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10th international conference on Intelligent Tutoring Systems

作者： Siler, Stephanie Klahr, David Magaro, Cressida Willows, Kevin Mowery, Dana Carnegie Mellon Univ Dept Psychol 5000 Forbes Ave Pittsburgh PA 15213 USA Pittsburgh Sci & Technol Acad Pittsburgh PA 15213 USA

ISBN: (纸本)9783642134364

A vital goal of instruction is to enable learners to transfer acquired knowledge to appropriate future situations For elementary school children in middle-high-SES schools. "explicit" instruction on the Control of Variables Strategy (CVS) has proven to be very effective at promoting transfer. even after time delays. when administered by human instructors [1], [2] and when administered by our computer tutor ("TED" for Training in Experimental design) However, when the same instruction was delivered to students in low-SES schools, near-but especially far-transfer rates were lower We discuss our findings of the predictors of transfer in this population, and an initial investigation assessing the causal status of one candidate factor for far transfer. understanding the logic of CVS Finally, we discuss the potential implications of these findings for ways to adapt instruction to individual students

关键词： transfer experimental design skills computer-based tutor

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Active IRS aided Secure design for Integrated Sensing and SWIPT 10

Active IRS Aided Secure Design for Integrated Sensing and SW...

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10th IEEE international Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, MAPE 2024

作者： Xu, Jinlei Zhang, Jifa Liu, Mingqian Zhao, Nan Al-Dhahir, Naofal Wang, Xianbin School of Information and Communication Engineering Dalian University of Technology Dalian116024 China Xidian University State Key Laboratory of Integrated Service Networks Shanxi Xian710071 China Department of Electrical and Computer Engineering University of Texas at Dallas RichardsonTX75083 United States

ISBN: (纸本)9798331533922

In this paper, an active intelligent reflecting surface (IRS) assisted secure integrated sensing and simultaneous wireless information and power transfer system is proposed with the power splitting (PS) model adopted. Aiming to maximize the harvested power while satisfying the constraints of the integrated sidelobe level ratio and secrecy rate, an optimization problem is formulated to jointly determine the appropriate transmit beamforming, artificial noise (AN) vectors, PS ratios, as well as the amplification factors and phase shifts of the active IRS, which is non-convex and intractable. To overcome this challenge, we leverage semidefinite programming to transform it into a convex counterpart, and propose an alternating optimization algorithm to obtain a solution for the original problem. Simulation results demonstrate the effectiveness of the proposed scheme compared to benchmarks. © 2024 IEEE.

关键词： Inductive power transmission

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Interfacing heterogeneous PDM systems by PLM services for design collaboration

Interfacing heterogeneous PDM systems by PLM services for de...

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international conference on computer Supported Cooperative Work in design

作者： Erkan Gunpinar Hanmin Lee Soonhung Han Samsung Heavy Industry Geoje South Korea E-Engineering Research Center Korea Institute of Machinery and Materials Daejeon South Korea Intelligent Computer-Aided Design Laboratory Department of Mechanical Engineering Korean Advanced Institute of Science Technology (KAIST) Daejeon South Korea

ISBN: (纸本)142440164X

Product data management (PDM) is a popular topic for concurrent engineering to manage and access to product data in a company. there are commercial PDM softwares and companies use different PDM systems which are most suitable for their needs. For collaboration with their suppliers, companies need to interface their PDM systems with PDM systems of their suppliers. It will result faster product information flow between OEM and its suppliers. this study proposes to integrate 2 different PDM systems by PLM services, which is based on Web services. PLM services enables the data exchange through the Internet

关键词： Collaborative work Engineering management Concurrent engineering Web and internet services Product design XML international collaboration Time to market Production computer interfaces

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design and Implementation for Near-optimal Non-coherent Sequence Detection of CPM 10

Design and Implementation for Near-optimal Non-coherent Sequ...

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10th international conference on Wireless Communications and Signal Processing (WCSP)

作者： Lai, Penghui Wang, Shilian Peng, Cong Ma, Yanmin Gao, Kai Yang, Chun Natl Univ Def Technol Sch Elect Sci Changsha Hunan Peoples R China China Acad Engn Phys Technol Inst Elect Engn Mianyang Peoples R China

ISBN: (纸本)9781538661192

Continuous phase modulation (CPM) has been widely used in telecommunication and aeronautical telemetry system due to its high power and spectral efficiency. Non-coherent detection is a kind of feasible CPM detection method if there is large phase noise or residual carrier frequency offset. Near-optimal non-coherent sequence detection, which is based on Viterbi algorithm, has a performance close to that of maximum-likelihood sequence detection (MLSD). However, near-optimal non-coherent detection of CPM is very complicated to he implemented, and it is even more difficult to achieve a high speed due to feedback in the process of calculating branch metrics, add-compare-select (ACS), updating the beginning phase and phase reference symbol. In this paper, we first review near-optimal non-coherent detection of CPM, and then we present a high speed design of FPGA implementation for near-optimal non-coherent detection of a 64 state, 4-ary, length-3T raised cosine (3RC) CPM on Xilinx XC7VX690T device. In our scheme, the frequency pulse truncation is used to simplify the CPM detection. We propose a feedback processing in parallel for different states of CPM trellis to achieve a low latency. Furthermore, we develop a recursive implementation architecture for the process of updating the beginning phase. We achieve the CPM bit rate of 25Mbps for the on-chip processing clock of 100MHz. the results of simulation shows near-optimal non-coherent detection performs much better the coherent detection when residual carrier frequency offset or phase noise exists. It is found that the implementation can achieve a degradation in the Eb/NO from computer simulation of as small as 0.3 dB for an average BER=10(5).

关键词： FPGA Implementation Non-coherent Sequence Detection CPM

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Constructing zero-deficiency parallel prefix adder of minimum depth 05

Constructing zero-deficiency parallel prefix adder of minimu...

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10th Asia and South Pacific design Automation conference

作者： Zhu, Haikun Cheng, Chung-Kuan Graham, Ronald Univ Calif San Diego Dept Comp Sci & Engn La Jolla CA 92093 USA

ISBN: (纸本)0780387368

Parallel prefix adder is a general technique for speeding up binary addition. In unit delay model, we denote the size and depth of an n-bit prefix adder C(n) as s(C)(n) and d(C)(n) respectively. Snir proved that S-C(n) + d(C)(n) >= 2n - 2 holds for arbitrary prefix adders. Hence, a prefix adder is said to be of zero-deficiency if S-C(n) + d(C)(n) = 2n - 2. In this paper, we first propose a new architecture of zero-deficiency prefix adder dubbed Z(d), which provably has the minimal depth among all kinds of zero-deficiency prefix adders. We then design a 64-bit prefix adder Z64, which is derived from Z(d)vertical bar d=8, and compare it against several classical prefix adders of the same bit width in terms of area and delay using logical effort method. the result shows that the proposed Z(d) adder is also promising in practical VLSI design.

关键词： adders parallel architectures integrated circuit design logic CAD circuit CAD zero-deficiency parallel prefix adder binary addition n-bit prefix adder minimal depth Z64 prefix adder logical effort method 64 bit adders computer aided logic design circuit CAD Parallel architectures integrated circuit design cyanogen binary addition

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An Improved Teaching-Learning Based Optimization for Optimization of Flatness of a Strip During a Coiling Process 10th

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10th Multi-Disciplinary international Workshop on Artificial Intelligence (MIWAI)

作者： Bureerat, Sujin Pholdee, Nantiwat Park, Won-Woong Kim, Dong-Kyu Khon Kaen Univ Fac Engn Sustainable & Infrastruct Res & Dev Ctr Dept Mech Engn 123 Moo 16 Mittraphap Rd Khon Kaen Thailand Korea Adv Inst Sci & Technol Natl Res Lab Comp Aided Mat Proc Dept Mech Engn Daejeon South Korea Korea Atom Energy Res Inst Div Neutron Sci Daejeon South Korea

ISBN: (纸本)9783319493978;9783319493961

Performance enhancement of a teaching-learning basedz optimizer (TLBO) for strip flatness optimization during a coiling process is proposed. the method is termed improved teaching-learning based optimization (ITLBO). the new algorithm is achieved by modifying the teaching phase of the original TLBO. the design problem is set to find spool geometry and coiling tension in order to minimize flatness defects during the coiling process. Having implemented the new optimizer with flatness optimization for strip coiling, the results reveal that the proposed method gives a better optimum solution compared to the present state-of-the-art methods.

关键词： Evolutionary algorithm Flatness defect Optimization Strip coiling Teaching-learning based optimization

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Saite AVA experience report on the construction of a virtual learning environment for learning paths methodology 10

Saite AVA experience report on the construction of a virtual...

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10th international conference on computer Supported Education, CSEDU 2018

作者： De Oliveira, Ana Emilia Figueiredo Spinillo, Carla Galvão Almeida, Ana Maria Lima Rabêlo, Dilson José Lins De Assis, Katherine Marjorie Mendonça De Castro E Lima, Camila Santos Rabelo, Aldrea Malheiros Oliveira Haddad, Ana Estela UNA-SUS/UFMA Federal University of Maranhão Viana Vaz Street 41 São Luís Brazil Department of Design Federal University of Paraná General Carneiro Street 460 Curitiba Brazil FOUSP University of São Paulo School of Dentistry Professor Lineu Prestes Avenue 2227 São Paulo Brazil

ISBN: (纸本)9789897582912

In the education modality known as Distance Learning (DL), the virtual learning environment (VLE) is the main platform that students use to take courses. therefore, it should be designed to meet users' expectations and needs and to be appropriate, following the innovations in the field of technology and education. this paper aims to perform a detailing of the VLE of UNA-SUS/UFMA: the Saite VLE, which is based on the methodology of Learning Trails. Saite VLE operation from user's perspective will be explored, highlighting the most important and ground breaking aspects. In addition, it is intended to report the production process of this VLE from the point of view of the teams involved: pedagogical, graphic design and technology. Finally, it is highlighted the importance of applying updated teaching methodologies in DE courses, considering the innovations that constantly emerge in education. Copyright © 2018 by SCITEPRESS - Science and Technology Publications, Lda. All rights reserved.

关键词： E-learning

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Game-based co-design of games for learning with children and teachers: Research goals and a study

Game-based co-design of games for learning with children and...

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2013 CHItaly Doctoral Consortium, CHItaly-DC 2013 - Co-located with the 10th international conference of the Italian SIGCHI Chapter, CHItaly 2013

作者： Melonio, Alessandra Free University of Bozen-Bolzano Faculty of Computer Science Piazza Domenicani Bolzano Italy

this paper reports on the research topics and goals for my Ph.D. In the opening, game-based learning and co-design are overviewed. Issues emerging from the surveyed literature are used to frame the research goals of my Ph.D., broken down into propaedeutic objectives. the paper continues presenting the co-design studies for tackling the stated objectives, and focuses on the study conducted with tablets. the design of this study is discussed rather in details so as to foster the discussion and gather expert feedback from CHItaly community. the paper ends recapping the main lessons learnt across the co-design studies. © 2013 for the individual papers by the papers' authors.

关键词： Teaching

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Registration of blurred images for image mosaic

Registration of blurred images for image mosaic

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11th IEEE international conference on computer-aided design and computer graphics(第11届IEEE国际计算机辅助设计与图形学学术会议 IEEE CAD/graphics 2009)

作者： Xianyong Fang Bin Luo Jin Tang Haifeng Zhao Biao He Hao Wu Key Lab. of Intelligent Computing and Signal Processing of MOE Anhui University Hefei China

Existing methods for the registration of blurred images are efficient for the artificially blurred images or a planar registration. they are not suitable for image mosaic of the source images from a real camera with an almost fixed optical center. We propose a registration method so that a distortion-free registration on naturally captured images can be obtained. It adopts a multi-resolution and robust feature based inter-layer mosaic together. In each layer, Harris corner detector is chosen to effectively detect features and RANSAC is used to find reliable matches for further calibration as well as an initial homography as the initial motion of next layer. Simplex and subspace trust region methods are used consequently to estimate the stable focal length and rotation matrix through the transformation property of feature matches. Experimental results demonstrate the performance of our proposed method.

关键词： Distortion measurement Shape measurement computer graphics Sufficient conditions Solid modeling Convergence Character recognition Image analysis Pattern classification design methodology

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A study on micro hydroforming using shock wave of 355 nm UV-pulsed laser

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APPLIED SURFACE SCIENCE 2017年 417卷 244-249页

作者： Je, Gyeongju Malka, Dror Kim, Hyesu Hong, Sungmoo Shin, Bosung Pusan Natl Univ Dept Cognomechatron Engn Pusan 609735 South Korea Pusan Natl Univ CRC Laser Aided Innovat Mfg Technol 3D Busan 46239 South Korea HIT Fac Engn IL-5810201 Holon Israel

In this paper, we proposed a new manufacturing technology of micro hydroforming using 355 nm ultraviolet(UV)-pulsed laser. Hydroforming is known as a well-established technology to manufacture metallic parts, in particular for mass production of sheet metal, for several industrial applications such as automobiles, battery and military products. In addition laser shock processing(LSP) has been developed as the expanded applications of electrical and mechatronic devices. When the material was exposed to laser beam, multiple phenomena like the photochemical, the photothermal and the photomechanical effect are simultaneously occurred at the spot area. Especially, the photothermal effect due to laser heat transfer makes it hard to improve the accuracy of laser processing. To reduce the thermal effect and to enhance the photomechanical effect, the laser was irradiated under water in this paper. Strong forming pressure of LSP was provided by the higher density of water than air, which could help directly manufacture the thin sheet metal materials like as laser direct writing. We also conducted computer simulation using finite element method(FEM) to demonstrate its deformation behaviour with and without the strain rate effect of 10(4)-10(5) (sec(-1)). Compared with conventional processing technology, this new method can provide high selectivity, excellent hydroforming efficiency and lower cost to achieve micro grooving pattern on the surface of thin metal sheet. (C) 2017 Elsevier B.V. All rights reserved.

关键词： Hydroforming Microforming Laser shock processing(LSP) Finite element method

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