bluuebunny/crossref_metadata_2025_split huggingface dataset:
Implementation of problem based learning to improve student learning achievement in turning machining lesson
Authors: Paryanto  , Hidayat F , Harjanto C T 
Published: January 2020

Abstract
The research aims to describe the application of project based learning (PBL) models to improve learning achievement, and to find an increase in learning achievement. This study uses a quantitative descriptive research approach to the type of classroom action research. The research data were obtained using an observation sheet of student learning activeness and a job grading sheet turning students. The application of PBL uses the model proposed by Carr and Kemmis where each cycle consists of four steps, planning, action, observation, and reflection. The results showed that the increase in student learning was illustrated in the pre cycle 46% (sufficient category) increased to 60.5% (good category) in cycle 1 and again increased to 79.7% (very good category) in cycle 2. Improved learning achievement students with a minimal completeness criteria score of 61% in the pre cycle increased to 75% in cycle 1 and again increased in cycle 2 to 93.8%.
Development of the maintenance and repair module for mechanical engineering education courses
Authors: Ardian A , Irwantoro A R , Sasongko B T 
Published: January 2020

Abstract
This study aims to develop a Dictation of Machine Maintenance and repair that is able to support the learning of the subject of Maintenance and Repair of the Department of Mechanical Engineering Education and determine the feasibility of the Maintenance and Repair Module of the Department of Mechanical Engineering Education. This research is a research and development which refers to the research and development steps of Sugiyono including identification of potential and problems, data collection, product design, design validation, design revisions, product trials, product revisions, trial use, product revisions and mass production. The results of the study show that the dictation of maintenance and machine repair of the Department of Mechanical Engineering Education, Faculty of Engineering, Yogyakarta State University has been developed with reference to the research and development steps of Sugiyono and it is feasible to be used in the Department of Mechanical Engineering Education, Faculty of Engineering, Yogyakarta State University.
The role of work characters on the creation of student technology
Authors: Ngadiyono Y , Sukardi T , Wijanarka B S , Rahdiyanta D 
Published: January 2020

Abstract
Universitas Negeri Yogyakarta has a motto of leading in character education and this is manifested in the goal of creating a superior, creative and innovative learning process and environment that can empower students. In the same vision with those objectives, this study had two purposes; the first was to find the role of a character in the quality of the final product and determinants of work character on product quality. The research used to measure both research factors. A total of 56 diploma students became the sample of this study. The results showed that the character of work contributes to the quality of work of student technology. The research also indicates two aspects that contributed to the quality of the product.
Self-organising system design method to improve creativity and effectiveness of experimental learning
Authors: Susanto M R , Susanto D , Finanda S A , Sudirman A , Mahanani C 
Published: January 2020

Abstract
The learning process in the experimental design of visual communication design is one of the in-depth processes of the design methodology application. The objectives of this study include (1) increasing the effectiveness of self-organising system method to spur the level of creativity; (2) Improving the quality of the experimental learning process technically; and (3) Testing the effectiveness of self-organising system method. This type of research used qualitative research that reflectively describes the findings of factual data regarding the development of the learning process and the effectiveness of the self-organising system in the field. Data collection procedures used the reflection model proposed by Ralph, namely, reflective and intuitive designs. The research results show that (1) learning outcomes can be improved through the process of creativity as a result of experimental learning methods of visual communication design and the application of the self-organising system design method, (2) the quality of experimental learning processes can be improved through the self-organising system design method as an alternative of experimental learning in the visual communication design course, and (3) effectiveness of the strategy can be tested through the self-organising system method that significantly influences the experimental learning process in the visual communication design course.
National student skill competition interest in creative industry entrepreneurship
Authors: Suparmin S , Priyanto S , Setiadi B R 
Published: January 2020

Abstract
Creative industries become a new labour market for graduates of Vocational High School (VHS). Creative industries have many sub-sectors that can be filled by all fields of expertise in VHS. Research is directed at how creative industry business opportunities need to be introduced by all students in Indonesia. An annual event such as the National Student Skills Competition (NSSC) held by the Ministry of Education and Culture is a tool for research objects to photograph the interest of Indonesian children in the creative industries. The study used survey methods with locations in Yogyakarta. The questionnaire contributors were distributed by almost two-thirds of representatives in each province in Indonesia. The results of the survey show that the most popular creative endeavours are culinary. However, the results of our study also revealed that the trend of expectations of many high achieving students in this worksheet wanted to continue their studies rather than work or become entrepreneurs. However, creative industry employment opportunities need to be disseminated massively to all VHSs so that the vocational graduates’ job market will be more comprehensive and encourage to open millions of creative entrepreneurs.
The effect of laboratory knowledge, teaching practice experience, and work motivation on laboratory management
Authors: Mahanani C , Wening S , Susanto M R , Sudirman A 
Published: January 2020

Abstract
The objectives of this research are to describe laboratory knowledge, teaching experience, work motivation and laboratory management, to know the influence of knowledge, teaching experience, and work motivation on the laboratory management either independently or collectively, and to know the contents of the laboratory, teaching experience, and work motivation in terms of the laboratory management organized either independently or collectively. This research is an ex post facto research along with a correlational approach. The population of samples comprised 36 teachers of the Dress Fashion in Yogyakarta City. The results showed a significant influence of the laboratory knowledge on the laboratory management with the f count of 15.597. There was a significant influence of teaching practice experience on the laboratory management with the f count of 5.119; there was a significant influence of work motivation on the laboratory management with the f count of 17.207, and there was a significant influence of laboratory knowledge, practical teaching experience, and work motivation on the laboratory management at the Vocational School teachers of Yogyakarta City with the f count of 10.848, and laboratory knowledge variables, practice teaching experience and work motivation (50.4%) simultaneously influenced the laboratory management.
Speaking ability media implementation in learning teaching on public high school
Authors: Widiyono Y , Rochimansyah  , Jannah W N 
Published: January 2020

Abstract
Javanese language is one of the local wisdom in Javanese society. It has uniqueness where varied language in the communication process. It is included the utterance level which has its own function and role It will influence the student in building character, self-motivation and so on. If the teaching-learning material can be combined with digital media, it will give the student acceleration to comprehend the lesson. The study is for finding out the students’ response to how intensive the implementation of media usage in speaking of a high school student in Purworejo. There are two points-in focus: response and feedback. The points have four indicators; relevancy 86.3%, attention 83%, satisfaction 82.4%, and self-confidence 83.6%. The questioner shows that the students gave positive feedback to the media usage in speaking.
Comparative analysis of edge detection methods on beaker glass
Authors: Amalia A F , Budhi W , Arifin N 
Published: January 2020

Abstract
Digital image processing in the form of edge detection using the Sobel, Robert, Prewitt, Canny, and LoG algorithms, in addition to the binarization algorithm, can determine the edges of an object so that it is expected to improve accuracy. In this study, edge detection analysis will be performed on RGB (Red, Green, Blue) images from image capture using a Digital Single-lens Reflex Camera (DSLR) camera. Image processing of the DLSR image uses algorithm design that is made systematically, structured, and neat so that the results of the program can be strived to run following what is expected.
Developing video for agriculture product processing course in the subject of garlic snack production
Authors: Anggraeni A A , Nurtriyanti D , Rinawati W , Murniati D E 
Published: January 2020

Abstract
The study aims to 1) develop an instructional video of garlic snack production for Agriculture Product Processing course, 2) measure the feasibility of the video. This is a research & development (R & D) study using 4D models (Define, Design, Develop, and Disseminate). The feasibility test was performed by two material experts, one media expert, and 30 students of XI grade in State Vocational High School 1 Cangkringan. The data were collected using 4-point Likert scale questionnaires and analyzed descriptively. The video had a duration of 12 min 9 sec with mp4 format. This video consisted of a) an opening section delivered by the presenter containing the introduction about snack product, main ingredients, and the selection of packaging materials, b) a content section consisting equipment and ingredients preparation, production process, packaging process, and expired date determination, c) a closing section delivered by the presenter containing evaluation and conclusion. The video was uploaded to YouTube channel Boga UNY of https://youtu.be/s04y8VGoTak. The feasibility test results of the video according to the material experts, the media expert, and the students were respectively 94.60%, 98.96%, and 93.85%. It can be concluded that the video is very feasible to be used as a learning media.
The factors influencing digital literacy of vocational high school teachers in Yogyakarta
Authors: Warno K 
Published: January 2020

Abstract
The purpose of this study is to reveal the condition of teachers’ digital literacy and the effect of the achievement motivation towards digital literacy among Tourism vocational teachers in Yogyakarta based on age generation, i.e the generation differences of Baby Boomers, X and Y. This research belongs to ex-post-facto with a quantitative approach. The research subjects were 130 teachers consisting of teachers from state tourism vocational schools in Yogyakarta. The results showed that the majority of digital literacy among tourism vocational teachers can be categorized as medium and the variable of achievement motivation plays a significant influence on digital literacy. Moreover, there was a significant influence from the facilities that were used by the teachers towards their digital literacy. Also, there were differences in teachers’ digital literacy among teachers who were born in the baby boomers generation, X and Y generation. It means that the variable age generation of teachers can improve the digital literacy skills of vocational school teachers in the field of tourism.
Concentration of Exopolysaccharides (EPS) Produced from Fermentation of Hydrolysate Biomass of Tuni Sagoo (Metroxylon sp.) Starch by Lactobacillus plantarum FU-0811 in Semi Pilot Scale using Nanofiltration
Authors: Susilowati A , Aspiyanto  , Maryati Y , Dinoto A 
Published: January 2020

Abstract
Nanofiltration (NF) system is one of the concentration process step to recover exopolysaccharides (EPS) concentrate (retentate) as food aditive (thickener, stabilizer and emultion). Feed was biomass containing EPS as a result of growth of Lactobacillus plantarum FU-0811 culture under 37 °C for 72 hours in semi pilot scale (20 L). Biomass was a growth media containing sagoo sugar as a result of step enzymatic hydrolysis on tuni sagoo (Metroxylon sp.) starch using commercial α–Amylase and Amyloglucosidase (AMG) enzymes and other active compounds. Concentration process was conducted by pump motor frequency of 20 Hz, room temperature, and pressure of 10, 15 and 20 bar for 0, 30, 60, 90 and 120 minutes. Result of experimental work showed that NF system has potential use to concentrate biomass containing higher composition than that permeate. Based on optimum EPS, NF system that results a successfully separation of EPS with rejection of 95.24 % was reached at pressure of 20 bar and 60 minutes to retain EPS in concentrate (retentate) of 2.454 % (dry weight) and freely pass in permeate of 0.0097 % (dry weight) with permeate flux value 37.5 L/m2.hour. In this optimum process condition, NF system was able to increase of EPS in retentate of 56.46 % from prior to process (feed) and after process concentration.
Effect of listening to Quran recitation on workload and driving performance: A car simulator study
Authors: Purnomo H , Setiawan D 
Published: January 2020

Abstract
Both mental overload and mental underload can affect driver performance and lead to traffic accidents. This study examined the effect of Quran recitation, one of the alternative voices often heard during driving, against the mental workload. The frontal lobe EEG, i.e., AF3 and AF4, was used as an indicator of the mental workload. Experiments were carried out in four scenarios, i.e., simple road with Quran recitation, simple road without Quran recitation, complex road with Quran recitation and complex road without Quran recitation. EEGLAB toolbox was used to process raw EEG and to perform statistical parametric test. Paired t-test statistics (p-value 0.05) were applied to compare the scenarios. The statistical test showed that there was statistically significant difference in the alpha and beta wave when the driver was given the Quran recitation both in simple and complex road. An increase in alpha wave was an indication of the increased in focus and relaxation, which can lead to improved driver performance. This finding can be used as an alternative of secondary task that is save for drivers. quality of dried Bilih fish can be determined on the basis of its water and protein content.
Extraction optimization for antioxidant phenolic compounds in black grass jelly (Mesona palustris BL) using response surface methodology
Authors: Hendratama H , Harismah K , Fuadi A M 
Published: January 2020

Abstract
Black grass jelly is a traditional plant that is more widely used as medicine to prevent carcinogenesis, diabetes, and hypertension, to overcome diarhea, because it is antimutanogenetics, stabilizers, and immunomudulators, besides black grass jelly also contains antioxidants. This study examines changes of temperature and solvent ratio toward the composition of phenols, tannins, and flavonoids which are antioxidant constituents. Analysis of phenols and tannins uses folin quality reagents, while analysis of flavonoids uses the spectrophotometer method. The change of temperature and solvent ratio gives effect to change of phenol, tannins, and flavonoids amount. Optimal extraction of phenol, tannin and flavonoids using the response surface methodology (RSM) occur at a temperature range of 94-100°C with a solven ratio of 23-24 ml/g.
Measurement of magnetic fields on electric train
Authors: Nugroho H W , Sudrajat M I , Bakti A N , Yudhistira  , Arjadi R H 
Published: January 2020

Abstract
Electric train is one of the most widely used transportation modes in Indonesia especially Jakarta. In general, all electrical and electronic based equipment when operated will produce electromagnetic fields. At present, the railway system uses electric power, both as to its driving force, as well as a supporting part (light system, air conditioner, etc.), and instead uses very large electric power. So surely the train system produces an electromagnetic field. Electromagnetic fields are a combination of invisible electric and magnetic fields of force. They are generated by natural phenomena, but also by human activities, mainly through the use of electricity. The magnetic field on the train generally occurs in areas close to the source. In this paper, already measured the magnetic field (near field) in the electric train in the frequency range 0.015 kHz up to 1 kHz. The measurement results show that the highest magnetic field is obtained when the train starts up at 333.76 nT. The magnetic field level is small when away from the electrical inverters. The average level of the magnetic field when the train is at its highest is 223.26 nT and during braking there is an increase of 323.93 nT.
Modified fuzzy Delphi to determine the consensus of government facility governance
Authors: Sutapa I N , Wullur M 
Published: January 2020

Abstract
The article discusses the development of governance indicators for work facility policies of local government. These indicators will be used as a policy to ensure that work facilities are durable, cost-effective in procurement and maintenance, are effective in use, and added value for end of use/life. Many researchers previously developed governance indicators with the Fuzzy Delphi method, but there were still gaps, namely the differences in the weight of expertise had not been accommodated in determining the final consensus of the importance of each indicator. In this article, the indicators are developed by expert, by considering the weight of their expertise, using a modified Fuzzy Delphi method. The final results of the study are four dimensions of government work facilities governance with twenty indicators that are important in improving the operational performance of local governments.
Job Safety Analysis in Production Floor of PT BD Based on Semi Quantitative AS/NZS4360 Method
Authors: Widodo I D , Dwinanda N R A 
Published: January 2020

Abstract
Every industry must pay attention to the job safety of each employee by implementing good job safety effort to create a comfortable, healthy and prosperous work environment. It is related to the relationship of labor with work equipment, materials and processes, workplace foundations and ways of doing the work. This research was done in PT BD by implementing Job Safety analysis based on AS / NZS 4360. The analysis indentifies 6 jobs that should be improved, namely, (1) Lifting the core (2) cutting mother core (3) The process of removing the email layer (4) Placing the results of the cutting core to the decoiler (5) Taking the cutting results for semi stacking and (6) Taking cutting results for semi wound. Some recomended actions are proposed such as improving the tool, developing SOP, better controlling procedure and improving operator (training).
Development of Chitosan/TiO2 Nanocomposite for Multifunctional Sunscreen Application
Authors: Petrick J , Ibadurrohman M , Slamet  
Published: January 2020

Abstract
Several problems that often occur on the skin are acne and sunburn due to UV exposure. Acne is caused by the activity of bacteria dwelling on the surface of skin. This study has successfully synthesized several multifunctional cream based on chitosan loading in the chitosan/TiO2 nanocomposite. Multifunctional sunscreen defined by anti-bacterial and sunscreens performance with photocatalytic technology. Multifunctional sunscreen is made by Chitosan/TiO2 nanocomposite as active ingredient. Nanocomposite which has been synthesized is characterized by FT-IR, UV-Vis DRS, and SEM-EDX. To make Multifunctional sunscreen, the nanocomposite chitosan/TiO2 as active ingredient is mixed with water and carboxymethyl cellulose (CMC) as natural emulsifier. The result of testing the disinfection of bacteria Escheria coli by nanocomposite chitosan/TiO2 showed the bacteria can be eliminated up to 99.7% within 2 hours. As sunscreens, creams have the ability to moderate protection under UV rays with SPF values from 21.30 to 22.77.
An Anthropometric Study of Head for Designing Ergonomic Helmet for Acehnese Adults
Authors: Andriani M , Widyanti A , Yassierli  , Pramanda R , Suheri  
Published: January 2020

Abstract
One of the fundamental applications of ergonomics is the use of an anthropometric approach for product design and evaluation. Redesigning ergonomic helmets using anthropometric methods is the aim of the study. In this study, participants consisted of 102 women and 102 men who were involved voluntarily. Based on the preliminary study, we found the following head dimensions considered important for helmet design, including: Head breadth, Menton to top of the head, Diametric menton to back of the head, Nose to top of head, Pronasale to back of head, Face breadth, and Eye to back of head. Anthropometric data are presented in this paper, and proposed helmet size design data is discussed.
A literature review on reducing carbon emission from supply chain system: drivers, barriers, performance indicators, and practices
Authors: Ibrahim M F , Putri M M , Utama D M 
Published: January 2020

Abstract
This study aims to review the literature in reducing carbon emission from supply chain system for the past few years and presenting drivers, barrier, performance indicator, and practice. The issue of reducing carbon emission become frequently discussed since unplanned and irresponsible actions by industries are potential threats to sustainability. Companies are now trying to minimize environmental impacts by integrating environmental concerns into their supply chain operations. In the aim of reducing carbon emissions, the industry is faced with different drivers, barriers, and performance indicator. With a variety of problems faced, the practices taken to reduce carbon emissions are very diverse. Thirty papers were collected from previous studies and linked to discussion points. The result showed that good coordination with various media in the supply chain system would be able to achieve common goals in reducing gas emissions.
Sequential optimization of a water-based polygeneration system in ethylene glycol production
Authors: Prihatin T , Mahadzir S , Mutalib M I Abdul 
Published: January 2020

Abstract
Polygeneration system as one of the promising strategies shows the great potential for natural resource sustainability, particularly water. In this paper, a model of water-based polygeneration system to minimize the freshwater consumption and the wastewater generation is presented. Water usage in a heat and power utility, cooling utility, and chemical production are modelled simultaneously. To demonstrate the applicability of the model, a case study on the synthesis of optimum water-based polygeneration system is developed for an ethylene glycol production. A two-steps optimization method is presented. The first step consists of the synthesis and design of the polygeneration unit in which a superstructure containing three subsystems, i.e. heat and power generations, re-circulating cooling water system, and chemical production is introduced. A mixed integer non linear program (MINLP) model is developed to allow the selection of choices. The second step includes the incorporating of wastewater treatment strategy and a non linear program model is developed. As results, comparing to the simultaneous method in the same case study, this approach gives a better result in a computation efficiency.