Pub Date : 1900-01-01DOI: 10.5220/0002497501310136
Meina Song, Xiaosu Zhan, Junde Song
Self-similarity can successfully characterize and forecast intricate, non-periodic and chaos time series avoiding the limitation of traditional methods on LRD (Long-Range Dependence). The potential principals will be found and the future unknown time series will be forecasted through foregoing training. Therefore it is important to mine the LRD by self-similarity analysis. In this paper, mining self-similarity of time series is introduced. And the practical value can be found from two cases study respectively for seasonvariable trend forecast and network traffic.
自相似可以成功地描述和预测复杂的、非周期的和混沌的时间序列，避免了传统方法对LRD (long - term Dependence)的限制。通过上述训练，发现潜在的主体，并预测未来未知的时间序列。因此，通过自相似分析来挖掘LRD具有重要的意义。本文介绍了时间序列的自相似度挖掘方法。并分别对季节变量趋势预测和网络流量进行了实例分析，发现了该方法的实用价值。
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Pub Date : 1900-01-01DOI: 10.5220/0002670200130020
H. Tellioglu
CoMex (Coordination Mechanism) is a system to coordinate the execution of tasks accessing coordinable entities. It uses coordination rules to describe the temporal and logical order of tasks performed in a cooperative work setting. These rules coordinate semantic dependencies between work activities carried out by different users. The coordination rules are implemented in a relational database. This makes CoMex unique and easy to integrate into an existing application. By illustrating a case from a real work setting we show how these rules can be created, which methodology can be applied for their production and how CoMex can be used in a web application. We also describe the implementation of CoMex and its architecture.
{"title":"CoMex - A Mechanism for Coordination of Task Execution in Group Work","authors":"H. Tellioglu","doi":"10.5220/0002670200130020","DOIUrl":"https://doi.org/10.5220/0002670200130020","url":null,"abstract":"CoMex (Coordination Mechanism) is a system to coordinate the execution of tasks accessing coordinable entities. It uses coordination rules to describe the temporal and logical order of tasks performed in a cooperative work setting. These rules coordinate semantic dependencies between work activities carried out by different users. The coordination rules are implemented in a relational database. This makes CoMex unique and easy to integrate into an existing application. By illustrating a case from a real work setting we show how these rules can be created, which methodology can be applied for their production and how CoMex can be used in a web application. We also describe the implementation of CoMex and its architecture.","PeriodicalId":217890,"journal":{"name":"Computer Supported Acitivity Coordination","volume":"399 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125702829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0002479000450054
J. Grundspeņķis, E. Lavendelis
A transportation and logistics domain belongs to complex problems domains because there are many geographically distributed companies who may enter or leave the system at any time. Analysis of the great number of publications reveals that although traditional mathematical modelling and simulation techniques still dominate, new approaches start to appear. Agent technologies and multiagent systems emerge into transportation and logistics domain only recently. The paper proposes the developed multiagent based simulation tool for decision support in transportation and logistics domain. The multiagent system consists from clients’ agents and logistics companies agents which may participate in four types of auctions, namely, English auction, Dutch auction, First-price sealed-bid auction and Vickrey auction. A client is an auctioneer who is making decision about the best offer of delivering goods. The simulation tool is implemented using Borland C++ Builder and MS Access database.
运输和物流领域属于复杂问题领域，因为在地理上分布着许多公司，这些公司随时可能进入或离开系统。对大量出版物的分析表明，尽管传统的数学建模和仿真技术仍然占主导地位，但新的方法开始出现。Agent技术和多Agent系统是近年来才进入运输物流领域的。提出了一种基于多智能体的交通物流决策支持仿真工具。多代理系统由客户代理和物流公司代理组成，可参与四种类型的拍卖，即英式拍卖、荷兰式拍卖、首价密封拍卖和维克里拍卖。客户是决定交付货物的最佳报价的拍卖商。仿真工具采用Borland c++ Builder和MS Access数据库实现。
{"title":"Multiagent Based Simulation Tool for Transportation and Logistics Decision Support","authors":"J. Grundspeņķis, E. Lavendelis","doi":"10.5220/0002479000450054","DOIUrl":"https://doi.org/10.5220/0002479000450054","url":null,"abstract":"A transportation and logistics domain belongs to complex problems domains because there are many geographically distributed companies who may enter or leave the system at any time. Analysis of the great number of publications reveals that although traditional mathematical modelling and simulation techniques still dominate, new approaches start to appear. Agent technologies and multiagent systems emerge into transportation and logistics domain only recently. The paper proposes the developed multiagent based simulation tool for decision support in transportation and logistics domain. The multiagent system consists from clients’ agents and logistics companies agents which may participate in four types of auctions, namely, English auction, Dutch auction, First-price sealed-bid auction and Vickrey auction. A client is an auctioneer who is making decision about the best offer of delivering goods. The simulation tool is implemented using Borland C++ Builder and MS Access database.","PeriodicalId":217890,"journal":{"name":"Computer Supported Acitivity Coordination","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131213448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0002683000210030
Kevin Crowston, B. Scozzi
Free/Libre Open Source Software (FLOSS) is primarily developed by distributed teams. Developers contribute from around the world and coordinate their activity almost exclusively by means of email and bulletin boards. FLOSS development teams some how profit from the advantages and evade the challenges of distributed software development. Despite the relevance of the FLOSS both for research and practice, few studies have investigated the work practices adopted by these development teams. In this paper we investigate the structure and the coordination practices adopted by development teams during the bug-fixing process, which is considered one of main areas of FLOSS project success. In particular, based on a codification of the messages recorded in the bug tracking system of four projects, we identify the accomplished tasks, the adopted coordination mechanisms, and the role undertaken by both the FLOSS development team and the FLOSS community. We conclude with suggestions for further research.
{"title":"Coordination practices within FLOSS development teams: The bug fixing process","authors":"Kevin Crowston, B. Scozzi","doi":"10.5220/0002683000210030","DOIUrl":"https://doi.org/10.5220/0002683000210030","url":null,"abstract":"Free/Libre Open Source Software (FLOSS) is primarily developed by distributed teams. Developers contribute from around the world and coordinate their activity almost exclusively by means of email and bulletin boards. FLOSS development teams some how profit from the advantages and evade the challenges of distributed software development. Despite the relevance of the FLOSS both for research and practice, few studies have investigated the work practices adopted by these development teams. In this paper we investigate the structure and the coordination practices adopted by development teams during the bug-fixing process, which is considered one of main areas of FLOSS project success. In particular, based on a codification of the messages recorded in the bug tracking system of four projects, we identify the accomplished tasks, the adopted coordination mechanisms, and the role undertaken by both the FLOSS development team and the FLOSS community. We conclude with suggestions for further research.","PeriodicalId":217890,"journal":{"name":"Computer Supported Acitivity Coordination","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131339504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0002672101030115
Â. Nobre
The current complexity of organisational environments is related to the challenges of the knowledge economy and it calls for a drastic and breakthrough development of conceptual frameworks able to inform new and innovative organisational practices. Knowledge management and organisational learning already take this lead though it is necessary to complement them and to use deeper and more complex insights able to grasp present organisational reality. Social philosophy in general and action philosophy in particular represent a powerful contribution to the improvement of organisational developmental potential. The present paper represents an illustration and an introduction to a drastically needed mediation between philosophical contributions and management theory and practice.
{"title":"Collaboration: is it only a metaphor? - an action perspective on how to make it real","authors":"Â. Nobre","doi":"10.5220/0002672101030115","DOIUrl":"https://doi.org/10.5220/0002672101030115","url":null,"abstract":"The current complexity of organisational environments is related to the challenges of the knowledge economy and it calls for a drastic and breakthrough development of conceptual frameworks able to inform new and innovative organisational practices. Knowledge management and organisational learning already take this lead though it is necessary to complement them and to use deeper and more complex insights able to grasp present organisational reality. Social philosophy in general and action philosophy in particular represent a powerful contribution to the improvement of organisational developmental potential. The present paper represents an illustration and an introduction to a drastically needed mediation between philosophical contributions and management theory and practice.","PeriodicalId":217890,"journal":{"name":"Computer Supported Acitivity Coordination","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133207538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0002659700810090
Keishi Suzumura, Natsuko Hikage, Y. Murayama
In this research we try and implement communication system using the metaphor of a door on the World Wide Web (WWW) as a media for novel types of informal communications. We call those informal communications through a door ”on-door communications.” As an on-door communication system, we have designed and implemented a system for a chat at a net door. One has a door page on WWW and a chat system is presented there so that the others pay a visit to have a chat at the door with two features for awareness, viz. knock and shadow. A knock on the door is used to let the others to notice of the arrival of a visitor at the door with an auditory signal. A shadow indicates the existence of visitors as well as that of the door owner. This paper reports on our design and implementation of our prototype system as well as its operations.
{"title":"A chat system with knock-on-the-door sound and shadow","authors":"Keishi Suzumura, Natsuko Hikage, Y. Murayama","doi":"10.5220/0002659700810090","DOIUrl":"https://doi.org/10.5220/0002659700810090","url":null,"abstract":"In this research we try and implement communication system using the metaphor of a door on the World Wide Web (WWW) as a media for novel types of informal communications. We call those informal communications through a door ”on-door communications.” As an on-door communication system, we have designed and implemented a system for a chat at a net door. One has a door page on WWW and a chat system is presented there so that the others pay a visit to have a chat at the door with two features for awareness, viz. knock and shadow. A knock on the door is used to let the others to notice of the arrival of a visitor at the door with an auditory signal. A shadow indicates the existence of visitors as well as that of the door owner. This paper reports on our design and implementation of our prototype system as well as its operations.","PeriodicalId":217890,"journal":{"name":"Computer Supported Acitivity Coordination","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114716521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0002676900510060
E. Kesseler
To fly aircraft many people from various organizations have to cooperate. The justifiable strict safety requirements have led to very strict allocation of responsibilities and corresponding separation of tasks. Over the years every party has developed its own proprietary system. The resulting patchwork of systems exhibits a slow response to the current market-driven changes at increasingly unaffordable costs. In the general domain servicedriven network-centric solutions are used. To assess the feasibility of these solutions for air transport a prototype for air transport has been realized. For the prototype a multi national consortium has been established. Our project experience yields some lessons learned about computer support to facilitate such co-operation.
{"title":"Supporting the sky Computer mediated co-operation to fly aircraft","authors":"E. Kesseler","doi":"10.5220/0002676900510060","DOIUrl":"https://doi.org/10.5220/0002676900510060","url":null,"abstract":"To fly aircraft many people from various organizations have to cooperate. The justifiable strict safety requirements have led to very strict allocation of responsibilities and corresponding separation of tasks. Over the years every party has developed its own proprietary system. The resulting patchwork of systems exhibits a slow response to the current market-driven changes at increasingly unaffordable costs. In the general domain servicedriven network-centric solutions are used. To assess the feasibility of these solutions for air transport a prototype for air transport has been realized. For the prototype a multi national consortium has been established. Our project experience yields some lessons learned about computer support to facilitate such co-operation.","PeriodicalId":217890,"journal":{"name":"Computer Supported Acitivity Coordination","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127013800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5220/0002671001570169
S. Aljareh, B. Rossiter, M. Heather
Security problems in collaborative work between multiple agencies are less well understood than those in the business and defence worlds. We develop a perspective for policies and models that is task-based on a need-toknow basis. These policies are represented by two protocols, the first CTCP (Collaboration Task-based Creation Protocol) dealing with negotiation, decision and agreement between the parties involved and the second CTRP (Collaboration Task-based Run-time Protocol) responsible for the operation of the policy. The two protocols and the relationship between them are defined in Petri-Nets. The overall model is formally defined using a categorical pullback construction. Each of the protocols, represented as Petri-Nets for statetransition purposes, is a category-valued functor in the pullback.
{"title":"A Formal Security Model for Collaboration in Multi-agency Networks","authors":"S. Aljareh, B. Rossiter, M. Heather","doi":"10.5220/0002671001570169","DOIUrl":"https://doi.org/10.5220/0002671001570169","url":null,"abstract":"Security problems in collaborative work between multiple agencies are less well understood than those in the business and defence worlds. We develop a perspective for policies and models that is task-based on a need-toknow basis. These policies are represented by two protocols, the first CTCP (Collaboration Task-based Creation Protocol) dealing with negotiation, decision and agreement between the parties involved and the second CTRP (Collaboration Task-based Run-time Protocol) responsible for the operation of the policy. The two protocols and the relationship between them are defined in Petri-Nets. The overall model is formally defined using a categorical pullback construction. Each of the protocols, represented as Petri-Nets for statetransition purposes, is a category-valued functor in the pullback.","PeriodicalId":217890,"journal":{"name":"Computer Supported Acitivity Coordination","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128489308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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