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Tytuł:
Autodistributive n-groups
Autorzy:
Dudek, W. A.
Powiązania:
https://bibliotekanauki.pl/articles/745960.pdf
Data publikacji:
1983
Wydawca:
Polskie Towarzystwo Matematyczne
Opis:
The article contains no abstract
Źródło:
Commentationes Mathematicae; 1983, 23, 1
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testing dust control preparation with respect to mine employee exposure to inhalling chemical agents
Autorzy:
Orszulik, E.
Dudek, W.
Powiązania:
https://bibliotekanauki.pl/articles/92200.pdf
Data publikacji:
2013
Wydawca:
Główny Instytut Górnictwa
Tematy:
air dustiness
chemical agents
hazard
air dust reduction
zapylenie powietrza
substancje chemiczne
niebezpieczeństwo
redukcja zapylenia
Opis:
This paper presents the results of tests used in dust hazard prevention for air-water spraying devices in collieries. The purpose of the tests was to evaluate mine employees’ exposure to inhalling chemical agents when the ZWILKOP ZW-10 preparation is used. The paper presents the results of the measurements of concentration, in a mine atmosphere, of the following chemical agents: hazardous substances 2-(2-butoxyethoxy)ethanol and 2-ethylhexan-1-ol, constituting ingredients of the preparation at mine employees’ workstations. The tests were performed during work related to the mining of coal in inclined drift C31, seam 415/1-2 on the premises of “Borynia-Zofiówka-Jastrzębie” Hard Coal Mine, Jastrzębie-Zdrój, Poland , using the TELESTO mist systems. Using aqueous solutions for the preparation at concentrations of 15 and 20‰ causes no exceedance of the allowable mine air concentrations for the chemical agents tested.
Źródło:
Journal of Sustainable Mining; 2013, 12, 4; 14-17
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cloud computing support for the multi-agent robot navigation system
Autorzy:
Dudek, W.
Szynkiewicz, W.
Winiarski, T.
Powiązania:
https://bibliotekanauki.pl/articles/385276.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
robot navigation system
cloud computing
service robot
Opis:
This paper presents a navigation system structure for mobile service robots in the agent-based distributed architecture. The proposed navigation system is a part of the RAPP framework. The RAPP framework is an open-source software platform to support the creation and delivery of robotic applications, which are expected to increase the versatility and utility of robots. All key navigation tasks are defined and divided into separate components. The proper allocation of navigation components, in the fouragent structure of the RAPP infrastructure, enables highdemanding computations offloading and was the main goal of this work. Navigation system components were implemented using ROS framework. Experimental results for the NAO robot executing risks detection task proved the validity of the proposed approach.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2017, 11, 2; 67-74
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic Moment and Electronic Structure of Amorphous Alloys of the Type Fe$\text{}_{80-x}$TM$\text{}_{x}$B$\text{}_{20}$
Autorzy:
Nowakowska, A.
Dudek, W.
Oleniacz, J.
Zych, W.
Powiązania:
https://bibliotekanauki.pl/articles/1931839.pdf
Data publikacji:
1994-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
76.80.+y
75.50.Bb
Opis:
Magnetic properties of amorphous alloys of the type Fe$\text{}_{80-x}$TM$\text{}_{x}$B$\text{}_{20}$ (0 ≤ x ≤ 20 at.%, TM = Ni, Co, Mn, Cr, V, Ti) are presented and analyzed. The basis of our research work was the Mössbauer measurements, magnetic saturation measurements, derivative thermo-magnetogravimetry and differential thermal analysis measurements. The magnetic moments are discussed in terms of Friedel's virtual-bound-state model for light TM impurities in strong ferromagnets. Some conclusions about the electronic structure are presented.
Źródło:
Acta Physica Polonica A; 1994, 86, 6; 1027-1036
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Curie Temperature of Amorphous Ferromagnets of Type Fe-TM-M
Autorzy:
Nowakowska, E.
Oleniacz, J.
Zych, W.
Dudek, W.
Powiązania:
https://bibliotekanauki.pl/articles/1967902.pdf
Data publikacji:
1997-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Kj
76.80.+y
75.50.Bb
Opis:
The theoretical Heisenberg model of an amorphous ferromagnet having two magnetic components in the Bethe-Peierls-Weiss approximation was applied to study the concentration dependence of the Curie temperature of the Fe-TM-M alloys (TM - transition metal, M - metalloid). The analysis of the experimental data in comparison with the model calculations was performed.
Źródło:
Acta Physica Polonica A; 1997, 92, 3; 569-576
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Agent-based approach to the design of a multimodal interface for cyber-security event visualisation control
Autorzy:
Kasprzak, W.
Szynkiewicz, W.
Stefańczyk, M.
Dudek, W.
Węgierek, M.
Seredyński, D.
Figat, M.
Zieliński, C.
Powiązania:
https://bibliotekanauki.pl/articles/200534.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
multimodal interface
cyber security visualisation
embodied agent
Opis:
Convenient human-computer interaction is essential to carry out many exhausting and concentration-demanding activities. One of them is cyber-situational awareness as well as dynamic and static risk analysis. A specific design method for a multimodal human-computer interface (HCI) for cyber-security events visualisation control is presented. The main role of the interface is to support security analysts and network operators in their monitoring activities. The proposed method of designing HCIs is adapted from the methodology of robot control system design. Both kinds of systems act by acquiring information from the environment, and utilise it to drive the devices influencing the environment. In the case of robots the environment is purely physical, while in the case of HCIs it encompasses both the physical ambience and part of the cyber-space. The goal of the designed system is to efficiently support a human operator in the presentation of cyberspace events such as incidents or cyber-attacks. Especially manipulation of graphical information is necessary. As monitoring is a continuous and tiring activity, control of how the data is presented should be exerted in as natural and convenient way as possible. Hence two main visualisation control modalities have been assumed for testing: static and dynamic gesture commands and voice commands, treated as supplementary to the standard interaction. The presented multimodal interface is a component of the Operational Centre, which is a part of the National Cybersecurity Platform. Creation of the interface out of embodied agents proved to be very useful in the specification phase and facilitated the interface implementation.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 5; 1187-1205
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pathologic fractures in the course of a primary hyperparathyroidism
Autorzy:
Prashar, A.
Dudek, W.
Prystupa, A.
Kurys-Denis, E.
Krupski, W.
Sawa-Sierocinska, J.
Mosiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/3711.pdf
Data publikacji:
2012
Wydawca:
Instytut Medycyny Wsi
Źródło:
Journal of Pre-Clinical and Clinical Research; 2012, 06, 1
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fatigue testing devices in a complex load condition
Autorzy:
Dudek, A.
Papacz, W.
Powiązania:
https://bibliotekanauki.pl/articles/379235.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
research device
fatigue life
polymer matrix composite
complex state of load
urządzenie badawcze
trwałość zmęczeniowa
kompozyt polimerowy
złożony stan obciążeń
Opis:
Purpose: The article presents an overview of fatigue testing devices for polymer composites in a complex load condition. This paper presents physically existing devices and which are in the design phase. Also presented are own concepts of the construction of such devices. The analysis of each device was completed with a description of its advantages and disadvantages. There are various constructor approaches to the problem of fatigue testing. The choice of the device depends on the research program adopted for implementation. Design/methodology/approach: The article presents the comparative analysis of individual devices. The authors presented their own proprietary designs of machines for fatigue tests in a complex load condition. Findings: It was found that the selection of the machine should provide restoration of real working reconstruction of the tested object. Originality/value: Specialist research machines are very expensive. Knowledge about technical solutions and potential capabilities of fatigue testing machines, and about the availability of such devices, allows for the best adjustment of the research program and the optimization of their costs. For designers of new machines, the submitted compendium of solutions may provide inspiration for improvements in the own constructions of subsequent generations of such devices.
Źródło:
Archives of Materials Science and Engineering; 2019, 95, 1; 20-30
1897-2764
Pojawia się w:
Archives of Materials Science and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane aspekty zrównoważonego użytkowania lasu w nawiązaniu do programu zrównoważonego rozwoju - przykład Polski
Selected aspects of sustainable forest utilization with regard to the sustainable development program - Polish example
Autorzy:
Dudek, T.
Zięba, W.
Powiązania:
https://bibliotekanauki.pl/articles/986663.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
gospodarka lesna
gospodarka zrownowazona
uzytkowanie lasu
uzytkowanie zrownowazone
pozyskiwanie drewna
uzytkowanie rekreacyjne
rozwoj zrownowazony
Polska
sustainable development
forest recreation
timber harvest
ecosystem services
paradigm
Opis:
The paper presents the ideas of sustainable development with regard to the specific forest issues and management of its resources. We consider two main directions of forest use, which have the greatest impact on the condition of forest environment, i.e. logging and recreational use of the forest. This confrontation shows how effective the instruments of sustainable development are in collision with, on the one hand, the pragmatic−economic issue of profitability and a specific profit from logging, and, on the other hand, with the autotelic tourist exploration of the forest. The aim of the paper was to discuss selected aspects of sustainable forest use with regard to the sustainable development program and to identify problems, which modern forest management (forest utilisation) faces as a result of society’s expectations and the possibilities of today’s forestry in Poland. The example of Poland shows that there is a full understanding of the need to preserve the forests in the landscape, which was reflected in the form of legal acts and adopted international regulations for sustainable forest management (most forests in Poland have PEFC and FSC certificates). However, considering forest use as one of the main branches of forest management, there is still a large deficit of pro−ecological logging technologies in Poland, especially from difficult mountain areas (about 150 cableways missing), which is largely due to economic factor. The other problem of sustainable forest use in Poland is still low social awareness of the consequences of negative human impact on the forest ecosystem, which is manifested, i.e. littering in forests. Garbage is left both during leisure in forest as well as brought in larger quantities creating so−called wild dumping sites frequently containing also hazardous waste. Another problem of contemporary forest use is the maintenance of durability of forest ecosystems in recreational and tourist areas, especially protected areas, and above all in national parks, most of which in Poland have a forest character. The scale of threat to forest sustainability is incomparably higher here than in economic forests, which results from the large number of visitors in the national parks.
Źródło:
Sylwan; 2018, 162, 06; 469-478
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 37

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