bluuebunny/crossref_metadata_2025_split huggingface dataset:
Challenges In Developing Work-Based Learning Among Diploma III Automotive Engineering Study Program, Faculty Of Engineering, Universitas Negeri Yogyakarta
Authors: Sutiman  , Sofyan Herminarto , Soenarto  
Published: November 2019

Abstract
Industrial development has been more challenging the technological and vocational education to strengthen their relevance with employment. Partnership with industry becomes the top priority that should be continuously pursued in order to optimize the learning process. One of the ways for continuously pursuing the optimization might be the Work-Based Learning (WBL). In relation to the statement, the study aims at identifying the obstacles within the implementation of WBL among the students of Diploma III Automotive Engineering Study Program, Faculty of Engineering, Universitas Negeri Yogyakarta and at identifying the impacts of WBL implementation on the students’ learning process. While the study was conducted, the data were gathered through in-depth interview, questionnaire distribution and field observation. Then, the data that had been gathered were analysed using the qualitative descriptive analysis technique. The respondents who had been involved in the conduct of the study were the university students who underwent their internship program in 2017 and also the Workshop Head and mentor from the partnering companies of automotive industry around the Province of Yogyakarta Special Region and the Province of Central Java. The results of the study show that several obstacles have been found in the following aspects: (1) partnership development with the industry; (2) duration and timing of implementation; (3) activity guideline; (4) evaluation instrument; and (5) monitoring and supervision by the lecturer. On the other hand, the impact of WBL implementation on the students’ learning process is that the WBL enforces the creation of ideas that might be useful for their development in the subsequent assignments.
Developing project-based learning model using jobsheet in vocational high school
Authors: Saputra TW , Wagiran  
Published: November 2019

Abstract
The purposes of this study were: (1) to develop a PjBL Model using CAD 3D Jobsheet, (2) to reveal the suitability of the developed model, and (3) to measure the effectiveness of the developed model. This study was RnD based on Richey and Klein (2010). The stages of product development consisted of analysis, design, development, and evaluation. The internal trials included the evaluation results of the product and instrument validation while the external trials included the result of students’ effectiveness on learning CAD and students’ responses on the jobsheet. The instruments used were an essay test, questionnaire, interview sheet, observation sheet using rating scale, and anecdotal records. The data were analyzed both qualitatively and quantitatively. The results of this study revealed that (1) the characteristic of the developed learning model included that the job that was made in the assembling structure comprised several parts, making it easier to divide the tasks, emphasizing on the character value, and having different levels of difficulty; (2) the developed learning model was feasible to use; (3) the learning effectiveness using the developed learning model on knowledge, skill, and creative thinking aspects was considered good. Furthermore, students’ responses to the developed learning model were regarded excellent.
Self-concept and self-care: implications for adolescents’ achievement
Authors: Puspitasari S , Budiastuti E 
Published: November 2019

Abstract
This study aims to shed light on: (1) self-concept, (2) self-care, (3) achievement, (4) the relationship between self-concept and self-care, (5) the relationship between self-care and achievement, (6) the relationship between self-concept and student achievement, and (7) the effect of self-concept and self-care on achievement. This study employed a quantitative approach. A sample of 95 students was selected as the research subjects using the probability random sampling technique. The instruments of this study were questionnaires and students’ report cards. The data were analyzed using the descriptive analysis technique and correlation. The results show that: (1) the students’ self-concept is in a high category (mean=137); (2) the students’ self-care is in a high category (mean=111); (3) the students’ achievement is good (mean=80); (4) there is a positive correlation between self-concept and self-care with a correlation coefficient of 0.578; (5) there is a positive correlation between self-care and student achievement with a correlation coefficient of 0.822; (6) there is a positive correlation between self-concept and students’ achievement with a correlation coefficient of 0.536; and (7) there is a significant effect of self-concept and self-care on students’ achievement.
Quality analysis of final test in the faculty engineering of Yogyakarta State University
Authors: Budiastuti E , Sugiyono  , Jerusalem MA 
Published: November 2019

Abstract
Final test is conducted to assess ability and skills within particular time. Before students take the test, the questions must qualify for good test. The previous research in Hospitality and Fashion Education Study Program reveals that the lecturers have not completely developed final test questions based on required principles of composing questions. This research aims to: 1) identify the quality of final tests questions of theory course, and 2) identify the quality of final tests questions of practice course including questions’ validity and reliability. This is a survey research. The population of this research was all final test questions in the Faculty of Engineering. Meanwhile, the sample of this research was final test questions of theory and practice courses. 63 samples were collected through purposive sampling technique. The quality of final test questions of theory course was analysed by employing Anates while the questions of practice course was analysed by employing Kappa. The data were analysed by employing descriptive analysis. The results indicate that: 1) difficulty level of multiple choices and essay questions is fair; 2) discrimination power of the questions is fair; 3) effectiveness of tricky questions is poor; 4) item validity of multiple choice and essay is fair; 5) reliability of multiple choice questions and theory is poor; 6) validity of questions of practice course is good; and 7) reliability of the questions is good with reliability index is > 0.7.
Facility standards of vocational schools: comparison of existing and modern facility designs
Authors: Suyanta  , Prianto E , Ismara I , Fitrihana N , Syauqi K , Wardoyo S , Marwanti  , Darmono  , Siswantoyo  , Wijaya A , Dwandaru WSB 
Published: November 2019

Abstract
The objective of this study is to compare the facility designs of existing and modern learning environment for vocational schools in accordance with 21st century learning. We begin the study with a comprehensive study on vocational schools that reflects the current condition and best practices. The next step is a comprehensive study of administrative documents and facility specifications needed to support vocational school graduates. Data and information in this study are analyzed and presented using a qualitative-descriptive approach. The method of analysis is carried out in three stages. The first stage is identifying the existing data in the field. The second step is to find the problems that become obstacles to the fulfillment of facilities in accordance with 4.0 industrial revolution. The third stage is to do an analysis between the current and modern conditions of the facilities in vocational schools. The locations chosen for the survey activities include East Kalimantan, Central Kalimantan, Jakarta, West Java, Central Java, East Java, and Yogyakarta. This study finds that the existing facilities in vocational schools are lacking and also concerning. This needs proper attention and handling such that these school facilities may be transformed into modern facilities.
Analysis Effect Ratio of Rotation Rotors and Tip Speed Ratio (TSR) On The Variations of Distance Rotors Counter Rotating Wind Turbine (CRWT)
Authors: Riszal A 
Published: November 2019

Abstract
One important issue global is climate changes. The reduce climate changes one of them issue of the wind energy utilization is the energy conversion from wind energy. Conversion efficiency of the wind energy usable into productive power. Enhanced technology wind energy development CRWT. The purpose of this paper analysis of the effect ratio of rotation rotors and Tip Speed Ratio (TSR) on the variations rotor distance rotors CRWT. This research was carried out the development of previous research with airfoil series S826 blade modeling from NREL. This research used Gambit Software and solver using ANSYS (FLUENT CFD), used turbulent model k − ε realizable. Results of this research the variations parameters CRWT, distance 0.5-0.1 and show performance maximum wind turbine the rear rotor shows an increase power of the turbine ratio of rotation rotors and TSR.
Design and Analysis of Coaxial Magnetic Gear Mechanism with Halbach Permanent-Magnet Array
Authors: Nur Fajri Saian , Siswanto Ibnu , Mustamil Khoiron Ahmad 
Published: November 2019

Abstract
The disadvantages of mechanical gear can be replaced by the advantages of magnetic gear related to transferring torque without mechanical touch, no gear lubrication, low mechanical loss, low vibration, and intrinsic overload protection. From the types of magnetic gear, coaxial magnetic gear is the most developed type. Halbach permanent-magnet arrangement in coaxial magnetic gear mechanism can offer higher on transmitted torque and also capable of increasing the magnetic field compared to radially magnetized. Then this paper aims to carry out the characteristic of coaxial magnetic gear with Halbach magnetized in steady-state condition. Furthermore, magnetic field and transmitted torque were investigated by commercial software ANSYS/Maxwell. Finally, by using 2D finite element method, the result shows the maximum torque with 2150.76 Nm.
Analysis Of The Effect Of Camshaft Duration On The Performance Of Honda Tiger 200 Cc Fuel Motor Tune-Up Drag Bike
Authors: Mahendra Sena 
Published: November 2019

Abstract
Camshaft modification is often done in drag race. This research was conducted to determine the performance of the drag race engine with camshaft modification on the Honda Tiger 200 cc which includes torque, power, and fuel consumption specifications (SFC). This experimental method uses 8 cc premium fuel at 1500 rpm, 2500 rpm, 3500 rpm, 4500 rpm and 5500 rpm. Torque, power and SFC of the Honda Tiger 200 cc combustion motor are measured above dynotest. The final result of the research is that there is an increase in torque and power of 14.5% respectively. Maximum torque and power is obtained using a camshaft with a duration of 270 °, which is 8, 012 Nm and 4, 612 kW at the same speed of 5500 rpm. On the contrary, the minimum torque and power are generated from the use of a standard 240 ° camshaft of 6, 850 Nm and 3, 943 kW at 5500 rpm. Specific fuel consumption (SFC) obtained has a small effect of 8.53%. The maximum specific fuel consumption (SFC) produced is 0.410 kg / kWh at 2500 rpm rotation with 270 ° camshaft usage. For specific fuel consumption (SFC) at least 0.375 kg / kWh at 2500 rpm rotation with 240 ° camshaft usage.
The Effect of Masses in the Determination of Optimal Suspension Damping Coefficient
Authors: Yudianto A , Kurniadi N , Wayan Adiyasa I , Arifin Z 
Published: November 2019

Abstract
The proper design of the suspension damper determines the ride quality and road holding performance of the suspension system against the road excitation. The objective of the present study is to investigate the effect of both sprung and unsprung masses on the root-mean-square vertical acceleration experienced by the occupants to determine the optimal value of the damping coefficient. Road excitation, 2-DOF mathematical model, and ISO 2631 weighting function were numerically modelled into three different cases in Matlab platform. The responses in root-mean-square value of acceleration were then evaluated. Further, the results were compared and the analysis was performed to determine the optimal value of the damping coefficient for the proposed suspension model. The obtained results indicate that varying the sprung masses with the proportional value of unsprung masses does not affect the root-mean-square value, but it increases the value of optimum damping coefficient by 131.5 Ns/m. Making the sprung mass constant increases the root-mean-square value by 0.005 m/s2 for each chosen unsprung mass. However, fixing the unsprung mass influences both acceleration and the value of damping coefficient.
Electro-mechanical Transmission Ratio Shifter of Rubber Belt Continuously Variable Transmission for Motorcycle Applications
Authors: Supriyo Bambang , Ariyono Sugeng , Tjahjono Bambang , Sumiyarso Bambang 
Published: November 2019

Abstract
This paper introduces an electro-mechanical transmission ratio shifter of rubber belt continuously variable transmission (CVT). The CVT basic system consists of primary pulley (input), secondary pulley (output) and a rubber belt. This belt connects the primary pulley to the secondary pulley and tranfers the speed and torque from the input to output by means of belt-pulley contact friction. Each pulley set has one fixed and one sliding pulley sheaves. The axial movement of primary sliding pulley sheave is actuated by an electro-mechanical system consisting of the DC servomotor, actuator gears and cam mechanism, while the secondary sliding pulley sheave is constantly pushed by contra spring to mantain the overall belt tension and to prevent belt slip. By controlling the DC motor revolution, the axial position of the primary sliding pulley sheave can be adjusted to vary the primary belt-pulley contact radius, which in turn mechanically changing the secondary belt-pulley contact radius and finally changing the transmission ratio. The relationship between motor revolution, primary belt-pulley contact radius, secondary belt-pulley contact radius and transmission ratio can be determined based on mathematical equations of variator geometry, the total gear ratio of the actuator gears and cam mechanism
Effects of Fuel Injection Pressure to Fuel Consumption and Exhaust Gas Emissions of SI Engine
Authors: Sriyanto Joko , Budiman Agus , Irfan Majid Akmal , Al Huda Luqman , Chaerul Yuswono Lilik , Suyanto Wardan , Sukoco  
Published: November 2019

Abstract
The present study investigated the effects of fuel injection pressure to fuel consumption and exhaust gas emissions for the Spark Ignition (SI) engine. A series of experiments were carried out in 4-cylinders gasoline engine with capacity of 1500 cc. The default fuel injection pressure was 2.8 kg/cm2. In this study, the fuel injection pressures were varied from 1.4 to 4.2 kg/cm2. The engine speeds were retained on 800, 2000, and 3000 rpm. Fuel consumption was evaluated by using a burette under static condition and a gas analyser was used to measure exhaust gas emission. As a result, fuel injection pressure affects significantly to the fuel consumption and exhaust gas emission. The lowest fuel consumption and gas (CO and HC) emissions were reached when the injection pressure was 2 kg/cm2 for all engine speeds. When the injection pressure indicated above and below the default engine specification, a higher fuel consumption and gas emission occurred. Therefore, a better control of the fuel injection system needs to be considered during the engine operation to reduce fuel consumption and exhaust gas emission.
Performance comparison of CATA’s information retrieval system application vs WTS
Authors: Purnama Jajang Jaya , Rahayu Sri , Sfenrianto  , Nugraha Fitra Septia , Nurfalah Ridan , Nawawi Hendri Mahmud , Shidiq Muhammad Ja’far , Ichsan Nurul , Fatah Haerul 
Published: November 2019

Abstract
Searching for data or documents that are always a necessity in the world of education, work, research an others requires convenience so that time efficiency occurs. This is supported by the emergence of various Information Retrieval system applications, one of which is cata, which is built on the Java programming language and applies the Generalized Vector Space Model method which can search based on similar keywords. Other facilities need to be developed, one of which is by applying the stemmer porter algorithm applied to the WTS (Web Tokenization Stemming) web which is built with the laravel framework that can search data or documents simply by typing the basic words so that searches are easier and faster.
The development of REST API-based android application for Micro, Small and Medium Enterprises (MSME) in Purbalingga Regency
Authors: Wijayanto Bangun , Maryanto Eddy , Rahayu Swahesti Puspita , Iskandar Dadang 
Published: November 2019

Abstract
Micro, small and medium enterprises (MSMEs) have an important and strategic role in national economic development. Purbalingga Regency has an area of 777.64 Km2 consisting of 18 Subdistricts with contours of the region which mostly consist of mountains, access to communication and dissemination of information regarding the existence of job vacancies, Micro, Small and Medium Enterprises (MSME) products are absolutely necessary so that the existence of Micro, Small and Medium Enterprises (MSMEs) can improve the standard of living and the economy and equalize employment, especially in the Purbalingga region. The application made in this study is an android based application that can be used by entrepreneurs in the Purbalingga region to register their MSMEs and inform and process job vacancies. The application developed based on the REST (Representational State Transfer) architecture is proven to facilitate the process of data exchange between platforms and systems.
Analysis the use of P2P lending mobile applications in Indonesia
Authors: Wang Gunawan , Richad  , Octavius Ong Yuli Biena 
Published: November 2019

Abstract
Nowadays, the development of technology is developing so fast and has touched every aspect of human life, from education, health to financial services to the community. One of the technological developments in the field of financial services is the P2P Lending application where people can borrow online. The development of the use of P2P Lending applications is so fast that it reaches one million users as of May 2018, but in the journey, there are many cases that affect users both socially, ease and performance when using the P2P Lending application. Therefore, the authors conducted a study to look at the influence of Performance Expectancy, Effort Expectancy and Social Influence on Behavioural Intention on the Use of P2P Lending Mobile Applications using Regression statistical tests. The research result explains the positive influence of these three factors on Behavioural Intention using P2P Lending applications which are moderated by Age and Gender.
Information retrieval system in text-based skripsi document search file using vector space model method
Authors: Azis Mochammad Abdul , Hamid Abdul , Fauzi Ahmad , Yudhistira  , Yulianto Eko , Riyanto Verry , Ridwansyah  , Sfenrianto  
Published: November 2019

Abstract
Speed and simplicity in the process of finding documents and information have become a necessity in the campus library. The speed in finding a skripsi document that is currently still very long to find the data and more simple in displaying what you are looking for then we aim to search and find skripsi documents in a digital library at a private university in Jakarta more quickly and display what which is searched precisely. An approach is needed using the VSM method that encourages without complete keywords, and to see the effectiveness of research searches. The results of the VSM method can be applied for the development of prototype applications. The prototype used to facilitate the process of searching or finding the documents and information needed is fast and simple.
Agricultural Information Application Design using User Centered Requirements Engineering
Authors: Nurrifqhi Arian , Widowati Sri , Imrona Mahmud 
Published: November 2019

Abstract
In Indonesia there are 43,55 percent of low-education people where majority depend on life as farmer and the needs of farmers for information in agriculture are very diverse. So far, farmers have only used agricultural information for generations. Although technology has entered the agricultural sector, such as the use of smartphone devices. However, its use is still not productive because there are no mobile applications that can provide integrated agricultural information suitable to farmer needs. So that the User Centered Requirements Engineering (UCRE) method is needed as a process of classifying farmers information needs that are very diverse and packaged into an integrated agricultural information application design model. The results of the application design obtained usability size by 80.32% and correctness by 79% so that, it illustrates a good quality value of the application based on the need for usefulness and accuracy of information on the McCall method testing.
Effects of temporal frequency towards visual roughness perception by drifted grating stimulation
Authors: Syafiq M U , Sadiah S , Shaameri A Z , Sakri F M , Azizan M A , Haniff M F 
Published: November 2019

Abstract
Previous studies proved that in addition to spatial characteristics function in extracting roughness information, there is potential roughness dependability across changes in the temporal mechanisms of textured surfaces. In the present study, we created temporal coding mechanism by converting fine spatial structure surface into a temporal drifting pattern. We proposed that regular spatial structure of gratings with variation of temporal mechanism have different influence toward roughness perception. Results showed massive individual differences of roughness perception between subjects, suggesting that a combination of spatial and temporal mechanisms accounts for perceptual judgments of roughness. We suggest that visual roughness judgment was determined by spatial in grating stimulation, and improvement is needed in spatial components before temporal coding of visual roughness can be declared.
Analysis of smart house power savings with on-grid photovoltaic power system
Authors: Nurfaidah Y , Wibawa I P D , Aprilia B N D , Ekaputri C , Reza M 
Published: November 2019

Abstract
The use of renewable energy is needed in saving electricity from fossil fuels. The power data logger is used to determine the total household energy usage according to real-time behaviour. In this research, use of total energy used for the design of solar panel energy installations uses the Helioscope and Homer applications to find out how much power can be saved, the total Net present cost (NPC) by grid and solar panel, and the initial capital in installing solar energy panels. In a 2.200VA household with electrical energy according to consumer behaviour, which is around 9.82 kWh installing seven 300Wp solar panels is a maximum installation for 2,200VA powered residential.