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CDVE Tables of Contents: 0405060708091011121314

CDVE 2006: International Conference on Cooperative Design, Visualization, and Engineering

Fullname:Cooperative Design, Visualization, and Engineering: Third International Conference
Editors:Yuhua Luo
Location:Palma de Mallorca, Spain
Dates:2006-Sep-17 to 2006-Sep-20
Publisher:Springer Berlin Heidelberg
Series:Lecture Notes in Computer Science 4101
Standard No:DOI: 10.1007/11863649; ISBN: 978-3-540-44494-7 (print), 978-3-540-44496-1 (online); hcibib: CDVE06
Papers:40
Pages:335
Links:Online Proceedings
Automated Social Network Analysis for Collaborative Work BIBAFull-Text 1-8
  Larry Korba; Ronggong Song; George Yee; Andrew S. Patrick
Inter-networked computers enable virtual collaborative work. In the course of interacting with one another, individuals send and receive messages and files of various sorts. This may be done within specialized collaborative work environments, or by simply employing a combination of different communication tools and applications. In the course of doing their work, collaborators perform different actions that create and/or otherwise manipulate digital artifacts that are related to different aspects of their collaboration. Social network analysis is used to develop a fuller understanding of interactions between people. We describe a software prototype of a tool that automatically measures and analyzes aspects of collaboration developing visualizations of likely social interactions. In this paper we describe the system, some early results, and several different possible applications of the technology.
Jabber Based Protocol for Collaborative Mobile Work BIBAFull-Text 9-16
  Martin Klíma; Pavel Slavík
In this paper we introduce an application level protocol for sharing of XML based data. This protocol is especially designed for mobile environment. It is able to deal with unreliability of the mobile wireless networks where the client's bandwidth is limited and the connection may frequently fail. We describe the synchronization process of the data from the client side as well as from the server side. The protocol can deal with data synchronization conflicts and can prevent them in most cases by using data locking mechanism. Data buffering mechanism from client and server side is supporting the re-establishing of data consistency after connection failure. The protocol has been verified by means of a scenario from a facility management domain.
Using Autonomic Computing and Click Stream Analysis for Problem Identification in Continuous Production BIBAFull-Text 17-24
  Wallace A. Pinheiro; Jonice Oliveira; Jano Moreira de Souza; Geraldo Xexéo; Marcelo Perazolo
Problem identification is an area of research from Autonomic Computing. The problem identification can bring several benefits in a production line, especially in continuous production of the Information Technology Industry. This work presents an approach based on Symptom Ontologies to facilitate problem identification and solution prediction, and use of clickstream analysis for recommendation of material, when the solution is not appropriated.
Data Exchange in CAD During Iterative Work with Heterogeneous Systems BIBAKFull-Text 25-32
  Martin Ota; Ivan Jelínek
This contribution is focused on the data exchange during the iterative work with heterogeneous CAD systems. The important cognition is the fact that without an application infrastructure it is not possible to design a universal data format for data exchange which allows mutual transformation of any data without non returnable distortion. The paper shows the data exchange scenarios that help to solve this problem. The proxy management and differential conversion are introduced. The proxy management is based on storing an additional data in the transformed files. The main pillar of the differential conversion is the log of changes and identifiers' mapping. Both strategies are focused on the problems of the cyclic conversions used during the iterative model/drawing creation and both involve the agents that manage additional data structures, which help to correct the data during backward import.
Keywords: CAD; data exchange; differential conversion; iterative work
A Collaborative Design Platform for Assembly Process Planning BIBAKFull-Text 33-40
  Yanning Xu; Weiwei Liu
This paper presents a web-based virtual environment which supports designers geographically distributed to engage in the same assembly scenario and complete the assembly task synchronously. Firstly, a client-server based architecture for collaborative assembly is discussed. The discussion highlights how to decompose the collaborative assembly environment into several functional modules, and how to deploy the right module on the right side. Secondly, some key technologies including task classification and subdivision, and multimodal interaction, are discussed in detail. At last, we give our implementations and discuss limitations in our current research effort.
Keywords: Virtual Reality; Collaborative Design; Assembly Design
Mosaics of Visualization: An Approach to Embedded Interaction Through Identification Process BIBAFull-Text 41-48
  José Bravo; Ramón Hervás; Gabriel Chavira; Salvador W. Nava
New forms of interaction are arising closer to the users and embedded in the intelligent environments. In this work we present a context-aware application through Radiofrequency Identification (RFID) offering services to the users in an implicit way. The only required interaction with the system is to wear a little device called tag (smart label). Some of these services such as location, presence, access or inventory are implicit in this technology. Another, more important for us, is the visualization service, we call "Mosaic of Visualization". Our main goal is to link the easy interaction by means of the identification process, through RFID technology, with the presentation of information.
The Use of Cooperative Visualization in the Enhancement of Corporate Planning in Small and Medium-Sized Enterprises BIBAKFull-Text 49-56
  Maryna Z. Solesvik
Small and medium-sized enterprises (SMEs) significantly contribute to the majority of national economies. Often they are confronted with difficulties. This paper reports on a project that was carried out in order to help managers of small and medium-sized enterprises to improve managerial processes. This work proposes a visual model for diagnosing corporate planning in SMEs. Developed computer programs contain tests that allow collaborative examination of the state of planning in SMEs and visually analyzing the results. By using this model, managers of small and medium-sized enterprises in collaboration with experts can improve corporate planning. The proposed visual model was tested in small and medium-sized enterprises and proved to be valuable for enhancing corporate planning.
Keywords: cooperative visualization; small and medium-sized enterprises; planning
Collaborative Web-Based 3D Masterplanning BIBAFull-Text 57-64
  John Counsell; Steve Smith; Nada Bates-Brkljac
This paper describes an approach to empowering heterogeneous groups of people to share the tasks of digitising and updating buildings that may convey a credible sense of presence. We argue that more effective tools are required to clearly display alternative and ad-hoc local planning proposals in web based interactive 3D, free at the point of access. Initial workshops have shown that such tools are only likely to be used if those so doing can influence the outcome. Consensus needs to be obtained among a broad group to exert strong influence. Tools are therefore needed to share concerns, examine alternatives, and propose solutions through collaborative citizen based proposals, examination and discussion. Consequently the VEPs Interreg project has been examining how to optimise shared web based collaborative digital 3D modelling and discussion, focused on urban and rural environments, where the increasing availability of LiDAR laser scanning offers appropriately accurate remote sensed data.
Use of Patterns for Knowledge Management in the Ceramic Tile Design Chain BIBAKFull-Text 65-74
  María Jesús Agost; Fernando Romero; Carlos Vila; Pedro Company
Knowledge Management (KM) is a complex objective, especially in the instance of extended enterprises consisting of SMEs, and critical in new product design and development (NPD). The use of patterns is essential to get KM in collaborative NPD processes. This paper presents the use of patterns adopted in the CE-TILE project to standardize information and knowledge in collaborative work. The different types of patterns and models established for the knowledge capture, formalization and configuration are also described.
Keywords: Collaborative Knowledge Management; Reference Model; Patterns; Design Process; Project Methodology; Collaborative Cluster; Product Lifecycle Management
Towards an Agent and Knowledge Enacted Dynamic Workflow Management System for Intelligent Manufacturing Grid BIBAFull-Text 75-82
  He Yanli; He Weiping; Yang Haicheng; Hao Guangke; Zhao Kai
To cope with the dynamism of the intelligent manufacturing grid environment, an agent and knowledge enacted dynamic workflow management system is proposed to support the manufacturing process modeling, control and management, smoothing the integration of the flow of the work during collaborative manufacturing process. Autonomous software agents are used to implement the functional components and to encapsulate the end user and participating resource in the system. The domain knowledge is constructed to support the agent conversation and abstract workflow modeling; Knowledge based rule mechanisms is applied to support process scheduling and enactment in the multi-agent environment. The design and prototype implementation of the system is discussed and demonstrated with a case study.
A Cooperative Engineering Environment Using Virtual Reality with Sensory User Interfaces for Steel Bridge Erection BIBAFull-Text 83-90
  Nobuyoshi Yabuki; Hiroki Machinaka; Zhantao Li
In this research, a product model for representing steel girder bridges was developed, based on IFC of IAI. In order to control 3D objects in the CAD world effectively, first, a virtual reality (VR) CAD system was developed for engineering of steel girder bridges by using the developed product model, Java 3D, liquid crystal shutter glasses, infrared emitter unit, etc. Then, to improve the user interface, an electro-magnetic sensor system was added for controlling 3D objects in the virtual world. This system can be used for interference checking between moving girders and surrounding structures during erection. In order to enable multiple users to view the 3D bridge model from different locations and angles, a cooperative engineering environment was proposed. In this environment, each user wears a head mounted display (HMD) instead of liquid crystal shutter glasses. A prototype system is being developed for verification of the proposed methodology.
A Collaborative Multimedia Editing System Based on Shallow Nature Language Parsing BIBAFull-Text 91-98
  Donglin Cao; Dazhen Lin; Shaozi Li
As the collaborative editing system becomes prevalent, further requirement on content based collaboration is presented by editors. This paper focuses on how to implement content based collaboration. In order to combine the advantage of nature language processing technology in content parsing, we present the shallow nature language parsing technology in collaborative editing system. This technology is based on the segmentation and the text classification. This paper also discusses the reason why the shallow nature language parsing technology is useful in content based collaboration and its further use in collaborative editing system. In addition, it has already been used in our collaborative multimedia editing system which is designed for Chinese teaching material editor. From the result of experiment, it shows that the system really reduces the time in editing collaboration.
Formulation and a MOGA Based Approach for Multi-UAV Cooperative Reconnaissance BIBAFull-Text 99-106
  Jing Tian; Lincheng Shen; Yanxing Zheng
Multi-UAV cooperative reconnaissance is one of the most challenging research area for UAV operations. The objective is to coordinate different kinds of sensor-bearing UAVs conducting reconnaissance on a set of targets within predefined time windows at minimum cost, while satisfying the reconnaissance demands, and without violating the maximum permitted travel time for each UAV. This paper presents a multi-objective optimization mathematical formulation for the problem. Different from previous formulations, the model takes the reconnaissance resolution demands of the targets and time window constraints into account. Then a multi-objective genetic algorithm CR-MOGA is put forward to solve the problem. In CR-MOGA, Pareto optimality based selection is introduced to generate the parent individuals. Novel evolutionary operators are designed according to the specifics of the problem. Finally the simulation results show the efficiency of our algorithm.
A New Migration Algorithm of Mobile Agent Based on Ant Colony Algorithm in P2P Network BIBAFull-Text 107-114
  Shaozi Li; Yang Cao; Huowang Chen
This paper presents our recent research work on Peer to Peer distributed information sharing based on mobile agent. From various perspectives, our work focuses on how to improve information retrieval efficiency in a P2P distributed information sharing system. A new model based on mobile agent is proposed and the new migration algorithm of mobile agent based on ant colony algorithm (ACA) is presented to implement P2P information retrieval. In order to evaluate and validate the model, we built a simulated P2P prototype consisting of a network of peer nodes; mobile agent migrating in the network, making peer nodes communication with each other. The results show some advantages of the proposed approach for the P2P distributed information sharing based on mobile agent.
Protecting Agent from Attack in Grid Computing BIBAFull-Text 115-122
  Byungryong Kim
P2P networks provide a basic form of anonymity, and the participating nodes exchange information without knowing who is the original sender. Packets are relayed through the adjacent nodes and do not contain identity information about the sender. Since these packets are passed through a dynamically-formed path and since the final destination is not known until the last time, it is impossible to know who has sent it in the beginning and who will be the final recipient. The anonymity, however, breaks down at download/upload time because the IP address of the host from which the data is downloaded (or to which it is uploaded) can be known to the outside. We propose a technique to provide anonymity for both the client and the server node. A relay node along the path between the client and the server node is selected as an agent node and works as a proxy: the client will see it as the server and the server looks at it as the client, hence protecting the identity of the client and the server from anonymity-breaking attacks.
An Information Integration Platform for Mobile Computing BIBAFull-Text 123-131
  Guofeng Qin; Qiyan Li
An information integration platform is developed to transport messages, files, structural data, semi structural data, and stream media at the same time. The GPS (Global Position System) information of the vehicles can be sent to the control center by wireless communication network such as GPRS (General Packet Radio Service), CDMA (Code Division Multiple Access), Internet and Intranet. The information integration platform control center can then dispatch command and receives information from the mobile terminals. GPS, GPRS, CDMA, Internet, Intranet and M-DMB (Mobile Digital Multimedia Broadcasting) network are all integrated into the platform. Different kinds of data can be sent and received simultaneity. The stream media can replay in time. There are two key technologies in the information integration platform; one is server cluster, other is mobile terminal development.
Integration of Collaborative Design and Process Planning for Artificial Bone Scaffold 3D Printer Nozzle BIBAFull-Text 132-140
  Yan-En Wang; Xiu-Tian Yan; Raam Kumar Maruthachalam; Sheng-Min Wei
The requirement for high-quality product with reduced cost and time-to-market in multidisciplinary project is demanding. Integration of design and process planning with computer aided techniques can provide a solution to this challenge. This paper describes a reference model of integrating computer aided techniques to aid the concurrent development of a multi-nozzle 3D printer for fabricating artificial bone scaffold at the University of Strathclyde and the Northwestern Polytechnical University. This integration reference model, including design tools such as Material Computation (MC), Computational Fluid Dynamics (CFD), and CAD, and planning tool such as CAM techniques, is employed to support this special 3D printer development. The high precision multi-nozzle development was used as a case study to validate this integration of concurrent design and process planning. CAD tools were used to provide several nozzle design concepts and a rigorous CFD analysis of several nozzle designs under the same boundary conditions were undertaken to refine and evaluate them by research staff from both institutions. This cooperative conceptual design case study demonstrated that it drastically reduced development time and cost in devising nozzle conceptual sketch design and optimizing the nozzle design for 3D printer. This makes it an important step in designing a high precision artificial bone rapid manufacturing machine.
Usability Ranking of Intercity Bus Passenger Seats Using Fuzzy Axiomatic Design Theory BIBAKFull-Text 141-148
  Ergün Eraslan; Diyar Akay; Mustafa Kurt
Usability, considering user satisfaction along with the user performance, is one of the key factors in determining the success of a product in today's competitive market. Designing usable intercity bus seats is important for passengers during the long hours of traveling. Comfort, aesthetic, safety, convenience to the body posture, durability, harmoniousness with the seat accessories and operability are expected usability dimensions of seats for both user and the designers. Aim of this study is to identify and rank ten alternative seats of an intercity bus manufacturing company according to these usability attributes. The products are evaluated by five subjects and assessed for each usability attributes by using linguistic variables. Then Fuzzy Axiomatic Design Theory (FADT), which is the combination of second axiom, is used as a multi attribute decision making tool to determine most usable seat design solution. Design range is defined by design engineers and system ranges for seats are obtained from linguistic assessment of five subjects for applying conformance testing in cooperative engineering.
Keywords: Usability; Fuzzy Axiomatic Design; Conformance Testing; Cooperative Engineering
A Study on BDI Agent for the Integration of Engineering Processes BIBAFull-Text 149-155
  Hanmin Lee; Seong-Whan Park; Jai-Kyung Lee; Je-Sung Bang; Jaeho Lee
Integration of product design software and automation of their execution can greatly reduce design cycle time and manufacturing cost, and significantly improve product performance, quality, and reliability. The previous approaches are control-driven integration which cannot deal with dynamic change of the environment because the controller executes a sequence of tasks according to the pre-defined workflow. In this paper, we propose a data-driven integration of engineering processes. Each BDI (Belief-Desire-Intention) agent acts autonomously according to the change of the shared data, so the proposed agent architecture can deal with dynamic change of the environment such as user's input parameters.
The Usefulness of CSCW Systems in Process-Sensitive Software Engineering Environments BIBAKFull-Text 156-163
  Rafael Duque; Crescencio Bravo
Software creation, development and maintenance are activities that require a great quantity of cooperative work. In the last years, several languages to model the diverse software processes have been proposed. However, these software Process Modelling Languages (PML) have not ended up being standardized nor being implanted by a majority in industry. The so-called Process-sensitive Software Engineering Environments (PSEE) are software engineering environments with support to manage PML. Each PSEE proposed has a PML associated, so there is a clear dependence between the software engineering environment and its modelling language. In this article, the cooperative support that a PSEE should offer is analyzed, and an environment with support for software PMLs is presented. This environment provides workspaces for distributed synchronous collaboration where work teams can develop a software project.
Keywords: CSCW; PSEE; PML; Software Engineering; Cooperative Engineering
A Framework for Real-Time Collaborative Engineering in the Automotive Industries BIBAKFull-Text 164-173
  Ansgar R. S. Gerlicher
Today, many different companies are involved in the automotive engineering process. The OEM, subcontractors and suppliers all need to collaborate and access the same data. Specialized applications are used in the process of designing vehicle electrical systems. These applications use proprietary data formats and do not support collaborative engineering. Thus collaboration methods are limited to turn-taking, split-combine and copy-merge. To become application independent and stay future-proof, a new trend is the transformation of data from the proprietary data formats to the Extensible Markup Language (XML). This will allow new ways of viewing, editing and analyzing the data using new and existing applications and tools that use XML as a data model. This paper presents a novel software framework that allows easy enhancement of any such applications with the ability of collaborative real-time editing. Support for heterogeneous applications, a new flexible plug-in architecture and easy application integration are some of its key features.
Keywords: XML; Collaborative Engineering; Real-time Collaboration; Software Engineering; Groupware; CSCW; Vehicle Electrical System
An Intelligent Tutoring System for Construction and Real Estate Management Master Degree Studies BIBAFull-Text 174-181
  Arturas Kaklauskas; Edmundas Kazimieras Zavadskas; Ruslanas Ditkevicius
Three e-learning Master degree studies were introduced at Vilnius Gediminas Technical University since 1999. In order to increase the efficiency and quality of e-learning studies, an Intelligent Tutoring System for Construction and Real Estate Management Master Degree Studies (ITS-CREM) was developed. ITS-CREM consists of six subsystems: Domain Model, Student Model, Tutor and Testing Model, Database of Computer Learning Systems, Decision Support Subsystem and Graphic Interface. ITS-CREM is briefly analyzed in the paper.
Visualizing Space-Based Interactions Among Distributed Agents: Environmental Planning at the Inner-City Scale BIBAFull-Text 182-191
  Dino Borri; Domenico Camarda
Since from the 1980s, computer science and artificial intelligence have focused on environmental planning, with high interest in analysing real and virtual cognitive agents at work. This is true for procedures, long-range planning, operational planning, as well as factors and scenarios of future events, future risks, multi-agent organisation, and resource-based planning.
   This long-range, large-scale, strategy-driven interest has generally prevented short-term planning, low-scale and detailed planning from being explored with an intelligent-planning approach. This paper shows a case of small-scale innercity planning for environmental and development issues in an urban context, with a sustainably sound approach.
   In this concern, a system architecture has been set up, to support the interaction of local social, economic, financial agents by a web-based geographic interface able to visualize, share, channel substantial information in the planning process with a space-based approach. The details of setup methodologies and results are analyzed, trying to find potentials and critical characters of a georeferenced cooperative work, particularly attentive to the role of space-based cognitions and discourses in multi-agent interactions.
Visible Display of Automated Observation of Collaborative Workspaces BIBAFull-Text 192-199
  John Counsell; Marie-Cecile Puybaraud
Through the Facilities Innovation Research Programme, (www. facilitiesinnovation.co.uk) staff at the University of the West of England, Bristol and at Johnson Controls have been investigating systems that have the potential to track collaborative activities in the workplace, capture them, and in real time respond to them. The longer term goal is to develop embedded technologies that provide intelligent feedback in predictable office environments but also address the unpredictable working environments of nomadic knowledge workers and of remote workers engaged in virtual collaboration with those physically present. Some of these systems are relatively close to market and others are less immediately applicable. It is suggested that a heterogeneous mix of such systems is likely to be necessary for some time to come. A prototype real time location system for workers has been developed and is being tested to determine the extent to which it assists in better management of space and support of collaborative activity.
A System to Support Collaborative Mobile Electronic Meetings BIBAFull-Text 200-210
  Crescencio Bravo; Pablo García
In this article we focus on the meetings that according to different aims are held in organizations. In these work meetings the participants share information, discuss ideas, make decisions and produce documents. Specifically, we approach a type of meeting in which the participants are at distance and make use of mobile devices on wireless networks. Along this line, we have developed a system to support these new kinds of electronic meeting settings. The system design was informed with our observations of real meetings, the analysis of some EMSs and other information collection techniques. The system, called REMO, follows a three-stage model (pre-meeting, meeting and post-meeting) and includes a wide set of collaborative tools. REMO can be used both from a central meeting place, with video-projectors and interactive whiteboards, and from remote locations.
Efficient Technique for Fast IP Traceback BIBAFull-Text 211-218
  Byungryong Kim
This paper suggests techniques to restrain the convergence time and the combinatorial explosion. IP traceback technique allows a victim to trace the routing path that an attacker has followed to reach his system. It has an effect of deterring future attackers as well as capturing the current one. FMS (Fragment Marking Scheme) is an efficient implementation of IP traceback. Every router participating in FMS leaves its IP information on the passing-through packets, partially and with some probability. The victim, then, can collect the packets and analyze them to reconstruct the attacking path. FMS and similar schemes, however, suffer a long convergence time to build the path when the attack path is lengthy. Also they suffer a combinatorial explosion problem when there are multiple attack paths. The convergence time is reduced considerably by insuring all routers have close-to-equal chance of sending their IP fragments through a distance-weighted sampling technique. The combinatorial explosion is avoided by tagging each IP fragment with the corresponding router's hashed identifier.
Research on Fuzzy Kohonen Neural Network for Fuzzy Clustering BIBAFull-Text 219-224
  ShuiSheng Ye; XiaoLin Qin; Hong Cai
A model of fuzzy Kohonen neural network for fuzzy clustering is presented. It uses fuzzy membership degree to describe approximate degree for input patterns and clusters' centers, which is represented by learning rate. In addition, in order to extract more useful information from input patterns, a supervised learning, called post-learning phase, is added to adaptive learning. Then the model is applied for a specific clustering's problem, the result shows it can greatly improve performances of recognition and classification.
Applying Pattern-Based Techniques to Design Groupware Applications BIBAKFull-Text 225-233
  Ana I. Molina; Miguel A. Redondo; Manuel Ortega
In the last years the production of systems supporting learning and work in group has been high. However, the design and development of this kind of systems is difficult, especially due to the multidisciplinarity involved. We propose a design and development process based on the use of several conceptual models. In this process several techniques are used. In this paper we present our proposal of using pattern-based techniques to design groupware systems. We define collaboration patterns for modeling collaborative tasks and protocols of cooperation. These techniques are part of a methodological framework which outlines several stages and notations to describe other aspects of a groupware system.
Keywords: Modeling, patterns, methodological approach, CSCW, groupware design, interaction design
Metrics for Evaluating Design of Reconfigurable Machine Tools BIBAKFull-Text 234-241
  Carles Riba Romeva; Roberto Pérez; Horacio Ahuett; A. Jorge L. Sánchez; María D. Domínguez; G. Arturo Molina
This paper shows the development of metrics for evaluate the design of reconfigurable machine tools to process bamboo, which allows the numerical comparison of reconfigurability parameters in the design process, based on a concurrent design methodology to Reconfigurable Machine Tool development. In response, metrics for evaluate the development of this type of machine tools is outlined.
Keywords: Metric; Reconfigurability; Design; Machine Tools
Computer-Aided Modelling, Evaluation and Management of Construction Projects According to PLM Concept BIBAKFull-Text 242-250
  Darius Migilinskas; Leonas Ustinovichius
The major problem for investors in construction area is to choose the financially effective construction alternative, most often associated with underestimated actual demand for resources. The lack of information feedback among all participants of the project and the uncertainty treats at the design and construction stages are presented in this paper. Solution is the theoretical 3D building information model, combined with resource demand calculations, comparison of alternatives and determination the duration of all construction project life stages. The software based on this aggregate 4D PLM model can be the mean of effective management of the construction project, embracing planning, design, economic calculations, construction, management, usage and maintenance of the completed building. The paper also describes multiple criteria evaluation software used to identify the most effective construction alternative with presented suggestions of implementation in practice.
Keywords: Project life cycle management; 3D and 4D modelling; computer-aided evaluation and management in construction
Development of an e-Engineering Framework Based on Service-Oriented Architectures BIBAFull-Text 251-258
  Jai-Kyung Lee; Hyeon Soo Kim; Seung Hak Kuk; Seong-Whan Park
This paper presents an ongoing project on the development of an e-Engineering framework proposed by KIMM (Korea Institute of Machinery and Materials). The framework is based on a number of advanced technologies, such as intelligent software agents, Web Services, and Service-Oriented Architecture. And it aims to provide an integrated design environment to support integrating personnel, design activities and engineering resources during product development process. Especially Service-Oriented Architecture technologies enable to utilize and integrate effectively various engineering resources on the heterogeneous geographically distributed computing environments.
A Real-Time PDA Based Communication Appliance for Multi-users BIBAFull-Text 259-266
  Seongah Chin; Youngmee Choi; Moonwon Choo
PDA devices have become an accessory that a large community uses for managing their personal data. With the development of new devices with additional network and video capabilities they gain the potential to be used in more comprehensive communication scenarios too. On the example of usage for image communication we show, how new applications must not be viewed in an isolated way and need innovative approaches for both system hard-and software enhancement as well as for the integration with heterogeneous infrastructure components. The challenging task for creating so called communication appliances is not just to transfer existing desktop mechanisms to smaller and mobile computers but to consider their specifics and establish additional architectures and mechanisms that meet those best. Our paper describes the prototyping of image communication device based on an off-the-shelf PDA, design and usage experiences and potential future enhancements.
Flexible Collaboration over XML Documents BIBAFull-Text 267-274
  Claudia-Lavinia Ignat; Moira C. Norrie
XML documents are increasingly being used to mark up various kinds of data from web content to scientific data. Often these documents need to be collaboratively created and edited by a group of users. In this paper we present a flexible solution for supporting collaboration over XML documents. Merging of user work is based on the operations performed. A key to achieving flexibility for the definition and resolution of conflicts was to keep the operations distributed throughout the tree model of the document associated with the nodes to which they refer.
An Ambient Workplace for Raising Awareness of Internet-Based Cooperation BIBAFull-Text 275-286
  Benoît Otjacques; Rod McCall; Fernand Feltz
This paper discusses a prototype desktop ambient display system known as the Ambient Workplace (AW) that is used to visualise some aspects of cooperation among a group of co-workers. The AW draws on the ambient technology paradigm by providing a visualisation that represents the interactions of the co-workers (either individuals or groups) in their peripheral attention zone. The paper discusses the development of a prototype system based on a series of indices and uses a maritime flags metaphor. The paper also presents some early results from a user study.
A Building's Refurbishment Knowledge and Device Based Decision Support System BIBAFull-Text 287-294
  Edmundas Kazimieras Zavadskas; Arturas Kaklauskas; Povilas Vainiunas; Ruta Dubakiene; Andrius Gulbinas; Mindaugas Krutinis; Petras Cyras; Liudas Rimkus
The integration of knowledge-based, devices-based and decision support systems have a very promising future in scientific research. The authors of this paper participated in the project Framework 6, 'Bringing Retrofit Innovation to the Application of Public Buildings' (BRITA in PuBs). One of the project's goals was to develop a Building's Refurbishment Knowledge and Device Based Decision Support System (BR-KDDSS), which consists of a Decision Support Subsystem, Knowledge Subsystem and Device Subsystem. In order to demonstrate the integration of knowledge, device and decision support systems, the BR-KDDSS will be considered as an example.
Verbal Analysis of Risk Elements in Construction Contracts BIBAFull-Text 295-302
  Leonas Ustinovichius; Edmundas Kazimieras Zavadskas; Darius Migilinskas; Anna Malewska; Paul Nowak; Andrew Minasowicz
The paper aims to analyse the construction contracts provided by FIDIC (International Federation of Consulting Engineers) and to determine their usefulness in respect of technical risk management. Contractors of international construction projects are often faced with complicated situations working with design documentation. One of the potential financial risk factor is associated with the frequent changes of documents and improper channels of communication between project partners. One of the major aspects is project financial and technical risk management. Project developers need various models of managing large and complex projects.
Application of Association Rules for Finding Correlations Among Students Preliminary Knowledge BIBAFull-Text 303-310
  Sylvia B. Encheva; Sharil Tumin
This paper aims at finding an efficient way for discovering which specific knowledge each student does not possess in order to successfully start a new course or to proceed with another section in a current subject. Most existing tutoring systems respond to students' mistakes by providing links to a collection of teaching materials. Such an approach does the individual needs of each student. Our idea is to apply a holistic approach that involves looking at the whole system of each student knowledge within an subject rather than just concentrating on single mistakes, lack of knowledge or misconception.
Specifying Collaborative Tasks of a CSCL Environment with IMS-LD BIBAFull-Text 311-317
  Francisco Jurado; Miguel A. Redondo; Manuel Ortega
The standardization of eLearning environments is causing a constant evolution of the standards, the specifications, the reference models and the best practices of these specifications. Mainly, this evolution is a consequence of the educational and computational paradigms which the standardization applies and of the pedagogic and cognitive requirements of the learner using these environments. "Instructional Design" or "Learning Design" (LD) is an approach on specifications in the standardization process centred on cognitive characteristics and on the learning process itself. In this case, the learning process is isolated from the learning object design. This is, LD is centred on "how to learn", not in "what to learn". IMS Learning Design (IMS-LD) is the specification used to describe the learning design. We are working in the AULA_IE project whose objective is to evaluate different standards and to check their application and contribution in Computer Supported Collaborative Learning (CSCL) environments. As a consequence of this evaluation we have observed a lack of semantics when some activities and tasks are specified. Based on this result, we propose a reference model inside the IMS specifications core.
Concurrent Engineering of Mechatronic Products in Virtual Enterprises: Selection and Deployment of a PLM System for the Machine Tool Industry BIBAFull-Text 318-326
  Joaquín Aca; Marcopolo Ramos; Jose L. Serrano; Horacio Ahuett; Arturo Molina
The development of mechatronic products requires the integration of different technical disciplines by personnel who reside in separate locations, a fact that is particularly evident for the case of virtual enterprises. Concurrent engineering of these products can be enhanced significantly through the use of sophisticated data management and visualization tools such as Product Lifecycle Management (PLM). The key benefit of a PLM system is its ability to facilitate the coordination of the activities among geographically distributed team members. This paper describes models and procedures that were developed and implemented during the selection and configuration of a PLM environment for machine tool design and construction in a virtual enterprise. The experiences from this case, particularly the bottlenecks and how they were addressed are discussed in detail. Finally, recommendations for better deployment of PLM for similar conditions are presented.
An Application Service Provider (ASP) Based Project Management System BIBAFull-Text 327-335
  Tai Sik Lee; Young Hyun Kim; Dong Wook Lee; Saumya R. Swain
The construction industry has continuously tries to improve the productivity of construction projects through Information Technologies (IT). It is not easy for the subcontractor to apply IT towards their projects due to the smaller scale of operations and the problem of the cost of equipment, programmer, and operator to introduce IT. To overcome the high investment risk we need a device. This paper presents IT outsourcing for subcontractors that effectively accommodates the demand of project information management. The purpose is the conceptual design of an Application Service Provider (ASP) based project management system. This paper offers the conceptual proposal for the mutual communication and information collection between the construction industry subjects through collaboration and the coordination.