bluuebunny/crossref_metadata_2025_split huggingface dataset:
Increasing productivity and marketing of bamboo craftsmen
Authors: Paryanto  , Nurhayati I , Indartono S 
Published: January 2020

Abstract
This service program is carried out in the context of lifting regional superior products, namely bamboo crafts from the villages of Brajan, Sendangagung, Minggir, Sleman. The main objectives of the research are improving the quality and quantity of products, increasing the level of comfort of facilities/facilities owned (production space, administration space and showroom), increasing marketing networks of partner small and medium enterprise (SME) products for the national level, and improving the function and role of cooperatives in the partner region. The method used is to formulate and carry out several activities that are solutions to problems faced by partners. The activity consists of two main activities, namely technology assistance in the form of production equipment (appropriate technology), construction of a showroom, website creation and enhancement of partners’ capabilities by providing various training and mentoring. Technology equipment seconded to partners is drilling machines, sandpaper machines and drying ovens. While the training carried out was training in colouring and preserving bamboo products, training on the use of internet media as a marketing medium, administrative and bookkeeping training, and cooperative training. The results achieved were SME Prinx Mas production capacity increased 12.5%, revenue turnover increased 9.5%, assets increased 5.6%, and the addition of a workforce of 1 person in the production department. In addition, SME Pring Gedhe revenue turnover increased by 5% and assets increased by 7.8%.
Airfoil aerodynamics optimization under uncertain operating conditions
Authors: Suprayitno  , Yu J C , Aminnudin  , Wulandari R 
Published: January 2020

Abstract
An aerodynamic robust optimization of a 2D airfoil is presented. Robust optimization aims to find a design which is less sensitive to small changes in uncertain quantities. Aerodynamic performance of airfoil is studied under variation of Mach number and angle of attach as operational uncertainties. The optimal aerodynamic shape of airfoil is computed by maximizing lift and drag coefficient ratio. Airfoil aerodynamic perfomance is evaluated using XFOIL solver. NACA 0012 is adopted as a basic airfoil design and optimized for robustness using Taguchi method. Signal-to-Noise ratio (S/N) of Taguchi method for larger the better is applied as robustness index. Nine of eleven variables of PARSEC airfoil parameters with 3 levels for each factors are selected as design variables and distributed using L27 fractional orthogonal array as the design of experiment. The optimization process does not only increase the average performance of lift-to-drag ratio but also decrease the standard deviation. The optimization strategy significantly improves the aerodynamic performance of the basic NACA 0012 from 21.76 to 36.79 or improves 69% of the robustness index.
Grain growth of powder metallurgy steel after heat treatment
Authors: Aminnudin  , Suryanto H , Suprayitno  
Published: January 2020

Abstract
Steel with very small grain has high strength but still have ductility. When the steel is heated to austenitic temperatures it can make the steel grains grow and reduce the hardness of the steel. To prevent this, it is necessary to know the effect of holding time on steel hardness. The hardness is indicating of grain growth of the steel. In this study, we examined the effect of holding time on hardness of very small grained steel. The heat treatment is carried out at 1100 degrees Celsius using an electric furnace. Micro hardness testing using the micro-Vickers method uses 300 grams of force and an indentation time of 10 minutes. Observation of microstructure is carried out with metallurgical microstructure. The etching solution for microstructure observation was nital solution. Heat treatment of steel powder mettallurgy with holding time of 60 minutes will cause a decrease in hardness from 261 to 207 and grain size growing from 3.2 μm to 6.3 μm.
Optimization of mini plantation tractor chassis by using multi-objective response surface methods
Authors: Choiron M A 
Published: January 2020

Abstract
To meet the requirement of the oil palm plantation industry, mini plantation tractor chassis is developed with increasing of transport capacity from 500 kg to 750 kg. The design goals of optimum design are safe, transport efficiency and lightweight chassis weight. The aim of this study is to determine the effect and optimum conditions of design parameters in the form of profile width, profile height, and profile thickness of mini plantation tractor chassis. The parameter design is set by 3 levels. Chassis modeling is done by using Finite Element Analysis software with 3-dimensional model. The deformation and stress behavior are observed on the chassis due to vertical bending and the torsional loading model. Multi-Objective Response Surface Methodology was applied to obtain the optimum design parameter conditions on the results of stress and deformation observation on the chassis. Based on the RSM optimization results, three optimum chassis design candidates were produced. In the vertical bending loading model, it is found that the profile width has the greatest influence to stress reduction contribution, and the profile height has the greatest influence to deformation reduction contribution. In the torsional loading model, the profile height has the greatest influence to stress reduction contribution, and the profile thickness has the greatest influence to deformation reduction contribution. The optimum design based on consideration in both loading models is profile thickness = 5.5 mm, profile height = 100 mm, and profile width = 55 mm.
The effect of interpretation of technical drawings and workshop facilities on machining practice competencies
Authors: Rofiq Z , Pamungkas G A , Rezani R 
Published: January 2020

Abstract
The purpose of this study was to determine the effect of students’ ability to interpretation of technical drawing and workshop facilities on machining practice competencies in vocational high school (VHS) of Muhammadiyah Prambanan. This research is an ex post facto research with the subject being 11th-grade students of Mechanical Engineering consisting of 4 classes with a total sample of 96 respondents. The data collection technique uses a questionnaire (Likert scale four answers), observation, and documentation where the data are analyzed using descriptive analysis techniques and multiple linear regression. The results of this study indicate that there is a significant effect between interpretation of technical drawings and workshop facilities on machining practice competencies in vocational high school.
The influence of improved engineering mechanic module in vocational high school
Authors: Nurhadiyanto D , Widiyastuti M F , Pratiwi H 
Published: January 2020

Abstract
The purpose of this study was to determine the influence of learning resources of engineering mechanics modules on student learning outcomes in mechanics subjects in vocational high school (VHS) 1 Sedayu. This study used an experimental method with a nonequivalent control group design. Experimental research designs used are pre-experimental designs, true experimental designs, factorial experimental designs, and quasi-experimental designs. The sample used was class X TP A as a control group and X TP C as an experimental group. The results of this study indicate that there is a significant increase in achievement in the experimental group students after using improved learning media.
The development of job sheet practice shield metal arc welding assisted augmented reality
Authors: Djatmiko R D , Fedrianto  , Pratiwi H 
Published: January 2020

Abstract
The purpose of this research is measuring the feasibility of a job sheet of shielded arc metal welding practice assisted augmented reality. This research used the method of research and development studies (R&D). The research was conducted on 32 students of class X at vocational high school Muhammadiyah 1 Salam. Data collection techniques were conducted using a questionnaire. The questionnaire was validated by an evaluation of the expert. The instrument test included 30 respondents outside the research sample. Data analysis technique performed with quantitative descriptive analysis technique percentage. The result of this research is in form of a job sheet practice welding SMAW using augmented reality.
Management analysis of workshop equipment and laboratory in vocational education
Authors: Ardian A , Munadi S , Jarwopuspito  
Published: January 2020

Abstract
This study aims to determine the management of workshop and laboratory equipment in vocational education. This research uses a qualitative approach with a case study method. The research subjects were the head of the department, the head of the workshop, the lecturer and the workshop technician. Data collection techniques used are observation, interviews, and documentation. The results showed that the workshop equipment management, namely: Workshop equipment planning carried out through several stages of the procedure: the needs analysis based on the curriculum, determine the priority scale, and determine the budget. This plan involves all personnel in the organizational structure. In the workshop, there are some activities done: preparation of materials and equipment, equipment lending, and use of the workshop. Preparation of practice materials is carried out at the beginning of each semester by following the existing curriculum. Equipment lending is carried out by providing equipment lending cards that are filled out before and after practice. Supervision of equipment in the workshop was controlled by a lending card and equipment usage as well as checking equipment before and after practice. The final results of this supervision will be in the form of an annual report given to the school as an evaluation for future planning.
Assessment of the air quality monitoring system in Sleman district by vehicle emission measurement
Authors: Arifin Z , Sutiman  , Solikin M 
Published: January 2020

AbstractSolving environmental problems is usually not directly linked with economic benefits. Everybody knows, for example, that a polluting factory’s chimney is harmful to the people. However, it is difficult to estimate the exact financial benefits of the installation of a new smoke filter. The results show the activities of the quality of air pollutants from mobile sources in the implementation of the emissions test in 2019 obtained an increase both in terms of water quality or quantity of the test vehicle. In terms of quality, the use of more modern technologies on the vehicle prove to contribute to the reduction of emissions from mobile sources. Increased the number of test vehicles and followed by a number of people who consciously want to do emissions testing. This condition reflects the improvement in public awareness of water quality, particularly with respect to pollution contributed by the vehicle. Besides, the benefits gained by the vehicle user directly is certainly the reduction in fuel consumption due to an awareness of its maintenance. This can be indicated through exposure removes emissions to be lower or meets the quality standard of emission.
An ultrasonic and temperature sensor prototype using fuzzy method for guiding blind people
Authors: Desmira D , Hamid M A , Irwanto  , Ramdani S D , Pratama T Y 
Published: January 2020

Abstract
A blind person must be protected from direct contact with unknown high-temperature objects in the surrounding environment. A system is needed to be able to detect the location and temperature of objects without direct contact. Ultrasonic sensors are used as object distance detectors and infrared temperature sensors are used as object temperature detectors without any direct contact. This system is processed with ATMega328 and information is conveyed to the user via buzzer sound signals and DC motor vibrations. The system as a whole is planted in a glove designed specifically to facilitate the user in using the tool.
Learning media-based android for technical drawing courses
Authors: Nopriyanti  , Kurniawan E D , Fatihah H 
Published: January 2020

Abstract
This type of research is research and development that aims to produce a valid and practical learning media based on Android. The validation of learning media is carried out by media experts and material experts. The product trial subjects are students of Mechanical Engineering Education who take technical drawing courses in the 2019/2020. The development model used is ADDIE. Trial respondents were chosen who represented the target group. Trials produce findings of weaknesses, deficiencies, product errors and suggestions. The results of the development of the expert validation of the material indicate the assessment of the usefulness of the learning media based on android to get an assessment score in the excellent category. Media expert judgment is found in a good category so the learning media product based on android is said to be valid. One to one trial evaluation is in the “Good” category, Small Group Trials in the “Very Good” category and the android “Very Good” category. So that it can be concluded that the learning media based on the android subject matter of engineering drawing is said to be valid and practical.
The implementation of Maple software to enhance the ability of students’ spaces in multivariable calculus courses
Authors: Purnomo E A , Winaryati E , Hidayah F F , Utami T W , Ifadah M , Prasetyo M T 
Published: January 2020

AbstractThe implementation of technology in learning becomes imperative and needs. Through learning, technology will be more meaningful and facilitate students in comprehending the materials. Based on the evaluation of the multivariable calculus courses can be concluded that the students had much difficulty in drawing materials graphic in dimensional space 3 (R3). Students had not been able to draw graphs of linear and quadratic equations well. To solve the problem, the researchers implemented the Maple software on the multivariable calculus courses. This study used a qualitative approach with a descriptive analysis method. The subject of research is the students’ of Mathematics education of Muhammadiyah Semarang University in Multivariable calculus courses in the academic year 2019/2020. The stages of learning have six stages, such as; 1) Students are introduced Cartesian coordinates in R3; 2) Students are given student worksheets; 3) Students are required to draw graphics in the Maple software; 4) Students are asked to compare pictures in student worksheets and Maple; 5) Students present discussion results; 6) Lecturers give feedback and conclude learning. Based on the research results, it can be concluded that the implementation of Maple Software can improve the ability of students’ spaces in Multivariable calculus courses.
Pancasila ethics and culture-based education model for vocational high school
Authors: Sutopo S , Nuryanto A , Sugiyono S , Paryanto P 
Published: January 2020

Abstract
This research aims to know the understanding of the educational community, especially at the vocational level of the practice of Pancasila in the field of education and formulate aspects in the Pancasila ethical and ethical education model. The type of research used is R&D research. The subjects in this study were teachers, students, and Principals of Vocational Schools in the City of Yogyakarta, in the field of Technology and Engineering expertise. While the objects in this study are Pancasila’s values, the behaviours of teachers and students, and the ethics and culture-based education model of Pancasila. Data collection techniques were questionnaires, observations, interviews, and documentation (triangulation). Data analysis used quantitative descriptive techniques. The results of this study are: (1) respondents believe there has been a disorientation in applying the values of Pancasila as the basis of the Republic of Indonesia as much as 80%; (2) systemic ethics and culture based education model of Pancasila which is developed from interrelated and facilitated inputs, processes, outputs and feedback.
Evaluation on implementation of quality management system in vocational high schools with CIPP approach
Authors: Mahendra I G B , Wiyono G 
Published: January 2020

Abstract
This study aims to find out: (1) the results of implementing ISO 9001: 2008 Quality Management System in terms of context, (2) input, (3) process, (4) and product in Vocational Schools in Bali. This research is an evaluation research with the Context Input Process Product model. The place for this research is SMKN 1 Kuta Selatan and SMKN 3 Singaraja. The research subjects were principals, vice principals, representative quality management teams, teachers, and students. The instrument of data collection is a questionnaire with scale 2. Data analysis techniques with percentage techniques. The results of the study can be seen: (1) the implemantation of ISO 9001: 2008 QMS in Vocational High Schools in Bali in terms of context is categorized as “very good”, (2) in terms of inputs included in the” very good “category, (3) in terms of the process is included in the “very good” category, (4) and in terms of the products included in the “very good” category.
Development of computer adaptive testing on the subject of Digital and Communication Simulation using item theory responses
Authors: Prasetyo D Y , Khairudin M 
Published: January 2020

Abstract
This article describes the development of an adaptive assessment model. This adaptive assessment model aims to determine the level of students’ abilities based on the difficulty level of the items. This type of research uses Research and Development (R & D). It uses the Borg& Gall model that explains, educational research and development is a process used to develop and validate educational product. This development aims to determine the characteristics of the items used as the basis for making computer adaptive testing products by using item theory responses to determine the level of difficulty of the questions, the distinguishing power of each item, and false guesses.
The development of intelligent control media for problem-based learning with power-of-two approach
Authors: Haryanto  
Published: January 2020

Abstract
The present study aims to (1) develop intelligent control (IC) media (hardware, software, and manual instruction) for Planning of Industrial Automation System (PIAS) course, (2) describe the results of the implementation (validation and verification) of the developed IC media, and (3) improve the quality of learning and student learning outcomes (LOs). This is research and development (R & D) carried out through two stages. (1) First, the development of IC media and operational function programs, (2) Second, the product implementation was carried out by involving students. The data were collected by observation, documentation, and questionnaire, and were analyzed by descriptive quantitative and evaluative techniques. The results obtained are as follows. 1) The developed learning resources, are perceived as Good (76%) by students, 2) The learning process using IC instructional media seems “Good” (71%), 3) Based on the predetermined targets, the researcher found that students make a very significant improvement in terms of the mastery of the PIAS course materials, specifically in IC System. As recorded in three assessment stages, students obtaining grade A and B are 20%, 60%, and 80% consecutively. The results show that in the third assessment, 80% of students have exceeded than the predetermined target of 75%.
Archiving learning video design in vocational high school
Authors: Indrawari C D S , Ninghardjanti P , Wirawan A W , Dirgatama C H A 
Published: January 2020

Abstract
Teachers are expected to have the ability to improve their professionalism through the development of learning media itself, so that the development carried out can answer the problems of students in the learning process. The purpose of this research is to produce an appropriate and fun archival design learning video design. This research method is a descriptive qualitative research approach. The results of the design of archival learning video design are expected to help students in the process of understanding the material presented by the teacher. This archival learning video can also be a guide for students in implementing learning in the business world and the industrial world later.
Le’eclaire with the substitution of millet flour as local foodstuffs utilization
Authors: Celestine P , Purwanti S 
Published: January 2020

Abstract
This study aims at: 1) finding the proper recipe of Le’Éclaire products 2) knowing the people’s acceptance of Le’Eclaire 3) knowing the nutrient content of Le’Eclaire. The object of this research is eclaire with millet flour substitution. This research employed Research and Development (R&D), with a 4D development model (Determine, Design, Development, and Dissemination). The determine stage was to find the recipe from many sources. The results of this research showed that: 1) The proper recipe of Le’Eclaire was containing with 50% millet flour substitution. The technique of making Le’Eclaire was baking, and then the package was using opp plastic and paper cup. 2) The public acceptance of Le’Eclaire products was seen from the limited-scale test with the overall average results of 3.73, while for the modification product was shown with the results of 3.8. The degree of acceptance on a broad scale was shown from the overall average of 3.8. 3) Le’Eclaire nutritional information based on proximate tests showed the nutritional content in 100 gr Le’Eclaire was 37.75% of water, 2.67% of ash, 9.37% of protein, 23.19%, of fat, 7.16% of fiber, and 19.87% of carbohydrates.
The Value of Averageness in Aesthetic Rhinoplasty: Humans Like Average Noses
Authors: van Zijl Floris V W J , Perrett David I , Lohuis Peter J F M , Touw Carolina E , Xiao Dengke , Datema Frank R 
Published: January 2020

Abstract

Background
The aesthetic ideal of the nose eludes clear definition. Averageness may be an important determinant of ideal nasal shape: research has shown that averageness plays an important role in the human perception of facial attractiveness.

Objectives
The aim of this study was to test whether an averaged nasal shape is attractive, and whether deviation away from average is associated with decreased attractiveness.

Methods
Photographic series of the face were obtained from 80 Caucasian female volunteers aged 25-40 years. A mathematically averaged composite image was created from the first 40 volunteers. Forty-one panel members were recruited to judge the attractiveness of the nose of each original image and the composite, based on a 5-point Likert scale ranging from 1 (very ugly) to 5 (very pretty). Deviation of nasal shape from average was calculated by principal components analysis of standardized nasal landmarks.

Results
Twenty-one respondents were male (51%). The mean age of the respondents was 35.3 [15.6] years. The rating of the composite was significantly higher than the distribution of ratings for the 80 original nose images (4.2 vs 2.8, t = 31.24, P &lt; 0.001). The rating of the original nose images correlated negatively with deviation from average shape (r = –0.40, n = 80, P &lt; 0.001).

Conclusions
In Caucasian females, a mathematically averaged nose is an attractive nose. Furthermore, the more an individual nose shape resembles the average shape, the more attractive it is rated. Calculating deviation from average before and after rhinoplasty may aid in objectively measuring aesthetic rhinoplasty outcome.