Romanian Journal of Human - Computer Interaction Vol.5, No.3, 2012 ISSN 1843-4460
	Contents Applications for automatic transliteration between English and Romanian Tiberiu Boroş, Adrian Zafiu   1 - 14 POS tagger based on second-order HMM Dumitru-Clementin Cercel, Ştefan Trăuşan-Matu   15 - 34 Testing of a model based on UTAUT for the acceptance of e-learning systems. Alexandru Balog   35 - 58 Diagramatic description of distributed spatial data processing Vasile Dănuţ Mihon, Angela Minculescu, Vlad Colceriu, Dorian Gorgan   59 - 80 Controlling the applications running on a Windows system by means of Android devices Cristina Serban, Irina Grosu, Alexandra Siriţeanu, Alexandru Averescu, Adrian Iftene   81 - 96 Specific aspects regarding the usability of faculty admission websites Grigoreta-Sofia Cojocar, Adriana-Mihaela Guran 97 - 108   Abstracts Applications for automatic transliteration between English and Romanian Tiberiu Boroş1, Adrian Zafiu2 1Research Institute for Artificial Intelligence, Romanian Academy 13 September Street, no. 13, Bucharest, Romania E-mail: tibi@racai.ro 2University of Piteşti Târgul din Vale Street, no. 1., Piteşti, Romania E-mail:  adrian.zafiu@upit.ro Abstract. Transliteration has been previously introduced for translating proper names between languages, when the two languages are incompatible at the phonetic level and they use very different alphabets. We propose an data-driven method for transliteration from English to Romanian and we present a series of applications based on this task, such as text-to-speech synthesis (on multilingual text) and what we call “perception based search”. Keywords: transliteration, speech synthesis, maximum entropy. View full article   POS tagger based on second-order HMM Dumitru-Clementin  Cercel1, Stefan Trăuşan-Matu2,3 1Universitatea Politehnica Bucureşti Bd. Splaiul Independenţei, Nr. 313, 060042, Bucureşti E-mail: clementin..cercel@gmail.com 2Universitatea Politehnica Bucureşti Bd. Splaiul Independenţei, Nr. 313, 060042, Bucureşti E-mail: stefan.trausan@cs.pub.ro 3Institutul de Cercetări pentru Inteligenţă Artificială Calea 13 Septembrie, Nr. 13, 050711, Bucureşti Abstract. Part-of-speech tagging (POS tagging) is the process of grammatical labelling of each word in a sentence, phrase or paragraph with the corresponding part of speech. This process is a component of other modules of natural language processing and therefore the results should be as precise as possible. Once a part of speech has been identified, it provides supplementary information about the parts of speech that can appear in the same sentence. In the case of POS tagging, the ambiguities arise due to the fact that a word may have multiple morphological values depending on context. In this paper is performed, from an experimental perspective, an analysis of a POS Tagger based on a Second-Order Hidden Markov Model, using the Brown corpus. The tests have been conducted to obtain results according to various parameters. We will show how changes the accuracy of a POS tagger for English when become different, on the one hand, the training set size, and on the other hand, the domains of the original functions in comparison with the domain of the training set. We have identified the categories of texts from Brown corpus used for the training corpus when the accuracy of the POS tagger is higher, lower respectively. Keywords: NLP, POS Tagging, trigrams, HMM, Viterbi algorithm, the Brown Corpus. View full article   Testing of a model based on UTAUT for the acceptance of e-learning systems Alexandru Balog National Institute for Research and Devlopment in Informatics – ICI Bucharest Bd. Mareşal Averescu, Nr. 8-10, 011455, Bucureşti E-mail: alexb@ici.ro Abstract. The purpose of this study is to test a model of acceptance of e-learning based on UTAUT model developed by Venkatesh, Morris, Davis and Davis (2003). After a brief presentation of the UTAUT model and recent studies in the field of e-learning, are described the proposed model and the hypotheses, methods used and results obtained. By applying multivariate analysis methods on a sample of students (N = 224), the results show that the model is viable in the context of e-learning in Romania. The model explained 63% of variance of Intent to continue the use of e-learning. Keywords: e-learning acceptance, UTAUT, EFA, CFA. View full article   Diagramatic description of distributed spatial data processing Vasile Dănuţ Mihon, Angela Minculescu, Vlad Colceriu, Dorian Gorgan Universitatea Tehnică din Cluj-Napoca Str. Memorandumului, Nr. 28, 400114, Cluj-Napoca E-mail: {vasile.mihon, vlad.colceriu, dorian.gorgan}@cs.utcluj.ro, angela.minculescu@gmail.com Abstract. Most of the times, modeling and simulating natural phenomena involves a large number of operations, based on different compatibility constraints and rules. The solution proposed in this paper optimizes the entire description process through execution workflows. It offer the users special interaction techniques for workflow specification, automatic mechanism for syntactic validation of the described phenomena, hierarchical organization of the workflow, collaborative environment, reuse of resources, graphical modules customization. The proposed solution is intended to be used by both technical and non-technical users that do not have knowledge about the computational infrastructure. This paper describes the features implemented within the WorkflowEditor application that allows the interactive workflow development used in distributed processing of spatial data. Keywords: workflow, hypergraph, distributed processing, spatial data, use case, syntactic rules, collaborative environment. View full article   Controlling the applications running on a Windows system by means of Android devices Cristina Serban, Irina Grosu, Alexandra Siriţeanu, Alexandru Averescu, Adrian Iftene “Al. I. Cuza” University of Iaşi, Faculty of Computer Science 16, General Berthelot,  700483, Iasi E-mail: {cristina.serban, irina.grosu, alexandra.siriteanu, alexandru.averescu, adiftene} @info.uaic.ro Abstract: This article presents a client-server application that, enabling the user to remotely control with an Android component the applications running on the Microsoft Windows operating system. The system consists of two main modules: the client (the application running the user’s phone) and the server (the application running on the computer). Additionally, there are two means of communication between the two key components: Wi-Fi and Bluetooth. Tests we have done on this solution demonstrated the robustness of the application in use over a long period of time, stress testing and communication when there are objects between client and server. Keywords: Android, Windows services, remote control. View full article   Specific aspects regarding the usability of faculty admission websites Grigoreta-Sofia Cojocar, Adriana-Mihaela Guran Babeş-Bolyai University, Cluj-Napoca 1, M. Kogălniceanu Street,  400084, Cluj-Napoca E-mail: {grigo, adriana}@cs.ubbcluj.ro Abstract: Faculty admission websites are used every year by thousands of people looking for some kind of information. In this paper we present an empirical evaluation of Babeş-Bolyai University faculty admission websites. The university has 21 faculties, each one having its own website. The evaluation is performed using different criteria (i.e., the design, the displayed information, the language used, etc ) derived from usability heuristics. Keywords: website usability evaluation, university admission websites. View full article