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RoCHI Tables of Contents: 040506070809101112131415

Romanian National Conference of Human-Computer Interaction -- RoCHI 2008

Fullname:National Conference on Human-Computer Interaction -- RoCHI 2008
Editors:Sabin Corneliu Buraga; Ion Juvina
Location:Iasi, Romania
Dates:2008-Sep-18 to 2008-Sep-19
Standard No:hcibib: RoCHI08
Links:Conference Home Page | Online Proceedings | SIGCHI Romania Home Page
Model-Driven Engineering of User Interfaces: Promises, Successes, Failures, and Challenges BIBAKPDF 1-10
  Jean Vanderdonckt
Model-driven engineering (MDE) of user interfaces consists in describing a user interface and aspects involved in it (e.g., task, domain, context of use) in models from which a final interface is produced. With one big win in mind: when the user's requirements or the context of use change, the models change accordingly and so does the supporting user interface. Models and a method for developing user interfaces based on MDE are presented in this tutorial supporting forward engineering (a new interface is produced), reverse engineering (an existing interface is improved), and lateral engineering (an existing interface is adapted to a new context of use). Software supporting this method will be used based on UsiXML (User Interface eXtensible Markup Language), a XML-compliant user interface description language.
Keywords: domain model, model driven architecture, user interface model, user interface description language
Equality of Chances by Promoting the Accessibility in the Development of Interactive Systems BIBAKPDF 11-14
  Constantin-Gelu Apostol
The equality of rights and chances for all citizens is one of the most discussed and supported issues in the international public opinion. This issue has a special value also in projects started by the European Union. Particularly for interactive systems the challenge of ensuring the access represents a way to progress towards a real equality of chances for all people who live in unprivileged circumstances, especially for the ones with disabilities. Thus this article aims to investigate the social consequences of this movement depending on the type of disability, the impact of disability on the interaction of the persons in question and the European initiatives to promote the "electronic accessibility" (e-Accessibility).
Keywords: interactive systems, accessibility
Accessibility Evaluation of a Web Application for Visually Impaired People BIBAKPDF 15-18
  Cristina Simona Alecu
Currently the Internet is the most important source of information for more and more people. An important requirement is to ensure equal access to information for all citizens, including persons with special needs. The goal of ProInclusiv application is to inform the people with special needs (elderly and people with disabilities) on matters that may be of interest, and also the organizations, associations, health units etc. which provides services for such persons. The application promotes initiatives related to social, cultural and professional integration of people with special needs. To come to their aid, particularly to visually impaired people, at the design and implementation of the application has been taken into account the accessibility guidelines offered by WCAG (Web Content Accessibility Guidelines). The aim of the paper is to present how can be realize an accessible web application, using a tool for evaluation of the accessibility and usability during the development of this application.
Keywords: accessibility, visually impaired people, evaluation
Evaluation of the Usability and Pedagogical Effectiveness of an Augmented Reality Learning Scenario BIBAKPDF 19-24
  Costin Pribeanu; Dragos Daniel Iordache; Vincentas Lamanauskas; Rytis Vilkonis
Although several evaluation methods for e-learning interactive systems exist, few of them have been adapted for the evaluation of the pedagogical effectiveness and usability of augmented reality (AR) systems. In this paper we present and analyze the results obtained in the evaluation of a learning scenario for Biology that has been developed in the framework of the ARiSE (Augmented Reality for School Environments) research project. The scenario has been tested with users during a summer school that has been held in Bucharest, 2007.
Keywords: augmented reality, usability, e-learning
MovieRatings: Web 2.0 Usability BIBAKPDF 25-28
  Adrian Buzgar; Simona Lazarovici
The following paper presents the results of the MovieRatings (MOVR) project, a Rich Internet Application developed using the current generation of Web technologies, with an emphasis on Web 2.0 principles and usability aspects. The application was meant to provide cinephiles with an interactive environment for exchanging movie related information and rating the top movies in the database. We have used external web services from Flickr and YouTube, as well as the International Movie Database (IMDB) as data sources.
Keywords: web 2.0, user interface
Ontology-based Collaborative Applications BIBAKPDF 29-36
  Vlad Posea; Ovidiu Mara
This paper proposes a method to extend a collaborative application with semantic web technologies in order to provide advanced functionalities for searching and classification of messages based on the semantics of the terms identified in the messages exchanged by the user. The paper also describes a specific extension to a forum that offers an improved interface for defining semantic ontology based querying.
Keywords: ontology, forum, semantic web
Management of the Temporal Maps within a Collaborative Environment BIBAKPDF 37-40
  Cosmin Varlan
GPS are usually built by only one company that provides the software and the maps as a single solution. Because the maps are made especially for that kind of software and because the format is not made public, to update such a map additional files (from the producer) are needed. Even though, the producer is not always updating all the roads as fast as they appear or as fast as their properties are changing. This paper is proposing a new method of creating maps which provide the dynamism needed by every GPS: the maps are created by every driver, collected on the same website, parsed and modified and redistributed to the other users that are interested in vectorized maps. This way the maps are refreshed every day and that could be done even in real time.
Keywords: collaborative environment, GPS
An Improvement of KNN Performances in Web Recommender Systems BIBAKPDF 41-48
  Costin-Gabriel Chiru; Stefan Trausan-Matu; Traian Rebedea
his paper presents an approach that can lead to an improvement of the results of the collaborative filtering-based recommender systems. The recommendations given by this kind of systems are generated based on the users' preferences that have similar behavior to the one of the current user. In order to identify these users, a usual method is the automatic classification based on "the most similar K neighbors". The purpose of the paper is to discuss a method of presenting and correcting some of the problems of this algorithm, by applying an interpolation to the classes returned by the standard KNN algorithm, hence the method accuracy to be improved and, implicitly, the results returned by the recommender systems that uses it.
Keywords: Recommender systems, KNN, classification
Comparative Evaluation of Two Augmented Reality Learning Scenarios BIBAKPDF 49-52
  Alexandru Balog; Dragos Daniel Iordache; Costin Pribeanu
Augmented reality is featuring a new type of human-computer interaction that is based on the integration of the real and virtual within a single interaction space. More recently, these systems have been used to implement learning scenarios intended to support new teaching methods in secondary schools. This paper presents a comparative usability evaluation of two augmented reality learning scenarios. The evaluation is carried on the basis of the quantitative and qualitative measures provided by a usability questionnaire that is based on a technology acceptance model.
Keywords: augmented reality, e-learning, usability, technology acceptance
New Approaches in Automatic Usability Evaluation BIBAKPDF 53-56
  Adriana-Mihaela Guran; Daniela-Maria Onaca; Horia D. Pitariu
In this paper two new approaches in automatic usability evaluation are described. These approaches use modern programming techniques as Aspect Oriented Programming and Agent Based Programming in order to identify usability problems.
Keywords: usability, aspect-oriented programming, user centred design
Interactive Augmented Reality-based Access Point BIBAKPDF 57-60
  Mihai Polceanu; Dorin-Mircea Popovici
We introduce BIIBAR system, an interactive augmented reality (AR) based access point. After a brief presentation of the Augmented Reality Toolkit API, and its theoretical background, the possible solutions are discussed. The selected solution is then presented from both the perspectives of its facilities and future developments.
Keywords: augmented reality, interactive systems
Java Solutions for Real Time Vocal Signal Transmission using the UDP Protocol BIBAKPDF 61-64
  Titus Felix Furtuna; Marian Dardala
Java technologies cover at this moment all aspects concerning software developing. This paper proposes a software solution for real time vocal signal transmission using Java technologies. The proposed solution can be an alternative way for directly, simply and useful communication for people with visual disabilities. It is able to supply, in particular circumstances, more sophisticated and expensive technologies; for instance vocal synthesis. The paper contains a theoretical part that presents used Java technologies (Java Sound Application Programming Interface) and network programming aspects using the UDP protocol -- and an applicative part that presents the elements of proposal software solution -- the application architecture and significant sequences of source code.
Keywords: multimedia, UDP protocol
DAISY -- Digital Audio Books Accessible for Persons with Visual Impairment and with Reading Difficulties BIBAKPDF 65-68
  Marian Padure
Synchronizing the text and audio files according to the DAISY standards, allows visually impaired persons to read a scientific book in similar conditions as a person with no disability. In this paper, we present the DAISY standard and the advantages of using it for visually impaired persons.
Keywords: accessibility, digital audio books, visual impairment
Distributed Multimedia System for Human Computer Interaction BIBAKPDF 69-72
  Adriana Reveiu
The aim of the paper is to provide some software components developed for acquisition, controlling and management of multimedia streams, of multimedia devices and for human computer interaction. Implemented software components are integrated in a multimedia system that allows the unitary management of multimedia data, solution which cover the whole channel of multimedia services distribution: from the multimedia content acquisition to the transmission, processing, data warehouse and until the usage in various forms by the final users. The technology used for software components development is the component based .NET technology. This is an appropriate technology for distributed systems development and for components reusing in Web and Windows applications.
Keywords: multimedia, multimedia streams
Ignoring Irrelevant Information on Displays BIBAKPDF 73-76
  Ion Juvina
This paper presents empirical and modeling work aiming to contribute toward a coherent theory of how humans select relevant information and discharge irrelevant information presented on displays. Two empirical studies are presented. The first study investigated how previously attended information is prevented from interfering with currently processed information. A theoretical account together with two different implementations of this account are put forward in order to explain the empirical data. A second study was designed in order to disentangle between these two implementations. The second study generated new questions and hypotheses regarding the balance between automatic and controlled discharge of irrelevant information.
Keywords: attention, cognitive control, cognitive inhibition
Visual Communication through Infographics BIBAKPDF 77-80
  Ecaterina Valica
Interaction techniques and visual representations allow users to view, explore and understand large amounts of information. The research made in Information Visualization area has focused on finding ways to render the abstract information in an more intuitive way. Infographics allows you to filter the information, establish relations between its components, find patterns and represent them in a manner that allows the consumer to assimilate knowledge in a faster and easier way. As infographics enter the on-line environment, the line between infography and software begins to blur. The ease of interpretation of information within an infographic is based on the fact that it uses a universal visual language. Lately we can use various tools for automatic representation and visualization of data. These tools facilitate the creation and distribution of infographics and make the transition from presentational to interactive graphics.
Keywords: information visualization, infographics
A User Centered Approach in Designing a Career Decision Making Assistant BIBAKPDF 81-84
  Daniela-Maria Onaca; Adriana-Mihaela Guran
The present paper analyses the results of a user need research during the development of an intelligent assistant to support decisions in choosing the specialty in higher education. Our research was composed of multiple research projects focused on different categories of possible users. The methodology was mostly qualitative. The results allowed us to reach a model of the decisional process as well as to identify the main difficulties and opportunities during this process. The identified opportunities were then associated with proposals regarding the form and functionalities that should be imbedded in an intelligent decision support system.
Keywords: software assistant, task analysis, user centred design
News Web Portal based on Natural Language Processing BIBAKPDF 85-92
  Traian Rebedea; Costin-Gabriel Chiru; Stefan Trausan-Matu
The paper presents an autonomous text classification module for a news web portal for the Romanian language. Statistical natural language processing techniques are combined in order to achieve a completely autonomous functionality of the portal. The news items are automatically collected from a large number of news sources using web syndication. Afterward, machine-learning techniques are used for achieving an automatic classification of the news stream. Firstly, the items are clustered using an agglomerative algorithm and the resulting groups correspond to the main news topics. Thus, more in-formation about each of the main topics is acquired from various news sources. Secondly, text classification algorithms are applied to automatically label each cluster of news items in a predetermined number of classes. More than a thou-sand news items were employed for both the training and the evaluation of the classifiers. The paper presents a complete comparison of the results obtained for each method.
Keywords: news portal, intelligent agents, natural language processing
A Microformats-based Tool for Personal Data Management BIBAKPDF 93-96
  Marius Butuc; Sabin-Corneliu Buraga
We found ourselves in a time when we experience a real blooming of the social side of the Web, by having more and more (apparently) separated entities communicate together. In order to be able to communicate easily and to be able to understand each other, we need standards that describe what we say, what we listen, what we store in our data. That is why the development of semantic markup doesn't only enrich the meaning for the humans, but also the meaning of the human-defined semantic for the machines. The purpose of this paper is to introduce a Web application -- Microwler -- that is capable of helping people enrich their social experience on the Web. Microwler enables the user to search and retrieve the personal data that anyone made available, regardless of the rest of the content. It also enables the user to visualize the connections that person has in his/hers XHTML Friends Network (XFN).
Keywords: microformats, information retrieval
The Analysis of Imaginary in Texts BIBAKPDF 97-104
  Lidia Trausan-Matu; Valentin-Andrei Canciu; Stefan Trausan-Matu
The paper presents an approach and an implemented system for analyzing the imaginary in texts. This problem is very important because its resolution allows the identification of connotations in texts, with major implications on textual interaction. The approach starts from the theory of imaginary introduced by the historian Lucian Boia. Natural language processing techniques are used. The results of analysis on several known books are presented and commented.
Keywords: natural language processing, wordnet
ASAP -- Advanced system for assessing participants in a chat environment BIBAKPDF 105-112
  Mihai Dascalu; Erol Valeriu Chioasca; Stefan Trausan-Matu
The paper proposes a method for assessment and identification of the most competent participant in a chat collaborative environment. The article also describes implemented software systems that facilitate the visualization of test results. Natural Language Processing and Social network Analysis methods are used. The programs help both teachers and students in improving their learning and assessment methods by providing personalized feedback based on the chat taken into consideration.
Keywords: Chat, polyphony, assessment, annotation, social networks, semantic web
Social and Affective Presence in Online Communication BIBAKPDF 113-116
  Ana Maria Marhan
New communication technologies demand users to creatively adjust emotion expression strategies to the constrains of a new environment. The paper provides a brief analysis of the most frequent emotion representation modalities users employ in various text-based communication environments (like chat, email, SMS, discussion forums, etc.), as well as the main cues they rely on in order to interpret the emotional state of persons they are engaging in a computer mediated interaction.
Keywords: communication, social presence, emotion
Online Communities: Approaches, Principles, Dilemmas BIBAKPDF 117-120
  Irina Cristescu
Online communities mediated by computer facilitate the gathering and the group interaction throughout social support, information and the feeling of belonging. The social interaction areas created by technologies that allow users to interact with other groups assure the consolidation of social networks. The design and the development of interactive systems should be concerned with two important aspects: usability and sociability. When the group interest is in contradiction with the personal interest a new tension is created, a tension whose negative effects can not be neglected due to their implications on the group level. In the present article we analyze the design principles of online communities on grounds concerning the usability and sociability requests.
Keywords: online communities, sociability, usability
Using Web Services from Mobile Devices. Software Application for Academic Environment BIBAKPDF 121-124
  Emil Stanescu; Ileana Stanescu; Razvan Zota; Laura Stanescu
In our paper we depict two modes of accessing Web services from mobile devices. These modalities correspond to different types of mobile devices, and, as a consequence, we use adapted client modules for each type. The software application depicted in our paper represents an easy way for informing of the members of an academic environment. It offers the possibility of an easy adaptation of user interface, so as to access the information faster, in concordance with user profile and his context. The architecture of this information system includes a common support at data level and at application level, on the server, but, at the client level, we developed distinct software components: for PocketPC mobile devices, which use Microsoft .NET Compact Edition, and, on the other part, for mobile phones incorporating Java 2 Platform Micro Edition.
Keywords: mobile devices, web services
Approaches on the Quality Evaluation of the On-line Public Services (e-ServEval) BIBAKPDF 125-128
  Alexandru Balog
This paper describes two categories of approach (general and specific) regarding the quality evaluation of the on-line public services. The specific approach presents the e-ServEval model, designed and experimented in a national research project. The model takes into consideration characteristics regarding the quality of the interface, the quality of the interaction and of the result (outcome). The model is validated in relation to external factors (the user's satisfaction and the intention of using the service).
Keywords: online public services, quality evaluation
Hedonic and pragmatic attributes in determining the mobile phone user experience BIBAKPDF 129-132
  Daniela-Maria Onaca; Andreia Daniela Muresan; Horia D. Pitariu
The present research represents an integrative approach of the user experience notion having the Hassenzahl model (2003) as a starting point. The integrative dimensions of our model are represented by: product characteristics, pragmatic attributes (ease of use, usability), hedonic attributes (stimulation, identification, evocation), consequences (satisfaction, pleasure and visual attraction) and the context of use (action vs. goal mode). This model is empirically tested in the field of mobile technology, more specifically in the field of mobile phone use. Our results indicate that all the aspects of the experience contribute significantly to the overall satisfaction of the mobile phone user, the pragmatic and hedonic attributes not being perceived as two different elements. Perceived user satisfaction is seen as a mediator between usability and visual attraction. Both pragmatic and hedonic attributes influences significantly satisfaction and visual attraction and the differences regarding the user experience are significantly influenced by context.
Keywords: user experience, hedonic attributes, usability, mobile phones
Collaboration in E-learning Environments -- Psychological Aspects and Current Technologies BIBAKPDF 133-138
  Alexandru D. Iordan
This review synthesizes the main theoretical and applicative approaches regarding collaboration in current e-learning environments. The paper sets off from the psychological and educational foundations of collaborative learning, on the one hand, and from the current level of Web technology, on the other hand. The concepts, premises and typology of the approaches that support computer mediated collaborative learning are treated next. Finally, the main technologies and applications that implement collaborative e-learning are presented.
Keywords: e-learning, collaborative learning
Increasing Efficiency of the Didactic Computer Games through Processing Information on Action, Iconic and Verbal Level BIBAKPDF 139-142
  Verginia Cretu
The author prove that the advantages of computer games are increased if they are part of didactic system based on processing information at action, iconic and verbal level. Didactic game could reproduce trustily the reality elements at which students do not have direct access, but also an inherent directed activity, loved by those, with small steps and many feedbacks; could become complementary to all three plans, gives an action model for discover complex relationships from nature; starts cognition activity and mental image creation which extends outside activity. The most important arguments are given by research made in primary school (pupils 7-11 years old with mental impairment) which proved that, training the same thinking micro operations, at direct action level in nature, with things and creatures, than through images (which permit to detach stable patterns for selective reflection of essential) and then at verbal level, contributes to increase formative efficiency of the teaching-learning process.
Keywords: educational computer games
Graphics Annotation Techniques in E-learning BIBAKPDF 143-146
  Teodor Stefanut; Dorian Gorgan
This paper presents the experiments on the user interaction techniques based on the 2D and 3D graphics annotation, developed in eTrace eLearning Environment. The 2D annotation technique does not depend on the type of the 2D documents and 3D objects. The user has the ability to make 3D annotations by drawing directly on the surface of the 3D objects. eTrace has been developed and experimented the annotation techniques in the context of lessons from different domains such as mechanics, physics, and aeronautics.
Keywords: graphical annotation, e-learning