Umeščanje modelov vodnih sistemov v navidezno okolje

Abstract

Keywords

Data

Language:	Slovenian
Year of publishing:	2008
Source:	Ljubljana
Typology:	2.08 - Doctoral Dissertation
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[L. Gosar]
UDC:	519.61/.64:556+626/628.1(043.3)
COBISS:	4303969
Views:	1902
Downloads:	465
Average score:	0 (0 votes)
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Secondary language:	English
Secondary title:	Water system models in virtual environment
Secondary abstract:	The water system elements can not be illustrated with spatial data with constant geometry. A three-dimensional abstraction, through which spatial data on water bodies can be examined, is composed of dynamic structures with complex geometry and topology. A three-dimensional visualisation of surfaces does not suffice to define the meaning of individual elements of space in which water bodies are included. Maps rules for water management contents have been drawn for decades. Due to the development of new information technologies for spatial data management and to possibilities of presentation (3D GIS and virtual reality), it is necessary to make a visual and material shift with placing water systems into information environments also as regards water management contents. The thesis deals with the principles of placing water system elements in virtual environment and presents the methods of defining the meaning of water system elements in three-dimensional environment. It defines the notion of a water system model and virtual environment as universal three- dimensional environment created with information technology which allows treatment of new dimensions of water systems (e.g. realistic presentation, time, etc.). Key definitions are derived from mathematical and physical models of water systems, since in virtual environment the data on water system situation and the results of modelling should be union in the same environment. Using the method of classifying waters systems by object types, elements of water phenomena are analysed in more detail in three-dimensional space, then an essential element of water phenomena is defined in virtual environment – water body. Water management facilities, installations, arrangements and legal systems are analysed as built environment with defined geometrical properties. The solutions are tested on practical examples in virtual environment of a part of the sea, river section and dynamics of gate elements. The thesis gives emphasis on the determination of contents of water system elements and not on the technological solution.
Secondary keywords:	water system;spatial data;virtual environment;water body;3D modelling;
URN:	http://www.dlib.si/?urn=URN:NBN:SI:doc-X8OBP9QK
File type:	application/pdf
Type (COBISS):	Dissertation
Thesis comment:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages:	XVII, 167 str, pril.
Type (ePrints):	thesis
Title (ePrints):	Water system models in virtual environment
Keywords (ePrints):	vodni sistem;prostorski podatki;navidezno okolje;vodno telo;3R modeliranje
Keywords (ePrints, secondary language):	water system;spatial data;virtual environment;water body;3D modelling
Abstract (ePrints):	Elemente vodnih sistemov ne moremo prikazovati s prostorskimi podatki, ki predstavljajo konstantno geometrijo. Trirazsežna abstrakcija, skozi katero lahko pregledujemo prostorske podatke o vodnih telesih, je sestavljena iz dinamičnih struktur s kompleksno geometrijo in topologijo. Trirazsežna upodobitev površin ne zadošča pomenskim opredelitvam posameznih elementov prostora, v katerega se vključujejo vodni sistemi. Pravila oblikovanja vodnogospodarskih vsebin na kartah so nastajala desetletja. Z razvojem novih informacijskih tehnologij upravljanja s prostorskimi podatki in zmožnostmi prikazovanja (3R GIS in navidezna resničnost) pa je treba tudi za vodnogospodarske vsebine izdelati vizualni in vsebinski preskok umeščanja vodnih sistemov v informacijska okolja. Doktorska disertacija obravnava načela umeščanja elementov vodnih sistemov v navideznem okolju in podaja načine pomenskega opredeljevanja elementov vodnih sistemov v trirazsežnem okolju. Opredeljen je pojem modela vodnega sistema in navideznega okolja, kot univerzalnega trirazsežnega okolja, izdelanega z informacijsko tehnologijo, ki omogoča obravnavo novih razsežnosti vodnih sistemov (npr. realistična upodobitev, čas, ipd.). Ključne opredelitve izhajajo iz matematičnih in fizičnih modelov vodnih sistemov, saj naj bi se v navideznem okolju podatki o stanju vodnih sistemov in rezultati modeliranja združevali v enotnem okolju. Z metodo razvrščanja vodnih sistemov po objektnih tipih so podrobneje analizirani elementi vodnih pojavov v trirazsežnem prostoru, nato pa opredeljen bistveni element vodnih pojavov v navideznem okolju – vodno telo. Vodnogospodarski objekti, naprave, ureditve in pravni režimi so analizirani kot grajeno okolje, pri katerem so geometrijske lastnosti določene. Rešitve so preizkušene na praktičnih primerih v navideznem okolju morja, rečnega območja in za dinamiko zaporničnih elementov. Poudarek v doktorski disertaciji je na določitvi vsebine elementov vodnih sistemov in ne na tehnološki rešitvi.
Abstract (ePrints, secondary language):	The water system elements can not be illustrated with spatial data with constant geometry. A three-dimensional abstraction, through which spatial data on water bodies can be examined, is composed of dynamic structures with complex geometry and topology. A three-dimensional visualisation of surfaces does not suffice to define the meaning of individual elements of space in which water bodies are included. Maps rules for water management contents have been drawn for decades. Due to the development of new information technologies for spatial data management and to possibilities of presentation (3D GIS and virtual reality), it is necessary to make a visual and material shift with placing water systems into information environments also as regards water management contents. The thesis deals with the principles of placing water system elements in virtual environment and presents the methods of defining the meaning of water system elements in three-dimensional environment. It defines the notion of a water system model and virtual environment as universal three- dimensional environment created with information technology which allows treatment of new dimensions of water systems (e.g. realistic presentation, time, etc.). Key definitions are derived from mathematical and physical models of water systems, since in virtual environment the data on water system situation and the results of modelling should be union in the same environment. Using the method of classifying waters systems by object types, elements of water phenomena are analysed in more detail in three-dimensional space, then an essential element of water phenomena is defined in virtual environment – water body. Water management facilities, installations, arrangements and legal systems are analysed as built environment with defined geometrical properties. The solutions are tested on practical examples in virtual environment of a part of the sea, river section and dynamics of gate elements. The thesis gives emphasis on the determination of contents of water system elements and not on the technological solution.
Keywords (ePrints, secondary language):	water system;spatial data;virtual environment;water body;3D modelling
ID:	8311037