bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of augmented reality (AR) media on conformation of alkanes and cycloalkanes concepts to improve student’s spatial ability
Authors: Kodiyah J , Irwansyah F S , Windayani N 
Published: May 2020

Abstract
The purpose of this study is to apply the Augmented Reality (AR) media to improve the student’s spatial ability on alkanes and cycloalkane conformation. The method of this study was quasi-experimental control group pretest-posttest design for the second-semester students of the Chemical Education at UIN Sunan Gunung Djati Bandung. Data carried out through tests and non-test (worksheet and observation), and further analyzed using statistical methods by mean of SPSS version 23. The results showed that the student’s spatial ability on conformation of alkanes and cycloalkanes was increased with N-gain results categorized as moderate (mean 0.58). This means that AR conformation can visualize the movement of an object.
Public perception in Majalengka (Indonesia) toward citizen science concept
Authors: Aripin I , Hidayat T 
Published: May 2020

Abstract
Public participation in scientific research, known as Citizen Science (CS), is currently becoming a trend that continues to increase in many countries, including Indonesia. The involvement of citizens in helping scientists to collect, identify, and interpret scientific research data can assist researchers in obtaining more accurate findings. Citizen participation in scientific research in Indonesia remains low. The purpose of this study was to describe and analyze the perceptions of citizens in Majalengka (Indonesia) towards Citizen Science Concept (CSC). This research is a descriptive study with a survey method. Questionnaires and interviews were used to collect research data. A total of 105 respondents were involved in this study. Results showed that 67.1% respondents did not know about the CSC, whereas 65.7% respondents did not have adequate scientific research knowledge. However, 71.4% respondents were interested in being involved in Citizen Science project and has a high motivation to become a citizen scientist. This study is expected to contribute to the development of citizen science programs in higher education level.
Testing validity inferences of science motivation questionnaire (SMQ-II) instrument: Rasch-based analysis with Indonesian secondary students
Authors: Aini R Q , Rachmatullah A , Roshayanti F , Shin S , Lee JK , Ha MS 
Published: May 2020

Abstract
Examining science motivation is essential for science learning in the classroom, even more, science motivation is often related to students’ achievement and performance. The test of science motivation has broadly employed and some of the instrument has been translated into a local language where the instrument used. The current study explores the validity evidence of Science Motivation Questionnaire II (SMQ-II) by IRT-Rasch based analysis using Test Analysis Models ‘TAM’ Package v. 3.1-45 in R software from Indonesian context. This study reveals construct validity of SMQ-II instrument based on The Standards for Educational and Psychological Testing using Messick’s (1989) validity theories and construct validity. The data collected from 984 Indonesian middle and high school students. As result, the current study had SMQ-II validity evidence which includes (1) Dimensionality of the instrument using Exploratory Factor Analysis and Rasch-analysis likelihood ratio approach, (2) Expected A Posteriori (EAP) reliability and Weighted Maximum Likelihood Estimation (WLE) reliability, (3) Item fit and item properties, (4) Wright Map using Rasch modeling. The result of construct analysis shows that the instrument was appropriate with a theory where the construct was categorized into five dimensions, all the items of SMQ-II fit the rasch modelling, and the internal reliability of each dimension is categorized as good. In general, the current study suggests that SMQ-II instrument of Indonesian version is adequate to be implemented in Indonesia.
Implementation of education for sustainable development to enhance Indonesian golden generation character
Authors: Amran A , Jasin I , Perkasa M , Satriawan M , Irwansyah M , Erwanto D 
Published: May 2020

Abstract
The study aims to measure the improvement of Indonesian golden generation character after implementation of education for sustainable development (ESD). The data were collected by using the character self-assessment that given to senior high school students in nine provinces spread in the western, central and eastern regions of Indonesia. The instrument was adapted from character education indicators by Ministry of Research, Technology and Higher Education and the combination of sustainable development learning indicators. The result shows that mostly the character aspects of Indonesian golden generation can be enhanced. ESD character model can develop several characters of students but still need more time to enhance student’s critical attitude and creativity. Besides, it can inferred that implementation of ESD in science education, biology, physics, and chemistry subject can be recommended by using several learning models, of which one of them is ESD character model.
Analysis on readability of scientific literacy enrichment book on earth science concept
Authors: Puspaningtyas A A , Hernani  , Suhandi A 
Published: May 2020

Abstract
The gap between Earth Science material on PISA and on the textbook used at school, encourages research related to the development of scientific literacy enrichment book on Earth Science concept that can support and complement the school textbook. As the learning material source that are used independently, the developed scientific literacy enrichment book is required to have good quality texts that suit to student’s reading level. The purpose of this study was to analyse the readability of science book especially scientific literacy enrichment book on earth science context that developed based on scientific literacy competence on PISA 2015. Method on this research was descriptive quantitative with determining main concept on passage as instrument to collect data and Raygor Graph to analyse book’s reading grade level. Passage on instrument were passages without graph, picture, or formula. Data collected included main concept explanation for determining passage readability percentage and difficult words for determining reading level of the passage. Participants that contribute on this research were 7th grade students at one of junior high school in Cilacap distric in Central Java, Indonesia. Data showed that readability percentage of the passage was 56% and categorized as readable. However, it also concluded that the passages were more suitable for 8th grade student’s reading level. It can still be concluded that even though some texts were more suitable for higher class, the developed book was still readable as an enrichment book.
Need assesment for development of inquiry based learning materials using PhET media to enhance students’ science process skills
Authors: Sudewa P H , Nur M , Wasis  
Published: May 2020

Abstract
This study is a preliminary stage on development learning materials using inquiry model and PhET media to enhance junior high school students’ science process skills. The need assessment is aimed to give preliminary understanding in term of curriculum, learning theory, challenge and needs in the future. The data is gathered by observation, interview and documentation methods. Descriptive analysis had been chosen as the data analysis method. The result showed the following facts. First, the implementation of Curriculum 2013 with inquiry learning model and supported by PhET Media is necessary to improve the students’ science process skills. Second, the students need to have competencies in affective learning outcome, psychomotor skills, cognitive product and process skills. Third, the set of learning materials needed are including syllabus, lesson plan, students’ book, students’ worksheet and assessment sheet in density and buoyancy topic for the eight-grade junior high school students of SMP Lab Undiksha Singaraja.
The logic gate board game for promoting intrinsic motivation and understanding in the science museum
Authors: Chantarapimon P , Nokkaew A , Laosinchai P , Wongkia W 
Published: May 2020

Abstract
Mostly, in museums, logic gates were communicated by permanent exhibits. Our logic gate board game was created to be an alternative for communicating the content and developing children’s self-motivation. Three logic gates—AND, OR, and NOT—were embedded in the board game. The main goal was to encourage the children to create their own strategies to complete a mission by using conditions (gates). A fairy tale was used to engage the children to play the game. We investigated children’s understanding and intrinsic motivation after playing the board game. The participants were 21 primary children (grades 4– 6) who participated in a one-day camp at the science museum. They were introduced the rules and the context of the game before playing the game. During the gameplay, their interactions were observed. They were assessed by completing the test and the survey consecutively. Then, a debriefing session was held at the end of the assessment. Some were interviewed to investigate both their understanding and motivation. The results of the survey and interview show the success in promoting the children’s intrinsic motivation particularly, the enjoyment, concentration, and interest. From the observation, it seems that the children were completely focused throughout the game. Besides, most students could develop their understanding of the logic gates through the board game. Supported by the interview result, the children mentioned the strategy they used to complete the mission which required their logical thinking. However, it seems that the children still could not apply knowledge gained from the board game to the real-life problem.
The influence of read, answer, disscuss, explain, and create (RADEC) learning model on the concept mastery of elementary school students on the water cycle topic
Authors: Setiawan D , Sopandi W , Hartati T 
Published: May 2020

Abstract
This study aims to analyse the effect of Read, Answer, Disscuss, Explain, and Create (RADEC) learning models on the concept mastery of elementary school students on the topic of the water cycle. The research used a quasi-experimental method and the participants in this study were 38 students of the experimental class and 39 students of the control class. Data was collected using open ended test items. The pretest scores of the experimental and control classes were 48.02 and 45.67, respectively. After the implementation of RADEC model, the posttest scores of the experimental and control classes were 85.85 and 79.05, respectively. Based on the Mann-Whitney test, the significance value was 0.00 meaning 0.00<0.05. Thus, it can be concluded that the RADEC model has a positive impact, that is, it can improve the concept mastery of elementary school students on the topic of the water cycle.
Computer assisted instruction (CAI)-based learning: instructional need for pupils’ conceptual understanding of water cycle?
Authors: Nurlaili S , Sari D R 
Published: May 2020

Abstract
This study is aimed to identify the Computer Assisted Instruction (CAI) based on learning as an instructional need for students’ conceptual understanding about water cycle. Qualitative descriptive method was used in this study. The data collection used mini interviews and test. Participants were three students average 11-13 years old from different schools. The multimedia-based CAI application used by the researcher to understand pupils’ conceptual understanding of the water cycle is implemented on laptops or desktop computers used Windows operating system. The result showed that pupils’ conceptual understanding of the water cycle are still lack and have many misconceptions can be seen from the results of students’ test when drew water cycle. The sustainable development will be achieved if the instructional needs through improvement of CAI are fulfilled.
Smart edu: smart city in a learning system to build collaborative knowledge on lectures deepening science material
Authors: Zulkarnaen R H , Setiawan W , Rusdiana D , Muslim  
Published: May 2020

Abstract
Technology is created to facilitate human performance. Technology develops every time so it becomes a major need in life. Industry era 4.0 is one example where the existence of technology is the main key in life. In this article we develop the use of technology in learning systems. The Smart Edu program was used as the main project in the development of this research. The research was conducted in lectures on the deepening of science materials with research and development (R & D) methods of the programs developed. The development of this program adapts the transparency of smart cities that can connect the existence of a factual environment into the lecture system. Students, lecturers and even teachers in the field can access this program with a predetermined portion. With the nature of Transparency, this program can build collaboration from these three things so that full learning can be created covering the theoretical and factual sources from the field.
Effect of verbal creativity on problem solving abilities of junior high school students
Authors: Rosidi I , Hidayati Y , Hadi W P 
Published: May 2020

Abstract
The purpose of this study was to determine the effect of verbal creativity on the problem-solving ability of junior high school students. TASC framework learning in environmental material applied in 7th grade. The samples taken were 30 students, 11 male students, and 19 female students. Based on the results, there is an effect of verbal creativity on the problem-solving ability with a significance value of 0.000 (< 0.05) with a contribution of 87.5%. Path analysis shows that each indicator of verbal creativity has a significant effect on problem-solving ability. Learning with the TASC Framework encourages students to develop creative thinking skills and student problem-solving.
Revitalization of Science Teacher Community to Accelerate Competency Achievement of Science Teacher in Urban Area
Authors: Hayu W W R , Permanasari A , Sumarna O , Hendayana S 
Published: May 2020

Abstract
In line with the Industrial Revolution Era 4.0, teachers must also try to improve competencies by the demands of the times. The Science Teacher Community is a very relevant vehicle for building the profession of science education. Descriptive research has been carried out to observe the profile of activity in the Science Teacher Community, from excellence to limitations. The results of the observations can recommend solutions to improve the quality of Science Teacher Community activities to be able to accelerate the achievement of teacher competencies. The study was conducted by distributing open questionnaires to 38 science teachers in the urban area of the Regency. Content questions related to Science Teacher Community activities needed. The results of the study show some weaknesses in Science Teacher Community activities. Most respondents stated that there were time and distance constraints when participating in Science Teacher Community activities. Respondents were able to review their weaknesses in content (about physics), management and pedagogical practices of related content in developing 21st-century skills. They also showed weaknesses in IT usage. The recommended recommendation is to manage the practice of Science Teacher Community activities based on blended learning, focusing on efforts to overcome weaknesses in content and pedagogy content knowledge (PCK).
The effectiveness of Multicultural Education through traditional games-based inquiry toward improving the ability of critical thinking
Authors: Dewi N R , Rizkiana F , Nurkhalisa S , Dwijayanti I 
Published: May 2020

Abstract
The aim of this research is to know the effectiveness of multicultural education through traditional games in science learning based on inquiry learning model for developing the critical thinking ability in Junior High School Students. The research design used in this study was quasi-experimental design with non-equivalent control group design. Data were collected by using purposive sampling method of data collection. It was found that N-gain of experimental class has a higher value than the control class in the fifth aspect of critical thinking. The significance of critical thinking skills of the experimental class gained t-count = 18.712 and t-table = 2.030, while the control class is obtained t-count = 14.355 and t-table = 2.030. t-count > t-table then H0 rejected and Ha accepted. Differences in students’ critical thinking results showed that the average grade in the experiment class higher than the control class with t-test of 5.707 to 1.9944 t-table (df = 70, α = 5%). Traditional game based on multicultural learning is able to encourage a critical attitude because it makes students more flexibility in thinking. It could be concluded that traditional games based on multicultural education can improve critical thinking in the student in all aspects.
Chemical forms of rhodium ion in pure water and nitric acid solution studied using ultraviolet-visible spectroscopy and first-principles calculations
Authors: Watanabe Shinta , Sato Toshikazu , Harigai Miki , Inaba Yusuke , Takeshita Kenji , Onoe Jun 
Published: May 2020

Abstract
We have investigated chemical forms of rhodium (Rh) ion in nitric acid solution by using spectroscopic and first-principles methods, in order to develop the disposal of high-level radioactive nuclear liquid wastes (HLLW). The electronic structure of Rh complexes in both pure water and nitric acid solutions was investigated using ultraviolet-visible (UV-vis) absorption spectroscopy. Comparison with many-electron calculations indicates that Rh ion forms an octahedral bidentate complex coordinated with three nitrate ions, [Rh(NO3)3], in both pure water and nitric acid solutions. This is consistent with thermodynamic prediction. Since the overall feature of UV-vis spectra of the Rh complex remained unchanged in a range of 0-3 M nitric acid solutions, the structure of the Rh complex was found to be stable in the range. In addition, since no significant changes in UV-vis spectra of Rh complex were observed under γ-ray radiation, the Rh complex, [Rh(NO3)3], can be expected to be stable in actual HLLW.
Supramolecular Rare Sugar
Authors: Ishii Tomohiko , Senoo Tatsuya , Taguchi Hiroaki , Sogo Kouta , Huy Bui Quoc , Taniguchi Norito , Katsumoto Syuichi , Nagayama Natsumi , Sakane Genta 
Published: May 2020

Abstract
We introduce rare sugars including their derivatives and supramolecular rare sugars, that have been actively researched at Kagawa University, Japan. Although the rare sugars are special sugars which hardly exist in nature, we has succeeded in mass synthesis of the rare sugars by utilizing biological enzyme isomerization reaction. In addition, the rare sugars have various functions such as blood sugar level suppressing function, cancer cell growth suppressing function, and antibacterial action. In addition, since rare sugars have a large number of hydroxyl groups, they have a possibility for using as devices for expressing various functions by employing them as ligands of transition metal complexes. In recent years, it is successful that we have synthesized the suplamolecular rare sugars (SRSs) from the different types of rare sugars, that is not as simple mixtures but as single crystals having supralattice structure, that can be freely controlled optical rotation. It has been found that the crystal structures of these SRSs mostly follow the Wallach rule, but do not satisfy the Wallach rule especially in the case of D, L-psicose. Therefore, we have investigated the single crystal X-ray structural analyses of SRSs, obtaining the detailed crystal structure data, and analyzed the intermolecular interaction between their sugar molecules in the crystal by means of the DV-Xα molecular orbital calculation. According to our detailed analysis of the research, calculating the intermolecular interaction revealed that the stability of the intermolecular interaction in the crystal can not be explained only by following the simple Wallach rule. Specifically, for example in the case of D, L-psicose, the total energy in a crystal can be stabilized by aligning the polarization vectors of the molecules, and as a result, we have clarified that the SRSs crystal structure can be stabilized, even if it does not follow the simple Wallach rule.
X-ray Absorption Spectroscopy and Its Simulation for Some Disordered Oxide Systems
Authors: Cho Deok-Yong 
Published: May 2020

Abstract
The local structural properties of representative amorphous oxides, ZnO, HfO2, ZrO2, and In2Ga2ZnO7 were investigated by using X-ray absorption spectroscopy and an ab-initio theoretical calculation (FEFF). The X-ray absorption near-edge structures of the amorphous systems were compared with those of their crystalline counterparts, and were interpreted in terms of weakened structural orders (in the case of ZnO, HfO2, and In2Ga2ZnO7) or fundamentally different local structures (ZrO2; monoclinic-like local structure favoured in amorphous phase in contrast to the tetragonal structure in crystalline film).
Systematic First-Principles Calculations of Charge Transfer Transitions of Transition Metal Ions (Sc3+, Ti3+, V3+, Cr3+, Mn3+, Fe3+) in α-Al2O3 with Structural Optimization
Authors: Takemura Shota , Novita Mega , Ogasawara Kazuyoshi 
Published: May 2020

Abstract
In order to calculate the LMCT energies for various trivalent TM ions in α-Al2O3 using realistic model clusters, we performed structural optimization using the CASTEP code and constructed the optimized TMO6
9- and TMAl13O6
30+ clusters (TM = Sc3+, Ti3+, V3+, Cr3+, Mn3+, Fe3+). We obtained the LMCT energies of TM ions by first-principles many-electron calculations using the DVME method. It was found that the differences between the LMCT energies of the optimized clusters and those of the relaxed clusters based on the crystal radii originate from the difference in the multiplet splitting of the LMCT states. The results also indicated that the LMCT energies of transition metal ions in α-Al2O3 can be calculated using small clusters composed of the central TM ion and the first-neighbor oxygen ions.
Water Quality in the Maintenance of Oreochromis niloticus through Environmentally Friendly Biofloc Technology
Authors: Sulistya Dewi Endah Rita , Nugroho Ary Susatyo , Ulfah Maria 
Published: May 2020

Abstract
This Population growth that continues to increase demands continuous availability of food. Aquaculture is one of the sectors of food production which has the highest growth rate in the world. Facing this opportunity, aquaculture is faced with several challenges related to limited natural resources such as water and land, as well as waste water from aquaculture. Furthermore, the application of best aquaculture practices in aquaculture product certification requires environmentally friendly aquaculture practices. Oreochromis niloticus tilapia is a type of freshwater consumption fish and is now a popular pet fish in freshwater ponds in Indonesia. This study aims to analyze water quality in the maintenance of Tilapia through environmentally friendly Biofloc technology. This research method was designed in the form of Research and Development. The results showed that the water quality was proper for pond operation using minimal water exchange, the development of dense microbial populations through the management of microbial populations could control the concentration of ammonia in the water. Bacteria in ponds form biofloc, producing microbial proteins that make it possible to recycle unused feed protein, so as to minimize pollution.