Revista Romana de Interactiune Om-Calculator

91-110

Authors: Oana Secasiu, Vlad Posea , Stefan Trausan-Matu

The current paper analyzes the main problems that we have when using online debate tools (forum, chat, video-cosnference). Then we propose a solution, based on Toulmin’s argumentation theory, that we believe it will improve the way these debates take place. The application that we have developed helps both the regular user and the moderator to construct a better structure of the conversation. This will allow users to track the ideas that have been changed and the evolution of the arguments that have been presented. Also, a debate that is structured using this tool will be much easier to understand by a user that hasn’t followed it from the beginning. All the steps of the debate: its data, conclusion and backing are available in a very easy to understand format. In order to achieve that we use advanced visualization tools. The paper also presents a pedagogical scenario where our tool can be successfully used. The paper presents the theory on which the application is based, the architecture of the application, the description of the way the application it is used, a pedagogical scenario and it ends with some conclusions and a short presentation of the future developments.

133-144

Authors: Maria-Elena Osiceanu, Silviu Ghioc

IT&C has a great impact on building social relations, becoming a research area in full development. Advances in technologies had allowed the development of new services, systems, products and applications for persons with disability. Since the development of technological systems can be considered an essential component of everyday life, a particular interest should be given to the role which it has in growth of personal autonomy. In the case of persons with disabilities, computers can be accessed more easily through the design of special software, suitable for a family as large users. Adaptated Information Technology (ATI) allows people with disabilities to use a computer reducing or removing obstacles arising from common interface for users. ATI facilitates access to information resources through an offsetting deficiency. The goal of ATI applications is to come to the aid of people with disabilities whose job involves using a computer, and to support their integration into the labour market, by providing a technological support. The purpose of this article is to show the importance of technologies/ devices for persons with disabilities, for the purpose of their integration into society.

163-186

Authors: Mihaela Ordean, Dorian Gorgan

The paper refers to a particular domain of authorization and proposes the SCAR-ACE model for role based access control in e-Commerce applications. Nowadays, there are an increasing number of Web applications that require authorization decisions. These applications include (but not limited to), e-Commerce applications, management and sharing of distributed resources, execution of downloaded code, etc. Authorizing these kinds of applications is significantly different of that of centralized systems and even of that of relatively small distributed systems. E-Commerce applications become increasingly more complex, requiring access to heterogeneous resources of users in different roles. Access control in e-Commerce applications is an important subject of nowadays scientific research. The current work proposes a safe model for role based access control without using cookies. The proposed model allows the access to system resources only for authorized users. In order to determine the flow and to control the access to the resources in a distributed application, is introduced the notion of role as an intermediary between a user and its permissions. Each role has attached a set of permissions (or privileges) to access the resources and operations. The model is validated by a set of tests and by experimental results.