|
|
Společenská odpovědnost malých a středních podniků v oděvním průmyslu
Čermák, Jakub
Čermák, J., Social responsibility small and medium enterprises in the clothing in-dustry. Bachelor's thesis. Brno: Mendel University in Brno 2018. The aim of the bachelor's thesis is to evaluate the current situation on the Czech market in the clothing industry and to create the final plan for integrating corpo-rate social responsibility into the company strategy. The evaluation of the actual situation was based on a quantitative questionnaire survey and telephone survey. These questionnaires have made it clear that companies most support the area of the environment. Conversely, the area of community involvement came off poorly and therefore was created the plan for improvement of this area with the result-ing cost calculation. The final plans were drawn up from the results of the re-search. The final plans are adapted to both, new and more advanced companies in corporate social responsibility.
|
|
| |
|
|
Faktory ovlivňující rozhodnutí o implementaci chatbota v malých a středních podnicích
Čermák, Jakub
Čermák, J. Factors influencing the decision to implement chatbot in small and me-dium enterprises. Diploma thesis. Brno: Mendel University, 2021. The diploma thesis deals with the identification of internal and external factors of small and medium enterprises in the manufacturing industry, which are considering the implementation of chatbot technology. Primary data are obtained through a questionnaire survey and in-depth interviews, based on which it was found that the implementation of chatbot is most affected by the benefits of chatbot implementation, chatbot development and implementation, effects of chatbot implementation and risk of customer loss. The key factors, the results of the ques-tionnaire survey and the results of the in-depth interviews were used to create recommendations for companies that plan to implement chatbot technology.
|
|
|
Research on the load-carrying capacity of lubricating film in rolling bearings
Šmíd, David ; Čermák, Jan (referee) ; Omasta, Milan (advisor)
This diploma thesis deals with the problem of sudden contamination of the elastohydrodynamic contact by solid particles and their influence on parameters affecting the lubricating film, such as surface texture and real film thickness, especially for line contact. The contact is operated under conditions corresponding to the operation of the main wind turbine bearings, with measurable parameters supported by optical observations. The main effort of this work is to relate the influence of the flow of solid particles in the lubricant to the parameters determining the lubrication regime. For the experiments, a taper-on-disc device was constructed to simulate linear contact. Using this device, the effects of different solid particles on the damage of a sample (roughness parameters Ra and Rq) with linear contact and the influence of this altered structure on the lubricating film thickness (hmin) are experimentally described. These remarks are partially compared with the effect of particles on point contact. The result of this paper is a better understanding of the solid particle flow in the Hertzian contact region and clarification of the influence of this flow on the surface structure and associated lubricating film thickness, especially for linear contact.
|
|
|
Reverse engineering of an audio mix using neural networks
Čermák, Jerguš ; Mokrý, Ondřej (referee) ; Rajmic, Pavel (advisor)
This bachelor's thesis focuses on the use of neural network algorithms to determine the parameters of signal processors used in the mixing of audio tracks. The thesis presents linear signal processors such as \emph{Gain}, \emph{Pan}, \emph{Filter}, and \emph{Reverb}, which are commonly used to process audio signal and to produce a stereo mix of the audio recording. These processors are subsequently used within the neural network model as layers, implemented using the DDSP library, aimed at predicting the parameters used in the mix, given the knowledge of the input tracks and the target mix. Resultantly, stereo mixdowns were created, and their parameters were estimated using two neural network models. The results were evaluated using both objective measurements and subjective methods (listening test).
|
|
|
Concentration of grease constituents in the EHD contact and its surroundings
Palán, Miroslav ; Čermák, Jan (referee) ; Košťál, David (advisor)
The thesis focused on the study of the effect of thickener particle size and speed on the concentration of grease particles (thickener and base oil) in the contact and its close surroundings. The calibration images were taken on a sandwich module and the experiments were carried out in a ball-on-disk configuration. The distribution of particles in the grease was investigated by fluorescence microscopy, which allows separate observation of the individual particles. The results showed that the particle size of the thickener fundamentally affects its concentration in and around the contact. The larger particle size is found in the lubricant, the higher is it concentration in the contact. The work also shows the effect of changing the velocity on the change in concentration of the individual components and the connection of the transition velocity with the distribution of the components. The work gives a new perspective on the behavior of greases and provide useful knowledge for the development and optimization of greases for different applications.
|
|
|
Analysis of the Problem of a Cyclic Pursuit
Kučerová, Vendula ; Tomášek, Petr (referee) ; Čermák, Jan (advisor)
This bachelor's thesis analyzes the problem of cyclic pursuit. It deals with the characterization of cyclic pursuit problems and describes how the theory of differential equations is employed in this area. The formulation of a mathematical model is emphasized, followed by its exact solution and further analysis supported by graphical visualization of the obtained solutions.
|
|
|
Positioning device for light microscope
Materna, Jan ; Čermák, Jan (referee) ; Vlach, Radek (advisor)
The thesis deals with the design and implementation of a device prototype enabling biaxial tilt and rotation of a sample examined with an inverted light microscope. This device is also adapted for remote control. The work first focuses on the research of possible solutions and then on the design of the entire device, including motorization, control, power supply or working with samples.
|
|
|
.
Průša, David ; Žižková, Nikol (referee) ; Čermák, Jan (referee) ; Šuhajda, Karel (advisor)
In construction practice, microwave radiation is widely used for drying building materials, remediating damp masonry or sterilizing biotic pests that have invaded building structures. Another, albeit less frequent, use may be, for example, in accelerating the solidification of materials and components, where the time required to obtain the handling strength is reduced due to the effect of microwave radiation. The available scientific and technical literature indicates that some materials, such as brick elements, do not change their physical and mechanical properties when exposed to microwave radiation for moisture remediation, although this has not yet been sufficiently verified, and, in contrast, that there is a significant change in properties when microwave radiation is used to accelerate the setting of fresh mixtures, such as those containing a cementitious binder matrix. This thesis builds on many years of research in the area, complements and refines existing information, provides new insights into the mechanical and physical properties of commonly available building materials that have been exposed to controlled microwave radiation, and compares them with reference values. It also provides an opportunity for further experiments that can build on this research. The experimental research was conducted on two independent sets of samples. The first experiment was carried out on a set of clay brick samples, using tests according to European standards, and focused on the effect of microwave radiation on compressive strength and water absorption. The experimental specimens were exposed to moisture followed by exposure to microwave radiation for drying and then compared with reference specimens. The data from these experiments suggest that microwave radiation can be used for the rehabilitation of brick elements and there is no significant change in the resulting mechanical properties with respect to the initial condition. The second experiment was carried out on a set of concrete mixtures, where the curing process was accelerated using microwave radiation, and the mechanical and physical properties obtained were compared with those of reference specimens. The data from this experiment suggest that microwave radiation can be used to accelerate the curing of concrete specimens, thereby obtaining the handling strength in a relatively short time, but a reduction in the resulting strength can be expected compared with reference specimens.
|
|
| |
guest ::
