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Analisis Kelayakan Usaha Pembuatan Antenna Transmisi TV Di Jawa Barat Yudhistira, Yudhistira; Prassetiyo, Hendro; Bakar, Abu
REKA INTEGRA Vol 2, No 3 (2014): Edisi Ketujuh
Publisher : REKA INTEGRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (525.889 KB)

Peningkatan jumlah stasiun televisi dan program perluasan jangkauan siaran menjadikan permintaan kebutuhan antenna akan semakin bertambah. Peningkatan permintaan akan antenna tidak diimbangi dengan kurangnya supply yang ada saat ini. Hal tersebut menjadi sebuah peluang untuk mendirikan usaha pembuatan antenna transmisi tv. Dalam mendirikan suatu usaha diperlukan analisis kelayakan usaha, hal yang perlu dianalisis yaitu mengenai aspek pasar, aspek teknis, aspek manajemen sumber daya manusia, aspek legal dan lingkungan, serta aspek finansial. Dengan kapasitas rata-rata 190 unit antenna per tahun menghasilkan Payback Period selama 4 tahun 3 bulan, Net Present Value sebesar Rp. 129.726.531,-, dan Internal Rate of Return sebesar 22,24%. Analisis sensitivitas dilakukan terhadap dua parameter, yaitu penurunan target penjualan dan kenaikan gaji operator mesin untuk menghasilkan nilai Net Present Value sebesar 0. Kata Kunci: Antenna Transmisi TV , Analisis Kelayakan, Investasi Abstract An increase in the number of television stations and broadcast coverage expansion program makes requests for antenna needs to be increased. Increased demand for antenna is not offset by the lack of current supply. It became an opportunity to establish the business of making antenna tv transmission. In setting up an undertaking necessary business, eligibility analysis thing to be analyzed market aspects, namely regarding the technical aspects, the aspect of human resources management environmental aspects, legal and and financial aspects.With capacity average 190 unit antenna per year generating payback period 4 years 3 months, net present value of RP.129.726.531-,and internal rate of return of 22,24%. Sensitive analyze conducted on two paramenter,,that are decrease in sales targets and salary increase machine operators to generate a value Net Present Value of 0. Keywords: Antenna TV Transmission , Feasibility Study, Investment

Improving the Accuracy of Heart Failure Prediction Using the Particle Swarm Optimization Method Yuliandari, Dewi; Yudhistira, Yudhistira; Wuryanto, Anus; Sidik, Sidik; Ayu Sariasih, Findi
Sinkron : jurnal dan penelitian teknik informatika Vol. 8 No. 1 (2024): Articles Research Volume 8 Issue 1, January 2024
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v9i1.13017

Malfunction of the body's organs, heart failure, makes a person and those closest to them feel worried, which will result in the person's death. There are too many deaths caused by this deadly disease every year. The main problem throughout the world is heart disease, the death rate of which is getting higher and higher and is uncontrollable for various parties due to many factors, especially in terms of knowing it early or not being able to predict it accurately. Therefore, the aim of this research on heart failure problems is to improve heart failure predictions with optimal accuracy, namely the neural network method with the particle swarm optimization method. Previously, heart failure prediction research had been carried out using several methods, but here we will increase the accuracy of the methods that have been carried out. After the testing process on the neural network method and after being optimized and getting results from the particle swarm optimization method, the accuracy increased with an increase of 08.35%. As well as increasing AUC results with an increase of 0.067%. From the results of increasing the accuracy of the neural network method, testing the particle swarm optimization method on heart failure disease data can be used as a reference for stakeholders.

Analyzing Public Sentiment Towards BSI Service Disruptions Through X: Naïve Bayes Algorithm Yudhistira, Yudhistira; Talita, Aini Suri
Sinkron : jurnal dan penelitian teknik informatika Vol. 8 No. 3 (2024): Research Artikel Volume 8 Issue 3, July 2024
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v8i3.13729

Disruptions to banking services can negatively affect customer trust and happiness, thus affecting the bank's reputation in the eyes of the public. Analysis of sentiment expressed on social media is very important because it can provide a direct picture of individual perceptions and responses in real time. This research aims to analyze public sentiment towards disruptions in Bank Syariah Indonesia (BSI) services through social media using the Naive Bayes algorithm. Through this analysis, the research seeks to understand the pattern of public responses and perceptions of BSI disruptions and evaluate the performance of the Naive Bayes algorithm in classifying sentiment on related tweet data. The data used came from specific social media platforms, where sentiment analysis was conducted by categorizing the data into positive, negative, and neutral categories. The research findings show that the sentiment analysis of the community towards BSI service disruptions through X social media platforms shows a diverse pattern of responses and perceptions. This finding recorded 525 data points with negative sentiment, 325 data points with neutral sentiment, and 141 data points with positive sentiment. The research also compared the performance of the Naive Bayes algorithm with the Google Cloud Natural Language API, which showed an accuracy rate of 81.03%. This research provides valuable insights for Bank Syariah Indonesia in understanding public perception of BSI services on social media.

Passive magnetic coil design for electromagnetic interference evaluation of axle counters Yoppy, Yoppy; Yudhistira, Yudhistira; Nugroho, Hutomo Wahyu; Trivida, Elvina; Wahyu Wijanarko, Tyas Ari; Bakti, Aditia Nur; Mandaris, Dwi
International Journal of Electrical and Computer Engineering (IJECE) Vol 14, No 1: February 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v14i1.pp166-174

Measurement of magnetic fields near the railway tracks is crucial to ensure compatibility with the operation of axle counters. According to EN 50592 standard, the magnetic field is detected with a passive magnetic coil and an oscilloscope. From previous studies, in general, there has been no in-depth analysis of how the choice of coil winding parameters could affect the coil output voltage, which then affect the measurement sensitivity, in particular the coil design based on the standard and it is applicability for electromagnetic interference (EMI) evaluation of axle counters. Therefore, this paper will explore the design of a passive magnetic coil to obtain the optimum coil output voltage within the frequency range. Simulations showed that for 10-100 kHz and 100 kHz–1.3 MHz range, the optimum number of turns happened at 60-100 and 15-60 turns, respectively. Based on that, two example coils had been built. Simulations and measurements of their frequency response were in good agreement, with a deviation less than 1.0 dB.

Pengembangan Media Pembelajaran Berbasis Android Dengan Menggunakan Aplikasi Apply Pie Pada Mata Pelajaran Instalasi Penerangan Listrik yudhistira, Yudhistira; Vetricia, Damai Linda Gea Vetricia Linda Gea
Jurnal Vokasi Teknik Informatika Vol 2 No 3 (2022)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/javit.v2i3.147

Penelitian ini bertujuan untuk mengetahui kelayakan dan efektivitas pengembangan media berbasis android menggunakan aplikasi Appy Pie pada mata pelajaran instalasi penerangan listrik. Penelitian ini menggunakan metode Research and Development (R&D) dengan prosedur pengembangan yang digunakan mengacu pada model ADDIE yang dikembangkan oleh Dick and Carry (1996) yang meliputi analisis, desain, pengembangan, implementasi dan evaluasi. Subjek penelitian ini adalah siswa kelas XI TITL SMK N 13 Medan. Kelayakan media yang dikembangkan merujuk pada ahli media dengan perolehan nilai 93% dengan kategori “sangat layak”, kelayakan materi oleh ahli materi memperoleh nilai 85% dengan katogori “sangat layak”, dan 93% diperoleh melalui praktisi pembelajaran dengan kategori “sangat layak”. Hasil uji coba produk memproleh respon positif penggunaan media > 65%. Efektivitas produk dari hasil posttest diperoleh nilai sig.2-tailed sebesar 0,009 < 0,05 artinya terdapat perbedaan yang signifikan antara kelas kontrol dan eksperimen. Dari hasil rata-rata posttest kelas ekperimen memperoleh 7,9 dengan peningkatan skor sebesar 2,1 dibandingkan dengan kelas kontrol hanya memperoleh rata-rata posttest sebesar 7,2. Dengan demikian media yang dikembangkan efektif.

UJI AKTIVITAS EKSTRAK ETANOL BUAH LUWINGAN (Ficus hispida L.f) SEBAGAI ANTIDIABETES PADA TIKUS PUTIH JANTAN GALUR WISTAR Wiratma, Dicky Yuswardi; Yudhistira, Yudhistira; Marpaung, Jon Kenedy
Jurnal Farmanesia Vol 12 No 1 (2025): Jurnal Farmanesia
Publisher : UNIVERSITAS SARI MUTIARA INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/jf.v12i1.5934

Latar belakang: Pengetahuan tentang tumbuhan obat merupakan budaya bangsa yang diwariskan secara turun temurun. Obat tradisional dalam bahan kimia alam mengandung senyawa-senyawa yang dikenal dengan metabolit sekunder. Senyawa-senyawa metabolit sekunder tersebut memiliki khasiat yang berbeda-beda, sehingga mendorong pentingnya penggalian sumber obat-obat tradisional dari bahan alam salah satunya dari tanaman Luwingan (Ficus hispida L.f). Tujuan: Untuk mengetahui apakah buah Luwingan (Ficus hispida L.f) memiliki aktivitas serta berapa konsentrasi yang efektif sebagai antidiabetes. Metode: Buah luwingan akan diekstraksi dengan menggunakan pelarut etanol. Menggunakan metode eksperimental dengan desain penelitian purposive sampling. Tikus di induksi aloksn dengan dosis 150mg kg/BB secara intraperitoneal. Sampel darah diukur dengan strip tes darah gluco Dr dan hasil kadar glukosa darah dianalisis dengan one way ANOVA. Hasil: Hasil uji pemberian ekstrak etanol buah luwingan (Ficus hispida L.f) memiliki aktivitas antidiabetes pada tikus putih jantan galur wistar yang di induksi aloksan dengan variasi konsentrasi 20% dapat menurunkan KGD 240,8 mg/dL, 40% menurunkan KGD 246 mg/dL dan 60% menurunkan KGD 248,4 mg/dL. Simpulan: Ekstrak etanol buah luwingan dapat menjadi alternatif terapi karena efektivitasnya dalam menurunkan kadar gula darah. Konsentrasi 60% memiliki aktivitas penurunan kadar glukosa darah yang paling baik jika dibandingkan dengan 3 konsentrasi yang di uji. Ekstrak etanol buah luwingan ini memiliki efektivitas yang mendekati glibenklamid sebagai kontrol positif.

Pengaruh Penggunaan Aplikasi Belanja Lokal Negara Studi Terhadap Adaptasi Mahasiswa Indonesia di Negara Tujuan Yudhistira, Yudhistira; Hutagalung, Maclaurin
Indo-MathEdu Intellectuals Journal Vol. 6 No. 4 (2025): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v6i4.3809

This study aims to analyze the impact of using local shopping applications in the host country on the adaptation of Indonesian students studying abroad. The main focus is directed towards three dimensions of adaptation: social, cultural, and psychological. The use of local shopping applications such as Amazon, Taobao, Shopee, and similar ones has become part of the daily lives of students and has the potential to play an important role in supporting the adaptation process. The research method employed is associative quantitative, using a survey approach through online questionnaires. Respondents were Indonesian students in various higher education destination countries who had used local shopping applications for at least three months. Data analysis was conducted using multiple linear regression to test the relationship between the use of shopping applications and the three adaptation dimensions. The findings indicate that the use of local shopping applications has a significant impact on all three aspects of adaptation. In the social aspect, these applications facilitate indirect interaction with elements of the local society, broaden the understanding of service norms, and enhance the sense of social connectedness. From a cultural standpoint, the applications serve as digital showcases that expose students to local symbols, products, and cultural practices, thus enriching the acculturation process.

THE RIGHT STEPS TOWARDS GRADUATION: NB-PSO SMART COMBINATION FOR STUDENT GRADUATION PREDICTION Kahfi, Ahmad Hafidzul; Prihatin, Titin; Yudhistira, Yudhistira; Sudradjat, Adjat; Wijaya, Ganda
Jurnal Teknik Informatika (Jutif) Vol. 5 No. 2 (2024): JUTIF Volume 5, Number 2, April 2024
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jutif.2024.5.2.1889

The current digital era demands a more innovative approach in predicting student campuses considering that campuses are not only important for students but also for lecturers, student guardians and higher education institutions. Previous studies have used various machine learning methods such as Decision Trees, Neural Networks, Support Vector Machines, etc. in these predictions. The problem that occurs is that even though various machine learning methods have been used, there are still limitations in the accuracy and efficiency of predicting student admissions, The problem in question can be given a real example of a case that occurred. So with this problem the aim is to develop a more effective methodology in predicting student permits, with recommendations from an intelligent combination of two computational techniques Naive Bayes (NB) and Particle Swarm Optimization (PSO). This research methodology includes data collection, NB model development and model partnership with PSO. Student graduation data is used in model testing with evaluation based on metrics such as accuracy and Area Under the Curve (AUC). The results showed a significant increase in accuracy to 86.94% from 83.30% and AUC value from 0.860 to 0.884 when using the combination of NB and PSO compared to NB without either. The integration of NB and PSO has been proven to increase effectiveness in classifying student graduation prediction cases. This research opens up opportunities for the practical application of technology in the education sector and emphasizes the importance of using effective optimization and feature selection techniques in improving prediction results.

INOVASI DIGITAL DAN TEKNOLOGI UNTUK PEMBANGUNAN BERKELANJUTAN DI DESA KUTA MBELIN Efendi, Syahril; Nurahmadi, Fauzan; Manik, Fuzy Yustika; Seniman, Seniman; Harumy, T. Henny Febriana; Jaya, Ivan; Absah, Yeni; Syahputra, Muhammad Romi; Hastuti, Liana Dwi Sri; Nainggolan, Pauzi Ibrahim; Herianto, Tulus Joseph; Ginting, Dewi Sartika Br; Yudhistira, Yudhistira
Jurnal Pemberdayaan Sosial dan Teknologi Masyarakat Vol 5, No 2 (2025): Desember 2025
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jpstm.v5i2.5154

Abstract: Kuta Mbelin Village in STM Hulu District, Deli Serdang Regency, utilizes digital technology to accelerate sustainable development through its official village website, kutambelin.com. This website plays a crucial role in promoting the village's potential, particularly in the agriculture and nature tourism sectors, which support the achievement of SDG 8 (Decent Work and Economic Growth). Furthermore, kutambelin.com highlights sustainable environmental management programs relevant to SDG 12 (Responsible Consumption and Production), and supports digital infrastructure innovation related to SDG 9 (Innovation, Infrastructure, and Industrialization). Keywords: Kuta Mbelin Village, digital innovation, sustainable development, SDGs, village website, local promotion, agriculture, tourism. Abstrak: Desa Kuta Mbelin di Kecamatan STM Hulu, Kabupaten Deli Serdang, memanfaatkan teknologi digital untuk mempercepat pembangunan berkelanjutan melalui situs web resmi desa, kutambelin.com. Website ini memainkan peran penting dalam mempromosikan potensi desa, khususnya di sektor pertanian dan pariwisata alam, yang mendukung pencapaian SDG 8 (Pekerjaan Layak dan Pertumbuhan Ekonomi). Selain itu, kutambelin.com menyoroti program pengelolaan lingkungan yang berkelanjutan, relevan dengan SDG 12 (Konsumsi dan Produksi yang Bertanggung Jawab), serta mendukung inovasi infrastruktur digital yang terkait dengan SDG 9 (Inovasi, Infrastruktur, dan Industrialisasi). Kata Kunci : Desa Kuta Mbelin, inovasi digital, pembangunan berkelanjutan, SDGs, website desa, promosi lokal, pertanian, pariwisata.

UJI AKTIVITAS EKSTRAK ETANOL BUAH LUWINGAN (Ficus hispida L.f) SEBAGAI ANTIDIABETES PADA TIKUS PUTIH JANTAN GALUR WISTAR Wiratma, Dicky Yuswardi; Yudhistira, Yudhistira; Marpaung, Jon Kenedy
Jurnal Farmanesia Vol 12 No 1 (2025): Jurnal Farmanesia
Publisher : UNIVERSITAS SARI MUTIARA INDONESIA

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

Latar belakang: Pengetahuan tentang tumbuhan obat merupakan budaya bangsa yang diwariskan secara turun temurun. Obat tradisional dalam bahan kimia alam mengandung senyawa-senyawa yang dikenal dengan metabolit sekunder. Senyawa-senyawa metabolit sekunder tersebut memiliki khasiat yang berbeda-beda, sehingga mendorong pentingnya penggalian sumber obat-obat tradisional dari bahan alam salah satunya dari tanaman Luwingan (Ficus hispida L.f). Tujuan: Untuk mengetahui apakah buah Luwingan (Ficus hispida L.f) memiliki aktivitas serta berapa konsentrasi yang efektif sebagai antidiabetes. Metode: Buah luwingan akan diekstraksi dengan menggunakan pelarut etanol. Menggunakan metode eksperimental dengan desain penelitian purposive sampling. Tikus di induksi aloksn dengan dosis 150mg kg/BB secara intraperitoneal. Sampel darah diukur dengan strip tes darah gluco Dr dan hasil kadar glukosa darah dianalisis dengan one way ANOVA. Hasil: Hasil uji pemberian ekstrak etanol buah luwingan (Ficus hispida L.f) memiliki aktivitas antidiabetes pada tikus putih jantan galur wistar yang di induksi aloksan dengan variasi konsentrasi 20% dapat menurunkan KGD 240,8 mg/dL, 40% menurunkan KGD 246 mg/dL dan 60% menurunkan KGD 248,4 mg/dL. Simpulan: Ekstrak etanol buah luwingan dapat menjadi alternatif terapi karena efektivitasnya dalam menurunkan kadar gula darah. Konsentrasi 60% memiliki aktivitas penurunan kadar glukosa darah yang paling baik jika dibandingkan dengan 3 konsentrasi yang di uji. Ekstrak etanol buah luwingan ini memiliki efektivitas yang mendekati glibenklamid sebagai kontrol positif.

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