Use of Hypertext in Information Science. Concepts, Systems, Models and applications [antikvár]

The dissertation consists of four chapters which are closely related to each other. In the first chapter of the dissertation a generál and abstract model of information systems is introduced and discussed in detail. The Muhi-Layer Architecture of Information Systems (MLAIS) model, invented by the author, describes information systems as complex structures built on four main layers and two additional layers. The layers are connected to each other by interfaces that carry out communications procedures to exchange information ("messages") between the layers. Each of the following three chapters of the dissertation discusses an important aspect of one of the layers of the MLAIS model (i.e. the T, LC, and H layers, respectively), which therefore serves as a generál framework of the issues discussed in the dissertation. In addition, the chapters add somé new approaches to the corresponding layers of the MLAIS model: • the second chapter of the dissertation examines the inner structure and coherence of natural language texts using co-reference analysis (the complex notation and terminology of which have been developed by János S. Petőfi [PETŐ97], [PETŐ98]). The second chapter applies, and completes the notation of co-reference analysis with somé new elements in order that it can serve as a metalanguage in further, and mainly computer-based, text linguistic or textological studies; • the third chapter of the dissertation explores a promising way of describing natural language texts in an artificial language (i.e. in PROLOG) piacing great emphasis on the coding and interpretation of (conceptual) metaphors and other figures of speech; • thtfourth chapter of the dissertation demonstrates the universality and applicability of the above considerations in the semantic interpretation of poetic texts using the "iceberg" representation of the MLAIS model as a cognitive framework. The "iceberg" model and its cognitive aspects has been developed and applied in the interpretation of literary texts together with Judit Porkoláb (see the publications [15], [17], [30], [32], [34], [35], [45], [51], [55], [67], [69], [71] in the 'Publications and presentations of the author' section). As regards methodological issues, each chapter follows a constructive way to elaborate its subject that is, the methods, considerations and conclusions applied are always demonstrated through examples from selected literary works. Note that each chapter (including the first chapter as well) contains originál, and new, results based on the following presentations and publications: 1. Károly I. Boda: Complex Data Structures and their Role in the Organisation of Information Systems. -Presentation in "Conference of PhD Students in Computer Science" (Institute of Informatics of József Attila University, Szeged, 18 July 1998.) (Chapter 1) 2. Boda I. Károly - B. Porkoláb Judit: Koreferenciális kifejezések és koreferenciarelációk. Példaszöveg: Szent János Apostol Jelenéseinek könyve. 21:9-23. Az új Jeruzsálem. (Részlet) = Officina Textologica 1998 évf. 2 szám, 32-56.1. (Chapter 2) 3. Boda I. Károly - Porkoláb Judit: A koreferencia kérdései a számítógépes szövegfeldolgozás szempontjából. = Officina Textologica 4 szám. Koreferáló elemek - koreferenciarelációk. Magyar nyelvű szövegek elemzése. Diszkusszió. - (szerk. Dobi Edit, Petőfi S. János) - Kossuth Egyetemi Kiadó, Debrecen, 2000. (Chapter 2) 4. Károly I. Boda - Judit Porkoláb: The Role of Conceptual Metaphors in the Hypertext Structure of Poetic Texts. = Annales Universitalis Scientiarum Budapestinensis de Rolando Eötvös Nominatae. Sectio Linguistica. Tomus XXIV. (Rcdigit I. Szalhmári.) - Univ. Budapestinensis de Eötvös Nom. Facult. Philosophiae, Budapest, (in publication) (Chapter 3)