bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modeling and verification of solar panel mesurement for Household scale
Authors: Hasanah Herliyani , Lestari Wiji , Susanto Rudi , Nuryani  , Purnama Budi 
Published: June 2020

Abstract
This research aims to build a modeling of solar panels that will be verified with the results of experiment. The measurements of the implementation of solar panels that have been installed at the household scale. Solar photovoltaic (PV) produces power that is affected by solar irradiation and ambient temperature. These two parameters have been the input values in solar panel modeling. Modeling PV cell simulationwas using Simulink Matlab. This modelingused two solar panels with a total capacity of 200 W which are installed in parallel and share the same voltage. This model is able to simulate the I-V characteristic curve and the P-V characteristic curve. Based on the results of measurements of the implementation of solar panels that have been installed in Sukoharjo, Central Java at the longitude location point 10.870902 and latitude -7.603960 with the capacity and electrical characteristics data of the solar panels that were the same as the modeling, the Root Mean Square (RMSE) results of 0.13784 and 0.31305.
Development of CNC machining II textbooks to increase the effectiveness of student learning in the mechanical engineering education study program
Authors: Muslim  , Basuki Nur , Riadi Selamat 
Published: June 2020

Abstract
This research is research development. The research model used in this research is the development of 4D (Four-D Model) which consists of four stages: the defining stage, the design stage, and the development phase. While the dissemination phase was not carried out because this research was only limited to the feasibility test and the effectiveness of learning media in the form of books. In this study, the respondents were 3 book experts, 3 lecturers who had CNC machine expertise competence in the Department of Mechanical Engineering Education, Faculty of Engineering, State University of Medan. The research instrument used to collect data in the form of questionnaire sheets and observation sheets. Data analysis was performed to determine the feasibility and effectiveness of the resulting CNC II / advanced book. From the results of this development research, it was shown that the developed CNC II / advanced book was suitable for use in learning advanced CNC courses. The results of book validation by book experts amounted to 86.67%, CNC exports amounted to 95.80.% Included in the very feasible criteria. The effectiveness of the advanced CNC learning book that was developed already meets the requirements of learning media with a percentage of positive student responses to the book of 96.11% of the criterion score, as well as an increase in student learning activities expressed in percentage
Observation and heuristics evaluation of student web-based application of SIPADU-STIS
Authors: Maghfiroh Lutfi Rahmatuti 
Published: June 2020

Abstract
Politeknik Statistika STIS has an integrated information system called SIPADU-STIS. One part of the system is a web-based application for students. Students use this system to support learning daily activities like check lecture schedule, grade, etc. This system was built by personnel and students. However, this new system was tested only by the black box method and tested to users with the System Usability Scale (SUS) questionnaire. The system has not been tested in terms of interface and interaction with users. Whereas the well-designed interface and user interaction can improve the quality of service to users (students). Therefore, researchers want to test the interface and interaction with users of the system. We conduct an observation of the application and evaluation of heuristics. The heuristic evaluation used is based on 10 principles by Nielsen. Respondents are chosen by students using convenience sampling. Based on the data obtained, all aspects still have shortcomings or problems, even though only 16.7% stated it. There is only one aspect that has a cosmetic problem that is the aspect of match between the system and the real world. Six aspects have minor usability problems, those are visibility of system status/feedback, consistency and standards, error prevention, recognition rather than recall, aesthetic and minimalist design, and help and documentation. There is one aspect that has a major usability problem, help user recognize, dialogue, and recovers from errors. Two of the last aspects that must be redesigned, are the aspect of user control and freedom and aspect of flexibility and efficiency of Use.
The development of audiobook interactive physics based on integrating Qur’an with demonstration tools for blind students
Authors: Alatas Fathiah , Solehat Devi 
Published: June 2020

Abstract
One of the teaching material for blind students is a textbook in braille. Carrying a thick braille’s book lead to be burdensome for students. Digitization like an audiobook became the key for disability students to read an information in a book form. The study aims to develop an interactive audiobook based on the integration of science and Quranic values for blind students. Research and development method with Purposive Sampling technique used in this research. Data collecting conducted from three Senior High Schools of Inclusion (Sekolah Menengah Pendidikan Luar Biasa) that are Pembina Tingkat Jakarta School of Inclusion (Sekolah Luar Biasa Pembina Tingkat Nasional Jakarta), A Tan Miat Bekasi School of Inclusion (Sekolah Luar Biasa A Tan Miat Bekasi) and Mekar Sari Bogor School of Inclusion (Sekolah Luar Biasa Mekar Sari Bogor). Validity level was measured by validity expert and the effectiveness was measured by student response during learning activities. The results indicate that the implementation of interactive audiobook based on the Quran integrating increase the level of student comprehension. Therefore, this research has added practical media that is considered necessary in physical learning for students with disabilities, however the utilization has to be frequently.
Development of virtual reality technology in environmental pollution media learning content for junior high school students
Authors: Ramansyah Wanda , Aini Nuru , Arkadiantika Irnando , Nur Satiantoro Arief Fatur Roqi 
Published: June 2020

Abstract
Virtual Reality is a learning media that allows students to independently find out, explore, and build their own knowledge in the context of learning resembling the desired environment in the delivery of learning content. The development of virtual reality has a role to bring students into an environment in this case the sea coast and as if students will experience the view of a clean or uncontaminated coastal environment and a polluted coastal environment. In developing this virtual reality product, the developer uses the ADDIE model which consists of 5 steps, namely: (1) Analysis, (2) Design, (3) Development, (4) Implementation, and (5) Evaluation. The trials in this study involved content experts, media experts, individual tests (3 students), small group tests (9 students), and large group tests (25 students). The result of content expert validation was 83% (High). The results of media expert validation were 90% (Very High). The results from individual tests amounted to 85% (High). Small group test results at 87% (High). Large group test results at 84% (High). The conclusion of this development research, virtual reality learning media about “environmental pollution” is very suitable to be used as a learning media to support teachers in delivering learning content.
Evaluating students logical thinking ability: TPACK model as a physics learning strategy to improve students logical thinking ability
Authors: Muzaky Ahmad Furqon , Sunarno Widha , Harjana  
Published: June 2020

Abstract
Physics has the character of logical thinking. The use of technology in physics learning encounters the problem. The purpose of this study is to evaluate students logical thinking ability and determine a physics learning strategy to improve students logical thinking ability. The subjects of this study were 81 Islamic boarding school students in Ponorogo. The research approach was used mix method. Instrument test research was used by giving Tests of Logical Thinking (TOLT) which developed by Tobin and Capie. Instrument test contains 10 questions that depict probabilistic reasoning, controlling variable, proportional reasoning, correlational reasoning, and combinatorial reasoning. The results show that the average students logical thinking ability occupies a level of concrete thinking with a score of 1,36. This finding describes the logical thinking ability was still being the lowest level. Therefore, alternative learning such as integrating with technology is necessary to improve the logical thinking ability of students. Integrating learning with technology can be done by TPACK model.
Identification of preservice biology teachers’ metacognitive awareness and metacognitive skills
Authors: Amin Astuti Muh. , Adiansyah Romi 
Published: June 2020

Abstract
Metacognition can make a significant contribution to learning, especially that related to intellectual ability. Students’ metacognitive awareness and skills can be developed through consistent implementation of appropriate learning designs and students’ progress monitoring. The current research attempted to identify students’ metacognitive awareness and metacognitive skills in a biology education context. This research involved 142 preservice biology teachers from STKIP Pembangunan Indonesia Makassar, UIN Alauddin Makassar, Universitas Pejuang Republik Indonesia (UPRI) Makassar, and STKIP Yapim Maros. This study employed a descriptive quantitative method where metacognitive awareness inventory (MAI) was distributed to gather data on the participants’ metacognitive awareness and an essay test was conducted to examine the students’ metacognitive skills. The results show that the students’ metacognitive awareness falls into very low category with the average score of 37,55 for planning, 37,97 for monitoring, 38,39 for evaluating, and 35,73 for revising. Based on the test results, almost half of the students (44,90%) are categorized can not really; none of them (0%) were super or ok; 13,63% of the students fall into development category; 39,49% into risk category; and 1,97% into not yet category.
Development and application of national exam based teaching materials for junior high school students using national education standard
Authors: Mustikasari I , Sajidan  , Karyanto P 
Published: June 2020

Abstract
Education is one of life aspect is currently required in 2013--revised in 2017--curriculum to have skills that must collaborate in realizing students who have character and have scientific insight. In the process of learning science at the unit level of education, especially the junior secondary level in biology, there is still a demand and need from practical aspects to improve teaching materials that are updated to increase student competency. The purpose of this study is to improve the competency of students based on the national examination results of students during the last 3 years from 2016 to 2018 decreased in percentage. This research was conducted by a descriptive research method. The subjects of this study were students of class XI in Surakarta Junior High School. Data on the results of national examinations for the last 3 years were collected using the National Education Assessment Center (PusPenDikNas) data and analyzed using the National Education Standard (SNP) instrument of 8 Standards. The results of the analysis of teaching materials used in these schools indicate that the highest percentage of gab or problems in the standard process is 2.78%. This shows that teaching materials that are still used in schools need to be improved, therefore teaching materials must be a concern in the learning process of student science.
An analysis of students’ error in completing the contextual problems based on Newman’s procedure
Authors: Kristianti L W , Retnawati H 
Published: June 2020

Abstract
The aim of this study is to determine the students’ errors in solving mathematical problems of the system of two-variable linear equations based on Newman’s Procedure in terms of students’ cognitive styles. The type of this research is descriptive qualitative research. The subjects were eighth-grade students of Pangudi Luhur 1 Junior High School in Yogyakarta 2018/2019. The research method used is descriptive. The data were collected through documentation, interviews, and test. The data analysis is done by data reduction, data presentation, and conclusion drawing. Based on the results of this study, it can be concluded that students still have errors in solving the story question problems of the system of two-variable linear equations. The cause of errors based on Newman’s theory in terms of the cognitive style of students is that students are not able to understand the questions well, students also have lack mastery of the material, so the students are confused in determining step-by-step work of the questions. Students also tend to be less careful in working on problems and are less accustomed to working on problems in a structured manner.
Example in concept map on discovery and reporting problem based learning accompanied by instructional techniques
Authors: Ikhsan Muhammad , Widoretno Sri , Saputra Alanindra , Sajidan  
Published: June 2020

Abstract
The research aims to calculate the example scores in CM by applying instructional techniques in the PBL discovery and reporting stage. This research was a classroom action research with planning, actions and observations, and reflection procedures. The participants were 35 high school students. Data collection techniques were the observation, assessment of students’ CM on the elements of example, performance assessment, interviews, and documentation. The data collected were the example CM scores and percentage of syntax implementation. Data validation used the triangulation method, which included CM example scores, interviews, and documentation. Data analysis with qualitative analysis, including data reduction, data presentation, and conclusions drawing. The results of the research in the pre-cycle, cycle 1, and cycle 2 respectively showed an average score of example CM was 14%, 20%, 60%, thus the percentage of the score of example CM has increased. The increase in the percentage of example CM scores because of the application of instructional techniques to the discovery and reporting stage of PBL.
Factors influencing interface design skills
Authors: Harimurti Rina , Nurlaela Luthfiyah , Winanti Elizabeth Titiek , Ismayati Euis 
Published: June 2020

Abstract
This study aims to reveal several factors that affect student’s interface designing skills. There are some variables that influence student’s competencies encompassing motivation and prior knowledge, which determine the success of maximizing student’s cognitive and interface designing skills. This study used quantitative research approach with 39 total university students. The obtained data were analyzed using Path Analysis that measured cause-effect phenomena occurred in a multiple regression. In accordance with the results of SPSS Amos, the value of Chi-Square was 0.236, Df = 1 with p = 0.627. As the p value was more than 0.05, so that the analysis model result was not significantly different from the data. The estimation value between the values of prior knowledge and interface designing skills was very strong (β = 0.912). This indicated that there is a significant influence of prior knowledge on interface designing skills, whereas, there was a weak relationship between other variables. Therefore, the analysis model was precise to portray the relationships between variables and the variable of prior knowledge became the most influential factor on student’s interface designing skills.
Comparison sensitivity of the differential item function (DIF) detection method
Authors: Khoeruroh Ulfa , Retnawati Heri 
Published: June 2020

Abstract
Differential Item Functioning (DIF) or often referred to as bias is a term that is not good, has a racial meaning, suppresses or is too fanatical about the object to be measured. Bias in a test is a test condition that is unfair, inconsistent, contaminated by factors outside the aspects to be tested and misuse of the test. The purpose of this study is to find out which method is the most sensitive in detecting the presence of DIF on items. The methodology used is to study literature from books, journals and study the results of research that has been done. There are many methods that can be used to detect DIF. These methods are the Mantel-Haenszel Method, the Chi-Squared Method of the Lord, the Probability Comparison Test Method, Item Characteristic Curve (ICC) and Extent Method According to Raju.
Development of discovery guided learning module based on character education and competitive education
Authors: Oktavia Yunisa , Atmazaki  , Zaim M. 
Published: June 2020

Abstract
This research entitled the development of an Indonesian language module based on a guided discovery learning method with character education and competitiveness. Background of the research are teaching material and reference books have not been able to make students critical, and the students’ reading culture is very minimal. There are still student characters that have not been shown following existing norms. The study aimed was to produce a module based on the guided discovery learning method with character education and competitiveness in Indonesian language courses that were valid, practical, and effective. The research method used was the research and development method with a 4-D model, namely define, design, develop, and disseminate. The subjects of the research trial were students of the technical study program 2018/2019 UMRAH academic year. Based on the results of the validity test of 88.31%, the effectiveness test was 9 students with grade A in the value range of 3.51–4.00, practicality test by lecturers was 88.22% and module practicality test by students were 84.52%. Based on the results of data analysis, it showed that the module was valid, effective, and practical to be used by students in understanding lecturing material in university.
Comparison of linear and quadratic bi-response semiparametric regression models using spline truncated
Authors: Khalil A A , Budiantara I , Zain I 
Published: June 2020

Abstract
Semiparametric regression is a regression model consisting of two components, namely the parametric and the nonparametric component. The parametric component is a component with curves are known and the nonparametric component is a component with unknown shape of the curve. Bi-response semiparametric regression is regression analysis which has two response variables with the combination of parametric and nonparametric curves. The purpose of this research is to compare the bi-response semiparametric regression model using spline truncated with component parametric linear and quadratic. In this research, the method that used for the estimation parameter is WLS (Weighted Least Square) and the selection of optimal knot points is done by looking at the minimum GCV (Generalized Cross-Validation) value. WLS is minimizing partial derivative based on a parameter in the model. Each the linear bi-responsese semiparametric regression and quadratic bi-responsese semiparametric regression using spline truncated has two parameters that are parameter for parametric and nonparametric components. The difference between the two models contained in the parametric component of the predictor variable and parameter matrix of parametric component

Y
=
X

β
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+
T

α
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is estimator linear bi-response semiparametric regression model and

Y
=
X

θ
^

+
T

φ
^

is estimator quadratic bi-response semiparametric regression model using spline truncated.
Thailand elementary school students’ critical thinking skills in mathematics education
Authors: Dewi Anastasya Kurnia , Slamet St. Y. , Surya Anesa , Syawaludin Ahmad 
Published: June 2020

Abstract
Elementary school students’ critical thinking skills in mathematics education are part of 21st-century learning competencies as stated in the Basic Education Core Curriculum B.E 2551 in Thailand. The study aims to investigate the Elementary School Students’ Problem Critical Thinking Skills in mathematics learning in Thailand. The subjects of this study were students of third-grade Chiang Mai Rajabhat University Demonstration School with a total of 32 students. The research instrument used the test of mathematical problems in time material and interview. The research data were analyzed qualitatively descriptive. The results showed that students’ mathematical critical thinking skills were best at reading the time in the form of an analog clock that is equal to 72%; on the subject matter the difference in the time and night time marks is 63%; while the problem of drawing time and night time marks is 51%. The conclusion of this research is the mathematic problem solving-skills in third-grade students in Thailand hasn’t been optimal. The results of this study provide information about the ability to solve mathematical problems in elementary schools that still need to be improved. Future research can be directed at improving the process of mathematical problem solving skills in elementary schools.
Developing a model of teaching patterns recognition based on sorting predict-think discovery for children aged 5-6 years
Authors: Ulni Elvira Khori , Suparno  
Published: June 2020

Abstract
This study aimed to: (1) determine the feasibility of concept of pattern learning model based on sorting predict-think discovery, (2) determine the effectiveness of concept of pattern learning model based on sorting predict-think discovery. This research implemented several steps developed by Borg & Gall. The research subjects consisted of teachers and 172 children in 9 kindergartens in Sleman, Yogyakarta. The data was collected by using expert validation sheets, teacher questionnaires, and observation results. The data was obtained from5 treatments and time series. The results revealed that: (1) the results of the development of pattern learning model based on sorting predict-think discovery were very feasible to use, (2) pattern learning model based on sorting predict-think discovery is effective in developing children’s ability in recognizing pattern. The effectiveness of pattern learning model based on sorting predict-think discovery was revealed by the significant improvements, after conducting five treatments for children 5 to 6 years old. The average ability of children to recognize linear patterns was 3.36, while the average ability of children to recognize cyclic patterns was 3.17, and the average ability of children to recognize hopscotch patterns was 3.03. Hence, the ability to recognize hopscotch patterns showed a slight increase. This happened since most children still have difficulty in memorizing, especially in drawing and creating patterns. Hopscotch patterns were patterns that have never been introduced and taught by teachers to children. Furthermore, all of children’s abilities to recognize patterns had improved.