The storage capacity of underground gas storages in the Czech republic

Sources of natural gas are in most cases located in remote areas far from the places where the gas is utilized, i.e. especially developed industrial countries to which it is transported via pipeline. However, transit gas pipelines, which are transporting extracted gas to the consumers, have a relatively limited peak capacity, the transit supplies essentially have a stable character and are not able to cover increased seasonal or peak demands for gas in gas distribution networks. The solution of this problem is the main task for underground gas storages (UGS) that through the operative regulation maintain stability and reliability of the entire gas system. This article provides a general list of options that can increase the storage capacity of natural gas in underground gas storages and focuses on factors that influence the options of an individual UGS

Concept of leak tightness monitoring at underground gas storage

The most important part of the operation of each underground gas storage facility is the implementation of a regular monitoring system for leak tightness monitoring. This article deals with the design of a proposal leak tightness monitoring concept in underground gas storage in porous reservoirs (depleted gas/oil reservoirs, aquifer reservoirs). This concept interconnects all commonly used and established leak tightness monitoring methodologies and evaluates them in time with comparison with historical results with reference to possible solutions or implementation of remedial measure

Rank one lattice type vertex operator algebras and their automorphism groups, II: E-series

Let L be the A_1 root lattice and G a finite subgroup of Aut(V_L), where $V_L$ is the associated lattice VOA (in this case, Aut(V) is isomorphic to PSL(2,\Bbb C)). The fixed point subVOA, V^G was studied in q-alg/9710017, which finds a set of generators and determines the automorphism group when G is cyclic (from the "A-series") or dihedral (from the "D-series"). In the present article, we obtain analogous results for the remaining possibilities for G, that it belong to the "E-series": G\cong Alt_4, Alt_5 or Sym_4.Comment: Latex, 10 page

Interest-Point Detection on CUDA

Detekce rohových bodů je jednou z mnoha činností, v rámci počítačového vidění, použitelných pro určování pohybu, sledování objektů, porovnávání obrazů, atd. Většina algoritmů je však komplexních a výpočetně náročných. Zde vstupuje platforma CUDA. Funkce běžící paralelně na grafických akcelerátorech mohou výrazně snížit čas nutný pro výpočet. Takto je umožněno detekovat rohové body v real-time nebo rychleji. Práce se zabývá algoritmy Moravec a Harris a jejich efektivní implementací na CUDA. Důležitý je i průzkum možností a výkonu platformy CUDA.Corner point detection is one of many functions used in computer vision for tasks such as tracking, detecting objects, comparing images and much more. Many of the algorithms are complex and require a lot of CPU time. This is where the CUDA platform comes in. CUDA kernels run parallely on graphic accelerators can rapidly decrease time needed for execution, allowing even these complex calculations to work in real time or even better. Text focuces on Moravec and Harris corner detection algorithms and their effective implementation on CUDA. Examination of potetntial and performance of CUDA platform is also importatnt.

The forecast of thunderstorm on the airports LKTB and LKMT

Tato bakalářská práce je zaměřena na nebezpečné jevy v letectví, na přítomnost bouřek v prostoru letišť Brno-Tuřany a Ostrava-Mošnov se zvláštním zřetelem na sledované období od roku 2005 do roku 2009 a jejich předpovídání.This bachelor’s thesis is focused on hazardous atmospheric phenomena namely presence of thunderstorms in Brno-Turany and Ostrava-Mosnov aerodrome area and it’s forecasting. Extra care is taken for observed period since 2005 till 2009.