bluuebunny/crossref_metadata_2025_split huggingface dataset:
Learning arithmetic with back sound music classic romantic
Authors: Karlimah  
Published: November 2019

Abstract
This study is based on our previous research results, that classical music can improve the mathematical intelligence of elementary school students. But the learning model used has not been studied, therefore done further research to develop the model of learning mathematics with back sound classical music of the era romantic. The research method used is Design-Based Research (DBR). Development using four stages, adoption and modification of Reeves development design. Research subjects were the same teachers and students in the previous study. The study was conducted for eight months. The product of learning model is named Romantic Learning Arithmetic Model. The result of the research shows that the Romantic Learning Arithmetic Model is started from the beginning activity which is opening and conditioning learning, giving motivation to learn, doing apperception and learning orientation; the core activities of presenting learning, giving learning direction, independent learning experience, and presentation of learning outcomes, and the final activities of evaluation, follow up, and closing.
Mathematically gifted student’s ways of thinking on fractions
Authors: Ikhwanudin T , Wahyudin  , Prabawanto S 
Published: November 2019

AbstractThis research aims to analyse mathematically gifted student’s ways of thinking on fractions learning. The respondent was one mathematically gifted student of the 7thgraders in the junior high school. The research approach was qualitative. The data were collected through paper and pencil measure, observation, and interview. The data were analyzed by grounded theory with coding and constant comparison. The results showed five mathematical thinking types; those are quantification, schematization, symbolization, concretization and analogical thinking. The findings are then elaborated using some related theories to justify the results.
The analyzing of students’ learning obstacles in understanding proportion
Authors: Wijaya A P , Yunarti T , Coesamin M 
Published: November 2019

Abstract
In order to achieve learning objectives optimally, learning is designed with attention to students’ learning obstacles. The purpose of this research was to analyze the obstacles of junior high school students in understanding proportion. The subject of this research was 87 students of grade 7 at one of junior high school in Bandar Lampung, Lampung, Indonesia. This study used a qualitative method. The data of this research were obtained through test and interview. Based on the results of the research, 75.86% of students have obstacles in understanding proportion. The obstacles include ontogenic obstacle, epistemological obstacle, and didactical obstacle. The dominant obstacle that was appear was the didactical obstacle.
Designing an algebra learning sequence: the case of operations on algebraic expressions
Authors: Jupri A , Usdiyana D , Sispiyati R 
Published: November 2019

Abstract
This study aims to design a learning sequence for algebra learning on the topic of operations on algebraic expressions—which is taught for junior high school students. To do so, we used design research method, particularly the preliminary design phase. First, we compiled student difficulties in the topic of algebraic expressions from previous relevant studies. This compilation is used as a consideration for designing a learning sequence. Second, we designed the learning sequence based on the theory of realistic mathematics education. This theory is used because it offers meaningful mathematics for students. Finally, we conducted a focus group discussion to revise the design in order to produce a ready-use learning sequence for the teaching experiment. The result of this study included a sequence of algebra learning material on the topic of operations on algebraic expressions. In sum, we consider that the designed learning sequence for this algebra topic is more meaningful than the conventional learning sequence for students.
Relationship among pre-service teacher conception of geometry and teaching skills
Authors: Dewi I L K , Asnawati S 
Published: November 2019

Abstract
The purpose of this research is to find out the correlation between understanding the geometry concept of mathematics pre-service teacher and teaching ability, in explaining the concept of geometry systematically in a planned order, so that the students are easier to understand. Geometry concepts include (1) visual skills, (2) descriptive skills, (3) drawing skills, (4) logical skills, and (5) applied skills. The research method is an experiment, and the sampling technique is purposive. The research instrument is a practice test. Data understanding of geometry concept comes from the Final Test of Geometry course, while the data of teaching ability comes from teaching practice score on geometry topic. The statistical test uses the Pearson Product Moment correlation test and linearity test. The results of this research are: (1) there is a significant correlation between students’ concept comprehension ability and geometry teaching ability; (2) the relationship between students’ conceptual understanding and geometry teaching ability is in the medium category; (3) the magnitude of the influence between the understanding of student concepts and geometry teaching ability is 46.5%. It indicates that there is another factor of 53.5% that affects the ability of pre-service teacher teaching on geometry topics in addition to student concept comprehension.
Overcoming students’ misconceptions about simple harmonic oscillation through interactive conceptual instruction (ICI) with computer simulation
Authors: Maulidina W N , Samsudin A , Kaniawati I 
Published: November 2019

Abstract
Physics is a part of science that contains many concepts. To understand a physics concept student often experience misconceptions, including on simple harmonic oscillation subject. One way to overcome students’ misconceptions is to conduct teaching instruction that can facilitate students to promote their conceptual understanding. Interactive Conceptual Instruction (ICI) was developed to promote conceptual understanding. The data were obtained through 60 10th grade student that selected by simple random sampling. They were divided into two group which is 30 students in the experimental group taught ICI with computer simulation and 30 students in the control group followed traditional classroom instruction. The instruments utilized to determine students’ misconceptions were pre-test and post-test in the form 20 items four-tier diagnostic test related to simple harmonic oscillation. The results show that the value of effect size is in the “large effect” category. It can be concluded that the implementation of ICI with computer simulation effective in overcoming student’s misconception on simple harmonic oscillation subject.
Stakeholder view of competency profiles (pedagogical, professional, social and personality) graduate of the physics education
Authors: Dirgantara Y , Malik A , Samsudin A , Yuningsih E K , Chusni M M , Agustina R D , Fairuzillah M N 
Published: November 2019

Abstract
Departing from the increasingly fierce world of work, every study program at various universities needs to prepare graduates that are able to compete for the global world. This study aims to determine the level of competence of undergraduate graduates of physics education program UIN Sunan Gunung Djati Bandung, especially pedagogic, professional, social and personality competencies as well as efforts to improve the weakness of prospective teachers in welcoming the world of work. The method used is survey. The subjects of this study are graduates of physics education program. The instrument used is a questionnaire filled by the supervisor of graduate users. Analysis of data obtained based on a percentage of answers to respondents, then qualified as the good category, good, enough and less. The result of the research shows that physics education physics graduate of UIN Sunan Gunung Djati Bandung pedagogic competence has a good qualification (69%), professional competence has a good qualification (68%), social competence has a good qualification (67%) and well-qualified personality competence (71%). Thus, in general, the competence of physics education program graduates UIN Sunan Gunung Djati Bandung is good and acceptable by stakeholders.
An analysis of students’ mental models using temperature and heat transfer-diagnostic test (THT-DT)
Authors: Dewi R , Samsudin A , Nugraha M G , Liliawati W 
Published: November 2019

Abstract
Students’ mental models can be identified through a students’ concept understanding. In one study found that one of the students’ difficulties in learning physics is to understand the concepts of physics, so it can be identified that students have a low mental model. The purpose of this study was to analyse students’ mental models based on the level of understanding by using diagnostic tests. The instrument has been developed in the form of four tier test to analyse mental models in temperature and heat concept. The results obtained from the test, classified according to the category of mental models of students. This research method was used as the 4D model (Defining, Designing, Developing and Disseminating). The subject of the study was 26 eleventh grade students (average age 16 years) and has been studying the material temperature and heat transfer. Research results show that 7.37% students in scientific model level, 68.31% students in synthesis level, and 23.72% students in initial model level. In conclusion, the development of THT-DT four-tier test-items is one of potential diagnostic test instrument that able to analyse the level of student’s mental models.
Collaboration skills-based multimedia-based integrated instruction (CS–MBI2): a development study on refraction concept
Authors: Setiawan Y C , Samsudin A , Suhendi E , Novia H , Kaniawati I , Chandra D T , Siahaan P 
Published: November 2019

Abstract
Development of physics interactive multimedia is still rarely found, especially regarding to collaboration skills enhancement. This study is having a purpose to develop a Multimedia-Based Integrated Instruction (MBI2) that expected to define student’s collaboration skills profile. Researcher uses Sadiman’s model of development research method which consists of identifying students need, formulating instructional objective, formulating learning materials, developing evaluation instrument, producing, and revising. As a research sample, thirty-three eight grader students in Bandung are being involved in this study. Result shows each profile of student’s collaboration skills respectively 3.30; 3.06; 3.82; and 2.70 (by maximum student’s achievement score of 4). It can be concluded that development of Multimedia-Based Integrated Instruction (MBI2) research is capable for defining junior high school student’s collaboration skills profile on refraction concept.
Improved problem-solving skills of the student through cooperative problem-solving models related to fluid dynamic topic
Authors: Malik A , Kumala W , Mulhayatiah D , Aliah H , Darmalaksana W , Setiawan A , Chusni MM , Dirgantara Y , Agustina RD , Rochman C , Hermita N , Samsudin A 
Published: November 2019

Abstract
Problem-solving skills (PSS) were needed to prepare for the working world. Based on a preliminary study at one of Senior High School in Banjaran West Java, the average score of student Problem-Solving Skills (PSS) was low. This study aims to determine the improvement of PSS of student after applied Cooperative Problem Solving (CPS) models on dynamic fluid. The research method used was a pre-experiment with one group pretest-posttest design. The subjects of this study were students of class XI Science 2 selected by purposive sampling technique amounted to 30 people. The student’s PSS was measured through an essay test and a supporting instrument in the form of student worksheets. The results showed that there was an increase of PSS of students with <g> of 0.68 medium categories. Based on the paired sample t-test where tcount (12.24) > ttable (2.05) indicates that there was the influence of CPS models to improve PSS of students. The average results of the student worksheet analysis indicate that there was an increase student’s PSS at each meeting and the average value was categorized well. Thus, the CPS models can be used as an alternative learning model that can improve PSS of students on dynamic fluid.
Development and implementation of creative, solutive and smart teaching (CS2T) to improve 21st century capability on wave and optics
Authors: Syaodih E , Suhandi A , Maftuh B , Hermita N , Fratiwi N J , Samsudin A 
Published: November 2019

Abstract
The aim of this research was to develop and implement Creative, Solutive and Smart Teaching (CS2T) to improve 21st century capabilities on wave and optics. The CS2T is a learning approach that encompasses clusters of students employed collected to elucidate a problematic, comprehensive assignment, or produce a creation. We have already utilized the ADDIE model (Analysing, Designing, Developing, Implementing and Evaluating) as a research method. The samples are 37 students (15 boys and 22 girls, their ages were an average of 18 years old) at one of the primary educations in the West Java province of Indonesia on wave and optics topic. The improvement of 21st century capabilities has been diagnosed through a creative thinking instrument (CTI), problem solving test (PST) and observation sheet (OS). In the evaluating phase, the CS2T is able to improve student’s capabilities in employed collected and improve the realization of learning effects. In conclusion, primary students’ skills are able to be improved through CS2T on wave and optics topic.
Implementation of STEM education in Indonesia: teachers’ perception of STEM integration into curriculum
Authors: Suwarma I R , Kumano Y 
Published: November 2019

Abstract
Recently in America, Europe and Asia, STEM education has been viewed as an educational reform that answers 21st-century demands in an era of productive technology and information that trigger economic, political and demographic changes around the world. As a developing country, Indonesia is called upon to deal with these demands by developing qualified human resources through educational reform. STEM education is one of the strategies for achieving this goal. Finding possibilities for the integration of STEM in the science and math curriculum through teacher training programs is the first step in this implementation, whether or not STEM education can actually be included. This study took place in a school that uses two curricula (KTSP and the 2013 national curriculum). Results of an investigation of teachers’ perceptions showed that the 2013 national curriculum was more appropriate for the inclusion of STEM education than the KTSP curriculum. The impact of training on teachers’ perceptions was shown by significant differences before and after training.
An investigation of conceptual understanding ability K-11 student of linear motion
Authors: Dewi E , Muslim  , Samsudin A 
Published: November 2019

Abstract
Identification of conceptual understanding is an important first step in order to learning 21st skill. Understanding concepts is the fundamental ability of students to achieve high order thinking skills. Thus, the student has ability to better acquire a knowledge when learning of high order thinking. The purpose of this study is determining the conceptual understanding ability of the grade 11th in high school. This study has been implemented through a single case study research. Participant in this study are 36 students from a senior high school, consists of 22 female and 14 male students. The instrument used in this study is a test of the ability to understand concepts with multiple choice questions as many as 15 questions. The low ability to understand students’ concepts in each indicator with the percentage for indicators exemplifies (72.22%), describes the conclusions (55.56%), interprets (41.67), compares (47.22%), explains (57.64%) determines (72.22%) and classify (61.11%). The result from the study, the student in grade 11st are low ability of concept understanding ability.
Is integrating earth and space sciences (ESS) with art contexts necessary?
Authors: Putri M P , Liliawati W , Samsudin A , Hasanah L 
Published: November 2019

Abstract
The study aims to obtain facts related to the process of implementing Physics learning on Earth and Space Sciences (ESS) subject in Bandung area. This study has been conducted to 125 twelfth graders and 3 teachers from three high schools in Bandung area through a survey method with questionnaire fulfilment. The results state that the student interest, self-attraction and agreement of integrating ESS subject with other subjects are positively response. On the other hand, the learning should be improved. Physics learning requires the involvement of students in finding their own knowledge through interaction with their environment. However, students stated that the perceived obstacle in ESS learning was the lack of involvement of students in learning. In conclusion, ESS is important to integrate with art context for developing several aspects. Furthermore, ESS developing process is needed to help teachers bring their classes in a more interesting, effective and innovative way.
Needs analysis of web-based earth and space science learning materials for high school students
Authors: Zulika A M , Liliawati W , Ramalis T R , Utama J A , Samsudin A 
Published: November 2019

Abstract
The purpose of this study analyses needs of learning materials on Earth and Space Science for high school students. Earth and Space Science is one of the subjects taught in Physics. Often, the implementation of earth and space science learning is not conveyed and rarely available in other subject. The survey method has been utilized with questionnaires in three high schools around the Bandung zone. The number of respondents is 158 high school students and 3 high school teachers. The data has been obtained that earth and space science is more interesting if the learning materials was available. High school students often access the internet in term of collecting alternative learning resources beside teachers teaching. In conclusion, the researchers intend to develop web-based teaching materials for high school students. This web-based learning material for high school students has been developing.
Capacity Credit Algorithm and Index of the New Energy of Wind Energy and Solar Energy based on Big Data
Authors: Wei Wang , Wenguang Zhu , Hong Cheng , Ning Xiong , Liping Peng , Yifan Zhang 
Published: November 2019

Abstract
Since twenty-first century, many countries have accelerated their development, and the energy on the earth has been gradually consumed, which not only has caused the lack of energy, but also the environmental pollution. Therefore, people have paid much attention to the related problems. Based on the research of big data theory, the credibility algorithm of new energy was established in this paper. And through the establishment of wind farm power generation model, its reliability and indicators were analyzed. Thus, the feasibility of replacing old energy with new energy sources was explored. And through the analysis of the data, the reliability of wind farms and photovoltaic power plants was evaluated.
Micro-Mismatch Loss Analysis Based on Solar Cell IV Curve
Authors: Wang Lei , Liu Fuguang , Zhang Zhen , Shao Xi , Zhu Zengwei , Deng Shifeng 
Published: November 2019

Abstract
Solar cells are usually connected in series and parallel to meet the voltage and current requirements for application. Shadows on the surface of C-Si (crystalline silicon) solar cell modules lead to the mismatch of current and voltage between the cells, which is one of the main causes of output power loss. In this paper, an approximate calculation method based on IV curve model is introduced. The micro-mismatch is defined as the ratio of current mismatch is less than (ISC – Im
)/ISC
, usually less than 6%. According to calculation and experiment result, power losses caused by solar cells micro mismatch of Imp, Pm, Vm, FF in solar module were analyzed. The result shows that the introduced method can simulate the micro mismatch effect of solar cell application. The module power loss is not obvious, when cell matching is less than 1.5%. When the cells current mismatch is 5%, the influence of module power output is less than 1%.
Research and Practice on Course Design of Medical Physiology and Engineering under the Background of Cultivating Innovative Talents
Authors: Yingjiu Liu , Ning Li , Xinying Li , Fei Chen , Tianyao Wang , Rui Pang 
Published: November 2019

Abstract
This paper takes the medical electronics foundation course of medical imaging as an example., Through the introduction of four typical circuit design requirements and design methods, discusses the purpose and significance of increasing the course design of medical physiological engineering courses under the background of cultivating innovative talents., The method of curriculum design in medical courses, the main problems to be solved and the specific design scheme and results. According to the task and design index requirements of the selected topic, students determine the requirements of the overall design scheme, and draw the system block diagram of the overall scheme (pre-design stage); Analysis, input design, compilation and simulation of the underlying unit circuit; Draw the schematic diagram of the top circuit with the correctly compiled module of the bottom unit, and carry out compilation, debugging and simulation test. Write design report. Through course design, students can learn to search information, compare schemes, calculate circuit parameters, design circuit schematic diagram, make printing board, weld and debug components, test circuit performance, so as to improve students’ ability to analyze and solve practical problems. After the completion of the overall design, select the right device, apply the design scheme, complete the circuit board production, one step in place. At the same time, virtual and real contrast.
On the Necessity to Integrate Power Flexibility in Cooling Systems
Authors: Vuarnoz D , Niederhäuser E-L , Torregrossa D. , Gabioud D 
Published: November 2019

Abstract
Today, cooling systems are widely used, notably with the unprecedented growth of data centres and building space cooling. These thermodynamic systems are powered mainly with electricity, and their peak loads are generally associated with very high carbon footprints. At the same time, congestion of the grid due to high load or renewable power injection is becoming an issue for all actors involved with electricity (producers, providers, consumers, and prosumers). Actually, both the price and associated carbon footprint of electricity usually fluctuates along with the charge of the network. This paper discusses the integration of power flexibility (PF) in new and existing cooling systems to avoid a possible cold crunch in the near future. After defining PF, several cooling systems archetypes are presented. Three possible ways to integrate PF are explained: flexibility by thermal inertia and energy storage (thermal and electrochemical). While PF principally targets the reduction of stress on the electric grid, other benefits can also be achieved, e.g. mitigation of direct carbon emissions and decrease of costs related to operating the refrigeration system. We explain how better management of energy transits and possible imbalance in electricity networks can be achieved by thermal inertia. The choice of integrating thermal storage or electric battery is discussed, and both solutions are considered in a specific case study. The study aims at better management of power loads on electricity network caused by the cooling system and could be useful for anyone involved with grid management and/or refrigeration systems.