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All Journal Ilmu dan Budaya Jurnal Teknologi dan Manajemen Informatika TELKOMNIKA (Telecommunication Computing Electronics and Control) SISFOTENIKA Journal of Information Technology and Computer Science (JOINTECS) JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI INTECOMS: Journal of Information Technology and Computer Science JurTI (JURNAL TEKNOLOGI INFORMASI) Jurnal Riset Informatika Jurnal Teknologi Dirgantara JIPI (Jurnal Ilmiah Penelitian dan Pembelajaran Informatika) Jurnal Mantik JTIM : Jurnal Teknologi Informasi dan Multimedia Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi) JISA (Jurnal Informatika dan Sains) Jurnal Teknik Informatika C.I.T. Medicom Jurnal Ipteks Terapan : research of applied science and education

Iskandar Fitri

Universitas Nasional

Author-ID : 2452731

Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Veterinary Other

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Articles

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Comparison of the feature selection algorithm in educational data mining Agung Triayudi; Iskandar Fitri
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 19, No 6: December 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v19i6.21594

Student academic accomplishment is the foremost focus of every educational institution. In developing student achievement in educational institutions, the researchers finally created a new research area, namely educational data mining (EDM). How the Feature Selection algorithm works is by removing unrelated data from educational datasets; therefore, this algorithm can improve the classification performance managed in EDM techniques. This research presents an analysis of the performance of the Feature Selection (FS) algorithm from the student dataset. The results received from other FS algorithms and classifiers will help other researchers to gain some best combination regarding Feature Selection algorithms and the classification. Selecting features that are relevant for student forecast models is a sensitive problem to stakeholders in education because they must make decisions based on the results of the prediction models. For the future, our paper seeks to play a decisive part while developing quality concerning education, as well as guiding different researchers in conducting educational interventions.

A new agglomerative hierarchical clustering to model student activity in online learning Agung Triayudi; Iskandar Fitri
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 3: June 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i3.9425

In this paper, a new technique of agglomerative hierarchical clustering (AHC), which is known as SLG (single linkage dissimilarity increment distribution, global cumulative score standard), can work well in analyzing students' activity in online learning as evidenced by obtaining the highest score in testing the validity index of cophenetic correlation coefficient (CPCC) ie 0.9237, 0.9015, 0.9967, 0.8853, 0.9875 of the five datasets compared with conventional agglomerative hierarchical clustering methods.

Implementasi Load Balancing Web Server Menggunakan Apache di Ubuntu 16.04. Kresno Wibowo; Iskandar Fitri; Deny Hidayatullah
SISFOTENIKA Vol 10, No 1 (2020): SISFOTENIKA
Publisher : STMIK PONTIANAK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30700/jst.v10i1.773

When many users access a website at the same time. So when it can make the web server to accommodate excessive loads because it can no longer accommodate the number of requests received. And that usually happens when a single web server or single. However, using the Round Robin load balancing method and also Haproxy as a load balancer can help regulate load sharing on each server. With testing done on 250 users, 500 users, 750 users, up to 1000 users and using a static web. So you can see the CPU usage that is used by the user load that is tested at the time after performing. The results of testing using haproxy run better than a single server and two servers. By using Apache benchmark in calculating Throughput and Time per request between a single server, two servers and running all servers using Haproxy. For testing the presentation on the CPU that is used on 250 users is 31.9% the lowest but there is an increase in testing 1000 users, reaching 54.5%. The test results on two servers in testing 250 users, 500 users, 750 users, and 1000 users produced 62.5% -68.7% results. And by testing on a single server RAM usage in testing 250 users, 500 users, 750 users, and 1000 users which reached about 91% -96%. With better test results using haproxy load balancing than using a single server or two servers. Because the use of a single server and two servers almost reached overload. Which means the time needed to handle the load is load balancing using haproxy better than a single server to more quickly handle requests, time per second and CPU usage.

Implementasi Encapsulation Jaringan Redudansi VLAN Menggunakan Metode Hot Standby Router Protocol (HSRP) Hendy Dwi Haryoyudhanto; Iskandar Fitri; Andri Aningsih
JOINTECS (Journal of Information Technology and Computer Science) Vol 5, No 1 (2020)
Publisher : Universitas Widyagama Malang

Local Area Network is currently often used to minimize a public work, different network segmentation in a building requires attention in designing a network that has dense traffic and often occurs down and vails over on a network flow, certainly requires performance optimal and efficient network, by way of network encapsulation with one channel and dividing each network segmentation by VLAN. The purpose of this paper is to apply a design by optimizing a network using the network redundancy method to create a more optimal network. This redundancy method is a method that moves a network path when downtime occurs on one of the routers that are automatically changed to an active router and a standby router. In the implementation of the design using GNS3 software to create network topology and design. With the results of tests that have been carried out using the simulator, packet loss from using the HSRP method is at VLAN10 0.11%, VLAN20 0.13%, VLAN30 0.30%, VLAN40 0.13%, VLAN50 0.22% AND VLAN60 0.16%. So the purpose of research makes a network more optimal and flexible

KEDAULATAN ENERGI NASIONAL: PENGUATAN PERAN NEGARA BERDAULAT & PEMBERDAYAAN SUMBER DAYA INSANI Ucuk Darusalam; Iskandar Fitri
Jurnal Ilmu dan Budaya Vol 40, No 54 (2016): Vol. 40, No 54 (2016)
Publisher : Universitas Nasional

There has been lacking of sovereignty of energy in Indonesia as a logical consequence of the state’s ineffectiveness to uphold the mandate promulgated by the 1945 Constitution. The country has been trapped in global capitalism resulting in the weakening position of Indonesia, and eventually weakening political economic and technological power of both state and the society. It brings with it negative impacts on empowerment of human resources that should otherwise develop expertise in coping with the current development of science and technology. The inflow of foreign investment has not made the state strong enough to pave the way for self help to assure welfare of the vast people. This paper is an account of assessing this issue of weak state of Indonesia to enable stronger position in sovereignty of energy and the assurance of human resources development in science and technology.

Implementasi Load Balancing Pada Web Server Menggunakan Nginx Fahmi Apriliansyah; Iskandar Fitri; Agus Iskandar
Jurnal Teknologi dan Manajemen Informatika Vol 6, No 1 (2020): Juni 2020
Publisher : Universitas Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jtmi.v6i1.3792

Kebutuhan internet mempengaruhi pengunjung website semakin meningkat dan membuat beban traffic meningkat pada server, semakin banyak jumlah traffic ke server bisa menyebabkan web server menjadi down, jika digunakan dengan jumlah berlebih (overload). Server down karena tidak mampu dalam menjalankan request yang berlebihan, upaya untuk meningkatkan kinerja web server karena adanya akses request layanan yang sangat banyak, maka menggunakan sistem load balancing adalah solusi untuk mengatasi terjadinya server down. Server load balancing dapat bertugas untuk mendistribusikan beban kerja ke banyak server, dengan mempertimbangkan kapasitas dari setiap server yang ada. Pengujian ini dilakukan dengan 6 buah server. Yang masing masing mendapatkan 4000,8000, 12000, 16000 request, dengan pengujian menggunakan software apache benchmarking tool. Dengan Menerapkan load balancing Nginx mampu menstabilkan dan menjaga keseimbangan web server, dengan didukung 3 metode algoritma (Round Robin, Leas Connection, IP Hash) yang bisa digunakan dalam load balancing Nginx. Metode algoritma yang terbaik adalah Least Connection karena mempunyai stabilitas response time 116ms yang signifikan dan kecepatan response time nya lebih bagus dan mendapatkan 2300.96 req/s. DOI: https://doi.org/10.26905/jtmi.v6i1.3792

Metode Antrian First In First Out Berbasis Website Pada Sistem Reservasi Gadget Fhizyel Nazareta; Iskandar Fitri; Fauziah Fauziah
JATISI (Jurnal Teknik Informatika dan Sistem Informasi) Vol 8 No 4 (2021): JATISI (Jurnal Teknik Informatika dan Sistem Informasi)
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat (LPPM) STMIK Global Informatika MDP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35957/jatisi.v8i4.1265

Reservation system is a system to find out information on certain services. Service gadget reservation system aims to make easier for consumers to register reservations because it is done online, so consumers don't have to wait to follow long queues when making manual reservations. Therefore, this application was created and needed as a solution to problems such as long queues when making reservations on a web-based computing basis. The application of the method used in making this gadget service application system, namely the First In First Out Queue method which applies Single Channel-Single Phase. In this application, consumers make a service queue reservation on the service order reservation page, after data is send will then be processed by the system for verification. After system will view a reservation proof page to printed by consumers as proof of having made a reservation. The tests carried out made comparisons on web browsers such as Microsoft Edge it took 53 second to make a reservation by running the service gadget reservation application, while testing on Mozilla Firefox 54 second and Google Chrome 58 second. In addition, in usage RAM Microsoft Edge uses 168.4KB, while testing on Mozilla Firefox 212.6KB and Google Chrome 274.0KB.

Aplikasi Mitra Kerjasama Universitas Nasional dalam Bentuk MOA dan MOU Berbasis Web Mikhael Kristian Mike; Gio Fandy H Nainggolan; Iskandar Fitri
JTIM : Jurnal Teknologi Informasi dan Multimedia Vol 2 No 2 (2020): August
Publisher : Puslitbang Sekawan Institute Nusa Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35746/jtim.v2i2.93

Cooperation is an effort made by several individuals and also groups to achieve an agreedgoal. The collaboration was given as a partnership between the National University and otherdomestic and foreign institutions and companies. With the collaboration program at NationalUniversity, student can carry out activities such as training, research, student exchangesduring partner relations. The process of this collaboration activity can be carried out inmanaging collaborative activities between other agencies, namely requiring a website to builda cooperation program that can express agreement from both parties. In this research, acooperation partner submission system was proposed for submitting a website using thewaterfall method. The application of the partner waterfall cooperation website which isimplemented on the website display page created with the help of web development software isusing Sublime text 3 and data management using Xampp. On the website page there areseveral criteria in the process of submitting cooperation at the National University whichforms the basic of agreement with the National University, namely in the form of an MoA(Memorandum of Agreement) memorandum of agreement and MoU (Memorandum ofUnderstanding) memorandum of agreement. The results of submissions from other agenciesgiven to the National University in the form of the cooperation proposal of each criterion. Theprocess of cooperation agreement with the waterfall method produces agencies and othercompanies that are entitled to the cooperation agreement.)

IMPLEMENTATION ANALYTICAL HIERARCHY PROCESS AND WEIGHTED PRODUCT METHOD FOR LOVEBIRD SELECTION IDENTIFICATION APPLICATIONS Yolanda Nur Oktavia; Nur hayati; Iskandar Fitri
Jurnal Riset Informatika Vol 4 No 1 (2021): Period of December 2021
Publisher : Kresnamedia Publisher

Among the many types of birds in Indonesia, lovebirds are pets that attract the most attention and become a favorite among the public. This is evidenced by the many communities of lovebird lovers throughout Indonesia. The problem that exists for ordinary people who do not understand the animal world and have little knowledge about the quality of the lovebirds, it is not uncommon for the problem to be in doing business for sellers it is difficult to make decisions in overcoming the problem of selecting the best birds. Based on this problem, the author compares the combination of the analytical hierarchy process and weighted product methods with the analytical hierarchy process and TOPSIS from this comparison, the highest score is 392.63 on the analytical hierarchy process and weighted product for the best quality web-based lovebird selection recommendation application design application. From the results of application testing and manual calculations with 64 sample data, it was concluded that 4 users or about 6% were included in the low accuracy category in the best lovebird recommendation results, 12 users or 19% of the total tests were stated at a moderate level of accuracy in the lovebird recommendation results. The best and 48 users or 75% of the total tests were stated at the high accuracy category level in the best lovebird recommendation results with the highest accuracy value of 80.2% on the Albino lovebird type.

OPTIMALIZATION OF MICROSTRIP SLOT ARRAY ANTENNAS FOR MULTI-WIDEBAND Iskandar Fitri
Jurnal Teknologi Dirgantara Vol 5, No.1 Juni (2007)
Publisher : National Institute of Aeronautics and Space - LAPAN

Show Abstract | Download Original | Original Source | Check in Google Scholar

Microstrip slot antenna fed by matching network of microstrip line to increase very wide-bandwidth and multiband is proposed. The microstrip line composed of multi tuning stubs is used to control slots antenna real impedance to match with impwdance cahracteristic of feeding line so that it could increase the bandwidth. The design are achieves good input impedance in the ranges frequency of 1.3 - 5.1 GHz for single slot and 1.1 - 6.4 GHz for two slots. The bandwidths of antennas become very wide if the slots made in array configuration. The measured return loss S11 agrees well with the simulation results for single slot as axample. Keywords: microstrip slot antenna, array configuration, network impedance, multi tuning stub.

Co-Authors Aditya Nuryudha Iriandi Agung Triayudi Agus Gunaryati Agus Iskandar Ahmad Khuzaifi Ahmad Muslih Mardia Albaar Rubhasy Alhadi Alhadi Andri Aningsih Andrianingsih Anggun Wibowo Ani Rahmawati Aris Gunaryarti Aris Gunaryati Ariwirawan Djali Atalya Kurnia Sari Bagas Apriandadwi Putra Bayu Setyo Prayogi Ben Rahman Budi Tri Utomo Budianto Budianto Chairil Rohadi Danang Aji Pangestu Denis Taslim Denny Hidayatullah Deny Hidayatullah Deny Hidayatullah Dicky Prasetyo Eky Pambudi Syiamtoni Endah Tri Esti Handayani Eri Mardiani Fahmi Apriliansyah Fauzan Muhammad Fauziah Fauziah Fhizyel Nazareta Gabbi Rinzani Gio Fandy H Nainggolan Hasbulloh Hasbulloh Hendy Dwi Haryoyudhanto Henry Prasetyo Utomo Ilham Wahyudi Siadi Iman Cahyadi Ira Diana Sholihati Kresno Wibowo Kurniadin Nehe Leony Mayank Andiny Mikhael Kristian Mikhael Kristian Mike Mochammad Arya Darmawan Muhamad Alfaiz Muhamad Sopiyan Muhammad Faiz Syafii Muhammad Rafiq Zayana Muhammad Raihan Azis Muhammad Zulfi Rahmanzi Muklis Haryono Novi Dian Nathasia Nur Hayati Nurhayati Nurhayati Nurhazmi Hawari Oka Saputra Rafif Ramadhan Al Yarda Richard Ronaldo Marbun Rima Tamara Aldisa Rini Nuraini Sari Ningsih Sumarhadi Sumarhadi Supriyanto Supriyanto Suryadi Suryadi Syamsun Nahar Abdullah Teuku Feraldy Ramadhani Tri Oktafi Sidqi Ucuk Darusalam Willi Akbar Satria Winarsih Winarsih Wisnu Andika Putra Yoga Furqaansyah Yolanda Nur Oktavia Yudhi Setiawan

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