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All Journal Department of Naval Architecture Journal of Applied Health Management and Technology JATI (Jurnal Mahasiswa Teknik Informatika) Jurnal Teknologi Komputer dan Informatika
Erwin Darmawan
Program Studi Teknik Perkapalan Fakultas Teknik Universitas Diponegoro
Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Health Professions

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STUDI PERANCANGAN GLASS BOTTOM CATAMARAN UNTUK MENUNJANG OBJEK WISATA DIKAWASAN ANAK GUNUNG KRAKATAU Darmawan, Erwin; Adietya, Berlian Arswendo; Budiarto, Untung
Jurnal Teknik Perkapalan Vol 2, No 3 (2014): Agustus
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (242.228 KB)

Abstract

Krakatau adalah kepulauan vulkanik yang masih aktif dan berada di Selat Sunda antara pulau Jawa dan Sumatra. Nama ini pernah disematkan pada satu puncak gunung berapi di sana (Gunung Krakatau) yang sirna karena letusannya sendiri pada tanggal 26-27 Agustus 1883. Selain pesona letusan gunungnya,di sekitar perairan Anak Gunung Krakatau terdapat pula pesona keindahan Alam bawah lautnya.Penelitian ini dilaksanakan dengan tujuan  untuk merancang kapal sebagai pengembembangan pariwisata di objek wisata Anak Gunung Krakatau dengan memperhitungkan ukuran utama, membuat rencana garis, rencana umum dan analisa hidrostatik, stabilitas kapal dan analisis olah gerak kapal. Serta pemilihan peralatan penyelamatan dan motor induk berdasarkan hasil perhitungan daya motor sesuai dengan hambatan yang dialami kapal.Metodelogi yang digunakan dalam penelitian ini mencakup studi litelatur, studi lapangan, lalu pengolahan data.Hasil perancangan kapal katamaran pariwisata (Mv. Krakatau)ini didapatkan hasilLOA: 20.50 m LWL: 20.1 m, B: 8.50 m, T: 1.55 m, H: 2.9 m. Dan dari perhitungan Hidrostatik,didapat displacement  95.60 ton , Cb: 0.565, LCB: 10 936 m. Dan hasil dari perhitungan stabilitas, yang hasilnya mengindikasikan bahwa kapal mempunyai stabilitas yang stabil, karena titik M selalu berada diatas titik G di segala kondisi. Pada tinjauan olah gerak kapal pariwisata ini memiliki olah gerak yang baik terbukti tidak terjadi deck weaknes. Kemudian pada gambar rencana umum,kapal mempunyai space yang cukup untuk menampung penumpang lebih banyak,peralatan keselamatan,peralatan navigasi dan komunikasi. Untuk hasil analisa kekuatan glass bottom setelah mengalami uji tekan yang mempunyai nilai maksimal terhadap tekanan air sebersar 10 kN,dengan mengalami deformasi sebesar 7 cm. Sedangkan untuk kekuatan glass bottom setelah mengalami uji tarik dengan beban 7 kN,mempunyai nilai deformasi sebesar 0,09 cm
PROTOTYPE PALANG PARKIR OTOMATIS SATU PINTU MENGGUNAKAN SENSOR ULTRASONIK BERBASIS ARDUINO UNO Darmawan, Erwin
Jurnal Teknologi Komputer dan Informatika Vol 3 No 1 (2024): Jurnal Teknologi Komputer dan Informatika (TEKOMIN)
Publisher : LPPM Politeknik Pajajaran ICB Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59820/tekomin.v3i1.265

Abstract

The use of ultrasonic sensors is widely used in automation systems. Its uses include detecting an object, measuring the distance of an object and calculating the number of an object and so on. In making this tool, an ultrasonic sensor is used to detect the presence of an object in the form of a vehicle, the reading results are forwarded to the Arduino microcontroller for processing, then forwarded by the Arduino Uno microcontroller to the Servo Motor which functions to open and close the parking gate. This prototype uses a parking barrier for vehicle entry and exit so it uses two ultrasonic sensors, one servo motor and an Arduino Uno microcontroller.
DESIGN AND CONSTRUCTION OF ORBITA PROTECTION EQUIPMENT FOR PANORAMIC EXAMINATION Indah Puspita, Mega; S.Si, M.Pd, Bagus Abimanyu; Handoko, Bagus Dwi; Wibowo, Ardi Soesilo; Darmawan, Erwin; isnoviasih, Susi tri; Fitriana, Ella
Journal of Applied Health Management and Technology Vol 6, No 2 (2024): October 2024
Publisher : Politeknik Kesehatan Kementerian Kesehatan Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31983/jahmt.v6i2.11607

Abstract

Panoramic dental radiography uses X-rays to produce radiographs of the jaw and facial structures, from the teeth to the TMJ and the entire dental arch. Exposure to X-rays during an examination can be problematic because sensitive areas such as the thyroid gland and eyes adjacent to tooth structure also receive radiation exposure. Patients in panoramic examinations do not use eye radiation protection equipment for the orbit, namely Pb glasses, while the eyes are close to the dental arch which can receive radiation exposure, so eye radiation protection equipment is needed in panoramic examinations for patient safety. The aim of the research is to determine the function test and performance test of the Eye Radiation Protection Device.This type of research is quantitative research with an experimental approach. The research sample was 3 patients with variations of 3 kV: 70, 76, and 86 kV with a setting of 10 mA. The radiation dose to the eye was measured using a phantom and pocket dosimeter before and after using the radiation protection design tool, then looking for the average, difference and percentage and carrying out the Kruskal-Wallis spss test.The results of the three radiographs showed no artifacts, the exposure factor before using the device was 70 kV = 0.08 mSv, 76 kV = 0.17, 86 kV = 0.27 mSv while the radiation dose received after using the device with an exposure factor of 70 kV = 0 mSv, 76 kV = 0.86 kV = 0.003 mSv, while from the Kruskall-walls statistical test pre-test and post test kV 70 shows a significant value of 0.034 0.05, kV 76 does not show a significant value of 0.121 0.05, kV 86 shows a significant value of 0.043 0.05. The design of this eye radiation protection device has succeeded in reducing or reducing the radiation dose around the eyes by up to 100%. Meanwhile, the level of feasibility of the tool has a respondent score of 80%. Suggestions for using a thermoluminescence radiation measuring instrument (TLD) with smaller units, namely µSv.
PEMANFAATAN LSTM UNTUK MENGANALISIS SENTIMEN PENGGUNA TWITTER: STUDI KASUS PADA TWEET BERITA TERKINI Darmawan, Erwin; Hasan, Mhd Arief; Irsando, Irsando; Rahmawati, Ningsi; Kurniawan, Agung; Kurniawan, Veby
JATI (Jurnal Mahasiswa Teknik Informatika) Vol. 9 No. 2 (2025): JATI Vol. 9 No. 2
Publisher : Institut Teknologi Nasional Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jati.v9i2.13194

Abstract

Analisis sentimen terhadap berita terkini di platform Twitter menjadi penting untuk memahami dampak informasi terhadap persepsi pengguna. Penelitian ini memanfaatkan Long Short-Term Memory (LSTM) guna menganalisis sentimen pengguna Twitter terhadap tweet berita terkini, dengan tujuan melatih model prediksi sentimen (positif/negatif) sekaligus mengevaluasi pengaruh berita terhadap respons pengguna. Metode yang digunakan melibatkan dataset sebesar 123.218 tweet (75.482 positif dan 47.736 negatif) untuk pelatihan model LSTM, dilengkapi analisis distribusi panjang teks (rata-rata 22,36 karakter untuk sentimen positif dan 23,08 karakter untuk negatif). Evaluasi performa mencakup akurasi, presisi, recall, F1-Score, serta pemeriksaan overfitting melalui grafik akurasi dan loss. Hasil pengujian menunjukkan model mencapai akurasi 91,52%, dengan presisi 91,75%, recall 91,27%, dan F1-Score 91,51%. Klasifikasi berhasil mengidentifikasi 416 tweet positif (True Positive) dan 499 tweet negatif (True Negative), dengan kesalahan 37 False Positive dan 40 False Negative. Grafik akurasi dan loss membuktikan model tidak mengalami overfitting, ditunjukkan oleh konsistensi performa pada data pelatihan dan validasi. Penelitian ini menyimpulkan bahwa LSTM efektif sebagai alat analisis sentimen di Twitter, terutama dalam mengungkap hubungan antara berita terkini dan dinamika sentimen pengguna.
PENGEMBANGAN APLIKASI VENDING TOKEN KWH METER PRABAYAR UNTUK MENINGKATKAN EFISIENSI PENGELOLAAN LISTRIK DI APARTEMEN DAN PERUMAHAN Sujana, Nana; Darmawan, Erwin; Sururi, Sururi
Jurnal Teknologi Komputer dan Informatika Vol 3 No 2 (2025): Jurnal Teknologi Komputer dan Informatika (TEKOMIN)
Publisher : LPPM Politeknik Pajajaran ICB Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59820/tekomin.v3i2.349

Abstract

Efficient electricity management remains one of the primary challenges in operating modern apartments and residential complexes. The prepaid KWH meter system offers an effective solution by enabling residents to monitor and control their electricity consumption independently. This study aims to develop a Prepaid KWH Meter Token Vending Application to enhance electricity management efficiency in such environments. The application is designed to help property managers generate, distribute, and monitor electricity tokens accurately and in an integrated manner. The research methodology includes five main stages: (1) Needs analysis, conducted through interviews and direct observation to identify problems and system requirements; (2) System design, including software architecture, user interface (UI/UX), and database design; (3) Web-based application development using the CodeIgniter framework and PHP; (4) Functionality test of the application was conducted using black box testing and User Acceptance Testing (UAT) to gather user feedback; and (5) Performance evaluation to measure the efficiency improvements achieved through the application. The testing results show that the application can deliver tokens quickly and accurately, supporting effective electricity monitoring by management. This application is expected to improve operational efficiency, optimize electricity costs, and enhance comfort for residents
PROTOTYPE PINTU OTOMATIS MENGGUNAKAN SENSOR ULTRASONIK BERBASIS ARDUINO UNO Darmawan, Erwin
Jurnal Teknologi Komputer dan Informatika Vol 4 No 1 (2025): Jurnal Teknologi Komputer dan Informatika (TEKOMIN)
Publisher : LPPM Politeknik Pajajaran ICB Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59820/tekomin.v4i1.416

Abstract

The development of automation systems continues to increase every year. One of them is the automation system on automatic doors. The use of human power in opening and closing the room door can be done automatically. Opening and closing the door can be done using electronic devices, making it easier to implement. In making this prototype, three main components are used, namely Ultrasonic Sensors, Arduino Uno Microcontrollers and Actuators in the form of servo motors. Ultrasonic sensors are used to detect the presence of humans who are about to go to the door, Servo Motors are used to open and close the door and the Microcontroller functions to process signals from ultrasonic sensors and provide output signals to the actuator. From the results of eight tests, In the entrance direction test, there were two failures out of eight tests.
Co-Authors Agung Kurniawan Ardi Soesilo Wibowo, Ardi Soesilo Bagus Dwi Handoko, Bagus Dwi Berlian Arswendo Adietya Fitriana, Ella Indah Puspita, Mega Irsando, Irsando Kurniawan, Veby Mhd. Arief Hasan, Mhd. Arief Rahmawati, Ningsi S.Si, M.Pd, Bagus Abimanyu Sujana, Nana Sururi Sururi, Sururi Susi Tri Isnoviasih Untung Budiarto