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All Journal Cakrawala Pendidikan Jurnal Edukasi Elektro Jurnal Penelitian Saintek INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni JINOP (Jurnal Inovasi Pembelajaran) ELINVO (Electronics, Informatics, and Vocational Education) International Journal of Artificial Intelligence Research Jurnal Nasional Teknik Elektro dan Teknologi Informasi
Yuwono Indro Hatmojo, Yuwono
Universitas Negeri Yogyakarta
Arts Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering

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A CHARACTER-BASED ASSESSMENT MODEL FOR VOCATIONAL HIGH SCHOOLS Edy Supriyadi; Zamtinah Zamtinah; Sunaryo Soenarto; Yuwono Indro Hatmojo
Jurnal Cakrawala Pendidikan CAKRAWALA PENDIDIKAN, VOL. 38, NO. 2, JUNE 2019
Publisher : LPMPP Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (951.055 KB) | DOI: 10.21831/cp.v38i2.24099

Abstract

The competencies of vocational high school (VHS) graduates, especially in terms of character have not met its standards. This study aims to develop a character-based assessment model for VHS in the form of a guide and procedure. Borg Gall’s (1989) model with the following stages was utilized: (1) needs analysis, (2) planning, (3) development, (4) phase I trial, (5) phase II trial, (6) evaluation of model effectiveness, and (7) final product development. This study involved some experts in the model validation. Trials were done to teachers and principals in eight VHSs in Yogyakarta Special Province, Indonesia in 2017 (first trial), and those from 42 VHSs throughout Java island, Indonesia in 2018 (second trial). Data were collected by questionnaires and interviews and analysed by quantitative and qualitative descriptive statistics. This study suggest that, overall, the model is appropriate and feasible to use, proven by (1) the assessment guide is categorized as ‘very appropriate’ (Mean 3.55; SD .52); (2) assessment procedure achieves an ‘very appropriate’ category (Mean = 3.60; SD = .51); and (3) effectiveness of the assessment model in trial 1 is in the ‘very appropriate’ category (Mean 3.43, and SD .51), and in trial 2 is in the ‘appropriate’ category (Mean 3.38, SD .53).
PERFORMANCE OF BACKPROPAGATION NEURAL NETWORKS FOR CULTIVATION DAILY LOADS IN JAW A CENTRAL-DIY Kustono Kustono; Yuwono Indro Hatmojo
Jurnal Penelitian Saintek Vol 11, No 1: April 2006
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7504.068 KB) | DOI: 10.21831/jps.v11i1.5465

Abstract

Goals   of  this  research   are  implementing    Artificial   Neural   Network (ANN)  algorithm for  load forecasting   and getting  its performance.   The training  data  was takenfrom     UPB  Ungaran.  The performance   can be got through  comparing  ANN test result with the real load at that time. The   research    methodology    usc   experimental     and   design    models approach.    The     phases    of  this   research    were:    I.   analyzing    and identifying    of  need    2.  developing    of  load  forecasting     application software  with  C programming.   3. entering  and  training  the data to get data pattern.The  result  of  this  research.   the  load forecasting  result  by ANN  was close with UPB loadforecasting.    but several  ANN  test result have more deviation  than  UPB. because  number  of training  data  was  less. so the forecasting     pattern    111as not   too   accurate     Beside    that.   another possibility   was  the number  of iteration  must  be more  than  / ()()(J  timesiterations   in  order  to get  more  less  error.   There  was  33,3% of ANN result  that  has  more  less  deviation,   although   the  number   of  training data  was  not  different,  because  that  data  has  no  extrem variation,  sothe pattern   was faster   to be recognized.   Generally,   ANN  will  give  an accurate  pattern  recognation    if the data is valid and the number  of the data is quite enough.
Implementasi Wavelet Haar dan Jaringan Tiruan Pada Pengenalan Pola Selaput Pelangi Mata Yuwono Indro Hatmojo
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 3 No 1: Februari 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 (192.376 KB)

Abstract

Eye iris pattern recognition is widely used for the purpose of identifying a person's identity. This is can be done because the iris is unique and has a high consistency and stability for years without changing. In this research we will perform iris image pattern recognition by the Haar level 3 wavelet transforms and the LVQ neural networks. This research is expected to know the iris images pattern recognition systems which are more effective; efficient also requires a short time in matching process on this method. The object in this research is the PNG color images with size of 128 x 128 pixels. Parameters used in this research are to varying value of learning rate 0.01 and 0.05, the number of neurons 30 and 40; and epoch value 100 and 200. The values of these parameters will be varied so that the obtained parameter values are the most effective, efficient and a relatively requires short time in the process of the iris image pattern recognition.Based on testing performed, the Haar level 3 wavelet transform combined with LVQ neural network in the process of finding the iris images. The method also gives fast matching process and high accuracy level. Changes in the values of learning rate, number of neurons and epoch value affect network performance. The iris matching process has the fastest time of 2.15 seconds and the higher of accuracy of 87% when the value of learning rate 0.01; the number of neurons 40 as well as the epoch value 100.
Development of Teaching Factory Learning Model in Industrial Automation in Vocational High Schools Hatmojo, Yuwono Indro; Ikhsannudin, Wahyu
Jurnal Edukasi Elektro Vol. 8 No. 1 (2024): Jurnal Edukasi Elektro, Volume 8, No. 1, Mei 2024
Publisher : DPTE FT UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jee.v8i1.68772

Abstract

Vocational High Schools, as schools that aim to prepare students for work in a particular field, need effectiveness in the learning process. Its effectiveness must follow the real conditions required by the industry. With the rapid devel-opment of industry, industry-based learning, often called "Teaching Factory," is one of the right role models of learning. The type of research to be carried out is development research. The purpose of this study is to determine (1) the devel-opment of the teaching factory learning model, (2) the application of the teach-ing factory learning model, (3) user response to the product, and (4) the effec-tiveness of using the developed product. The development model used in this study is the Plomp development model. The Plomp development model includes (1) the initial investigation phase, (2) the design phase, (3) the realiza-tion/construction phase, (4) the testing, evaluation, and revision phase, and (5) the field test/implementation phase. Validity by model experts about the teach-ing factory learning model gets an average score of 95.45 and is included in the very decent category. The material expert gave it a score of 93.41, and it be-longs to the very decent category. The media expert gave it a score of 95.84, which belongs to the decent category. The effectiveness test result shows a sig-nificant difference between the learning outcomes in the Industrial Automation Engineering Expertise Concentration subjects before and after applying the Teaching Factory learning model. This shows the positive influence and effectiveness of using the Teaching Factory learning model on the learning out-comes of the Industrial Automation Engineering Expertise Concentration in In-dustrial Automation Engineering Vocational School students.
Augmented reality based android application for introduction of pneumatic hydraulic components Hatmojo, Yuwono Indro; Panjaitan, Christin Elisabet; Azis, Satria Muhammad; Al Hakim, Vando Gusti; Ratnawati, Dwi
JINoP (Jurnal Inovasi Pembelajaran) Vol. 10 No. 2 (2024): November
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jinop.v10i2.34733

Abstract

This study focuses on the utilization of augmented reality (AR) to enable comprehensive visualization of objects. Its primary objective is to develop and evaluate an AR application as a medium for introducing pneumatic hydraulic components. The research method employs a development research approach, following the assessment, design, development, implementation, and evaluation steps proposed by Lee and Owens. The feasibility of the product is determined through various assessments, including black box testing, validation by media experts, validation by content experts, and evaluation of initial user response. The outcome of this study is application software incorporating AR technology for the purpose of introducing pneumatic hydraulic components, along with a corresponding workbook. Whereas the application is compatible with the Android operating system and utilizes QR codes as markers for augmented reality objects, which are conveniently included within the workbook. Performance testing reveals that all application functions perform exceptionally well according to black box testing. Furthermore, the content expert feasibility assessment yields results categorized as “Good,” while both the media expert feasibility and initial user response tests indicate “Very Good” outcomes.
Development of Electropneumatic Simulation Learning Media based on Virtual Reality for Increasing Students' Competence Skills in Industrial Automation Engineering of Vocational School Sugiarto, Hariyadi; Hatmojo, Yuwono Indro
Elinvo (Electronics, Informatics, and Vocational Education) Vol. 9 No. 2 (2024): November 2024
Publisher : Department of Electronic and Informatic Engineering Education, Faculty of Engineering, UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/elinvo.v9i2.77582

Abstract

This research and development aim to (1) know the development step of Electropneumatic simulation learning media based on Virtual Reality for increasing students' competence skills in Industrial Automation Engineering; (2) create a proper Electropneumatic simulation learning media based on Virtual Reality for increasing students' competence skill in Industrial Automation Engineering; (3) analyze the effectiveness level of Electropneumatic simulation learning media based on Virtual Reality for increasing students' competence skill and response in Industrial Automation Engineering. This research and development used the ADDIE model (Analyze, Design, Develop, Implement, Evaluate). The effectiveness level of virtual reality media was analyzed using n-gain data from the pre-test and post-test enhancement score results. The results of this research and development are as follows: (1) the developed virtual reality media worked well after passing the functional test by using the Black Box testing method; (2) the development of the Virtual Reality learning media received an average score of 87.77% from three media experts and an average score of 88.75% from two subject matter experts. Based on these average scores, virtual reality learning media is categorized as "VERY PROPER" and can be used as a learning medium for practicum; (3) the use of Virtual Reality was effective in increasing students' competence skills and response, based on the hypothesis testing results using a Paired Sample T-test, a Sig. (2-tailed) value of 0.129 > 0.05.The development research encountered several limitations, such as the high cost of Virtual Reality devices, students' unfamiliarity with Virtual Reality technology causing discomfort, and the extended time required for students to become proficient in operating Virtual Reality devices.
APLIKASI ELEKTRONIKA DAYA UNTUK PENGATURAN MOTOR INDUKSI BAGI PARA GURU SMK DI DAERAH ISTIMEWA YOGYAKARTA Djatmiko, Istanto Wahyu; Ali, Muhammad; Sunomo, Sunomo; Hatmojo, Yuwono Indro
INOTEKS: Jurnal Inovasi Ilmu Pengetahuan,Teknologi, dan Seni Vol 19, No 1(2015)
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1166.89 KB) | DOI: 10.21831/ino.v19i1.5150

Abstract

Community Service Activity (PPM) on training "Power ElectronicsApplications for Induction Motor Settings for vocational teachers in YogyakartaSpecial Region" conducted at the Laboratory of Power Electronics andElectrical Machine Laboratory in the Department of Electrical EngineeringEducation FT UNY. This activity is conducted by the PPM team consisting oflecturers in the Department of Electrical Engineering Education , FT UNY withthe aim of: (1) provide basic knowledge and skills application of power electronics circuits, namely a series of alternating voltage regulator for inductionmotor control; (2) provide knowledge and skills of the induction motor settingsby utilizing one of the instructional media in the form of a variable speed driveunit; (3) do the programming unit of variable speed drives for induction motorsrotation speed controlling; and (4) do the programming variable speed driveunit for braking the motor induction. PPM activities conducted during the three-day meeting with the allocation for 25 hours. The training material covers the theory and practice include:induction motor theory, the theory of series AC drives, AC drive circuit practice, and practice of induction motor control using Altivar 312. This trainingwas attended by 23 people who had a vocational teacher expertise associatedwith this training. Training method used lectures, discussions, question andanswer, demonstration, and practice directly. The achievement of this result can be expressed PPM activities: (1) theparticipants have increased knowledge and skills in power electronics and itsapplications to induction motor settings are indicated by an increase in the valueof the mean pre-test and post-test participants of 48.9 into 76.5; (2 ) of theparticipants felt the benefits of the PPM activity shown from a mean value of 95 96 3.46 questionnaire scores that can be categorized, this activity is very good; and(3) the participants can develop the training materials as a instructional mediafor the control induction motors
The Expert Validation of Virtual Reality-Based Learning Media of Flexible Manufacturing Systems (FMS) Hatmojo, Yuwono Indro; Azis, Satria Muhammad; Fauzan, Muhammad Nur
International Journal of Artificial Intelligence Research Vol 9, No 1 (2025): June
Publisher : Universitas Dharma Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29099/ijair.v9i1.1470

Abstract

The advancement of digital technology has had a significant impact on the world of education, including vocational education that requires in-depth technical understanding. In this study, Virtual Reality (VR)-based learning media is an alternative to help the process of introducing engineering components more interactively and realistically. This study aims to validate VR-based learning media called Virtual Reality Distributing Station as a learning media in learning distribution station components in the Flexible Manufacturing System (FMS). Validation is carried out through evaluation by experts with a focus on two main aspects, namely, the content aspect and the media display aspect. Material experts are experts who are experienced in teaching FMS, while media experts come from experts in the development of computer-based learning media. Data analysis is carried out based on quantitative and qualitative results obtained from expert validation. The evaluation results show that the content aspect of the material, which includes suitability and usefulness, scored 87 out of 96 (90.27%) and is categorized as "very good." Meanwhile, the media aspect, which includes display design and usefulness, scored 61.5 out of 72 (85%) and is also categorized as "very good". These findings indicate that the VR Distributing Station learning media is suitable for use as a supporting tool for engineering learning in vocational education.
Co-Authors Azis, Satria Muhammad Dwi Ratnawati, Dwi Edy Supriyadi Fauzan, Muhammad Nur Ikhsannudin, Wahyu Istanto Wahyu Djatmiko Kustono Kustono MUHAMMAD ALI Panjaitan, Christin Elisabet Sugiarto, Hariyadi Sunaryo Sunarto, Sunaryo Sunomo Sunomo Vando Gusti Al Hakim Zamtinah Zamtinah