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Suggestion of a Company Communication Mix
Sombergová, Markéta ; Jelínek, Martin (referee) ; Kaňovská, Lucie (advisor)
The diploma thesis focuses on problems associated with the suggestion of the communication mix of the Fitness centre „Kameňák“. It includes evaluation of the current state of company´s communication mix and revelation of problems in this field. Afterwards the thesis contains suggestions for improvement of this state. The diploma thesis is divided into three parts. The first part contains theoretical knowledge of the subject, the second part is focused on analysis of the company´s current state and the main content of the third part is suggestion of such a communication mix that can help the company present better its services and brings more customers.
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Systems with frequency hopping
Jelínek, Martin ; Říha, Kamil (referee) ; Pust, Radim (advisor)
This bachelor´s thesis deals the systems, which use the Frequency Hopping (FH). The brief history of frequency hopping and its development together with Adaptive Frequency Hopping technology (AFH) is introduced. The general function principle of AFH, which differs AFH from FH, is described. Advantages and disadvantages of frequency hopping and its division into fast (FFH) and slow (SFH) are described next. Some of military communication systems (e.g. SINCGARS, Eritac, MRR, Panther V-EDR and next) as well as some of commercial systems (e.g. worldwide-spread Bluetooth system) are introduced. Mentioned systems use digital modulations, three of basic digital modulations are demonstrated (ASK - Amplitude Shift Keying, FSK - Frequency Shift Keying and PSK - Phase Shift Keying). Basic types of used spectrum spreading (FHSS, DSSS, OFDM) are mentioned next. The FHSS type of spectrum spreading is described in more detail, because the spectrum spreading is done by frequency hopping. Particular systems contain error control of radio transmission of information, which is realized by FEC (Forward Error Correction) and ARQ (Automatic Repeat Query) techniques. Practical part of the bachelor´s thesis demonstrates, with usage of Matlab programme, adaptive frequency hopping function (AFH) during communication of Master-Slave devices, where more systems are active. This causes the interference of the communication. This interference is caused by static and dynamic jammers, that work in the same band as the Master-Slave devices.
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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.
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Million Dollar Baby and American sniper
Jelínek, Martin ; ŠERÝ, Ladislav (advisor) ; Poláček, Vít (referee)
This diploma thesis analyses two films by Clint Eastwood Million Dollar Baby and
American Sniper. Its focus is aimed at the formal storytelling aspects, structure of
the storyline and plot devices in the screenplays. The first film is an example of
misusing these plot devices; the theme being euthanasia remains irrelevant from
the viewers perspective although it was meant to resonate strongly at first.
Analysis of the second film shows us the discrepancy of what the film "wanted" to
be and the actual message it implicitly presents to the audience. Instead of being
an objective reflection of the real events (in this case the war in Iraq) it is on
purpose misleading in presenting of commonly known facts and hence it becomes
propaganda. The analysis of the storytelling devices in this thesis can be also
applied on different films and cinema in general.
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Technological integration of ICT services
Jelínek, Martin ; Šebesta, Michal (advisor) ; Holub, Ilja (referee)
This thesis deals with the integration of ICT services at the technological level. It mainly focuses on the integration of services which are provided by third parties and a user cannot change them. In this work are described the characteristics of web services and the typical methods for designing their application interface. Furthermore, are described various approaches to integration of applications at the technological level and some integration tools. As part of this thesis, was also created an application designed for integration of web services. This application can be categorized as message-oriented middleware. The aim was to create a simple application, which still meets basic requirements for this kind of applications. This thesis also contains a description of the created application and a description of problems that occurred during implementation. During the application development were used some integration design patterns, which are also described in this thesis.
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The possibilities of automated extraction of data from publicly available sources
Jelínek, Martin ; Maryška, Miloš (advisor) ; Pavlíčková, Jarmila (referee)
The theoretical part of this work describes some options that can be used to retrieve data from different information sources. It also discusses the possibility of automatic data processing and tools and technologies that can be used to do this. Mainly technologies which can be used to store acquired data and to analyze them. This includes description of different types of databases or data mining methods. The practical part of this work is devoted to the creation of an application for automatic downloading of articles from news sites. The application allows you to download articles from selected news sites, and save parsed article text into a file and additional information to the database. The purpose of the application is mainly collecting data that can be used for further analysis . The application allows searching in downloaded articles using keywords, create topic groups from articles and monitor articles history. This allows for example to monitor possible differences between articles whitch belongs to the same topic and were downloaded from different news sites or to monitor progress in some topic. Another motivation is archiving of old articles for further analysis, because the articles on news sites are constantly changing.
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Impact of late effects severity of anticancer therapy on subjective quality of life of childhood cancer survivors
Blatný, Marek ; Kepák, T. ; Sobotková, Veronika ; Jelínek, Martin ; Slezáčková, Alena ; Bartošová, Kateřina ; Tóthová, K.
Psychosocial problems of patients who underwent childhood malignancy treatment are together with health problems the most severe consequences of anticancer therapy. In this study, we deal with relationship between severity of late effects and subjective quality of life of childhood cancer survivors. The sample consisted of 95 cancer survivors (47 boys and 48 girls) aged 13 to 19 who were in remission for 2 to 5 years at the time of examination. To measure quality of life we used the Minnesota-Minneapolis Quality of Life Instrument (MMQL), severity of late effects we assessed on 4-point scale in accordance with CTCAE (Common Terminology Criteria for Adverse Events v3.0). Severity of late effects of anticancer therapy influences negatively physical functioning, cognitive functioning, body image and social functioning. Psychological (emotional) functioning and outlook of life are not significantly impacted by severity of late effects.
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Antisocial behavior of adolescents and its relationship to dimensions of Five factor model of personality
Sobotková, Veronika ; Blatný, Marek ; Jelínek, Martin
Antisocial behavior essential type of risk behavior in adolescence. The incidence, seriousness, and typical symptoms are solved in particular in relation to demographic variables - age, sex, size of place of residence. Relatively few studies deal with the relationship between antisocial behavior and personality traits. In this study, we focused on the relationship between the Big Five dimensions and antisocial behavior. Research was conducted with a sample of high school students (N = 108, 51% girls). We used antisocial behavior scale from the SAHA questionnaire (Social and Health Assessment, for personality traits we used the NEO-FFI questionnaire. Analyses were made separately for girls and boys. For both genders, antisocial behavior is consistently associated with Conscientiousness. Another factors have different connections with antisocial behavior for boys and girls. The results support the hypothesis of a different aetiology of antisocial behavior in boys and girls.
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Psychological predictors and correlates of subjectively assessed health problems: a longitudinal perspective
Slezáčková, Alena ; Millová, Katarína ; Blatný, Marek ; Jelínek, Martin
The study examines the psychological correlates of health problems in people of middle age and their predictors in adolescence. The sample consisted of 74 participants (32 men and 42 woman aged from 41 to 44 years) who participate in the longitudinal study running from 1961. An analysis of data obtained using the methods EPI, SOC, NEO, TCI, Logo-test and Health questionnaire revealed that the most significant predictor of health problems in adulthood is extraversion at age 16. We found in middle age connections between psychosomatic problems and the degree of extraversion, neuroticism, Sense of Coherence and self-directedness. Specific health problems (pain, shortness of breath) in middle age are also connected to the degree of existential frustration and self-directedness. The results of this study highlight the importance of studying the psychological correlates and predictors of health status of individuals in adulthood.
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