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All Journal Bulletin of Electrical Engineering and Informatics Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Kitektro Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Jurnal Penelitian Pendidikan IPA (JPPIPA) Martabe : Jurnal Pengabdian Kepada Masyarakat JURNAL PENDIDIKAN TAMBUSAI Jurnal Kreativitas PKM JURNAL MUTIARA NERS Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Indonesian Journal of Sociology, Education and Development (IJSED) International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Journal of Education Research Jurnal Nasional Teknik Elektro dan Teknologi Informasi SASKARA: Indonesian Journal of Society Studies Bacarita Law Journal Journal Keperawatan YASIN: Jurnal Pendidikan dan Sosial Budaya MASALIQ: Jurnal Pendidikan dan Sains 12 Waiheru ASJN (Aisyiyah Surakarta Journal of Nursing) JURNAL PARADIGMA: Journal of Sociology Research and Education International Journal of Multidisciplinary Sciences and Arts Jurnal Rekayasa elektrika Jurnal Restorative Jurnal INFOTEL West Science Social and Humanities Studies Al-Bayyinah PESARE: Science and Engineering Service Journal JURNAL BUANA Mangabdi: Journal of Community Engagement in Religion, Social, and Humanities DCS: Jurnal Pengabdian Masyarakat Agroscript: Journal of Applied Agricultural Sciences
Afdhal Afdhal
Universitas Syiah Kuala
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Simulasi Perjalanan Harian Pegawai Unsyiah Untuk Efisiensi Waktu Keberangkatan Terbaik Berdasarkan Model Lalu Lintas Kendaraan Elizar Elizar; Afdhal Afdhal
Jurnal Rekayasa Elektrika Vol 11, No 5 (2015)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (802.231 KB) | DOI: 10.17529/jre.v11i5.2402

Abstract

High traffic densitiy  becomes one of a big problem of transportation in many big developing cities in Indonesia. The growth number of vehicles relatively much higher if compared to the growth of road infrastructure. Banda Aceh as a central city of Aceh Province are also facing moreless the same transportation problem,where traffic becomes very usual especially in peak hour in the morning when many people start their activity. It also happened in the afternoon when most of Banda Aceh people especially the one who work as a government servant going back from work. This research is trying to analyze one of the case of daily going to work travel route of Unsyiah administration staf. The result is very important to analyze the best departure time for the staff to minimize travel time. This research have developed a simulation model using an IT technology based on vehicle traffic mobility model. The simulation offered the fastest travel time solution with the best departure time to arrive at the destination by avoiding morning peak time traffic.
Kombinasi Waktu Sinkronisasi dan Nilai Salt untuk Peningkatan Keamanan pada Single Sign-On Rizal Munadi; Zuhar Musliyana; Teuku Yuliar Arif; Afdhal; Syahrial
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 3: Agustus 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1026.358 KB)

Abstract

Single sign-on (SSO) is a session authentication process that allows a user to login by using user registered identity and password in order to access appropriate applications. The authentication process takes the user in to login for all the applications they have been given rights to and eliminates further prompts when they switch applications during a particular session. Its implementation will provide a reduction of password burden to access many applications for every login process. Ease of access through a single account needs to be addressed carefully to ensure the authentication credentials that are not scattered and known by others. Currently, there are several open source SSO authentication methods available. However, the use of existing authentication methods is still vulnerable to attack, such as Man-In-The-Middle. In this study, SSO authentication algorithm using One-Time Password (OTP) is proposed using a combination of time synchronization and salt value. These combinations are used to verify user session while accessing any application with SSO mechanism. The results show that the proposed OTP algorithm can handle SSO authentication process in good fashion and also protect from Man-In-The-Middle Attack.
Pemodelan dan Simulasi VANETs Menggunakan Federated Mobility Model; Sebuah Artikel Tinjauan Afdhal Afdhal
Jurnal Rekayasa Elektrika Vol 11, No 2 (2014)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v11i2.2242

Abstract

The emergence of Vehicular Ad-hoc Networks (VANETs) as part of the Intelligent Transportation Systems (ITS) technology development was expected to become an advanced method to solve the transportation system problem. The implementation of VANETs is expected to provide a new solution for traffic management strategy. Its main targets is to continue prioritizing traffic safety and to prevent the accidents on the roads. One of the VANETs problems before being implemented in the real world is the degree of freedom of the vehicle's mobility that limited by the road topologies. Various modellings and simulations have been performed to produce the most realistic mobility model. However, those models had become new paradigms due to various factors that limited them. The presence of the federated mobility model as an approach for traffic mobility modeling is considered to be able to provide more realistic and accurate VANETs simulation. Therefore, this article presents some brief reviews and contrast a number of the simulation and mobility models that have been used widely as compared to the federated mobility models that have developed until the present. The article's objective is to facilitate a better understanding of the traffic mobility modeling for the VANETs simulation that started from the interaction process until the integration between simulators. The understanding of the traffic mobility models will complement the knowledge that enable to perform the simulation of the VANETs implementation approaching the real conditions.
IEEE 802.11ac sebagai Standar Pertama untuk Gigabit Wireless LAN Afdhal Afdhal; Elizar Elizar
Jurnal Rekayasa Elektrika Vol 11, No 1 (2014)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v11i1.1994

Abstract

WLAN is a technology that currently has been used widely. This technology is considered as a data transferring media technology within the LAN/MAN. To ensure that WLAN technology can be used widely in the whole world, the IEEE has set a standard known as 802.11 to be an international standard for the WLAN technology. This standard was appeared in 1997, and has been revised and improved for several times. This improvement is done to anticipate the rapidly grown WLAN market as well as to keep this technology remains effective, efficient, and reliable at any time. At the beginning of 2014, the IEEE has set 802.11ac-2013 as a new standard for WLANs that operate below 6 GHz to achieve a data rate for up to 7 Gbps. The purpose of this article is to describe comprehensively the IEEE 802.11ac standard as a result of recent changes to the regulatory for WLAN technology which is known as the first standard issued by the IEEE for the gigabit WLANs. This article discusses the goals and objectives to be achieved by 802.11ac standard as well as the parts that have been enhanced significantly both in its PHY and MAC layers. This article will also contrast the differences between the 802.11ac standard and previous WLAN standards. Finally it will also explain the level of compatibility and interoperability of 802.11ac standards with some of previous WLAN standard.Keywords: IEEE, 802.11, 802.11ac, Gigabit WLAN
Studi Perbandingan Layanan Cloud Computing Afdhal Afdhal
Jurnal Rekayasa Elektrika Vol 10, No 4 (2013)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v10i4.1110

Abstract

In the past few years, cloud computing has became a dominant topic in the IT area. Cloud computing offers hardware, infrastructure, platform and applications without requiring end-users knowledge of the physical location and the configuration of providers who deliver the services. It has been a good solution to increase reliability, reduce computing cost, and make opportunities to IT industries to get more advantages. The purpose of this article is to present a better understanding of cloud delivery service, correlation and inter-dependency. This article compares and contrasts the different levels of delivery services and the development models, identify issues, and future directions on cloud computing. The end-users comprehension of cloud computing delivery service classification will equip them with knowledge to determine and decide which business model that will be chosen and adopted securely and comfortably. The last part of this article provides several recommendations for cloud computing service providers and end-users.
Simulasi Perjalanan Harian Pegawai Unsyiah Untuk Efisiensi Waktu Keberangkatan Terbaik Berdasarkan Model Lalu Lintas Kendaraan Elizar Elizar; Afdhal Afdhal
Jurnal Rekayasa Elektrika Vol 11, No 5 (2015)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v11i5.2402

Abstract

High traffic densitiy  becomes one of a big problem of transportation in many big developing cities in Indonesia. The growth number of vehicles relatively much higher if compared to the growth of road infrastructure. Banda Aceh as a central city of Aceh Province are also facing moreless the same transportation problem,where traffic becomes very usual especially in peak hour in the morning when many people start their activity. It also happened in the afternoon when most of Banda Aceh people especially the one who work as a government servant going back from work. This research is trying to analyze one of the case of daily going to work travel route of Unsyiah administration staf. The result is very important to analyze the best departure time for the staff to minimize travel time. This research have developed a simulation model using an IT technology based on vehicle traffic mobility model. The simulation offered the fastest travel time solution with the best departure time to arrive at the destination by avoiding morning peak time traffic.
Pengaruh Pertumbuhan Penduduk terhadap Perkembangan Permukiman di Kecamatan Koto Tangah Tahun 2012-2022 Fitri, Rahmadini Awlya; Afdhal, Afdhal
YASIN Vol 4 No 6 (2024): DESEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/yasin.v4i6.3966

Abstract

Koto Tangah sub-district is one of the largest sub-districts in Padang City, this sub-district has an increase in population from year to year, which has an impact on increasing the area of land use for residential settlements. The type of research is descriptive quantitative using settlement maps in 2012 and 2022 and population data in 2012-2022. The analysis technique used is the geometric calculation method to calculate the population growth rate in 2012-2022, overlaying the 2012-2022 settlement map, nearest neighbor analysis and simple linear regression. The results showed that there was an increase in population during the period. The analysis of population growth and settlement development of Koto Tangah Subdistrict from 2012 to 2022 for a ten-year period showed a stable trend. In 2012-2022 there was a population growth of 1.7% with settlement development increasing by 817.27 Ha. The pattern of settlement development in Koto Tangah Sub-district is a clustered pattern following the road network, with the direction of development more dominant to the East and North. The correlation analysis shows that the relationship between population growth and the development of settlement area is very strong (R = 0.699), indicating a strong positive relationship between the two variables. The coefficient of determination (R Square) of 0.489 reveals that population growth has an influence of 48.9% on the development of settlement area. These results indicate that population growth has a significant influence on settlement development.
Hubungan antara Sistem Zonasi Sekolah dengan Hasil Belajar Geografi Siswa Kelas XI IPS di SMA N 1 Tualang Yahya, Rafiki Rahmat; Afdhal, Afdhal
MASALIQ Vol 4 No 4 (2024): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v4i4.3186

Abstract

One of the new policies issued by the Ministry of Education and Culture regarding the Admission of New Students (PPDB) is the zoning system. This policy is one of the government's efforts to equalize education. This also directs students to register at the school closest to their domicile. However, at SMA N 1 Tualang there are several phenomena that emerge which create a relationship between the school zoning system and geography learning outcomes. This research aims to determine the relationship between the school zoning system and the geography learning outcomes of class XI IPS students at SMAN 1 Tualang, Siak Regency. The method used in this research is quantitative with a correlational research type. Based on hypothesis testing using the one-way test category with a significance level of 5%, the results showed that the zoning system had a positive effect on the geography learning outcomes of class Students have close and positive relationships. With research results showing that the zoning system influences student learning outcomes, therefore the zoning system needs to be improved.
Overview of Geographical Location of Puskesmas and Level of Nurses' Knowledge in Tsunami Disaster Risk Mitigation Preparedness in Banda Aceh Afdhal, Afdhal; Rimadeni, Yeni; Hayati, Wirda; Jamni, Teuku; Desiana, Desiana; Munazar, Munazar
Journal Keperawatan Vol. 3 No. 2 (2024): November 2024
Publisher : Poltekkes Kemenkes Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58774/jourkep.v3i2.92

Abstract

Background: The 2004 Tsunami in Aceh caused infrastructure damage, thousands of deaths, and significant economic and health crises. Health facilities such as Community Health Centers (Puskesmas) which are the main health facilities in saving patients' lives were destroyed. To overcome this impact, health infrastructure must be rebuilt with earthquake-resistant building structures using certain materials and systems to withstand vertical and lateral loads that occur during earthquakes. In addition, nurses as primary health workers must have sufficient knowledge and skills to prevent loss of life if the disaster occurs through disaster mitigation preparedness. Purpose:  To identify the geographical distribution of Puskesmas locations in Banda Aceh City based on the level of tsunami risk and assess the level of knowledge of nurses' preparedness in facing disaster situations. Methods: Descriptive research type with spatial analysis method was used in this study. The data used included topographic maps, tsunami risk maps, and Puskesmas locations, which were analyzed using ArcGIS software. For nurses' knowledge level data, the population used was the entire number of nurses at the Banda Aceh City Puskesmas and used a total sampling technique which resulted in a sample of 87 nurses. Results: The study showed that 7 out of 11 Puskesmas (63.6%) in Banda Aceh were in the moderate to high tsunami risk zone. The level of knowledge of nurses regarding tsunami disaster preparedness was mostly good, namely 65 people (75%). Conclusion: Almost half of the Puskesmas in Banda Aceh are geographically located in the high tsunami risk zone category and the level of knowledge of community health center nurses regarding tsunami disaster preparedness is mostly good.
MECHANICAL ANISOTROPY OF COLD-ROLLED ST-37 STEEL PLATE UNDER HIGH STRAIN RATES LOADINGS Perkasa, Rilis Eka; Gunawan, Leonardo; Santosa, Sigit Puji; Afdhal, Afdhal
International Journal of Mechanical Engineering Technologies and Applications Vol. 4 No. 2 (2023)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2023.004.02.9

Abstract

Cold rolling process in metal could increase its strength and hardness, but also induces mechanical anisotropy. This is caused by unresolved plastic strain and microstructural changes caused by plastic deformation exerted by pair of rolls at a relatively low temperature. This research aims to provide understandings on anisotropic and strain rate sensitive behaviour of St-37 mild steel. The microstructure of rolled and unrolled St-37 plate were observed in 3 directions relative to the rolling direction. The cylindrical specimens were then prepared from rolled plate with 33.3% reduction in the orientation of 0o, 45o, and 90o relative to the rolling direction. Specimens were also prepared from unrolled plate as comparison in the same directions. These specimens were then tested in compression loading, first in quasi-static condition, and then by using Split-Hopkinson Pressure Bar (SHPB) at the strain rate of 1200 s-1. The experimental results in the form of stress-strain curves are used to obtain the parameters of Simplified Johnson-Cook viscoplastic model. The anisotropy of yield strength in rolled specimens could be seen on both quasi-static and high strain rate condition, where the highest strength found on the specimens perpendicular to the rolling direction. In addition, the effect of cold rolling to the strain rate sensitivity of the material were also captured successfully in this study, where specimens from rolled plate show less strain rate sensitivity compared to the unrolled specimens.
Co-Authors Adriman, Ramzi Adriman, Ramzi Afdhal Afdhal Agustia, Nofrita Ainal Mardhiah Akbar Akbar Alfarizi, Khalis Amallya, Rania Amri, Asbahrul Angraina, Dilla Apriliani, Nafa Dwi Aqif, Hurriyatul Asfianda, Muhammad Away, Yuwaldi Ben, Hasbaini Binti Basir, Nurlida Boris Kaido Chairuman Desiana Desiana, Desiana Dhiaul Qadri Elizar Elizar Elvin, Said Devi Fadhla, Fadhla Feri Agriani Fitri, Rahmadini Awlya Fitriadi, Nuzuli Fonna, Syarizal Gani, Azhar Abdul Haimi Ardiansyah Hasbaini, Hasbaini Haulussy, Rais Rahman Husni Husni imam maulana, imam Immu Puteri Sari Isneini Isneini, Isneini Izzah , Cut Indah Nurul Jamni, Teuku Jannah, Dina Miftahul Johanda, Azra Sastya Junidar, Junidar Junita Putri, Siska Kahlil Muchtar Khaira, Fadhilatul Khairani Khairani Khairil Khairil Lalihun, Ishaka Leonardo Gunawan, Leonardo Lessy, Dien Taufan Lindawati Lindawati Litaay, Simona Christina Hendrika Ma'aruf, Abdullah Makaruku, Nathalia Debby Manuputty , Feky Manuputty, Feky Maulina, Dian Melinda Melinda Minda Prima, Syamsul Mislina, Mislina Muhammad Asfianda Munazar Munazar Mutiara Dwi Sari Nofranita, Willy Nugroho, Erlangga Galih Zulva Nurhayati Nurhayati Nurleli, Nurleli Oktiana, Maulisa P., Febriani Anjelika Pahri, Aina Pamudi, Berwi Fazri Perkasa, Rilis Eka Pratama, Irvan Putra Pudjiastuti, Duwi Puguh Setiawan Rahmad Rahmad Rapitos Sidiq Ria Purnawian Sulistiani, Ria Purnawian Riani, Eka Oktarina Rieuwpassa, Sarmalina Rimadeni, Yeni Ritawati Ritawati Rizal Munadi Rizki Wan Okta Bina Rukman, Auliah Andika Rusnanda, Resky Rusyda, Arina Ilfa Santosa, Sigit Puji Saputra, Devi Satria Sari, Asrianti Resita Sari, Ranti Wulan Sastra, Hasan Yudhie Siregar, Yuanita Aprilandini Sismen, Andres Sitio, Roma Sri Oktika Syahputri Suwardi Suwardi SYAHRIAL SYAHRIAL Syahrial, Syahrial Syamsuddin, Asniah Syamsuri, Andi Santri Taufik Taufik Taufiq A. Gani Teuku Yuliar Arif Teuku Yuliar Arif Titing, Williem Bernadus Umran, Munzir Warnidar, Eka Wirda Hayati Wiwit Aditama Yahya, Rafiki Rahmat Yohana, Siti Yudha Nurdin Yudi Antomi Yuwaldi Away Zainal, Zulfan Zakaria Zakaria Zalnofri, Zalnofri Zuhar Musliyana Zuhar Musliyana, Zuhar Zulfikar Zulfikar Zulhelmi .