The Model of the Low Rate Telemetry Communication System for Matlab-Simulink

This article is dedicated to the model of low rate telemetry system, which has been developed for Matlab-Simulink environment. The purpose of this model is a research of the low rate telemetry transmission reliability in those cases where the modulation scheme carrier-subcarrier is used. This modulation scheme is widely used in case of the interplanetary spacecrafts. The main purpose of the model is a research of the effects of AWGN and phase noise especially for very low value of Eb/N0. Effects can be evaluated for the whole transmission system or for its components parts. The model described is very versatile and it can be easily modified or expanded

PUBLIC ADMINISTRATION INTEGRATION IN THE COUNTRIES OF THE EU – THEORY AND PRACTICE OF PRINCIPLES FOR ENHANCING THE PARTICIPATION

Public administration has been influencing society and individual citizens (or just "peopleâ€) since its beginning. In the theoretical or rhetorical as well as practical level, administrative activities were exercised in the way that can be described by principles in the most general (abstract) level. In relation to the values of democracy, the principles that may enhance the participation – it means the democratic character – of decision/policy making should be stressed. Although they may be explicit or implicit part of constitutional document, there practice is often very young and therefore it may be insufficient. The utilization of foreign top-down and bottom-up experience and – particularly with regards to the European integration – the cross-boarder cooperation and benchmarking in this field must be underlined. The paper outlined the theoretical and practical directions.public administration, European integration, DEMO-net, Czech Republic, Political Economy,

The Low Rate Telemetry Transmission Simulator

The presented paper is dedicated to the low rate telemetry transmission simulator. The basic concept of the system uses the carrier (DSB) and subcarrier (BPSK). The research is focused on the AWGN and carrier phase noise influence. Presented system can be extended with the described carrier phase noise model. In this paper, some issues related to the described model are also discussed. For example, the relation between bit error rate for uncoded bit stream and bit stream with differential coding, which is used in the model. Authors prove the using of Costas loops for very low energy per bit to noise power spectral density ratio. The influence of additive white Gaussian noise and phase noise is also investigated

CSM-178 - Learning to Recognise Human Faces

Recognition of human faces is an ambitious problem, being currently attacked by psychologists, cognitive scientists, and - to a limited extent - also by AI-community. Nevertheless, computer programs solving this task are still rare. Most of them rely on the artificial neural nets, which are not used in our approach to the problem. The presented paper reports a successful attempt to extract a reliable set of stable intrinsic features from the images by using edge-detection, boundary grouping, and boundary characterisation. Particular attention is paid to the local properties of the boundaries at junction points. No attempt to attach high-level meaning to the individual features is made. The resulting symbolic descriptions are processed by a simple Machine-Learning program constructing a recognition scheme in the form of a decision tree. In spite of some constraints - frontal head-on view, limited training set - the results, as measured by predictive accuracy, are promising for dealing with larger numbers of individuals

Application of product dioids for dead token detection in interval P-time event graphs

Linear description of interval P-time event graphs using a product idempotent semiring is proposed and applied to dead token detection. The dependence of dead token on initial condition is studied using residuation theory. Finally, the relationship with the spectral theory of matrices over product semirings is discusse