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Cloud computing technology framework and reducing risks
Akrir, Khaled Ali Ahmed ; Havlíček, Zdeněk (advisor) ; Macák, Tomáš (referee)
The thesis investigates, in a qualitative way, the vectors that contribute to cloud computing risks in the areas of security, business, and compliance. The focus of this research is on the identification of risk vectors that affect cloud computing and the creation of a framework that can help IT managers in their cloud adoption process. Economic pressures on businesses are creating a demand for an alternative delivery of the model that can provide flexible payments, dramatic cuts in capital investment, and reductions in operational cost. Cloud computing is positioned to take advantage of these economic pressures with low cost IT services and a flexible payment model, but at what risk to the business? Security concerns about cloud computing are heightened and fueled by misconceptions related to security and compliance risks. Unfortunately, these security concerns are seldom, expressed quantifiably. To bring clarity to cloud computing security, compliance, and business risks, this research focuses on a qualitative analysis of risk vectors drawn from one-on-one interviews with top IT experts selected. The qualitative aspect of this research separates facts from unfounded suspicions, and creates a framework that can help align perceived risks of cloud computing with actual risks. The qualitative research was done through interviews with experts and through the survey to measure risk perceptions about cloud computing using a Likert scale. The decision-making model and the framework created by this research help to rationalize the risk vectors on cloud environments and recommend reducing strategies to bring the IT industry one step closer to a clearer understanding of the risks-tradeoffs implications of cloud computing environments.
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Analysis of selected factors affecting occurrence of Chalara fraxinea in the environment.
Havrdová, Ludmila ; Šrůtka, Petr (advisor) ; Jaroslava, Jaroslava (referee)
Extensive investigation of ash dieback impact on different rural vegetation types (solitaires, scattered plantations, riparian stands, scree- and ash-alder alluvial forests) was performed in the Lusatian Mts. (the Czech Republic) between 2011 and 2013. The rate of ash dieback and 27 environmental variables were investigated in 80 research plots with a total of 1045 evaluated trees. The developed model (GLM) explained ca 27% of the disease variability. Particular models for each vegetation type importantly differed from each other and explained 28--46% of the disease variability. The variables that positively affected the disease impact included the host crown area, ash area and rate of ash in the stands, tree layer area, canopy closure, north aspect, shrub and herbaceous layer canopy, vertical heterogeneity and standard deviation of TPI. Tree height, the distance and damage of the nearest host as well as the water source distance, slope and its standard deviation affected it negatively. The coincidental attack of the trees by Armillaria sp. and Hylesinus fraxini positively affected the disease progress, whereas the presence of Nectria sp. and Aceria fraxinivorus conclusively decreased progress, most likely via the induction of secondary metabolites. The highly conclusive regression of ash dieback on the number of days with an air humidity of >95% between 6--11 a.m. in the main period of ascospore spread was identified. Because the air humidity near the ground was highly affected by local factors, a GLM model explaining the variability of air humidity with that of investigated factors was developed. This model explained 77% of the variability attributed to air humidity, local factors (TPI and SD of TPI, aspect, slope, altitude, distance from open water, tree and shrub layers canopy, tree stand height, etc.) greatly affected the disease impact related to air humidity. The landscape form was identified as a factor (most likely via air humidity) that affects the impact of the disease -- for example, the stands on mountain tops and slopes were less affected than the stands in valleys. The vegetation types highly differed in the disease extent. In general, the solitaires and scree forests were significantly less damaged than mixed ash-alder forests and riparian stands. The smaller stands were less affected than the more extended, the stands enclosed in canopy of other forests were less damaged than comparable vegetation in open landscapes and stands with higher humidity (riparian stands and mixed ash-alder forests) were more damaged than those without water. The outcome clearly supports the possibility of development and usefulness of appropriate forest and landscape management of the disease.
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Methodology of design multidimensional databases in the farm environment
Vasilenko, Alexandr ; Klimešová, Dana (advisor) ; Toman, Prokop (referee)
This dissertation thesis is focused on bulk unsolicited messages which are present in
current time in all sectors of electronic communications. It is not only e-mail
communication, but also in online forums, discussion contributions, social networking
and more. Analyze spam messages is therefore an essential element in preventing
flooding user mailboxes.
Antispam countermeasures is a set of processes, software tools and methods. It is
necessary to harmonize all these components into one cooperating piece of service.
Administrators of email servers are trying to keep their servers optimally configured. The
problem is that spammers trying continuously these defense mechanisms and filter bypass
to enhance spam processes. Their work is very sophisticated and this fight does not yet
have a clear winner. After enhancement techniques either processes takes place after a
certain time to balance the advantages and disadvantages.
For these reasons it is necessary to have a tool which can be analyzed in depth junk
messages with dynamic data views. This tool can be Online Analytical Processing (OLAP
below), which is very suitable for this purpose.
Presented a method of data extraction and transformation and preparation for storage in
a warehouse DT-MEZ (Data Pump - metadata email messages). This method is part of
the methodology ASOLAP (Antispam - OLAP).
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Entomopathogenic fungus \kur{Metarhizium anisopliae} - biological characterization
KONOPICKÁ, Jana
Entomopathogenic fungus \kur{Metarhizium anisopliae} is one of the most common species used in biological control. Fungus \kur{M. anisopliae} occurs in humid and warm environments. Fungus is able to cause the primary diseases of insect living in soil or on the soil surface. The fungus is widely polyphagous and parasites on a wide range of insects belong to more than 50 orders (Orthoptera, Diptera, Hemiptera, Lepidoptera and Coleoptera). The bachelor´s thesis is focused on a detailed description of the fungus \kur{M. anisopliae} and also characteristic of the other six major genera of fungi used in biological control (\kur{Beauveria, Hirsutella, Isaria, Nomuraea, Paecilomyces, Lecanicillium}) including description of development cycle of entomopathogenic fungi. The thesis also contains a detailed description of the four commercially available biological products based on this fungus \kur{M. anisopliae} (Met52, Green Muscle?, BioCane and BIO-Blast) and examples of practical use of biopreparate Met52 on the selected host.
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Development of mobile application for iOS platform
Aldorf, David ; Šimek, Pavel (advisor) ; Stočes, Michal (referee)
This Bachelor's thesis deal with the development of mobile applications for iOS operating system. Creating of application was based on theoretical knowledge gained in the theoretic part of the bachelor's thesis. It was made a comparison of development environment based on chosen scoring method. The Chosen development environment was Xcode IDE developer by Apple Inc. Then it was create a logical design that contains the layout and describes the functionality of the application. Based on logical design was created graphic design based on Material design by Google.
For the implementation of code was used modern object-oriented programming language Swift. Application allows users login via social network Facebook or via email. It ensures data storage in database FireBase and the users can access their data from other iOS devices. Application generate list of healthy life recipes from database and then keep user's informations for calculate the ideal day meal.
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Evaluation of Self-management in Corporate Environment
Seidlová, Barbora ; Balcarová, Tereza (advisor) ; Dalibor, Dalibor (referee)
Self-management is considered to be a useful strategy in the contemporary changing business environment and is influenced by the key issues such as the time management, goals setting and evaluation of factors influencing performance. The main aim of this thesis is to identify factors determining the essence of self-management and the relationship between each key factors influencing self-management performance by managers within corporate environment. The primary data have been collected through questionnaire survey across all levels of management with managers who seek for further self-development. Complex factors are identified using the exploratory factor analysis, which found 6 factors: (F1) Self-managed worker, (F2) Time-managed, (F3) Planner/analyst, (F4) Well-cared worked, (F5) Life-oriented worker and (F6) Ineffective worker. The confirmatory factor analysis further evaluated three positive and four negative relations between extracted factors. The outcomes can be used as a determination of managers approaches to self-management. These researched results serve managers as the basis for leadership and further development of self-managed team members.
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The Company in a Competitive Environment
Klenovitskaya, Yuliya ; Šrédl, Karel (advisor) ; Svoboda, Roman (referee)
In the conditions of globalization, the intensity of international competition is constantly increasing, which has resulted in increased competition between operators fighting for market dominance. This thesis focuses on the firm in a competitive environment. Its importance and timeliness are obvious in this modern world.
The main objective of this work is to determine the current level of competition in the international market of sportswear and equipment, analyze the factors that negatively affect the operations of the organization and thus reduce its competitiveness. The application part of the thesis focuses on the analysis of the competitive environment of the company Adidas AG. They analyzed strengths and weaknesses, threats and opportunities existing in the market in which it operates, and external factors affecting the business.
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Company in a competitive environment
Marvanová, Adéla ; Šrédl, Karel (advisor) ; Soukup, Alexandr (referee)
This thesis focuses on a particular company operating in a competitive environment. The first part deals with the theory of the firm needed to process the practical part and the key terminology is defined. The work is concerned with the concept of enterprise, its main objectives, structure and ways of its creation. There are mentioned types of legal form of business and criteria for each of those businesses that are used in the Czech Republic. Attention is paid to concepts in the field of competition and competitive strategy. For the evaluation of the company I consider two types of analyzes: TEMPLES and SWOT. The practical part is focused on the analysis of the particular company on the market in the external and internal environment. The name of the company is DMA Praha s.r.o. It has been in business for 17 years. First is briefly introduced and described its creation, operation, management strategies, structure, and its place on the market. Not forgetting the financial situation of the company in the short and long term and comparisons within the closest competition. Interesting points of this part are incentive trends that affect the internal environment of the company. Emphasis is also placed on the analysis of the competitive environment in regards of compensation and medical aids. The most important findings and conclusions are presented in tables or in a chart in the next section. All findings were used to build particular analyzes that served to assess the performance and competitiveness of the company. Finally, it provided a comprehensive view of the state of the company and suggestions that might be an inspiration for its development.
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Process-Based Model of Mixed-Matrix Membrane
Čapek, P. ; Hejtmánek, Vladimír ; Veselý, M. ; Sysel, P. ; Kočiřík, Milan ; Brabec, Libor ; Zikánová, Arlette ; Bernauer, B. ; Fíla, V.
The focus of this contribution was on the formulation and verification of a process-based model of the mixed-matrix membrane that consisted of the polyimide matrix synthesized from the monomers 4,4’-(hexafluoroisopropylidene)diphtalic anhydride and 4,4’-oxydianiline, and silicalite-1. When a solution of a polyimide precursor in N,N-dimethylformamide was ready, silicalite-1 particles were dispersed in the solution and the dispersion was subsequently cast on a Teflon support plate. An initial mass ratio of silicalite-1 and polyimide was about 1:1. After solvent removal, the films were heated in subsequent steps up to 230°C for two hour. From a process-based model point of view, a key operation of the entire synthesis was slow sedimentation of silicalite particles in the viscous solution. Preliminary observation of 2D cuts through the solid membrane in a scanning electron microscope revealed that there were a lot of contacts among the silicalite particles. Therefore, a sequential (ballistic) deposition algorithm, well representing sedimentation in a low-energy environment, was used to create an off-lattice model of spatial distribution of the silicalite particles in the polyimide matrix.
Fulltext: content.csg -  PDF
Plný tet: SKMBT_C22012102413461 - PDF
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