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检索条件"任意字段=International PostGraduate Conference on Applied Science and Physics 2017, GRASP 2017"

共 1397 条记录，以下是81-90 订阅

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Projects for the implementation of science technology society approach in basic concept of natural science course as application of optical and electrical instruments' material 4

Projects for the implementation of science technology societ...

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international conference on Mathematics, science and Education (ICMSE)

作者： Satria, E. Univ Bung Hatta Fac Teacher Training & Educ Elementary Sch Teacher Educ Program Sumatera Indonesia

Preservice teachers in primary education should be well equipped to meet the challenges of teaching primary science effectively in 21 century. The purpose of this research was to describe the projects for the implementation of science-Technology-Society (STS) approach in Basic Concept of Natural science course as application of optical and electrical instruments' material by the preservice teachers in Elementary Schools Teacher Education Program. One of the reasons is the lack of preservice teachers' ability in making projects for application of STS approach and optical and electrical instruments' material in Basic Concept of Natural science course. This research applied descriptive method. The instrument of the research was the researcher himself. The data were gathered through observation and documentation. Based on the results of the research, it was figured out that preservice teachers, in groups, were creatively and successful to make the projects of optical and electrical instruments assigned such as projector and doorbell. It was suggested that the construction of the instruments should be better (fixed and strong structure) and more attractive for both instruments, and used strong light source, high quality images, and it could use speaker box for projector, power battery, and heat sink for electrical instruments.

关键词： Application programs

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Analytical and numerical investigation of fracture toughness of small-size chevron-notched specimens 14

Analytical and numerical investigation of fracture toughness...

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14th international conference on Fracture, ICF 2017

作者： Deryugin, Ye.Ye. Lasko, G.V. Danilenko, I. Schmauder, S. Institute of Strength Physics and Materials Science SB RAS Tomsk Russia Institute for Materials Testing Materials Science and Strength of Materials University of Stuttgart Pfaffenwaldring 32 Stuttgart Germany Donetsk Institute of Physics and Engineering National Academy of Sciences Donetsk Ukraine

The influence of the elastic deformation of the ligament of a double cantilever beam on the displacement of the tips of a chevron notch under external applied load is analyzed. With the Finite Element Method it was shown, that when calculating a deflection of the beams one cannot neglect the boundary effects if the relation of the length of the beam to its width is less than *** contribution of the deformation of the ligament to the displacements of the chevron notch in experiments on small-scale specimens can reach more than 20% from the full displacement of it. © 2017 Chinese Society of Theoretical and applied Mechanics. All Rights Reserved.

关键词： Fracture toughness

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Investigation of optical properties of ferrofluid by using magneto-optical transmission and linear dichroism 7

Investigation of optical properties of ferrofluid by using m...

引用

7th IEEE international conference on Nanomaterials: Applications and Properties, NAP 2017

作者： Akyurekli, Mert Gonulol, Meltem Bayram, Alper Yarici, Ismail Ozturk, Yavuz Cevre College Istanbul Turkey Celikoglu Department of Physics Dokuz Eylül University Izmir Turkey Department of Material Science and Engineering Ege University Izmir Turkey Department of Electrical and Electronics Engineering Ege University Izmir Turkey

ISBN: (纸本)9781538628102

In this study, optical properties of produced magnetic liquid investigated by means of optical transmission and linear dichroism with respect to applied external magnetic field up to 100 Oe. Magnetic fluid of around 7 pH value were prepared by using magnetic nanoparticles synthesized by the co-precipitation method, surfactant and carrier liquid. Also, polarization dependent maximum transmission difference was measured as 40% for polarization parallel and 20% for polarization perpendicular to the applied field in the case of magnetic field perpendicular to the optical path. Maximum transmission change of %10 was obtained when the applied magnetic field parallel to the optical path. © 2017 IEEE.

关键词： Synthesis (chemical)

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A magnetometer for estimating the moment of magnetic micro-particle in three dimensions 1

A magnetometer for estimating the moment of magnetic micro-p...

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1st international conference on Manipulation, Automation and Robotics at Small Scales, MARSS 2017

作者： Punyabrahma, P. Jayanth, G.R. Department of Instrumentation and Applied Physics Indian Institute of Science Bangalore India

ISBN: (纸本)9781538603468

This paper presents a magnetometer for direct estimation of magnetic moment of magnetic micro-particles in three dimensions (3-D). The magnetometer consists of a force sensor that deforms in response to the magnetic interaction with the magnetic particle along with a high resolution measurement system and a nanopositioner. Novel strategies are proposed to simultaneously estimate the magnetic moment along all three axes from the measured deformation of force sensor about two independent axes. The developed setup is used to estimate the magnetic moment of magnetic particles along the three axes. In all the cases, the estimated magnetic moment agrees well with the theoretical estimates, with an average error of about 18%. © 2017 IEEE.

关键词： Magnetometers

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Phenolic derivatives as potential flame retardants 28

Phenolic derivatives as potential flame retardants

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28th Annual conference on Recent Advances in Flame Retardancy of Polymeric Materials, FLAME 2017

作者： Yu, Shiran Xia, Zhiyu Kiratitanavit, Weeradech Thota, Sammaiah Kumar, Jayant Mosurkal, Ravi Nagarajan, Ramaswamy Department of Plastics Engineering United States Department of Physics and Applied Physics United States Center for Advanced Materials University of Massachusetts Lowell United States Bio-Science and Technology Team Materials Science and Engineering Branch US Army Natick Soldier RDEC United States

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Development of 7E model lesson on earth systems: a lesson study

Development of 7E model lesson on earth systems: a lesson st...

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international conference on Mathematics and science Education (ICMScE)

作者： Abas, H. T. H. Hairulla, M. S. Canalita, E. E. Nabua, E. B. Datu Tanggor Mem Natl High Sch Dept Educ Autonomous Reg Muslim Mindanao Marogong Lanao Del Sur Philippines Mindanao State Univ Iligan Inst Technol Coll Educ Iligan 9200 Philippines Mindanao State Univ Iligan Inst Technol Integrated Dev Sch Iligan 9200 Philippines

The study aimed to develop a 7E model lesson on Earth Systems and implement it through the lesson study approach. The developed lesson was based on the standards provided by the Department of Education in the K to 12 Basic Education Curriculum Senior High School where it underwent a series of validation, revision and evaluation for further improvement prior to its implementation. The study tested the effects of the developed 7E model lesson on the conceptual understanding of the respondents. The developed 7E model lesson was implemented through lesson study approach to the three class sections of Grade 11 STEM of Iligan City National High School, School Year 2017-2018. Achievement test was conducted to the respondents. The result of the study shows that respondents exposed to the developed 7E model lesson had significant higher test scores in the post-test as compared to the pre-test. Result implies that there is a positive significant impact of the 7E model lesson on the conceptual understanding of the respondents on Earth Systems.

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Use of butterfly house as learning media to improve creative thinking skills of pre-service biology teachers

Use of butterfly house as learning media to improve creative...

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international conference on Mathematics and science Education (ICMScE)

作者： Halimah, M. Sanjaya, Y. Tresnawati, C. Nurdiani, N. Univ Pendidikan Indonesia Sekolah Pascasarjana Jl Dr Setiabudi 229 Bandung 40154 Indonesia Univ Pasundan Bandung Indonesia FKIP Program Studi Pendidikan Biol Jl Tamansari 6-8 Bandung 40116 Indonesia Univ Pendidikan Indonesia Dept Pendidikan Biol Jl Dr Setiabudi 229 Bandung 40154 Indonesia

Improved learning outcomes will be obtained whereby strengthened learning process. One of the things that must be fulfilled in, the strengthening of the learning process is through the use of contextual relevant and hands-on activity-based learning media. One of the learning media that meets the criteria is the butterfly house. The purpose of this research is to focus on how Pre Service biology teacher can improve their creative thinking skills through a series of project-driven activities that lead to fluency thinking, flexible thinking, original thinking, elaboration, and evaluation. The method used in this research is quasi-experimental pre-test-post-test design. The results showed that the ability of the pre-service Biology teacher had a significant improvement in creative thinking skills (thinking fluently, fluid, original, detailing and assessing) after following a series of project-based practicum. The category of increase (N-Gain) is 0.89 which is included in the high category. So it can be concluded that there are significant a differences in creative thinking skills consisting of fluency thinking, flexible thinking, original thinking, elaborating thinking and thinking of evaluating pre-service biology teacher students before using project-based practicum and after being given a project-based practicum.

关键词： Biology

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Fast Calculation of Restricted Maximum Likelihood Methods for Unstructured High-throughput Data 2

Fast Calculation of Restricted Maximum Likelihood Methods fo...

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2017 IEEE 2nd international conference on Big Data Analysis（ICBDA 2017）

作者： Shengxin Zhu Department of Mathematics Xi'an Jiaotong-Liverpool University Laboratory of Computational PhysicsInstitute of Applied Physics and Computational Mathematics

ISBN: (纸本)9781509036202

Linear mixed models are often used for analysing unbalanced data with certain missing values in a broad range of *** restricted maximum likelihood method is often preferred to estimate co-variance parameters in such models due to its unbiased estimation of the underlying variance *** restricted log-likelihood function involves log determinants of a complicated co-variance matrix which are computational *** efficient statistical estimate of the underlying model parameters and quantifying the accuracy of the estimation requires the observed or the Fisher information *** approaches to compute the observed and Fisher information matrix are computationally *** algorithms are of highly demand to keep the restricted log-likelihood method scalable for increasing high-throughput unbalanced data *** this paper,we explore how to leverage an information splitting technique and dedicate matrix transform to significantly reduce *** with a fill-in reducing multi-frontal sparse direct solvers,this approach improves performance of the computation process.

关键词： linear mixed model restricted log-likelihood unbalanced data Fisher-scoring algorithm multi-frontal factorization fill-in reducing algorithm

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The Design and Implementation of Signal Generator Based on DDS 9

The Design and Implementation of Signal Generator Based on D...

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2017 9th IEEE international conference on Communication Software and Networks (ICCSN 2017)

作者： Zhenyu Zhao Lianming Wang Jufang Chen Zengyu Cai Yang Lv Yuan Feng School of Physics Northeast Normal University School of Computer and Communication Engineering Zhengzhou University of Light Industry State Key Laboratory of Precision Spectroscopy East China Normal University

ISBN: (纸本)9781509038237;9781509038220

The low and medium frequency signal generator with high precision and high stability is widely used in experiment courses, mechanical, engineering and other fields. In order to meet the special needs of these fields, this paper puts forward a design scheme of signal generator based on DDS. Combined with the advantage of virtual instrument technology, the user can set the signal parameters on PC control panel made by Lab VIEW. And the lower computer can generate kinds of signals with specific frequency, phase and amplitude efficiently. The experiment results show that the design scheme introduced in this paper can accurately produce sine wave, square wave, triangle wave within 0.1 Hz to 1 M Hz frequency and this design has been successfully applied to the experiment courses in colleges and universities.

关键词： direct digital synthesizer signal generator upper computer the lower computer Lab VIEW

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Lossless electrocardiogram compression using segmented beats by dynamic bit allocation and Huffman encoders: A study on performances

Lossless electrocardiogram compression using segmented beats...

引用

international conference on Computational science and Engineering, ICCSE 2016

作者： Bera, Priyanka Gupta, Rajarshi Department of Applied Physics University of Calcutta Kolkata India

ISBN: (纸本)9781138029835

Lossless compression of Electrocardiogram (ECG) can ensure preservation of clinical features in the dataset. In this work, we applied two such encoders, Huffman coder and Dynamic Bit Allocation (DBA) to compare their performance for single lead ECG compression. Each ECG beat was segmented into three zones P, QRS and T. The encoders were applied to compress biased first order difference for P and T and second order difference for QRS with ptbdb and mitdb data at 8 bit quantization and resampled at 1 kHz. An average compression ratio for of 5.69 and 5.14 were obtained with mitdb and ptbdb data respectively using Huffman coder, where as the same using DBA were 3.99 and 3.97 respectively. The Huffman encoder showed better performance in terms of bits per sample efficiency (1.46 vs. 1.99) and nearly same for data overhead per packet (1.06% vs. 1.04%). However, the DBA encoder showed lower time complexity. © 2017 Taylor & Francis Group.

关键词： Electrocardiograms

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