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Tytuł:
Inverse systems of linear systems
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/141424.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
system odwrotny
system liniowy
system dodatni
osiągalność
stabilność
inverse system
linear system
positive system
reachability
stability
Opis:
The concept of inverse systems for standard and positive linear systems is introduced. Necessary and sufficient conditions for the existence of the positive inverse system for continuous-time and discrete-time linear systems are established. It is shown that: 1) The inverse system of continuous-time linear system is asymptotically stable if and only if the standard system is asymptotically stable. 2) The inverse system of discrete-time linear system is asymptotically stable if and only if the standard system is unstable. 3) The inverse system of continuous-time and discrete-time linear systems are reachable if and only if the standard systems are reachable. The considerations are illustrated by numerical examples.
Źródło:
Archives of Electrical Engineering; 2010, 59, 3-4; 203-216
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Probabilistic-fuzzy knowledge-based system for managerial applications
Autorzy:
Rudnik, K.
Walaszek-Babiszewska, A.
Powiązania:
https://bibliotekanauki.pl/articles/407276.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
system kierowniczy
system oparty na wiedzy
system rozmyty
knowledge-based system
fuzzy system
probability of fuzzy events
fuzzy association rules
manager decision
Opis:
The paper deals with an inference system with probabilistic-fuzzy knowledge base as a tool which can help users in analyzing complete uncertainty of real problems in the company using fuzzy sets and probability. In the mentioned system, knowledge is saved in the weighted IFTHEN fuzzy rules, where the weights constitute marginal probabilities of the fuzzy events in the antecedents and conditional probabilities of the fuzzy events in the consequents. Moreover, the paper presents a proposal of the use of fuzzy association rules as a method of automatic knowledge base extraction in the inference system. For this purpose a modification of the PF-Growth algorithm is described. A numerical example is analyzed by using wind speed prediction process. The correct estimation of wind speed, as the potential energy resource, is necessary for control of the wind turbine work and it is important for the localization process of wind turbines, production planning and estimating cost-effectiveness of such investments.
Źródło:
Management and Production Engineering Review; 2012, 3, 1; 49-61
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy storage systems: power grid and energy market use cases
Autorzy:
Komarnicki, P.
Powiązania:
https://bibliotekanauki.pl/articles/141507.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
storage technologies
storage system sizing
storage system operation
storage system management
storage system use case scenarios
storage system integration
Opis:
Current power grid and market development, characterized by large growth of distributed energy sources in recent years, especially in Europa, are according energy storage systems an increasingly larger field of implementation. Existing storage technologies, e.g. pumped-storage power plants, have to be upgraded and extended by new but not yet commercially viable technologies (e.g. batteries or adiabatic compressed air energy storage) that meet expected demands. Optimal sizing of storage systems and technically and economically optimal operating strategies are the major challenges to the integration of such systems in the future smart grid. This paper surveys firstly the literature on the latest niche applications. Then, potential new use case and operating scenarios for energy storage systems in smart grids, which have been field tested, are presented and discussed and subsequently assessed technically and economically.
Źródło:
Archives of Electrical Engineering; 2016, 65, 3; 495-511
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficacy of NegFry decision support system in control of late blight in Poland
Autorzy:
Wojtowicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/65001.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
late blight
control
Polska
Phytphthora infestans
NegFry system
efficacy
Routine system
decision support system
NegFry decision system
Źródło:
Journal of Plant Protection Research; 2003, 43, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The similarity of the water system to the real foam making system
Autorzy:
Grabian, J.
Powiązania:
https://bibliotekanauki.pl/articles/382088.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
foam making
metal matrix composite
water system
wytwarzanie piany
kompozyt metalowy
system wodny
Opis:
Cellular structures are characterized by a number of unique properties that can be successfully utilized in the construction of machines and vehicles. Their low density makes them an ideal filling material for laminated structures. The use of the proper method of foam production affects its structure (e.g. the distribution, openness and size of pores, wall thickness between pores etc.), consequently the material properties are affected. Another important issue is the material itself used for metal foam production, as materials meeting increasingly new requirements are being sought, among which are metal composite materials. This work presents theoretical considerations referring to foam making by comparing the water system to a real foam production system.
Źródło:
Archives of Foundry Engineering; 2011, 11, 3 spec.; 67-70
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automatic Measurement System for Determination of Leakage Flow Rate in Compressed Air Pipeline System
Autorzy:
Dindorf, R.
Wos, P.
Powiązania:
https://bibliotekanauki.pl/articles/221382.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
compressed air system
leakage flow rate
automatic measuring system
Opis:
A new method of indirect flow rate measurement in a pneumatic pipeline system was developed by the authors. The method enables to measure the controlled leakage in a branch line and was used to construct automatic measuring systems auditing the compressed air systems (CAS) piping. In the CAS audit the volume and cost of the leakage in a compressed air pipeline system is evaluated. Based on the authors’ patent, an automatic measuring system (AMS) for measurement of the leakage flow rate in industrial compressed air system piping, was developed. The AMS consists of a measurement device (MD) and a control system (CS). In the measurement device (MD) a novel bifunctional pneumatic proportional control valve is used. The AMS system will be used in the new research project “Mobile laboratory of compressed air system audit” based on the authors’ concept.
Źródło:
Metrology and Measurement Systems; 2018, 25, 1; 159-170
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integrated computer system of management in logistics
Zintegrowany system informatyczny zarządzania w logistyce
Autorzy:
Chwiesiuk, K.
Powiązania:
https://bibliotekanauki.pl/articles/224367.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
zarządzanie
logistyka
zaopatrzenie
dystrybucja
system zarządzania gospodarką materiałową
management
logistics
integrated system
components
integrated platform
computer-aided system
Opis:
This paper aims at presenting a concept of an integrated computer system of management in logistics, particularly in supply and distribution chains. Consequently, the paper includes the basic idea of the concept of computer-based management in logistics and components of the system, such as CAM and CIM systems in production processes, and management systems for storage, materials flow, and for managing transport, forwarding and logistics companies. The platform which integrates computer-aided management systems is that of electronic data interchange.
Celem niniejszego referatu jest zaprezentowanie koncepcji zintegrowanego systemu informatycznego zarządzania w logistyce, a w szczególności w łańcuchach zaopatrzenia i dystrybucji. Ze względu na tak przedstawiony cel referatu zawarte w nim zostaną między innymi: istota koncepcji zintegrowanego systemu informatycznego zarządzania w logistyce, komponenty tego systemu, a w tym: systemy CAM i CIM w procesach produkcyjnych, systemy zarządzania gospodarką magazynową, systemy zarządzania przepływem materiałowym, systemy zarządzania firmami logistycznymi. Platformą integrującą systemy informatyczne zarządzania jest elektroniczna wymiana informacji.
Źródło:
Archives of Transport; 2011, 23, 2; 153-163
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reconfigurable manufacturing system – a new class of manufacturing system
Autorzy:
Prasad, Durga
Jayswal, S. C.
Powiązania:
https://bibliotekanauki.pl/articles/407365.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
reconfigurable manufacturing system
reconfigurability
flexible manufacturing system
flexibility
reconfigurable machine tool
Opis:
Today’s manufacturing environment is highly uncertain, and it is continuously changing. It is characterized by shorter life cycles of products and technologies, shorter delivery times, an increased level of customization at the price of a standard product, increased product variety, quality as well as demand variability and intense global competition. Academicians, as well as practitioners, agree that uncertainty will continue to grow in the twenty-first century. To deal with the uncertainties in demand variation and production capacity a manufacturing system is required which can be easily reconfigured when there is a need at low cost. A reconfigurable manufacturing system is such a type of system. In the present work, the concept of the reconfigurable manufacturing system has been discussed and reviewed. It has been compared with dedicated systems and flexible manufacturing systems. Part family formation and barriers of reconfiguration also have been discussed. This work is an attempt to contribute to the conceptual systematization of the reconfigurable manufacturing system and reconfigurability by synthesizing the vast literature available after a systematic review.
Źródło:
Management and Production Engineering Review; 2019, 10, 4; 37-47
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Can smoke control become smart?
Autorzy:
Węgrzyński, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/231504.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dymoszczelność
system kontroli dymu
system inteligentny
czujnik dymu
bezpieczeństwo pożarowe
smoke control
smoke control system
smart system
smoke sensor
fire safety
Opis:
Smoke control solutions are used to maintain tenable conditions in buildings, enabling evacuation process, rescue operations and reducing the thermal stress on the building structure. For last 50-years the design process of such solutions did not significantly change – a required volumetric capacity is calculated with theoretical and empirical models, and further, mechanical design is prepared to deliver this capacity. In this paper, a new approach – “smart smoke control” is introduced, as a system that adapts the performance parameters based on the momentary measurements of temperature in the building. The system follows the growth and decay of fire in the building, which allows optimization of its mechanical parameters, and provides substantial increase in the performance. This paper provides a discussion on traditional and new concepts in smoke control, and defines areas, in which a paradigm shift must occur, to enable widespread adoption new and more efficient solutions. The paper does also refer to previous proof of concept studies, presenting the preliminary assessment of the performance of a smart smoke control system.
Źródło:
Archives of Civil Engineering; 2018, 64, 3; 201-208
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distributed control systems integration and management with an ontology-based multi-agent system
Autorzy:
Choiński, D.
Senik, M.
Powiązania:
https://bibliotekanauki.pl/articles/201395.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
distributed control system
multi-agent system
software based integration systems
ontology
Petri nets
system wieloagentowy
ontologia
sieci Petriego
inteligentny system kontroli
Opis:
The purpose of this study is to create, analyze and reuse an ontology-based approach during implementation of a multi-agent system (MAS) capable of integrating different elements of a distributed control system (DCS). Ontology is considered as knowledge about a particular domain. It includes static description of the domain’s structure and properties, by means of which it is possible to define the domain’s dynamic states, transitions between those states and conditions of those transitions. Because of that, it is possible to analyze such ontology in terms of modal logic in predicate logic settings.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 5; 613-620
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of Pareto optimisation for tuning power system stabilizers
Autorzy:
Paszek, S.
Powiązania:
https://bibliotekanauki.pl/articles/201080.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Pareto optimization
power system stabilizers
power system
electromechanical swings
Opis:
The paper presents a method for determining sets of Pareto optimal solutions (compromise sets) – parameter values of PSS3B system stabilizers working in a multi-machine power system – when optimising different multidimensional criteria. These criteria are determined for concrete disturbances when taking into account transient waveforms of the instantaneous power, angular speed and terminal voltage of generators in one, chosen generating unit or in all units of the system analysed. The application of multi-criteria methods allows taking into account the optimisation process of power system stabilizer (PSS) parameters, many sometimes contradictory requirements (criteria) without losing ability to reach the optimal solution. A choice of the compromise solution can be made by assuming the values of the weighting coefficients associated with particular components of the vector criterion and determining the equivalent, global criterion. A change of the values of those weighting coefficients in the equivalent criterion does not require, in the case of the Pareto optimization, carrying out repeated calculations.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 1; 125-131
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antilock brake system of trolleybus
Przeciwpoślizgowy system hamulców trolejbusu
Autorzy:
Safonau, A.
Powiązania:
https://bibliotekanauki.pl/articles/140002.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
trolejbus
układ hamulcowy
opóźniacz
układ przeciwpoślizgowy
ABS
bezpieczeństwo drogowe
trolleybus
brake system
retarder
anti-lock braking system
traffic safety
Opis:
The antilock brake system (ABS) was developed, which coordinates actions of auxiliary and working braking systems of a trolleybus. A trolleybus type 321 "Belkommunmash", equipped with the proposed ABS was tested in road conditions. The results of tests confirmed compliance of the trolleybus with requirements of the rules UN EEC No 13. Decrease in slippage of the driving wheels, improved stability, roadability and traffic safety of the trolleybus was noted.
Opracowano przeciwpoślizgowy system hamulców (ABS), który koordynuje działanie dwu systemów hamowania trolejbusu: roboczego i pomocniczego. Trolejbus typu "Belkommunmash 321", wyposażony w proponowany system ABS, był testowany w warunkach drogowych. Wyniki testów potwierdziły zgodność trolejbusu z wymaganiami normy UN EEC No 13. Odnotowano zmniejszenie poślizgu kół napędzanych, poprawę stabilności trolejbusu, lepsze trzymanie się drogi i lepsze bezpieczeństwo w ruchu.
Źródło:
Archive of Mechanical Engineering; 2012, LIX, 1; 21-30
0004-0738
Pojawia się w:
Archive of Mechanical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
System ubezpieczenia społecznego rolników – wybrane zagadnienia
Agricultural insurance system – selected issues
Autorzy:
Sala, S.
Powiązania:
https://bibliotekanauki.pl/articles/2031821.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
agricultural insurance system
agriculture
selected issues
Opis:
The paper presents an analysis of the variation in the number of insured farmers and beneficiaries using the agricultural insurance system in 1991-2015. The current system of farmers’ social insurance did not create good conditions for changes in the agrarian structure of farms or to develop more non-agricultural economic activity in rural areas. It should be emphasized, however, that the Polish agricultural policy assumes that a family farm is a basic entity functioning in agricultural structures, and the contributions of economically active insured farmers, supplemented by a budgetary subsidy, financials of benefits. Considering the issue of social insurance for farmers, it is worth pointing out that since the protection of farm workers it has undergone some evolution, as evidenced by the above data on the change in the number of insured persons in relation to the number of beneficiaries.
Źródło:
Biuletyn Komitetu Przestrzennego Zagospodarowania Kraju PAN; 2017, 267; 89-101
0079-3493
Pojawia się w:
Biuletyn Komitetu Przestrzennego Zagospodarowania Kraju PAN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
System wartosci spoleczenstwa polskiego
VALUE SYSTEM OF POLISH SOCIETY
Autorzy:
Nowak, Stefan
Powiązania:
https://bibliotekanauki.pl/articles/427666.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
DEMOCRATIC VALUES
FAMILY
IDENTIFICATION
MORALITY
NATION
SOCIALISM
SOCIOLOGICAL VACUUM
VALUE SYSTEM
Opis:
The article is devoted to the analysis of value system of Polish society in the 1970s. After establishing that Poles are the 'federation of primary groups united in a national community', the author formulates the sociological vacuum thesis: Poles strongly identify with their family and friends and the next community, they strongly identify with, is nation. In between these two poles the vacuum spreads covering institutions and groups other than family and friends (e.g. professional groups). The author emphasizes frustration as a feature of Polish society, in which axiological standards significantly differ from reality (the examples of the socialist and democratic values support this argument). He contends simultaneously that the possibility of generalizing about value system of Polish society as a whole stems not so much from the lack of internal differentiation in particular clusters of values (such differentiation exists), as from the experience of vast social change that has resulted in the disappearance of previous value formation centers and has not led to the emergence of the new ones.
Źródło:
Studia Socjologiczne; 2011, 1(200); 261-278
0039-3371
Pojawia się w:
Studia Socjologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seru Production System: A Review and Projections for Future Research
Autorzy:
Shih, Yung Chin
Powiązania:
https://bibliotekanauki.pl/articles/2023859.pdf
Data publikacji:
2021-12
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
seru production system
flexible manufacturing system
reconfigurable manufacturing system
production activity control
assembly
disassembly
manufacturing plant control
Opis:
In mid-1992, Japanese consultant Yamada Hitoshi was tasked with modifying the production systems of Japanese companies as the existing configurations at manufacturing plants no longer satisfied unstable demands. He made improvements to the overall production system by dividing the long assembly lines into several short ones called cells or seru. Although of the advantages, it is still unclear about how to manage this new production system, and what variables really promoted the desired benefits. We identify in total 39 articles from 2004– 2020 about the progress of the seru production system, and we observe some possibilities to improve the effectiveness of this type of the production system. The first is the possibility of manufacturing the product in flexible sequence, in which the operations are independent among them. We show through the developed example that the makespan may be different. We noted when converting the in-line production system to one pure seru, the makespan tend to increase. Nevertheless, when analyzing the effectiveness of serus working concomitantly considering splitting the same lot, makespan and the cost may be reduced. And finally, when converting to one of pure serus, the performance may be similar to that obtained when serus working concomitantly.
Źródło:
Management and Production Engineering Review; 2021, 14, 4; 53-70
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł

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