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Co-operation as a process of integration of co-operative individuals or groups, is the desirable state in different kinds of systems. One of the factors conducing to co-operation, as postulated in this paper, can be a threat. On all levels of biological and social integration there are a lot of examples in which a threat itself was a very strong mechanism for inducing co-operation. Higher primate...
In our times the traditional university system was deeply reformed. The reforms aimed at the creation of a logical and politically attractive set-up that would provide for current needs of economy as well as for students' careers. Effects of these reforms were spectacular, especially in statistical terms. Yet, there are severe flaws in the image of imposing expansion of academic education. In this...
In the theory of postliberal democracy, a democratic dynamic leads to a reproducible democratic institutional equilibrium. This in turn leads to a highly democratic institutional equilibrium. It can be assumed that democracies must have the capacity to respond to disturbances and thereby to adapt to the conditions under which they find themselves. From the theoretical viewpoint of nonequilibrium thermodynamics,...
The knowledge and the language of concepts referring to the theory of system and design methodology as the sphere of concepts being mode objective can be applied to a more precise description, analysis and improvement of the methods of the real architectural design process. The consideration mentioned above refers to the possibilities of morphological systems analysis application or some parts of...
Most of managers which concentrate their activity upon functions, tasks, staff and personnel, posts and upon organization structures, have difficulty in understanding the essence of processes. The change of perspective, from functional problem oriented thinking (production, marketing, logistic, etc...) to perceiving the organization in categories of information flow processes, is the fundamental novelty...
We are looking for answers to the questions: what is information, what is an information system? Scholars and scientists tray to find an answer to such questions and formulate various theories of information and theories of information systems. Cognitive currents of communication theory intiated by Wiener, Shannon and by language semiotics are not significantly cultivated neither in science and practice...
In the paper we present a transdisciplinary metamodel, or language, to understand the general dynamics of self organizing systems. This conceptual tool can be used to interpret the emergence, evolution and functioning of natural systems of different sorts: physical, biological, ecological, social or cognitive. We show that the evolution of systems from their emergence, through their possible complexification,...
In the article a system for determining the state of load of the supporting structure of big engineering earth moving machines is presented. On the example of surface mining machines, a conception of the construction of an automatic measurement and acquisition system is described as well as the results of investigations being carried on. An illustration of these investigations are courses of orthogonal...
Systemic investigations concerning the degradation of properties of materials submitted to a long-term operational use have been carried in Poland. That research work results directly from the needs of power stations and brown coal mines. Installations and machines of these large and important enterprises are exploited already for several scores of years. On this account exploiters are faced with...
General relation between radiation intensity of heat sources that are the diagnosed subsystem and the temperature being registered by means of thermovision cameras that are an element of the diagnosing subsystem. The presented results of experimental examinations which are an illustration of the possibilities and constraints of thermovision in monitoring the technical state of machines and installations...
Machine degradation is a long-lasting process concerning its material structure, components and connections. Loss of machine operation ability is due to failures caused by wear and tear, fatigue, corrosion, overloading, material ageing and many other destructive processes. The role of safety in degradation theory is adding in exploitation planning so that consequences undesired (hazardous) events...
In this article, the need for an evaluation of the reliability (durability) of machines in the phase of their designing is argued, and a method is formulated that permits to perform such evaluations for sliding friction nodes (pairs). The prognostic method is based upon the so called generalized model of wearing where the tribotechnical properties of materials describe two complex constants: K, x...
The problem of degradation of machines or devices constituting the technical systems, and particularly degradation of their base or their supporting structure, becomes every day a problem that is more and more essential, especially from the economic point of view and from the point of view of operating safety. The problem appears to be of a particular sharpness in the domain of stationary systems,...
A System of Diagnostic Evaluation of Conveyor Belt Degradation. In surface brown coal mining the change of the transport system from railway to belt conveyor transport is to be mentioned. A conveyor belt is destined to support the mechanically handled material and to transport it along the conveyor. A task of the belt is also the transfer of longitudinal forces indispensable to overcome resistance...
The definition of systemic structures is presented. The need of their diagnosing resulting from variety is determined. Diagnosing concerns the state or evaluation of the structure - time-space, dynamical structure and other structures. The basic elements of structures are described, among which results and connections are discussed. The problem of a necessary structural superiority of the diagnoser...
In the article, the fundamental assumptions of strain degradation are discussed on the background of the general approach to the theory of degradation. The measure of the strain degradation is presented, as well as results of exemplary measurements of distortions being a direct consequence of strain degradation.
Extension of a technical system life time belongs to the essential economical and technical problems. To meet the problem it is necessary to develop a method of the system degradation degree assessment and to work out an expert system - a tool which aids the process of the system assessment. The basic problem is how to create a knowledge base concerning the system degradation. In the paper the structure...
A problem in the use of cryptographic mobile agents in the multilevel data warehouse environment is discussed. First, a systematic approach to cryptographic systems is presented. A cryptographic system is a collection of cryptographic primitives and protocols which help to ensure the confidentiality, integrity, and authenticity of data as well as secure key exchange for these primitives. Cryptography...
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