bluuebunny/crossref_metadata_2025_split huggingface dataset:
The validity of e-module based on guided inquiry integrated ethnoscience in high school physics learning to improve students’ critical thinking
Authors: Kurniawan Rudi , Syafriani  
Published: May 2021

Abstract
Currently, the role of technology is very much felt, especially during the Covid-19 pandemic conditions. Education is no exception, everything must be done online. However, the problem in online learning, there are still many learning materials such as modules that do not support the online learning process that guides students to think critically to investigate and find concepts of learning materials that are close and follow the conditions of students. Guided inquiry-based e-module integration of ethnoscience is needed to enhance students’ critical thinking skills. It is hoped students can study online independently with problems around them. Data analysis techniques have been carried out using the Aiken V formula. Based on the validation that has been done, the integrated inquiry-based e-module ethnoscience was valid and can be used.
The validity of multimedia edupark physics learning with a scientific approach based on the beach destination of Painan Beach
Authors: Rahmadhani Nudiya , Rifai Hamdi 
Published: May 2021

Abstract
The background of developing edupark multimedia is a following-up to the preliminary research. Based on preliminary research that carried out to reveal several facts: the first principle, the concept of physics related to the tourist attraction of Carocok Painan Beach, Indonesia. Efforts to overcome every problem, especially in learning physics as the times evolve, in the 21st century the world of education is in a time of knowledge that requires the world community to be able to understand and utilize information and communication technology. The purpose of this research is to develop a physics edupark multimedia using a scientific approach to the Carocok Painan Beach tourist destination that is valid. This type of research is Educational design research (EDR) using the Plomp model, starting from the preliminary research stage (preliminary research), development or prototyping phase (development and design), and assessment phase (assessment). Edupark Physics multimedia validity tests were conducted by several experts. Its validation was carried out on the instrument sheet and learning multimedia by three validated materials, languages, and constructions from the lecturers. This research produces multimedia learning that belongs to a valid category. The conclusion of the results of this study is multimedia learning could make a best-matched platform for a user in physics learning activities as a source of learning physics at high school.
Development of distance learning devices based on the elicit, confront, identify, resolve, reinforce (ECIRR) model on Newton’s law material
Authors: Serevina V , Khaerunisa N A 
Published: May 2021

Abstract
The Outbreak COVID 19 that struck all parts of the country made the government implement several policies to stop the spread of the epidemic, including learning activities carried out at home with online systems or distance learning. This study aims to develop teaching materials based on the ECIRR learning model in distance learning which is being applied by all schools due to the pandemic that is sweeping across the globe. The learning model applied has five steps, namely Elicit, Confront, Identify, Resolve, Reinforce. This type of research is R n D (research and development) research with the ADDIE research model with five steps, namely analysis, design, development, implementation, and evaluation. In this study only at the stagefourth, namely implementation. The material in this study, namely Newton’s Law material held at SMKN 53 Jakarta. This is done because based on the results of the analysis of the needs of students at SMK 53 Jakarta, 53% of students feel they don’t understand Newton’s Law concept properly. The results of the study this, namely the results of the analysis of the validation of material experts obtained an average percentage of 81% in the very high category, the results of the analysis of learning experts obtained an average percentage of 83% with a very high category, the results of the analysis of the media expert obtained a percentage of 96% with a very high, the results of the teacher validation analysis obtained an average percentage of 84% with a very high category.
Software of project skills assessment based android for kinetic theory of gases and thermodynamics
Authors: Hidayati  , Afrizon R , Putri A 
Published: May 2021

Abstract
Assessment in the 2013 curriculum in terms of three aspects, that is assessment of attitudes, knowledge and skills. Skills assessment has several assessments that is performance assessment, portfolio assessment, product assessment and project assessment. Project assessment is comprehensive because it can assess from all aspects of the assessment. The fact is found in the school that teachers have not used technology in assessing the learning process. So that it takes a long time to assess and assign project assignments that are not yet optimal. One effort that can be done is to create a software of project skills assessment that contains project assessments to assist teachers in the learning assessment process on basic skills competencies that include project assignments given to students. The purpose of this study was to produce a valid software of project skills assessment on the kinetic theory of gases and thermodynamics. This type of research was R&D (Research and Development). The object of this research was the software of project skills assessment. The data collection instrument was carried out with a validation questionnaire sheet. The data analysis technique used is descriptive statistics. Based on data analysis, the software of project skills assessment named Project Valuer has been validated by experts in terms of five components, that issoftware content, language, software display design, software engineering, and visual communication obtained by an average percentage the validation value with very high criteria. This means that the software of project skills assessment based android for kinetic theory of gases and thermodynamics is valid.
Development of electronic module using inquiry based learning (IBL) model integrated high order thinking skill (HOTS) in 21st century physics learning class X
Authors: Nisak F , Yulkifli Y 
Published: May 2021

Abstract
The purpose of this study is to produce an electronic module using IBL integrated model HOTS in 21st century of Physics learning class X with valid and practical criteria. The thinking ability of students in learning physics is still not in accordance with the thinking skills that are needed in the 21st century. One of the reasons is because of the modules used by students still do not contain model steps that are integrated with the level of thinking skills. This type of research is a development research using the ADDIE model which consists of five phases, those are Analysis, Design, Development, Implementation, and Evaluation phase. Which in this research only carried out the development and implementation phase. The research instrument included are a validity questionnaire and practicality questionnaire. Data analysis techniques for validity used the Aiken’s V formula and for practicality using descriptive percentages. The results of the development stage show that the electronic module has an Aiken’s V value of 0.86 with the valid category. The results of the implementation stage show that the practicality of the electronic module is in the very practical category with a value of 93.27% for teacher responses and 87.86% for student responses. Thus, it can be concluded that the module electronic using IBL model integrated HOTS in the 21st Century Physics Learning of Class X meets the criteria of being valid and practical. The results of the implementation stage show that the practicality of the electronic module is in the very practical category with a value of 93.27% for teacher responses and 87.86% for student responses. Thus, it can be concluded that the module electronic using IBL model integrated HOTS in the 21st Century Physics Learning of Class X meets the criteria of being valid and practical. The results of the implementation stage show that the practicality of the electronic module is in the very practical category with a value of 93.27% for teacher responses and 87.86% for student responses. Thus, it can be concluded that the module electronic using IBL model integrated HOTS in the 21st Century Physics Learning of Class X meets the criteria of being valid and practical.
Effect of conceptual change texts on physics education students’ conceptual understanding in kinematics
Authors: Syuhendri S 
Published: May 2021

Abstract
The purpose of this research was to determine the effect of conceptual change oriented instruction using Conceptual Change Texts (CCT) toward the physics education students’ conceptual understandings in kinematic. The research used quasi-experimental method with pre-test and post-test control group design. The sample was selected based on purposive sampling technique comprised of two groups of students from two different campuses of a public university in South Sumatra, Indonesia. The instrument used was the Indonesian version of the Force Concept Inventory (FCI). The data was analyzed to determine the mean N-gain of the experimental and control group while the independent sample U-test by α = 0,05 were used to test the hypothesis. The findings showed that 1) there were some students’ alternative conceptions with the level of their conceptual understanding 26,2%, 2) the mean N-gain of experimental and control group were 41,85% and 1,60% respectively, and 3) there was a significant difference increases in students’ conceptual understanding between who were taught using conceptual change texts and conventional one. Therefore, in terms of alternative conceptions held by students, teachers can use conceptual texts teaching materials to facilitate students’ conceptual change.
A study on Raga characterization in Indian classical music in the light of MB and BE distribution
Authors: Roy S , Banerjee A , Sanyal S , Ghosh D , Sengupta R 
Published: May 2021

Abstract
Raga characterization in Indian classical music is an important aspect of music learning in this country. But the methods usually followed are mostly qualitative. In this study, we intend to quantify such abstractness using measurable parameters. To study musical information congregation quantifiably, we introduce methods based on well-known concepts used in Statistical Physics, namely Maxwell-Boltzmann (MB) and Bose-Einstein (BE) distribution. In this present study, these distributions have been applied on the chosen acoustic signals to find new parameters (equivalent to ‘temperature’ in physical systems) which can distinguish between different features of different ragas (containing the same notes) in Indian classical music. Music clips chosen were the ‘Alap’ part of these three different ragas (Marwa, Puriya, Sohini) sung by a legendary classical music maestro. All of the chosen three ragas are based on the following same note structure: Sa, komal Re, shuddh Ga, tivra Ma, shuddh Dha, shuddh Ni. To apply MB statistics to music, it is assumed that different notes with different occurrence frequencies are at different energy levels, the distribution of which follows the MB distribution pattern. In case of BE statistics, a rank-frequency distribution of the time durations of various notes of different ragas is studied. The resulting analysis gives rise to a number of parameters that help to categorize the individual characteristics of ragas. The methods studied here are novel in the music research field and can prove to be useful in the fields of music and speech as quantifying parameters for style identification.
Sound absorption performance of nonwoven fabrics
Authors: Prasetiyo I , Gunawan  , Adhika D R 
Published: May 2021

Abstract
Nowadays, the demand of sustainable and eco- friendly absorber is increasing. Non-woven fabrics made of textile waste can be a good candidate to address such a demand. From measurement results, absorption capability of this kind of material is evident. However, most of non-woven fabrics are manufactured on the basis of density only rather than targeted acoustic parameter to meet particular absorption performance. This work is focused on investigation of non-woven fabrics sound absorption performance characteristics. For this, surface morphology of non-woven fabrics with different density is evaluated by which detail geometrical properties of fiber can be observed. Experimental works on similar material system with variation in density and thickness are also conducted to obtain sound absorption coefficients. It is found that fiber size affects the absorption performance for the same thickness by which flow resistivity can be determined. For thickness of 10-50 mm, fibre size of 15-23 µm can produce sound absorption greater than 0.7 while the thickness and flow resistivity are inter-play to determine overall absorption characteristics.
Joint parameter determination using FRF decoupling method for connected solid plates
Authors: Patil R A 
Published: May 2021

Abstract
Use of the FRF decoupling method can be used to determine joint parameters for connected systems. The method has been verified to determine stiffness parameter for lumped mass systems and beam elements by the author in his earlier publication. Modal coupling method used to verify generated FRF in a coupled system for simple mass damper system. Sensitivity modes can be used for identifying the most accurate values for stiffness. In this paper, the method is extended to determine the stiffness parameter for a solid element. Though solid elements have only translational degree of freedoms (DOFs), this method can be used to determine rotational stiffness apart from translational stiffness for joint parameter.
Geometrically non-linear forced vibrations of Euler–Bernoulli laminated composite beams
Authors: El khouddar Y , Adri A , Rifai S , Benamar R 
Published: May 2021

Abstract
The objective of this research is to study geometrically non-linear free vibrations and forced vibrations subjected to harmonic excitations of laminated composite beams. On the basis of Euler Bernoulli’s beam theory and Green-Lagrange’s hypothesis of geometric non-linearity, the theoretical model has been established. Taking into account the harmonic response, the transverse displacement function of the non-linear beam determined by applying Hamilton’s principle, the problem is reduced to a non-linear algebraic system solved by an approximate method. In order to verify this method, numerical examples for carbon/epoxy materials, under two boundary conditions, i.e. clamped-free and clamped- clamped, have been performed and the results are very consistent with those obtained in the literature. In addition, based on the approximate multimode method in the vicinity of the predominant mode, a nonlinear forced response was performed for a wide range of vibration amplitudes. It should also be noted that the effects on the non-linear forced dynamic response of the fiber orientation and number of layers, the excitation frequency and the level of the applied harmonic force have been studied and illustrated by various examples.
Acoustic monitoring using PyzoFlex®: a novel printed sensor for smart consumer products
Authors: Blass M , Krebs F , Amon C , Adler M , Zirkl M , Tschepp A , Graf F 
Published: May 2021

Abstract
Acoustic monitoring has always been a niche area in the field of monitoring applications compared to other modalities, such as computer vision. Over the last decades, the number of applications for acoustic monitoring has been growing and ranges from predictive maintenance within the industrial sector to acoustic scene classification and security monitoring in traffic and urban scenarios. With the rise of the internet-of-things (IoT) and artificial intelligence (AI) in recent years, smart consumer products and devices have pushed forward using different sensor technologies to enhance the user experience. To this end, acoustic monitoring is still an underestimated discipline with great potential to serve as a missing link in smart sensing within environments where other modalities face difficulties. In this paper, we present PyzoFlex®, a printable sensor technology which facilitates accurate measurement of pressure and temperature changes in objects and their environment, as a sensor interface for acoustic monitoring applications. In contrast to microphones or acceleration sensors, PyzoFlex may be printed onto any curved or textured surface. To demonstrate the possibilities, we present a case study in which we equip a coffee machine with PyzoFlex to acoustically monitor the machine states in real-time using a machine learning model.
An ultra low-power ECG amplifier for wearable devices using classical 2-stage OTA
Authors: Zheng Keran , Sun Yuchen , Zhang Yuelin 
Published: May 2021

Abstract
Wearabl smart devices have become an important method to monitor people’s health. This research work aims to offer a relatively optimum solution to amplify the biomedical signal in the case of wearable devices. This is done by using the single-stage amplifier and Operational Transimpedance Amplifier (OTA) stage. The OTA stage uses a typical 2-stage amplifier topology, with first-stage differential pair, second stage a common source to provide high-gain. Simulation results showed that the amplifier has a differential gain of 40.04dB, a total integrated input-referred noise of 3.59uVrms, a total power consumption of 1.44uW, a NEF of 21 and a CMRR of 82 dB. In conclusion, the results verify the single-stage amplifier topology is useful and satisfy the low-power requirement.
One-Dimensional Bimetallic Lantern Complex
Authors: Sun Cuicui , Liu Xinying 
Published: May 2021

Abstract
As the scale of microelectronic circuit devices approaches the atomic limit, the study of molecular-based wires and magnets has become more prevalent. Lantern (or paddle-wheel) complexes with conventional {O(S),O} donor building block came into being, dozens of new lantern complexes have been prepared at present. The use of organic monomers to connect such complex building block to form metal coordination polymers with rigid open framework and tunable properties has become a research hotspot. Such polymers can be assembled in a one-dimensional array to produce unique electronic and magnetic properties for use in vapor color sensors, luminescent materials, magnetic resonance imaging, etc., to create diversified and multidisciplinary research fields.
Discrete structural optimization of a passenger car rear seat frame using aluminium alloy
Authors: Chao Ma , Yunkai Gao 
Published: May 2021

Abstract
To reduce the weight and improve the structural performances of a passenger car rear seat frame, this study uses a discrete structural optimization method to design an aluminium alloy seat frame to replace the original steel one. The optimization problem aims to minimize the total mass, manufacturing cost, the maximum displacements and tensile stresses under certain load conditions and maximize the first order natural frequency. The cross-sectional dimensions and material types of members in the seat frame are considered as the design variables. A modified non-dominated sorting genetic algorithm, the third version (mNSGA-III) which is adapted at handling problems with four or more objective functions, is used to solve the optimization problem. To benchmark the performance of the proposed method, a multidisciplinary design optimization (MDO) method is also utilized to solve the optimization problem. The comparison between the solutions obtained by the proposed method and the MDO method shows that the accuracy and the effectiveness of the proposed method are better. A weight saving of 35.1% is achieved by the aluminium alloy seat frame as compared to the original steel seat frame.
Research on the Wake-up Effect of Ferroelectric HfO2-ZrO2 Thin Films
Authors: Li Rui , Zhu Hui , Liu Jie , Wang Si , Xie Na , Huang Zeng , Fang Zhixuan 
Published: May 2021

Abstract
The appearance of ferroelectric (FE) and anti-ferroelectric (AFE) properties in HfO2-based thin films is highly intriguing in terms of both the scientific context and practical application in various electronic and energy-related devices. Interestingly, these materials showed a “wake-up effect”, which refers to the increase in remanent polarization with increasing electric field cycling number before the occurrence of the fatigue effect. The appearance of ferroelectric (FE) and anti-ferroelectric (AFE) properties in HfO2-based thin films is highly intriguing in terms of both the scientific context and practical application in various electronic and energy. In this paper, we have conducted an in-depth study on the relationship between the Wake-up effect in HfO2-based films and oxygen vacancies.
Temperature-dependent photoluminescence of InAs quantum dots Grown on Silicon
Authors: Yao Lijuan , Zhang Bowen , Fang Xuan , Li Bobo , Yuen Mukfung , Leung Wingpo 
Published: May 2021

Abstract
This paper presents detailed studies on the temperature dependent photoluminescence (PL) of self-assembled InAs/GaAs quantum dots grown on planar on-axis Si (001) substrates. Through the analyze, we have a better understanding of carrier transport processes into InAs/GaAs quantum dots system. Before 160K, the carrier transport from wetting layer to excited states (ES) and ground states (GS) is domination. As the temperature keeps rising, carrier thermal escape from GS to ES is domination.
Low Turn-Off Loss Shorted-Anode IGBT with Multiple p+/n Collector
Authors: Shi Shangyang , Tang Zongxuan , Yang Jishi 
Published: May 2021

Abstract
In this study, after numerical simulation, a novel snapback-free Shorted-Anode Insulated Gate Bipolar Transistor (SA-IGBT) with a Multiple p+/n Collector is proposed and investigated. This structure consists of P+ pillars located on the side of the collector. The P+ pillars provide high carrier injection efficiency and increase the anode resistance during the turn-on transient, eliminate the snapback phenomenon, and above all, they also extract holes during the turn-off process. This results in better performance between Eoff and Vce with the multiple p+/n collector (MPC) SA-IGBT and is advantageous for turn-off loss. When the MPC SA-IGBT and the SA-IGBT have the same forward voltage drop, the MPC structure reduces the turn-off loss by 25%.