Pub Date : 2011-12-01DOI: 10.1109/NWESP.2011.6088164
Lluís Ferrer-Arnau, V. Parisi-Baradad, R. Reig-Bolaño, P. Martí-Puig, A. Manjabacas
The interpolation of contour pixels, with splines, of an order greater than or equal to two, usually causes oscillations that do not fit the original shape. To overcome this we propose using a least squares filter before carrying out the interpolation. This results in a good compromise between the smoothness of the curve and the best fit to the original contour. Representing the contour with a continuous model instead of a discrete model has many advantages for carrying out calculations, as for example the contour curvature, which involves first and second order derivatives, as well as operations that are not well defined in the discrete world. We also present a new way of calculating FIR approximations to filters based on B-splines. The great advantage of this approximation in the case of least squares filter is that it does not need downsampling. This property makes it invariant to translations, and this is very important in classification tasks.
{"title":"Efficient representation of contours using splines implemented with FIR filters","authors":"Lluís Ferrer-Arnau, V. Parisi-Baradad, R. Reig-Bolaño, P. Martí-Puig, A. Manjabacas","doi":"10.1109/NWESP.2011.6088164","DOIUrl":"https://doi.org/10.1109/NWESP.2011.6088164","url":null,"abstract":"The interpolation of contour pixels, with splines, of an order greater than or equal to two, usually causes oscillations that do not fit the original shape. To overcome this we propose using a least squares filter before carrying out the interpolation. This results in a good compromise between the smoothness of the curve and the best fit to the original contour. Representing the contour with a continuous model instead of a discrete model has many advantages for carrying out calculations, as for example the contour curvature, which involves first and second order derivatives, as well as operations that are not well defined in the discrete world. We also present a new way of calculating FIR approximations to filters based on B-splines. The great advantage of this approximation in the case of least squares filter is that it does not need downsampling. This property makes it invariant to translations, and this is very important in classification tasks.","PeriodicalId":271670,"journal":{"name":"2011 7th International Conference on Next Generation Web Services Practices","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129551011","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 : 2011-12-01DOI: 10.1109/NWESP.2011.6088172
Francisco Huertas, Antonio Navarro
Nowadays, integration of e-learning platforms has become a key issue in e-learning. In order to facilitate this integration, most e-learning platforms depict their functionality in terms of web services. However, the availability of these services in every platform is very heterogeneous. In addition, every platform follows its own philosophy when designing its services. This paper analyses three of the most successful e-learning platforms (Blackboard, Moodle and Sakai), identifying their web services, and comparing their readiness for the development of a virtual campus based on these services. The goal of the paper is to facilitate the integration of these platforms in an information technology infrastructure.
{"title":"Web services availability in e-learning platforms","authors":"Francisco Huertas, Antonio Navarro","doi":"10.1109/NWESP.2011.6088172","DOIUrl":"https://doi.org/10.1109/NWESP.2011.6088172","url":null,"abstract":"Nowadays, integration of e-learning platforms has become a key issue in e-learning. In order to facilitate this integration, most e-learning platforms depict their functionality in terms of web services. However, the availability of these services in every platform is very heterogeneous. In addition, every platform follows its own philosophy when designing its services. This paper analyses three of the most successful e-learning platforms (Blackboard, Moodle and Sakai), identifying their web services, and comparing their readiness for the development of a virtual campus based on these services. The goal of the paper is to facilitate the integration of these platforms in an information technology infrastructure.","PeriodicalId":271670,"journal":{"name":"2011 7th International Conference on Next Generation Web Services Practices","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129704047","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 : 2011-12-01DOI: 10.1109/NWESP.2011.6088205
A. Tapiador, A. Mendo
This article surveys the data attached to OpenID identifiers, as a means to learn the formats and semantics of information currently shared by OpenID users. Identifiers have been harvested from websites that support OpenID authentication and publicly display them. They were subsequently analyzed and the results of the analysis show that half of the identifiers belong to custom domains while a quarter rely on their own OpenID provider. Attached information is related to blogging activities principally, in a HTML embedded format. Most common semantics include tagging, personal details and social relationships.
{"title":"A survey on OpenID identifiers","authors":"A. Tapiador, A. Mendo","doi":"10.1109/NWESP.2011.6088205","DOIUrl":"https://doi.org/10.1109/NWESP.2011.6088205","url":null,"abstract":"This article surveys the data attached to OpenID identifiers, as a means to learn the formats and semantics of information currently shared by OpenID users. Identifiers have been harvested from websites that support OpenID authentication and publicly display them. They were subsequently analyzed and the results of the analysis show that half of the identifiers belong to custom domains while a quarter rely on their own OpenID provider. Attached information is related to blogging activities principally, in a HTML embedded format. Most common semantics include tagging, personal details and social relationships.","PeriodicalId":271670,"journal":{"name":"2011 7th International Conference on Next Generation Web Services Practices","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124905723","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 : 2011-12-01DOI: 10.1109/NWESP.2011.6088220
A. Chaudhary
“This research paper presents a framework, which simplifies the task of developing, deploying, and managing complex, integrated, and standards-compliant OLTP framework solution - an enterprise resource planning software for putting universities online. The framework enables development, configuration, integration, and management of solution at a higher semantic level. It also provides commonly used services such as access to university resources, access control and authentication through biometrics, public key infrastructure, and support for digital signatures. The ability to manage solution at a higher semantic level enables administrators who are not proficient in programming to customize solution in order to address specific needs of the different stakeholders. This includes the ability to customize interfaces for multiple local languages used in university transactions and to customize workflows to conform to the organizational structure and policies to manage access to and retention of university records.
{"title":"A framework for OLTP solution - software subsystem “java based enterprise application”: Scientific approach","authors":"A. Chaudhary","doi":"10.1109/NWESP.2011.6088220","DOIUrl":"https://doi.org/10.1109/NWESP.2011.6088220","url":null,"abstract":"“This research paper presents a framework, which simplifies the task of developing, deploying, and managing complex, integrated, and standards-compliant OLTP framework solution - an enterprise resource planning software for putting universities online. The framework enables development, configuration, integration, and management of solution at a higher semantic level. It also provides commonly used services such as access to university resources, access control and authentication through biometrics, public key infrastructure, and support for digital signatures. The ability to manage solution at a higher semantic level enables administrators who are not proficient in programming to customize solution in order to address specific needs of the different stakeholders. This includes the ability to customize interfaces for multiple local languages used in university transactions and to customize workflows to conform to the organizational structure and policies to manage access to and retention of university records.","PeriodicalId":271670,"journal":{"name":"2011 7th International Conference on Next Generation Web Services Practices","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114291859","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 : 2011-12-01DOI: 10.1109/NWESP.2011.6088230
G. Baxter, T. Connolly, M. Stansfield, N. Tsvetkova, B. Stoimenova
This paper provides an overview on the ‘state of art’ of Web 2.0 use in Higher Education exploring reasons why and how Web 2.0 tools, namely, wikis, blogs and online forums are being used in educational settings. This paper acknowledges that there is an apparent lack of evidence in the Web 2.0 literature regarding the steps taken by educators to introduce Web 2.0 in the classroom. A Web 2.0 implementation framework is presented which provides educators with a set of practical steps to follow when adopting the use of Web 2.0 for the first time. This framework can be tested and developed in educational settings based on the experience of other educators.
{"title":"Introducing Web 2.0 in education: A structured approach adopting a Web 2.0 implementation framework","authors":"G. Baxter, T. Connolly, M. Stansfield, N. Tsvetkova, B. Stoimenova","doi":"10.1109/NWESP.2011.6088230","DOIUrl":"https://doi.org/10.1109/NWESP.2011.6088230","url":null,"abstract":"This paper provides an overview on the ‘state of art’ of Web 2.0 use in Higher Education exploring reasons why and how Web 2.0 tools, namely, wikis, blogs and online forums are being used in educational settings. This paper acknowledges that there is an apparent lack of evidence in the Web 2.0 literature regarding the steps taken by educators to introduce Web 2.0 in the classroom. A Web 2.0 implementation framework is presented which provides educators with a set of practical steps to follow when adopting the use of Web 2.0 for the first time. This framework can be tested and developed in educational settings based on the experience of other educators.","PeriodicalId":271670,"journal":{"name":"2011 7th International Conference on Next Generation Web Services Practices","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123939832","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 : 2011-12-01DOI: 10.1109/NWESP.2011.6088151
C. Baladrón, J. Aguiar, L. Calavia, B. Carro, A. Cadenas, R. de las Heras, A. Sánchez-Esguevillas
Mobility is probably the most important ongoing revolution in the information society of today. The outstanding achievements made in computing and networking during the last decades (which have been available using personal computers at homes and workplaces) are progressively permeating all aspects of life thanks to the plethora of mobile devices at the disposal of the users, including netbooks, PDAs and smartphones. These are also increasingly intelligent and powerful, allowing for rich user interfaces and complex operations and software. On the other hand, the advance of the Internet has given birth to a converged Web which offers a myriad of different services just with a couple of clicks. However, in order to lower the barriers for accessing these services, a platform for ubiquitous service delivery and management is still required, and a viable alternative is presented along this work.
{"title":"Platform for ubiquitous mobile service composition, management and delivery","authors":"C. Baladrón, J. Aguiar, L. Calavia, B. Carro, A. Cadenas, R. de las Heras, A. Sánchez-Esguevillas","doi":"10.1109/NWESP.2011.6088151","DOIUrl":"https://doi.org/10.1109/NWESP.2011.6088151","url":null,"abstract":"Mobility is probably the most important ongoing revolution in the information society of today. The outstanding achievements made in computing and networking during the last decades (which have been available using personal computers at homes and workplaces) are progressively permeating all aspects of life thanks to the plethora of mobile devices at the disposal of the users, including netbooks, PDAs and smartphones. These are also increasingly intelligent and powerful, allowing for rich user interfaces and complex operations and software. On the other hand, the advance of the Internet has given birth to a converged Web which offers a myriad of different services just with a couple of clicks. However, in order to lower the barriers for accessing these services, a platform for ubiquitous service delivery and management is still required, and a viable alternative is presented along this work.","PeriodicalId":271670,"journal":{"name":"2011 7th International Conference on Next Generation Web Services Practices","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121413547","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 : 2011-12-01DOI: 10.1109/NWESP.2011.6088174
M. Khouja, C. Juiz, R. Puigjaner, F. Kamoun
The omnipresence of mobile devices has changed the users behaviour. The content present in the Web is created by simple users. Nevertheless, this content is in the cloud and not shared directly from users. This behaviour is a passive one. In this paper, we propose a service architecture which transforms passive users into service providers. This role is acquired in a specific ambient where users share services with each other. Thanks to this collaboration, people can find adequate solutions to a specific problem. A university campus scenario illustrates the functionalities of the service architecture. The proposed solution has a layered structure that integrates Web services with a semantic modelling of the context. This model describes a specific vocabulary to be used when creating or requesting services. The resulting services are organised in groups according to selected criteria.
{"title":"Transforming passive users into service providers via semantic enhanced service oriented architecture","authors":"M. Khouja, C. Juiz, R. Puigjaner, F. Kamoun","doi":"10.1109/NWESP.2011.6088174","DOIUrl":"https://doi.org/10.1109/NWESP.2011.6088174","url":null,"abstract":"The omnipresence of mobile devices has changed the users behaviour. The content present in the Web is created by simple users. Nevertheless, this content is in the cloud and not shared directly from users. This behaviour is a passive one. In this paper, we propose a service architecture which transforms passive users into service providers. This role is acquired in a specific ambient where users share services with each other. Thanks to this collaboration, people can find adequate solutions to a specific problem. A university campus scenario illustrates the functionalities of the service architecture. The proposed solution has a layered structure that integrates Web services with a semantic modelling of the context. This model describes a specific vocabulary to be used when creating or requesting services. The resulting services are organised in groups according to selected criteria.","PeriodicalId":271670,"journal":{"name":"2011 7th International Conference on Next Generation Web Services Practices","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115372127","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 : 2011-12-01DOI: 10.1109/NWESP.2011.6088194
Rim Rekik, I. Kallel
In this paper, we present a quality assessment method and model in order to measure the performance of dynamic institutional websites. This method called Fuzz-web is based on Multiple Criteria Decision Making. Obviously, a phase of selecting appropriate evaluation criteria is necessary for the decision making process. Since the evaluation process is characterized by subjectivity and imprecision, we attempt to address the problem using fuzzy logic as an intelligent technology. Some tests realized on a set of Tunisian and foreign websites allow us to discuss the proposed reduced fuzzy method and then to validate the decision making result.
{"title":"Fuzzy reduced method for evaluating the quality of institutional web sites","authors":"Rim Rekik, I. Kallel","doi":"10.1109/NWESP.2011.6088194","DOIUrl":"https://doi.org/10.1109/NWESP.2011.6088194","url":null,"abstract":"In this paper, we present a quality assessment method and model in order to measure the performance of dynamic institutional websites. This method called Fuzz-web is based on Multiple Criteria Decision Making. Obviously, a phase of selecting appropriate evaluation criteria is necessary for the decision making process. Since the evaluation process is characterized by subjectivity and imprecision, we attempt to address the problem using fuzzy logic as an intelligent technology. Some tests realized on a set of Tunisian and foreign websites allow us to discuss the proposed reduced fuzzy method and then to validate the decision making result.","PeriodicalId":271670,"journal":{"name":"2011 7th International Conference on Next Generation Web Services Practices","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126360328","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 : 2011-12-01DOI: 10.1109/NWESP.2011.6088166
A. Gil, F. D. L. Prieta, S. Rodríguez, Beatriz Martín
In the current educational context there has been a significant increase in learning object repositories (LOR), which are found in large databases available on the hidden web. All the information about these learning objects (LOs) is described in any metadata labeling standard (LOM, Dublin Core, etc). It is necessary to work and develop solutions that provide efficiency in searching for heterogeneous content and finding distributed context. Distributed information retrieval, or federated search, attempts to respond to the problem of information retrieval in the hidden Web. The main aim of a federated search is to develop models and strategies to get the most benefit from these distributed sources. Thus, users perceive the system as a single point of access to information they require, regardless of the number of sources that exist, its location, or its management mechanism. The process is completely transparent to the user, who does not perceive its complexity and therefore treats any of the information retrieved uniformly. This paper describes an architecture that recovers educational content, called AIREH (Architecture for Intelligent Recovery of Educational content in Heterogeneous Environments), which combines the dynamism and flexibility of multi-agent organizations. The proposal uses systems and mechanisms by which agents acquire roles based on the generation and use of dynamic web services.
{"title":"Educational content retrieval based on semantic Web services","authors":"A. Gil, F. D. L. Prieta, S. Rodríguez, Beatriz Martín","doi":"10.1109/NWESP.2011.6088166","DOIUrl":"https://doi.org/10.1109/NWESP.2011.6088166","url":null,"abstract":"In the current educational context there has been a significant increase in learning object repositories (LOR), which are found in large databases available on the hidden web. All the information about these learning objects (LOs) is described in any metadata labeling standard (LOM, Dublin Core, etc). It is necessary to work and develop solutions that provide efficiency in searching for heterogeneous content and finding distributed context. Distributed information retrieval, or federated search, attempts to respond to the problem of information retrieval in the hidden Web. The main aim of a federated search is to develop models and strategies to get the most benefit from these distributed sources. Thus, users perceive the system as a single point of access to information they require, regardless of the number of sources that exist, its location, or its management mechanism. The process is completely transparent to the user, who does not perceive its complexity and therefore treats any of the information retrieved uniformly. This paper describes an architecture that recovers educational content, called AIREH (Architecture for Intelligent Recovery of Educational content in Heterogeneous Environments), which combines the dynamism and flexibility of multi-agent organizations. The proposal uses systems and mechanisms by which agents acquire roles based on the generation and use of dynamic web services.","PeriodicalId":271670,"journal":{"name":"2011 7th International Conference on Next Generation Web Services Practices","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130265409","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 : 2011-12-01DOI: 10.1109/NWESP.2011.6088179
N. Antequera, J. A. López-Ramos
In this work we give some remarks and counter-measures in order to show that the cryptoanalysis presented in [11] on the secure multicast protocol introduced in [8] does not affect significantly its security.
{"title":"Remarks and countermeasures on a cryptoanalysis of a secure multicast protocol","authors":"N. Antequera, J. A. López-Ramos","doi":"10.1109/NWESP.2011.6088179","DOIUrl":"https://doi.org/10.1109/NWESP.2011.6088179","url":null,"abstract":"In this work we give some remarks and counter-measures in order to show that the cryptoanalysis presented in [11] on the secure multicast protocol introduced in [8] does not affect significantly its security.","PeriodicalId":271670,"journal":{"name":"2011 7th International Conference on Next Generation Web Services Practices","volume":"898 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116391743","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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