|
|
Plant-derived products as effective inhibitors of diarrhea causing microorganisms
Šmíd, František ; Kokoška, Ladislav (advisor)
Since certain species are used in form of dietary supplements in developed world as antidiarrheal agents and because of presence of reports describing antidiarrheal properties of
medicinal plants used in traditional African medicine, we can expect, that systematic microbiological and phytochemical research of plant derived products (extracts, essential oils and their constituents) can lead to the discovery of effective antidiarrheal low-cost agents applicable for elimination of diarrhea in certain African regains.
|
|
|
High Performance Applications on Intel Xeon Phi Cluster
Kačurik, Tomáš ; Hrbáček, Radek (referee) ; Jaroš, Jiří (advisor)
The main topic of this thesis is the implementation and subsequent optimization of high performance applications on a cluster of Intel Xeon Phi coprocessors. Using two approaches to solve the N-Body problem, the possibilities of the program execution on a cluster of processors, coprocessors or both device types have been demonstrated. Two particular versions of the N-Body problem have been chosen - the naive and Barnes-hut. Both problems have been implemented and optimized. For better comparison of the achieved results, we only considered achieved acceleration against single node runs using processors only. In the case of the naive version a 15-fold increase has been achieved when using combination of processors and coprocessors on 8 computational nodes. The performance in this case was 9 TFLOP/s. Based on the obtained results we concluded the advantages and disadvantages of the program execution in the distributed environments using processors, coprocessors or both.
|
|
|
Efficient Implementation of High Performance Algorithms on Intel Xeon Phi
Šimek, Dominik ; Hrbáček, Radek (referee) ; Jaroš, Jiří (advisor)
This thesis is dedicated to the implementation of high performance algorithms on the Intel Xeon Phi coprocessor. The Xeon phi was introduced by Intel as a new MIC (Many Integrated Core) architecture in 2012. The theoretical part of the thesis is focused on the architecture of the coprocessor (with peak performance of 2 tFLOPS for a single precision data) and on the procedure of algorithms implementation and optimization. The theoretical knowledge is then applied to a practical examples with demonstration of the implementation and the optimization of algorithms and work with the coprocessor. In the practical part of the thesis, simple benchmarks such as a vector matrix multiplication and a matrix multiplication are explained and implemented. In the first benchmark 6.5% of theoretical coprocessor performance was achieved, in the second it was much more. In following chapter a more complex benchmark - simulation of a particles system (N-Body), that reached more than 35% of coprocessor performance (725 gFLOPS), is discussed. The following section is dedicated to some interesting problems such as optimization of a MATLAB module k-Wave (propagation of the ultrasound waves), extraction of I-vector (speech processing), cross-compilation of existing libraries, modules and programs. In the conclusion of the thesis the usage the potential of the Intel Xeon Phi is evaluated.
|
|
|
Design of education board
Hadáček, Milan ; Buganská, Tamara (referee) ; Karásek, David (advisor)
The aim of my diploma thesis is to blueprint a design of multi-functional educational console. The dissertation contains several variant studies, color drawings and concrete shape execution. It entails a certain development in the area of positioning and multi-functional appliances. The thesis itself deals with the concrete shape execution of multi-touch educational console as well as seat in the form of gym ball. Short video cut from the area of interactive media forms a part of my work too.
|
|
|
Analysis of Cryptographic Algorithms 802.11
Vojtíšek, Jindřich ; Sobek, Jiří (referee) ; Novotný, Bohumil (advisor)
This work deals with wireless standard 802.11, primaly about security algorithms used in them. Further there is made analysis of algorithms WEP, WPA and WPA2. This algorithms are described how coding by them works and for easier understandig are added block schemes of their principles. In practical part is realized algorithms WEP, WPA and WPA2 in program Matlab simulink. Model is complemented by graphs which shows how data changes when comming throught this systems.
|
|
|
Security of wireless computer networks
Jelínek, Martin ; Pelka, Tomáš (referee) ; Doležel, Radek (advisor)
The master's thesis deals with the issue of Wireless Local Area Network (WLAN) from the viewpoint of the security and functional principle of security mechanisms. The transition to the issue concerning the security is accompanied by the methods of wireless data transmission operating on the level of physical layer (FHSS, DSSS, OFDM, MIMO), which is followed by the summary of individual 802.11 standards. The next part deals with the issue of shared transmission medium (CSMA/CA), influence of interference and correcting mechanisms (RTS/CTS). Within the security, the principles of the authentication along with the commonly used methods of security (WEP, WPA, WPA2) are described in detail. The first part concerning security deals with the security in the form of the WEP protocol, which is considered insufficient nowadays and points out the imperfect implementation and the consequent risks. The following part describes the security in the form of WPA which eliminates the implementation weaknesses of the previous WEP security protocol. The description of commonly used mechanisms of authentication (PSK, 802.1x), required temporary key management (PTK, GTK), data integrity (MIC) and encryption which uses TKIP protocol are also included. The last part, possible WLAN security, is aimed at the full support of 802.11i standard, which is called WPA2 (sometimes RSN). That part describes the basic encryption security element CCMP, which is based on the AES block cipher modes. The practical part of the thesis deals with the security verification of current wireless networks. In the process of verification the accessible HW means and programming tools of Open Source Software (OSS) are used. By means of verification it has been pointed out that there are possible security risks resulting from the security method which has been used. Also several recommendations how to reduce the security risks of the used method to minimum are mentioned.
|
|
|
Sulfur compounds of "sweet garlic" (\kur{Tulbaghia violacea} Harv.)
RANGLOVÁ, Karolína
The theoretical part of the Bachelor thesis summarizes the formation pathways of sulfur compounds in plants of the genus Allium and shows the similarity between "regular" garlic (Allium sativum L.) and "sweet" garlic (Tulbaghia violacea Harv.). In the experimental part, marasmicin was extracted from the rhizomes of T. violacea and allicin was synthesized from diallyl disulfide. Antimicrobial properties of both compounds were tested in two ways - by the disk diffusion method against several strains of bacteria and yeasts (Clavibacter michiganensis, Erwinia amylovora, Xanthomonas axonopodis, Bacillus cereus, Escherichia coli, Micrococcus luteus and Saccharomyces cerevisiae) and by dilution method against three strains of bacteria (Bacillus cereus, Escherichia coli and Micrococcus luteus).
|
|
|
Multimedia method of training basic football skills for children (6-8 years)
SYROVÁTKA, Karel
The aim of this graduation thesis is, on the basis of specialized literature and practical knowledge, to create, compile and verify a multimedia set of individual game activities exercises suitable for the select age in the form of DVD. We concentrate the theoretical part on a broader specification of the age group, as well as on the abilities important for the development of a young sportsman. In compliance with the gathered information of the theoretical part and the specialized information from practice we created a set of exercises which serves the model for making a DVD. The instructional DVD can be used by coaches, teachers and parents of young footballers. It provides simple directions how to use the exercises in basic game activities of an individual. We made the DVD in a simple and clear form even for children themselves, so after seeing the film they can train with their friends as well.
|
|
|
Creation programme training for encompassment techniques balls in football
ŠVEC, Martin
The baccalaureate work deals with the creation of a program of rehearsal for mastering the ball technique in football. The work consists of two parts {--} theoretical and practical. The theoretical part includes football characterization, performance and description of individual exercises. The practical part includes the description of the recording progress and the video programme on DVD with illustrating the execution of individual exercises. The work should serve as a methodical aid for football coaches of all age groups.
|
|
|
Practice programme of football goalkeepers for young and junior category- systematic DVD
KOPŘIVA, Luděk
Sence of dissertation is completion up-to-date knowledges from practice footballs goalkeeper and illustration of elements this practice. Programme is identified for widest but also for special public. Like instrument for this purpose is used multimedia DVD with exhibitions several practices football goalkeeper. It helps to orient in probleme of selection acceptable procedures by creation of practices units and in sorting of several practices in frame of practice. It contains instruction to appropriation of basic know-how and for their resulting expansion oriented to perfect encompassment and to growth of effciency wards. It illustrates how should look pracices for goalkeeper and it illustrates way they should have coachs specialist, coachs beginner and all coach working with football goalkeepers taken on activity of personal practices that are reasonable their wards given to conditions and fantazy of coach.
|
guest ::
