During occupational trainings given to Polish employees, one can quite often observe complaining. The instructor can use it for problem-solving or for purification. Thus, complaining plays an instrumental or cathartic function. This has consequences for the entire training process. The aim of the article is to present the phenomenon of complaining during training courses and to discuss its correlation with different variables such as learning results, participants’ mood and the evaluation of the training course. Questions were therefore posed about which function of complaining would be more conducive to the process of learning the material and result in an improvement of the participants’ mood, as well as how the instructor would be evaluated, at the response level, depending on which function of complaining is activated during the training. In order to answer these questions, the authors designed an experiment in which complaining was induced in members of an organization, performing either an instrumental function or a cathartic function. The results show that the most effective strategy is the use of its object as a point of departure for problem solution.
The paper presents selected aspects of dynamic numerical simulations of an orthotropic steel railway bridge loaded by high-speed trains. The model of moving loads was adopted in accordance with the models set out in the applicable standards. The current European code requirements are referred in which the computer calculations of the dynamic response of the structure are the basis for assessing the suitability of the structure to carry high-speed rail traffic ( v > 160 km/h ). In this research the calculations are based on the author's method of generating traffic roads in Abaqus FEM environment. lt is emphasized in the paper that in most commercial FEM codes (including Abaqus), moving loads are not implemented in modules responsible for defining of loads. The author's approach to this issue allowed to obtain results confirming its adequacy. In the longer term, the authors will develop a plan to adapt this algorithm in order to generale traftic loads on bridges discretized as spatial and plane numerical models.
A finite element (FE) model of the straight guideway bridge under monorail train has been built in this research in order to investigate dynamic interactions of the coupled system in the vertical and longitudinal direction. A limited length of the straddle monorail bridge including five continuous spans is modeled in three dimensions by using FE method. A 3D model of the monorail train system, built in the multibody analyzer MSC ADAMS, is assembled over the bridge. The entire model, consisting of the vehicle and bridge subsystems, is numerically analyzed by performing dynamic simulation in time domain. The braking forces between the train tires and guideway beams are activated in the analysis, in addition to the dead weights of the components and the train live loads. Dynamic forces in the tires are obtained for the case of the emergency braking in the system. The reaction forces, appeared in the bridge piers, are reported as the input forces for the purpose of the bridge design.
Mitigation of electromagnetic inference (EMI) is currently a challenge for scientists and designers in order to cope with electromagnetic compatibility (EMC) compliance in switching mode power supply (SMPS) and ensure the reliability of the whole system. Standard filtering techniques: passive and active ones present some insufficiency in terms of performance at high frequencies (HF) because analog components would no longer be controllable and this is mainly due to their parasitic elements. So developing EMI digital filters is very interesting, especially with the embedment of a machine control system on a field programmable gate array (FPGA) chip. In this paper, we present a design of an active digital EMI filter (ADF) to be integrated in a drive train system of an electric vehicle (EV). Hardware design as well as FPGA implementation issues have been presented to prove the efficiency of the developed digital filtering structure.
The authors show how to strengthen the educational power of the museum. Emphasize the historical and contextual variability of the main functions performed by museum, indicate that the location of the museum in the community of the city and broaden the scope of its activities to different communities. Characterized by contemporary models of museum education, along with the arguments for taming the different models of learning both by visitors and museum’s staff. & e article presents two practices, which, in the opinion of the authors are conducive to learning in/and by the museum.
The paper describes a system that utilizes a microprocessor in controlling the clamping force of the band saw teeth against the cutting metals. This control system allows the blades to operate more efficiently, and prolongs the blade life. It also has an influence on the removal of chips from the blade and maintains a constant strength over the blade. The system can operate in the vertical and horizontal position. A highly advanced and powerful microcontroller PIC18F4455 is programmed to operate with feedback from 4 sensors. Additionally system requires the parametrical data on the shape, the profile and the kind of material to be cut, for adjustment the process of cutting. Feedback control is implemented via a collocated force actuator/rate sensors. The control theory is used to develop controllers, which achieve robust stability.
The information technologies for assessing the quality of IT-specialties graduates' training of university by means of fuzzy logic and neural networks are developed in the article. It makes possible taking into account a wide set of estimation and output parameters, influence of the external and internal factors and allows to simplify the assessing process by means of modern mathematical apparatuses of artificial intelligence.
The article focuses on the term “train situation” created by Vyacheslav Kuricin, which is considered a metaphor of the work of the contemporary Russian writer Elena Dolgopyat. The proper analysis of Dolgopyat’s works is preceded by an introduction in which the definition of magical realism and its history in Russia is briefl y presented. The attitude of the Russian literary scholars to this phenomenon is presented as well. Next, the meanings of the figure of train in the writer’s stories are discussed. It is noteworthy that the features of magical realism (specific space-time construction, polyphonic narrative, fantastic elements perceived as something natural) are realized in her texts often through the image of a train. In works in which this picture does not exist, we deal with the „train situation”, which boils down to the combination in the presented world of various aspects of reality, unlimited by matter. The heroes live between different dimensions of reality, and combining into one cohesive whole of various space-times, ways of existence, realistic and fantastic elements allows to see the term of Kuricin also as a metaphor of all magical realism.
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