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检索条件"任意字段=2009 International Conference on Computer Technology and Development, ICCTD 2009"

共 3769 条记录，以下是1321-1330 订阅

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An ontology-based portal for credit risk analysis

An ontology-based portal for credit risk analysis

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2nd IEEE international conference on computer Science and Information technology

作者： Kotsiantis, S. B. Kanellopoulos, D. Karioti, V. Tampakas, V. Educational Software Development Laboratory Department of Mathematics Greece Technological Educational Institution of Patras Greece

ISBN: (纸本)9781424445189

Credit risk analysis is an important topic in the financial risk management. Due to recent financial crises, credit risk analysis has been the major focus of financial and banking industry. An accurate estimation of credit risk could be transformed into a more efficient use of economic capital. Existing models for estimating credit risk are not semantics-based. The objective of this work was to design an intelligent web portal to serve as service provider for credit risk analysis. The portal has been conceived to help users (e.g. credit managers working in banks) to detect bad payers. For this purpose, the knowledge of the financial domain has been represented by means of ontology, which has been used to guide the design of the application and to supply the system with semantic capabilities. The reasoning engine of the proposed system executes logic rules related with well-established financial variables. These rules characterize that a payer tends to become a bad one or not.

关键词： machine learning ontologies credit rating

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Design and development of a Distributed Tabletop System using EBITA Framework

Design and Development of a Distributed Tabletop System usin...

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4th international conference on Ubiquitous Information Technologies

作者： Kim, Minyoung Cho, Yongjoo Park, Kyoung Shin Department of Computer Science Sangmyung University South Korea Division of Digital Media Technology Sangmyung University South Korea Department of Multimedia Technology Dankook University South Korea

ISBN: (纸本)9781424451319

Over the past decade, tabletop systems are becoming more popular. However, prior works on tabletop system have mostly focused on supporting user interactions with digital contents on one single tabletop display, which are not easily extendable. In this paper we present a new scalable distributed tabletop system consisted of master/slave computer and tangible interfaces to provide high-resolution interactive tabletop display surfaces. Our work is to develop a tabletop system constructed with LCD panels and a cluster of low-cost commodity PCs to support a large high-resolution scalable tiled display. It also employs the tangible user interface using the infrared camera tracking and tangible blocks to support intuitive user interaction on the tabletop surface. In this research, EBITA (Environment for Building Interactive Tangible Applications) framework is developed to support various modules necessary for easy construction of any interactive high-resolution applications that run on the distributed tabletop system. This paper briefly describes the design of EBITA framework and detail implementations of the current prototype of distributed tabletop system. Then it demonstrates two applications developed using EBITA framework: 2D high-resolution image viewer and 3D block crash game.

关键词： Tabletop System Tiled Display Framework Tangible User Interface

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Comprehensive evaluation on regulation schemes of gas transmission pipelines

Comprehensive evaluation on regulation schemes of gas transm...

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international conference on Pipelines and Trenchless technology 2009, ICPTT 2009: Advances and Experiences with Pipelines and Trenchless technology for Water, Sewer, Gas, and Oil Applications

作者： Jia, Wenlong Li, Changjun Wu, Xia Yang, Yongquan School of Petroleum Engineering Southwest Petroleum University No.8 Xindu Avenue Chengdu 610500 China Department of Laws and Regulation Tarim Oil Exploratory Development Headquarters Kuala Xinjiang 841000 China

ISBN: (纸本)9780784410738

In view of the problem that how to select the natural gas pipeline's optimization regulation schemes, the analysis method is utilized to select the pipeline's regulation schemes evaluation indexes which include the pipeline's flow rate, operation income, risk and gas storage capacity. According to the emphasis points of the regulation schemes, the AHP method is adopted to calculate the indexes' weights. The gas pipeline's operational database and the optimal operation scheme are constructed in this paper. Based on the grey relational analysis method, a multi-objective comprehensive evaluation mathematical model which considers the indexes is established. The model measures the degree by which various regulation schemes approach the optimal one. Then the priority order of multiple schemes is determined. The computer program is developed to evaluate a pipeline's regulation schemes. The study shows that the model and algorithm discussed in this paper are feasible. © 2009 ASCE.

关键词： Natural gas pipelines

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Structural Adaptation for Patch-Based Image Denoising

Structural Adaptation for Patch-Based Image Denoising

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international Asia conference on Informatics in Control, Automation and Robotics

作者： Du Xiaofeng Li Cuihua Yang Dunxu Xiamen Univ Dept Automat Xiamen Fujian Province Peoples R China Xiamen Univ Dept Comp Sci Xiamen Fujian Province Peoples R China

ISBN: (纸本)9780769535197

Most existing patch-based denoising methods are based on fixed size patch and fixed range of neighborhood, while producing state-of-the-art denoising results, the quality of the algorithm is significantly dependent on patch size. Suppose that patch size is related to image pattern, a structural adaption method for the selection of patch size is proposed in this paper. Due to the mutual similarity between the training samples, the simulation results illustrate the original approach can be effectively improved by adopted this method.

关键词： Image denoising Noise reduction Robotics and automation computer science Wiener filter Gaussian noise Compaction Asia Informatics Automatic control

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Promoting self-regulated learning skills in agent-based learning environments

Promoting self-regulated learning skills in agent-based lear...

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17th international conference on computers in Education, ICCE 2009

作者： Biswas, Gautam Roscoe, Rod Jeong, Hogyeong Sulcer, Brian Dept. of EECS/ISIS Vanderbilt University Nashville TN United States

ISBN: (纸本)9789868473539

We have developed computer environments that support learning by teaching, concept mapping, scaffolding, and the use of self regulated learning (SRL) skills by social interactions with virtual agents. More specifically, students teach a computer agent, Betty, and can monitor her progress by asking her questions and getting her to take quizzes. The system provides SRL support via dialog-embedded prompts. Our primary goals have been to support learning in complex science domains and facilitate development of self-regulated learning skills. Our analyses have identified actions such as "asking queries" and "tracing explanations" as key self-regulation strategies that promote learning.

关键词： computer aided instruction

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A development Platform and Electronic Modules for Automated Test up to 20 Gbps

A Development Platform and Electronic Modules for Automated ...

引用

international Test conference 2009

作者： Keezer, D. C. Gray, C. Majid, A. Minier, D. Ducharme, P. Georgia Inst Technol Atlanta GA 30332 USA IBM Corp Bromont PQ Canada

ISBN: (纸本)9781424448685

An adaptable platform for the development of customized ATE and test-support modules is described. The purpose of the platform is to provide a hardware framework for assembling combinations of specialized test modules for applications that are not well addressed by conventional general-purpose ATE alone. The platform can also be used to test, characterize, and calibrate individual modules prior to use within either a platform-based application or within a traditional ATE environment. The paper describes some of the salient features of the platform and one completed example for an all-optical packet-switching network called "Data Vortex" operating at 2.5Gbps on each of 18 channels (>40Gbps aggregate burst data rate). Two other example modules demonstrate even higher data rates. One is a dual-channel, bidirectional 5Gbps FPGA-based module with loopback, jitter-injection, and 2:1 XOR multiplexing (up to 10Gbps). This module exploits recent advances in FPGA technology that enable very high data rates at relatively low cost. Another example module synthesizes two 10Gbps data streams using 16:1 SiGe serializers;and then combines these using an InP XOR gate to form a 20Gbps test stimulus channel. While the platform and modules have interesting characteristics, individually they do not form a complete solution. However the various possible combinations, together with special-purpose modules, may help solve some of the most difficult test applications in the near future. Therefore, this paper tries to present the key features in a way that the reader may extrapolate to future test challenges.

关键词： Indium phosphide

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Music box: Composing and performing visual music

Music box: Composing and performing visual music

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international conference on Advances in computer Entertainment technology, ACE 2009

作者： Grace, Lindsay Miami University Oxford OH 45056 United States

ISBN: (纸本)9781605588643

Music Box is an artistic implementation of emergent behavior and its use to create music. Music Box employs Craig Reynold's flocking algorithm to display animated notes that rise from a written score, then move to create a distinctive flock-lead musical arrangement. The result is emergent sound;a musical arrangement directed by the visual representation of flocking. The goal of this creative exploration is to free the musical score from the prevalent model of composer, performer and listener supported by standard models. Instead the experience is more democratic. Here the composer suggests, the performer follows a few loose rules, and the listener plays with the composition. This is accomplished through the development of artificial intelligence software that applies the visual rules of flocking behaviors to the algorithmic arrangement of musical pitches. Importantly, these visual rules are manipulated by the software user resulting in a dual performance and composition. The result is musical authoring based on the user model of computer video games. © ACM 2009.

关键词： computer games

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Exploration on the Feasibility of Building Muscle-computer Interfaces using Neck and Shoulder Motions

Exploration on the Feasibility of Building Muscle-Computer I...

引用

Annual international conference of the IEEE-Engineering-in-Medicine-and-Biology-Society

作者： Zhang Xu Chen Xiang Lantz, Vuokko Yang Ji-hai Wang Kong-qiao Univ Sci & Technol China Dept Elect Sci & Technol Inst Biomed Engn Hefei 230027 Peoples R China Nokia Res Ctr Multimodal Interact Tampere Finland Nokia Investment Co Ltd Nokia Res Ctr Beijing Peoples R China

ISBN: (纸本)9781424432950

This paper investigates the feasibility of building muscle-computer interfaces starting from surface Electromyography (SEMG) -based neck and shoulder motion recognition. In order to reach the research goal, a real-time SEMG sensing, processing and classification system was developed firstly. Then two types of SEMG recognition experiments, namely user-specific and user-independent classification, were designed and conducted on seven kinds of neck and shoulder motions to explore the feasibility of using these motions as input commands of muscle-computer interfaces. In all 9 subjects took part in these experiments, 97.8% and 84.6% overall average recognition accuracies were obtained in user-specific and user-independent experiments respectively. The experimental results demonstrate that it is possible to build muscle-computer interfaces with neck and shoulder motions. In addition, the results of cross-time experiments designed to explore the relationship between training and accuracy in user-specific recognition indicate that users can interact accurately with computers using the defined motions only after four times training in different days.

关键词： Muscle

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Context-aware mobile media and social networks 09

Context-aware mobile media and social networks

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Living in a world as colorful as you - 11th international conference on Human-computer Interaction with Mobile Devices and Services, MobileHCI 2009

作者： Häkkilä, Jonna Schmidt, Albrecht Mäntyjärvi, Jani Sahami, Alireza Åkerman, Panu Dey, Anind K. Nokia Research Center Yrttipellontie 1 90230 Oulu Finland University of Duisburg-Essen Schuetzenbahn 70 45117 Essen Germany VTT Kaitoväylä 1 90570 Oulu Finland Nokia Research Center Visiokatu 1 33270 Oulu Finland Carnegie Mellon University 5000 Forbes Avenue Pittsburgh United States

ISBN: (纸本)9781605582818

Context-awareness is one of the rising trends of future mobile technology, and due to advances in technology development, new application and service concepts are being developed and demonstrated in an ever-increasing manner. This workshop brings together researchers and practitioners working on humancomputer interaction (HCI) aspects of context-aware mobile technology and communities to present their insights and research on new concepts, interaction design for mobile context-awareness, usability challenges, collaborative context-aware services and applications for supporting communities, and other topics related to HCI with mobile context-aware technology.

关键词： Human computer interaction

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RAPUNSEL: Improving self-efficacy and self-esteem with an educational computer game

RAPUNSEL: Improving self-efficacy and self-esteem with an ed...

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17th international conference on computers in Education, ICCE 2009

作者： Plass, Jan L. Goldman, Ricki Flanagan, Mary Perlin, Ken Institute for Games for Learning New York University United States Institute for Games for Learning Dartmouth College United States

ISBN: (纸本)9789868473539

This paper reports assessment results of a four-year interdisciplinary research project with the goal to design and test a web-based software environment for real-time, applied programming for underrepresented students' early literacy (RAPUNSEL). The study presented here assessed the impact of the resulting computer game environment called Peeps, which was designed to afford girls with opportunities to develop computer programming skills in a setting where programming was not an end in itself but a means to achieve goals that were relevant and meaningful to the players and facilitate safe ways to learn through error. A pre-post survey study with 59 participants found increases in students' general self-efficacy, self-esteem, computer self-efficacy, and programming self-efficacy. Implications for educators and game designers and future development plans will be discussed during the presentation.

关键词： computer games

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