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Visualization of progressive idea development in a knowledge building community 11

Visualization of progressive idea development in a knowledge...

11th international conference on computer Supported Collaborative Learning: Exploring the Material Conditions of Learning, CSCL 2015

作者： Kici, Derya University of Toronto Canada

ISBN: (纸本)9780990355076

This study aims to visualize the progressive idea development in an undergraduate level knowledge-building classroom in teacher education. In order to do this, I investigated the online discourse of the pre-service teachers in tandem with Knowledge Building Discourse Explorer (KBDeX;Oshima, Oshima, & Matsuzawa, 2012) that is a social network analysisbased collaborative learning discourse analysis tool. This study presents preliminary methods and results to depict word connectedness that might help uncover idea development. © ISLS

关键词： computer aided instruction

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Improving Quality of Medical service with Mobile Health Software 6

Improving Quality of Medical Service with Mobile Health Soft...

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6th international conference on Emerging Ubiquitous systems and Pervasive Networks (EUSPN) / 5th international conference on Current and Future Trends of Information and Communication Technologies in Healthcare (ICTH)

作者： Pereira, Ana Marins, Fernando Rodrigues, Bruno Portela, Filipe Santos, Manuel Filipe Machado, Jose Rua, Fernando Silva, Alvaro Abelha, Antonio Univ Minho Algoritmi Res Ctr Braga Portugal Ctr Hosp Porto Intens Care Unit Oporto Portugal

An increasing number of m-Health applications are being developed benefiting health service delivery. In this paper, a new methodology based on the principle of calm computing applied to diagnostic and therapeutic procedure reporting is proposed. A mobile application was designed for the physicians of one of the Portuguese major hospitals, which takes advantage of a multi-agent interoperability platform, the Agency for the Integration, Diffusion and Archive (AIDA). This application allows the visualization of inpatients and outpatients medical reports in a quicker and safer manner, in addition to offer a remote access to information. This project shows the advantages in the use of mobile software in a medical environment but the first step is always to build or use an interoperability platform, flexible, adaptable and pervasive. The platform offers a comprehensive set of services that restricts the development of mobile software almost exclusively to the mobile user interface design. The technology was tested and assessed in a real context by intensivists. (C) 2015 The Authors. Published by Elsevier B.V.

关键词： m-Health application Healthcare Healthcare Professionals Healthcare Quality Clinical Information INTCare Calm Computing Pervasive systems Ubiquitouse

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A Strategy for Small Files Processing in HDFS

A Strategy for Small Files Processing in HDFS

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The Second international conference of Young computer Scientists, Engineers and Educators,ICYCSEE 2016

作者： Zhenshan Bao Shikun Xu Wenbo Zhang Juncheng Chen Jianli Liu College of Computer Science Beijing University of Technology

Hadoop distributed file system(HDFS) as a popular cloud storage platform, benefiting from its scalable, reliable and low-cost storage *** it is mainly designed for batch processing of large files, it's mean that small files cannot be efficiently handled by HDFS. In this paper, we propose a mechanism to store small files in HDFS. In our approach, file size need to be judged before uploading to HDFS. If the file size is less than the size of the block,all correlated small files will be merged into one single file and we will build index for each small file. Furthermore, prefetching and caching mechanism are used to improve the reading efficiency of small files. Meanwhile, for the new small files,we can execute appending operation on the basis of merged file. Contrasting to original HDFS, experimental results show that the storage efficiency of small files is improved.

关键词： Hadoop HDFS Small file File merging Prefetching and caching Appending operation

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The Application of NFC Verification system in Warehouse Management system

The Application of NFC Verification System in Warehouse Mana...

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2016 6th international conference on Information Engineering for Mechanics and Materials(ICIMM 2016)

作者： Fagui Liu Zheng Qin Yigong Zhang Xiao Hou School of Computer Science and Engineering South China University of Technology

The commercial applications of NFC(Near Field Communication) have become increasingly mature. Many smartphones have become to carry NFC chip in default for communication. Warehouse management in the logistics industry has played a more and more important role in the current development of the electronic commerce. How to ensure the efficiency of warehousing in the most cost effective way is currently a difficult problem to be resolved. NFC technology application is a suitable solution for the verification module of the Warehouse Management system(WMS). We have designed and implemented the NFC picking verification system, which is mainly consisting of three parts: server, mobile client and tag printing system. Server uses the Spring architecture, and communicates with clients via HTTP protocol. Mobile client is an Android application using NFC technology to achieve verification steps. The tag printing system acquires SKU information from the logistics company and prints it to the NFC tag for verification. The NFC verification module is integrated into the activities of WMS, which can provide a new exploratory research for the commercial application of NFC.

关键词： NFC Android Warehouse Management system

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Vehicle Automation-Algorithm for Changing/Merging Lane Behavior

Vehicle Automation-Algorithm for Changing/Merging Lane Behav...

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2016 international conference on computer, Mechatronics and Electronic Engineering (CMEE 2016)

作者： Yao CHEN Yan-long JIANG Philippe GICQUEL Nanjing University of aeronautics and Astronautics (NUAA)

The object of this article is to improve the intelligent vehicles' "ACC system"(Adaptive Cruise Control) and "Braking system" function and permits the vehicle have more sophisticated changing lane behavior and be able to deal with more complex situations when changing lane. Then test the function in the web simulator, which is designed by a start-up called CIL4 Sys and is software whose robustness for different functions needs to be test. Firstly, to improve the vehicle's changing/merging lane behavior, two algorithms are created: Algorithm 1 "changing/merging lane decision algorithm" sub system and Algorithm 2 "obstacle avoidance algorithm" sub system. The combination of these two algorithms serves as two different functions. A function dealing with the full process of intelligent vehicle's changing/merging lane in highway: Function 1 "Changing/merging lane function". And a function for obstacle avoidance in city road: Function 2 "Obstacle avoidance function". The main tools for developing the algorithm is Matlab/Simulink, the main environment for compiling the algorithm is VS2012. To test the function, a UML model is needed to integrate the function to the profile of that of the enterprise. And the UML model for this sub system has been constructed using PTC Integrity Modeler. Please note that all these functions consider the traffic act.

关键词： Intelligent vehicle Changing/merging lane Obstacle avoidance Web simulation Function development

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PWLM³-based automatic performance model estimation method for HDFS write and read operations

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FUTURE GENERATION computer systemS-THE international JOURNAL OF Escience 2015年 50卷 127-139页

作者： Tian, Feng Ma, Tian Dong, Bo Zheng, Qinghua Xi An Jiao Tong Univ MOE Key Lab Intelligent Networks & Network Secur Xian 710049 Peoples R China Xi An Jiao Tong Univ Syst Engn Inst Xian 710049 Peoples R China Xi An Jiao Tong Univ Dept Comp Sci & Technol Xian 710049 Peoples R China

There is a growing need for the development of an automatic performance model estimation method for Hadoop Distributed File system (HDFS) write and read (W/R) operations in order to deal with constant software improvement and updates, parameter configuration changes, hardware heterogeneity, and their Quality of service,(QoS) evaluation. Extant research based on single linear system model has a limited ability to explain the performance variations due to changes in HDFS parameters such as block size. These variations reveal some typical characteristics of nonlinear systems and are an obstacle in achieving effective automatic performance estimation. In order to deal with this challenge, a piecewise-linear multimodel modeling (PWLM3)-based automatic performance model estimation method is proposed for HDFS W/R performance. In the proposed method, a standard model base is built to standardize the model representation of every submodel. Moreover, a cluster quality assessment strategy is applied to evaluate the optimal number of submodels, and a submodel selection strategy is implemented to construct performance model candidates and improve the computation efficiency of the proposed method. In addition, Levenberg-Marquardt (LM) and Universal Global Optimization (UGO) algorithms are adopted to estimate the values of switch points and identify undetermined parameters of performance model candidates. Then the performance model is selected among these candidates according to Root Mean Squared Error (RMSE) indicator. Experimental results demonstrate that the PWLM3-based performance model provides a good understanding and description of nonlinear characteristics of HDFS W/R performance and achieves better identification precision than a single linear system model-based one. (C) 2015 Elsevier B.V. All rights reserved.

关键词： Cloud storage service QoS HDFS Performance modeling Nonlinear system

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Accelerated Sparse Learning on Tag Annotation for Web service Discovery

Accelerated Sparse Learning on Tag Annotation for Web Servic...

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IEEE international conference on Web services (ICWS)

作者： Lo, Wei Yin, Jianwei Wu, Zhaohui Zhejiang Univ Coll Comp Sci & Technol Hangzhou Zhejiang Peoples R China

ISBN: (纸本)9781467372725

Learning latent features of Web services will greatly boost the ability of search engine to discover relevant services. Extracted information from Web service Description Language (WSDL) documents of services is less efficient due to the limited usage of data source. Recently, a number of ongoing works have indicated incorporating service tag, a textual symbol provides additional contextual and semantic information, helps to enhance the process of service discovery. However, a large number of relevant tags for Web services are difficult to obtain in practice. In this paper, we propose a Web service Tag Learning system to address this issue. WTLearning system adopts sparse learning technique to fully understand the structure of high dimensional textual information extracted from WSDL documents and tags. Meanwhile, our proposed system implements Alternative Direction Method of Multiplier (ADMM) strategy, which accelerates solving process in Big Data environment. Extensive experiments are conducted based on real-world dataset, which consists of 24,569 Web services. The results demonstrate the effectiveness of WTLearning system. Specifically, our system outperforms other state-of-the-art frameworks in tag classification and recommendation tasks, with 29.6% and 27.1% performance gaining respectively.

关键词： Web service Tag Mining Sparse Learning service Discovery

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Research on the strategy of controlling Ordos industrialization and eco-environment system based on SD model

Research on the strategy of controlling Ordos industrializat...

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international conference on Environmental Engineering and computer Application, ICEECA 2014

作者： Li, L.M. Zhen, J.H. Luo, S.S. He, S.P. College of Geography Science Inner Mongolia Normal University Hohhot China

ISBN: (纸本)9781138028074

Based on the connotative meaning of industrialization and eco-environment, the current situation of Ordos, and the simulated status of the industrialization and eco-environment system, the author chose five kinds of typical development patterns to make scenario analysis using SD model. The results showed that: SD model solved the complexity, feedback, and time-varying problems of industrialization and eco- environment system. In the future, Ordos should take the road of industrial economy and proceed resources development and environmental protection coordinately. However, in terms of the discussion of the conclusion and the theory of how to set the various indexes, its effectiveness and correctness remain to be tested by the practice. © 2015 Taylor & Francis Group, London.

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Economy-oriented deadline scheduling policy for render system using IaaS cloud 15th

Economy-oriented deadline scheduling policy for render syste...

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15th international conference on Algorithms and Architectures for Parallel Processing, ICA3PP 2015

作者： Li, Qian Wu, Weiguo Sun, Zeyu Wang, Lei Huang, Jianhang Department of Computer Science and Technology Xi'an Jiaotong University Xi'an710049 China

ISBN: (纸本)9783319271361

Along with the increase of demand for high definition animation film, when the render system with local computing resources cannot supply enough resources to satisfy the user requirement for time, acquiring additional resources is necessary. The Infrastructure as a service (IaaS) Cloud offers user with computing infrastructures on-demand to be used based on the paradigm of pay-per-use, which provides extra resources with fee to extending the capacity of render system with local cluster. Consequently, the scheduling policy under the hybrid render system should consider the constraints of deadline and budget and billing policy. In this paper, an economy-oriented deadline scheduling policy is proposed, which not only guarantees the deadline for user by the way of employing resources for rendering, but also offers an economic way to hire resources from IaaS Cloud provider reasonably. The experiment with single workload and multi workloads shows that the proposed policy can finish the user’s rendering job before deadline as well as obtain approving cost efficient. © Springer international Publishing Switzerland 2015.

关键词： Infrastructure as a service (IaaS)

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Combined active and passive microwave remote sensing of soil moisture for vegetated surfaces at L-band

Combined active and passive microwave remote sensing of soil...

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IEEE international Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Huanting Huang Tien-Hao Liao Leung Tsang Eni G. Njoku Andreas Colliander Thomas Jackson Simon Yueh Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor MI USA Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA USDA Agricultural Research Service Hydrology and Remote Sensing Laboratory MD USA

The distorted Born approximation (DBA) combined with the numerical solutions of Maxwell equations (NMM3D) has been used for the radar backscattering model for NASA's Soil Moisture Active Passive (SMAP) mission. The models for vegetated surfaces such as wheat, grass, soybean and corn have been validated with the Soil Moisture Active Passive Validation Experiment 2012 (SMAPVEX12) data. In this paper we report progress on development of a consistent model for combined active and passive microwave remote sensing of vegetated surfaces by using the same approach to obtain backscatter and emissivity. The active model DBA/NMM3D is extended to calculate bistatic scattering for each of the three scattering mechanisms: volume, double bounce and surface scattering. Then emissivity is obtained by integration of the bistatic scattering. An advantage of this combined active and passive model is that the same physical parameters of vegetation and soil surfaces are used in both the active model and the passive model. The β parameter that relates backscattering to emissivity is also derived for various vegetated surfaces.

关键词： Scattering Mathematical model Soil moisture Vegetation mapping Rough surfaces Surface roughness Biological system modeling

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