The contemporary underground mining of raw minerals is more and more associated with geological and mining software packages which support the work of designers from the moment of the exploration of a deposit, determination of its size and quality, geological, hydrogeological and tectonic conditions, by planning the development and cutting of the deposit. Production planning is one of the most important activities carried out in the course of a mining project, because it allows to set specific production results of a mine in relation to a time unit, and then allows for a verification of the degree of completion of the assumed plan. At present, computer-aided design is applicable to daily or long-term output planning taking deposit, qualitative, quantitative and cost constraints into account. In the article, selected forms of ore deposits were presented. On the basis of several dozen boreholes up to 300m in length, an exemplary fragment of the ore cutting model using computer-aided design of mining works was presented. By using modern computer software - ABB MineScape with modular construction, the possibilities of improving the process of development of future exploitation areas have been determined. In particular, the arrangement of boreholes, based on which ones the cross sections were made with, present the exemplary lithostratigraphic thickness of layers, including the location of discontinuous deformations in the form of faults, and an ore bearing zone. For the block model, resources with priority for metal N o. 1 and 2 were calculated. I n the last section of the article, the cutting idea for a shallow ore deposit has been presented. The degree of effective use of the deposit has been analysed for the room and pillar mining method.
The heat supply systems energy efficiency improvement requires the use of increasingly complex methods. The basic ways to reduce heat consumption is by using better thermal insulation, although they have more and more limited possibilities and need relatively large financial outlays. Good effects can be achieved by the better heat source adaptation to the conditions of a specific facility supplied with heat. However, this requires research that identifies the effectiveness of such solutions as well as the tools used to describe selected elements of the system or its entirety. The article presents the results of tests carried out for a gas boiler room supplying heat to a group of residential buildings. The goal was to build a model that would forecast the day range in which the maximum gas consumption occurs for a given day. Having measurements of gas consumption in subsequent hours of the day, it was decided to build a forecasting model determining the part of the day in which such a maximum would occur. To create the model the random forest procedure was used along with the mlr (Kassambara) package. The model’s hyperparameters were tuned based on historical data. Based on data for another period of boiler room operation, the results of the model’s quality assessment were presented. Close to 44% efficiency was achieved. Tuning the model improved its predictive ability.
In the research on historic, composed green areas various computer technologies are applied, including among others reconstruction ideograms and virtual spatial models. They are created on the basis of historical cartographic materials, among which Prussian maps Urmesstichblatts and Messtischblatts deserve special attention as they provide extraordinarily useful and often otherwise unavailable information concerning the system of spatial composition.
The article presents a method of procedure on the example of selected research objects. Such studies are extremely useful in the process of research, analyses and documentation of the authentic state of historical sites. Moreover, they provide a significant material for further analyses concerning revalorisation and creation of the cultural landscape.
The article will consider research directions on a social history of disability based on the social and the human-rights models of disability, as well as the concept of disability included in the UN Convention on the Rights of Persons with Disabilities. The article contains the basic methodology of historical research on the subject, the main research fields, and an overview of primary sources. In addition, the periodisation of the subject was introduced.
The mathematical modeling of mineral processing is a very complex task because of random character of comminuted materials. However, it allows applying of standard laws of mass preservation and mass transport. The basic method of description of comminution processes is determination of particles size distribution curves for products. In the paper, the concept of applying so-called censored distribution functions was presented, what means equations of exponential, Weibull, log-normand logistic distribution functions as the basis of crushers work description (formulas 1, 2, 3 and 4). The censoring of distribution functions is being realized through acceptation of maximum particle size dmax and the shape of them depends on shape and scale parameters. The joining of technical parameters of comminuting devices with parameters of equations describing distribution functions of products allows creating of satisfying models of comminution processes. After application of general forms of separation curves the description of sieving processes is possible (equations 6a and 6b) and then also of comminution systems. The optimization of aggregates production may be based on introduction of goal function determining profit dependably on amount of individual assortments. In case of analysis of comminution systems (formulae 10) in preparation of feed to beneficiation the goal function should be based on levels of useful minerals exposure in individual fractions. The paper shows the possibility of simulation of comminution processes course leading to determination of optimal conditions of systems containing comminution and sieving processes. Furthermore, the necessity of creation of empirical models for grinding processes was shown as they would be the compensation of models being result of heuristic analysis of phenomena. Also, the elementary rules of selection of models forms and their modifications based on justification of relations between distribution function parameters and basic technical parameters of devices as well characteristics of comminuted materials were discussed. The paper is the introduction to further research of general approach to joining grained materials characteristics with comminution effects.
The aim of the paper is to discuss the existing CLIL models with respect to how they are used by teachers in Polish lower–secondary education. Throughout the paper a general situation in the system of education concerning bilingual classrooms is depicted with the focus on four CLIL models traditionall used in contemporary schools. The overall objective is to analyse the popularity of languages employed as the medium of instruction in bilingual provision, the subjects whose content is imparted through the medium of a foreign language as well as the four major curricular models themselves developed and implemented for the needs of bilingual programmes in the Poland.
The paper presents historical concepts and paradigms of the institution of university as well as its present and future models.
As a starting point, the origin, structure and function of the medieval university are discussed; then, four basic concepts of university formed in the 19th century are given, namely the German model of Wilhelm Humboldt and Johann Fichte, the English model of Cardinal Newman, the American model formed aft er foundation of the John Hopkins University and the French model – the Napoleonic model ofuniversity.
What follows is an analysis of the changes and evolution of universities in the 20th century. It is indicated that the essence of today’s university is composed of the following activities: didactics, research and professional training. A great significance of general and formal education is also emphasized. Th e priority is given to practising basic disciplines at universities and the significance of the humanities for general education of students, including philosophy, theology and ethics is stressed.
The author is warning us against single-discipline education in a situation when all contemporary problems, whether economic, political, social, ethical or technical, can only be solved on the interdisciplinary basis via cooperation of experts in different fields. The gap between visions of the world shaped by natural sciences and the humanities should be gradually bridged. To this end, a paradigm of the future university is put forward. The paradigm should provide for cultivation of the values derived from the Classical University rooted in the Greco-Roman and Christian tradition, mathematical exactness of scientific research and quality professional training of the Positivist University, as well as the ecological and holistic vision and education of the youth, in a spirit of tolerance of the Postmodern University.
The paradigm of the university of the future should encompass three significant elements, i.e. the mission of a contemporary academic school, the conditions in which it is functioning and the rules it should follow. The paper indicates that, though destined to an ongoing change, the mission of universities for centuries has featured the same components, namely intellectual and ethical education of the youth and scientific research. The contemporary university should act as “the eyes of the world” that perceive its main problems and provide guidance in solving them.
The contemporary university must duly take into account the external conditions, namely globalisation, multiculturalism, ecological threats, rapid communications and technological progress, a growth of negative social phenomena such crime, moral degradation and terrorism; a growing infl uence of the media on life of societies, anti-intellectualism, relativism and radical individualism triggered by the Post-modem era. The rules that a contemporary academic school should act in accordance with are given as follows: a quest for the highest standards in didactics, research and other activities; full freedom of scientifi c research; a focus on discovering the truth and sharing it with others; ethical responsibility of scholars and university professors; the spirit of duty in education; forming amicable and stable academic communities; partnership in cooperation with other scholars and universities; aiming at the integration of Christian knowledge and faith.
The paper ends with a citation from Pope John Paul’s II. address to the chancellors of all Polish academic schools in 1997, in which he stressed the role of ethical sensitivity of scholars today, owing to which the bond may be maintained both between the True and the Good and the freedom of scientific research and ethical responsibility for its outcomes.
The paper presents the idea of a prosumer energy cloud as a new service dedicated to electricity prosumers. The implementation of the cloud should generate a number of benefits in the following areas: settlements between prosumer and electricity supplier, the development of distributed energy sources in microprocessors and the development of e-mobility. From the prosumer point of view, the proposed idea of a prosumer cloud of energy is dedicated to the virtual storage of energy excess generated in the micro-installation. Physical energy storage in the cloud means recording the volume of electricity introduced into the electricity system from the prosumer’s microprocessors. It is assumed that the energy equivalent to the volume registered in the prosumer cloud can be used at any time at any point in the network infrastructure of the National Power System. Any point of network infrastructure shall be understood as any locally located point of connection of an electricity consumer provided with access authorization. From the point of view of the power grid operators, the idea of a prosumer energy cloud is a conceptual proposition of a service dedicated to the new model of the power system functioning, taking future conditions concerning the significant development of prosumer energy and e-mobility into account. In this concept, electricity would be treated as a commodity only to partial physical storage and above all to trade. In this model a key aspect would be virtual energy storage, that is, the commercial provision by the cloud operator (trading company) of any use of the electricity portfolio by its suppliers. It should be stressed, however, that in the prosumer’s energy cloud functioning, a significant factor would be the cost of guarantees of the use of energy by prosumers at any time and point of connection to the network. This results in the need of taking the presence of certain market risks, both volumetric and cost incurred by clouds operator, which can be minimized by passing a portion of the accumulated volume of generated energy to the cloud operator into account. It should be emphasized that this article presents the first phase of the development of the concept of prosumer energy cloud. However, it is planned to be expanded by the following stages, which include the possibility of controlling and supervising the operation of prosumer installations such as: sources, receivers and physical energy stores, e.g. home energy storage or batteries installed in electric vehicles. Ultimately, it is assumed that the proposed prosumer energy cloud will be outside of the storage of energy (virtual and partly physical) and that aggregation of prosumer resources will create new possibilities for their use to provide a variety of regulatory services, including system ones.
Bełchatów lignite deposit is located in the central partof Poland in the tectonic Kleszczów graben. It is dividedinto several parts, which are mining fields: Kamieńsk area (eastern part of the deposit), Bełchatów area (central partof the deposit) and Szczerców area (western part of the deposit). The subject of this study was the Belchatow area.The main issue of the investigations was the dependence of local, regional and global, horizontal variability of selected lignite qualitative parameters (moisture, ash content, calorific value and sulfur content in the as receivedstate) is a function of viewing direction. There was applied the geostatistical analysis of the lignite variability parameters with use of semivariograms.
The researches which were conducted at different scales of observation: in the locale scale – in small field size8 ́8 m called experimental area (local analysis), in larger homogeneous separated parts of the Belchatow area(regional analysis) and in the whole Bełchatów area scale (general analysis). The results proved the visible anisotropy of variability mine lignite parametres. Anisotropy structure observed in regional and global scale isconnected with tectonic structure of the Bełchatów Graben. The detailed studies show the variated level of anisotropy observed in different areas of Bełchatów field.
However, no dependence of the relative level of ash and total sulfur content anisotropy on the environment of sedimentation of the main coal deposit in different parts of the Belhchatów field has been observed. Both parameters characterize with strong or medium anisotropy level in examined fields. Moreover, anisotropy is alsovisible in the local scale. Conducted researches confirmed the thesis that zonal anisotropy is prevalent kind of anisotropy in the regional scale. In the range of the whole deposit the total sulfur content showed zonal anisotropy,whereas the ash content revealed geometric anisotropy
In the article, the topic of mentalization as the ability to attribute mental states to oneself and others is considered. The author concentrates on the aspect of the mental states in different approaches to mentalization. She proposes that the inclusion of various mental states is justified, although it induces some difficulties. In the conclusion, consequences of applying current conceptions and using them to elucidate the variety of mental states are presented.
The article pres ents digital analysis techniques for the cityscape and structure of the city to examine multifaceted impact of tall buildings. Methods presented enable analysing visual impact (VIS), planning of protection for strategic vistas (VPS) and examining of impact on public space (several methods, including Negative-3D). The research was carried out under the 2TaLL Project: Application of 3D Virtual City Models in Urban Analyses of Tall Buildings, implemented in 2013-2016.
Hydrological modelling uses modern computational methods to simulate local and regional water circulation systems. How does this work, and what benefits does it bring?