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Wyszukujesz frazę "state transition" wg kryterium: Temat


Tytuł:
A newly developed random walk model for PCS network
Autorzy:
Islam, I.
Hossain, S.
Powiązania:
https://bibliotekanauki.pl/articles/308852.pdf
Data publikacji:
2005
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
cell cluster
random walk
subarea n
state transition
probability matrix
expected number of steps
Opis:
Different types of random walk models are prevalent in mobile cellular network for analysis of roaming and handover, being considered as important parameters of traffic measurement and location updating of such network. This paper proposes a new random walk model of hexagonal cell cluster, exclusively developed by the authors and a comparison is made with two existing models. The proposed model shows better performance in context of number of probability states compared to existing models.
Źródło:
Journal of Telecommunications and Information Technology; 2005, 1; 153-156
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Language change and morphological processes
Autorzy:
Hamans, Camiel
Powiązania:
https://bibliotekanauki.pl/articles/1121468.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
language change
opacity
reinterpretation
bidirectionality
affixoid
libfix
state of transition
Opis:
Morphological change is not a result of mechanical, predictable processes, but of the behavior of language users. Speakers reinterpret opaque data in order to assign a more transparent structure to them. Subsequently successful reinterpretation may form the basis of new derivations. The moment such a derivative word formation process becomes productive a language change has taken place. In addition, this paper shows how language change obscures the distinction between separate morphological processes such as compounding and derivation and thus between morphological categories. Moreover, the data under discussion show that there is not a preferred natural direction of language change. Most of the examples are taken from English and Dutch, but also a few French, Frisian, German and Afrikaans data are discussed.
Źródło:
Yearbook of the Poznań Linguistic Meeting; 2017, 3, 1; 1-23
2449-7525
Pojawia się w:
Yearbook of the Poznań Linguistic Meeting
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanistic variation in the glycosyltransfer of N-acetylneuraminic acid
Autorzy:
Horenstein, B.
Yang, J.
Bruner, M.
Powiązania:
https://bibliotekanauki.pl/articles/146968.pdf
Data publikacji:
2002
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
CMP-NeuAc
glycosyltransferase
isotope effects
kinetics
sialyltransferase
trans-sialidase
transition state
Opis:
N-acetylneuraminic acid is an acidic nine-carbon amino ketose typically found at the non-reducing terminus of glycoproteins and glycolipids. The presence of a carboxylate group adjacent to the anomeric center suggest that this sugar could have transition states with highly stabilized oxocarbenium ion character during transfer reactions at the anomeric carbon. Kinetic isotope effect (KIE) experiments were used to probe the transition state for solvolysis of UMP-NeuAc, sialyltransferase-catalyzed transfer of UMP-NeuAc to N-acetyl-lactosamine, trans-sialidase catalyzed transfer of alfa(2--3) Neu-Lac or alfa(2--3) Neu-Gal, and acid catalyzed hydrolysis of alfa(2--3) Neu-Lac. The two key positions of isotope substitution in the N-acetyl neuraminic acid residue were the C3’ position, di-substituted with deuterium, and the C2’ position, substituted with either carbon-13 or carbon-14. The solvolysis reaction had a beta–2H KIE of 1.28 and a primary 14C KIE of 1.03. The sialyltransferase-catalyzed reaction had a b-2H KIE of 1.22 and a 14C KIE of 1.03. Trans-sialidase had a b–2H KIE of 1.05 and a primary 13C KIE of 1.03, equivalent to a 14C KIE of 1.06. Solvolysis of the trans-sialidase substrate gave a beta-2H KIE of 1.06, and a primary 13C KIE of 1.015. The results indicate a very late transition state for solvolysis of CMP-NeuAc, without nucleophilic participation. The sialyltransferase transition state is similar, but with less charge development. Trans-sialidase has a transition state with diminished charge development and considerable nucleophilic character, which leads to a covalent intermediate. The glycosyltransfer of N-acetylneuraminic acid glycosides is not limited to the classical dissociative mechanism.
Źródło:
Nukleonika; 2002, 47,suppl.1; 25-28
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computational study of substrate isotope effect probes of transition state structure for acetylcholinesterase catalysis
Autorzy:
Sikorski, R..
Malany, S.
Seravalli, J.
Quinn, D.
Powiązania:
https://bibliotekanauki.pl/articles/147114.pdf
Data publikacji:
2002
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
acetylcholinesterase
carbonyl addition reactions
enzyme mechanisms
quantum mechanical calculations
transition state structure
Opis:
Secondary isotope effects for carbonyl addition reactions of methyl thioacetate, acetone and acetaldehyde have been calculated by ab initio quantum mechanical methods in an effort to interpret measured beta-deuterium isotope effects on acetylcholinesterase- catalyzed hydrolysis of acetylthiocholine. The calculated beta-deuterium isotope effect for equilibrium addition of methanol to methyl thioacetate is D3Keq = 0.965, and the corresponding effect for addition of methoxide ion to methyl thioacetate wherein three waters are hydrogen bonded to the carbonyl oxyanion is D3Keq = 1.086. Neither of these calculated isotope effects is as inverse as the experimental beta-deuterium isotope effect for acetylcholinesterase-catalyzed hydrolysis of acetylthiocholine, D3kE = 0.90š0.03. Structural comparisons show that the water-solvated methoxide adduct of methyl thioacetate is more expanded than is the neutral methanol addition adduct, and suggest that the degree to which the isotope effect is inverse (i.e. less than) is inversely correlated to the degree of expansion of the adduct. A similar correlation of beta-deuterium and beta-deuterium secondary isotope effects with the degree of expansion of the adducts is found for equilibrium additions of methanol and methoxide ion to acetaldehyde. These computational results suggest that the markedly inverse beta-deuterium isotope effect for the acetylcholinesterase reaction arises from enzymic compression of the transition state.
Źródło:
Nukleonika; 2002, 47,suppl.1; 9-12
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model prawdopodobieństwa sukcesu systemów o zadaniach okresowych z ograniczoną liczbą części zamiennych
Success probability model of phased mission systems with limited spares
Autorzy:
Zhang, T.
Bai, G.
Guo, B.
Powiązania:
https://bibliotekanauki.pl/articles/301311.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
prawdopodobieństwo sukcesu
systemy o zadaniach okresowych
wymiana części
minimalna ścieżka zdatności
prawdopodobieństwo przejść między stanami
success probability
phased mission systems
spare replacement
minimal path set
state transition probability
Opis:
W niniejszej pracy skonstruowano model do analizy prawdopodobieństwa sukcesu systemów o zadaniach (misjach) okresowych (ang. phased mission systems, PMS) z daną, ograniczoną liczbą części zamiennych. Konfiguracja systemu oraz kryteria sukcesu zadania okresowego mogą być różne dla różnych faz zadania. Większość technik i narzędzi służących do analizy systemów o zadaniach okresowych nie zakłada wymiany części podczas zadania okresowego lub nie bierze pod uwagę czasu wykonania napraw elementów składowych. Tymczasem, w niektórych zadaniach okresowych istnieje możliwość wymiany elementów składowych na zapasowe bądź to w trakcie trwania zadania bądź też w przerwach pomiędzy fazami, a czas takiej wymiany zazwyczaj nie jest bez znaczenia. Biorąc pod uwagę politykę minimalnej wymiany części (ang. minimal spare replacement policy, MSRP), często stosowaną podczas ćwiczeń wojskowych, w niniejszym artykule przedstawiono matematyczny model do analizy prawdopodobieństwa sukcesu zadania okresowego, oparty na dwóch metodach: minimalnych ścieżek zdatności oraz analizy stanu systemu. Możliwość wykorzystania modelu zilustrowano i zweryfikowano na podstawie przykładowych ćwiczeń wojskowych.
This paper builds a model to analyze the success probability of phased mission systems (PMS) with given limited spares. The configuration and success criteria of phased mission may vary from phase to phase. Most reliability analysis techniques and tools of phased mission systems assume that there is no spare replacement during the phased mission or the component repair times are neglected. However, for some phased missions, failed components can be replaced by spares during the mission or in the interval of the phases and the spare replacement times are generally not negligible. By considering minimal spare replacement policy (MSRP) which is often used in military exercise, this paper presents a mathematical model for success probability analysis of phased mission which is based on minimal path set and system state analysis methods. Then, the model was demonstrated and validated by an example of military exercise.
Źródło:
Eksploatacja i Niezawodność; 2012, 14, 1; 24-32
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical study of kinetic isotope effects on hydrogen abstraction reactions
Autorzy:
Kurosaki, Y.
Powiązania:
https://bibliotekanauki.pl/articles/147000.pdf
Data publikacji:
2002
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
ab initio molecular orbital method
hyrogen abstraction reaction
potential energy surface
secondary isotope effect
transition state theory
tunneling
Opis:
Effects of isotopic substitutions of "spectator" hydrogens on rate constants have been theoretically examined for the CH3 + H2 ' CH4 + H (I) and C2H + H2 ' C2H2 + H (II) reactions using variational transition state theory with the multidimensional semiclassical tunneling correction. A small but significant secondary isotope effect was found for reaction (I) but almost no isotope effect was found for reaction (II). This is because the potential energy surface for reaction (II) has an "early" character.
Źródło:
Nukleonika; 2002, 47,suppl.1; 81-88
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przejścia fazowe w czasoprzestrzeni ekonomicznej. Ku sformułowaniu prawa ruchu
Phase Transitions in Economic Time-space. Towards Formulation of the Law of Motion
Autorzy:
Domański, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/2028959.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Organic transition
shift to higher steady-state
transition and optimal growth
transition dynamics
Opis:
This paper presents a mechanism of the phase transition in economic time-space. The author, in particular, identifies various parts of this mechanism and describes their actions. He distinguishes the following parts: a) transition dynamics, b) transition in the process of optimal growth, c) organic transitions, d) transition from lower to higher level of steady-state. The author expects that future deeper inquire in this mechanism will enable formulation of the law of motion of economic time-space.
Źródło:
Studia komitetu przestrzennego zagospodarowania kraju PAN; 2014, 157; 78-90
0079-3507
Pojawia się w:
Studia komitetu przestrzennego zagospodarowania kraju PAN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
State Capitalism in Poland
Autorzy:
Kozarzewski, Piotr
Bałtowski, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/2168345.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
state capitalism
post-communist transition
state-owned enterprises
rent seeking
Opis:
Theoretical background: The article is devoted to the knowledge gap in understanding processes of growing state interventionism in a number of post-communist countries, Poland being one of the most notable examples. This evolution is still understudied in the literature, both in terms of evidence and proper theoretical framework. Existing theoretical perspectives have been created for studying other types of economies an do not fully fit the transition ones. Among these perspectives, the state capitalism (SC) one seems to be the most promising.Purpose of the article: The task of this paper is to study the growing state interventionism in Poland using the state capitalism approach which had to be refined by the authors in order to be more applicable for analyzing transition economies. Using this framework, the history of SC formation and its present state in Poland are studied, including specific features of Polish state capitalism, e.g. the importance of the state-owned enterprise (SOE) sector as the source of rents, as well as the varieties of the state control over the enterprise sector.Research methods: The article makes use of mostly qualitative methods, quantitative ones playing an auxiliary role by systematizing evidence used in qualitative research. The study was based on analysis of the existing literature and evidence of interventionist practices of the Polish government. The authors attempted to fine-tune the SC approach both through refining its definition and including areas previously mostly neglected by SC studies such as relationships between the state and the enterprise sector. They created a typology of SC phenomena in transition economies which made it possible to study the Polish case in a comprehensive way.Main findings: At this stage, the authors think that no strict definition of state capitalism is possible because of its highly contextual character. Thus, the outcome of the study may not be universal, but the authors believe that their concept of six basic features of state capitalism may be applicable not only to Poland, but to other transition economies as well. Besides, the article raises awareness of the importance of state-controlled enterprises in studies on state capitalism. The article also identifies challenges for further research and the still existing knowledge gaps. Among others, the questions remain, whether the statist trends in Poland and other countries lead to a system change and what are the roots of these trends.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia; 2022, 56, 1; 61-77
0459-9586
2449-8513
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
What determines the scale of state ownership in enterprises? Some evidence from post-socialist countries
Autorzy:
Matuszak, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1817735.pdf
Data publikacji:
2020-12-30
Wydawca:
Uniwersytet Ekonomiczny w Poznaniu
Tematy:
state-owned enterprises
state ownership
post-socialist countries
privatisation
transition
Opis:
State-owned enterprises still play an important role in many countries around the world. The aim of this research is to indicate which factors had a significant impact on the scale of state ownership in enterprises in the group of twenty eight post-socialist countries. The large scale privatisation indicator from the EBRD and the novel microlevel-based SOE measure were regressed on sets of cultural, political, economic and control variables. The results show that cultural factors-represented by the dominant religion-had a substantial impact on the scale of state ownership in enterprises while the role of political and economic factors was less pronounced. These results emphasise the importance of cultural factors in shaping the scale of state ownership in enterprises. This study contributes to the literature by analysing factors inuflencing the scale of state ownership in enterprises in contemporary economic conditions which has been missing until now. A discussion on the role of the state as an owner of enterprises has been an important part of contemporary economic literature. The importance of this topic is driven by the fact that the scale of state ownership in enterprises is substantial in many countries around the world. Christiansen and Kim (2014) showed that 282 out of the 2,000 largest publicly listed companies worldwide were state-owned in 2012-2013. Szarzec, Dombi and Matuszak
Źródło:
Economics and Business Review; 2020, 6, 4; 95-117
2392-1641
Pojawia się w:
Economics and Business Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Time-dependant modelling of systems: some open questions
Autorzy:
Eid, M.
Powiązania:
https://bibliotekanauki.pl/articles/2069534.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
system
reliability
failure
state
critical
transition
Boolean
graph
Opis:
Time dependent modelling of complex system is one of the important topics in system reliability engineering. Although system complexity is increasing, the existing models are numerically satisfactory. However, some formal development is still lacking in reliability theory. A full system time-dependency modelling and analysis is not possible without some formal answers on critical transitions and related issues. This is still one of the open questions in system reliability theory. Some promising development relative to critical states is given in this paper with an application case.
Źródło:
Journal of Polish Safety and Reliability Association; 2011, 2, 1; 83--94
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Time-dependant modelling of systems : some open questions
Autorzy:
Eid, M.
Powiązania:
https://bibliotekanauki.pl/articles/2069573.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
system
reliability
failure
critical state
transition
Boolean
graph
Opis:
Time dependent modelling of complex system is one of the important topics in system reliability engineering. Although system complexity is increasing, the existing models are numerically satisfactory. However, some formal development is still lacking in reliability theory. A full system time-dependency modelling and analysis is not possible without some formal answers on critical transitions and related issues. This is still one of the open questions in system reliability theory. Some promising development relative to critical states is given in this paper with an application case.
Źródło:
Journal of Polish Safety and Reliability Association; 2007, 1; 97--107
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Screening Dependence Study of Superconducting State Parameters of 4d- and 5d-Transition Metals Based Binary Alloys
Autorzy:
Dave, H.
Malan, R.
Vora, A.
Powiązania:
https://bibliotekanauki.pl/articles/1030600.pdf
Data publikacji:
2018-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
pseudopotential
superconducting state parameters
transition metals based binary alloys
Opis:
Screening dependence study of the superconductivity in 4d- and 5d-transition metals based binary alloys was performed using the model pseudopotential approach, which was found quite successful in explaining superconductivity in metals, alloys, and metallic glasses. In the present work the superconducting state parameters viz. electron-phonon coupling strength λ, the Coulomb pseudopotential μ*, transition temperature T_{C}, isotope effect exponent α and effective interaction strength N₀ V of some transition metals based binary alloys of 4d- and 5d-transition metals groups were determined in the BCS-Eliashberg-McMillan framework. A considerable influence of various exchange and correlation functions on λ and μ* is found from the present study. The present results of the superconducting state parameters are found in qualitative agreement with the available experimental figures wherever exist.
Źródło:
Acta Physica Polonica A; 2018, 133, 1; 86-93
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
What Determines State Capture in Poland?
Autorzy:
Alwasiak, Stanisław
Lewandowska-Kalina, Monika
Lech, Kalina
Możdżeń, Michał
Kowalewski, Oskar
Rybiński, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/956886.pdf
Data publikacji:
2013
Wydawca:
Akademia Leona Koźmińskiego w Warszawie
Tematy:
law
corruption
state capture
public interest
transition country
Polska
Opis:
Purpose: This study examines the determinants of ex-ante state capture in Poland. Methodology: In order to establish the determinants of ex-ante state capture a logistic regression is estimated. Findings: The study shows that in Poland the majority of legal acts were passed with the aim to satisfy the interest of particular groups. Furthermore, the regression analysis shows that the likelihood of state capture increases during the period of higher economic growth and local elections. The likelihood of state capture, however, declines during presidential elections. The results we attribute to different interests of political parties in the period of local and presidential elections. Finally, we fi nd that the state capture increased over the years in Poland. Additionally, we show that the EU accession did not prevent state capture in Poland. In contrast, the fi nancial crisis of 2007 resulted in a wake-up effect and the likelihood of state capture declined in Poland. Research limitations: In the study we employ proxies for state capture, yet we assume that corruption is a widespread phenomenon in Poland. However, due to its nature corruption is very diffi cult to assess and measure. Originality: The study uses a unique dataset on ex-ante state capture that was identifi ed in the legal acts that have been passed in the period 1990–2011 in Poland.
Źródło:
Management and Business Administration. Central Europe; 2013, 21, 4(123); 86-109
2084-3356
Pojawia się w:
Management and Business Administration. Central Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Need for Competition Law – Discussing the Case of Georgia
Autorzy:
Gvelesiani, Zurab
Powiązania:
https://bibliotekanauki.pl/articles/1395554.pdf
Data publikacji:
2015-06-30
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
competition law
developing state
Georgia
market liberalization
necessity for market regulation
state intervention
transition
Opis:
The article deals with the question whether the market needs to be regulated and if competition law is a desirable regulatory instrument for developing countries such as Georgia. This issue is not merely theoretical in nature, but reflects Georgia’s actual developments throughout the last decade when the country first repelled its existing antimonopoly law, since it was seen as unnecessary and hindering economic development, and yet later reintroduced it once again. For years Georgia was not regulating its market and, as the newly set up Competition Agency is starting to take its first steps, the question of the rationality for pro-competitive state intervention raises again. The chosen jurisdiction is unique for its unusual development path and history. It is even more special because of this particular point in time, witnessing the birth-phase of yet another competition law jurisdiction and the launching of its competition law enforcement authority. The article is dedicated to questions which are widely disputed in society, among politicians, in the media, within the local NGO sector etc. However, the academic community has not yet written much about them. This paper aims to fill this gap and encourage further academic discussion on this topic. Due to the limited number of academic sources and case-law in this field, a variety of sources has been used in this paper including: dissertations, reports of international organizations and local NGOs, personal interviews, blogs and so forth. The article is divided into sections. It starts by reviewing the evolution of competition law in Georgia and demonstrates its illogical development pattern. It moves on to outline the background and motivations present in Georgia at moments when breakthrough decisions were taken regarding its competition law regime. The article describes and analyses processes that took place on the un-regulated Georgian market in the last ten years. Based on the findings, it researches the question of the desirability of competition law, that is, whether Georgian market needs such state intervention, and what are the main challenges facing the effective enforcement of its recently adopted competition law.
Źródło:
Yearbook of Antitrust and Regulatory Studies; 2015, 8(11); 13-34
1689-9024
2545-0115
Pojawia się w:
Yearbook of Antitrust and Regulatory Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estymacja prawdopodobieństw przejścia między stanami zdrowia osóbw wieku 50 lat i więcej w Polsce w modelu wielostanowym
Autorzy:
Łątkowski, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/1827727.pdf
Data publikacji:
2015-12-05
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
transition probabilities
health
multi-state model
the elderly in Poland
Opis:
Poland will experience advanced population ageing driven by improvements in longevity, low fertility and retirement of baby boom cohorts. Given the higher morbidity prevalence observed at older ages, the demand for the elderly care is expected to increase. The study focuses on the dynamics of health of people aged 50 and over in Poland. We want to verify how the risks of the health status change are shaped over age and what the impact of sex is. The empirical analysis provides a description of a non-parametric multi-state model for transitions in health. The age- and sex-specific health transition rates and probabilities are estimated based on the European Union Statistics on Income and Living Conditions (EU-SILC) panel data for the years 2008–2011. The results confirm the well-known regularities in research on health: the risk of being unhealthy is increasing with age, while the probability of recovery is decreasing. Women have a higher risk of the onset of disability than men, whereas recovery to health is similar for men and women.
Źródło:
Studia Demograficzne; 2015, 168, 2; 25-37
0039-3134
Pojawia się w:
Studia Demograficzne
Dostawca treści:
Biblioteka Nauki
Artykuł

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