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All Journal ENGINEERING SITEKIN: Jurnal Sains, Teknologi dan Industri Jurnal Transformatika Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Journal of Applied Information, Communication and Technology (JAICT) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Elektrika Prosiding Konferensi Nasional PKM-CSR Jurnal Nasional Teknik Elektro dan Teknologi Informasi Malcom: Indonesian Journal of Machine Learning and Computer Science Electrician : Jurnal Rekayasa dan Teknologi Elektro Tematik
Sri Heranurweni
Universitas Semarang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences Other

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54 Vol 10 No. 1 April 2015 PERANCANGAN MEDIA KOMPRESI VIDEO BERBASIS FAST MODE DECISION ALGORITHM Arifin, Noor; Heranurweni, Sri; Jayanti, Ari Endang
ENGINEERING Vol 10, No 1 (2015)
Publisher : ENGINEERING

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.018 KB)

Abstract

Kompresi video digital sangat dibutuhkan pada media video digital untuk menghemat ruang penyimpanan dan bandwidth yang besar tanpa mengurangi kualitasvideo yang terlalu signifikan. Sehingga dibutuhkan sebuah media kompresi yang mampu mengurangi ukuran file video agar lebih efisien.Untuk merancang media kompresi video pada penelitian ini digunakan bahasa pemrograman C# dengan format keluaran file video berupa .MP4 dan MKV. Hasil kompresi dianalisa nilai MSE dan PSNR pada frame  pertama.Hasil pengujian menunjukkan nilai PSNR berada pada kisaran 30dB sampai 50dB sesuai standar yang diperbolehkan ITU-T 2014.Kata kunci : kompresi, video, PSNR.
54 Vol 10 No. 1 April 2015 PERANCANGAN MEDIA KOMPRESI VIDEO BERBASIS FAST MODE DECISION ALGORITHM Arifin, Noor; Heranurweni, Sri; Jayanti, Ari Endang
ENGINEERING Vol 10, No 1 (2015)
Publisher : Universitas Pancasakti Tegal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.018 KB)

Abstract

Kompresi video digital sangat dibutuhkan pada media video digital untuk menghemat ruang penyimpanan dan bandwidth yang besar tanpa mengurangi kualitasvideo yang terlalu signifikan. Sehingga dibutuhkan sebuah media kompresi yang mampu mengurangi ukuran file video agar lebih efisien.Untuk merancang media kompresi video pada penelitian ini digunakan bahasa pemrograman C# dengan format keluaran file video berupa .MP4 dan MKV. Hasil kompresi dianalisa nilai MSE dan PSNR pada frame  pertama.Hasil pengujian menunjukkan nilai PSNR berada pada kisaran 30dB sampai 50dB sesuai standar yang diperbolehkan ITU-T 2014.Kata kunci : kompresi, video, PSNR.
SISTEM MONITORING PENGENDALI DAN PENGHITUNG WAKTU PADA DRAG RACE BERBASIS MIKROKONTROLER AT MEGA 8535 Bangun Marhendra, Vendi; Heranurweni, Sri
eLEKTRIKA Vol 9, No 2 (2017): Oktober 2017
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/elektrika.v9i2.1164

Abstract

In a drag race, which is often held by race organizers. The process of determining the jump start and determining who crosses the first finish line still relies on human monitoring. Manually recording (stopwatch) is not enough because there are many inhibiting factors, including: operator, start theft by drivers, recording results, damage to the stopwatch and others. The drag race is often held during the day. The hot weather will cause someone to get tired quickly, in this case it is aimed at the person who is the operator who monitors the theft of the start and the operator at the finish line because the person is in the middle of a very hot track. Based on the reasons mentioned above, it is necessary to have a controller and timer system on the ATMega8535 microcontrollerbased drag race. Making this tool will facilitate the work of humans in obtaining information in the racing arena that does not allow humans to do it manually, so that accurate data is obtained.Keywords: Atmega 8535 microcontroller, jump start, stopwatch
RANCANG BANGUN SMART HOME AUTOMATIC CONTROL dengan KOMUNIKASI MELALUI BLUETOOTH HC-05 BERBASIS MIKROKONTROLER ARDUINO dan ANDROID Erwinnanto, Yohan; Kurniawan Nugroho, Andi; Heranurweni, Sri
eLEKTRIKA Vol 9, No 2 (2017): Oktober 2017
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/elektrika.v9i2.1161

Abstract

Design of Smart Home Automatic Control with Communications Via Bluetooth HC-05-Based Microcontroller Arduino and Android, will provide all the comfort, safety, security and energy savings, which takes place automatically and programmed via microcontroller, the house or building. Design of Smart Home Automatic with Control Communications Via Bluetooth HC-05-Based Microcontroller Arduino and Android is intended for automatic control processes. The system consists of seven sensors, keypad password for security doors, HC-05 Bluetooth GSM alarm application and device control applications aktuaktor, and aktuaktor buzzer, dc motors, lights, fans and fan dc exhausting. Among these sensors is a PIR sensor to detect theft, sensor MQ6 to detect leakage of LPG gas and smoke from fires, sensor HC-SR04 ultrasonic for automatic garage doors, fire sensors to detect a fire, the sensor LM35 to detect the temperature of the room, when the room temperature is hot the fan will be on automatically, when the cold room temperature will shut off the fan and LDR sensor to detect the intensity of light during the day which turn the lights off automatically and vice versa, thus saving energy. Homeowners can also control lights and monitoring sensors with android phones that are connected with communication via Bluetooth HC-05 microcontroller arduino, and can receive GSM alarm application sensors such as calling and sms. Test results are used UART communication data transmission between the microcontroller serial monitor monitor has an error of 0 % . HC - 05 Bluetooth can accept orders at the farthest distance of 11 meters . The fire sensor can work well when the fire was 110 cm . Sensor HC - SR04 is already working with an error rate of 0.3 %, so the accuracy of this tool by 100 % - 0.3 % = 99.7 % .Keywords : Security Door , Bluetooth HC - 05 , Microcontroller Arduino and Android , Application Control and Application GSM alarm.
Analisa Teknis Penetapan Kanal Frekuensi Radio Untuk Lembaga Penyiaran Radio Komunitas Wilayah Kabupaten Batang jayati, Ari endang; Minarti, Wahyu; Heranurweni, Sri
Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer Vol 5 No 2 (2021)
Publisher : P3M Politeknik Negeri Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31961/eltikom.v5i2.361

Abstract

The radio frequency spectrum constitutes a limited and strategic natural resource with high economic value, so it must be managed effectively and efficiently to obtain optimal benefits by observing national and international legal principles. Radio Community Broadcasting Institution uses limited frequency allocation in three channels, namely, in the frequency channels 202 (107.7 MHz), 203 (107.8 MHz), and 204 (107.9 MHz), with limited transmit power and area coverage. The problem in this research is the frequency overlap with other community radios in an area. The issue raised is whether it is possible to establish a new community radio in the Batang Regency area by paying attention to existing radios that have licenses in districts/cities that are in the area directly adjacent to Batang Regency by considering the limited allocation of radio frequency channels community, without the occurrence of radio frequency interference with other community radios. The purpose of this research is to solve these problems. It is necessary to have a policy in determining radio frequency users to get good quality radio broadcast reception. The method used is to analyze the frequency determination technique based on the interference analysis on other community broadcasters. By using the Radio Mobile Software for frequency repetition simulation, in this research, the results show that Batang FM Community Radio does not allow to get frequency channels for community radio operations. After all, it interferes with the Service Area of ​​Soneta FM Radio in Pekalongan City because it does not meet the requirements for determining the frequency channel = Eu> NF, namely the Nuisance Field (NF) value of 109.7 dB is greater than the Minimum Usable Field strength (Eu) of 66 dB. In comparison, Limpung FM Radio gets radio frequency on channel 203 (frequency 107.8 MHz) because it meets the requirements for determining the frequency channel = Eu> NF, namely the Minimum Usable Field strength (Eu) 66 dB greater than the Nuisance Field (NF) of 55.7 dB.
RANCANG BANGUN ANTENA MICROSTRIP 900 MHz UNTUK SISTEM GSM Ananta Wahyu P; Ari Endang Jayati; Sri Heranurweni
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 12, No 1 (2014): Desember 2014
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v12i1.775

Abstract

Penelitian ini mengeksplorasi pembuatan antena mikrostrip dengan frekuensi kerja 900 MHz untuk jaringan GSM (Global System For Mobile Communication). Antena mikrostrip berbentuk persegi panjang dengan substrat epoxy fiberglass yang memiliki konstanta dielektrik 4.8. Parameter yang harus diperhatikan dalam merancang adalah pola radiasi antena, gain, VSWR (Voltage Standing Wave Ratio), bandwidth, dan impedansi masukan. Dalam penelitian ini dirancang antena microstrip pada frekuensi 900 MHz. Dengan parameter gain 7,83 dB, VSWR 1,29, bandwidth 10 MHz dan impedansi input 62,57 + j7,01Ω. Simulasi menggunakan perangkat lunak MMANAGAL V.1.20.20.
Kelompok Ternak Bioenergi Di Dukuh Wunut, Desa Tangkisan, Kec.Bayan Kab. Purworejo Jawa Tengah Iswoyo Iswoyo; Harmini Harmini; Sri Heranurweni
Prosiding Konferensi Nasional Pengabdian Kepada Masyarakat dan Corporate Social Responsibility (PKM-CSR) Vol 2 (2019): Peran Perguruan Tinggi dan Dunia Usaha dalam Mempersiapkan Masyarakat Menghadapi Era I
Publisher : Asosiasi Sinergi Pengabdi dan Pemberdaya Indonesia (ASPPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (734.213 KB) | DOI: 10.37695/pkmcsr.v2i0.490

Abstract

Kelompok ternak Bina Lestari terletak di Dukuh Wunut Desa Tangkisan Bayan Purworejo yang terdiri dari 12 Kepala Keluarga dan mempunyai kandang dua tingkat dengan jumlah sapi 18 ekor. Saat ini telah terbangun satu unit biodigester dengan ukuran 8 m3 oleh kelompok ternak sapi Bina Lestari. Biodigester tersebut saat ini hanya dapat dimanfaatkan untuk 7 KK. Berdasarkan hal tersebut perlu dilakukan pengembangan untuk membangun biodigester agar warga yang belum mendapatkan supply biogas dapat teratasi. Permasalahan prioritas yang dihadapi mitra dalam segi sosial, mutu layanan dan kehidupan bermasyarakat adalah masih ada 5 kepala keluarga (KK) yang belum mendapatkan supply biogas untuk memasak sehingga kelima KK masih mengkonsumsi LPG tabung 3 Kg dan juga masih menggunakan kayu bakar. Limbah biodigester dapat dimanfaatkan untuk diolah menjadi pupuk. Solusi yang ditawarkan untuk menyelesaikan permasalahan mitra adalah membangun biodigester tambahan dengan kapasitas 12 m3. Kapasitas tersebut dapat digunakan untuk 12 KK. Limbah dari biodigester diolah menjadi pupuk. Hasil dari pengabdian ini adalah telah terbangunnya biodigester dengan kapasitas 12 m3 untuk kelompok ternak Bina Lestari Dukuh Wunut Desa Tangkisan Bayan, Purworejo. Sejumlah 12 KK telah dapat memanfaatkan bioenergi tersebut. limbah dari bioenergi dimanfaatkan sebagai pupuk yaitu pupuk cair dan pupuk padat yang digunakan untuk memupuk lahan pertanian
VEGETABLE TYPE CLASSIFICATION USING NAIVE BAYES ALGORITHM BASED ON IMAGE PROCESSING Hanny Nurrani; Andi Kurniawan Nugroho; Sri Heranurweni; Eko Supriyanto; Generousdi -
JAICT Vol 7, No 2 (2022)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jaict.v7i2.3762

Abstract

There are so many different varieties of vegetables in Indonesia that the sorting procedure presents difficulties. In an effort to expedite the introduction of smart farming in Indonesia, more agricultural assistance techniques will be created. Utilizing the Naive Bayes algorithm is one way that may be used to advance agriculture in Indonesia. Image processing consists of converting RGB images to grayscale images, segmenting images using the thresholding method, collecting image features based on the HSV average value and object area, and classifying pictures using the Naive Bayes algorithm. This research seeks to use image processing technologies to agricultural products, particularly vegetables. The system is comprised of a single picture captured by a digital camera. There were eight varieties of vegetables employed for the picture data, with a total of eighty consisting of 64 training data and 16 test data. Spinach, green chilies, red chilies, chayote, cucumber, eggplant, tomatoes, and carrots were the vegetables categorized. The categorization findings indicate that 87.5 % of the test values produced using this approach are accurate. This study demonstrates that the Naive Bayes method has a high degree of accuracy for the categorization of vegetables based on image processing. It is anticipated that the findings of this study would promote the implementation of smart farming 4.0 in Indonesia.
Image Classification of Vegetable Quality using Support Vector Machine based on Convolutional Neural Network Hanny Nurrani; Andi Kurniawan Nugroho; Sri Heranurweni
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 7 No 1 (2023): February 2023
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29207/resti.v7i1.4715

Abstract

As part of an effort to develop intelligent agriculture, new methods for enhancing the quality of vegetables are being continually developed. In recent years, the Convolutional Neural Network (CNN) has shown to be the most successful and extensively used approach for identifying the quality of pre-trained vegetables. However, this method is time-consuming due to the scarcity of truly large, significant datasets. Using a pre-trained CNN model as a feature extractor is a straightforward method for utilizing CNNs' capabilities without investing time in training. While, Support Vector Machine (SVM excels at processing data with tiny dimensions and significantly larger instances. SVM more accurately classifies the flatten/vector feature supplied by the CNN fully connected layer with small dimensions. In addition, implementing Data Augmentation (DA) and Weighted Class (WC) for data variety and class imbalance reduction can improve CNN-SVM performance. The research results show highest accuracy during training always achieves 100% across all experimental options. With an average accuracy of 69.66% in the testing process and 92.51% in the prediction process for all data, the experimental findings demonstrate that CNN-SVM outperforms CNN in terms of accuracy performance in all possible experiments, with or without WC and or DA approach.
Analisa Kinerja Multiple Input Multiple Output Jaringan Sensor Nirkabel dengan Demodulasi Terdistribusi Ari Endang Jayati; Sri Heranurweni; M. Sipan
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 3 No 4: November 2014
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (180.384 KB)

Abstract

Wireless Sensor Network has some weaknesses, such as limited power, memory and communication. Sensor is supplied with a very limited power batery. Besides, Wireless Sensor Network should also consider the available bandwidth, range sensor and sensor communication range. The main objective of this study is to analyze the performance of linear demodulation named Zero Forcing (ZF) and Minimum Mean Squared Error (MMSE) in wireless sensor network using Multiple Input and Multiple Output (MIMO) system with Signal to Noise Ratio (SNR) and Bit Error Rate (BER) as the parameter to measure the performance of endurance to noise. The application of ZF and MMSE linear demodulation with MIMO configuration to Wireless Sensor Network is constantly good, the performance of ZF to reach BER 10-3 needed SNR 21 dB, while the performance of MMSE to reach BER 10-3 needed SNR 18 dB.
Co-Authors Agus Supriyanto Ananta Wahyu P Andhika Irawan Andi Kurniawan Andi Kurniawan Nugroho Ari Endang Jayanti, Ari Endang Ari Endang Jayati Azizah, Devi Nur Bagus Eryawan Bangun Marhendra, Vendi Budiani Destyningtias Eko Supriyanto Erwinnanto, Yohan Fahrudin Ahmad Fajri Prasojo Generousdi - Hanny Nurrani Harmini, Harmini Hendra Ady Juliartadi Idris, La Ode Muhamad Iswoyo Iswoyo M. Sipan Minarti, Wahyu Moh Tamam Edy Fitriyan Mukti Dwi Cahyo Muliandhi, Puri Noor Arifin Sipan, M. Supari Supari, Supari Titik Nurhayati Titik Nurhayati Ulfatun Khasanah Yusuf Nurul Hilal