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febi eka febriansyah, febi eka
University of Lampung

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Implementasi Pengamanan Text File Pada Hybrid Sistem Menggunakan Algoritma Vigenere dan Algoritma Adaptive Minimum Error Least Significant Bit Replacement (AMELSBR) Wamiliana, Wamiliana; Pujakusuma, Tryo Romadhoni; Febriansyah, Febi Eka; Sakethi, Dwi
Jurnal Komputasi Vol 6, No 2 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v6i2.1663

Abstract

The development of technology and the internet allows everyone to exchange data andinformation. Problems arise when the information is confidential, especially for a company,institution and also individuals who have important documents and data. Therefore, the securityof the data is a must. In this case cryptography plays a role of encrypting secret messages intothe form of unreadable messages and steganography that hides the irregular messages into theimage media, resulting in double security in the delivery of secret messages. In this research wedevelop a hybrid system using Vigenere and AMELSBR with cover media in the form of (.jpg)format as input (cover), file type (.png) as output (stegoimage) and data be inserted as a file withtext format. The conclusion of this research is that the hybrid system can be used to encrypt thesecret message and hide it into the cover media to make it more secure in data transmission.Therefore, the use of AMELSBR method is good used in steganography. Stegoimage canwithstand the process of manipulating the brightness and contrast with the image record musthave the dominant black color value (rgb (0,0,0)) or white (rgb (255,255,255)) and not manycolor variants, in other words the image can restore the file without experiencing excessivereduction of meaning after the manipulation of brightness and contrast is an image with binaryimage quality and grayscale image.
PENGEMBANGAN SISTEM INFORMASI JOB RECORD DAN PENILAIAN KINERJA KARYAWAN PADA PT. TRAKTOR NUSANTARA BANDAR LAMPUNG Hijriani, Astria; febriansyah, febi eka; rahmawati, fitriana
Jurnal Komputasi Vol 3, No 2 (2015)
Publisher : Jurnal Komputasi

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Abstract

Job Record is the reference of Worker Performance Appraisal process where maximum or not the performance worker on certain period will be determined. The Development of Job record and worker performance appraisal information system with apply XML web service as method to exchange information between one and the other domains. With Web Service into information system could be handle business process that is recruitment, job record, worker performance appraisal, and payroll system. The resulting of exchange the information that is information of  employees, overtime, and incentive. The implemented of this information system using  PHP  programming language and  MySQL database and web service method using XML programming language. The result of Black Box testing showed that this The development of Job record and worker  performance appraisal information system has been successfully created as the users need.
Optimasi Query pada sistem informasi pencatatan aktifitas perubahan data nilai mahasiswa prihatin, nilaliliana; sakethi, dwi; febriansyah, febi eka
Jurnal Komputasi Vol 4, No 2 (2016)
Publisher : Jurnal Komputasi

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Abstract

A large amount of data can affect the search process the data in a database. The greater the amount of data, then the data search process will take longer. In a process of value management, activity data changes the value of an activity that is often overlooked by managers value. This system is used to listing activites done by student grades manager. The recording process will make the amount of data increases and pencarianya time it will take substantial time. The prior research explained that relational operators combined with indexing strategy in sub query has a better performance compared to using the other methods. This research using indexing strategy and nested query for activity listing information system for student grades data changes. The process of system testing conducted several experiments such as comparing data using index and data that did not use the index (table scan) to several conditions, namely the data on the amount of 517, 980, 2369, and 4221. Nested query testing and regular query or query were tested directly using the same amount of data and applied on subjects data search. Indexing strategy that is applied to the big amount of data will generate faster execution time than a search without indexing strategy, in contrary to the small amount of data indexing strategy does not really affect the search process. The use of nested query in the subjects data search will be faster than the search time regular query or query directly.
APLIKASI PENCARIAN LETAK ATM BERBASIS ANDROID DENGAN GIS DI KOTA BANDAR LAMPUNG Erika, Orien Rindy; Kurniawan, Didik; Febriansyah, Febi Eka
Jurnal Komputasi Vol 4, No 1 (2016)
Publisher : Jurnal Komputasi

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Abstract

Smartphone is a primary need for everyone in the modern era. Various features and advantages are offered by smartphone to those who use it. Smartphone is also widely used to help people to support their activities and to accomplish their work. Within the development of technology, GIS (Geographic Information System) has come along to provide service of locating a position of something in particular or a place to go. It is also used to locate its user with the help of satellite signal.  GPS can provide precise and accurate information on the position, speed, direction, and time. In this study, the researcher designs and builds an Android- based search application called ATM Maps utilizing GPS technology. This application allows you to search the location of ATMs in the city of Bandar Lampung by the way, by the  ATM and by the city of Bandar Lampung.  In turn, users can avoid difficulty in finding the location of an ATM. This will be a great help particularly to those who do not reside in the city of Bandar Lampung. Furthermore, the application also displays the transfer code of each bank so as to assist users in making easier cash transfer. The application is developed utilizing parsing technique of XML Pull Parser. It compares the data stored in folder of Assets Project and that in the server. The conclusion of this study reveals that the ATM Maps is successfully constructed and proven to be useful for its users. It is indicated by excellent rating and comments of satisfaction on the Play Store. In this application, the data is stored in Project Assets folder in purpose of reaching easy and quick access. In the other hand, data updating for the applications can also be processed easily.Keywords: ATM Maps, Bank, GIS, Xml Pull Parser, parsing, assets, Play Store, Android, Smartphone, Bandar Lampung.
PENCARIAN DATA PADA SISTEM BANK DATA NILAI MAHASISWA JURUSAN ILMU KOMPUTER MENGGUNAKAN METODE BRUTE FORCE Cindona, Esti Puri; Sakethi, Dwi; Febriansyah, Febi Eka
Jurnal Komputasi Vol 4, No 2 (2016)
Publisher : Jurnal Komputasi

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Abstract

Data Bank System is a place that is used to store data. In Computer Science Department, Data Bank System that is used to store data of students’ score at Computer Science Department. The System of Students’ Data Bank Score at Computer Science Department is still in manual form. Therefore, the system of Students’ Data Bank score at Computer Science Department that is still in the manual system is developed to be digital system. In searching the system of students’ data bank Score at Computer Science Department in digital form by applying Brute Force algorithm. Brute Force algorithm is a string searching algoritm which is used each character checking method in pattern with every character in the text. Data searching in the System of Students’ Data Bank Score at Computer Science Department the testing was done with some case  tests that focused on functional system. Data searching in the System of Students’ Data Bank Score at Computer Science Department was using Brute Force Method by ten people that was randomly chosen. The questionnaire result of system testing was using Likert scale, with the result of final score was 83,33 or it could be stated that the System of Students’ Data Bank Score at Computer Science Department by using Brute Force method was “Very Good”.
NEWS PORTAL OF DAILY LAMPUNG NEWSPAPER BASED ON ANDROID saptomi, erland gili; Yusman, Machudor; Febriansyah, Febi Eka
Jurnal Komputasi Vol 4, No 1 (2016)
Publisher : Jurnal Komputasi

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Abstract

Technology developments have a positive impact in delivery of news or information to the public to be more easily and quickly without any distance limitation in access news. This is supported by the development of internet access which increase rapidly, so that everyone in the world can access or share information in real time (without any lag time). News Portal Of Daily Lampung Newspaper Based On Android is an application that provides convenience to the public in obtaining information or news. News Portal Based On Android provide news which taken from website lampungnewspaper.citm.co.id. Things become a study in this thesis is connecting between Android platform with website database platform using library Volley. News Portal is made using Android Studio and retrieve data from database website lampungnewspaper.citm.co.id with Waterfall method.
RANCANG BANGUN APLIKASI RADIO STREAMING DENGAN MENGGUNAKAN SHOUTCAST DISTRIBUTED NETWORK AUDIO SERVER (DNAS) Ayubi, Alauddin Al; Kurniawan, Didik; Febriansyah, Febi Eka
Jurnal Komputasi Vol 4, No 1 (2016)
Publisher : Jurnal Komputasi

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Abstract

Radio Streaming is use technology for sending an audio file simultaneously on multiple computers on a network by using a small data packets and generates output semi-real time. In the process of streaming, a music file will sound when the computer starts receiving the music file data. Shoutcast DNAS is a freeware that is used for streaming radio technology. Shoutcast help the user to provide an Internet Radio Private servers using software that has been provided. Winamp is a multimedia player device created by Nullsoft. The trial results of this study are the Application Streaming Radio can help the user to display the program content of radio, play and lay Radio Streaming and display e-mail addresses, website streaming and also Encoder used affects the occurrence of delay, the connection is unstable causing disconnection in automatic, processor speed and also the speed of the internet connection affects the buffering of streaming player or players. Keywords: Streaming Radio, Shoutcast DNAS, Winamp, Encoder.
Aplikasi Pencarian Informasi Sholat Jumat di Kota Bandar Lampung Menggunakan LBS Berbasis Android Muludi, Kurnia; Febriansyah, Febi Eka; Setiawan, Alfabet
Jurnal Komputasi Vol 4, No 2 (2016)
Publisher : Jurnal Komputasi

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Abstract

The utilization of GPS (Global Positioning System) technology on telecommunication tools stimulates Location Based Service (LBS) in smartphone.  This service provides an information that can be accessed through mobile network and is able to use geographic location. In this research, application is designed and created for giving the information about Friday prayer schedule in Bandar Lampung, including the information about mosques, preacher in charge in certain mosque, and shows the nearest mosque location within a radius of 1 km. The application consists of Android Mobile application for users and Web Based System for Administrator and both are connected with Web Service. This study shows that the new created application can give the information about Friday prayer in Bandar Lampung and the test result by using Black-Box equivalence partitioning shows that the application runs in accordance with the requirements.
IMPLEMENTASI ALGORITMA BUBBLE SORT DAN SELECTION SORT MENGGUNAKAN ARRAYLIST MULTIDIMENSI PADA PENGURUTAN DATA MULTI PRIORITAS Sitepu, Roma Rio; Yusman, Machudor; Febriansyah, Febi Eka
Jurnal Komputasi Vol 5, No 1 (2017)
Publisher : Jurnal Komputasi

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Abstract

Ordering is a process of sorting data with a certain rule, so it will be arranged regularly in accordance with the rules. Basically, there are two kinds of commonly used sequencing rules: ascending and descending. In sorting data that consists of many criteria, there will be priority criteria on which the data is sorted. Priority criteria are sorted by initial criteria which are the most preferred criteria until the last criterion which is an additional criterion. In this study, researchers developed an algorithm that can help sort data that has many priorities. The algorithm used is Bubble Sort and Selection Sort, developed using multidimensional ArrayList to sort multi-priority data. The test was conducted on five times experiment and the data sorted by descending. The data used consist of four fictitious data and one real data taken from the list of all criteria of PPA 2017 scholarship recipient of MIPA faculty, University of Lampung. From the results of the tests performed, the best solution is found in the Selection Sort algorithm if compared with the Bubble Sort algorithm for multi priotity data sorting.
PENGEMBANGAN SISTEM INFORMASI PENDAFTARAN BEASISWA PENINGKATAN PRESTASI AKADEMIK (PPA) JURUSAN ILMU KOMPUTER FAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN ALAM UNIVERSITAS LAMPUNG DENGAN MENERAPKAN ALGORITMA SORTING QUICK SORT DAN SELECTION SORT Sakethi, Dwi; Febriansyah, Febi Eka; Sari, Novita
Jurnal Komputasi Vol 3, No 2 (2015)
Publisher : Jurnal Komputasi

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Abstract

Information System of PPA Scholarship Registration at Department of Computer Science Faculty of Mathematic and Natural Science Universitas Lampung by applying Sorting Algorithm Quick Sort and Selection Sort is a system that is used to ease the processing of shcolarship data. A student who participates the selection of PPA scholarship registration at Department of Computer Science has to enter the registration data on this system, so that the Secretary of Department doesn’t need to enter the applicant’s scholarship registration data anymore. This system can also rank automatically by using two sorting methods Quick Sort and Selection Sort. This system is built by using PHP as the programming languange and MySQL. Based on running time sort and complexity of its algorithm, it’s proved that Quick Sort Method is faster that Selection Sort Method. The result of functional testing data shows that the system can function in accordance with the requirement analysis. Based on non-fuctional testing data, it shows that at admin level of this system is include in category of “Good” with the average value of 4.20 and user (student) level of this system is include in category of “Good” with the average value of 3.97.