Jurnal Ilmiah Teknologi Infomasi Terapan https://journal.widyatama.ac.id/index.php/jitter <p>Jurnal Ilmiah Teknologi Infomasi Terapan (JITTER) adalah jurnal yang diterbikan oleh Fakultas Teknik Universitas Widyatama.</p> Universitas Widyatama en-US Jurnal Ilmiah Teknologi Infomasi Terapan 2686-0333 <p>Submission of a manuscript implies that the submitted work has not been published before (except as part of a thesis or report, or abstract); that it is not under consideration for publication elsewhere; that its publication has been approved by all co-authors. If and when the manuscript is accepted for publication, the author(s) still hold the copyright and retain publishing rights without restrictions. Authors or others are allowed to multiply the article as long as not for commercial purposes. For the new invention, authors are suggested to manage its patent before published.&nbsp;<span id="m_4863372954928520277yui_3_16_0_ym19_1_1499518718599_9240">The license type is&nbsp;</span><strong id="m_4863372954928520277yui_3_16_0_ym19_1_1499518718599_9241"><a href="https://creativecommons.org/licenses/by-sa/4.0/">CC-BY-SA 4.0.</a></strong></p> PENGGUNAAN REINFORCED CONCRETE SLABS UNTUK MENGURANGI PENURUNAN SESAAT PONDASI TIANG PANCANG PADA TANAH TIDAK KERAS https://journal.widyatama.ac.id/index.php/jitter/article/view/2194 <p>Kejadian penurunan sesaat pada pilar-pilar struktur jembatan tipe pelat tiang, pada saat kendaraan melintasi jembatan, merupakan pengaruh dari pondasi pegas. Efek ini umumnya terjadi karena pondasi tidak berada pada tanah yang keras. Penurunan sesaat tersebut menyebabkan pelebaran momen di ujung dermaga sehingga mengakibatkan peristiwa retak struktur, seperti yang terjadi pada salah satu ruas tol di Kebon Jeruk, Jakarta Barat. Pilar struktur jembatan type pile slab yang pondasinya berada pada tanah yang tidak keras akan mengakibatkan pilar tersebut mengalami pergerakan vertikal. Pergerakan pada pilar dapat menyebabkan keretakan pada struktur <em>pier head</em>, selanjutnya pergerakan pada <em>pier head</em> juga dapat menyebabakan kerusakan pada lantai. Dalam penelitian ini dilakukan evaluasi terhadap perkuatan dengan tujuan mengetahui kinerja perkuatan pada pondasi. Salah satu cara untuk mengatasi penurunan sesaat pada pondasi yang berfungsi sebagai pilar adalah dengan mengurangi penurunan sementara dengan cara mendistribusikan beban pada tanah di sekitar pondasi dengan menggunakan pelat beton bertulang. Hasil analisis teoritis, penanganan menggunakan pelat bertulang dengan luas 2,5 x 2,5 meter, dengan pemasangan sedalam 0,5 meter dari permukaan tanah, mampu meredam pergerakan vertikal sebesar 73,68% (penurunan sebelum perkuatan sebesar 0,76 mm, dan setelah perkuatan sebesar 0,20 mm). Sedangkan dari hasil uji lapangan dengan penanganan seperti diatas mampu menurunkan penurunan sesaat sebesar 68,75%. (penurunan sebelum perkuatan sebesar 0,80 mm, dan setelah perkuatan sebesar 0,25 mm)</p> Rikki Sofyan Rizal Sanju Yedo Oksa Andi Indianto Sukarman Erlina Yanuarini Copyright (c) 2024 Rikki Sofyan Rizal, Sanju Yedo Oksa, Andi Indianto, Sukarman, Erlina Yanuarini http://creativecommons.org/licenses/by-nc-sa/4.0 2024-08-18 2024-08-18 10 3 10.33197/jitter.vol10.iss3.2024.2194 Design of an Automatic Clothes Drying System Based on Internet of Things (IoT) Technology https://journal.widyatama.ac.id/index.php/jitter/article/view/2010 <p><em>Drying clothes is an activity that is generally carried out outdoors using sunlight to speed up the drying of clothes. Some people who do a lot of activities outside the home often leave their clothes hanging all day. Along with the erratic changes in seasons, sudden rain can cause clothes that have been dried in the sun to become wet again due to exposure to rainwater. To overcome this problem, automatic clothes drying system based on Internet of Things (IoT) technology was created using LDR sensors and rain sensors. This system uses the Blynk application so that it can be monitored and controlled directly. Wemos D1 R32 is used as a communication medium between the device and the Blynk application. The results of this research are that the clothesline can enter the room when the LDR sensor detects that it is dark or when it is raining and when the user orders the clothesline to enter via the Blynk application</em></p> Mutiara Majid Resa Pramudita Copyright (c) 2024 Mutiara Majid, Resa Pramudita http://creativecommons.org/licenses/by-nc-sa/4.0 2024-08-18 2024-08-18 10 3 10.33197/jitter.vol10.iss3.2024.2010 A digital document tracker on a file storage system uses a combination of the SHA3-512 and RSA algorithms to safeguard the authenticity of document data https://journal.widyatama.ac.id/index.php/jitter/article/view/2200 <p>The aim of this research is to analyze the security <br>of digital signature schemes, so that the integrity of <br>the data in the signature document is better <br>maintained and the recipient is trusted to have come <br>from a legitimate sender. The rapid development of <br>technology today means that all signed physical <br>documents have turned into softfile documents with <br>digital signatures. The process of creating a digital <br>signature begins with creating a public key and a <br>private key. A public key is generated and published <br>to verify the signature and calculate the hash value of <br>the received document. Several studies have used the <br>concept of algorithms in cryptography, namely the <br>RSA cryptographic algorithm, but it still has <br>shortcomings in that it cannot be proven whether the <br>document received by the recipient is a document <br>from a legitimate sender and there have been no <br>changes to the document. In this research the author <br>tries to perfect previous research where users can <br>validate the authenticity of documents and believe <br>that the sender of the document is a legitimate sender <br>with a combination of the RSA and SHA3-512 <br>algorithms. The document used in this research has <br>.pdf extension. Mitm attack testing resulted in the <br>conclusion that the strength of the secret key was the <br>basis for the scheme being built. The digital signature <br>scheme that is built can validate the authenticity of <br>documents received by the recipient and prove that <br>the document was sent by a legitimate sender. Time <br>for document validation and signature depends on the <br>size of the uploaded pdf file</p> asep rizal nurjaman Copyright (c) 2024 asep rizal nurjaman http://creativecommons.org/licenses/by-nc-sa/4.0 2024-08-18 2024-08-18 10 3 10.33197/jitter.vol10.iss3.2024.2200 UI/UX DESIGN OF GENERAL MEDICAL CHECK-UP FOR X MINING COMPANY USING SURVEY AND INTERVIEW METHODS https://journal.widyatama.ac.id/index.php/jitter/article/view/2208 <p>The mining industry, a crucial component of the world economy, is inextricably <br>linked to occupational safety hazards and serious health dangers. Effective work safety <br>measures are critical in sustaining worker health, one of which is routine Medical CheckUp (MCU). Mining Company X's MCU installation has been completed, but operating <br>conditions and reporting remain manual, and inspection procedures and job eligibility <br>assessments are inconsistently implemented. As a result, it is vital to digitize the MCU <br>process using the General Medical Check-Up (GeMCU) system. This final project <br>implements the survey and interview method, with testing conducted utilizing System <br>Usability Scale (SUS) and User Acceptance Test (UAT), to assess user usability and <br>satisfaction. The test findings showed that the average score of the System Usability Scale <br>(SUS) test was 75.25 with the "Good" category, and the average score of the User <br>Acceptance Test (UAT) test in each element was 90% for the design aspect, 84% for the <br>user-friendliness aspect, and 82% for the efficiency aspect. Thus, the results of this test can <br>be used as a basis for the feasibility of GeMCU UI/UX design by mining company X.</p> Eka Samsiati Putri Firma Syahrian Copyright (c) 2024 Eka Samsiati Putri, Firma Syahrian http://creativecommons.org/licenses/by-nc-sa/4.0 2024-08-18 2024-08-18 10 3 10.33197/jitter.vol10.iss3.2024.2208 Fuzzy Inference System For Recommendation Of Student's Depression Level https://journal.widyatama.ac.id/index.php/jitter/article/view/2187 <p class="western" style="text-indent: 0in;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><em><span style="font-variant: normal;"><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-weight: normal;"><span style="background: transparent;">Depression is common in modern society and can cause various kinds of problems, for example behavioral, social and psychological problems. Sanggar Kegiatan Belajar 26 Bintaro is a non-formal educational institution that does not yet have counseling teachers like other formal schools, so tools are needed to carry out early detection of students' depression levels in the form of a depression level recommendation system whether at normal,</span></span></span></span></span></em> <em><span style="font-variant: normal;"><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-weight: normal;"><span style="background: transparent;">mild, moderate or severe levels which is useful for Teacher to provide the right solution. The method used in this research is fuzzy logic with seven (7) input variables sourced from the Depression Anxiety Stress Scale-21 (DASS-21) questionnaire and four output variables, namely normal mild level depression, moderate level depression and severe level depression. The programming language used is Python using the Simpful library. The results of the research are measurements using DASS-21 for depression. The recommendation results are the same as using the fuzzy logic method, so that fuzzy logic can be used to make recommendations for early detection of students' depression levels.</span></span></span></span></span></em></span></span></p> Nawindah Nawindah Copyright (c) 2024 Nawindah Nawindah http://creativecommons.org/licenses/by-nc-sa/4.0 2024-08-18 2024-08-18 10 3 10.33197/jitter.vol10.iss3.2024.2187 Daftar Isi, Halaman Dewan Redaksi dan Halaman Pengantar https://journal.widyatama.ac.id/index.php/jitter/article/view/2280 <p>Daftar Isi, Halaman Dewan Redaksi dan Halaman Pengantar</p> Raden Herdian Bayu Copyright (c) 2024 http://creativecommons.org/licenses/by-nc-sa/4.0 2024-08-18 2024-08-18 10 3