National Repository of Grey Literature 51 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
New trends in internet marketing
Linc, Zdeněk ; Mikeš, Jiří (advisor) ; Peterka, František (referee)
This thesis deals with the topic of new trends in internet marketing. The theoretical part describes the current developments in the areas of Internet marketing display advertising, contextual advertising, SEO, social networks, mobile marketing, discount portals, price graders and describes their benefits to the overall concept of marketing. In the practical part is then discussed in detail testing of Garnier lotion, which was carried out via the Internet. In the practical part of it is used for various points of theoretical knowledge about the behavior of Internet users and is also based on the results analyzed. The practical part will demonstrate the benefits of the Internet for product testing and indicates the direction in which he could take on Internet Marketing.
Interactive media in the Czech Republic
Peterka, František ; Král, Petr (advisor) ; Raška, Ondřej (referee)
This paper is divided into 3 parts. First part defines the interactive media and describes particular types of internet and mobile media. The second part is focused on interesting projects in the Czech Republic, which offer new possibilities of internet and mobile advertising. The last part describes the project www.golfeurope.cz and its starting campaign with using the interactive media.
Experimental and numerical investigation of vibroimpact system with Hertz's contact
Půst, Ladislav ; Kocanda, Lubomír ; Peterka, František
The static characteristic force versisus deformation of teh used hemispheres made of weak elastic material was measured and used as a mathematical model of Hertz's stops. Measured dynamical properties agree with response curves obtained by numerical simulation in the resonance influenced by the strong nonlinearities very well.
Motion of the dynamic impact damper
Peterka, František
Properties of the tuned dynamic impact damper is studied by numerical simulation. Different regimes of the system response on the harmonic excitation is evaluated and regions of existence and stability are ascertained. Specified behaviour as grazing, period doubling, saddle-note and Hopf bifursations are explained.
Most important results of the investigation of the impact oscillator dynamics obtained during finished projects GA CR and COST
Peterka, František
The investigation of the dynamics of oscillator with soft impacts explained the development of non-linear phenomena, when the oscillator transits from the linear one into the oscillator with rigid impacts,described by the Newton elementary theory. Two symmetrically arranged oscillators was studied theoretically and using the numerical simulation with the aim of their application in the forming.
Ambiguousness and basins of attraction of the oscillator with soft impacts
Peterka, František ; Čipera, Stanislav
Dynamics of oscillators with soft impacts is characterized, in the comparison with oscillators with rigid impacts, by the existence of subharmonic impact motions, which should be excited by special motion initial conditions. The investigation of such motions was performed using the evaluation of basins of attraction of the oscillator motion regimes. New impact motions were ascertained and general conclusions were formulated.
Oscillations of systems with clearances and prestressing
Půst, Ladislav ; Peterka, František
Mechanical 1DOF nonlinear systems with clearances and prestressing are analysed by means of response curves, gained by numerical simulation. It is shown that response curves of systems with prestressing have smaller amplitudes than those of systems with clearances and have more complicated form. Shape of main resonance peak of system with clearance corresponds to the hardening spring, that of prestressed system corresponds to the softening spring.
Transition from impactless into impact motion in oscillators with soft impacts
Peterka, František
This paper presents new results of the investigation of the oscillator with soft impact and triangle model of impact interactions. Transition between two types of impactless motion is expained and the influence of impact energy losses on the system dynamics in shown. Inverse grazing viburcation is defined and two types of motion with equal impact number are distinguished.
Oscillator with Hertzs model of soft impacts
Peterka, František
Dynamic properties of the mechanical system with one degree of freedom containing soft stop are investigated. Dynamical impact model respects the non-linearity of the restoring contact force between solid bodies as function of deformation according to the Hertz theory. The explanation of the system motion behaviour, when static clearance decreases up to negative values, which express the static prestress, is the main aim of this paper.

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