bluuebunny/crossref_metadata_2025_split huggingface dataset:
Petrography and XRD mineral dolomites, paciran formation, district of Lamongan, East Java
Authors: Mulyadi D , Solihin  , Permana H , Yuniati M D 
Published: November 2019

Abstract
Limestone area research in Paciran area has attracted many geologists. Limestone Paciran is known to have more dolomite composition than limestone located in Tasikmalaya or other areas. The limestone facies in the area consisting of Grainstone, Packstone, and wackestone. These research methods are petrography, micropaleontology and XRD. Petrographic analysis shows that the diagenetic process has occurred, dissolution, dolomitization, and cementation. XRD analysis on the dolomite limestone are almost 31.02%, Micropaleontological analysis shows the fossils of large fores of the type of lepidocyclina which have been filled with cement and pieces of algae. The purpose of this research is to determine the composition of the dolomite minerals contained in the Paciran formation. At this time the limestones Paciran continues to be explored by miners for mining needs, dolomite as building construction, cement making, neutralizing acid in the chemical industry, magnesium and calcium sources in animal feed, flux in metal processing industry, glass making base material, ceramic, as fertilizer in the paper industry.
How tropical cyclones affected temperature, pressure, and humidity in Universitas Pendidikan Indonesia
Authors: Nugroho H S , Asmoro C P , Achmad A R , Ardi N D , Wijaya A F C , Utama J A , Tayubi Y R 
Published: November 2019

Abstract
Tropical cyclone which occurred in Indian Ocean can affected the weather parameters such as temperature, pressure, and humidity in some regions in Indonesia. Universitas Pendidikan Indonesia which located in West Java is one of the region that the affected by tropical cyclone. Therefore, the study to learn how tropical cyclones affected temperature, pressure, and humidity in Universitas Pendidikan Indonesia is needed. The study was done by processing the data generated through the Automatic Weather Station then analize the behavior of the weather parameters such as temperature, pressure, and humidity in the area of Universitas Pendidikan Indonesia throughout 15th November 2017 until 15th December 2017. This study concluded that the tropical cyclone can affected the weather parameters such as temperature, pressure, and humidity in the area of Universitas Pendidikan Indonesia.
The properties of zinc sodium phosphate glass system with the various concentration of chromium oxide doped
Authors: Budi A S , Permana A H , Muliyati D , Primasari N , Sazali E S , Ambarwulan D 
Published: November 2019

Abstract
In this research, we investigate the properties of zinc sodium phosphate glass system with the various concentration of chromium oxide doped. The glass system was synthesized using the melt quenching technique — the concentration of chromium oxide varying from 0.5% to 2.5%. The chromium oxide presence makes the range value was smaller for the density and the molar volume thus making its the structure of this glass system more stable. We perform the Vicker Hardness test using 980 mNewton pressure. The test results show the concentration of chromium oxide effect to the hardness scale of glass system. We also perform FTIR test for knowing the relationship between the wavenumber and percentage of transmittance.
Confirmatory factor analysis of critical thinking disposition test in university biology
Authors: Syahfitri J , Firman H , Redjeki S , Sriyati S 
Published: November 2019

Abstract
The purpose of this study was to look at the construct validity of the Critical Thinking Disposition (CTD) Test in Biology. Referring to Facione theory, there are seven indicators of CTD: truth-seeking, open mind, analyticity, systematicity, self-confidence, inquisitiveness, and maturity. The instrument used is ten groups of questions consisting of 7 questions that lead to the CTD. The test is presented in the form of cases relating to biological content and have been validated by experts. The study involved 526 respondents who are biology education students from two universities in Bengkulu with study level (year1, 2, 3 and 4). After confirming with CFA, the results show that the CTD test has suitable construct validity. This result is supported by the value received from Convergent Validity which includes the factor loading value of more than 0.5, while the Composite Reliability (CR) and Average Variance Extract (AVE) values for seven indicators of CTD are truth-seeking (CR=0.96, AVE=0.72), open mind (CR=0.94, AVE=0.61), analyticity (CR=0.97, AVE=0.76), systematicity (CR=0.96, AVE=0.69), self confidence (CR=0.98, AVE=0.83), inquisitiveness (CR=0.93, AVE=0.56) and maturity (CR=0.97, AVE=0.75). From the results can be concluded that the test has construct validity and high composite reliability to measure the CTD in biology.
An assessment of performance appraisal in entalphy change laboratory activity: a comparative of scoring by peer and teacher
Authors: Nahadi  , Siswaningsih W , Fatah H A 
Published: November 2019

Abstract
The purpose of this study was to develop performance assessment instruments and their application to high school practicum for enthalpy change. The instrument used is a validation sheet to see the validity. The instrument that has been analyzed is a performance assessment about students’ laboratory skills in enthalpy change (ΔH) laboratory activity. The method used in the research was development and validation. The instrument was evaluated by 8 teachers and 32 students of year XI from one of senior high school in Bandung. The result shows that there is a similarity of the score given by students and that the teacher. This similarity is supported by the pearson correlation score r=0,89 have been categorized as very good. This result implies that performance skills can be administered by peers using this instrument since it provide the similar result with the teachers.
Generating mind map from an article using machine learning
Authors: Nurrokhim M F , Riza L S , Rasim  
Published: November 2019

Abstract
Sequence teaching materials is very important in learning because it will improve the effectiveness of learning. But not all teachers can make the sequences in detail and accurate. The purpose of this research generates sequences of teaching materials automatically by using the concept map. The approach used is the Information Retrieval Approach and the use of the CoreNLP library. Concept map is generated from articles or other teaching materials. Testing is done by comparing the concept map of automatic generation with concept map made by experts. The results showed 52.5% accuracy.
Implementation of python source code comparison results with Java using bubble sort method
Authors: Insanudin E 
Published: November 2019

Abstract
In the implementation of Python and Java source code comparison results are more focused on the scale of the ratio of the number of lines of code, file capacity, and access speed. As for the background of this writing because there are so many programming languages that can be used with the same results but overall we do not know which programming language is more optimal and efficient in terms of the number of lines of code better known in the programming language is LOC (Line of Code) capacity of file access speed. In this study, the authors focus only on Java programming language and python course as a first step to know the ratio of the number of lines of code, file capacity, and access density. To determine the comparison there is a method used is bubble short. The results of the implementation of the comparison of these programming languages for Python programming language to produce the number of LOC (line of code) or the number of lines of code as much as 10, the capacity of the file extension.py by 506 bytes and txt extension of 397 bytes and access speed approximately for less more 4 seconds. While Java produces the number of LOC (line of code) or the number of lines of code as much as 11, the capacity of the file extension. Java of 86.2 Kbytes and extension txt of 477 bytes and access speed for 7 seconds. So do not close the possibility to make other applications python programming language will be more optimal and efficient.
Developing an interactive multimedia of network topology based on visual, auditory, and kinaesthetic learning model for vocational students
Authors: Junaeti E , Munir  , Mulya S , Erlangga  
Published: November 2019

Abstract
Network topology is a knowledge in basic network subjects that is often disregarded to be grasped by almost all vocational students whose learning activities are dominated by practicum. Whereas network topology is a basic concept that is important in order to comprehend the concept of networking further. This research was aimed to develop a concept and design of interactive multimedia of network topology to be implemented in visual, audio, and kinaesthetic (VAK) learning model. This study used the overall life cycle method to develop multimedia. The design of this media adopts the constitutive elements of situated learning in interactive multimedia. The multimedia features correspond to Gagne’s events which serve well as a framework for the successful development of educational multimedia modules. The experiment was carried out at the vocational school Binawisata Lembang, Indonesia, involving thirty tenth grade students majoring in software engineering as the research subjects. The result of the experiment was then analyzed using a quantitative method approach. It was revealed that students’ perceptions of the media were very good. Based on the results obtained during experiment, the developed media was proven to have positive impacts on improvement of students’ cognitive abilities.
In-service teachers’ perception towards Education for Sustainable Development (ESD) in Myanmar
Authors: Aye S , Win Y M , Maw S S 
Published: November 2019

Abstract
This study was carried out to explore Myanmar lower secondary school teachers’ perception on Education for Sustainable Development (ESD). The research focused on the teachers’ level of ESD awareness and knowledge, their attitudes towards ESD, and their willingness to adopt ESD within their classroom setting and as well as their teaching skills. The sample consisted of 248 lower secondary school teachers of thirty schools in Sagaing Township, Myanmar. The Five-point Likert scale questionnaire was developed. Its reliability was measured by Cronbach’s alpha. The results indicated that, in general, the teachers have positive attitude towards ESD and willingness to adopt ESD in their teaching subjects. However, the participants’ level of awareness of ESD concepts is rather low and they do not understand ESD concept clearly. They do not have adequate teaching skills for integrating ESD concept into their teaching subjects. The findings also revealed that although there is no significant difference in the level of awareness and knowledge of ESD concept and attitude towards ESD, level of science teachers’ teaching skills in integrating ESD into science topics is higher than that of other subject teachers, and a significant relationship exists in three variables: teachers’ knowledge of ESD concept, attitude towards ESD and their teaching skills respectively. These findings might be useful as a baseline survey in implementing in-service science teacher training program integrated with ESD in Myanmar.
Enhancing critical thinking skills and information literacy of students through integrated science teaching materials
Authors: Fairuz T , Kaniawati I , Sinaga P 
Published: November 2019

Abstract
Critical thinking and information literacy are skills that need to be developed to deal with the challenges of the 21st century. This study aimed to enhance critical thinking skills and information literacy of secondary school students through developed integrated science teaching materials in theme interaction of light with organisms. This study used quasi-experimental methods and the matching-only pre-test – post-test control group design. Subjects of this study were eighth-grade students. This research used two classes selected purposely with experimental class using developed teaching materials and control class using teaching materials commonly used in school. There were two instruments applied in this study, critical thinking skills test and information literacy test. Data was analysed by normalized gains, Cohen’s D, and t-test. Based on the results of data analysis, it could be concluded that, the used of developed integrated science teaching materials was effective in enhancing critical thinking skills and information literacy.
Validation of science virtual test (SVT) to assess 9th grade students’ critical thinking on living things and environmental sustainability theme
Authors: Rusyati L 
Published: November 2019

Abstract
Critical thinking, communication, collaboration, and creativity are four skills that required for 21st century education. This descriptive research is focus on students’ critical thinking and specifically how to validate the science virtual test (SVT) to assess that skill. There are 21 students (9 grade/15 years old) in Kuningan city West Java as the participants while science teacher and expert as the validators. The science virtual test (SVT) as a research instrument has constructed in multiple choice based on eight elements and 26 sub elements critical thinking. Critical thinking which developed by Inch et al. consists of eight elements namely question at issue, purpose, information, concepts, assumptions, point of view, interpretation and inference, implication and consequences. Curriculum analysis, expert judgment, legibility test and trial test are four steps in this research. The test item criterion based on trial test are accepted, accepted but need to be revised, and rejected. The reliability of the test 0.43. It means the SVT that used is reliable to assess 9th grade students’ critical thinking.
Implementation of cooperative integrated reading and composition (CIRC) to enhance mathematical argumentation ability of mathematics teacher students
Authors: Rosita C D , Kusumah Y S , Suryadi D , Kartasasmita B G 
Published: November 2019

Abstract
This study aims to analyse whether there are differences in the enhancement of mathematical argumentation ability between students who received Cooperative Integrated Reading and Composition (CIRC) learning and students who received conventional learning. The research method chosen is quasi-experiment using non-equivalent control group design. Data analysis techniques used are descriptive statistics and inferential statistics. The results show that the average enhances the ability of students’ mathematical argumentation who received CIRC learning are better than students who received conventional learning. When reviewed based on PMK (Prior Mathematical Knowledge), a mathematical argumentation ability of upper and middle PMK group students in CIRC learning classes are better than students’ mathematical argumentation in conventional learning. Nevertheless, students’ mathematical argumentation ability in the lower PMK groups between the CIRC learning class and the conventional learning class is not different.
The implementation of problem based learning (PBL) model viewed from mathematical connection competence on x year students of vocational high school
Authors: Fatimah F N , Riyadi  , Sari D R 
Published: November 2019

Abstract
The study aimed to prove the implementation of Problem Based Learning (PBL) model having better achievement than conventional model in improving students’ mathematic connection competence. The method used is qualitative with control group doing pretest and posttest. Population of the study were X year students of vocational school in Kabupaten Sukoharjo. The sample was X year students of SMK Pelayaran Pancasila Kartasura. Instrument used was test of mathematical connection ability. The result showed that with significance level α = 0,05 showed that Problem Based Learning (PBL) model was better significantly than conventional learning model to improve students’ mathematic connection ability.
Cognitive style and gender differences in a conceptual understanding of mathematics students
Authors: Kusumaningsih W , Saputra H A , Aini A N 
Published: November 2019

Abstract
This study aimed to analyze the understanding of mathematics concepts of cognitive style students based on gender in the matrix material. This research is descriptive research with a qualitative approach. The data collected from high school students of class XI in a cognitive style of male and female. The technique of data collecting used in this research are tests, interviews and also equipped with documentation. The data analysis techniques in this research are data reduction, data display and conclusion/verification. The data validity used triangulation technique. The results showed that cognitive style between male and female students have a similarity understanding of mathematics concepts in indicators that give examples or examples of the counter of the learned concepts and have differences in understanding of mathematics concepts; redefine the concepts in mathematics; connect the various concepts in mathematics as well as outside mathematics; identify the characteristic of procedure or theory and present the idea in various forms of mathematical representation. Based on data analysis, it can be concluded that the understanding of mathematics concepts of cognitive style on the male is better than on the female.
Error analysis of college students in calculus learning
Authors: Khairani  , Mukhni  , Aini F Q 
Published: November 2019

AbstractCalculus is one of many courses in college that must be mastered by students. But, students faced difficulty in calculus learning. There were many students who failed in calculus course. They could not answer calculus problem correctly and made mistakes. Purpose of this study was to describe students’ error in calculus learning based on Newman Error Analysis. Type of research was descriptive qualitative. Sampling was done by purposive sampling. Sample was 29 students who took calculus course in 2018. Instrument was students’ answer worksheet of calculus test. Result shows that students have different type of error in solving calculus problem.
Ethnomathematical review of Toraja’s typical carving design in geometry transformation learning
Authors: Nugraha Y S 
Published: November 2019

Abstract
Toraja’s typical carving as one of the nation’s culture wealth does not only have a philosophical meaning, but also contains mathematical elements in relation to the concept of geometry transformation. Ethnomathematics is a process of presenting the mathematical ideas possessed by traditional societies on various socio-cultural activities that can be observed as a mathematical activity. The mathematical exploration of Toraja’s typical carving design such as Pa’tedong, Pa’barre Allo, Pa’manuk Londong, Pa’ Sussu’, and other developmental designs is an alternative learning model that can be applied in school. This is an important effort to preserve the national culture and as a cultural education to the younger generation. This is a qualitative research with ethnography approach to reveal philosophy and mathematical concept which is found on Toraja’s typical carving design.
The effect of students’ perception on classroom assessment to students’ attitudes
Authors: Syaifuddin M 
Published: November 2019

Abstract
The objectives of this research were to analyze the students’ perceptions on classroom assessments, the differences in the students’ perceptions on classroom assessment based on gender and lecturers, and the effect of students’ perceptions on classroom assessment to their attitudes. The subjects were UMM students who attended Descriptive Statistics course. The data were collected using a Students’ Perception of Assessment Questionnaire (SPAQ) and attitudes questionnaire. The SPAQ and attitude questionnaire were reliable. Mixed method used in this study. Descriptive method was used to analyze students’ perception on the classroom assessment. The independent sample t-test was used to test the differences in students’ perceptions on classroom assessments by gender and lecturers. The linear regression analysis was used to examine the effects of students’ perceptions on classroom assessment to their attitudes. The results of this study showed that the students’ perceptions on classroom assessment were positive for all aspects, except for the students’ perceptions on their ability to prepare for the test on assignments and feedback. There were no difference perceptions of the students on classroom assessments based on gender and the lecturers to all aspects of classroom assessments and the students’ perceptions on classroom assessment influenced the students’ attitudes.
Enhancing mathematical connection ability of mathematics education student through inquiry-based learning
Authors: Handayani A D , Herman T , Fatimah S , Setyowidodo I 
Published: November 2019

Abstract
As a pre-service mathematics teacher, the student of mathematics education is required to have high order thinking skills. A part of high order thinking skills is the ability of a mathematical connection. The purpose of this study is to analyse the improvement of student’s mathematical connection ability as a result of the implementation of inquiry-based learning. This research is a quasi-experimental research involving two classes. The first class as the experimental group which get Inquiry learning and the second group is the control group which get the conventional learning. The sample of this research is students who take the course of Numerical Method. The data have been obtained and then analysed by using t-test. The results of this study show that the ability of mathematical connections of students in the class that using inquiry-based learning is better than the students in the class that using conventional learning.
Prospective teachers’ mathematical resilience after participating in Problem-based Learning
Authors: Ariyanto L , Herman T , Sumarmo U , Suryadi D 
Published: November 2019

Abstract
The main goal of this study is to improve mathematical resilience of prospective math teachers through the implementation of Problem-based Learning. This study is a quasi-experimental using non-random of pretest and posttest control design. 57 prospective math teachers from Universitas PGRI Semarang are taken as the sample of this study. The data needed to achieve the goal of this study are taken from documentation, observation, interviews, students’ worksheets, and pre and post responses. The results of the analysis show that mathematical resilience in prior knowledge of mathematical category of high, medium and low of the students who experienced study using Problem-based Learning and overall is improved. This students’ mathematical resilience improvement belongs to low category. This study can be taken as consideration for another researchers for doing further research which is in the same vein as this study.