bluuebunny/crossref_metadata_2025_split huggingface dataset:
Need analysis in development of student books based on STEM approach
Authors: Hizhar Daniel , Ramli Ramli 
Published: May 2020

Abstract
Curriculum-2013 was developed by perfecting critical learning patterns. The implementation of learning, including Physics, needs to emphasize the process of developing students attitudes, knowledge and skills through various approaches, such as STEM (Science, Technology, Engineering, and Mathematics) that integrates four scientific disciplines. Through STEM, students are expected to have skills to think critically, creatively, innovatively, and be able to communicate and collaborate. Furthermore, books as teaching materials and learning resources are seen as important in determining the success of physics learning. A preliminary analysis was conducted at SMAN 1 Luhak Nan Duo and SMAN 2 Pasaman about the characteristics of students, teacher competencies and student books. This Analysis uses the Plomp’s Development Model. Data is taken from results of questionnaires and interviews with teachers and students. It shows that teachers have not used books based on STEM yet, only use common textbooks and worksheets. Some teachers still use lecture method so that students have not received learning that guides them to think critically. Students are less interested in reading and have difficulty understanding Physics concepts from textbooks. This is used as the basis to developing student books based on the STEM approach to improve critical thinking skills.
Meta analysis the use of e-modules based on research based learning models
Authors: Hadianto Andrye , Festiyed  
Published: May 2020

Abstract
This study aims to analyze the use of E-MODUL based on research based learning on student learning outcomes. The method of this study is a meta-analysis with a sample of 10 articles in national journals. Research meta-analysis shows that the effect of using E-MODUL based on reasear based learning on student learning outcomes is more effective. The results showed that the effect size on the effect of learning outcomes was carried out on 10 national journal samples categorized as medium. This means that the influence of the use of E-MODULES can improve student learning outcomes greater than using conventional learning.
Preliminary analysis development of interactive student worksheets using inquiry based learning model for 10th grade senior high school
Authors: Samudra Elmi Yanto Adhar , Yulkifli Yulkifli , Widestra Rahmi Agustia 
Published: May 2020

Abstract
Physics learning emphasizes the giving of direct experience to students to foster the ability to think critical, creative, innovative, collaborative, and communicative. However, students are still difficult to understand and find the concept of physics, because learning is not yet fully centered on students, the existing teaching materials in the form student worksheets of are not interactive and the learning model has not been implemented optimally. This study aims to conduct an initial analysis of interactive student worksheet using the inquiry based learning model. This research is a descriptive study carried out through direct observation at senior high school (SMA N 15 Padang) with a sample of research is students of grade 10th. The initial analysis of the development of interactive student worksheet includes analysis of students, analysis of teaching materials, media analysis, and analysis of learning activities with instruments in the form of questionnaires and interviews. Based on the analysis of the data from the teaching materials obtained results of 65.8 and media analysis obtained results of 62.4. Therefore, it is necessary to develop interactive student worksheet using the inquiry based learning model for grade 10th senior high school.
Increasing students’ creative thinking skills at 11th grade of mathematics and natural sciences 5, Senior High School 42 Jakarta on subject of Temperature and Heat by applying discovery learning model
Authors: Serevina V , Sarah A L , Risniawati M , Andriana W 
Published: May 2020

Abstract
The purpose of this research is to increase the student’s creative thinking skills by applying Discovery Learning on subject of Temperature and Heat subject. This research was done by July 2018 to November 2018. The method used on this research is Class Action Research (CAR) method which was done within two cycles with Planning, Acting, Observing, and Reflecting stages. The aspects that measured on this research are the creative thinking skill which covering the aspect of Fluency, Flexibility, Elaboration, and Originality. Syntax of discovery learning model that applied in this research is stimulation, problem statement, data collection, data processing, verification, and generalization. The total score of creative thinking skill in cycle 1 was 54,35%, in cycle 2 was 60,65%. So, the average score of the skill to think creatively was 57,5%, refer to table 1, the student’s way in thinking creatively were “enough creative”. The pretest was been held obtained that average results of students score was 55 and the posttest results was 73. On post test results 73 known that student has been reached minimal completeness of physics subject as big as 70 refer to the rules from Senior High School 42 Jakarta. It can be concluded that students’creative thinking skills has increased by applying Discovery Learning model on temperature and heat subject..
Analysis of factors affecting thesis work of physics students in digital era
Authors: Fendriani Yoza , Zakirman  
Published: May 2020

Abstract
Thesis is one of the mandatory requirements to complete education at the university level. The conditions in that process indicate that many factors influence the completion of student thesis, especially in the Physics department. Physics students are currently in the digital age, so the rapid development of technology contributes to the completion of thesis. The purpose of this study is to describe the results of the analysis of factors that influence the successful completion of thesis Physics students in the digital era. This type of research is descriptive, with samples35 Physics students covering undergraduate, master and doctoral level. Based on the results of this study, it was found that there are several factors that influence the success of student thesis in the digital era, namely: internet browsing preferences, quality of guidance, desire to graduate on time, want to boast of parents, ability to write articles, pressure from family, motivation from friends, availability of references on campus, availability laboratorytools, campus internet access, using of chat applications on smartphones, internet network quality, intensity of attending peer sessions and proficiency in technology.
A meta-analysis of the effects of using PhET interactive simulations on student’s worksheets toward senior high school students learning result of physics
Authors: Chotimah C , Festiyed  
Published: May 2020

Abstract
The purpose of this study was to analyze the effect of the use of PhET Interactive Simulations student worksheets on students learning outcomes. The method used is the meta-analysis method. Meta-analysis is a technique used to summarize a variety of quantitative research results by finding the value of effect size using a sample of 10 articles in national journals. The results showed average effect size of 1, 117 with a standard deviation of 181,1. The resulting effect size is categorized as medium. Means that the influence of the use of PhET Interactive Simulations student worksheets can improve student learning outcomes by 32,73%.
Validity of science student books with the theme of energy in life based integrated local materials using integrated models for 21st century learning
Authors: Hidayat Zaitul , Sarmi Rahima Syabrina , Ratnawulan  , Desnita  
Published: May 2020

Abstract
Science student’s book should be in accordance with 21st century learning with assessments that are relevant to the characteristics of the learning. Where in the 21st century learning that is demanded are critical thinking skills and problem solving, creative and innovative skills, communication skills and collaborative skills. Where the four skills will aim to develop the potential in developing character, talent, competency, interest and literacy. To make use of this science student’s book, then need to be validated. The purpose of the validation is to know the validation science student’s books with the theme of energy in life based integrated local materials using integrated models for 21st century learning to use Aiken’s V with 5 validator is three experts and two practitioners composed. The questionnaire used the data of collection method. The result by 3 experts composed of content validation, construct validation, validation and then the graphical language with a valid validation category. While practitioners composed from same 2 with 3 experts composed is content validation, construct validation, validation and then the graphical language with a valid validation category. Conclusion, overall the science student’s books with the theme of energy in life based integrated local materials using integrated models for 21st century learning Be avowed valid and it can to be use in school.
Validation of integrated science teacher book integrated mode with scene life energy in the regional local content based sijunjung for 21st century skills
Authors: Sarmi Rahima Syabrina , Hidayat Zaitul , Ratnawulan  , Desnita  
Published: May 2020

Abstract
Prior to the development of integrated science teacher book-type integrated with the energy theme in the lives of local content based Sijunjung area to improve the skills of the 21st century, it is necessary to do the validation. Validation is done teacher book aims to examine the content validity and construct validity. Content validity with respect to the content and format of the book the teacher developed, while the construct validity with respect to the structure and characteristics of teacher-developed book. In addition to content validity and construct validity, it is also necessary to test the validation language to see the use of the language used in the book of teachers in accordance with the correct EYD and also carried out a validation test graphics. Validation of Integrated Science teacher book-type integrated with the energy theme in the lives of local content based on the area Sijunjung performed using validator Aikens V with 5 of them 3 experts and two practitioners. Collecting data using questionnaires. From the results of research by five people validator, then book the type of integrated science teacher integrated with the energy theme in the lives of local content based Sijunjung area to improve 21st century skills considered valid. In conclusion, the type of integrated science teacher book integrated with the energy theme in the lives of local content based Sijunjung area to improve 21st century skills have been developed and used by teachers in schools. From the results of research by five people validator, then book the type of integrated science teacher integrated with the energy theme in the lives of local content based Sijunjung area to improve 21st century skills considered valid. In conclusion, the type of integrated science teacher book integrated with the energy theme in the lives of local content based Sijunjung area to improve 21st century skills have been developed and used by teachers in schools. From the results of research by five people validator, then book the type of integrated science teacher integrated with the energy theme in the lives of local content based Sijunjung area to improve 21st century skills considered valid. In conclusion, the type of integrated science teacher book integrated with the energy theme in the lives of local content based Sijunjung area to improve 21st century skills have been developed and used by teachers in schools.
The development of physics learning tools in vocational high school based constructivism approach using learning cycle 5E model
Authors: Fatimah Iim 
Published: May 2020

Abstract
Teachers should be able to develop a learning tools that can improve the students’s ability to build knowledge and formulate their own concepts in the learning process. One of learning models that can support these purpose is learning based contructivism approach using learning cycle 5 E model. The type of research is research and development using 4-D model consist of define, design, development and disseminate. The research instrument used was a questionnaire (RPP validation, validation module, validation worksheets, assessment and response validation teacher) and RPP feasibility sheet. The data analysis technique used is descriptive statistics to obtain an average value and the percentage of the validity and practicality of learning tools. Based on the analytical validation of data is known that the developed learning tools considered valid. Based on the data analysis of the test results is known that the learning tools developed practical and effective category. From these results it can be concluded that the learning tools of physics based contructivism approach using learning cycle 5 E model at class XI TITL SMK Negeri 1 Rao Selatan developed are valid, practical and effective and it can enhance student competence.
Development of mathematics learning device based on guided discovery of program of international student assessment model orientation (preliminary research)
Authors: Afrilia C , Yerizon  , Permana D , Armiati  
Published: May 2020

Abstract
Student’s mathematical problem solving ability has optimal yet, this is due to school learning fail to get students used to work on problem solving PISA questions model. The purpose of this research is to produce mathematics learning device based on guided discovery of PISA model orientation in order to improve student’s problem solving ability. This is a development research. Development model of this research is Plomp model which consists of three phases, namely, preliminary research, development or prototyping phase, and assessment phase. The results of data analysis on preliminary research are: 1) Teacher has yet to be able to develop the learning device to improve students’ mathematical ability. 2) Learning resources used by the students are optimal yet to be able to draw student’s interest to learn. 3) Students are expecting for the attractive worksheet display and small number of the questions. 4) Students are expecting worksheet to discuss more on the use of mathematics in the society real life and problems related with their personal activities. 5) Students who are living in the remote area tend to be less motivated and less willing the learning process. 6) Students prefer group learning to individual learning.
Analysis of student’s understanding about Newton’s laws, in terms of perceptions to learning in senior high school
Authors: Putra A , Heriyanto  
Published: May 2020

Abstract
The results of student’s analysis of physics mastery of class X in several high schools in the city of Padang, showed the lowest value found in Newton‘s laws of motion. This shows that students experience various obstacles in mastering this material. One of them is the factor of the perception of students towards learning physics. This study aims to reveal the tendency of students’ perceptions of learning physics in Newton‘s law material, student mastery, their relationship and the factors of difficulty in learning Newton’s laws of motion, in terms of student perception. This study included descriptive correlational study in high school in Padang city in semester from January to June 2019. With stratified random sampling technique obtained by 60 students as samples to represent a clever student, medium and less, which is derived from 4 SMA and one private school. The instrument used to obtain data, in the form of 60 items of perception questionnaires and 24 items of mastery of material compiled based on a grid combination of 4 dimensions of knowledge and 6 levels of cognitive processes refers to Bloom’s revised taxonomy. The instrument used has fulfilled its validity and reliability. The results showed that a) the perception of students towards learning the laws of Newton at the high category, b) mastery of physics students are on the low category, c) There are positive correlation between the perceptions of teaching physics with students mastery to the material laws Newton‘s motion, with 36.2% contribution. b) The proportion of understanding dimensions of students’ knowledge: factual, conceptual, procedural, and metacognitive respectively, are 51.42 %, 36.88 %, 13.96 %, and 4,54 %. c) the proportion of mastery of cognitive process levels for the ability to remember, understand, apply, analyse, evaluate and create are: 54.44 %, 33.56 %, 38.75 %, 14.44 %, 13.19 % and 5.81 %. d) study difficulties were found in learning Newton’s law materials according to the perceptions of students, in terms of factors: students individual; properties inherent in physical matter; and student learning conditions created by the teacher.
A topology and sizing optimization method for frame structures combined with an orthogonal-maximin Latin hypercube design(LHD) method
Authors: Fu Jiayi , Huang Hai 
Published: May 2020

AbstractThis work presents a new strategy for improving the global searching capability of the two-level approximation method. By using an orthogonal-maximin latin hypercube design (LHD) method, five initial designs reflecting more information of the feasible domain can be generated. Due to their good representation for the feasible domain of the five latin hypercube designs, it is more likely to obtain a global optimum or a near global optimum which is better than before. Numerical examples of frame structures are established to illustrate the effectiveness of this method. From the results, it can be seen that a series of better optimal solutions can be obtained by using the strategy of orthogonal-maximin LHD method and the number of structure analysis required in the optimization process is dozens of times or fewer, even comparable to size-variable optimization.
Finite Element Analysis of an Acoustic Metamaterial Plate Incorporating Tunable Shape Memory Cantilever Absorbers
Authors: Wu Y T , Hu H L , Lee C Y 
Published: May 2020

Abstract
Metamaterials are materials having artificially tailored internal structure and unusual physical and mechanical properties. Due to their unique characteristics, metamaterials possess great potential in engineering applications. This study proposes a tunable metamaterial for the applications in vibration or acoustic isolation. For the state-of-the-art structural configurations in metamaterial, the geometry and mass distribution of the crafted internal structure is employed to induce the local resonance inside the material. Therefore, a stopband in the dispersion curve can be created because of the energy gap. For the conventional metamaterial, the stopband is fixed and unable to be adjusted in real-time once the design is completed. Although the metamaterial with distributed resonance characteristics has been proposed in the literature to extend its working stopband, the efficacy is usually compromised. In this study, the incorporation of tunable shape memory materials (SMM) via phase transformation into the metamaterial plate is proposed. Its theoretical finite element formulation for determining the dynamic characteristics is established. The effect of the configuration of the SMM cantilever absorbers on the metamaterial plate for the desired stopband in wave propagation is simulated by using finite element model and COMSOL Multiphysics software. The result demonstrates the tunable capability on the stopband of the metamaterial plate under different activation controls of the SMM absorbers, and shows the ability to trap the vibration at the designed frequency and prevent vibration wave from propagating downstream in different absorber arrangement and alloy phase. To conclusion, this study should be beneficial to precision machinery and defense industries which have desperate need in vibration and noise isolation.
Application of intelligent algorithm in trajectory optimization of hypersonic vehicle
Authors: Liu L H 
Published: May 2020

Abstract
Aiming at the application problem of intelligent algorithm in trajectory optimization of hypersonic vehicle, the basic theoretical framework to solve this problem is discussed. Based on the flight characteristics of hypersonic flight vehicle, the demand for intelligent algorithm application is put forward. According to the principle of intelligent optimization, the key problems such as initial selection of trajectory optimization, intelligent algorithm and parallel computation are discussed. On this basis, the system application framework of intelligent algorithm is designed, which optimizes trajectory and guidance synchronously, and provides a new typical application mode for flight vehicle intelligent control technology.
Modelling and Control of Quad Hybrid Engine Levitating Platform
Authors: Hou Y J , Chen T L 
Published: May 2020

Abstract
This research aims to develop trajectory controls for a levitation platform which is powered by rocket fuel. This control task is to regulate the platform for 3D trajectory followings and suspension in the air, which is different from that of the most rocket systems. To cope with the challenges of slow thrust response and coupled vehicle dynamics, we proposed a control system that consists of 4 independent loops for the height, yaw angle, x-position, y-positions, respectively. The developed controllers include 4 PID compensators for the flow rate throttling system, and four double phase lead and two lead-lag compensators for the vehicle dynamics. According to the simulation results, the levitation platform can follow a designated trajectory well when there exist external torques disturbance. (both 1 N-m step inputs and 0.1 N-m Gaussian distributed input) and 2% thrust force oscillations.
Temperature Compensation Method of Lamb waves on Composite Plate using First Arrival Wave
Authors: Gong I. C. , Jun Y. U. , Park J. S. 
Published: May 2020

Abstract
There are two basic methods of temperature compensation on isotropic plates, Optimal Baseline Selection(OBS) and Baseline Signal Stretch(BSS). The OBS method compensates the temperature using multiple baseline signals, while the BSS method using one baseline signals and stretch factor. However, in composite materials, the velocity of lamb waves differs from one direction to another. In this paper, a temperature compensation algorithm is proposed using the First Arrival Wavepacket(FAW) factor considering the propagation direction of lamb waves in composite plates. The proposed algorithm consists of two parts. First, Fast Fourier Transform (FFT) was used to filter the response signal in the space domain. Second, the signal was compensated by using the FAW factor for each separated signal. And the accuracy of the algorithm was improved by considering the group velocity and phase velocity of the numerical value of the lamb waves. The numerical value is calculated by using the stress-strain relation and the equation of motion for particles in the composite. Finally, the error of the signals was calculated using the Maximum Error of the Subtracted Signal(MESS). Also, the temperature compensation method using the proposed algorithm was verified by comparing the existing OBS/BSS method. Also, the compensated signal was compared with the experimental signal.