HCI Bibliography Home | HCI Conferences | RoCHI Archive | Detailed Records | RefWorks | EndNote | Hide Abstracts
RoCHI Tables of Contents: 040506070809101112131415

Romanian National Conference of Human-Computer Interaction -- RoCHI 2013

Fullname:National Conference on Human-Computer Interaction -- RoCHI 2013
Editors:Teodor Stefanut; Cristian Rusu
Location:Cluj-Napoca, Romania
Dates:2013-Sep-02 to 2013-Sep-03
Publisher:MatrixRom Publishing House
Standard No:ISSN 1843-4460; hcibib: RoCHI13
Papers:36
Pages:191
Links:Conference Home Page | SIGCHI Romania Home Page | Online Proceedings
  1. Invited talk
  2. E-Learning Systems
  3. Social Communication Aspects
  4. Accessibility and Usability, Multimodal Interface
  5. Aplicatii, interfete web si interfete multimodale
  6. HCI research activities at Tallinn University
  7. Flexible Communication Human Agents -- Software Agents

Invited talk

Intelligibility Required: How to Make Us Look Smart Again BIBAKPDF 1-8
  Jo Vermeulen; Kris Luyten; Karin Coninx
Users often become frustrated when they are unable to understand and control a ubicomp environment. Previous work has suggested that ubicomp systems should be intelligible to allow users to understand how the system works and controllable to let users intervene when the system makes a mistake. In this paper, we identify several design considerations for supporting intelligibility and control in ubicomp environments. We show these considerations are also applicable and necessary beyond ubicomp. We position examples of existing solutions in the design space that is obtained from combining these dimensions and show how it can be used to explore design alternatives for supporting intelligibility and control.
Keywords: intelligibility; control; end-user configuration; ubicomp; context; feedforward

E-Learning Systems

The Interactive Visual Modeling of Algorithms Through Metaphorical Forms BIBAKPDF 9-14
  Liviu Daniel Safta; Dorian Gorgan
This article describes a method for teaching computer programming, a method that involves the interactive visual modeling of algorithms and their evaluation, based on metaphorical forms. We briefly described similar approaches, having emphasized the improvements brought by the proposed method. We highlighted the sequence of states in the representation of an algorithm, providing a formal description for each state. Finally, we illustrated the theoretical elements presented in the paper through a case study.
Keywords: interactive visual modeling, metaphorical forms, teaching process, algorithmic thinking, programming language
Exploring Gender Differences in the Acceptance of E-Learning Technology BIBAKPDF 15-20
  Alexandru Balog
The UTAUT model developed by Venkatesh et. al. was tested in different domains and contexts of use. In the interpretation and comparison of results from different studies is necessary that scales for measuring of the UTAUT constructs to be robust and stable in different environments and contexts of use. It is therefore important to assess whether the model and the constructs are perceived in the same way by individuals in different groups. In this article is tested a reduced version of the UTAUT in the context of e-learning using data collected from 220 students (128 women, 92 men). In order to test model invariance and explore gender differences in the acceptance of technology is applied multi-group confirmatory factor analysis (MGCFA). The results show that the model and the constructs are invariant in the two groups of students in the context of e-learning in Romania.
Keywords: e-learning acceptance, UTAUT, gender differences, invariance measurement, MGCFA
User Interaction Techniques for Tracing 3D Graphical Annotations Placed on 3D Polygonal Surfaces BIBAKPDF 21-28
  Teodor Stefanut
The accelerated development of computer systems and graphical devices in the last few years has encouraged the inclusion of 3D graphical representations in a larger number of domains. As a result, an increasing number of users without technical background have to interact with these 3D scenes of objects as efficient, simple and natural as possible. In this article we will present an approach on adapting different users interaction techniques and metaphors from 2D space in order to allow user interaction in three-dimensional space through 3D graphical annotations places on 3D polygonal surfaces. The advantages of this approach as well as the challenges it generates will be discussed in detail.
Keywords: 3D annotation, user interaction techniques, 3D graphical annotation tracing challenges
How Does the Augmented Reality Help the Understanding of Chemistry: A Model Based on Causal Indicators BIBAKPDF 29-34
  Dragos Daniel Iordache; Costin Pribeanu
The educational applications based on augmented reality (AR -- Augmented Reality) provide an attractive and familiar interaction space. The goal of this paper is to estimate the contributions that the specific capabilities of an AR-based learning application have on the effectiveness of learning Chemistry in the general school. To this purpose, two models based on causal indicators were specified and tested. The results show that the interaction with colored balls symbolizing atoms placed onto a real periodic table, the simulation of chemical reactions and the augmentation of real objects are contributing to a faster understanding, a faster learning and a better understanding of the lesson.
Keywords: causal indicators, measuring model, augmented reality, perceived efficacy, e-learning
Perspectives in Using the Concentric Projection Model in Digital Manuals Design BIBAKPDF 35-38
  Loredana Manasia; Loredana Zaharescu
This article discusses problems met in the creation of digital manuals for secondary level of education and for high school, from the perspective of the concentric projection model. This model proposes a translation from the classical methods of developing interactive systems towards the efficient and authentic learning based on problem-solving approach, where the gradual and sequential task description defines the interaction between the user and the digital manual. In this context, the basic function of the digital manual (to just provide pedagogical information) is extended with a dynamic function that progressively guides the learning process towards the solving of problems with different levels of difficulty. The digital manual developed based on the concentric projection model provides to the user an adaptive content, customizable to his needs and expectations.
Keywords: design, task modelling, digital manual, instruction system

Social Communication Aspects

ReaderBench, an Integrated Platform for Textual Complexity Analysis and Reading Strategies BIBAKPDF 39-46
  Mihai Dascalu; Stefan Trausan-Matu; Philippe Dessus; Maryse Bianco; Aurélie Nardy
ReaderBench is an integrated platform that can be used for many different pedagogical purposes. It allows the trainers to evaluate a wide variety of textual creations from the trainees, offering flexibility and support for multiple languages. ReaderBench facilitates text evaluation by three main characteristics: cohesion between different text fragments, identification of reading strategies and evaluation of textual complexity. Each of these analysis dimensions have been validated through empirical experiments. ReaderBench covers a complete learning cycle: initial evaluation of teaching materials complexity, resources assignment to trainees, catching of the meta-cognitions reflected in textual verbalization and evaluation of understanding, encouraging the self-regulation process of the trainee.
Keywords: texts cohesion, reading strategies, textual complexity, Latent Semantic Analysis, Latent Dirichlet Allocation, Support Vector Machine
The Impact of Social Networking and E-mail on Human Behavior BIBAKPDF 47-50
  Andrew Laghos; Athina Skordi; Sophia Masoura
The purpose of this research was to examine the impact of social networking and social media on human behavior. In particular, we wanted to investigate the extent of the use of Greeklish (Greek Language written in Latin characters instead of the Greek alphabet) in our society today. Greeklish began when SMS services became available on mobile phones and the initial reasoning was that most of the phones came already setup in English, the Greek language option was not always available, and/or the switch between the languages took too many steps. In the approach followed, relevant literature was examined and a case study was carried out where results show a very high use of Greeklish when communicating online. The contribution of this paper to the HCI community is the presentation of a specific situation where social networking and social media have played their role in transforming how people communicate online.
Keywords: social networking, social media, internet communication, Greeklish.
Opinions Evolution in Forums Using a Semantic Summation Approach BIBAKPDF 51-56
  Dumitru Clementin Cercel; Stefan Trausan-Matu
The increase of the number of comments has become a problem for the consumers, who must read a significant part of them to identify the strengths and weaknesses of a product. Summation of the reviews is thus necessary to help consumers understand, in an easier way, a high number of opinions. A graph constitutes and adequate model that enables forum representation and an efficient way of following the opinions evolution regarding a specific entity. We will present in this article a visualization algorithm that enables the display of opinions evolution into a forum through a summation approach. We are not discussing the opinions evolution in time but an evolution of the graph's structure according to the opinions stored in each node.
Keywords: opinions evolution, word polarity, sentence polarity, opinions summation, Stanford Typed Dependencies
ReaderBench -- Analysis Based on Cohesion of the Implication and Collaboration of Participants in CSCL Conversations BIBAKPDF 57-64
  Mihai Dascalu; Stefan Trausan-Matu; Philippe Dessus
Even though most of the technologies that address Computer Supported Collaborative Learning have become more and more important in educational environments, there are only a few automated systems that allow the evaluation of participants' implication, collaboration or knowledge building, a central part of the long and complex process of conversations analysis between the trainees. The ReaderBench system implements an analysis model based on cohesion that integrates multiple techniques of natural language processing, a mechanism for evaluating the importance of user interventions and his collaborative activity, derived from the social based knowledge gathering that is reflected by the participants interventions through cohesion. Furthermore, by combining the global perspective over the conversation with a more detailed analysis centered on the participant, we are able to get a detailed evaluation of the chat type conversations, emphasizing the interaction and collaboration aspects between the participants. A preliminary study demonstrates that the automatic evaluation performed with ReaderBench returns very similar results with the ones obtained through tutors evaluation.
Keywords: computer supported collaborative learning, texts cohesion, dialogism, collaboration, Latent Semantic Analysis, Latent Dirichlet Allocation
Text Analysis Using Time Series BIBAKPDF 65-70
  Iulia Badea; Stefan Trausan-Matu
This article presents a text analysis application that performs the search and computation of different correlations between the rhythmicity of high frequency terms, using time series. The paper presents at the beginning some theoretical aspects of the model, including details about text pre-processing based on natural techniques for language processing, while in the second part are presented implementation details and some graphical results.
Keywords: natural language processing, texts mining, time series, rhythmicity detection
A Survey of the Usability Level of the UBB Admission Websites BIBAKPDF 71-74
  Adriana-Mihaela Guran; Grigoreta-Sofia Cojocar
We are describing in this article the usability evaluation performed on the admission websites of the faculties from the Babes-Bolyai University of Cluj-Napoca. The results presented have been obtained from a user centered research, performed with the main purpose of investigating the best approach on supporting the candidates to the higher education in choosing their profession and implementing the decision taken.
Keywords: usability, career, evaluation
Practical Experience in Developing a CAD Tool for 3D Solid Objects Deformation in Medicine and Architectural Domains BIBAKPDF 75-78
  Elena Ovreiu; Alina Sultana; Juan Gabriel Riveros Reyes; Leonardo Floréz-Valencia
In this article we will present a tool for 3D solid objects deformation. The proposed solution is based on Gauss function for computing the deformations. The user interaction is implemented through usual devices (e.g. mouse) or dedicated input devices (e.g. Wii-Nintendo Game Console). The deformation tool has been implemented into in integrated development environment specialized on the processing and visualization of medical images, more specifically on correcting the segmentation errors in medical images. This tool has also been integrated into an application specialized on architectural modeling to enable the deformation of solid models with quadrilateral surfaces.
Keywords: 3D models deformation, mouse based interaction in CAD environments, 3D modelling tools

Accessibility and Usability, Multimodal Interface

Graphical User Interface Optimization for Spatial Data Processing Applications BIBAKPDF 79-84
  Vasile Danut Mihon; Vlad Colceriu; Victor Bâcu; Teodor Stefanut; Dorian Gorgan
The new Earth Science research directions focus on developing GIS applications that integrate more and more computation and storage capabilities, providing this way a high user satisfaction degree. Achieving these features involves a graphical interface optimization and performant mechanisms that are able to hide from the user the complex implementation modules. The main optimization features proposed in this paper are related to: interactive development of spatial data processing use cases, visual layout of the scenarios, data management, interactive monitoring and visualization of the final outputs.
Keywords: optimization, graphical interface, usability, interactive methods, interaction techniques, spatial data
Examples of Using Graphical Interfaces for Off-Line Drawing and Measurement of Physical Quantities Recorded During Short Time Processes and Phenomena in Testing Laboratories BIBAKPDF 85-90
  Marinel Popescu; Ovidiu Mihaita
This paper shows how the measurements can be performed off-line, graphically, using physical quantities recorded during switching tests from testing laboratories. The short length in time of the test, the high speed of the phenomena, the limited capacity of the human observer senses and, sometimes, the impossibility to repeating the test recommends the recording of significant quantities behavior and their off-line analysis. Also, for the waveforms included in a Chart component plan is shown a simple way for marking the points necessary to determine the parameters by direct measurement or by computing using data from marked range. The paper is aimed at students from technical faculties with electric department, which achieved Pascal or Delphi applications and proposes a simple solution to develop their own applications where these simple examples presented can be integrated, adapted or developed.
Keywords: interface, display, off-line measurement, switching tests
Virtual Reality in Medicine -- Achievements, Challenges and Trends BIBAKPDF 91-95
  Oana Balan; Alin Moldoveanu; Florica Moldoveanu; Anca Morar
Virtual reality is an innovative technology with a high variety of potential benefits in many medical domains. The main purpose of virtual reality is to provide to human senses a simulated reality environment that is very similar with its natural correspondent. The advantages of using virtual environments in medicine are described to be revolutionary as well as very useful, both for doctors and patients. This paper describes the state of the art in virtual reality development, the technology used today for offering trusting and high quality services for patients, as well as ones of the most advanced applications in computer imagistic, telemedicine, medical education or surgery planning and training.
Keywords: virtual reality, virtual environment, simulation, medical education
Interaction Prototype in Augmented Reality Environments Based on Single Stroke Marker Recognizer BIBAKPDF 96-100
  Rares Bradi
This paper shows an interaction technique in augmented reality applications based on a single stroke recognition of the marker during a time frame. The proposed method uses ARToolkit for registration and tracking of the marker stroke, and one dollar algorithm for stroke recognition. The stroke the marker makes is recorded, resampled, rotated, scaled and translated and finally compared against a set of pre-stored templates. As a result a similarity score is obtained. This score is transformed into a confidence measure and based on a threshold the final recognition decision is made. An analysis of the proposed solution is carried out on a scenario with the purpose of highlighting recognition errors and the quality of the interaction.
Keywords: augmented reality, pattern matching, interaction technique
Human-Computer Interfaces Based on Augmented/Virtual Reality and Image Processing in Minimally Invasive Surgery BIBAKPDF 101-106
  Anca Morar; Alin Moldoveanu; Florica Moldoveanu; Victor Asavei; Lucian Petrescu; Oana Balan; Ionut Negoi; Sorin Hostiuc
Minimally invasive surgery has become a usual practice in the last decade. The main advantages of these procedures are the reduction or even elimination of the incisions. However, there are some limitations that must be considered. The lack of 3D visual and haptic feedback, the complexity of handling the surgical instruments and the difficulty in eye-hand coordination can cause accidents. Researchers from IT domain have developed a wide variety of surgery assistance tools for the pre-operatory and operatory phases of minimally invasive surgery. This article makes an analysis on the evolution of these assisting tools and on the human computer interaction techniques based on virtual/augmented reality and image processing, extracting common attributes, limitations and future development directions. There are also presented solutions for some of the identified challenges.
Keywords: image processing, augmented reality, virtual reality, minimum invasive surgery, medical imagistic

Aplicatii, interfete web si interfete multimodale

User Interaction with 3D Particle-Based Models BIBAKPDF 107-112
  Denisa Copândean; Adrian Sabou; Dorian Gorgan
In order to develop flexible, highly-interactive applications we must ensure interaction between the user and modeled objects. Particle-based modeling introduces specific challenges with regard to interaction in the virtual environment, requiring the development of particular interaction techniques in order to simulate the user's natural operations. This paper presents user interaction techniques with deformable particle-based models, namely selection, manipulation and volume slicing. We also describe the concepts and techniques that form the basis of these interactions, such as bounding volume and the implementation of the slicing instrument. Last but not least, we describe challenges occurring when ensuring interaction in a three-dimensional scene using bi-dimensional capable input devices.
Keywords: volumetric 3D objects, parallelism, blade, slicing
The Interaction with Mobile Devices Based on Head Movement Detection BIBAKPDF 113-120
  Serban Chiricescu; Alexandru-Corneliu Olteanu; Nicolae Tapus
The purpose of the research activity presented in this paper is the development of a solution for mobile systems that has the capability to interpret specific head movements. The proposed approach is an adaptive system that can capture and process images, transforming them in commands for the mobile device. The process phases of this solution are: images capturing from the front of the screen, human faces identification through multiple methods, tracking of faces movement and correspondent events generation for the mobile device. The main focus of the research is to minimize the necessary processing resources while maximizing the quality of the results.
Keywords: huma-computer interaction, mobile devices, gestures detection, head tracking
Framework for the Development of Strategy Games BIBAKPDF 121-128
  Constantin Ioan Nandra; Dorian Gorgan
The purpose of this article is to present and propose an architectural model which could lay the basis for the development of strategy games and, in general, of all kinds of applications that involve the simulation of interactions between a set of entities and some given environment. The model in question consists of a set of software components that define the architecture and several other sets of interchangeable components which can be used directly in the development of potential applications. This model could offer an alternative way of interaction to that based on the invocation of functionality, which is typical to using software libraries. This alternative way would offer to the user the ability to build applications as aggregates made from existing components. In this article, we will emphasize the strong points of this kind of design approach (flexibility, extensibility, modularity), and provide proof of the benefits derived from using it in the process of strategy game development.
Keywords: architectural model, modular development, reusable components, alternative interaction
Unitary Implementation of Interaction Techniques in Computer Games BIBAKPDF 129-132
  Timotei Dolean; Dorian Gorgan
In the last few years there have been different new computer-interaction devices: starting from those with touch till those like the Microsoft Kinect which interact with the help of the body's natural language. Besides this, the conventional devices like the mouse, keyboard or gamepad are still used in current applications. Thus, there is a problem of integrating the new devices with the already existing applications or the creation of new applications that use many of the existing devices. The developers are confronted with the need to implement separate logic for each of them, and it happens many times that those implementations are ad-hoc or re-implemented in each new project based on the requirements. The system we propose is one that aims at unifying and providing access to the input from different devices by means of a common shared layer.
Keywords: interaction devices, interaction methods, touch, Microsoft Kinect
Software System for the Automatic and Computer Aided Diagnosis of the Tumoral Affections, Based on Ultrasound Image BIBAKPDF 133-138
  Delia Mitrea; Sergiu Nedevschi
In the current work we describe a software system destined to the characterization, respectively to the automatic and computer aided diagnosis of the malignant tumors, based on ultrasound images. The purpose of this system and of our research is to offer an instrument for the non-invasive detection, through virtual biopsy, of the cancer, this being a very important disease nowadays. Ultrasonography is an inexpensive, not dangerous, repeatable examination method. Texture represents an important visual property of the real world objects and of the tissues within ultrasound images, able to reveal subtle aspects, which cannot be detected by the human eye. Thus, based on the information obtained from ultrasound images, we defined the imagistic textural model of the malignant tumors. Using the software system that implements the imagistic textural model, we obtained, after the experiments, accuracy higher than 90%, concerning the automatic diagnosis of the considered affections.
Keywords: automatic and computer assisted diagnosis, non-invasive characterization, ultrasound images, texture, virtual biopsy
3D Smith Chart Application BIBAKPDF 139-142
  Alin Moldoveanu; Andrei A. Muller; Victor Asavei
In this article we will present some of the graphical capabilities for information representation, editing and analysis that are available to the user through the "3D Smith Chart" software application. To the authors' knowledge, this is the first application that is capable of representing the electronic parameters of microwave circuits on the Riemann sphere.
Keywords: 3D Smith Chart, Riemann sphere, microwaves

HCI research activities at Tallinn University

Research and Studies in the Domain of Human-Computer Interaction at Tallinn University Institute of Informatics BIBAKPDF 143-144
  Katri Tammsaar; David Lamas
Tallinn University Institute of Informatics has developed specialist expertise in the area of human-computer interaction in recent years. An Interaction Design Laboratory was founded in 2009 which is leading various research projects, educational study programs and training courses in the field, as well as service provision for clients in private sector. The academic program for international students is conducted in English and is comprised of Masters in Human-Computer Interaction and Doctor of Information Society Technologies.
Keywords: research activities, overview
Towards a Situated Model of Sustainable Software Appropriation BIBAKPDF 145-148
  Arman Arakelyan; David Lamas
This paper describes HCI research conducted at Interaction Design Lab of Institute of Informatics, Tallinn University towards a situated model of sustainable software appropriation. The overall question of the proposed research is how to cater for software sustainability by designing for software appropriation? In this study we are interested to know if and how interaction design can ensure the sustainability of software solutions by introducing appropriation signifiers in them that allow users to adapt the software according to their needs. In the proposed model, users engage in appropriative behavior that allows the proposed software solutions to evolve through time while meeting the changing needs of the users. Our paper describes a study aimed at developing and validating this model situated in the public schools of Estonia.
Keywords: sustainable interaction design, software sustainability, interaction models, appropriation, appropriation support
Re-Conceptualizing the E-Textbook for Ubiquitous Interactions BIBAKPDF 149-150
  Ilya Shmorgun; David Lamas
The publishing industry is involved in an effort of converting school textbooks to electronic form, which often takes shape of static PDF documents. We propose to re-conceptualize the e-textbook as an aggregation of both professionally developed and user-contributed content, which is made available on a wide range of digital artifacts.
Keywords: E-textbook, ubiquitous interaction, artifact ecology
Developing mTLU: A Smartphone Application for Tallinn University BIBAKPDF 151-152
  Ilya Shmorgun; Cosmin Stirbu; Adrian Kaleta
We describe a project, which aims to support Tallinn University students and lecturers in their university-related activities, by providing access to course schedules and descriptions as well as campus navigation through an iPhone application.
Keywords: mobile devices, information systems, navigation
Visual Aesthetics of Interaction Design BIBAKPDF 153-158
  Mati Mõttus; David Lamas
There are no clear instructions for making nice looking visual design. Beauty depends on many aspects, starting with person who looks at the object and ending with style, accepted at present moment of time [4]. Absolute truth can not be revealed, but there exist some guidelines that are called composition rules [5]. Few talented people create masterpieces intuitively, but if others follow composition rules, the work will be done attractively as well. Visual aesthetics of interaction design influences both pragmatic and hedonic properties of interactive product. Relations between aesthetics and interaction design have been already well researched and proved, that aesthetic look of interface adds attractiveness, helps to engage users and will be positively remembered providing better User Experience (UX). This paper focuses on establishing connections between visual aesthetics of interface and its interactive features. The intention of study is to show that aesthetic interaction design does not only provide better UX but also increases its pragmatic properties e.g. usability.
Keywords: visual aesthetics, interaction design, aesthetics evaluation, user experience, user engagement, affordances, evaluation methods
Touch the Exchange: Bridging the Physical and the Digital Environments BIBAKPDF 159-160
  Alexandra Negoescu; Ilya Shmorgun
Bridging the physical and the digital environments is critical to the well functioning of many projects. This paper presents a description of the hardware and software technologies used within the Touch the Exchange project, as well as the reason why these specific implementation decisions have been made.
Keywords: interaction design, user experience, multi-touch, wrapper, kiosk

Flexible Communication Human Agents -- Software Agents

Semantic System for Electronic Contracts Monitoring BIBAKPDF 161-164
  Gabriela Visinari; Adrian Groza
This paper introduces a system for automating the contract management among business entities. The contract clauses are formalised in description Logic. The reasoning services of RacerPro are used to identify inconsistencies and to signal possible contract breach. The system exploits axioms in description logic to generate explanations regarding the breach of the contract. The collaborative platform for monitoring contracts is built on top of GoogleDocs.
Keywords: e-contracts, ontologies, dispute resolution, contract verification, contract monitoring, explanation google-docs
Using Natural Language for Interrogating LinkedData Collections BIBAKPDF 165-168
  Anca Marginean; Oana Marc
Even though Linked Data is a young concept, querying it renews old challenges of querying data in an easy yet enough expressive way. In the absence of a previous knowledge of the data model the most natural approach to facilitate access to data would be natural language. We rely on existing methods for natural language processing we introduce our first results towards translation of natural language queries to SPARQL. The translation relies on a mix between syntactic analysis structure patterns and ontologies.
Keywords: Semantic Web, Semantic parsing, SPARQL
Detecting Tourists Preferences for Recommending Personalized Visiting Hours BIBAKPDF 169-172
  Radu Razvan Slavescu; Adrian Coapsi
The article explores the possibility to estimate the time spent by a tourist in a specific touristic place and to compute a visiting schedule based on these estimations. With this purpose in mind a prototype has been implemented as an Android application created from multiple modules that work together. The first component registers the position of the user and the exact time of entering / leaving each touristic location. The second one estimates the necessary time for a complete visit based on the recommended visiting time for each objective and the time spent by the user in similar touristic places. A third component, specialized in problem solving, generates, based on the available information, a visiting schedule. We will discuss the efficiency and viability of the presented solution and different methods for improving performance.
Keywords: touristic planner, Android, constraints satisfaction problems
Monitoring the Process of Microfiber Production BIBAKPDF 173-176
  Sergiu Zaporojan; Igor Calmîcov; Constantin Plotnic; Viorel Carbune
Given the key role of the human operator in some technological systems, a cumbersome interface affects not only productivity, but also the value of the work itself. This paper describes an innovative application used to control the manufacturing process of the glass-coated microwires. The application provides a friendly interface "human operator-computer system". When developing this application methods and techniques of data acquisition and image processing were used. Besides, machine vision techniques were combined with intelligent ones to provide decision support.
Keywords: technological process, microwire, data acquisition, image processing, interface
Semi-Definite Relaxation for the Problem of Assembly Lines Equilibration BIBAKPDF 177-180
  Vasile Moraru; Sergiu Zaporojan
Decision support for optimal organization of an enterprise activity is based on certain mathematical models, including optimization. In this paper we consider the problem of assembly line balancing known in special literature as SALBP (Simple Assembly Line Balancing Problem). The mathematical model is a combinatorial optimization problem and belongs to the class of NP-hard. The problem considered is transformed into a quadratic programming problem, being further reformulated as a semidefinite program.
Keywords: modeling, SALBP, Boolean Programming, Semidefinite Relaxation
Multi-Agent System for Traffic Routing BIBAKPDF 181-184
  Adrian Popescu; Anca Marginean
We introduce a new system for traffic routing and management of smart vehicles movement in a town. The system deals with congestion with an approach based on agents that pursue their own goals whereas they also give feedback for a general goal -- a fluent traffic. Dynamic adaptation to unpredictable changes is facilitated through real time communication.
Keywords: Agents, distributed platform, congestion