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ANALISIS KUALITAS SINYAL WIFI PADA UNIVERSITAS MUSLIM INDONESIA Alwi, Erick Irawadi
INFORMAL: Informatics Journal Vol 4 No 1 (2019): INFORMAL - Informatics Journal
Publisher : Faculty of Computer Science, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/isj.v4i1.10153

Abstract

Indonesian Muslim universities utilize WiFi networks as a facility to support the implementation of student and academic lecture activities within the scope of Indonesian Muslim universities. However, with the number of Indonesian Muslim University students around 17,000 people, internet access to the internet network has become slow. In addition, there are several faculties on several floors that do not get wifi signals or get weak signals so students cannot enjoy the internet network. Because it is necessary to measure the signal quality on wireless devices (AP) in each faculty in the scope of UMI with action research methods and analyze the signal quality so that it is known what factors can cause the wifi signal to sometimes be weak or not even get a signal at all
Analisis Sistem Virtual Cluster Pada Komputasi Paralel Menggunakan Layanan IAAS Retnani, Diah Ayu; Alwi, Erick Irawadi
INFORMAL: Informatics Journal Vol 1, No 1 (2016): INFORMAL: Informatics Journal
Publisher : Program Studi Sistem Informasi - Universitas Jember

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

Abstract

Industrial technology development needed solutions about increasing computing resource performance. The one of alternative solution could resolve this problem using the high performance computing’s concept example cluster. Cluster could increase performance of computing using many integrated computers in the computer network. cluster had problem in infrastructure system example place and hardware. One of the alternative solutions was virtual computer for infrastructure. one of cloud system services was IAAS. IAAS could produce integrated virtual computation resource on network directly. This study discussed about virtual cluster’s performance using the virtual computer to solve the parallel computing’s problem. Virtual computer in this study used cloud services. The research method was by implementing OpenMPI on a Linux-based computer cluster using five virtual computer and analyzed the performance of the system by different scenario tests. The results of this study Showed that the cloud was able to facilitate user to provide integrated infrastruktures computing service on a network-based and the virtual cluster machine was suitable when large size of data. Ideally, the value of speedup increased when the number of processors increases. The value of Speed-up was ideal when the the data size of 1000 using two nodes (1,346) and three nodes (1.0465). The value of Efficiency decreases when increasing number of processors. Most of the Value of speed-up and efficiency were not ideal at this experiment Because there was the overhead in the parallel system, for example, the additional parallel computing, inter-processor communication and synchronization processes in the cloud as provider of virtual computers.
Analisis Sistem Virtual Cluster Pada Komputasi Paralel Menggunakan Layanan IAAS Retnani, Diah Ayu; Alwi, Erick Irawadi
INFORMAL: Informatics Journal Vol 1, No 1 (2016): INFORMAL: Informatics Journal
Publisher : Program Ilmu Komputer - Universitas Jember

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

Abstract

Industrial technology development needed solutions about increasing computing resource performance. The one of alternative solution could resolve this problem using the high performance computing’s concept example cluster. Cluster could increase performance of computing using many integrated computers in the computer network. cluster had problem in infrastructure system example place and hardware. One of the alternative solutions was virtual computer for infrastructure. one of cloud system services was IAAS. IAAS could produce integrated virtual computation resource on network directly. This study discussed about virtual cluster’s performance using the virtual computer to solve the parallel computing’s problem. Virtual computer in this study used cloud services. The research method was by implementing OpenMPI on a Linux-based computer cluster using five virtual computer and analyzed the performance of the system by different scenario tests. The results of this study Showed that the cloud was able to facilitate user to provide integrated infrastruktures computing service on a network-based and the virtual cluster machine was suitable when large size of data. Ideally, the value of speedup increased when the number of processors increases. The value of Speed-up was ideal when the the data size of 1000 using two nodes (1,346) and three nodes (1.0465). The value of Efficiency decreases when increasing number of processors. Most of the Value of speed-up and efficiency were not ideal at this experiment Because there was the overhead in the parallel system, for example, the additional parallel computing, inter-processor communication and synchronization processes in the cloud as provider of virtual computers.
DESIGN WEB-BASED ELECTRICAL CONTROL SYSTEM USING RASPBERRY PI Indra, Dolly; Tasmil, Tasmil; Herman, Herman; Mansyur, St. Hajrah; Alwi, Erick Irawadi
Journal of Information Technology and Its Utilization Vol 2, No 1 (2019)
Publisher : Balai Besar Pengembangan SDM dan Penelitian Komunikasi dan Informatika Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (349.742 KB) | DOI: 10.30818/jitu.2.1.2275

Abstract

The use of current website technology can be applied as a control and monitoring system, which is used to control electrical devices, so that the user can only control the PC or smartphone that has been connected to Wi-Fi or the Internet. In this case the control uses the Raspberry Pi Mini PC which has several advantages such as low power and is relatively easy when connected with a web server compared to a microcontroller. By utilizing the Raspberry Pi Mini PC as a web server, it can replace PC functions in general. The results in this study are the Electric Control System that has been made capable of controlling 4 AC voltage electronics as well as 4 relays with each relay capable of bearing a maximum load of 2200 watts using a power supply on the Raspberry Pi which has a minimum of 0.7 amperes and Control of electrical load can be done within a distance of 0 meters - 15 meters from the wireless router
DESIGN WEB-BASED ELECTRICAL CONTROL SYSTEM USING RASPBERRY PI Indra, Dolly; Tasmil, Tasmil; Herman, Herman; Mansyur, St. Hajrah; Alwi, Erick Irawadi
Journal of Information Technology and Its Utilization Vol 2, No 1 (2019)
Publisher : Balai Besar Pengembangan SDM dan Penelitian Komunikasi dan Informatika Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30818/jitu.2.1.2275

Abstract

The use of current website technology can be applied as a control and monitoring system, which is used to control electrical devices, so that the user can only control the PC or smartphone that has been connected to Wi-Fi or the Internet. In this case the control uses the Raspberry Pi Mini PC which has several advantages such as low power and is relatively easy when connected with a web server compared to a microcontroller. By utilizing the Raspberry Pi Mini PC as a web server, it can replace PC functions in general. The results in this study are the Electric Control System that has been made capable of controlling 4 AC voltage electronics as well as 4 relays with each relay capable of bearing a maximum load of 2200 watts using a power supply on the Raspberry Pi which has a minimum of 0.7 amperes and Control of electrical load can be done within a distance of 0 meters - 15 meters from the wireless router