Milan Turčáni

Usage analysis in e-learning system for healthcare

Education and possible further studies have become a rather demanding investment. At the time of imperfect technology, i.e. technology of the previous period, it was a very difficult and doubtable task. But, is an ordinary use of new technologies a formula for the solution? We shall try to adequately answer this question. In our contribution we shall introduce educational activities (e-courses) based on cooperation and experimentation within the combined form of education. All presented information was implemented and verified in the combined forms of education. The authors present a detailed analysis of the user log-on data, on which we can better understand the behavior of the student in an electronic learning environment.

Modelling, simulation and monitoring the use of LabVIEW

The article deals with the issues of modelling of loading of a computer processor using LabVIEW. In the initial part of the article the authors deal with the definition of basic terms in the area of modelling and simulation of processes. In the second part, methods of verification and validation of models are presented. The article describes the modelling environment LabVIEW, creation of virtual instruments, methods of planning and the proposal of processes, as well as distant administration of the processes. In the given environment authors designed a virtual instrument to monitor the loading of processor. The application can be used as a diagnostic tool for the tuning of processes, demanding as to calculation and memory. The application can also serve for fast processor temperature detecting. The created application can be set on in the real time in the most frequently used types of computers with up-to-date platform of processes.

Possibilities of Modelling Web-Based Education Using IF-THEN Rules and Fuzzy Petri Nets in LMS

Basic requirements, which are imposed on LMS (Learning Management System) from the point of view of the needs of a teacher, are to present the contents of instruction, manage the instruction, communicate with students, motivate them to study, observe their progress and evaluate them. The article deals with an opportunity to implement fuzzy logic into web-based education using the created IF-THEN rules and modelling in Petri nets. By an application of fuzzy logic into Petri nets there arises a strong tool for modelling teaching processes, mainly thanks to the easy understandability and sophisticated mathematical setup, supporting a rather simple design of educational activities managed by LMS, for the compendious modularity of solution and robustness of the design.

Modeling of data security in cloud computing

The paper describes the modeling design of data security in Cloud Computing. Data security can be defined as confidence and integrity maintenance of data processed by an organization. In the paper, dealing with data security in all layers of cloud computing is discussed. The standard cloud storage uses three-level data security model in cloud computing which can be extended by a forth level responsible for the data integrity check. The model of data security in cloud computing was designed as an expansion of the present standard use of data storage model in cloud computing. The paper presents the design of a four-level data security model in cloud computing within which by the use of Petri nets it describes each part of data security in cloud computing.

Design and Creation of a Universal Model of Educational Process with the Support of Petri Nets

The paper deals with the design and realization of the model of educational processes by means of Petri nets in the managerial educational environment (LMS-MOODLE). It focuses on the effectiveness and employability of such tool for the creation of models. Based on the created educational models in Petri nets we are able to verify and simulate individual processes, which are carried out during the passage of the student through the e-course in LMS. The realized model can serve as a prototype for the creation of other electronic courses in the virtual educational environment. We can make oneself certain of effectiveness of the created model by evaluating the obtained relevant data from the questionnaire filled in by the students after finishing the passage through the e-course, but also from the modified log files of observed e-courses. We can thus find certain rules of behaviour of applicants in the e-course by means of the usage analysis and compare them with the process models created by us. By means of such comparisons we shall be able to eliminate all interfering elements from process models of e-courses, thus making the other created e-courses more effective and more attractive.

The influence of control methods in technological process to save electrical energy

The development of computer technology has led to new modern management methods in the work experience. Evidence of this can be found in developments such as AC (adaptive control), robust control and, most clearly, AI (artificial intelligence) and expert systems. It is important to prefer regulator adaptation with minimal overshooting and speed and stability control for meeting criteria of technological process. This article describes one of the possibilities for finding PSD controller coefficients to reach the best quality control in comparison with standard procedures. It is important to prefer regulator adaptation with minimal overshooting, speed and stability control for meeting criteria of technological process. Here is one of the possibilities to effectively find the PSD controller coefficients to reach the best quality control in comparison with standard procedures.

Fuzzy control rules base design

Problems with continual processes modeling are apparent upon solving multilevel control systems, where, besides an extensive procedure level of control, there exists another level of control responsible for a continuous optimization of the process. It is natural that it is necessary to improve quality of any production technology in a complex way, by means of replacing the technology itself, as well as by continuous optimization of operation, upon which it is inevitable to exploit not only exact theoretical means, but also practical experience, or heuristic procedures from the level of dispatcher control. It is just here, where new opportunities of using fuzzy controller are opening, as a compensation for a man in control and optimizing processes. Besides the above mentioned possibilities, the exploitation of fuzzy controllers in the practice is very widespread. For example, steam turbines, chemical reactors and cement operations control has successfully been solved. Using fuzzy controller for the acceleration of neurone networks learning can serve an example. The article deals with the issue of rules base design in the environs of Matlab.

The possibilities of using Petri Nets for realization of a universal model of educational process

This paper summarizes the results obtained from the design, creation and implementation of the Universal Model of Educational Process with the Support of Petri Nets. Based on the created educational models in Petri nets we are able to verify and simulate individual processes, which are carried out during the passage of student through the e-course in LMS. Universal model was gradually implemented at the Department of Informatics (Faculty of Natural Sciences, Constantine the Philosopher University in Nitra, Slovakia) from the academic year 2009/2010. The module is used in technically oriented subjects, specifically in the field of applied informatics. The results obtained from the use of the module are listed in the debate and point to the fact that in this way we can thus find certain rules of behavior of applicants in the e-course by means of the usage analysis and compare them with the process models created by us. By means of dry comparisons we shall be able to eliminate all interfering elements from process models of e-courses, thus making the other created e-courses more effective and more attractive. Universal Model of Educational Process with the Support of Petri Nets so contributes to the development of skills and abilities of students without they are aware of this fact at all.

Proposal for Spatial Monitoring Activities Using the Raspberry Pi and LF RFID Technology

The paper describes a new way of activity monitoring of small rodents by the use of Raspberry PI and RFID. The created system deals with complex monitoring, record and acquisition of new entries from spatial activity. Raspberry PI is a full-valued micro-PC with an operating system based on Linux which communicates and controls RFID reader working at the frequency of 125 and 134 kHz. It is needed to read LF RFID chips. Monitoring station preserves transmitter scanning by a programme created in Java and RFID chip reader and sending entries into relational database. The created database is on the central Raspberry PI to which other Raspberry PI monitoring stations have access through WiFi net or LAN net. It is possible to access the central PC by a remote management. The created system is variable, compact and offers wide possibilities of spread, and the last but not least, the system is a cheap alternative of the already existing systems.

Complex Design of Monitoring System for Small Animals by the Use of Micro PC and RFID Technology

The paper describes a complex design of monitoring system handling created by the use of microcomputer Raspberry PI and LF RFID technology for the needs of monitoring and exploring the behavior of small terrestrial mammals and of selected species of birds. Similar systems already exist, but they are demanding and financially not affordable. To create such a system, low-cost products have been used which are easily modifiable, modular and expandable by measuring other activities. The paper concentrates on RFID/PIT technology. PIT tags are a useful tool to identify and follow individuals within a large population to monitor movement and behavior. Tags transmit a unique identifying number that can be read at a short distance that depends on the tag size and antenna design. Passive RFID tags are inductively charged by the reader and do not have a battery. Tags can remain operational for decades.