bluuebunny/crossref_metadata_2025_split huggingface dataset:
The effectiveness of internship information system application in vocational high school
Authors: Purnomo E , Pratama Y R , Rezani R 
Published: January 2020

Abstract
This study aims to determine the implementation of the internship information system application in vocational high school (VHS), measure the effectiveness of the internship information system application in VHS and determine the appropriateness of the internship information system application as media in VHS. Research conducted at VHS of Muhammadiyah Prambanan uses quantitative approach with a descriptive method. Samples were taken using a random sampling technique. Data collection techniques used were observation and questionnaires where the data are analysed using descriptive analysis and quantitative data analysis. The results of this study indicate that the implementation of internship information system by 73%. The level of effectiveness of internship information system applications, including both categories. The details are quality systems 72%, the quality of information 74%, quality of service 70% user satisfaction 71% and profit 70% as well as the application of internship information system fit for use as a media internship services with the percentage of the effectiveness of the application of internship information system by 71% and internship service by 72%.
Implementing student teams-achievement division to improve student’s activeness and achievements on technical drawing courses
Authors: Sutopo  , Wibowo A N , Wibowo Y E 
Published: January 2020

Abstract
The purpose of this research is to find out the process of cooperative learning action type student teams achievement division (STAD) and its effect on the activeness and learning outcomes of students in class X Mechanical Engineering of Vocational High School 2 Depok Sleman. This research is a classroom action research using STAD type cooperative learning model, using a qualitative approach to compare the results of observations of cycle I, cycle II, and cycle III. The results of the study show that the implementation of the STAD type cooperative learning model can increase student activity and learning outcomes in each cycle. There are increasing in learning activeness of students who received the minimum score of good categories and increasing in the number of students who received the minimum completion criteria.
ICT-based learning media development
Authors: Setuju  , Ratnawati D , Wijayanti A , Widodo W , Setiadi B R 
Published: January 2020

Abstract
This research aimed at developing ICT-based learning media for independent learning. The subjects of the research were Mechanical Engineering students of Universitas Sarjanawiyata Tamansiswa. By adopting Borg & Gall’s research and development model, this research was done in four stages, namely: (1) identification stage; (2) design and development stage; (3) production stage; and (4) evaluation stage. Questionnaires were the instrument used for data collection techniques, and the descriptive quantitative method was the data analysis technique. The results of the development of ICT-based learning media earned positive appraisals on the ease of use aspect with a percentage of 50%, and the display aspect with a percentage of 62.50%. In conclusion, ICT-based learning media that was developed on several vocational materials can be used as a learning media for independent learning.
Developing heat sink method in gas metal arc welding to minimize distortion
Authors: Wibowo H , Djatmiko R D , Marwanto A 
Published: January 2020

Abstract
Efforts to minimize distortion of welding results need to be done, considering that it can reduce the accuracy of the weld dimensions, increase the repair process, and increase the production costs. This study aims to reduce distortion by the heat sink (HZ) method and its effect on mechanical properties. The heat sink method was applied in conjunction with Gas Metal Arc Welding (GMAW) process by liquid nitrogen coolant with a variable of the HZ’s contact area. The HZ areas of contact were designed in 3 dimensions, namely 10 L, 20 L, and 30 L, and it was placed on the surface of the plate with 10 mm space from the welding line. The results show that the surface area in contact with the coolant affects the quality of the welding joint. Based on visual tests, the greater the HZ’s contact area, the greater the defected impacts due to the lack of penetration. Besides, the greater the surface area of the HZ, the more effective it is to minimize welding distortion, especially the distortion in the longitudinal direction. The HZ contact area has somewhat little influence on the hardness and microstructure of the weld metal (WM) and heat affected zone (HAZ), but probably does not affect the tensile strength of the welding joint.
The risk analysis of rice husk of co-firing fuel for boilers in sugar mills
Authors: Yunaidi  , Surahmanto F , Harnowo S 
Published: January 2020

Abstract
Biomass is a very important energy source in the sugar mill industry as the main fuel in the power plant boilers. The efficiency of boilers for most sugar mills in Indonesia is quite low and the availability of bagasse is lacking so that in its operations, co-firing has to be applied with an alternative biomass fuels such as rice husk, cane trash, wood and saw dust. Based on the analysis, rice husk has a lower calorific (3248 cal/gr) value than that of bagasse (4076 cal/gr), but it has a higher ash content (20.67%) than that of bagasse (3.66%), so adjustments in boiler operation is required when using rice husk as co-firing. The higher ash content in biomass can affect the performance of the furnace and superheater in the boiler and increase the potential for deposit formation. The composition of rice husk ash was dominated by silica (SiO2) which reached 95.52%. It is higher than the silica content of bagasse which reached 74.99%. The high silica content in rice husks has the potential to conduce melting ash in boiler grate. The alkali content of rice husk which was around 3.64% is less than that found in bagasse which reached 17.33%. Even though, the ash composition analysis shows quite small potential for slagging, fouling, melting, sintering, and agglomeration, but the large amount of ash content in rice husks can increase the potential for the occurrence of the risks.
Utilisation of mind map and TPACK within-pair check to enhance communication skill
Authors: Wijayanti A , Widyawati A , Septiani D , Setuju S , Widowati A , Kusdiyanta A 
Published: January 2020

Abstract
The urgency of improving skills is a problem in one of the schools in Yogyakarta, especially communication skills in learning. Therefore, this study aims to improve communication skills by utilising mind mapping and TPACK (Technological Pedagogical and Content Knowledge) in a pair of checks. The subjects of this study were thirty-eighth-grade students of Junior High School (JHS) of 5 Banguntapan Yogyakarta, totalling thirty-two students. This research is qualitative research with a class action research design. Classroom action research by referring to the Kemmis & McTaggart model, namely through stages (1) planning; (2) implementation; (3) observation; (4) reflection. The four stages are carried out in cycles. Data collection is done by observation, questionnaire and documentation. Observations were made to find out the pair of mind check assisted with mind maps. The questionnaire is filled in by students to find out communication skills. Documentation to document student and teacher activities during pair check assisted with a mind map. Data analysis techniques using quantitative descriptive analysis with percentages and qualitative descriptive. The results showed that the average communication skills increased by 5.55%.
Pedagogical competence of productive lesson teachers of vocational high schools in Banten province
Authors: Ramdani S D , Burhanudin  , Fawaid M , Abizar H , Fatkhurokhman M 
Published: January 2020

AbstractThis study aims to reveal the pedagogical competence of productive subject teachers in Banten Province in the learning process, the urgency of the pedagogical competency aspects of productive subjects and the perception of productive subjects’ teachers on pedagogical competencies. This research is a quantitative descriptive study conducted in 16 Vocational High Schools in Banten Province. Data collection techniques used were questionnaires, observations, and interviews. The data analysis technique used is descriptive statistical analysis. The results of the study are as follows: (1) The pedagogical competence of productive subject teachers in Vocational High Schools in Banten Province is generally included good category, (2) the urgency of the pedagogical competence of productive subject teachers at Vocational High Schools in Banten Province is generally included fundamental category, and (3) teacher teaching and learning activities there are still difficulties in the application of pedagogical competencies. Efforts by teachers to improve competence and knowledge are in participating in workshops and discussions with peers to increase knowledge and knowledge.
Development of mechanics techniques learning media-based three-dimensional flipbook
Authors: Setiyo E , Harlin  , Kistiono  
Published: January 2020

Abstract
This research aims to produce a valid and practical three-dimensional-based learning media. This research was a research and development. Materials and media experts assessed the validation of this learning media. The results of this study showed a valid learning media with excellent categories by media expert assessment. Assessment by materials expert showed in the good category. Based on a small group test and field test, the product practically was in useful categories.
Optimal knot selection in spline regression using unbiased risk and generalized cross validation methods
Authors: Utami T W , Haris M A , Prahutama A , Purnomo E A 
Published: January 2020

Abstract
Spline regression is a nonparametric regression method that estimates data patterns that do not form certain patterns with the help of knots. The best model is obtained from the optimal knot. There are several methods that can be used to select optimal knots, including Generalized Cross-Validation (GCV) and Unbiassed Risk (UBR). The best model selection criteria used are based on the Mean Squared Error (MSE) and R-Square values. This study discusses the comparison of spline regression models using the UBR and GCV methods as a method for selecting optimal knots in data generation simulations. This research resulted in the best nonparametric spline regression model from the UBR method obtained by using three knots which produced an MSE value of 738.67 and R -Square of 85.65%. Whereas, the best nonparametric spline regression model of the GCV method was obtained using three knots which produced an MSE value of 121.43 and R-Square of 97.64%. It can be concluded that the more appropriate method used for the selection of optimal knot is the GCV method because it produces a smaller MSE value and a larger R-Square compared to the UBR method.
Assessing the indicators of economic growth in Indonesia using spatial principal components analysis
Authors: Karim A , Utami T W , Fathurohman A , Setyowati C I , Suhartono  , Prastyo D D 
Published: January 2020

Abstract
The objective of this study is to reduce the number of indicators that affect correlated economic growth into the main component variables. The variables used Gross Regional Domestic Product (GRDP) (X1), Foreign Direct Investment (X2), Domestic Direct Investment (X3), Employment (X4), Human Community (X5), Export (X6), and Import (X7). The data used are secondary data taken from Statistics Indonesia in 2018. This study uses the Geographical Weighted Principal Component Analysis (GWPCA) with the kernel weighting used is exponential kernel weighting. The results of this study are the main component variables or new variables that can be explained about 89% of the original variables. Based on the first main component (PC1) which consists of three groups of variables that affect economic growth indicators, namely: the area of which economic growth indicators are influenced by the Human Resources variable (X5) followed by the GRDP variable (X1), the region whose indicators of economic growth are influenced by the Export variable (X6) is followed by the Import variable (X7), and the region which is an indicator of economic growth is influenced by the Import variable (X7) is accepted by the Export variable (X6).
Modelling of spatial lag of X regression in the School Operational Aid
Authors: Wasono R , Karim A , Darsyah M Y , Ismunarti D H , Suwardi  
Published: January 2020

Abstract
The issue of the allocation and distribution of the School Operational Aid (BOS) in Central Java Province is a complex problem since each region has different characteristics. The distribution formulation requires a spatial model as the neighbouring regions have dependencies. The variables in this research were BOS value, supervision/building cost, management cost, Human Development Index (HDI) analysed using the Spatial Lag of X (SLX) model with the weighting of Rock Contiguity. It is concluded that all variables have a spatial dependency with the BOS variable influenced by the variables of building and management costs significantly.
The feasibility of an android-based e-module to support learning PLC applications as controllers for automatic bottle filling and capping machines
Authors: Sukir  , Nurkhamid  , Nurdiyansyah  
Published: January 2020

Abstract
The objective of this study was to determine the performance and the feasibility of an Android-based e-module to support the learning process of PLC applications as the controller of automatic bottle filling and capping machines in the competency of Electrical Power Engineering Skills in SMK N1 Pundong, Bantul. The method applied was research and development that refers to the ADDIE model from Branch. The results revealed that the developed Android-based e-module named PLC TOI Module in the .apkfile format, showed good performance indicated by all menus that function properly. In addition, thee-module has a very high feasibility level to be applied in the learning process, proven by a combined score of 84.46% from the material and media expertsvalidation, and students’ response.
Functional test of the online Recognition of Work Experience and Learning Outcome System using black box testing
Authors: Zamtinah  , Supriyadi E , Soeharto  
Published: January 2020

Abstract
This paper describes: (1) the development of the online Work Experience and Learning Outcome (ReWELO) website, (2) the feasibility testing of the online ReWELO system, and (3) the functional testing of the ReWELO system using black-box testing. The method used to develop the ReWELO website was the design method. The instruments used for testing were questionnaires and observation sheets. The instrument’s validity was tested through expert judgment and the instrument’s reliability was examined with Cronbach’s Alpha. The feasibility of the website was analyzed by information technology experts and users (assessors and candidates). The function of the ReWELO Website was tested by using black-box testing. The collected data were then analyzed descriptively. The test results revealed that ReWELO’s website was rated “good” by information technology experts, assessors, and candidates. The average score of evaluation from information technology experts, practitioner, assessors, and candidates were 3.3; 3.5; 3.4; and 3.2 respectively. All features of the online ReWELO system were able to function properly as planned.
Safety education management in welding robotic laboratory
Authors: Ismara K I , Prianto E 
Published: January 2020

Abstract
The purpose of this study is to develop the OSH education management system for the laboratory of the welding robot arm. This study employed Research & Development (R & D) with the ADDIE model. The research consisted of two industries that have used welding robotic arms and the vocational schools of technology, which have welding workshops. The feasibility of the research results was done through audit-trail triangulation from relevant experts, i.e educators, competency test assessors, operators and/or experts from the industry. The results were in the form of the OSH for educational management system and the redesign draft of vocational education laboratory model on welding techniques using robotic arms to accommodate OSH, 5S - Seiri (Sort), Seiton (Set in order), Seiso (Shine), Seiketsu (Standardize) and Shitsuke (Sustain) and the ergonomics of the room. The results of the needs analysis related to the welding robot arm of the industrial arm are used as the basic pattern to redesign, develop and to compile the implementation of the welding education laboratory model assisted by robotic arms and complete with the OSH education management system.
The development of interactive android-based learning multimedia on the beef and its processing results course
Authors: Ayuningtyas F B , Rinawati W 
Published: January 2020

Abstract
This study aimed to develop interactive multimedia based on android on the course of beef and its processing results and to know its feasibility based on the material experts, the media experts, the teachers, and the students. This research can be categorized as Research and Development (R&D) with ADDIE model, namely Analysis, Design, Development, Implementation, and Evaluation. This study only covers the implementation stage. The results of the study showed that the development of multimedia includes analyzing students’ needs, designing multimedia products, making multimedia products with Adobe Flash CS6 software and validating with experts, testing the multimedia products to 24 students. The validation results revealed that the development of multimedia in the small-scale test in the case of the linguistic aspect was 83.38%, the presentation aspect was 82.25%, the interactive learning aspect was 86%, and the overall viewing aspect was 80%, respectively. These results indicate that these android-based interactive learning multimedia is very suitable to be used as a learning media for Food Material Knowledge with the Basic Competence of Analyzing Food Materials from beef and its procession results.
The relevance of airframe powerplant competencies in Bina Dhirgantara vocational high school with the aviation industry
Authors: Hariyanto E 
Published: January 2020

Abstract
The level of relevance of airframe powerplant expertise competencies with industry affects the opportunities for students to work in the industry according to their area of expertise. For this reason, it is important in this research to conduct research on the Relevance of Airframes Powerplant Competence of Vocational High School Bina Dirgantara with the aviation industry. The method used in this research uses descriptive qualitative case study research. The population in this study was the competence of students of class XII Airframe Powerplant expertise at the Bina Dhirgantara Aviation Vocational School taken randomly. Based on data analysis, the results of this study show that: Competence of airframe and powerplant expertise in Vocational School Bina Dhirgantara Surakarta on average 65% of learning at Vocational School Bina Dirgantara is less relevant to the industrial world.
The nexus between financial literacy and entrepreneurship ability among university students in emerging markets
Authors: Ogbolu A N , Sukidjo  
Published: January 2020

Abstract
This study investigates the level of financial literacy and entrepreneurship ability among university students in emerging markets while examining the relationship between university student’s financial literacy level and their entrepreneurial abilities. Data was collected by distributing 90 questionnaires to students of Yogyakarta State University, Indonesia covering cross educational majors. Out of the sample, a total of 84 returned completed questionnaires were used for analysis. The findings from this study revealed that 45% of the respondents were able to answer one of The Big 3 financial literacy questions correctly, 21.4% answered two questions correctly while none answered all three questions correctly. This implies that the level of financial literacy Yogyakarta State University is low and corroborates findings of similar studies done in Indonesia. However, the respondents reported a high level of entrepreneurial ability as almost 80% of the respondents reported having satisfactory levels of entrepreneurial abilities, 7% had an outstanding entrepreneurial ability while the remaining 13% had a considerable level of entrepreneurial ability. Using Pearson correlation analysis, the study revealed that although financial literacy and entrepreneurial ability are positive related, the relationship is however not statistically significant at alpha 5%.
The effect of the occupational health and safety practices on the boutique production quality
Authors: Fatimah I , Jerusalem M A 
Published: January 2020

Abstract
This study aims to find out: (1) the application of occupational health and safety in boutiques in the Special Region of Yogyakarta, (2) the quality of boutique productions in the Special Region of Yogyakarta, and (3) the effect of occupational safety health on the quality of boutique productions in the Special Region of Yogyakarta. This study can be categorized as an associative study using a survey method and a descriptive study related to fact collection, identification, and prediction of relationships within and between variables. The sample was selected using the random sampling technique referring to Isaac and Michael’s formulas with the error margin of 5%. From a population of 35 employees, the sample consisted of 32 employees was selected. The data were analyzed using the descriptive analysis technique. The hypothesis testing used the product-moment test. The study was conducted at Seyvia Charis Couture and Bridal Boutique, Gavrilla Fashion Studio, and Punky Rima Design of Indonesia. The results of the study are as follows. 1) The OSH application by boutiques in Yogyakarta was very good. This showed that employees and leaders have implemented occupational health and safety very well with the score of 1901 that can be categorized as very good. 2) The quality of boutique productions in Yogyakarta as a whole obtained the score of 2303 that can be categorized as very good. 3) The effect of the OSH application on productions is very strong on the stage of the production process with the correlation coefficient of 0.676 but it is getting weak on the final preparation and completion stages with the correlation coefficients of 0.426 and 0.330, respectively.
Studies on Nickel-based Bimetallic Catalysts for the Hydrodeoxygenation of Stearic Acid
Authors: Rafiani A , Aulia F , Dwiatmoko A A , Rinaldi N , Nurhasni  , Widjaya R R 
Published: January 2020

Abstract
Fatty acids, which are contained in vegetable oils, can be converted into alkanes through the hydrodeoxygenation (HDO) reaction, as an alternative fuel. In this study, the HDO of stearic acid was carried out in the presence of nickel-based bimetallic catalysts supported on Silica-Alumina (SiAl) in an autoclave batch reactor using decane as a solvent. Various metals, including Fe, Cu, and Co, were added into Ni catalysts using conventional wet impregnation method. Among others, additional Cu on Ni/SiAl increased the performance of the catalyst for the reaction.