistem ukuran baru dapat digunakan sebagai teknik untuk mendapatkan jumlah ukuran pakaian yang optimal.
Aplikasi Iklan Baris Online menggunakan Arsitektur REST Web Service Yuli Fauziah
Telematika Vol 9, No 2 (2013): Edisi Januari 2013
Publisher : Jurusan Teknik Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/telematika.v9i2.286

Abstract

An organization requires an integration if composed of members who live in differentplaces. Organization requires the automation of business processes by exchanging businessdocuments from applications and system platforms are different, both inside or outside the areaof the organization. In this study, an application will be prepared by applying web servicetechnology utilizing REST Web Service Arsitecture, where the server and client can interact witha unified interface, server and client will menghost resource to consume resources provided bythe server. Research is organized so that the business processes that occur when a consumer(client) do a query or search items, integrated with web applications. Server provides a clientAPI which is then utilized. Client in this application is a web application. After receiving datafrom the client, the server and then disseminate the information needs of the goods in questionto all members.Keywords : Web Services, REST, Arsitecture, Client, Server

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