National Repository of Grey Literature 152 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Decompositions of directed and undirected graphs
Pelikánová, Petra ; Loebl, Martin (advisor) ; Klimošová, Tereza (referee)
Eulerian graphs have a closed walk traversing each edge exactly once. Finding such a walk is a basic arc routing problem based on a road network. Most of the problems with applications in operational research are NP-hard. We describe a formal model of a road network and vehicle routes and formulate several arc routing problems motivated by winter road maintenance in the Czech Republic. The main part is focused on single vehicle routing problems on trees. We propose a new unfairness minimization problem for finding a vehicle route with properties that lead to a minimal number of resident complaints against unfair maintenance. Residents feel like they are skipped when the vehicle route has multiple trips and passes nearby without providing maintenance to their street. By reduction of the necklace splitting problem to the unfairness minimization problem we prove it is PPA-complete. Further, we define a restricted arc routing problem on trees which formalize condi- tions given by Czech legislation. We proved the existence of a polynomial algorithm for deciding whether a single vehicle route exists when there is a single priority for roads. If multiple priorities are used, we express conditions and conjectures when the problem has polynomial complexity. Finally, a utilization of the model is illustrated by an...
Algorithmization of social networking sites and its perception by adolescents
Hegedüš, Tomáš ; Švelch, Jaroslav (advisor) ; Reifová, Irena (referee)
The diploma thesis Algorithmization of social networks and its perception by adolescents deals with the issue of algorithms which lead to personalization of social networks. Their perception by children and adolescents is currently not sufficiently explored. In the theoretical part, I demonstrate how the current studies examine the perception of algorithms on a sample of the entire population, in the context of adolescents how they focus on social networks as a whole. Therefore, the ambition of this thesis is to research the intersection of these three spheres and its impact on adolescent's perception of algorithmisation of social networks. Through qualitative research using the method of semi-structured interviews, this thesis outlines trends that may prevail in this area. An analytical synthesis of knowledge also answers the questions of how adolescents are informed about the possibilities of influencing the selection and sorting of the content and whether they show interest in these possibilities. In the theoretical part, I introduce readers of this work to the issue of new media, how social media developed, including their convergence. Among the researched social networks are Facebook, Instagram and YouTube. To understand the comparison of reality and the statements of the respondents, in the...
Flat and formalistic approach in law
Pavlíček, Libor ; Maršálek, Pavel (referee)
Flat and formalistic approach in law Many processes in law take place automatically and through inertial force, without admitting one's free will and without encompassing values important to man (freedom, dignity, justice). The bearers of the process of automation in law are Machines (or Automats), i.e. tools ensuring primary legal certainty. However, in addition to the subpage of legal certainty, law also consists of the subpage of justice and effectiveness, which is not controlled by Automats, because their algorithms do not often reflect this subjective dimension in law. The trend of automation in law undoubtedly contributes to a number of improvements, however, there appear risks as well. Since the human soul cannot be programmed by Automats, it cannot be assumed that their decision-making, i.e. their output, will be fair and effective in all circumstances. However, in traditional approach in law this output is considered equal to a binding legal norm. As an example of Automat in the field of mobility the traffic lights may serve, in the field of state administration there are automatic forms or formulas, in the judiciary Automat is represented by a judge acting as a robot (subsumption automat), and artificial intelligence may be seen as the most sophisticated Automat of all. Automats are tools...
Mobile Application Identification Based on TLS Data
Borbély, Richard ; Matoušek, Petr (referee) ; Burgetová, Ivana (advisor)
This thesis deals with identification of mobile applications based on data from network protocol TLS. It conducts a research of values from the TLS handshake, specifically of JA3, JA3S and SNI values. The work represents an application that includes an algorithm performing a classification over TLS data. The results of the classification represent information based on which we can decide, if the identification of the apps was successful. This method allowed to identify 17 of the 18 given applications. The benefit of this work is the ability to identify mobile apps based on JA3, JA3S and SNI values and for example, it can be used in network administration.
Glitch Sculpture (Time)
Blažek, Tomáš ; Vítek, Jiří (referee) ; Gabriel, Michal (advisor)
The bachelor's thesis encounters the phenomenon of error in digital technologies through a three-dimensional defective object. The geometric abstraction of the error is formed from the remains of a realistically modeled figure. The defect is entered into the production code for 3D printing via algorithms. Emphasis is placed on the applicability of such an algorithm for three-dimensional glitch art. The resulting sculpture thus looks exactly and yet relaxed in the spirit of contemporary tendencies working with error.
Algorithms for Parallel Searching in XML Datasets
Kruliš, Martin
This thesis will address the problems of indexing XML datasets and finding effective searching methods for indexed data. Defining data structures and algorithms that take highly parallel approach to the searching problem is considered to be main objective, therefore the implementation may benefit from the power of multicore CPUs. Prototype of such implementation will be presented with the thesis. Internal query model will be developed as a common layer. Multiple front-ends representing different query languages will be able to operate on the top of this model, thus the engine will not be dependent on any particular language. Sample front-end for a subset of XPath will be implemented along with the prototype.
The TikTok phenomenon and its influence and perception in Czechia
Kudyn, Viktorija ; Ortová, Nina (advisor) ; Vranka, Marek (referee)
Annotation: Bachelor's thesis aims to define perception of the TikTok social media platform in Czechia. Theoretical part covers the evolution of the platform alongside other prominent social media, reasons for its growing popularity and security challenges it faces globally, with focus on the most prominent case of TikTok ban executed by Donald Trump, president of the United States. Quantitative survey among respondents aged 13-35 looks into the perception of TikTok among Czechs in aspects examined in theoretical part. Respondents included active users of the application as well as those who are aware of its' existence but are not present on the social media. Survey analysis aims to compare the answers of respondents aged 13-18 and 19-35 and define their differences in views. Those views are then summarized to give a possible bigger picture of the situation in Czechia.
Černický, David ; Štych, Přemysl (advisor) ; Laštovička, Josef (referee)
This thesis deals with factors influencing the average speed on Czech roads. Curvature and inclination of the slopes were selected among the main factors influencing the average speed. Until now, these factors have been considered at discrete intervals, not as continuous functions. The function for calculating the curvature is based on ČSN 73 6101, where the equation with all variables is directly defined. The functional relationship for the movement of vehicles in sloping terrain was created from data from scientific articles. Therefore, an algorithm was implemented in this thesis, which can automatically evaluate the average speed on the road network. Python was used to implement this algorithm. Furthermore, there is a testing section for travel times, which is validated using route planners and also supported by extensive field research. Testing took place in GIS using network analysis methods. Testing has shown that the inclusion of curvature and inclination will significantly improve the calculation of travel times. key words: network analyst, curvature, gis, algorithm
Picek, Matěj ; Krejčí, Daniel (referee) ; Tobola, Ondřej (advisor)
This thesis deals with the basic principles of the functioning of the technology of generative design, using the method of topology optimization and finding their potential with the capabilities of the application in the field of furniture design. The main outcome is a functional prototype of a low relaxing chair, which specific construction is designed using the method of topology optimization.
Názorná demonstrace principů a funkčnosti vybraných algoritmů a metod umělé inteligence: A* a jeho alternativy
Hauschwitz, Jan
This thesis focuses on the project and realization of the implementation of the algorithm A*. The created result is used in animated graphic and interactive demonstration of the qualities A*, The other algorithms and the comparison of their functioning, results and efficacy are also part of the thesis. In the end, the results are evaluated.

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