Surface temperature analysis of the board with built-in infrared heating

The paper presents partial results of research and develops of innovative board with built-in infrared heating film. The base of technical solution of innovative board is enclosed by the infrared heating film between two construction boards. The paper presents partial outputs related to the research of the innovative board efficiency in relation to surface temperature. The methodology for measuring the surface temperature of the board was determined as a part of the board initial research. Surface temperature sensors were used for measurement. Time required to achieve the reference surface temperature of the board was investigated after switching on the heating film. The results of partial measurements offer the basis for further analysis and research of the innovative board

The Role of the President in the Constitutional System of Ukraine in 1994-1999

Cílem bakalářské práce je zpracování, popsání a zhodnocení změn politického systému na Ukrajině v letech 1994-1999 v době prvního prezidentského mandátu Leonida Kučmy. Práce se dotýká jak vztahů prezidenta s parlamentem a následných konfliktů mezi těmito dvěma aktéry, tak i ukrajinské ústavy jako fenoménu na pozadí celospolečenských a ekonomických změn, přičemž důraz bude kladen právě na ústavu z roku 1996. V práci se proto pokusím popsat a zhodnotit politické kroky Leonida Kučmy, které vedly k posílení prezidentských pravomocí, směřujících ke konfliktu s parlamentem. Powered by TCPDF (www.tcpdf.org)The aim of this bachelor thesis is to describe and analyse the changes of the political system in the Ukraine between the years 1994 and 1999 during the first L. Kuchma's presidential term. The thesis analyses the relations between the president and the parliament and the following conflict between these two authorities. It analyses the Ukrainian Constitution in the context of social and economic changes while putting emphasis on the Constitution from 1996. Therefore, I will describe and analyse the Kuchma's political steps which led to the strengthening of the presidential powers and resulted in causing the conflict with the Ukrainian parliament. Powered by TCPDF (www.tcpdf.org)Institute of East European StudiesÚstav východoevropských studiíFilozofická fakultaFaculty of Art

Noncovalent Interactions by QMC: Speedup by One-Particle Basis-Set Size Reduction

While it is empirically accepted that the fixed-node diffusion Monte-Carlo (FN-DMC) depends only weakly on the size of the one-particle basis sets used to expand its guiding functions, limits of this observation are not settled yet. Our recent work indicates that under the FN error cancellation conditions, augmented triple zeta basis sets are sufficient to achieve a benchmark level of 0.1 kcal/mol in a number of small noncovalent complexes. Here we report on a possibility of truncation of the one-particle basis sets used in FN-DMC guiding functions that has no visible effect on the accuracy of the production FN-DMC energy differences. The proposed scheme leads to no significant increase in the local energy variance, indicating that the total CPU cost of large-scale benchmark noncovalent interaction energy FN-DMC calculations may be reduced.Comment: ACS book chapter, accepte

Self-Consistent Electron-Nucleus Cusp Correction for Molecular Orbitals

We describe a method for imposing the correct electron-nucleus (e-n) cusp in molecular orbitals expanded as a linear combination of (cuspless) Gaussian basis functions. Enforcing the e-n cusp in trial wave functions is an important asset in quantum Monte Carlo calculations as it significantly reduces the variance of the local energy during the Monte Carlo sampling. In the method presented here, the Gaussian basis set is augmented with a small number of Slater basis functions. Note that, unlike other e-n cusp correction schemes, the presence of the Slater function is not limited to the vicinity of the nuclei. Both the coefficients of these cuspless Gaussian and cusp-correcting Slater basis functions may be self-consistently optimized by diagonalization of an orbital-dependent effective Fock operator. Illustrative examples are reported for atoms (\ce{H}, \ce{He} and \ce{Ne}) as well as for a small molecular system (\ce{BeH2}). For the simple case of the \ce{He} atom, we observe that, with respect to the cuspless version, the variance is reduced by one order of magnitude by applying our cusp-corrected scheme.Comment: 23 pages, 5 figure

Diffusion Monte Carlo Study of Para -Diiodobenzene Polymorphism Revisited

We revisit our investigation of the diffusion Monte Carlo (DMC) simulation of p-DIB molecular crystal polymorphism. [J. Phys. Chem. Lett. 2010, 1, 1789-1794] We perform, for the first time, a rigorous study of finite-size effects and choice of nodal surface on the prediction of polymorph stability in molecular crystals using fixed-node DMC. Our calculations are the largest which are currently feasible using the resources of the K computer and provide insights into the formidable challenge of predicting such properties from first principles. In particular, we show that finite-size effects can influence the trial nodal surface of a small (1×1×1) simulation cell considerably. We therefore repeated our DMC simulations with a 1×3×3 simulation cell, which is the largest such calculation to date. We used a DFT nodal surface generated with the PBE functional and we accumulated statistical samples with ∼6.4×105 core-hours for each polymorph. Our final results predict a polymorph stability consistent with experiment, but indicate that results in our previous paper were somewhat fortuitous. We analyze the finite-size errors using model periodic Coulomb (MPC) interactions and kinetic energy corrections, according to the CCMH scheme of Chiesa, Ceperley, Martin, and Holzmann. We investigate the dependence of the finite-size errors on different aspect ratios of the simulation cell (k-mesh convergence) in order to understand how to choose an appropriate ratio for the DMC calculations. Even in the most expensive simulations currently possible, we show that the finite size errors in the DMC total energies are far larger than the energy difference between the two polymorphs, although error cancellation means that the polymorph prediction is accurate. Finally, we found that the T-move scheme is essential for these massive DMC simulations in order to circumvent population explosions and large time-step biases.Chemistry and Chemical Biolog

Konverzia ropo-plynového ložiska Gajary-báden na PZZP

Import 20/04/2006Prezenční výpůjčkaVŠB - Technická univerzita Ostrava. Fakulta hornicko-geologická. Institut geologického inženýrství (541

District Police Department of the Czech Republic in Brno-Bohunice, Preparation for Construction

The aim of the diploma thesis is to prepare the construction called the District Police Department of the Czech Republic in Brno, Bohunice. The diploma thesis contains a technical report on the construction technology project, which deals with architectural and construction design solutions, coordination situation and transport routes, where critical points are assessed time and financial plan of construction, where all construction objects are described with their time and financial schedule, a study of the implementation of the main construction stages, which addresses the various stages of construction. The diploma thesis contains a technical report, item budget, plan for the establishment and liquidation of buildings and drawings of construction site equipment for each stage, design of the main construction machinery for the construction. A detailed time plan of the main building, a plan of its supply of materials for the rough construction was prepared for the given construction. Furthermore, the work contains a technological regulation for a reinforced concrete monolithic staircase, which is related to the control and test plan for a reinforced concrete monolithic staircase. The next assignment deals with the item budget of the main building for the rough construction, the drawing of the formwork for the reinforced concrete monolithic staircase and the economic assessment and evaluation of construction cranes