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Helmy, S.T., M.Eng
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Program Studi Teknik Telekomunikasi Jurusan Teknik Elektro Politeknik Negeri Semarang Jl. Prof. H. Soedarto, S.H. Semarang
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Journal of Applied Information, Communication and Technology (JAICT)
Published by Politeknik Negeri Semarang
ISSN : 25416340     EISSN : 25416359     DOI : https://doi.org/10.32497/jaict
Core Subject : Engineering,
Engineering
Focus of JAICT: Journal of Applied Information and Communication Technologies is published twice per year and is committed to publishing high-quality articles that advance the practical applications of communication and information technologies. JAICT scope covers all aspects of theory, application and design of communication and information technologies, including (but not limited): Communication and Information Theory. Mobile and Wireless Communication, Cognitive Radio Networks. Ad Hoc, Mesh, Wireless Sensor Network, Distributed System and cloud computing Computer networking and IoT Optimization Algorithms, Artificial intelligence, Machine Learning, and Adaptive System.
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 5 Documents
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Search results for , issue "Vol 3, No 1 (2018)" : 5 Documents clear
VSWR value measurement analysis using Direct Digital Synthesizer Lorenza Louis Natalia
JAICT Vol 3, No 1 (2018)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (790.48 KB) | DOI: 10.32497/jaict.v3i1.1341

Abstract

SWR Analyzer is an electronic device radio is useful to know the value of VSWR and antenna impedance without the use of radio tranciever. In this final use Direct Digital Synthesizer (DDS) to generatewaveforms analog digitally. DDS signal generation programmable via Arduino nano. The frequency used is aantenna operating frequency dipole 7 MHz which are in the range 6.9 MHz - 7.4 MHz.calibration SWR Analyzer is done by providing a form of pure resistor load with the acquisition of a data error of 4% as compared with the theory. The test results niali VSWR atantenna dipole 7 MHzusing an SWR Analyzer then compared with measuring devices in general, ie VSWR SWR meter. Earned value matching 1: 1 obtained by SWR Analyzer at a frequency of 6.9 MHz, while using the SWR meter lowest VSWR values obtained at 7:04 MHz frequency with a value ofratio matching impedance1:35: 1. The accuracy of the measurement results using the SWR Analyzer when compared with SWR meter reaches a value 83%.
Scheduling Of Ukm (Unit Kegiatan Mahasiswa) Sports Activities At State University Of Medan (Unimed) Using Genetic Algorithm Yanty Faradillah
JAICT Vol 3, No 1 (2018)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (443.054 KB) | DOI: 10.32497/jaict.v3i1.1348

Abstract

Scheduling is a complex and time-consuming process, and there are many things to be adjusted. Therefore, the conventional scheduling can be completed by using the Genetic Algorithm method. This research is to solve the problem of scheduling on the activities of UKM (Unit Kegiatan Mahasiswa)//Student Activity Unit) Sport at Unimed, by using the search technique simultaneously on a number of solutions that might be known as population term. Individuals which exist in one individual population contained in one population are called chromosomes. This chromosome is a solution that is still a symbol. The initial population is randomly constructed, while the population is the result of the evolution of chromosomes through literacy called generation. Using this Genetic Algorithm scheduling plan would bring benefits to the user because scheduling can be seen on the computer and in preparing of the next schedule, there won’t be a problem or conflict.
Problematic Student Identification and Visualization in The Counseling Activites Evaliata Br Sembiring
JAICT Vol 3, No 1 (2018)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (501.285 KB) | DOI: 10.32497/jaict.v3i1.1092

Abstract

The counseling activities are procedures carried out by academic advisers to identify problematic students, especially in their academic learning process. Students are categorized as problematic when they do not submit their KRS, have a lower GPA than the college standard, have not yet paid their due, or receive warning letters owing to their misconducts. The current system provides every students’ data but academic advisers still need to identify every problematic students’ data one by one. A working solution would be to present the data in a visualization, so the problematic students along with their problem category can be identified automatically. The application employs the UML approach in its planning and web-based application development tools in its implementation. Highchart is implemented in the data visualization. The resulted application boasts the student data management feature to help the problematic student identification process. This feature automatically identifies the problematic students on each term by visualizing it in a colored charts and tables.
Modulation Coding Scheme Performance Analysis (Mcs) Wireless 802.11ac Indoor At 5 Ghz Frequency In West And East Telecommunication Labs Politechnic State Of Semarang Dimas Tampan Setiadi
JAICT Vol 3, No 1 (2018)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1109.271 KB) | DOI: 10.32497/jaict.v3i1.1343

Abstract

Modulation Coding Scheme or MCS is a value that specifies the modulation, coding and number of spatial streams and produces a fixed rate data rate based on channel conditions and RSSI values received by the user. Modulation on MCS there are 5 kinds of BPSK, QPSK, 16 QAM, 64 QAM and 256 QAM. While the coding rate there are 4 kinds of ½, 2/3, ¾ and 5/6. MCS and RSSI. Changes can not be separated from wireless propagation that includes Large Scale Propagation and Small Scale Fading in particular the existence of obstacles in the form of objects and indoor or outdoor areas. Test results show that major changes to RSSI are influenced by indoor or outdoor areas. MCS changes are uncertain and not RSSI based. MCS and RSSI will change based on channel conditions.
Sensor Data Analysis On Monitoring And Control System Of Temperature And Humidity Based On Android In Soybean Seed Storage Room Using Nodemcu Sindung HW Sasono
JAICT Vol 3, No 1 (2018)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (748.326 KB) | DOI: 10.32497/jaict.v3i1.1290

Abstract

soybean seeds may be damaged during storage time. Temperature and humidity of soybean seed storage room, is one of the external factors of damage to the seed. The system consists of monitoring and control temperature and humidity in some rooms used as soybean seed storage room samples. This study discusses and perform sensor data analysis using several types of temperature and humidity sensors based on Internet of Things. Sensor nodes generate data and processed by a microcontroller NodeMCU ESP8266, and the results data is then transmitted by the Internet network using MQTT broker and stored in the database. Results data is then analyzed to monitor the condition of soybean seed storage room. SHT30 sensor has the most excellent temperature accuracy of 98, 21%. DHT22 sensor has the most excellent moisture accuracy of 95.74%. Data sending to the database has a good level of dataloss category for node 1 is 3.39%, 4.33% for node 2, and 3.22% for node 3. Air conditioner control system using Android can keep the room temperature state in the range of 18-23oC and humidity of 40-60% with an air conditioning remote control setting at 20oC on an area of 36 m2.

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