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Ahmad Tri Hidayat / Suhirman
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ijets@uty.ac.id
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+6285647229564
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ijets@uty.ac.id
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Universitas Teknologi Yogyakarta - Kampus 1. Jalan siliwangi, Jombor, Sleman, D.I. Yogyakarta
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International Journal of Engineering, Technology and Natural Sciences (IJETS)
Published by Universitas Teknologi Yogyakarta
ISSN : -     EISSN : 26853191     DOI : -
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Industrial & Manufacturing Engineering
Journal IJETS concern in publishing the original research articles, review articles from contributors, and the current issues related to engineering, technology and natural sciences. The main objective of IJETS is to provide a platform for the international scholars, academicians and researchers.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 10 Documents
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Search results for , issue "Vol 5 No 1 (2023): International Journal of Engineering, Technology and Natural Sciences" : 10 Documents clear
Web GIS of Tourism: Voyage and Forecast Beri Noviansyah; Cholid Fauzi; Akhmad Bakhrun; Lena Lestary
Jurnal Internasional Teknik, Teknologi dan Ilmu Pengetahuan Alam Vol 5 No 1 (2023): International Journal of Engineering, Technology and Natural Sciences
Publisher : University of Technology Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46923/ijets.v5i1.189

Abstract

Web GIS is a kind of distributed information system, which consists of a client and a server, where the server is the GIS server and the client is a web application, desktop application, or mobile application. With the rapid development of technology, increasingly mature GIS technology has been applied in various fields, one of which is tourism. By using a web GIS, reviews related to a tourism object, and tourist locations in a particular area can be easily presented on a website. By utilizing this geographic information system, the potential of tourist attractions and public facilities can be mapped to the maximum, so that tourists can find a place more efficiently and not take long. This study aims to find out the further study the tourism GIS web research over the last 3 years. This study uses the Systematic Literature Review (SLR) method where the search for the required papers comes from an electronic database obtained using the Vos Viewer and Publish or Perish software
Digital Watermarking Implementation Of Digital Watermarking On Images Using The Least Significant Bit Method Intan Setiawati; M. Thoni Hermanto; EIH Ujianto
Jurnal Internasional Teknik, Teknologi dan Ilmu Pengetahuan Alam Vol 5 No 1 (2023): International Journal of Engineering, Technology and Natural Sciences
Publisher : University of Technology Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46923/ijets.v5i1.191

Abstract

The ease of accessing the internet in this modern era has led to illegal crimes, especially data copying, data distribution and abuse of intellectual property rights. From these problems emerged a method of securing data and information, namely watermark. Watermark is used for data security techniques, both for copyright protection and digital signatures in the visible and invisible realms. One of the data security techniques used here is to use the least significant bit (LSB) method. This method is used for data security or images that contain watermarks, for example on currency there is usually a logo to distinguish real and fake currencies. This study uses nine host images taken from the https://www.kaggle.com/datasets/felicepollano/watermarked-not-watermarked-images dataset with different sizes, namely 513 x 513 pixels, 488 x 350 pixels, 467 x 350 pixels, 500 x 333 pixels, 512 x 301 pixels, 490 x 350 pixels, 500 x 332 pixels, 400 x 266 pixels, and 500 x 308 pixels. As for the label image, it uses the uty logo which has a size of 50 x 50 pixels, 80 x 80 pixels, and 124 x 124 pixels. From the results of the watermark test that has been carried out using the LSB method, the average PNSR value is 65 dB, so it can be concluded that the watermark research using the LSB method gets pretty good image results and can be used for data security. Keywords: Watermark, Least Significant Bit, Peak Signal to Noise Ratio (PNSR)
The Overview of Safety Sign Supporting Road Area PT Angkasa Pura I Syamsudin Noor Banjarbaru Airport in 2022 Mahda Halimah; Madschen Sia Mei Ol Siska Selvija Tambun
Jurnal Internasional Teknik, Teknologi dan Ilmu Pengetahuan Alam Vol 5 No 1 (2023): International Journal of Engineering, Technology and Natural Sciences
Publisher : University of Technology Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46923/ijets.v5i1.196

Abstract

Abstract Safety signs are useful equipment to help protect the safety and health of workers and visitors while in the work environment. Safety signs can be useful for providing attention or warning of an alert attitude towards dangers that are invisible to the eye or warning of caution against actions that are not allowed. The purpose of this study is to find out how the description of the safety sign in the supporting road area of PT. Angkasa Pura I Syamsudin Noor Banjarbaru Airport. The type of research used is a descriptive research method. The method of data collection is carried out by direct observation with the Unit Safety Management System and Occopational Safety Health (SMS & OSH) and for the presentation of data, which is carried out using tables and accompanied by explanations. The results of this study show that in the parking area there are no signs for exit directions. In the front area of the administrative office building and in the mosque area, there are no signs for entry and exit signs. Meanwhile, in the cargo building area, the access road to get in and out of the box car is only one lane. It is recommended that the unit concerned should check further regarding safety signs and signs located in the supporting road area of Syamsudin Noor Airport. The relevant unit should be able to propose safety signs and related signs proposed by researchers for the safety and comfort of airport visitors in the area around the supporting road of Syamsudin Noor Banjarbaru Airport.
Designing a Human Resources Performance System in a Company Using the Analytical Hierarchy Process (AHP) Method Heru Winarno; Syamsudin; Ade Riezky
Jurnal Internasional Teknik, Teknologi dan Ilmu Pengetahuan Alam Vol 5 No 1 (2023): International Journal of Engineering, Technology and Natural Sciences
Publisher : University of Technology Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46923/ijets.v5i1.197

Abstract

PT Melinia Nusa Wisata is a company engaged in the field of travel tourism services. As a result of problems from the human factor, namely delays in attendance in the field, the company's scheduled travel departures are inappropriate. This study aims to analyze how to improve the human resource performance system from the three criteria and three alternatives by using the Analytical Hierarchy Process (AHP) method with the help of Expert Choice software. The nature of this research is qualitative descriptive and exploratory research. The results of the study obtained the weight of each criterion, namely on work motivation by 26.6%, work discipline by 24.4%, work skills by 46%, and the alternative is an increase in welfare by 21.6%, an increase in human resource training 44.7%, an increase in facilities 33.7%. These results identify the highest weight, namely work skills and human resource training improvement, meaning that to improve the human resource performance system, the two highest criteria require special attention in their implementation.
Data Clustering of Confirmed COVID-19 Patients Using Fuzzy C-Means Wahyu Sri Utami; Selfi Artika; Rizki Aldiansyah
Jurnal Internasional Teknik, Teknologi dan Ilmu Pengetahuan Alam Vol 5 No 1 (2023): International Journal of Engineering, Technology and Natural Sciences
Publisher : University of Technology Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46923/ijets.v5i1.200

Abstract

The continuous mutation of COVID-19 generates new virus variants with nearly identical symptoms, such as sneezing, runny nose, sore throat, cough, fever, loss of taste and smell, and shortness of breath. Since the emergence of this virus in Indonesia, there still needs to be more research on the symptoms caused by the different COVID-19 variants, leaving the public with minimal information that may result in inappropriate early treatment, inefficient costs, and insufficient recovery time. This study aimed to classify COVID-19 patient data into two clusters based on the severity of the symptoms experienced by patients: the confirmed cluster and the unconfirmed cluster. Using Fuzzy C-Means, patient data will be clustered into two confirmed and unconfirmed clusters of covid 19 disease as the initial step in the research phase. The results of this study are anticipated to provide information on variations in the severity of symptoms among infected patients, thereby enhancing the precision of early diagnosis and treatment. The resulting clustering model is based on data collection and processing outcomes using Python and the Fuzzy C-Means algorithm, which is based on experimentation. Keywords: Cluster, COVID-19, Fuzzy C-Means.
Fuzzy Logic Implementation In Internet Of Things Technology For Foging Greenhouse Plants Suyud Widiono; Iwan Hartadi TU
Jurnal Internasional Teknik, Teknologi dan Ilmu Pengetahuan Alam Vol 5 No 1 (2023): International Journal of Engineering, Technology and Natural Sciences
Publisher : University of Technology Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46923/ijets.v5i1.205

Abstract

Misting of plants in a greenhouse has an important role in maintaining the environmental humidity that plants need. Obstacles faced to maintain the humidity of the plant environment is the use of a thermometer as a measuring tool and misting is still manual. Based on these problems, this research presents an automatic misting system for plants in a greenhouse using the fuzzy logic method. The process of taking data on the temperature and humidity of the plant environment in the greenhouse is from the DHT11 sensor value which is read by the microcontroller to be stored in the Firebase cloud database, the temperature and humidity data in the cloud database is sent and displayed in real-time by an android application built with the MIT tool App Inventor 2. Apart from displaying temperature and humidity data from Firebase, the Android application also processes it using fuzzy logic to produce PWM (Pulse Width Modulation) values to set the fog time. The fuzzy logic method was chosen to map input data problems to output data in conducting fog control. From the sensor test, the results obtained from the comparison of DHT11 sensor readings have an average error of 2.73%. The duration of watering is carried out using Fuzzy logic, the total amount of watering in a day is 2,500 ml of water with a duration of 75 seconds, so that the fogging with the fuzzy logic method is in accordance with the conditions needed in the greenhouse room.
Implementatiton of Evaluation Registration Outpatient Computerized Hospital Using a Web-based Technology Accepted Model System Yunita Wisda Tumarta Arif; Nabilatul Fanny; Dwi Puji Lestari
Jurnal Internasional Teknik, Teknologi dan Ilmu Pengetahuan Alam Vol 5 No 1 (2023): International Journal of Engineering, Technology and Natural Sciences
Publisher : University of Technology Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46923/ijets.v5i1.207

Abstract

The Information of health system is combination of devices and procedures used for manage information cycle from data collection to providing feedback infomation, for support the implementation of appropriate actions in planning, implementation and monitoring of health system performance. Outpatient registration is the main service received at an outpatient registration. Technologi Accepted Model System created using the PHP programming language and mysql database. The WEB-based Technology Acceptance Model (TAM) is in the form of all evaluation models that can determine the readiness of officers to accept a system. Application of the Web-based Technology Accepted Model System in Evaluating officer acceptance of the computerized Outpatient Registration information system at a hospital in Boyolali, Central Java, Indonesia. The Technology Accepted Model in this study used 5 variables where the results of the implementation of the Technology Accepted Model System showed that the analysis of customer satisfaction with outpatient application systems on the Perceived ease of use dimension obtained satisfied results of (64.8%), on the Perceived usefulness dimension the results obtained satisfied by (63.3%), on the Attitude toward using dimension obtained satisfactory results of (64%), on the Behavioral intention to use dimension obtained appropriate results of (69%), on the Perceived service availability dimension obtained very satisfied results as large as (69 ,3%). Conclusions from the dimensions of Perceived ease of use, Perceived usefulness, Attitude toward using. Behavioral intention to use, and Perceived service availability indicate that officers are satisfied with the Outpatient Registration Application System at Hospitals
The Application of Sustainable Materials in the Design of a Culinary Center at Klayar Beach, Pacitan Marcelina Dwi Setyowati; Adita Dwi Kusumawati
Jurnal Internasional Teknik, Teknologi dan Ilmu Pengetahuan Alam Vol 5 No 1 (2023): International Journal of Engineering, Technology and Natural Sciences
Publisher : University of Technology Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46923/ijets.v5i1.210

Abstract

Pacitan has many natural tourist destinations, one of which is Klayar Beach which is the mainstay of the Pacitan Regency Government in increasing regional income. Klayar Beach has experienced an increase in the number of visitors, so it needs supporting facilities that can be used by visitors while on Klayar Beach. It is also hoped that the design of the Culinary Center can improve the economy of the people around the Klayar Beach area. The use of Sustainable Materials was chosen as a solution to problems that respond to environmental conditions at Klayar Beach. The selected sustainable material that is applied to the design is bamboo material which is widely used by people in Pacitan. Bamboo is a sustainable material because it grows faster, is stronger, cheap and easy to get, is flexible, and lasts a long time with a pre-preservation process. The design method with descriptive qualitative includes problem identification, data collection, analysis and concept synthesis. The data collected is in the form of primary and secondary data and then analyzed so that the results obtained will be applied to the synthesis of the design concept. The final results obtained are to get the concept of mass composition, and the concept of building structures that respond to the environment by using bamboo materials as an implementation of the selected sustainable material concept.
The Value Chain Analysis in The Dried Mackerel Meatball Processing Industry Syamsudin; Gerry Anugrah; Heru Winarno
Jurnal Internasional Teknik, Teknologi dan Ilmu Pengetahuan Alam Vol 5 No 1 (2023): International Journal of Engineering, Technology and Natural Sciences
Publisher : University of Technology Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46923/ijets.v5i1.216

Abstract

In facing the level of trade competition, every industry is required to be able to have high competitiveness in order to remain superior, this is no exception on a regional, national and even local industrial scale. PD. Karya Cipta Mandiri is a food processing industry with dried mackerel fish balls as a product. The existence of uncertainty in the company's production that comes from a lack of supply causes a decline in sales and makes the company suffer losses, this is because the company only has relationships with suppliers in only one province, namely Banten. The purpose of this study is to make an in-depth analysis of how the food processing industry for mackerel meatball products manages its activities in its corporate value chain. This is important because through value chain analysis, activities that have and have not added value to a company's competitive advantage can be identified. The analysis used includes analysis of internal conditions carried out in two ways, Resource Analysis and Capability Analysis. The next step is to assess the value chain analysis of the five main activities and four supporting activities. The research results identified two resources and two potential strength capabilities that can be used to help companies determine competitive advantage strategies, while it is known that five strategically relevant potential disadvantages have been identified to become sources of long-term competitive advantage strategies in companies, and it is explained that maintaining ties that can generate profits from the company with suppliers is essential for the company
Harmonizing Seismic Vulnerability Data for Effective Seismic Risk Assessment: Expert Judgment Method and Findings from a Multi-Stakeholder Study in Indonesia Adi Setiabudi Bawono; Noram Irwan Ramli; Mohamad Idris Ali
Jurnal Internasional Teknik, Teknologi dan Ilmu Pengetahuan Alam Vol 5 No 1 (2023): International Journal of Engineering, Technology and Natural Sciences
Publisher : University of Technology Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46923/ijets.v5i1.242

Abstract

Seismic Risk Management (SRM) is crucial for mitigating the impact of earthquakes, encompassing earthquake preparedness, response planning, building design, and emergency management systems. The 2006 Yogyakarta earthquake in Indonesia resulted in significant loss of life, infrastructure damage, and economic impact, underscoring the importance of Seismic Risk Assessment (SRA) for effective risk reduction. Seismic vulnerability functions are commonly used for SRA, but data collection can be expensive and challenging, and results may be biased due to expert judgment. In Indonesia, variability in house damage state definitions among agencies poses challenges in harmonizing data. This study used expert judgment to harmonize differences in damage state variables resulting from variable references. Data on damage states from five (5) agencies were collected and harmonized through input from earthquake engineering experts via online questionnaires. The resulting data identified five (5) types of damage and reduced variables to nine through harmonization. Twenty (20) experts with diverse backgrounds, including academics, researchers, contractors, consultants, volunteers, and government stakeholders, participated in the study through online questionnaires, and the results were processed and analyzed. The expert judgment method successfully harmonized the differences in damage state variables, ensuring a consistent, reliable, and accurate assessment of building damage, particularly housing damage. The findings of this study underscore the crucial role of expert judgment in harmonizing data for seismic risk assessment. The survey gathered input from experts with diverse backgrounds, including government stakeholders and academics, enriched the study's findings and contributed to a comprehensive understanding of earthquake disaster management. Through expert judgment, the study successfully consolidated variables from different agencies into nine (9) harmonized variables for assessing building damage. Furthermore, experts proposed an additional fourteen (14) factors that need to be considered in residential house damage inspection forms, providing critical information for estimating the extent of damage and informing decisions about repairs or demolition. These variables can be categorized into Rapid Visual Screening (RVS) and observation in more detail, aiding in effective earthquake risk management. However, further validation through comparative literature and field analysis is needed to enhance accuracy and adaptability and explore the potential of incorporating soft computational algorithms in seismic vulnerability assessments as a promising approach.

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