Wyniki wyszukiwania - Biblioteka Nauki

1

Modeling and rendering of convective cumulus clouds for real-time graphics purposes

100%

Kobak P. , Alda W.

|

tom Vol. 18 (3)

241--268

EN

The paper presents a simulation and rendering model of three dimensional covective cloud evolution. The model is physically based, however its purpose is graphical. The main stress is put on balancing two parts of a model: the atmsphere simulation with convective motion of air and water vapor combined with rendering of semi-transparent and light-scattering clouds, in order to achieve realistic animation in real-time. We examine and compare two algorithmic approaches based on CPU and GPU computations.

2

Prevalence of gastrointestinal parasites of water buffaloes raised in the Notecka Forest region (Poland)

100%

Kobak P. , Pilarczyk B.

Bulletin of the Veterinary Institute in Puławy

|

2012

|

tom 56

|

nr 1

EN

The aim of this study was to determine the prevalence of infection with gastrointestinal parasites in water buffaloes raised in the Notecka Forest region in the Wielkopolska Province (Poland). Coproscopic examinations were performed between January and June 2009. The mean prevalence of gastrointestinal parasites in the water buffalo herd was 44%. Gastrointestinal nematodes (10%) and flukes (Fasciola hepatica - 32% and Paramphistomum cervi - 11%) were found in the examined animals. The high prevalence of infection with gastrointestinal parasites was caused by the lack of an appropriate helminth control programme. Despite the fact that they are raised on marshx meadows, where good conditions for parasites' development exist, these animals were not systematically dewormed. It is necessary to devise a helminth control programme for the studied water buffalo herd.

3

Porównanie behawioryzmu udomowionych zwierząt roślinożernych (bydła mięsnego i koni) w naturalnych warunkach bytowania w otulinie przyrodniczego Parku Narodowego "Ujście Warty"

80%

Sablik P. , Kobak P. , Biała M. , Matkowski D.

Acta Scientiarum Polonorum. Zootechnica

|

2010

|

tom 09

|

nr 4

PL

Celem pracy było wykazanie różnic i podobieństw w zachowaniu dwóch wspólnie wypasanych gatunków zwierząt roślinożernych (bydła i koni) oraz sprawdzenie czy zachowanie zwierząt chowanych w warunkach zbliżonych do naturalnego bytowania wpływa na zmianę ich behawioru i sprzyja występowaniu zachowań typowych dla wolno żyjących przodków. Obserwacje behawioralne dotyczące 500 krów i 40 koni prowadzono przez czternaście dni. Aby uzyskać wiedzę na temat trybu dziennego poszczególnych osobników oraz stworzyć etogram i opracować dane na temat rytmu dobowego obu stad, obserwacji dokonywano w dwóch różnych porach dniach. Przeprowadzone badania wskazują na powielający się schemat codziennego zachowania obu stad. Zwierzęta, pomimo różnic gatunkowych, nie przejawiały wobec siebie agresji, tolerowały swoją obecność. Zwierzęta udomowione – bydło i konie – dobrze przystosowują się do warunków, w jakich bytowali ich wolno żyjący przodkowie. Utrzymywanie ich na terenach zielonych, np. parkach krajobrazowych, parkach narodowych czy ich otulinach, może stanowić bardzo korzystny element kształtujący ekosystem.

EN

The aim of this study was to demonstrate the differences and similarities in the behavior of two common species of grazing herbivores (cattle and horses) and to verify whether the behavior of animals reared in conditions similar to the natural habitat affects to change their behavior and promotes the occurrence of behaviors typical of free-living ancestors. Behavioral observations of 500 cows and 40 horses were carried out for fourteen days. To obtain knowledge about the mode of living of individuals and create etogram and develop data on the circadian rhythm both stocks observations madesent in two different times of day. The studies indicate a pattern replicating the daily behavior of both stocks. Animals despite species differences did not show aggression towards each other, tolerate their presence. Domesticated animals-cattle and horses, well adapted the conditions in which the existence of their free-living ancestors. Maintaining the green areas such as landscape parks, national parks and their buffer zones can be a very positive element in shaping the ecosystem.

4

Comparison of Body Condition Scores in Polish Holstein-Friesian cows of Black-and-White variety managed in different housing systems

70%

Sablik P. , Kobak P. , Skrzypiec A. , Klenowicz A. , Derezinska D.

|

nr 1

5

Volunteer computing simulation using repast and mason

41%

Byrski A. , Feluś M. , Gawlik J. , Jasica R. , Kobak P. , Jankowski G. , Nawarecki E. , Wroczyński M. , Majewski P. , Krupa T. , Strychalski J.

Computer Science

|

2013

|

tom Vol. 14 (1)

153--172

EN

Volunteer environments usually consist of a large number of computing nodes, with highly dynamic characteristics, therefore reliable models for a planning of the whole computing are highly desired. An easy to implement approach to modelling and simulation of such environments May employ agent-based universal simulation frameworks, such as RePast or MASON. In the course of the paper the above-mentioned simulation frame Works are adapter to suport simulation of volunteer computing. After giving implementation details, selected results concerning computing time and speedup are given and are compared with the ones obtained from an actual volunteer environment.