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    Wyświetlanie 1-43 z 43
    Tytuł:
    Comparison of Selected Strategies of Statistical Quality Control
    Autorzy:
    Worwa, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/409302.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    Statistical Quality Control
    Control Strategy
    Control Effectiveness
    Opis:
    The paper presents the results of a comparative analysis of the two methods of statistical quality control of products. That two methods differ from each other mainly by a way of determining a subset of products subjected to inspection. The first of the two methods, hereinafter referred to as the completely random method, is to draw a certain number of products for control of the entire products population. The second method, called the method of drawing from partitions, is a pre-split across the specific products population into smaller parts, called partitions, and then create a representation (sample) of the products subject to control by drawing the products from each partition. The main result of this study is to determine the conditions for which the effectiveness of quality control methods with drawing from partitions is not less than the efficiency of the method with fully random drawing, whereby the efficiency criterion is the likelihood of the event, consisting in the fact that there is at least one incorrect product among the drawn products. The considerations were illustrated by numerical examples, designed to compare the effectiveness of the analyzed methods of quality control.
    Źródło:
    Research in Logistics & Production; 2015, 5, 4; 337-346
    2083-4942
    2083-4950
    Pojawia się w:
    Research in Logistics & Production
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design of Optimal Noise Hazard Control Strategy With Budget Constraint
    Autorzy:
    Monazzam, M. R.
    Fard, S. M. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/90404.pdf
    Data publikacji:
    2011
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    noise control strategy
    noise hazard
    optimization
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2011, 17, 4; 463-464
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling concept of NxM matrix converter under periodic control for dynamic states
    Autorzy:
    Sieńko, T.
    Sobczyk, T. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/141505.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Matrix converter
    control strategy
    symmetrical components
    equivalent Scheme
    Opis:
    This paper presents a concept of an NxM Matrix Converter (MC) modeling under periodic control strategy patented in Poland. This strategy allows to change an Nphase input system of voltages and current with the frequency fi to the M-phase output system with the frequency fo, maintaining both systems symmetrical and providing small distortions of voltage and current waveforms at rather high frequencies. In this paper the control strategy is extended for dynamic states when one of the frequencies is changed. Matrix converter equations have been derived using the constrain matrix, which is determined by the switch states. The equations have the hybrid form of a multi-port circuit. To simplify these equations the symmetrical components of input and output voltages and currents have been applied. As a result, rather simple equations have been found. They can be interpreted to an equivalent scheme. All considerations are illustrated using an exemplary 6H3 matrix converter.
    Źródło:
    Archives of Electrical Engineering; 2014, 63, 2; 305-315
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of control strategies against Cydia pomonella (L.) in Morocco
    Autorzy:
    Iraqui, S.
    Hmimina, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/66433.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    assessment
    control strategy
    Cydia pomonella
    insect resistance
    insecticide control
    sexual trap
    Morocco
    Opis:
    The codling moth, Cydia pomonella (L.), is the key pest of apple production worldwide. In Morocco, there is a sustainable presence of codling moth causing considerable damage in apple orchards despite frequent applications of broad spectrum insecticides. For 12 years, sexual trapping and chemical control were performed and the development of the codling moth population was analysed in an orchard which was in the region of Azrou. The efficacy of some insecticides (azinphos-methyl, chlorpyriphos-ethyl, diflubenzuron, thiacloprid, methoxyfenozide, spinosad, and deltamethrin) was also evaluated on neonate larvae and compared with a laboratory sensitive strain. This procedure was done to assess an eventual resistance in Moroccan populations. The action threshold was usually exceeded, leading to an intensive chemical control, with an average frequency of 9 to 13 days. The chemical control was done according to the action persistence time of the insecticides and the trap captures. However, those two parameters are compromised in Moroccan conditions because of the high summer temperatures which disrupt the action of insecticides and exacerbate populations. The pheromone traps may become ineffective and useless. Neonate larvae were resistant to five insecticides out of seven. Such results suggest the presence of a cross resistance in local strains. Overall, the insect resistance, the functioning of the sexual traps, and some insecticides properties (persistence action, pre-harvest interval) are the key factors that could explain the failure to control these moths under Moroccan conditions.
    Źródło:
    Journal of Plant Protection Research; 2016, 56, 1
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of chemical weed control strategies in biomass sorghum
    Autorzy:
    Pannacci, E.
    Bartolini, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/64978.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    biomass crop
    sorghum
    Sorghum bicolor
    herbicide
    weed management
    chemical control
    weed control
    control strategy
    Opis:
    Two field experimental trials were carried out in central Italy, in 2005 and 2006, on biomass sorghum [Sorghum bicolor (L.) Moench] in order to assess weed control efficacy and selectivity to the crop of some pre- and post-emergence herbicides applied at different doses and in different mixtures. All herbicides showed good selectivity to the crop, although postemergence treatments showed higher transitory phytotoxicity effects than pre-emergence treatments, especially when high temperatures occurred after treatments, decreasing the selectivity of leaf herbicides (i.e. MCPA, 2,4-D, bromoxynil and dicamba). Considering pre-emergence applications, terbuthylazine alone against broadleaves or in mixtures at low doses with s-metolachlor against mixed infestations (grasses + broadleaves), seemed to be the best options to obtain a good selectivity to the sorghum and a high weed control level. Aclonifen showed some limits in terms of weed spectrum and could be recommended only against simplified broadleaf weed infestations without the presence of less susceptible weeds, like Amaranthus retroflexus, Portulaca oleracea and Solanum nigrum. Propachlor seemed not to be advisable due to the low efficacy against all the major broadleaf warmseason weed species in the Mediterranean areas. Considering post-emergence applications, all treatments gave quite similar results in terms of weed control, although, the mixture of terbuthylazine + bromoxynil seemed to be the best option due to bromoxinil’s higher efficacy than other foliar herbicides, such as MCPA, 2,4-D and dicamba, which can increase the efficacy of terbuthylazine alone especially under dry weather conditions. There were no significant differences in sorghum biomass between herbicide treatments, although, the more selective pre-emergence treatments showed, on average, a higher biomass yield value than the less selective post-emergence treatments. For these reasons, biomass values seemed to be more related to herbicide selectivity than to herbicide efficacy, especially in cases of scarce competitiveness of weed flora.
    Źródło:
    Journal of Plant Protection Research; 2018, 58, 4
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation and experimental results of hybrid electric machine with a novel flux control strategy
    Autorzy:
    Paplicki, P.
    Wardach, M.
    Bonisławski, M.
    Pałka, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/140694.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    PM machines
    FEM analysis
    experimental results
    control strategy
    field control capability
    efficiency maps
    Opis:
    The paper presents selected simulation and experimental results of a hybrid ECPMS-machine (Electric Controlled Permanent Magnet Synchronous Machine). This permanent magnets (PMs) excited machine offers an extended magnetic field control capability which makes it suitable for battery electric vehicle (BEV) drives. Rotor, stator and the additional direct current control coil of the machine are analyzed in detail. The control system and strategy, the diagram of power supply system and an equivalent circuit model of the ECPMS-machine are presented. Influence of the additional excitation on the performance parameters of the machine, such as: torque, efficiency, speed limits and back-EMF have also been discussed.
    Źródło:
    Archives of Electrical Engineering; 2015, 64, 1; 37-51
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Triple-layer based control strategy for molten carbonate fuel cell - hybrid system
    Autorzy:
    Milewski, J.
    Miller, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/185632.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    strategia kontroli
    control strategy
    solid oxide fuel cell
    off-design operation
    Opis:
    Based on mathematical modelling and numerical simulations, a control strategy for a Molten Carbonate Fuel Cell Hybrid System (MCFC-HS) is presented. Adequate maps of performances with three independent parameters are shown. The independent parameters are as follows: stack current, fuel mass flow and compressor outlet pressure. Those parameters can be controlled by external load, fuel valve and turbine-compressor shaft speed, respectively. The control system is purposed to meet many constraints: e.g. stack temperature, steam-to-carbon ratio, compressor surge limitation, etc. The aim is to achieve maximum efficiency of power generated within these constraints. Governing equations of MCFC-HS modelling are given. An operational line of the MCFC-GT system is presented which fulfils several constraints (temperature difference, cell temperature, etc.) The system is able to achieve efficiency of more than 62% even in part-load operation.
    Źródło:
    Chemical and Process Engineering; 2012, 33, 3; 445-461
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Elaboration of a strategy to control the peach twig borer Anarsia lineatella Zeller in the Sefrou region in Morocco
    Autorzy:
    Asfers, A.
    Blenzar, A.
    Rachdaoui, M.
    Joutei, A.B.
    Houssa, A.A.
    Sekkat, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/66784.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    control strategy
    peach twig borer
    Anarsia lineatella
    tolerance threshold
    Sefrou region
    Morocco
    Opis:
    Trapping by specific sex pheromones initiated in 2009 to monitor three pests, peach twig borer (Anarsia lineatella), oriental fruit moth (Cydia molesta) and plum fruit moth (Grapholita funebrana) revealed the greater importance of peach twig borer in comparison to the others. The results of monitoring the development of larval stages over time and the accumulated degree-days from biofix show that the pest develops five generations per year, one of which undergoes a diapause. In 2009 and 2010 chemical control based on tolerance threshold of 10 males/trap/2 weeks showed unsatisfactory results. With this method, the percentage of affected fruits increased from 6.8% in 2009 to 18.6% in 2010 despite the application of four treatments of organophosphate-based insecticides in 2009 and the application of four treatments in 2010 using active ingredients from different chemical families (pyrethroid, organophosphate and chlorinicotinyl). On the other hand, management of the peach twig borer by the degree-days method tested and planned on the basis of a bifenthrin treatment between 150 to 204 degree-days accumulated from biofix, gave interesting results where the percentage of affected fruits hardly exceeded 0.5% over the four years of study
    Źródło:
    Journal of Plant Protection Research; 2016, 56, 4
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the operation of a switched reluctance motor in the extended constant power range
    Autorzy:
    Korkosz, Mariusz
    Podskarbi, Grzegorz
    Krzywdzińska-Kornak, Krystyna
    Powiązania:
    https://bibliotekanauki.pl/articles/2202546.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    continuous conduction
    control strategy
    extended constant power range
    SRM
    switched reluctance motor
    Opis:
    In this paper, an analysis of the properties of a switched reluctance motor (SRM) 8/6 in an extended constant power range is presented. The typical constant power range to constant torque range ratio is between 2 and 3. In the case of machines designed as an electric vehicle drive, it is important to maximize this ratio. In the case of an SRM, it is possible to achieve this by applying an appropriate control strategy. An analysis of the SRM operation utilizing a modified control algorithm allows control of the maximum value of the motor phase current. As a consequence, using the so-called nonzero initial conditions for the current and flux allows the output power to be maintained in a wide speed range. For the improvement of drive system efficiency, the work of the phase current regulator should be limited to a minimum. The most advantageous work conditions we obtain with single-time current regulator work. Laboratory verification has been performed for selected states of motor work.
    Źródło:
    Archives of Electrical Engineering; 2023, 72, 1; 43--58
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis, simulation and experimental strategies of 5-phase permanent magnet motor control
    Autorzy:
    Mekri, Fatima
    Elghali, Seifeddine Ben
    Charpentier, Jean-Frédéric
    Powiązania:
    https://bibliotekanauki.pl/articles/140704.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    control strategy
    constant torque
    current references
    minimum copper losses
    modeling
    multi-phase machine
    Opis:
    This paper presents a study of control strategies for 5-phase permanent magnet synchronous motors (PMSMs) supplied by a five-leg voltage source inverter. Based on the vectorial decomposition of the multi-phase machine, fictitious machines, magnetically decoupled, allow a more adequate control. In this paper, our study focuses on the vector control of a multi-phase machine using a linear proportional-integral-derivative (PID) current regulator in the cases of sinusoidal and trapezoidal back-electromotive force (EMF) waveforms. In order to determine currents’ references, two strategies are adopted. First one aims to minimize copper losses under constant torque, while the second one targets to increase torque for a given copper losses. These techniques are tested under a variable speed control strategy based on a proportional-integral (PI) regulator and experimentally validated.
    Źródło:
    Archives of Electrical Engineering; 2019, 68, 3; 629-641
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fire management on container ships: new strategies and technologies
    Autorzy:
    Ricci, S.
    Ravikumar, B.
    Rizzetto, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201466.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    fire safety
    container ship
    drone
    CCTV
    fiber optic
    control strategy
    cargo safety
    maritime transport
    Opis:
    Design and construction of container ships follow consolidated requirements, with standard consideration of fire management. Indeed, cargo fires can have important consequence on crewmembers and cargoes, as well as impacting coastal zone and marine environment. Innovative strategies include prevention of events and mitigation of consequences. Digital solutions, providing with situational pictures onboard and around the vessel are fundamental for new fire management solutions, seamless and integrated into the vessel IT infrastructure, according to IMO regulations and the recent EMSA CARGOSAFE Report. The assessment of these solutions requires theoretical evaluation, validation activities in simulated environment and demonstration activities in real environments, with use cases to prove feasibility and benefits. This paper, after a review of traditional preventing and mitigating solutions against fire and an analysis of container ships fires, proposes applicable innovative technologies and operational measures, emerging problems for their potential implementation and requirements for virtual and real tests design.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 2; 415--421
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On fault tolerant control structures incorporating fault estimation
    Autorzy:
    Krokavec, D.
    Filasová, A.
    Liščinský, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/229298.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    linear systems
    fault tolerant control
    fault estimation
    linear matrix inequalities
    H∞ norm
    H2/H∞ control strategy
    Opis:
    The paper provides the minimal necessary modifications of linear matrix inequality conditions for the mixed H2/H∞ control design as well as for the augmented observer-based fault estimation to be mutually compatible in joint design of integrated fault estimation and fault tolerant control. To be possible, within this integration, to design the controller which guarantees a pre-specified H∞ norm disturbance attenuation level, the design conditions has to be regularized using the H2 performance index and, moreover, augmented fault observer must be of enforced dynamics. Analyzing the ambit of performances given on the mixed H2/H∞ design, the joint design conditions are formulated as a minimization problem subject to convex constraints expressed by a system of LMIs. The feasibility of the conditions is demonstrated by a numerical example.
    Źródło:
    Archives of Control Sciences; 2016, 26, 4; 453-469
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on Ships Safety Control System
    Autorzy:
    Han, X. J.
    Meng, X. Y.
    Wang, Z. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/117442.pdf
    Data publikacji:
    2009
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Safety of Navigation
    ships safety
    Control System
    Ships Safety Control System
    Ship Accidents
    Human Factor
    Control Strategy
    Accident Precaution
    Opis:
    The proportion of main reasons of ships accidents to the whole reasons is discussed in the paper. Among these reasons, human factors are in the majority. So a method to prevent wrong orders sent by a navigator is laid emphasis on. On the basis of this, a ships safety control system is studied. The construction and control principle of the ships safety control system, as well as control strategy, implementation method and key technology are elaborated in the paper.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 1; 19-22
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The analysis of overall ship fuel consumption in acceleration manoeuvre using hull-propeller-engine interaction principles and governor features
    Autorzy:
    Zeraatgar, Hamid
    Ghaemi, M. Hossein
    Powiązania:
    https://bibliotekanauki.pl/articles/258468.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    modelling and simulation
    fuel consumption
    hull-propeller-engine interactions
    ship propulsion system
    governor
    control strategy
    Opis:
    The problem of reduction of greenhouse gas emissions in shipping is currently addressed by many research works and related industries. There are many existing and visionary technologies and ideas, which are conceptually defined or practically realised. This goal can be achieved in different ways, and reducing fuel consumption is one of the major methods. In these circumstances, the aim of this study is to analyse the possibility of fuel consumption reduction by using an alternative control strategy for low-speed marine diesel engines which would take into account the interactions between hull, propeller and main engine. For this purpose, a mathematical model including ship hull and propulsion system is developed. A case study is conducted for a ship for which the results of both the ship hull and screw propeller model tests are available. A low-speed two-stroke diesel engine is then selected for the considered ship. Two different governors are included in the model and their parameters are changed to investigate the dynamic behaviour of the system when simulating the forward acceleration mode in calm sea conditions. The research is mainly focused on variations of fuel consumption by the ship passing a certain distance to reach the nominal constant speed. It is concluded that, for a given travel distance, it is possible to save considerable amount of fuel at the expense of slight increase of journey time.
    Źródło:
    Polish Maritime Research; 2019, 1; 162-163
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of organic waste material overgrown with Trichoderma atroviride as a control strategy for Sclerotinia sclerotiorum and Chalara thielavioides in soil
    Autorzy:
    Kowalska, B.
    Smolinska, U.
    Szczech, M.
    Winciorek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/66092.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    organic material
    waste material
    application
    Trichoderma atroviride
    biological control
    control strategy
    Sclerotinia sclerotiorum
    fruit pomace
    Chalara thielavioides
    soil
    Opis:
    The effect of granulated organic waste material overgrown with Trichoderma atroviride TRS25 on the survival of Sclerotinia sclerotiorum and Chalara thielavioides in the soil was investigated. Application of this material into the soil at a dosage of 1% (w/v) reduced the survival of S. sclerotiorum sclerotia to almost zero after 2 months of incubation. The sclerotia were parasitized by T. atroviride fungus multiplied on granulates. The detrimental effect of granulates on Ch. thielavioides was observed after 4 months of incubation. The granulates, with Trichoderma and without the fungus, caused a decrease of the pathogen population in soil. Trichoderma atroviride introduced into the soil as a conidia suspension did not decrease the amount of Ch. thielavioides but the fungus parasitized S. sclerotiorum sclerotia. After the addition of granulated waste material, an increase of bacteria, especially the Pseudomonas group in the soil was observed.
    Źródło:
    Journal of Plant Protection Research; 2017, 57, 3
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Combined cooling, heat and power (Trigeneration) at Offenburg University of Applied Sciences
    Autorzy:
    Gopisetty, S.
    Treffinger, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/363076.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    control strategy
    energy analysis
    modes of operation
    trigeneration
    analiza strategii kontroli
    analiza energii
    tryby pracy
    trójgeneracja
    Opis:
    The energy supply of Offenburg University of Applied Sciences (HS OG) was changed from separate generation to trigeneration in 2007/2008. Trigeneration was installed for supplying heat, cooling and electrical power at HS OG. In this paper, trigeneration process and its modes of operation along with the layout of the energy facility at HS OG were described. Special emphasis was given to the operation schemes and control strategies of the operation modes: winter mode, transition mode and summer mode. The components used in the energy facility were also outlined. Monitoring and data analysis of the energy system was carried out after the commissioning of trigeneration in the period from 2008 to 2011. Thus, valuable performance data was obtained.
    Źródło:
    Environmental Biotechnology; 2013, 9, 1; 25-37
    1734-4964
    Pojawia się w:
    Environmental Biotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A strategy of chemical control of Apera spica-venti L. resistant to sulfonylureas traced on the molecular level
    Autorzy:
    Stankiewicz-Kosyl, M.
    Wrochna, M.
    Salas, M.
    Gawronski, S.W.
    Powiązania:
    https://bibliotekanauki.pl/articles/65897.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    chemical control
    control strategy
    Apera spica-venti
    silky bentgrass
    silky bent grass zob.silky bentgrass
    resistance
    weed control
    sulphonylurea
    molecular level
    Opis:
    Three populations of silky bent grass (Apera spica-venti L.) were tested – one that is susceptible and two that are resistant to sulfonylureas. Th is study assessed the efficacy of control by different herbicides in a pot experiment and estimated the molecular status of resistance to sulfonylureas in analysed populations and its effect on the effi cacy of different chemical treatments. The three most effective herbicide rotation schemes were: 1) chlorsulfuron + isoproturon, ethametsulfuron + metazachlor + quinmerac, chlorsulfuron + isoproturon; 2) prosulfocarb + difl ufenican, ethametsulfuron + quizalofop-p-ethyl, prosulfocarb + diflufenican; 3) diflufenican + flufenacet, quizalofop-p-ethyl, diflufenican + flufenacet. In most cases it was more difficult to destroy 100% of the resistant population from Modgarby where the majority of plants had no mutation in the als gene. In the resistant population from Babin there were signifi cantly more individuals with mutation in the als gene, therefore exhibiting target-site resistance.
    Źródło:
    Journal of Plant Protection Research; 2017, 57, 2
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sky-hook control and Kalman filtering in nonlinear model of tracked vehicle suspension system
    Autorzy:
    Jurkiewicz, A.
    Kowal, J.
    Zając, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/386619.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    continuous sky-hook control strategy
    extended Kalman filter
    military vehicle
    nonlinear model
    semi-active suspension system
    simulation
    Opis:
    The essence of the undertaken topic is application of the continuous sky-hook control strategy and the Extended Kalman Filter as the state observer in the 2S1 tracked vehicle suspension system. The half-car model of this suspension system consists of seven logarithmic spiral springs and two magnetorheological dampers which has been described by the Bingham model. The applied continuous skyhook control strategy considers nonlinear stiffness characteristic of the logarithmic spiral springs. The control is determined on estimates generated by the Extended Kalman Filter. Improve of ride comfort is verified by comparing simulation results, under the same driving conditions, of controlled and passive vehicle suspension systems.
    Źródło:
    Acta Mechanica et Automatica; 2017, 11, 3; 222-228
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A hybrid control strategy for a dynamic scheduling problem in transit networks
    Autorzy:
    Liu, Zhongshan
    Yu, Bin
    Zhang, Li
    Wang, Wensi
    Powiązania:
    https://bibliotekanauki.pl/articles/2172126.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    service reliability
    transit network
    proactive control method
    deep reinforcement learning
    hybrid control strategy
    niezawodność usług
    sieć tranzytowa
    uczenie głębokie
    kontrola hybrydowa
    Opis:
    Public transportation is often disrupted by disturbances, such as the uncertain travel time caused by road congestion. Therefore, the operators need to take real-time measures to guarantee the service reliability of transit networks. In this paper, we investigate a dynamic scheduling problem in a transit network, which takes account of the impact of disturbances on bus services. The objective is to minimize the total travel time of passengers in the transit network. A two-layer control method is developed to solve the proposed problem based on a hybrid control strategy. Specifically, relying on conventional strategies (e.g., holding, stop-skipping), the hybrid control strategy makes full use of the idle standby buses at the depot. Standby buses can be dispatched to bus fleets to provide temporary or regular services. Besides, deep reinforcement learning (DRL) is adopted to solve the problem of continuous decision-making. A long short-term memory (LSTM) method is added to the DRL framework to predict the passenger demand in the future, which enables the current decision to adapt to disturbances. The numerical results indicate that the hybrid control strategy can reduce the average headway of the bus fleet and improve the reliability of bus service.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2022, 32, 4; 553--567
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of the structure of an intelligent locomotive DSS and assessment of its effectiveness
    Autorzy:
    Gorobchenko, Oleksandr
    Nevedrov, Oleksandr
    Powiązania:
    https://bibliotekanauki.pl/articles/1833630.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    intelligent locomotive
    intelligent system
    assessment effectiveness
    control strategy
    train
    inteligentna lokomotywa
    inteligentny system
    ocena sprawności
    strategia kontroli
    pociąg
    Opis:
    The purpose of the article is developing the locomotive structure of intellectual system of support of decision-making and to find a criterion by which to adequately assess different control action to the train. System of decision support for locomotive crew is seen as a complex structure with complex interactions located at a great distance, on-board locomotive systems. The quality of the organization determines the effectiveness of the system as a whole. To solve the problem of creating the optimal structure of the DSS applies the aggregate-decomposition method that involves two steps: decomposition of the problem into a number of subproblems and aggregating the partial results. To evaluate the quality control of a locomotive used the concept of control strategy with specific indicators. Design is developed and structure of locomotive DSS is obtained, taking into account peculiarities of operation of railway transport. To account for not only quantitative but also qualitative characteristics of activity of the locomotive or intellectual systems of decision support, it is proposed to use methods of fuzzy logic. So were able to deduce and calculate the additive criterion of the quality control activities of the intelligent system. Formal indicator of the quality of the train control process using different strategies is received. In the work theoretically grounded definition of the weighting factors for each partial criterion of the quality of train control. Using the dependencies derived, the nature of the influence of the value of partial criteria on the quality of train control in relation to a strategy. The results of the work allow to more accurately simulate the operations of a locomotive crew, which in the future will serve as the basis for the development of autonomous intelligent systems of locomotive control. The developed method is shown to be three main criteria which values the safety, energy consumption, and execution time schedule. However, for more flexible and accurate model, this approach allows to enter additional criteria, and the simplicity of the calculation provides the necessary speed when implemented on on-board locomotive computers.
    Źródło:
    Archives of Transport; 2020, 56, 4; 47-58
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamic programming in constrained Markov decision
    Autorzy:
    Piunovskiy, A. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/970861.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    optymalizacja
    programowanie dynamiczne
    system kolejek
    Markov decision process (MDP)
    constraints
    optimization
    dynamic programming
    myopic control strategy
    queuing system
    Opis:
    We consider a discounted Markov Decision Process (MDP) supplemented with the requirement that another discounted loss must not exceed a specified value, almost surely. We show that he problem can be reformulated as a standard MDP and solved using the Dynamic Programming approach. An example on a controlled queue is presented. In the last section, we briefly reinforce the connection of the Dynamic Programming approach to another close problem statement and present the corresponding example. Several other types of constraints are discussed, as well.
    Źródło:
    Control and Cybernetics; 2006, 35, 3; 645-660
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Factors influencing the hybrid drive of urban public transport buses
    Czynniki wpływające na napęd hybrydowy stosowany w autobusach publicznego transportu miejskiego
    Autorzy:
    Barta, D.
    Mruzek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/409736.pdf
    Data publikacji:
    2015
    Wydawca:
    STE GROUP
    Tematy:
    control strategy
    combustion engine
    hybrid drive
    public transport
    bus
    strategia kontroli
    silnik spalinowy
    napęd hybrydowy
    transport publiczny
    autobus
    Opis:
    The efficiency of each drives is dependent on many factors. Hybrid drives and specially the drives of urban public transport may be affected by other factors given by transport infrastructure or operational conditions. These factors condition the suitable configuration of the individual elements of hybrid drive and the establishment of good control strategy of such drive. The study of influencing factors of the control strategy is the aim of this paper.
    Efektywność poszczególnych napędów jest zależna od wielu czynników. Na napędy hybrydowe, a w szczególności te stosowane w publicznym transporcie miejskim mogą mieć wpływ inne czynniki, wynikające z infrastruktury transportowej lub warunków eksploatacyjnych. Te czynniki warunkują odpowiednią konfigurację poszczególnych elementów napędu hybrydowego oraz ustanowienie dobrej strategii kontroli takiego napędu. Celem niniejszego opracowania jest badanie czynników wpływających na strategię kontroli.
    Źródło:
    Management Systems in Production Engineering; 2015, 4 (20); 213-218
    2299-0461
    Pojawia się w:
    Management Systems in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical study on control strategy of a single cell proton conducting solid oxide fuel cell
    Autorzy:
    Szczęśniak, Arkadiusz
    Powiązania:
    https://bibliotekanauki.pl/articles/41176203.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Warszawska, Instytut Techniki Cieplnej
    Tematy:
    solid oxide fuel cell
    H+SOFC
    control strategy
    numerical simulations
    ogniwo paliwowe ze stałym tlenkiem
    strategia kontroli
    symulacje numeryczne
    Opis:
    The aim of the paper is to examine a control strategy for a single proton conducting solid oxide fuel cell (H+SOFC). The study is based on a dynamic model originating from the steady state reduced order model of H+SOFC. The proposed control strategy is based on a singular PID controller that controls the amount of air delivered to the cathode side of the fuel cell. Additionally, fuel mass flow is correlated with current density to achieve a fixed fuel utilization factor. The concept was tested on typical operating scenarios such as load-follow mode. The study revealed that the singular PID controller is reliable and ensures a safe H+SOFC operation.
    Źródło:
    Journal of Power Technologies; 2022, 102, 4; 1-8
    1425-1353
    Pojawia się w:
    Journal of Power Technologies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design of Optimal Noise Hazard Control Strategy With Budget Constraint
    Autorzy:
    Asawarungsaengkul, K.
    Nanthavanij, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/90824.pdf
    Data publikacji:
    2006
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    noise control strategy
    industrial noise hazard
    job rotation
    optimization
    hałas
    zagrożenia zdrowia
    ochrona przed hałasem
    kontrola bezpieczeństwa pracy
    hałas przemysłowy
    zagrożenia zawodowe
    Opis:
    An analytical design procedure to determine optimal noise hazard control strategies for industrial facilities is presented. Its objective is to determine a set of appropriate noise controls to eliminate or reduce noise levels so that workers’ daily noise exposure does not exceed a permissible level. From a given noise control budget, engineering controls will be firstly implemented, followed by administrative controls, and then the use of hearing protection devices. Six optimization models are developed and sequentially applied to select appropriate noise controls without exceeding the budget. Numerical examples are presented to demonstrate the application of the proposed design procedure.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2006, 12, 4; 355-367
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Should Polish monetary policy go long?
    Czy polska polityka pieniężna powinna kontrolować długoterminowe stopy procentowe?
    Autorzy:
    Hardt, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2053023.pdf
    Data publikacji:
    2020-07-09
    Wydawca:
    Bankowy Fundusz Gwarancyjny
    Tematy:
    COVID-19 pandemic
    monetary policy
    repo operations
    reversal interest rate
    yield curve control strategy
    Pandemia COVID-19
    polityka pieniężna
    operacje repo
    strategia kontroli krzywej dochodowości
    Opis:
    This essay discusses the optimal shape of monetary policy in Poland as the Polish economy faces the COVID-19 pandemic. It starts by discussing possible scenarios for GDP and inflation dynamics in 2020, and next it focuses on monetary policy. It reviews recent moves as taken by the Monetary Policy Council in March and April 2020, and then analyses the possibility of monetary policy in Poland going long by allowing interest rates on long-term repo operations to be lower than the reference rate. In doing so it uses, among others, the idea of reversal interest rate. Although this paper generally supports the idea of Polish monetary policy going long, it also underlines some potential risks of implementing non-standard instruments of monetary policy.
    Esej traktuje o optymalizacji polityki pieniężnej w Polsce w warunkach kryzysu gospodarczego wywołanego pandemią COVID-19. Początkowo rozważane są możliwe warianty wzrostu PKB i inflacji w 2020 r., a następnie skoncentrowano się na polityce pieniężnej. W szczególności omówiono decyzje Rady Polityki Pieniężnej z marca i kwietnia 2020 r., a następnie przeanalizowano możliwości wydłużenia horyzontu tej polityki, w szczególności dzięki utrzymywaniu stóp procentowych długoterminowych operacji repo na niższym poziomie niż stopa referencyjna. W tekście wykorzystano koncepcję reversal interest rate. Mimo, że generalnie Autor popiera wydłużanie horyzontu polskiej polityki pieniężnej, to akcentuje ryzyka związane z wdrażaniem niestandardowych instrumentów tej polityki.
    Źródło:
    Bezpieczny Bank; 2020, 79, 2; 25-30
    1429-2939
    Pojawia się w:
    Bezpieczny Bank
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Control strategy combustion of system with semi – open combustion chamber of spark ignition engines
    Autorzy:
    Leżański, T.
    Sęczyk, J.
    Wolański, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/241853.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    combustion engines
    spark ignition engines
    combustion processes
    new combustion system
    new strategy of combustion control
    Opis:
    The attempts to increase the engine combustion efficiency of the spark ignition (SI) engines have led to development of the new combustion system with semi-open combustion chamber. This system is similar to flame jet ignition systems, which were applied in many production internal combustion engines. The similar pulsed jet combustion system was elaborated by Professor A. K. Oppenheim. In the system developed at Aircraft Engine Department of Warsaw University of Technology (AED) the standard combustion chamber of SI engine was divided on prechamber and main combustion chamber using partition. The ignition in prechamber is more reliable and repeatable but total burning time in the prechamber and main combustion chamber is shorter than in standard combustion chamber. The principal problem of efficient operation of this system and obtaining of the required performance is securing the relevant control strategy. The performances of this system are dependent from: the rate of this prechamber volume to total combustion chamber volume, the orifice diameter in a partition, the ignition place and the ignition advance angle (ignition timing). Among these parameters the ignition timing only may be varied in the continuous manner during the engine operations without of the engine disassembling. Therefore constant values separate parameters (prechamber volume, orifice diameter, ignition place) should be selected in comprehensive, time consuming researches for different engine operation conditions (engine speed, load and environment conditions) and subsequently the map of ignition advance angles should be determined at state remaining separate parameters. The values of the ignition advance angle should be selected and programmed in electronic control unit, which will be control the ignition advance angle at different engine operating conditions. The dependences between engine operating parameters and the ignition timing are not linear and therefore mechanical control system is not effective. Some research results concerning the best engine operating parameters has been presented in this paper.
    Źródło:
    Journal of KONES; 2012, 19, 4; 367-377
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An analysis of the use of cruise control in a passenger car
    Autorzy:
    Andrzejewski, Maciej
    Merkisz, Jerzy
    Nowak, Mateusz
    Ziółkowski, Andrzej
    Daszkiewicz, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/263054.pdf
    Data publikacji:
    2020
    Wydawca:
    Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
    Tematy:
    fuel consumption
    cruise control
    speed driving strategy
    Opis:
    Most vehicles are powered by internal combustion engines. Due to the nature of their operation they emit, among others, carbon dioxide which contributes to the greenhouse effect. CO2 production is strictly correlated with fuel consumption. The article presents the results of road tests of a passenger car with a spark-ignition engine meeting the Euro 6 emission norm. The test vehicle was equipped with a classic exhaust gas aftertreatment system – a three-way catalytic converter. The aim of the study was to verify the impact of the cruise control use on the vehicle fuel consumption. The measurements were based on Portable Emission Measurement System type mobile equipment for exhaust emission tests. The tests were carried out in real driving conditions travelling on an express way. Test drives took place on a route with variable topographic profile. Three test drives with different speeds were carried out, but the aim was to obtain an average speed of 130 km/h.
    Źródło:
    Archiwum Motoryzacji; 2020, 89, 3; 37-49
    1234-754X
    2084-476X
    Pojawia się w:
    Archiwum Motoryzacji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of strategy adaptation on differential evolution in presence and absence of parameter adaptation: an investigation
    Autorzy:
    Dawar, D.
    Ludwig, S. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/91882.pdf
    Data publikacji:
    2018
    Wydawca:
    Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
    Tematy:
    evolutionary algorithms
    differential evolution
    mutation strategy
    adaptive control
    Opis:
    Differential Evolution (DE) is a simple, yet highly competitive real parameter optimizer in the family of evolutionary algorithms. A significant contribution of its robust performance is attributed to its control parameters, and mutation strategy employed, proper settings of which, generally lead to good solutions. Finding the best parameters for a given problem through the trial and error method is time consuming, and sometimes impractical. This calls for the development of adaptive parameter control mechanisms. In this work, we investigate the impact and efficacy of adapting mutation strategies with or without adapting the control parameters, and report the plausibility of this scheme. Backed with empirical evidence from this and previous works, we first build a case for strategy adaptation in the presence as well as in the absence of parameter adaptation. Afterwards, we propose a new mutation strategy, and an adaptive variant SA-SHADE which is based on a recently proposed self-adaptive memory based variant of Differential evolution, SHADE. We report the performance of SA-SHADE on 28 benchmark functions of varying complexity, and compare it with the classic DE algorithm (DE/Rand/1/bin), and other state-of-the-art adaptive DE variants including CoDE, EPSDE, JADE, and SHADE itself. Our results show that adaptation of mutation strategy improves the performance of DE in both presence, and absence of control parameter adaptation, and should thus be employed frequently.
    Źródło:
    Journal of Artificial Intelligence and Soft Computing Research; 2018, 8, 3; 211-235
    2083-2567
    2449-6499
    Pojawia się w:
    Journal of Artificial Intelligence and Soft Computing Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charging and Discharging Strategies for Clustered Regional Energy Storage System
    Autorzy:
    Li, Yang
    Janik, Przemysław
    Pfeiffer, Klaus
    Schwarz, Harald
    Powiązania:
    https://bibliotekanauki.pl/articles/2175940.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    charging strategy
    discharging strategy
    energy storage system
    energy-to-power ratio
    fuzzy logic control
    Opis:
    With the massive expansion of decentralised renewable energy in electricity grid networks, the power supply system has been changed from centralised to decentralised one and from directional to bi-directional one. However, due to the regional energy structure difference in the power imbalance between electricity generation and consumption is becoming more and more serious. A grid-scale energy storage system (ESS) can be one solution to balance the local difference. In this paper, two charging/discharging strategies for the grid-scale ESS were proposed to decide when and with how much power to charge/discharge the ESS. In order to realise the two strategies, this paper focuses on the application of fuzzy logic control system. The proposed strategies aim to reduce the peak power generation, consumption and the grid fluctuation. In particular, this paper analysis the ratio between energy-capacity and rated power of ESS. The performance of the proposed strategies is evaluated from two aspects, the normalised power of ESS itself and the influence on the power grid. Simulation studies were carried out on the rule-based control systems with different energy-to-power (e2p) ratios, and the results show that the proposed charging strategy with combination of extreme situation of power imbalance and the rest capacity of ESS provides a smooth load curve for the regional power grid system while the external power exchange is reduced effectively.
    Źródło:
    Power Electronics and Drives; 2022, 7, 42; 56--67
    2451-0262
    2543-4292
    Pojawia się w:
    Power Electronics and Drives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    System modeling and control of organization business processes by use of balanced scorecard and system dynamics
    Autorzy:
    Banaś, D.
    Michnik, J.
    Targiel, K. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/971039.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    system dynamics
    control
    balanced scorecard
    decision making
    simulation
    strategy
    Opis:
    Developing an effective business strategy ought to be based on the aspects of rationality, not only with the roots of present time, but also with the past and characteristics acquired in previous competitive episodes that may form the context for future ones. Thus, in analyzing the possibility of supporting decisionmaking process, one should take into account the essential properties of economic entities (objects), such as their complexity, dynamics and nonlinearity. Within this perspective, in order to model the dynamic behavior, system dynamics approach has been used in the work here reported. This technique complements the popular management approach of balance scorecard, providing the multidimensional view of an enterprise and expressing the interrelations among different processes in it.
    Źródło:
    Control and Cybernetics; 2016, 45, 2; 185-205
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Price Method and Network Congestion Control
    Autorzy:
    Malinowski, K.
    Niewiadomska-Szynkiewicz, E.
    Jaskóła, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/309158.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    computer network
    congestion control
    coordination strategy
    price
    price instruments
    retail pricing problem
    Opis:
    Price instruments are useful in achieving market balance conditions in various markets. Those instruments can be also used for control of other composite systems. The formulation and basic properties of the Price Method are reviewed and then the congestion control by price instruments in a computer network is described and tested.
    Źródło:
    Journal of Telecommunications and Information Technology; 2010, 2; 73-77
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Backward motion planning and control of multiple mobile robots moving in tightly coupled formations
    Autorzy:
    Ramanathan, Kuppan Chetty
    Mohan, Manju
    Dhanraj, Joshuva Arockia
    Powiązania:
    https://bibliotekanauki.pl/articles/1956065.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Promocji Wiedzy
    Tematy:
    multi-robot systems
    formation control
    behavior-based control
    switching strategy
    Stateflow
    systemy wielorobotowe
    kontrola formacji
    kontrola behawioralna
    strategia przełączania
    Opis:
    This work addresses the development of a distributed switching control strategy to drive the group of mobile robots in both backward and forward motion in a tightly coupled geometric pattern, as a solution for the deadlock situation that arises while navigating the unknown environment. A generalized closed-loop tracking controller considering the leader referenced model is used for the robots to remain in the formation while navigating the environment. A tracking controller using the simple geometric approach and the Instantaneous Centre of Radius (ICR), to drive the robot in the backward motion during deadlock situation is developed and presented. State-Based Modelling is used to model the behaviors/motion states of the proposed approach in MATLAB/STATEFLOW environment. Simulation studies are carried out to test the performance and error dynamics of the proposed approach combining the formation, navigation, and backward motion of the robots in all geometric patterns of formation, and the results are discussed.
    Źródło:
    Applied Computer Science; 2021, 17, 3; 60-72
    1895-3735
    Pojawia się w:
    Applied Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Varietal resistance of potatoes to late blight and chemical protection strategy
    Autorzy:
    Kapsa, J
    Powiązania:
    https://bibliotekanauki.pl/articles/66660.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Phytophthora infestans
    late blight
    genetic resistance
    chemical protection
    fungi
    resistance
    potato
    chemical control
    protection strategy
    Opis:
    The genetic resistance of potato varieties can be utilized to lower the fungicide rates used for plant protection against late blight. The very resistant varieties can be protected with half the rate of fungicide without negative effect on efficiency of the control.
    Odporność genetyczna odmian ziemniaka może być wykorzystana do zmniejszania dawek fungicydów, stosowanych w ochronie plantacji ziemniaka przed zarazą. Odmiany bardzo odporne (Meduza) mogą pozostawać niechronione lub mogą być chronione fungicydami, stosowanymi w dawkach zmniejszonych o połowę (dla uniknięcia problemów ewentualnie zwiększonej presji infekcyjnej patogena w ciągu okresu wegetacji). Uzyskane wyniki wskazują, że odmiany podatne na zarazę (Karlena) wymagają ochrony prowadzonej w pełnych zalecanych dawkach fungicydów w każdym roku, niezależnie od presji infekcyjnej patogenu. Dla niektórych odmian, nawet o średniej odporności (Panda) wystarczające są dawki zmniejszone do 50-75% by skutecznie hamowały rozwój zarazy w niektóre lata. Różne odmiany mogą reagowa w różny sposób na zmniejszanie dawek fungicydów. W przeprowadzonych badaniach stwierdzono istotne współdziałanie odmian i dawek fungicydowych. Uwzględnienie genetycznej odporności odmian ziemniaka na zarazę pozwala obniża dawki stosowanych fungicydów, z zachowaniem zadawalającej skuteczności ochrony, co może by ważne ze względu na ochronę środowiska.
    Źródło:
    Journal of Plant Protection Research; 2002, 42, 2
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Etapy formułowania strategii przedsiębiorstwa turystycznego z uwzględnieniem konkurencyjności regionu
    Tourist enterprise strategy formulation including regional competitiveness
    Autorzy:
    Kozioł, Leszek
    Żmigrodzki, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/414801.pdf
    Data publikacji:
    2008
    Wydawca:
    Małopolska Wyższa Szkoła Ekonomiczna w Tarnowie
    Tematy:
    misja
    wizja
    formułowanie strategii
    kontrola strategiczna
    konkurencyjność regionu
    mission
    vision
    strategy formulation
    strategic control
    regional competitiveness
    Opis:
    W artykule przedstawiono tezę, zgodnie z którą zarządzanie strategiczne przedsiębiorstwa turystycznego wynika z kompleksowego popytu na oferowane przez nie usługi. Ponieważ popyt turystyczny występuje w postaci konglomeratu potrzeb i pragnień pojawiających się w związku z czasową zmianą miejsca pobytu, jego zaspokojenie wymaga współistnienia i współdziałania wielu różnych podmiotów obsługi ruchu turystycznego, a w tym również konkurencyjności regionu. W opracowaniu tym podano metodykę formułowania strategii firmy turystycznej uwzględniającą analizę konkurencyjności destynacji, tj. regionu stanowiącego obszar recepcji turystycznej.
    The article presents the thesis, according to which strategic management of a tourist enterprise results from a complex demand for its services. Due to the fact that tourist demand appears in the form of a conglomerate of needs and desires which occur in connection with a temporary change of place of residence, its fulfilment requires co-existence and co-operation of a number of various entities which operate the tourist traffic, including regional competitiveness. The study provides methodology of formulating the strategy of a tourist company, taking into account the analysis of destination competitiveness, i.e. the region comprising the area of tourist reception.
    Źródło:
    Zeszyty Naukowe Małopolskiej Wyższej Szkoły Ekonomicznej w Tarnowie; 2008, 1(11); 25-34
    1506-2635
    Pojawia się w:
    Zeszyty Naukowe Małopolskiej Wyższej Szkoły Ekonomicznej w Tarnowie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimal production of electrolytic copper determined by the concentration and distribution of copper concentrates to smelters on the example of KGHM
    Optymalizacja produkcji miedzi elektrolitycznej poprzez system wzbogacania i dystrybucji koncentratów do hut na przykładzie KGHM
    Autorzy:
    Saramak, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/351479.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    optymalizacja
    strategia produkcji miedzi
    programowanie nieliniowe
    sterowanie
    modelowanie
    optimization
    copper production strategy
    nonlinear programming
    process control
    modelling
    Opis:
    The issues of copper production strategy for the Polish copper industry are presented in the article. The problem is considered within the scope of the ore extraction, ore concentration and metallurgical processing of the copper concentrate and the main aim is to produce the specific amount of copper, which generates maximum technological and economic benefits. In order to determine the strategy of production for a company an optimisation approach may be applied with the target function defined as either the maximization of metal recovery or the maximization of profit. The real operating conditions are implemented into the model, together with existing limitation resulting from the concentration technology and metallurgical treatment. The problem verification was possible with using of non-linear programming theory. Two variants were considered: the first for lower production costs, and the second for low stock market prices. The presented optimal strategies determine the copper grades of concentrates as well as the system of concentrates distribution between three smelters. Generally smelters should receive concentrates with higher copper grades for low stock market metal prices and for low processing costs the mass of concentrates delivered to smelters should be higher together with decreased the copper grades.
    W pracy przedstawiono zagadnienia dotyczące strategii produkcji miedzi elektrolitycznej dla polskich warunków produkcji miedzi w układzie kopalnia-zakład przeróbczy-huta miedzi. Problem jest rozpatrywany głównie z punktu widzenia hut miedzi, ale determinowany jest jakością i ilością koncentratów miedziowych wyprodukowanych przez zakłady przeróbcze. Celem jest osiągniecie maksymalnych efektów technologicznych i ekonomicznych. Podejście optymalizacyjne zakłada zbudowanie odpowiedniego modelu ekonometrycznego z funkcja celu zdefiniowaną jako maksymalny odzysk metalu oraz uwzględnieniem istniejących realnych ograniczeń technologicznych Weryfikacja modelu jest możliwa z wykorzystaniem oprogramowania działającego w oparciu o teorię programowania nielinowego. W artykule przedstawiono analizę dla dwóch wariantów produkcji miedzi: niskich kosztów produkcyjnych oraz niskich cen giełdowych miedzi. Aby maksymalizować funkcję celu w zaprezentowanym modelu, w okresie niskich cen produkcji huty powinny otrzymywać mniej koncentratów o wyższej zawartości miedzi, natomiast przy niskich giełdowych cenach miedzi, huty powinny przerabiać większe ilości koncentratu o zmniejszonej zawartości miedzi.
    Źródło:
    Archives of Metallurgy and Materials; 2011, 56, 3; 619-626
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hip strategy alterations in patients with history of low disc herniation and non-specific low back pain measured by surface electromyography and balance platform
    Autorzy:
    Ciesielska, J.
    Lisiński, P.
    Bandosz, A.
    Huber, J.
    Kulczyk, A.
    Lipiec, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/306847.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    staw biodrowy
    postawa ciała
    balansowanie
    platforma
    low back pain
    postural control
    surface electromyography
    hip strategy
    balance platform
    Opis:
    Purpose: The appearance of pathology in the lumbar spine, such as a previous episode of low disc herniation or non-specific low back pain contributes to improper activation of the hip muscles. The aim of the study was to detect alterations in hip strategy manifested by differences in balance parameters and rectus femoris and gluteus maximus activity in people with previous episode of pain radiation to one lower limb caused by low disc herniation or non-specific low back pain. Methods: We studied 11 patients with history of low-disc herniation, 9 patients with history of non-specific low back pain and 10 healthy subjects. Hip strategy alterations were detected by measuring rectus femoris and gluteus maximus activity in bilateral surface polyelectromyographic recordings and by stability measurements on a balance platform. Results: In the surface polyelectromyography study, in both patients' group the value of the average amplitude was higher and the amount of the fluctuations was lower than in healthy subjects. There were no significant differences in stability parameters. Conclusions: A changed pattern of hip muscles activity was detected in the patients without changes in stability parameters. Greater disorder occurs in people in with previous episode of pain radiation to one lower limb caused by low disc herniation than in people with non-specific low back pain.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2015, 17, 3; 103-108
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determinants of aggressive coping strategies in adolescent youth in situations of social conflict
    Autorzy:
    Danuta, Borecka-Biernat
    Powiązania:
    https://bibliotekanauki.pl/articles/896490.pdf
    Data publikacji:
    2019-08-19
    Wydawca:
    Akademia Pedagogiki Specjalnej im. Marii Grzegorzewskiej. Wydawnictwo APS
    Tematy:
    secondary school youth
    locus of control
    cognitive appraisal
    parental attitudes
    aggressive coping strategy
    situation of social conflict
    Opis:
    The purpose of the study was to find personality and family predictors of aggressive coping strategies in adolescent youth in situations of social conflict. The Questionnaire for Analysis of Coping Strategies in Adolescents in Situations of Social Conflict (Kwestionariusz do badania strategii radzenia sobie młodzieży w sytuacji konfliktu społecznego, KSMK; designed by D. Borecka-Biernat), the Questionnaire for Analysis of the Sense of Control (Kwestionariusz do Badania Poczucia Kontroli, KBPK; designed by G. Krasowicz and A. Kurzyp-Wojnarska, the Stress Assessment Questionnaire (Kwestionariusz Oceny Stresu, KOS; designed by D. Włodarczyk and K. Wrześniewski), as well as M.Plopa’s Parental Attitude Scale (Skala Postaw Rodzicielskich, SPR) were used in the study. The empirical research was conducted in secondary schools on a sample of 893 adolescents (including 468 girls and 425 boys) in the age range of 13 to 15. In the light of the conducted studies it was determined that a strong conviction of the influence of other people on positive or negative outcomes of events , as well as the assessment of a situation of conflict as threat coincides with aggressive coping strategies in youth in situations of social conflict. The analysis of the results has revealed that the tendency to react aggressively to emotional tension generated in social conflict is shaped by an inappropriate parental attitude, characterized by an emotional distance of a parent to their adolescent child.
    Źródło:
    Psychologia Wychowawcza; 2018, Special issue; 115-128
    0033-2860
    Pojawia się w:
    Psychologia Wychowawcza
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Self-esteem and Locus of Control as Determinants of Aggressive Coping Strategy of Young People in a Social Conflict Situation
    Autorzy:
    Borecka-Biernat, Danuta
    Powiązania:
    https://bibliotekanauki.pl/articles/2049009.pdf
    Data publikacji:
    2014-10-31
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    junior high school youth
    self-esteem
    locus of control
    emotional reactions
    aggressive
    coping strategy
    social confl ict situations
    Opis:
    The aim of the study was to evaluate the contribution of self-esteem and locus of control in generating in the youth an aggressive coping strategy in a social conflict situation. The study made use of a proprietary questionnaire to study the coping strategy of youth in a social conflict situation (KSMK), the Rosenberg Self-Esteem Scale (SES), and the questionnaire to Study the Locus of Control (KBPK) created by G. Krasowicz and A. Kurzyp-Wojnarska. Empirical studies were carried out in junior high schools [Polish: gimnazjum] in Wroclaw and the surrounding area. They involved 811 adolescents (414 girls and 397 boys) aged 13 – 15. In the light of the performed studies it was stated that low general selfesteem in youth and strong belief in the influence of others on positive or negative effects of events play a particular role in the choice of aggressive strategy of young people to cope in a social confl ictsituation.
    Źródło:
    Kultura i Edukacja; 2014, 5(105); 211-231
    1230-266X
    Pojawia się w:
    Kultura i Edukacja
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model of production control in just-in-time delivery system conditions
    Model sterowania produkcją w warunkach dostaw w systemie Just-in-Time
    Autorzy:
    Kozłowski, E.
    Gola, A.
    Świć, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/175919.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    production control
    just-in-time strategy
    optimization
    planning fixed horizon
    sterowanie produkcją
    strategia Just in Time
    optymalizacja
    określony horyzont planowania
    Opis:
    The article presents the mathematical model of production control in the Just-in-time delivery system’s conditions for a planning fixed horizon. The aim of the control model is to determine the demand for means of production (materials, labour force) at the right moment of time. The stochastic model of appearing the fault products was taking into account. Minimization both the costs of manufacturing and possible penalties connected with the incomplete execution of the order was taken as a criterion of optimization process.
    W pracy przedstawiono matematyczny model sterowania produkcją w warunkach dostaw w systemie Just-in-time, w określonym horyzoncie czasowym. Model sterujący określa zapotrzebowanie na środki produkcji (materiały, siła robocza) w zdefiniowanych momentach czasu. Pod uwagę wzięto stochastyczny model występowania wyrobów wadliwych w procesie produkcyjnym. Jako kryterium optymalizacji rozważano minimalizację kosztów produkcji oraz ewentualnych kar związanych z niepełną realizacją zamówień.
    Źródło:
    Advances in Manufacturing Science and Technology; 2014, 38, 1; 77-88
    0137-4478
    Pojawia się w:
    Advances in Manufacturing Science and Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The distribution of marshalling work of industrial and mainline rail transport
    Autorzy:
    Borodin, A.
    Panin, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/374083.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    organization of car traffic volumes
    network flow model
    distribution
    compromise control
    strategy of marshalling
    organizacja natężenia ruchu samochodowego
    model przepływu sieciowego
    dystrybucja
    Opis:
    The article discusses the issue of effective distribution of work on formation of train network between the stations of industrial and mainline rail transport. The analysis is worked out of difficulties in the interaction of technological systems of railway transport of common and uncommon use and risks of the transport stream delays. The strategy for sorting of wagons and a complex of interconnected mathematical models is developed. The proposed solution method is based on step-by-step distribution of traffic volumes over the network through valid assignments of trains with subsequent calculation of the compromise management, taking into account the interests of each owner of transport infrastructure and each individual member of the transport and logistics chains.
    Źródło:
    Transport Problems; 2018, 13, 4; 37-46
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Strategia zmian - czy zmiany strategii?
    A Strategy of Change - or a Change of Strategy?
    Autorzy:
    Chorośnicki, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/2092023.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Warszawski. Wydział Nauk Politycznych i Studiów Międzynarodowych
    Tematy:
    Security
    International security
    Internal security
    Global strategy
    National Security Strategy
    Common Security and Defence Policy
    Globalization
    Population migration
    Armed conflicts
    Arms control
    Bezpieczeństwo
    Bezpieczeństwo międzynarodowe
    Bezpieczeństwo wewnętrzne
    Strategia globalna
    Narodowa Strategia Bezpieczeństwa
    Wspólna Polityka Bezpieczeństwa i Obrony
    Globalizacja
    Migracja ludności
    Konflikty zbrojne
    Kontrola zbrojeń
    Opis:
    Opracowanie analizuje etapy przemian strategii światowej w ujęciu globalnym i regionalnym. Teza o nieadekwatności działań politycznych i ekonomicznych w dzisiejszej rzeczywistości międzynarodowej jest smutna, ale prawdziwa. Punktów zapalnych w polityce światowej nie ubywa, co gorsze pojawiają się nowe (np. wyścig zbrojeń konwencjonalnych). Problemów świata w ich złożoności nie da się rozwiązać za pomocą pomysłów i narzędzi z przeszłości. Punktem centralnym strategii światowej jest bezpieczeństwo. Pozorne oddalenie groźby konfliktu światowego, który mogą poprzedzić konflikty regionalne, jest dziś niepewne. Identyfikacja i opis zagrożeń nie zastąpi konkretnych, a nade wszystko skutecznych działań. Tym większe jest więc pole działania dla analityków i znawców dzisiejszej strategii ujmowanej wielowymiarowo. (abstrakt oryginalny)
    The study examines the stages in the evolution of global strategy in the global and regional dimension. The thesis on the inadequacy of political and economic activities in today's international reality is sad but true. The hotspots in world politics are not becoming less numerous, and new ones keep appearing (e.g. the conventional arms race). Given their complexity, the problems that plague the world cannot be solved using the ideas and tools of the past. The cornerstone of global strategy is security. The seemingly remote threat of a world conflict that may be preceded by regional conflicts is a bit more real today. The identification and description of threats will not suffice; specific and effective measures must be taken. This makes the work of analysts of and experts in contemporary strategy approached in a multidimensional manner even more important. (original abstract)
    Źródło:
    Stosunki Międzynarodowe - International Relations; 2017, 53, 2; 143-151
    0209-0961
    Pojawia się w:
    Stosunki Międzynarodowe - International Relations
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    When elective affinities foster Europeanization: How the EU active welfare state model and national policies for controlling the unemployed reinforced each other (1997-2005)
    Kiedy powinowactwa z wyboru sprzyjają europeizacji. Jak wzajemnie wzmacniają się unijny model aktywnego państwa dobrobytu i krajowe polityki kontrolowania bezrobotnych w latach 1997-2005
    Autorzy:
    Dubois, Vincent
    Powiązania:
    https://bibliotekanauki.pl/articles/1013094.pdf
    Data publikacji:
    2020-10-01
    Wydawca:
    Szkoła Główna Handlowa w Warszawie
    Tematy:
    European Employment Strategy
    France
    international comparison
    elective affinities
    Weberian approach
    europeizacja
    aktywne państwo społeczne
    kontrola
    bezrobocie
    europejska strategia zatrudnienia
    Francja
    porównania międzynarodowe
    powinowactwa z wyboru
    ujęcie Weberowskie
    Europeanization
    active social state
    control
    unemployment
    Opis:
    This paper advocates the use of a Weberian framework in the analysis of the processes of Europeanization of public policies. It focuses on employment policies to explore the "elective affinities" between the European Employment Strategy launched in 1997 and the subsequent elaboration of national reforms reorganizing and strengthening monitoring, surveillance, and sanctions of the unemployed. From this perspective, Europeanization is defined as mutual reinforcement between European policy frames and national reforms than a top-down unilateral relationship of influence.
    Niniejszy artykuł wykorzystuje ramy teoretyczne Maxa Webera do badania procesów europeizacji polityk publicznych. Skupia się na polityce zatrudnienia, by analizować "powinowactwa z wyboru" między Europejską Strategią Zatrudnienia zainicjowaną w 1997 r. a późniejszymi reformami krajowymi reorganizującymi i wzmacniającymi monitorowanie, sankcjonowanie i nadzór bezrobotnych. W tym ujęciu, europeizacja jest rozumiana raczej jako wzajemne wzmacnianie się polityki europejskiej i reform krajowych niż relacja oparta na jednostronnym, odgórnym oddziaływaniu.
    Źródło:
    Studia z Polityki Publicznej; 2020, 7, 2(26); 9-32
    2391-6389
    2719-7131
    Pojawia się w:
    Studia z Polityki Publicznej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Born in the Ashes: Nuclear Uncertainties ‘Increasing’ Strategic Stability
    Zrodzeni w popiołach: niepewność jądrowa „zwiększa” stabilność strategiczną
    Autorzy:
    Sinovets, Polina
    Melnyk, Tetiana
    Powiązania:
    https://bibliotekanauki.pl/articles/1179121.pdf
    Data publikacji:
    2020-12-31
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    strategic stability
    deterrence
    arms control
    missile technologies
    artificial intelligence
    space
    nuclear strategy
    US nuclear posture
    Russian nuclear posture
    stabilność strategiczna
    odstraszanie
    kontrola zbrojeń
    technologie rakietowe
    sztuczna inteligencja
    przestrzeń
    strategia nuklearna
    postawa nuklearna USA
    postawa nuklearna Rosji
    Opis:
    The article explores the challenges that strategic stability is facing under the new nuclear world order. These are conceptual deviations from Cold War-framed deterrence theory, technological breakthroughs and critical transformations of states’ nuclear postures. Contrary to the existing publications on this issue, we claim that strategic stability will continue under the new nuclear order and might even be strengthened by the complex combination of security challenges, given the growing impossibility to de-escalate war once it breaks out.
    Artykuł analizuje wyzwania, jakie przed stabilnością strategiczną stawia nowy nuklearny porządek świata, obejmujące koncepcyjne warianty teorii odstraszania w ramach zimnej wojny, przełom technologiczny i krytyczną transformację postaw nuklearnych państw. Wbrew dotychczasowym publikacjom na ten temat twierdzimy, że w nowym porządku nuklearnym stabilność strategiczna zostanie utrzymana, a nawet może wzmocniona przez złożoną kombinację wyzwań, jakie stoją przed bezpieczeństwem, biorąc pod uwagę rosnącą niemożność deeskalacji wojny po jej wybuchu.
    Źródło:
    Przegląd Strategiczny; 2020, 13; 43-59
    2084-6991
    Pojawia się w:
    Przegląd Strategiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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