89 research outputs found
Transport processes in fractured porous media
112 stranThis habilitation thesis summarizes author's theoretical work related to development of the
Flow123d simulator. This includes especially methods and algorithms for solving Darcy ow
problems in saturated and unsaturated fractured porous media.
A model with semi-discrete fractures called mixed dimension model is derived at the beginning. Then the abstract model for advection-di usion equation is applied to the Darcy ow.
The mixed-hybrid formulation of the Darcy ow mixed dimension problem is presented followed by its discretization using Raviart-Thomas nite elements. An analytical solution to a
test single fracture problem is supplied which allows veri cation of the model's implementation.
Finally, the BDDC method is applied to obtain a scalable solver of the linear systems arising
from the problem's discretization.
Subsequently, new developments for the non-conforming mixed meshes are presented. Four
methods with common strategy are used to introduce a coupling between equations living on the
intersecting nite element meshes of di erent dimension. Further a family of e cient algorithms
for computing mesh intersections is presented.
Final chapter is devoted to the Richards' equation and modi cation of the mixed-hybrid
scheme in order to satisfy discrete maximum principle. This is of particular importance for the
Richards' equation where short time steps are often necessary which leads to strong oscillations
for the schemes that violate DMP
Contact discontinuities in multi-dimensional isentropic euler equations
In this note we partially extend the recent nonuniqueness results on admissible weak solutions to the Riemann problem for the 2D compressible isentropic Euler equations. We prove non-uniqueness of admissible weak solutions that start from the Riemann initial data allowing a contact discontinuity to emerge
The Concept of a Thing in Czech and Swiss Civil Law
The Concept of a Thing in Czech and Swiss Civil Law This rigorous thesis deals with the concept of a thing in the legal sense. The central subject of the thesis is thus the term "thing" while the aim of the thesis is to compare the concept of a thing in the legal sense as compassed by Czech and Swiss civil law. Whereas Czech law considers beside tangible objects also intangible objects, i.e. rights and another things with no tangible substance to be a thing (so called broad concept of a thing), Swiss law considers solely tangible objects to be a thing in the legal sense (so called narrow concept of a thing). The thesis analysis both these concepts and then compares them, besides that it deals with some special objects of civil law, i.e. a living animal, controllable natural forces and securities including those in book-entry form. The thesis is divided into three chapters: the first chapter deals with the historical development of the term "thing" since Roman law. Besides all legislations that governed this legal term at the area of the contemporary Czech Republic and Swiss Confederation or its individual cantons, the thesis does not omit the most important drafts of civil law codifications that were not passed like the Helvetian Code or a governmental draft of the Czechoslovak Civil Code from...Pojem "vÄ›c" v ÄŤeskĂ©m a švĂ˝carskĂ©m obÄŤanskĂ©m právu Tato rigorĂłznĂ práce se zabĂ˝vá pojetĂm vÄ›ci v právnĂm smyslu. ĂšstĹ™ednĂm pĹ™edmÄ›tem práce je tedy pojem "vÄ›c", pĹ™iÄŤemĹľ cĂlem práce je porovnánĂ pojetĂ vÄ›ci v právnĂm smyslu ÄŤeskĂ˝m a švĂ˝carskĂ˝m obÄŤanskĂ˝m právem. ZatĂmco totiĹľ ÄŤeskĂ© právo za vÄ›c vedle hmotnĂ˝ch pĹ™edmÄ›tĹŻ povaĹľuje takĂ© pĹ™edmÄ›ty nehmotnĂ©, tedy práva a jinĂ© vÄ›ci bez hmotnĂ© podstaty (tzv. širokĂ© pojetĂ vÄ›ci), povaĹľuje švĂ˝carskĂ© právo za vÄ›ci v právnĂm smyslu vĂ˝luÄŤnÄ› pĹ™edmÄ›ty hmotnĂ© (tzv. ĂşzkĂ© pojetĂ vÄ›ci). Práce obÄ› pojetĂ vÄ›ci analyzuje a následnÄ› porovnává, vedle toho se dále zabĂ˝vá nÄ›kterĂ˝mi zvláštnĂmi pĹ™edmÄ›ty obÄŤanskĂ©ho práva, tj. ĹľivĂ˝m zvĂĹ™etem, ovladatelnĂ˝mi pĹ™ĂrodnĂmi silami a cennĂ˝mi papĂry, vÄŤetnÄ› cennĂ˝ch papĂrĹŻ zaknihovanĂ˝ch. Práce je rozdÄ›lena do třà kapitol: prvnĂ kapitola se pĹ™itom zabĂ˝vá historickĂ˝m vĂ˝vojem pojmu "vÄ›c", a to poÄŤĂnaje Ĺ™ĂmskĂ˝m právem. KromÄ› všech právnĂch Ăşprav obsahujĂcĂch tento pojem na ĂşzemĂ jak dnešnĂ ÄŚeskĂ© republiky, tak Ĺ vĂ˝carskĂ© konfederace ÄŤi jejich jednotlivĂ˝ch kantonĹŻ, práce neopomĂjĂ ani nejdĹŻleĹľitÄ›jšà návrhy obÄŤanskoprávnĂch kodifikacĂ, kterĂ© nebyly nikdy pĹ™ijaty, mezi nimi tzv. helvĂ©tskĂ˝ kodex ÄŤi vládnĂ návrh ÄŤeskoslovenskĂ©ho obÄŤanskĂ©ho zákonĂku z roku 1937. Druhá kapitola se zabĂ˝vá souÄŤasnou právnĂ Ăşpravou pojmu "vÄ›c" v ÄŤeskĂ©m a švĂ˝carskĂ©m obÄŤanskĂ©m...Department of Civil LawKatedra obÄŤanskĂ©ho právaPrávnická fakultaFaculty of La
Multifunctional Semi-detached Building in Svitavy
Diplomová práce obsahuje návrh a stavebnĂ Ĺ™ešenĂ bytovĂ©ho domu s provozovnou napojenĂ©ho na stávajĂcĂ Ĺ™adovou zástavbu ve mÄ›stÄ› Svitavy ve stupni projektovĂ© dokumentace pro provádÄ›nĂ stavby. Objekt má obdĂ©lnĂkovĂ˝ pĹŻdorysnĂ˝ tvar, jedno podzemnĂ podlaĹľĂ, tĹ™i nadzemnĂ podlaĹľĂ, podkrovĂ a stĹ™echa je Ĺ™ešena jako sedlová. K objektu je pĹ™ivedena pěšà komunikace a v blĂzkosti objektu je navrĹľeno parkovištÄ›. StavebnĂ pozemek je severnÄ› svaĹľitĂ˝. Hlavnà část objektu je urÄŤena pro bydlenĂ, pĹ™ĂzemĂ je urÄŤeno 3 provozovnám.The thesis contains the design and construction design of a residential building with an establishment connected to the existing terraced houses in the town of Svitavy in level of project documentation for the construction. The building has a rectangular plan shape, one underground floor, three floors, the attic and the roof is designed as a saddle. The property is brought footpaths and nearby the parking is proposed. Building land is sloping to the north. The main part of the building is intended for living, ground floor is designed for three establishments.
Family House Rb-1
Bakalářská práce obsahuje návrh a stavebnĂ Ĺ™ešenĂ rodinnĂ©ho domu s provozovnou ve mÄ›stÄ› Olomouc ve stupni projektovĂ© dokumentace pro provádÄ›nĂ stavby. Objekt má obdĂ©lnĂkovĂ˝ pĹŻdorysnĂ˝ tvar, jedno podzemnĂ podlaĹľĂ, tĹ™i nadzemnĂ podlaĹľĂ, podkrovĂ a stĹ™echa je Ĺ™ešena jako sedlová. K objektu je pĹ™ivedena pěšà a pĹ™Ăjezdová komunikace a pozemek je oplocen. Hlavnà část objektu je urÄŤena pro bydlenĂ, pĹ™ĂzemĂ je vÄ›nováno provozovnÄ› s účelem cestovnĂ kanceláře.Bachelor´s thesis includes the design and construction plan for a family house with a place of business in the town of Olomouc in the stage of project documentation for construction. The object has a rectangular ground plan, one basement, three groundfloors, attic and roof. The roof is designed as a saddle. To the building lead a pedestrian and access roads and the land is fenced. The main part of the building is intended for living, groundfloor is using for store with the purpose of the travel agency.
Comparison of Economic Efficiency of Management Systems with Prevailing Representation of Sessile Oak (Quercus petraea (Matt.) Liebl.) in the Territory of Křivoklátsko Forest Park (Czech Republic)
The objective of the article was to model the economic efficiency of coppice and compare it with that of an oak high forest (primarily for the territory of Křivoklátsko Forest Park). The model calculations were based on actual expenses and revenues from the area of interest to the maximum possible extent. The calculations included methods both with time factor (dynamic methods, namely the method of net present value) and without time factor (static methods). For the area of Křivoklátsko Forest Park, the examined data showed that the economic efficiency of coppice could be greater than that of high forest or over-mature coppice.O
Mixed-Hybrid Formulation of Multidimensional Fracture Flow
We shall study Darcy flow on the heterogeneous system of 3D, 2D, and 1D domains and we present four models for coupling of the flow. For one of these models, we describe in detail its mixed-hybrid formulation. Finally, we show that Schur complements are suitable for solution of the linear system resulting form the lowest order approximation of the mixed-hybrid formulation
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