Dalia Baziuke

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Andreas Tsatsaris

University of West Attica / Πανεπιστήμιο Δυτικής Αττικής

Grigoris Grigorakakis

Hellenic Ministry of Culture & Sports

Tei Kavalas

Aristotle University of Thessaloniki

Konstantinos Kyriakos

University of Patras

Marios Rousos

Natasha Merkouri

National & Kapodistrian University of Athens

Ιωάννης Σόλαρης

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Papers by Dalia Baziuke

Variations on Agent-Oriented Programming

Computational science and techniques, Dec 28, 2017

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Dirbtinis intelektas edukacijoje: integravimo galimybių teorinė analizė

Regional Formation and Development Studies

Dirbtinis intelektas vis labiau skverbiasi į mokyklas ir edukacijos procesą. Tad svarbu nustatyti... more Dirbtinis intelektas vis labiau skverbiasi į mokyklas ir edukacijos procesą. Tad svarbu nustatyti, kaip jis gali padėti tobulinti mokymo(si) procesą. Šiame straipsnyje apžvelgiamos ir sisteminamos šiuolaikinės dirbtiniu intelektu paremtos edukacinės technologijos, atskleidžiant jų galimus privalumus ir trūkumus, kuriant personalizuotas mokymo(si) aplinkas. Siekiant išsikelto tikslo, taikytas mokslinės literatūros analizės metodas. Jo pagrindu skiriamos pagrindinės dirbtinio intelekto integravimo į edukacines technologijas tendencijos, jos išsamiai aptariamos. Teigiama, kad įvertinus dirbtinio intelekto privalumus ir galimybes edukacijoje, jis turėtų būti vertinamas kaip edukacijos praktiką transformuojantis procesas, kur būtina iš esmės persvarstyti pagrindinius vaidmenis. Svarbiausias efektyvaus dirbtinio intelekto naudojimo edukacijoje veiksnys – mokytojų raštingumas dirbtinio intelekto srityje.

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Can visitors visually distinguish successive coastal landscapes? A case study from the Curonian Spit (Lithuania)

Ocean & Coastal Management, 2016

Visual distinctiveness of the series of successive coastal landscapes featuring the Curonian Spit... more Visual distinctiveness of the series of successive coastal landscapes featuring the Curonian Spit, a UNESCO World Heritage site, has been investigated using black and white landscape photos as visual stimuli. Based on the results of the chi-square test it was confirmed with strong statistical evidence that lay visitors indeed are capable of visual distinguishing different coastal landscapes and habitats which occur in the succession series from the shifting dunes to the mature forest. In all investigated 45 different cases of coastal landscapes the 'null hypothesis' was rejected with p < 0.00001. If the photographs representing the landscapes are carefully selected by a dedicated group of professionals, then lay visitors can correctly distinguish the landscapes and/or habitats even in the case when black and white photographs are applied as visual stimuli.

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Informacinės technologijos istoriniuose tyrimuose: istorinių kapinių atvejis

Integration of ICT, Drama, and Language for Development of Children's Communicative Competence: Case Study in a Primary School

Informatics in Education, 2009

The paper addresses the issue of unusual ICT tool application in the development of communicative... more The paper addresses the issue of unusual ICT tool application in the development of communicative competences during drama classes. It also presents the practical implementation of a case study method with the application of ICT tools. The case method was used for an interesting combination of acquiring communicative competences including drama skills by means of applying modern computer software. The target group was the 3rd form pupils of Klaipėda primary school. The activities planned to cover skills of language, drama and ICT. The significance of the presented case is based on the following: pupils' communicative skills are improved; learning is based on the integration of inherently different subjects, such as drama, language and ICT; skills of the three subjects are educated in a creative way. ICT can act as a promoter of educational change only if learners and teachers have an access to the new technology and it is intensively used as a tool for learning in various subject domains.

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The distribution of carbon stable isotopes as an indicator of temporal and spatial dynamic and distribution of autochtonic and allochtonic organic matter in a shallow estuarine lagoon

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Methods to Enhance Capabilities of a Virtual Learning Environment

Making virtual learning environment more intelligent: an application of Markov decision process

Suppose that there exist a Virtual Learning Environment in which agent plays a role of the teache... more Suppose that there exist a Virtual Learning Environment in which agent plays a role of the teacher. With time it moves to different states and makes decisions on which action to choose for moving from current state to the next state. Some actions taken are better than some others. The transition process through the set of states ends in some final (goal) state, being in which it gives for the agent the largest benefit. The best way of action is to reach the goal state with maximum return available. The system is formalized as Markov Decision Process and the Q-Learning algorithm is applied to find of such kind criterion that optimises the behaviour of an agent.

Cluster quality assessment by the modified Renyi-ClipX algorithm

This paper presents the modified Renyi-CLIPx clustering algorithm and shows that with this algori... more This paper presents the modified Renyi-CLIPx clustering algorithm and shows that with this algorithm more accurate groupings can be obtained, it gives higher accuracy rates as well. The combination of Renyi entropy based clustering and CLIP3, CLIP4 rule derivation algorithms is used to discover clusters and create rules to explain them. The algorithm itself contains refinements that are used while improving the goodness of obtained clusters and rules. Results on researching the influence of data discretization and so called negative examples data set to the rule complexity and cluster quality are presented as well.

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Approach to an Adaptive and Intelligent Learning Environment

This paper proposes a model of the componentfor a virtual learning environment (VLE), which enric... more This paper proposes a model of the componentfor a virtual learning environment (VLE), which enriches it with some adaptive and intelligent features. Such a model explains how the VLE as a system should direct its actions towards the maintenance of learner needs in selecting, studying and controlling the study topics and evaluating the obtained knowledge. The adaptivity is supposed to be understood such as the system’s ability to form and, during the learning process, uniformly update curriculum that satisfies the needs of the learner, and intelligence is expressed by the ability to initiate actions and, referring to the learning process, perform decision making. The implantation of such a component into a VLE enriches the spectrum of the student’s own abilities to purposefully, without the extra help of a tutor, seek some level of acquisition.

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The Use of Innovative Study Methods and Ict in the Study Process: The Attitudes of Lecturers and Students

The results of the research, carried out at the University, are presented in the article. They he... more The results of the research, carried out at the University, are presented in the article. They helped to clarify the attitude of lecturers and students towards the usage peculiarities of information and communication technologies in the study process. The following elements of study process were being analyzed: competencies, gained during the studies, application of learning methods, assessment methods of learning and achievements. The research revealed that the use of innovative methods and information and communication technologies in the study process are not sufficient. In order to achieve the quality in education, it is sufficient to develop lecturers' capacities to use information technologies, to encourage students to use the virtual learning environment. The research was accomplished using the Tuning methodology, a questionnaire survey and interview methods. 259 respondents participated in the research.

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Developing a system for mapping sensitive marine areas

2014 IEEE/OES Baltic International Symposium (BALTIC), 2014

Natural values of marine ecosystems often overlap with human activities. In order to reduce or ev... more Natural values of marine ecosystems often overlap with human activities. In order to reduce or even eliminate conflicts arising a considerable amount of information is needed: identification of marine activities, their location and scale, as well as the environment's response to separate pressures or different sets of impacts. Furthermore, the value itself can be estimated differently, since valuation assessments range from the anthropocentric to bio-centric point of view. In this study, the concept of a system for mapping the most sensitive marine areas in the Lithuanian marine area is introduced. It is based on the sensitivity assessment numerical scales of species and biotopes. It is being integrated into the geospatial database. Integration of such information into a GISbased multi-criteria evaluation system can generate sensitivity maps of benthic habitats. These maps can provide important information on the most threatened to anthropogenic pressures marine areas. The system could also serve as a tool for marine spatial planning and providing a good background for decision making, i.e. the placement of activities in the least sensitive areas.

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Research and Management of Transitional Waters special issue

CISOCUR-Hydrodynamic circulation in the Curonian Lagoon inferred through stable isotope measurements and numerical modelling

ABSTRACT The spatial pattern of the hydrodynamic circulation of the Curonian lagoon, the largest ... more ABSTRACT The spatial pattern of the hydrodynamic circulation of the Curonian lagoon, the largest European coastal lagoon, is still little understood. In absence of automatic current registration data all the existing models relied mostly on such data as water levels leaving high level of uncertainty. Here we present CISOCUR, a new project financed by the European Social Fund under the Global Grant measure. The project applies a new methodology that uses the carbon stable isotope (SI) ratio of C12 and C13 that characterize different water sources entering the lagoon and may be altered by internal kinetic processes. Through the tracing of these isotope ratios different water masses can be identified. This gives the possibility to validate several hypotheses of water circulation and validate hydrodynamic models. In particular it will be possible to 1) trace water masses entering the lagoon through the Nemunas and the Klaipeda strait; 2) test the hypothesis of sediment transport mechanisms inside the lagoon; 3) evaluate the importance of physical forcing on the lagoon circulation. The use of a hydrodynamic finite element model, coupled with the SI method, will allow for a realistic description of the transport processes inside the Curonian lagoon. So the main research goal is to apply the stable isotope tracers and a finite element model to determine the circulation patterns in the Curonian lagoon. Overall, the project will develop according to 4 main phases: 1) A pilot study to measure the isotope composition of different carbon compounds (dissolved and suspended) in different water bodies that feed water into the central lagoon. Through this pilot study the optimal study sites for the seasonal campaign will be identified as well. 2) Seasonal field campaigns in the monitoring stations identified in phase 1 to measure the carbon isotope ratio. 3) Development of a model that describes the kinetics of carbon isotopes and its transformation. 4) Application of a hydrodynamic model that includes the kinetic model and uses the data in order to describe the overall circulation patterns in the Curonian lagoon. Project activities will be carried out as common co-ordinated effort of field an SI group and the modeling group that will have to calibrate the hydrodynamic model. In this way the expertise of different groups (physicists and oceanographers) will result in added value, providing the best available expertise along the eastern coast of the Baltic.

Information Technologies in History Research: The Case Of Historical Cemeteries

Acta Historica Universitatis Klaipedensis, 2014

Modern information technologies (IT) provide progressive tools and methods for data collection, s... more Modern information technologies (IT) provide progressive tools and methods for data collection, storage, processing, and publication. The essence of historical research is to synthesize new information from different types of historical sources. The analysis of scientific publications proved that IT are still rarely applied to historical research. Several reasons may account for the state of things. One of them is related to rather conservative attitudes of researchers in the field of IT towards collaboration, which also accounts for the absence of specialized software for historical research. The article introduces IT tools and methods which can be used in historical research in a popular way, and the authors expect to promote inter-disciplinarity in the field of history.

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Investigation of Q-Learning in the Context of a Virtual Learning Environment

We investigate the possibility to apply a known machine learning algorithm of Q-learning in the d... more We investigate the possibility to apply a known machine learning algorithm of Q-learning in the domain of a Virtual Learning Environment (VLE). It is important in this problem domain to have algorithms that learn their optimal values in a rather short time expressed in terms of the iteration number. The problem domain is a VLE in which an agent plays

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Probabilistic Argumentation Systems with Decision Variables

Informatica (lithuanian Academy of Sciences) - INFORMATICALT, 2005

The general concept of probabilistic argumentation systems PAS is restricted to the two types of ... more The general concept of probabilistic argumentation systems PAS is restricted to the two types of variables: assumptions, which model the uncertain part of the knowledge, and proposi- tions, which model the rest of the information. Here, we introduce a third kind into PAS: so-called decision variables. This new kind allows to describe the decisions a user can make to react on some state of the system. Such a decision allows then possibly to reach a certain goal state of the sys- tem. Further, we present an algorithm, which exploits the special structure of PAS with decision variables. *

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The Use of Natural Sorbents for Spilled Crude Oil and Diesel Cleanup from the Water Surface

Water, Air, & Soil Pollution, 2014

Oil spills impose serious damage to the environment. A spilled crude oil or its products affect a... more Oil spills impose serious damage to the environment. A spilled crude oil or its products affect aquatic flora and fauna and influence the atmosphere as well. Such pollutants are especially dangerous for the water ecosystems, where biological self-purification processes are slower (for example the Baltic Sea), than in warmer regions. In this paper, we evaluate a sorption capacity of ecologically friendly natural sorbents, when the crude oil and diesel are spilled on the surface of water. The experiments are carried out in the laboratory, and the water from the Lithuanian Baltic Sea coastline and Curonian Lagoon is used. Moss, straw, wool, sawdust, and peat are the natural sorbents evaluated during the experiments. Chromatographic analysis of crude oil and diesel during the process of sorption was conducted as well. An experiment with some synthetic sorbents was carried out to compare the results with natural ones. The experiments showed that the most suitable material for crude oil or diesel fuel spilled on the water surface is peat. As well, Lagergren's model was adopted to the case of the sorption processes we have investigated. It can be exploited as a decision support tool while deciding the required time interval to achieve maximum sorption capacity of the sorbent in use.

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A Method for Rational Provision of Learning Syllabus

Informatics in Education-An International Journal, 2011

Distance, e-education supported by technological development have enhanced educational processes ... more Distance, e-education supported by technological development have enhanced educational processes by combining achievements from various scientific fields. This techno-educational enhancement has happened within the last decade. Virtual learning has grown in popularity as a new way of learning that gives preference to learn in convenient time and places, using specially prepared learning materials. The progression of technological developments implies the rise of user demands. It also aspires to look for flexible, but qualitative, training and learning ways. One of the outcomes is adaptive and intelligent learning environments that show to become a common tool used for virtual learning. This paper focuses on the key feature elements of adaptive learning environments (ALE), also researching about intelligent agents and their behaviour in ALEs. The method to provide individual learning syllabus according student knowledge in rational way is proposed. It is based on latent semantic indexing algorithm and is featured with an ability to update syllabus according individual learning outcomes of the student. This is yet another tool in a teacher's tool box. The description of results obtained during the exploration of proposed method is presented as well.

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Development of Children's Communicative Competence using Case Method of Technology

Technological Developments in Education …, 2010

... D. Baziukaitė is with Department of Computer Science, Klaipėda University, Herkaus Manto str.... more