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Tytuł:
Spójność − kluczowe pojęcie dla współczesnej polityki społecznej (inspiracje, tropy i wyzwania)
Coherence – the Keyword for Contemporary Social Policy (inspirations, directions and challenges)
Autorzy:
Karwacki, Arkadiusz
Powiązania:
https://bibliotekanauki.pl/articles/2137433.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
coherence
the policy of coherence
cognitive coherence
structural coherence
social coherence
coherent social policy
spójność
polityka spójności
spójność poznawcza
spójność strukturalna
spójność społeczna
spójna polityka społeczna
Opis:
The article raises the issue of coherence as the main challenge as well as a deficit of the contemporary social policy. One of the basic ideas connected with the so-called active social policy is coherence, included in the EU policy of coherence that is being implemented. The policy of coherence is above all aims, ideas, directions, the indication of desired states with regard to funds for their realization. Can the challenges for the practice of coherence policy be built around the notion of 'coherence'? Can convergence, inclusion, equality and the stimulation of social capital be built in a coherent way? The author attempts to answer these questions indicating some challenges for the practice of social policy coming from the analysis of such terms as cognitive, structural, social and socio-economic coherence. The analysis leads to specification of the basic elements (challenges) of the practice of coherence policy, among which are the elimination of contradictions, internal integration, efficiency, control and rationality as well as positive attitudes. The consideration of the aims of social policy and the challenges for its practice (that is achieving these aims) allows to speak about coherent social policy, or the coherent policy of activation.
W artykule poruszony jest problem spójności jako kluczowe wyzwanie, a jednocześnie deficyt współczesnej polityki społecznej. Jedną z podstawowych idei związanych z tzw. aktywną polityką społeczną jest spójność, która wpisana jest w politykę UE. Polityka spójności to jednak przede wszystkim cele, idee, kierunki, wskazywanie pożądanych stanów z uwzględnieniem środków finansowych na ich realizację. Czy wokół pojęcia „spójność” można budować wyzwania dla praktyki polityki spójności? Czy konwergencja, inkluzja, równość i stymulowanie kapitału społecznego może być budowane w spójny sposób? Na te pytania staram się odpowiadać, wskazując na wyzwania dla polityki społecznej, płynące z analizy takich pojęć, jak spójność: poznawcza, strukturalna, społeczna i społeczno-ekonomiczna. Analiza ta prowadzi do wyznaczenia podstawowych elementów praktyki polityki spójności, czyli eliminacji sprzeczności, integracji wewnętrznej, sprawności, kontroli i racjonalności oraz pozytywnych postaw. Uwzględnianie celów polityki spójności oraz wyzwań dla jej praktyki (czyli osiągania tychże celów) pozwala mówić o spójnej polityce społecznej, bądź spójnej polityce aktywizacji.
Źródło:
Studia Socjologiczne; 2009, 1(192); 9-51
0039-3371
Pojawia się w:
Studia Socjologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Two-point resolution with spherical aberration quadratic amplitude filters
Autorzy:
Andra, N. K. R.
Khonina, S. N.
Powiązania:
https://bibliotekanauki.pl/articles/173845.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
coherence
apodization
superresolution
Opis:
The study deals with the effects of spherical aberration on the Airy distribution of two overlapping point images of equal- or unequal-intensities separated by the distances less than the Rayleigh angular limit of resolution investigated. Aberration considered in this work is the primary spherical aberration. By employing the quadratic amplitude apodization across the aperture, the high resolution is achieved in the form of resolving the two-point images, which is higher than that of the unapodized ones. In this investigation, the apodization mask applied to the aperture and the corresponding intensity distributions of two-point images have been studied numerically.
Źródło:
Optica Applicata; 2018, 48, 4; 549-561
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Social norms in the context of prevention and education. The study of social practice
Autorzy:
Budnik, M.
Powiązania:
https://bibliotekanauki.pl/articles/347424.pdf
Data publikacji:
2015
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
social norms
education
coherence
Opis:
The author of this article presents the process of defining social norms in the context of education. The author points to processes influencing the reduction of deviation circles by exploiting education while undertaking prevention measures. The examples of educational and information activities and the analysis of relations and forms of prevention and education in the context of social control are the revision of the coherence between the system of legal standards and social norms.
Źródło:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki; 2015, 4; 19-31
1731-8157
Pojawia się w:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integracja obszarów funkcjonalnych w aspekcie spójności terytorialnej i transgranicznych powiązań
Integration of functional areas in terms of territorial cohesion and cross-border linkages
Autorzy:
Czernik, L.
Powiązania:
https://bibliotekanauki.pl/articles/370144.pdf
Data publikacji:
2013
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
spójność przestrzenna
spatial coherence
Opis:
Peryferyjna lokalizacja ośrodka funkcjonalnego Szczecina w skali kraju wymaga realizacji rozwiązań na rzecz spójności w układzie synergicznych powiązań z potencjalnymi ośrodkami wzrostu kształtujących się krajowych obszarów metropolitalnych w układzie horyzontalnym oraz wertykalnym. Potrzeba bardziej ścisłej współpracy w ramach Euroregionu, dalszy aktywny udział w programach i projektach międzynarodowych warunkuje realną możliwość kształtowania stolicy regionu transgranicznego. Wzmocnienie struktur endogenicznych w obszarze transgranicznym obu państw jest priorytetowe, lecz wymaga również synchronicznego tworzenia sieci powiązań w relacjach transgranicznych dla wykorzystania ich możliwości w kształtowaniu regionalnej integracji przestrzennoosadniczej i gospodarczej.
The peripheral location of the functional center of Szczecin in the country requires the implementation of solutions for coherence in the system synergistic relationships with potential growth centers emerging national metropolitan areas in the horizontal and vertical system. The need for more close cooperation in the framework of the Euroregion, further active participation in international programs and projects determines the real possibility of formation the capital of transboundary metropolitan region. Enhancement of the endogenous transponder area of both countries constitutes a priority, but also requires synchronous networking connections in cross-border relations for their use in shaping the regional spatial - settlement structural and economic integration.
Źródło:
Przestrzeń i Forma; 2013, 20; 243-258
1895-3247
2391-7725
Pojawia się w:
Przestrzeń i Forma
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Les mots et les savoirs : complexité
Words and knowledge: complexity
Autorzy:
Blumenthal, Peter
Powiązania:
https://bibliotekanauki.pl/articles/31341182.pdf
Data publikacji:
2021-11-10
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
Knowledge
complexity
coherence
definition
Opis:
The contribution addresses a topic discussed since the 17th century by philosophers, logicians and lexicographers: to what extent does the semantic complexity of certain words convey knowledge of the extralinguistic world? What influence does this knowledge have on the coherence of a text? Conversely, another type of complexity must be taken into account as well, the one starting from things: what linguistic devices are adopted to express this complexity in an efficient way? The relationship between the complexity types and knowledge has been investigated by different strands of research in the humanities and is becoming a focus of multidisciplinary research.
Źródło:
Neophilologica; 2021, 33; 1-20
0208-5550
2353-088X
Pojawia się w:
Neophilologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The coherence method of technical state evaluation combustion engine
Autorzy:
Kałaczyński, T.
Powiązania:
https://bibliotekanauki.pl/articles/246199.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engines
coherence function
vibrodiagnostics
Opis:
The actual tendency to develop methods end techniques to diagnostic vehicles is making grow the interes f and the demand of the technical state analysis in exploration conditions, besides to systems, machines and devices more and more complex. The problem whit design and exploitation of modern machines and technical devices is to recognize the technical state in operational conditions [1-4]. To define the correct dynamic model and choose the best research method is the question of industry field, and the present paper has an approach about this topic. The coherence function which is the local measure of the similarity processes has, so the essential diagnostic properties in the reference to the objects which carry I will name linear and stationary in the field of the dynamic time. Yet the larger possibilities of uses of the diagnostic coherence functions can to find in mechanical arrangements non-stationaty or non-linear. The present methods of the diagnosing the condition of the folded objects combustion engines are which, are based on the measurements of the value steering currents. The vibrodiagnostic of combustion engines is the using analysis vibration processes generated in combustion engines the alternative method. Vibrodiagnostic enabling the opinion of the engine condition using the sensibility estimate the vibration process [l, 7-10]. The estimation of the combustion engine condition with sparkle ignition for the help of the research of vibration measures is possible thanks to utilization to the property of the coherence function [5, 6J. The implementation of software for needs: the acquisition of vibration processes, their processing, statistical inference and visualization - facilitates the leadership of investigations and the study of results.
Źródło:
Journal of KONES; 2010, 17, 1; 205-213
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poczucie koherencji a wypalanie się w zawodzie nauczyciela
Sense of coherence and teachers professional burnout
Autorzy:
Świętochowski, Waldemar
Powiązania:
https://bibliotekanauki.pl/articles/2139141.pdf
Data publikacji:
2004
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
professional burnout
sense of coherence
Opis:
Research on the relationship between sense of coherence according to Aaron Antonovsky’ theory of the sense of coherence and process of professional burning out is situated in the field of personal resources engaged in coping with organizational stress in helping proffessions. Two methods were used: The Maslach Burnout Inventory for educators and The scale of Sense of Coherence (SOC) by Antonovsky. MBI allows to measure three components of burn-out syndrome: emotional exhaustion, depersonalisation and the lack of personal accomplishment. SOC investigates three components of sense of coherence: sense of comprehensibility, manageability and meaningfullness. Statistical analysis of results was proceeded (analysis of correlations, variance and regression). Obtained results point on significant dependence of susceptibility for professional burning out (particularly emotional exhaustion) from components of sense of coherence. However the most interesting are results concerning the dependency between typological dynamics of coherence and professional burn-out.
Źródło:
Acta Universitatis Lodziensis. Folia Psychologica; 2004, 08; 55-66
2353-4842
Pojawia się w:
Acta Universitatis Lodziensis. Folia Psychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Context-governed meaning adjustment of phraseological units
Autorzy:
Krzyżanowska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/606277.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
updating, context, coherence, metaphor, polysemy, ambiguity
updating
context
coherence
metaphor
polysemy
ambiguity
Opis:
Das Volume enthält keine Abstracts in deutscher Sprache.
The article aims to show the role of the context and the situation of speaking (communication situation) in the process of updating the meaning of phraseological units (fixed expressions). It has been observed that in communication, disambiguation usually takes place by means of context. On the other hand, it turned out that the context itself can be a source of ambiguity. The results obtained in this short study seem to confirm the claim that the update is essentially a modal process, and the semantic coherence results from the interweaving of language, pragmatic, socio-cultural and cognitive constraints.
The article aims to show the role of the context and the situation ofspeaking (communication situation) in the process of updating themeaning of phraseological units (fixed expressions). It has been observed that in communication, disambiguation usually takes place by means of context. On the other hand, it turned out that the context itself can be a source of ambiguity. The results obtained in this short study seem to confirm the claim that the update is essentially a modal process, and the semantic coherence results from the interweaving of language, pragmatic, socio-cultural and cognitive constraints.L’objectif de cet article est de  mettre en évidence l’impact du co(n)texte et de la situation d’énonciation lors de l’actualisation du sens des expressions figées. On a pu observer que, dans la communication, la désambiguïsation se fait normalement à l’aide du contexte. Mais d’autre part, il s’est avéré que c’est le contexte, lui-même qui peut être source de l’ambiguïté.Les résultats obtenus au terme de cette brève étude semblent confirmer aussi le fait que l’actualisation constitue un processus foncièrement modal, et que la cohérence sémantique relève d’une imbrication de contraintes linguistiques, pragmatiques, socio-culturelles et cognitives.
Том не содержит аннотаций на русском языке.
Źródło:
Lublin Studies in Modern Languages and Literature; 2018, 42, 4
0137-4699
Pojawia się w:
Lublin Studies in Modern Languages and Literature
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sind Aphorismen hypertextuell? Zur konzeptionellen Hypertextualität analoger Texte
Are Aphorisms Hypertextual? Conceptional Hypertextuality of Analog Texts
Autorzy:
Szczepaniak, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/567986.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Mikołaja Kopernika w Toruniu. Wydawnictwo UMK
Tematy:
text
coherence
aphorism
hypertext
hypertextuality
Opis:
The following article is an attempt to point out the conceptional similarities between two medially distinct kinds of text - the aphorism and the hypertext. The basis for achieving this aim is the concept of coherence. This article supports a broader, process-oriented concept of coherence, which involves the reader as the creator of coherence. The analysis concetrates on the aphorism, with its fragmentary structure, which demandrs participation in constructiong the sense of the text. An attempt is made to exemplify the conceptional hypertextuality of such texts with some aphorisms of K. Kraus, E. Canetti and S. J. Lec.
Źródło:
Linguistica Copernicana; 2015, 12; 271-286
2080-1068
2391-7768
Pojawia się w:
Linguistica Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automatic effects of processing fluency in semantic coherence judgments and the role of transient and tonic affective states
Autorzy:
Sweklej, Joanna
Balas, Robert
Pochwatko, Grzegorz
Godlewska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/430396.pdf
Data publikacji:
2015-03-01
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
semantic coherence judgments
automaticity
affect
mood
Opis:
Recent literature reported that judgments of semantic coherence are influenced by a positive affective response due to increased fluency of processing. The presented paper investigates whether fluency of processing can be modified by affective responses to the coherent stimuli as well as an automaticity of processes involved in semantic coherence judgments. The studies employed the dyads of triads task in which participants are shown two word triads and asked to solve a semantically coherent one or indicate which of the two is semantically coherent. Across two studies in a dualtask paradigm we show that a) attentional resources moderate insight into semantically coherent word triads, whereas b) judgments of semantic coherence judgments are independent of attentional resources. We discuss implications of our findings for how people might form intuitive judgments of semantic coherence.
Źródło:
Polish Psychological Bulletin; 2015, 46, 1; 151-158
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of impulse response of shallow water communication channel by correlation method
Autorzy:
Schmidt, J.
Kochańska, I.
Schmidt, A.
Powiązania:
https://bibliotekanauki.pl/articles/331786.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
underwater communications
impulse response
delay spread
Doppler spread
coherence time
coherence bandwidth
PRBS
HFM
Opis:
Performances of underwater acoustic communication (UAC) systems are strongly related to specific propagation conditions of the underwater channel; conditions that can additionally change in time due to the movement of the acoustic system transmitter and receiver or to reflection by underwater objects of the transmitted signal. The time-varying impulse response is a comprehensive description of dynamically changing transmission properties of the UAC channel. It is a basis for estimation of stochastic parameters used for designing the signaling scheme of the communication system. The paper presents the results of a measurement experiment conducted in a shallow water environment. The channel impulse response was measured by the correlation method with the use of two kinds of broadband signals: pseudo-random binary sequence (PRBS) and hyperbolic frequency modulation chirp (HFM). For each measurement result statistical transmission parameters, namely delay spread, Doppler spread, coherence time, and coherence bandwidth were estimated.
Źródło:
Hydroacoustics; 2017, 20; 149-158
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Second Order Coherence: A new way of looking at incoherence in texts
Autorzy:
Ulbaek, Ib
Powiązania:
https://bibliotekanauki.pl/articles/1040206.pdf
Data publikacji:
2016-12-30
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II
Tematy:
text linguistics
coherence
text analysis
pragmatics
Opis:
By using van Dijk’s concept of coherence and bringing it together with my Principle of meaning iconicity, we have a new way of looking at incoherence in texts. The principle says that closely related information is meaningfully related on a pragmatic level, an instruction to the reader to relate the information to each other. It is demonstrated by textual analysis that the concept of coherence can be used analytically by dividing it into first and second order coherence. First order coherence is the usual concept of coherence: sentences are connected by cohesive links and related by causality, time etc. Second order coherence is a way of organizing text by using incoherence as a way of organizing text into chunks of coherent parts. It is shown how readers can detect these structures in the text by detecting the incoherence even without the layout of the text to signal structure (e.g. indention of paragraphs).
Źródło:
Linguistics Beyond and Within; 2016, 2; 167-179
2450-5188
Pojawia się w:
Linguistics Beyond and Within
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sense of coherence and resilience for coping with stress in the group of juveniles referred to probation centres by family courts
Autorzy:
Konaszewski, Karol
Kwadrans, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/1789793.pdf
Data publikacji:
2020-05-27
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
coherence
resilience
juveniles
probation centres
coping
Opis:
The aim of this study was to analyse the relationship between the sense of coherence and resilience and the styles of stress coping and to determine which of the studied variables (comprehensibility; manageability; meaningfulness; optimistic attitude and energy; perseverance and determination in action; sense of humour and openness to new experiences; personal competences and tolerance of negative affect) was more important in predicting coping styles with stressful situations in the group of juveniles who had been referred to probation centres. Participants in this study were 210 juveniles from probation centres. The following research tools were used in the research: A. Antonovsky’s Orientation to Life Questionnaire, Resilience Scale by N. Ogińska-Bulik and Z. Juczyński, and Coping Inventory for Stressful Situations by N. S. Enlder and J. D. A. Parker. The research results show that sense of coherence and resilience play a predictive function for the style which focuses on the task, emotions, avoidance and strategy related to engaging in substitute activities and seeking contact with people. Building (by probation officers) the sense of coherence and resilience among juveniles involves better understanding of the surrounding world and the stimuli which come from it, understanding internal signals and increasing the sense of manageability and comprehensibility, enhancing the ability to use the own and the environmental resources as well as working on the sense of meaningfulness, i.e. the motivational aspect of functioning. Supporting components of resilience (optimistic attitude and energy; perseverance and determination in action; sense of humour and openness to new experiences; personal competences and tolerance of negative affect) through psychoeducational activities (in probation centres) enables better understanding of the own self and, consequently, using stress management strategies aimed at finding a positive solution to a particular situation.
Źródło:
Kwartalnik Pedagogiczny; 2020, 65(1 (255)); 134-159
0023-5938
Pojawia się w:
Kwartalnik Pedagogiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poczucie koherencji a zadowolenie z życia u kobiet i mężczyzn na emeryturze
Sense of coherence and life satisfaction in retired men and woman
Autorzy:
Pasik, Maria
Powiązania:
https://bibliotekanauki.pl/articles/2139566.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
retirement
sense of coherence
life satisfaction
Opis:
The aim of the study was to analyze the relationship between sense of coherence (SOC) and life satisfaction in retired men and women, who stopped working. 120 retirees (60 men, 60 women) were examined using following techniques: The Sense of Coherence Questionnaire (SOC- 29) by A. Antonovsky, The Satisfaction with Life Scale (SWLS) by Diener et al. and The Scale “Emotions” by Wojciszke et al. The results point on differences between retired men and woman in the level of life satisfaction and sense of coherence (in favor of men). Moreover the relationship between sense of coherence (SOC) and life satisfaction was found in both groups. But the results suggest, that this relationship looks different in retired men then women.
Źródło:
Acta Universitatis Lodziensis. Folia Psychologica; 2007, 11; 67-79
2353-4842
Pojawia się w:
Acta Universitatis Lodziensis. Folia Psychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The pragmatics of casual dialogue
Autorzy:
Warchala, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/468274.pdf
Data publikacji:
2015
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
casual dialogue
coherence
completeness
extralinguistic factors
Opis:
In this paper, the author presents the relationships of dialogue and then characterizes dialogue as a text. In dialogue’s characteristics, it is necessary to distinguish its units and both obligatory and optional elements. The author notes that a lively and spontaneous dialogue is dependent on various extralinguistic factors as well as accident.
Źródło:
Forum Lingwistyczne; 2015, 2; 97-119
2449-9587
2450-2758
Pojawia się w:
Forum Lingwistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Axiomatic extension of risk measurement
Aksjomatyczne rozszerzenie pomiaru ryzyka
Autorzy:
Khemissi, Eliza
Powiązania:
https://bibliotekanauki.pl/articles/425304.pdf
Data publikacji:
2017
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
axioms of risk measure
coherence
VaR
ES
Opis:
In the article the author introduce the additional axiom of measure of risk and checks, mathematically proving, which well-known functions of risk fulfill this additional axiom. This will be conducted for functions such as: Value at Risk, Expected Shortfall, Median, Absolute Median Deviation, Maximum, Maximum Loss, Half Range, and Arithme- tic Average. In other words, the purpose of the paper is studying which of the above func- tions fulfill the additional axiom of measure of risk, which can enrich Arzner’s and other axioms. This axiom is not a consequence of Arzner’s and other axioms. Furthermore, the author researches mathematically if the mentioned functions of risk retain their properties after replacing the partial order with the stochastic order. Finally the author presents the new measure of risk which fulfills all the axioms of measure of risk and the additional axiom.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2017, 2 (56); 116-126
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Readout System and Data Processing for OCT Pachymetry
Autorzy:
Dziewiecki, M.
Domański, G.
Frey, W.
Konarzewski, B.
Kurjata, R.
Marzec, J.
Smolnik, A.
Zaremba, K.
Ziembicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/226782.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
optical coherence tomography
pachymetry
optical signal detection
Opis:
A complete system for measurement control, signal acquisition and data processing for an OCT pachymeter is described. Moreover, dedicated data processing algorithm used for noise reduction is presented. A simple OCT scanner was built and some measurements were performed to examine the capabilities of the system.
Źródło:
International Journal of Electronics and Telecommunications; 2010, 56, 3; 223-230
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selection of sound insulating elements in hydraulic excavators based onidentification of vibroacoustic energy propagation paths
Autorzy:
Dąbrowski, Z.
Dziurdź, J.
Pakowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/177189.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
noise and vibration
propagation path
coherence function
Opis:
In spite of the fact that standardizing operations and increased awareness of hazards led to a significant improvement of vibroacoustic climate of operator’s stands of new machines, their long-term operation - often under difficult conditions - leads to a fast degradation of acoustic qualities of machines. Temporary operations performed during surveys and periodical overhauls are rarely effective, due to the lack of any guidelines. In this situation the authors propose the algorithm for selection of eventual screens or sound absorbing and sound insulating partitions, utilizing the measuring procedure aimed at identification, at the operator’s stand, of main noise components originated from various sources. On the basis of this procedure, the vibroacoustic energy propagation paths in the machine was estimated.
Źródło:
Archives of Acoustics; 2013, 38, 4; 471-478
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coaching a poczucie koherencji
Coaching and The Sense of Coherence
Autorzy:
Worsztynowicz, Anna Iwona
Powiązania:
https://bibliotekanauki.pl/articles/2138044.pdf
Data publikacji:
2013-09-09
Wydawca:
Wydawnictwo Naukowe Dolnośląskiej Szkoły Wyższej
Tematy:
coaching
poczucie koherencji
the sense of coherence
Opis:
Celem artykułu jest zaprezentowanie idei wykorzystania coachingu jako metody poprawy poziomu poczucia koherencji osób dorosłych. Poczucie koherencji jest centralnym konstruktem Modelu Salutogenezy Aarona Antonovsky’ego. Zgodnie z tym modelem poczucie koherencji jest kluczowym determinantem zdrowia. Idea Antonovsky`ego została potwierdzona przez większość uznanych badań. Nadal jednak pozostaje do rozwiązania ważna kwestia poprawy poczucia koherencji osób dorosłych. Czy uzasadnione jest rozważanie wykorzystania coachingu jako skutecznej metody poprawy SOC?
The main goal of this article is to explain the idea of using coaching as a method of improving the level of the sense of coherence in the group of adult people. The sense of coherence is the central construct of Aaron Antonovsky`s Salutogenic Model. According to this model, the sense of coherence is the key determinant of health. Most relevant research supports Antonovsky`s idea, but there is still another important problem to solve: how to improve the strength of the sense of coherence in the group of adult people. Is it reasonable to consider using coaching as a forceful method of improving the SOC?
Źródło:
Forum Oświatowe; 2013, 25, 2(49); 41-55
0867-0323
2450-3452
Pojawia się w:
Forum Oświatowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Emotional State in Relation to Physical Activity Among Older People
Autorzy:
Błaszczak, Agnieszka
Dołowy, Ewa
Muszyński, Siemowit
Powiązania:
https://bibliotekanauki.pl/articles/1030647.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
aging
anxiety
physical activity
sense of coherence
Opis:
Old age is a stage in human life associated with alteration of physical, mental and social functioning. The aim of this study was to investigate the associations between regular physical activity (PA) and purpose of life, intensity of depressive moods, sense of coherence (SoC) and the level of anxiety in older adults. Forty six individuals physically active (A) and 49 physically inactive (NA) without mental or physical disability were included in the study. The purpose of life was assessed by Purpose of Life Scale (PIL), intensity of depressive moods by Beck Depression Inventory (BDI), SoC by Antonovsky’s questionnaire and level of anxiety by State-Trait Anxiety Inventory (STAI). An AN individuals had lover BDI-feelings level compared with A group (p < 0.05). The AN group also showed a significantly lower scores in anxiety-feature domain of the STAI (p < 0.05). Our results suggest that improved self-perceived quality of life is significantly associated to PA among older adults and regular PA may be effective for improving depression and anxiety symptoms in older adults. A better understanding of the relationship between the PA and depressive moods and level of anxiety is important to develop recommendations regarding modifications in life-style.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2019, 25, 1; 63-72
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluating the Coherence of a Cinematic Universe as a Prerequisite for Worldmaking in Digital Cinema
Autorzy:
Dimitriadis, Giorgos
Powiązania:
https://bibliotekanauki.pl/articles/1964522.pdf
Data publikacji:
2018
Wydawca:
Ośrodek Badawczy Facta Ficta
Tematy:
coherence
cinematic universe
cognition
CG
worldmaking
franchise
Źródło:
Facta Ficta. Journal of Theory, Narrative & Media; 2018, 2, 2; 53-70
2719-8278
Pojawia się w:
Facta Ficta. Journal of Theory, Narrative & Media
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coherence Problems of EFL Students’ Writing in Light of the Gricean Maxims
Autorzy:
Khonamari, Fatemeh
Hashemi, Ehsan
Pavlikova, Martina
Petrasova, Bozena
Powiązania:
https://bibliotekanauki.pl/articles/1878471.pdf
Data publikacji:
2021-09-25
Wydawca:
Fundacja Pro Scientia Publica
Tematy:
coherence
writing skills
Gricean maxim
EFL learners
Opis:
Aim. In academic writing, lack of coherence is thought to occur mostly due to the lack of necessary linguistic skills and knowledge in L2. Thus, the analysis of a written text is concerned with understanding the local relations among the ideas conveyed in a text. Concept. As is usually the case, students writing in a second language generally produce texts that contain varying degrees of grammatical and rhetorical errors. Most of the studies have been conducted with only one criterion for the analysis of coherence and they reported different results. Also, most of them have been conducted on a small scale in terms of the number of participants, and writing samples collected. Therefore, this study tries to investigate the coherence problems/errors of university students in their writing, if any, on a fairly large scale in light of the Cooperative principle and its maxims. Results and conclusion. The study revealed that the basic problem of the students in their essay writing was the way the text should be structured with reference to how cohesion and coherence are established. In the analysis of maxim violations, the violation of the Quality maxim was identified as making overgeneralisations or giving inadequate or no evidence/support for the claims/ideas. The violation of the Quality maxim indicates that students tend to do it due to their linguistic inadequacies.
Źródło:
Journal of Education Culture and Society; 2021, 12, 2; 294-313
2081-1640
Pojawia się w:
Journal of Education Culture and Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shifts of Cohesion and Coherence in Several Polish Translations of G.K. Chesterton
Autorzy:
Reda, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/888836.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
coherence
cohesion
translation
polysemy
Chesterton, G. K.
Opis:
The paper is concerned with shifts of cohesion and coherence in several Polish translations of G. K. Chesterton from the point of view of the procedural approach, in which the choice of particular linguistic/textual devices is indicative of the text producer’s intended meaning. As regards cohesion, the paper touches upon lexical cohesion and conjunction. It discusses the eff ects of replacing repetition with variation, and of disambiguating and explicating conjunctions. As for coherence, an analysis is carried out which shows how the translator’s failure to render a polysemous word adequately detracted from the TT’s coherence. Also, an example is given of coherence being affected by polysemy in the TT. The aim of the paper is to find out what kind of issues and regularities connected with cohesion and coherence emerge in the translation process and how these affect target texts.
Źródło:
Anglica. An International Journal of English Studies; 2017, 26/2; 151-170
0860-5734
Pojawia się w:
Anglica. An International Journal of English Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intraoperative imaging based on common-path time-domain reflectometry for brain tumor surgery
Autorzy:
Han, Jae-Ho
Cha, Jaepyeong
Powiązania:
https://bibliotekanauki.pl/articles/174648.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
optical coherence tomography
intraoperative imaging
reflectometry
endoscopy
Opis:
Minimally invasive intraoperative imaging plays a crucial role in delicate microsurgeries for precise operation monitoring in which fiber optic imaging can be considered as an endoscopy and surgical proximity guidance tool due to its compactness. This paper presents a near-infrared time-domain reflectometric common-path optical coherence tomography imaging technique using a bare-fiber probe mounted directly on a scanning galvanometer. The common-path setup allows the use of a freely adjustable optical path length and a disposable fiber probe, as well as eliminating the need for an additional dedicated reference optical path. Experimental results demonstrate clear discrimination between the brain tumor tissue and the normal tissue for mouse brains with the images acquired in real-time over a wide area. The proposed method enables real-time and in situ visualization of tumor resection for intraoperative imaging, and this study demonstrates the feasibility of its application to microsurgical interventions.
Źródło:
Optica Applicata; 2020, 50, 2; 223-227
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of motion peculiarities of particles of the Rayleigh light scattering mechanism for defining the coherence properties of optical fields
Autorzy:
Zenkova, C
Soltys, I
Angelsky, P
Powiązania:
https://bibliotekanauki.pl/articles/173481.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
degree of coherence
nanoparticles
Poynting vector
light scattering
Opis:
The paper proposes an alternative possibility for using the motion dynamics of tested particles of the Rayleigh light-scattering mechanism for estimating the degree of coherence of mutually orthogonal fields. The velocity of nanoparticles motion in the inhomogeneous optical field is chosen as the measuring parameter for diagnostics. The direct connection between the velocity of nanoscale particle motion and the degree of coherence of interacting fields is analytically demonstrated.
Źródło:
Optica Applicata; 2013, 43, 2; s. 297-312
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of spontaneously generated coherence and phase of laser fields on optical bistability in a three-level atomic medium: an analytical approach
Autorzy:
Van, Doai Le
Minh, Phuong Le Thi
Tien, Dung Nguyen
Xuan, Khoa Dinh
Huy, Bang Nguyen
Powiązania:
https://bibliotekanauki.pl/articles/174730.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
optical bistability
electromagnetically induced transparency
spontaneously generated coherence
Opis:
The influence of spontaneously generated coherence and relative phase of laser fields on optical bistability in a three-level atomic medium under electromagnetically induced transparency was studied by using a density matrix theory. An input-output intensity relation of a probe laser field is derived as an analytical function of parameters of a controlling light field, the relative phase, and the spontaneously generated coherence. This function can be fitted with experimental values to be a semi-empirical model which is helpful for finding related applications. It is shown that thresholds and width of the optical bistability hysteresis loop can be manipulated with the controllable parameters. On the other hand, the influence of population relaxation between two ground hyperfine levels on the optical bistability behavior is significant for small coupling field intensity.
Źródło:
Optica Applicata; 2019, 49, 3; 509-522
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Persuasive functions of photo galleries on information websites
Autorzy:
Kampka, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/650168.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
online gallery
rhetorical analysis
persuasion
coherence markers
narrativeness
Opis:
The article presents a rhetorical analysis of online galleries. The author argues that the selection of photographs presented in a gallery serves the purpose of fulfilling a persuasive goal. That is proved by, as indicated in the analysis, the verbal and visual markers of coherence, and the narrativeness visible at the level of individual photographs, groups of photographs, and the entire gallery.
Źródło:
Acta Universitatis Lodziensis. Folia Litteraria Polonica; 2017, 43, 5
1505-9057
2353-1908
Pojawia się w:
Acta Universitatis Lodziensis. Folia Litteraria Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zaburzenia spójności wypowiedzi w schizofrenii w świetle teorii konotacji
Disorders of the coherence of expression in schizophrenia in the light of the connotation theory
Autorzy:
Lipski, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/2165641.pdf
Data publikacji:
2022-07-18
Wydawca:
Polskie Towarzystwo Logopedyczne
Tematy:
schizofazja
konotacja
spójność
kolokacja
schizophasia
connotation
coherence
collocation
Opis:
Artykuł dotyczy zaburzeń spójności wypowiedzi wynikających z nieprzestrzegania obowiązujących w języku zasad konotacji przez osoby chorujące na schizofrenię. Autor dokonuje prezentacji teorii konotacji, eksplikując znaczenie tego pojęcia oraz jego profil w badaniach zaburzeń językowych w schizofrenii. W części empirycznej przedstawione zostały przykłady wypowiedzi schizofatycznych prezentujące zaburzenia konotacji na różnym poziomie złożoności składniowej. Autor wyróżnia dwie podstawowe przyczyny zaburzeń konotacji w schizofazji: użycie wyrazu występującego w języku w odmiennym niż powszechnie znaczeniu (neosemantyzm) oraz użycie wyrazu stanowiącego nowy twór, niewynikający z obowiązujących w języku procesów słowotwórczych (neologizm idiolektalny).
The article concerns disorders in coherence of expression which results from the non-compliance with the rules of connotation in the language by people suffering from schizophrenia. The author presents the theory of connotation, by explaining the meaning of the concept and its profile in the study of language disorders in schizophrenia. The empirical part of the article presents examples of schizophatic statements, which presents the connotation’s disturbances at various levels of syntactic complexity. The author distinguishes two fundamental causes of connotation’s disturbances in schizophasia, which are the use of a word that occurs in a language in a different sense than it is commonly used (neosemantism) and the use of a word that is a new creation, which do not results from the word-formation’s processes in the language (idiolectal neologism).
Źródło:
Logopedia; 2022, 51, 1; 43-60
0459-6935
Pojawia się w:
Logopedia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coherence and Comparability as Criteria of Quality Assessment in Business Statistics
Autorzy:
Młodak, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/466016.pdf
Data publikacji:
2013
Wydawca:
Główny Urząd Statystyczny
Tematy:
coherence
comparability
mirror statistics
benchmarking
data precision
complex indices
Opis:
The problems of coherence and comparability exceed the classical notion of analysis of survey errors, because they do not concern single surveys or variables but the question of how results of two or more surveys can be used together and how relevant data can effectively be compared to obtain a better picture of social and economic phenomena over various aspects, e.g. space or time. This paper discusses characteristics of the main concepts of coherence and comparability as well as a description of differences and similarities between these two notions. Types of coherence and various aspects of perception of these notions in business statistics are analysed. Main sources of lack of coherence and comparability, factors affecting them (e.g. methodology, time, region, etc.) and methods of their measurement in context of information obtained from businesses will be also presented.
Źródło:
Statistics in Transition new series; 2013, 14, 2; 287-318
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Personal resources in coping with stress among paramedics Part 1
Autorzy:
Netczuk-Gwoździewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/348465.pdf
Data publikacji:
2017
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
personal resources
sense of coherence
paramedic
coping with stress
Opis:
The concept of personal resources is used in health psychology in reference to all the factors that help in coping with stress. Moos and Schafer define personal resource as: ‘relatively stable personal and social factors, which influence the way the individual tries to tackle life crises and stress transactions’. Many researchers count the following as important personal resources: social support, ways of coping with stress, self-esteem and self-efficacy, sense of coherence, level of optimism, ability to act assertively, locus of control. Paramedics can be associated with jobs requiring above-average level of both health and psychological costs. Thus, determination of the relation between the sense of coherence and ways of coping with stress will be the subject of this project.
Źródło:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki; 2017, 4; 138-155
1731-8157
Pojawia się w:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Świadomi rodzice i ich poczucie koherencji w wychowaniu w świetle koncepcji Anthonovsky’ego
Conscious parents and their sense of coherence in education in the light Anthonovsky’s concept
Autorzy:
Banach, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/2127400.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Wrocławski. Wydział Nauk Historycznych i Pedagogicznych. Instytut Pedagogiki. Zakład Historii Edukacji
Tematy:
rodzicielstwo
świadomość
poczucie koherencji
parenthood
awareness
sense of coherence
Opis:
Cel. W artykule zawarto rozważania nad współczesnym rodzicielstwem, świadomością i odpowiedzialnością w wychowaniu. Świadomość wychowawczą poprzedza świadomość odpowiedzialności za tworzenie rodziny, jej klimatu i warunków życia dla wszystkich domowników. Wychowanie realizowane w sposób świadomy, prowadzące do osiągnięcia zamierzonych skutków, wymaga spełnienia określonych warunków. Oddziaływania wychowawcze podlegają określonym prawom i regułom, których respektowanie w znacznym stopniu decyduje o przebiegu procesu wychowania. Odpowiedzialność za wychowanie jest ściśle powiązana z odpowiedzialnością rodzicielską, której podstawową cechę stanowi totalność przejawiająca się we wszystkich aspektach życia dziecka. Rodzicielstwo to także troska o właściwy rozwój społeczny dziecka i posiadanie przez nie umiejętności społecznych. W artykule odniesiono się do koncepcji poczucia koherencji A. Antonovsky’ego, którą można z powodzeniem przenieść na grunt pedagogiki i zastosować również w odniesieniu do procesu wychowania. Materiały i metody. Przegląd i analiza literatury przedmiotu. Wnioski. Analiza literatury i dotychczasowych badań pozwala na stwierdzenie, że koncepcja koherencji Anthonovsky’ego może być rozpatrywana z perspektywy pedagogicznej i zastosowana w odniesieniu do procesu wychowawczego, umożliwiając większą skuteczność oddziaływań wychowawczych.
Aim. The article contains reflections on modern parenting, awareness, and responsibility in education. Educational awareness precedes the awareness of responsibility for creating a family, its climate, and living conditions for all household members. Education carried out in a conscious manner, leading to the achievement of intended effects requires fulfillment of certain conditions. Educational impacts are subject to specific laws and rules. Respecting them largely determines the course of the educational process. Responsibility for upbringing is closely linked to parental responsibility, the basic feature of which is totality manifesting itself in all aspects of the child’s life. Parenthood is also a concern for the child’s proper social development and social skills. In the article, I referred to the concept of A. Antonovsky’s sense of coherence, which can be successfully transferred to pedagogy and also applied to the process of education. Materials and methods. Review and analysis of the literature on the subject. Conclusions. The analysis of the subject literature and the research to date allows for the conclusion that the concept of Anthonovsky’s coherence can be considered from the pedagogical perspective and applied in relation to the educational process, enabling greater effectiveness of educational interactions.
Źródło:
Wychowanie w Rodzinie; 2019, XXI, (2/2019); 189-212
2082-9019
Pojawia się w:
Wychowanie w Rodzinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Osobowościowe korelaty wyznaczników kompetencji temporalnych – interpretacja wyników analizy kanonicznej
Personality correlates of temporal competence: The interpretation of canonical analysis results
Autorzy:
Tucholska, Kinga
Powiązania:
https://bibliotekanauki.pl/articles/2128970.pdf
Data publikacji:
2019-03-27
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Tematy:
temporal competence
sense of coherence
self-concept
„Big Five”
Opis:
W prezentowanym projekcie badawczym poszukiwano odpowiedzi na pytanie o zakres i stopień współzależności pomiędzy kompetencjami temporalnymi (ujmowanymi Kwestionariuszem Kompetencji Temporalnych Z. Uchnasta i K. Tucholskiej) a wybranymi wymiarami osobowości, mierzonymi: Kwestionariuszem Poczucia Koherencji SOC-29 A. Antonovsky’ego, Testem Przymiotnikowym ACL H. G. Gougha i A. B. Heilbruna oraz Inwentarzem Osobowości NEO-PI-R P. T. Costy i R. R. McCrae. Zgromadzone w toku badań wyniki 239-osobowej grupy studentów poddano analizie korelacji kanonicznej. Przeprowadzone analizy dały postawy do dokładnego określenia osobowościowych korelatów kompetencji w przeżywaniu czasu. W świetle prezentowanych badań kompetencje temporalne okazują się zmienną istotną dla diagnozowania adekwatności funkcjonowania i skuteczności działania jednostki.
The objective of research was to establish the range of interdependence between temporal competence (as measured by Temporal Competence Inventory developed by Uchnast and Tucholska) and selected psychological variables measured by Questionnaire of the Sense of Coherence (SOC-29) developed by Antonovsky, Adjective Check List (ACL) by H. G. Gough and A. B. Heilbrun, Revised NEO Personality Inventory developed by P T. Costa and R. R. McCrae. The procedure of canonical analysis was used to analyze the data collected during the study from a group of 239 students. It follows from the presented analyses that the way of experiencing time and the person’s attitude to time in its three dimensions remain in evident linkage to intrapsychic and interpersonal functioning. Therefore, temporal competences can be treated as predictors of efficient and adequate functioning.
Źródło:
Roczniki Psychologiczne; 2007, 10, 1; 27-57
1507-7888
Pojawia się w:
Roczniki Psychologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wideband spectral emission measurements from laser-produced plasma EUV/SXR source based on a double gas puff target
Autorzy:
Arikkatt, Antony Jose
Wachulak, Przemysław
Fiedorowicz, Henryk
Bartnik, Andrzej
Czwartos, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1849155.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Plasma Spectroscopy
X-ray coherence tomography
soft X-ray
Opis:
We present spectral emission characteristics from laser-plasma EUV/SXR sources produced by irradiation of < 1 J energy laser pulse on eleven different double stream gas puff targets, with most intense electronic transitions identified in the spectral range from 1 nm to 70 nm wavelength which corresponds to photon energy from 18 eV to 1240 eV. The spectra were obtained using grazing incidence and transmission spectrographs from laser-produced plasma emission, formed by the interaction of a laser beam with a double stream gas puff target. Laser pulses with a duration of 4 ns and energy of 650 mJ were used for the experiment. We present the results obtained from three different spectrometers in the wavelength ranges of SXR (1-5.5 nm), SXR/EUV (4-15.5 nm), and EUV (10-70 nm). In this paper, detailed information about the source, gas targets under investigation, the experimental setup, spectral measurements and the results are presented and discussed. Such data may be useful for the identification of adequate spectral emissions from gasses in the EUV and SXR wavelength ranges dedicated to various experiments (i.e. broadband emission for the X-ray coherence tomography XCT) or may be used for verification of magnetohydrodynamic plasma codes.
Źródło:
Metrology and Measurement Systems; 2020, 27, 4; 701-719
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of retina vessels by segmentation of images reconstructed from optical coherence tomography data
Autorzy:
Marciniak, Tomasz
Stankiewicz, Agnieszka
Dąbrowski, Adam
Stopa, Marcin
Rakowicz, Piotr
Marciniak, Elżbieta
Powiązania:
https://bibliotekanauki.pl/articles/220715.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
optical coherence tomography
image processing
mathematical morphology
vessel segmentation
Opis:
In this paper methods and their examination results for automatic segmentation and parameterization of vessels based on spectral domain optical coherence tomography (SD-OCT) of the retina are presented. We present three strategies for morphologic image processing of a fundus image reconstructed from OCT scans. A specificity of initial image processing for fundus reconstruction is analysed. Then, the parameterization step is performed based on the vessels segmented with the proposed algorithm. The influence of various methods on the vessel segmentation and fully automatic vessel measurement is analysed. Experiments were carried out with a set of 3D OCT scans obtained from 24 eyes (12 healthy volunteers) with the use of an Avanti RTvue OCT device. The results of automatic vessel segmentation were numerically compared with those prepared manually by the medical doctor experts.
Źródło:
Metrology and Measurement Systems; 2019, 26, 3; 449-461
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Nonfoundational Reasoning
Autorzy:
Brożek, Bartosz
Powiązania:
https://bibliotekanauki.pl/articles/691114.pdf
Data publikacji:
2014
Wydawca:
Copernicus Center Press
Tematy:
nonfoundational reasoning
foundationalism
hermeneutics
belief revision
coherence
defeasible logic
Opis:
The goal of the paper is to describe the role and structure of nonfoundational reasoning, i.e. a kind of argumentation that meets the revisability, the feedback, the background stability and the disputability conditions. I begin by observing that any nonfoundational reasoning has two components: the deductive and the hermeneutic. Next, against the background of Gadamer’s insightful, although somewhat vague, observations I attempt to uncover aspects of the hermeneutic component. I then proceed to reconstruct nonfoundational argumentation with the help of formal theory of belief revision, defeasible logic, and logical conception of coherence. Finally, I argue that nonfoundational reasoning is the backbone of both scientific endeavours and philosophical inquiry.
Źródło:
Zagadnienia Filozoficzne w Nauce; 2014, 56; 5-32
0867-8286
2451-0602
Pojawia się w:
Zagadnienia Filozoficzne w Nauce
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Role of Cohesion in Text Creation
Autorzy:
Jassim, Abdulmalek Hammed
Powiązania:
https://bibliotekanauki.pl/articles/2196168.pdf
Data publikacji:
2023-05-25
Wydawca:
Akademia Pedagogiki Specjalnej. Language and Society Research Committee
Tematy:
grammatical cohesion
coherence
conjunctions
lexical linking
surface structure
textuality
Opis:
This paper aims at exploring the role of cohesion in persuading listeners through answering the following questions; what types of grammatical cohesive relations are displayed and what is their frequency of occurrence in the sampled text? and how does cohesion contribute to the creation and understanding of a text? A program for corpus analysis called (AntConc Tutorial (Ver. 3.2.4) developed by Laurence Anthony (Anthony, L., 2004) is used for analyzing the sample of this study which will be the speech of the Singaporean prime minister, Lee Hsien Loong, on the COVID-19 ‘New Normal’, on 31 May 2021 (Appendix A). The study devotes attention to the speech of the Singaporean prime minister on this occasion due to the importance of this event which occupied the world. This paper depends on Halliday and Hasan’s (1976) taxonomy of cohesive devices to analyze data.
Źródło:
Language, Discourse & Society; 2023, 11, 1; 159-170
2239-4192
Pojawia się w:
Language, Discourse & Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ponowoczesne wzory osobowe
THE PATTERNS OF POST-MODERN IDENTITY
Autorzy:
Bauman, Zygmunt
Powiązania:
https://bibliotekanauki.pl/articles/427575.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
COHERENCE
FREEDOM
IDENTITY (THE PATTERS OF)
POST-MODERNITY
Opis:
Incoherence and lack of consequence in endeavors, fragmentation and scattering of various domains of individual's activity appear to be unalienable attributes of 'post-modern' life style. The article contains the characteristic of the four types of post-modern self: the stroller (flâneur), the vagabond, the tourist and the player. Although these types were known in previous epochs, there are two factors that render them 'post-modern': (1) the fact that they have become a 'norm' of behavior in everyday life while previously their role was rather marginal; (2) their simultaneous co-occurrence in the lives of the same people in the same fragments of life, while in 'pre-modern' times their presence in the life of individuals was disjunctive - they were subject to choice; presently one does not choose among them, what is more one does not even need to choose. They are just present. The polyvalence of this situation gives individuals the feeling of freedom, yet there are also negative sides to it. 'Post-modernity' forms a certain stage of the development of individuals and social relations.
Źródło:
Studia Socjologiczne; 2011, 1(200); 435-458
0039-3371
Pojawia się w:
Studia Socjologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poczucie koherencji u osadzonych w Zakładzie Karnym wykazujących zachowania autoagresywne
A sense of coherence of prisoners exhibiting self-injurious behavior in the Penitentiary
Autorzy:
Porażyński, Krzysztof
Weber-Rajek, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/1032276.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Kazimierza Wielkiego w Bydgoszczy
Tematy:
autoagresja
poczucie koherencji
self-harm
sense of coherence
Opis:
Wstęp Autoagresja w więziennictwie jest problemem bardzo powszechnym. Mimo wielu badań dotyczących tego problemu, zjawisko to nie jest jeszcze w pełni poznane. Niektórzy autorzy doszukują się w grupie osób dokonujących samouszkodzeń zaburzeń osobowości. Poczucie koherencji jest podstawowym wymiarem osobowości, który ma istotny wpływ na radzenie sobie w sytuacjach nowych, trudnych i niepewnych. Cel badań Celem badań była ocena poczucia koherencji u osadzonych odbywających karę pozbawienie wolności po raz pierwszy w zakładzie karnym typu zamkniętego, wykazujących zachowania autoagresywne oraz porównanie wyników z grupą osadzonych odbywających karę pozbawienie wolności po raz pierwszy w zakładzie karnym typu otwartego. Materiał i Metoda Badania przeprowadzono na grupie 70 mężczyzn (31 – 40 lat) odbywających karę pozbawienia wolności w Zakładzie Karnym w Potulicach. Narzędziem badawczym był kwestionariusz SOC 29 (Sense of Coherence Scale). Wyniki i wnioski W badanej grupie osadzonych odbywających karę pozbawienie wolności po raz pierwszy w zakładzie karnym typu zamkniętego, wykazujący zachowania autoagresywne wykazano przeciętne wyniki poczucia koherencji oraz przeciętne wyniki jej składowych (poczucie zrozumiałości zaradności, sensowności). Wyniki poczucia koherencji oraz jej składowych były niższe u osadzonych odbywających karę pozbawienie wolności po raz pierwszy w zakładzie karnym typu zamkniętego, wykazujących zachowania autoagresywne w porównaniu z wynikami poczucia koherencji osadzonych odbywających karę pozbawienia wolności po raz pierwszy w zakładzie typu otwartego.
Introduction Autoimmunity in prison is a very common problem. Although there were carried out many studies on this issue, the phenomenon has not been fully understood yet. Some authors seek for personality disorders in a group of people engaged in self-harm. Sense of coherence is a fundamental dimension of personality that has a significant impact on managing new, challenging and uncertain situations. Aim of the study The aim of the study was to evaluate the sense of coherence of prisoners sentenced to imprisonment for the first time in a closed prison type , exhibiting self-injurious behaviour, and to compare the results with a group of inmates sentenced to imprisonment for the first time in an open prison. Material and Method The study was conducted in a group of 70 men (31 - 40 years) undergoing imprisonment in the Penitentiary in Potulice. The research tool was a questionnaire SOC 29 (Sense of Coherence Scale). Results and conclusions In a group of inmates sentenced to imprisonment for the first time in an closed prison, exhibiting self-injurious behaviour, the average performance of SOC and average results of its components (the sense of resourcefulness intelligibility , meaningfulness) were demonstrated . Results of SOC and its components were lower in prisoners sentenced to imprisonment for the first time in a closed prison, exhibiting self-injurious behaviour in comparison with the results of SOC inmates serving a sentence of imprisonment for the first time in an open prison.
Źródło:
Journal of Health Sciences; 2014, 4, 6; 139-146
1429-9623
Pojawia się w:
Journal of Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Epistemo-Semantic Coherentism: An Attitudinal View of Meaning Based on Epistemic Pragmatism
Autorzy:
Taşdelen, İskender
Powiązania:
https://bibliotekanauki.pl/articles/973306.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Semiotyczne
Tematy:
coherence
justification
meaning
belief
strategic and definitory rules
Opis:
This article develops a conception of linguistic meaning that treats it as an attitude on the part of language users towards pairs of expressions. As with propositional attitudes, these meaning attitudes are subject to being deliberately altered over time by language users, with the aim of maximizing the efficiency of their language use. Therefore, meaning attitudes can be justified or refuted in practical terms. Our instrumentalist-coherentist approach, which allows for meanings to be advocated for alongside beliefs, provides a viable theory of justification of that kind. This view fits better with the evolutionary nature of linguistic phenomena, and resolves the problem of substitutability in opaque contexts.
Źródło:
Studia Semiotyczne; 2019, 33, 1
0137-6608
Pojawia się w:
Studia Semiotyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Note on Compatible Prior Distributions in Univariate Finite Mixture and Markov-Switching Models
Autorzy:
Kwiatkowski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/2076512.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Bayesian inference
prior coherence
prior compatibility
exponential family
Opis:
Finite mixture and Markov-switching models generalize and, therefore, nest specifications featuring only one component. While specifying priors in the general (mixture) model and its special (single-component) case, it may be desirable to ensure that the prior assumptions introduced into both structures are compatible in the sense that the prior distribution in the nested model amounts to the conditional prior in the mixture model under relevant parametric restriction. The study provides the rudiments of setting compatible priors in Bayesian univariate finite mixture and Markov-switching models. Once some primary results are delivered, we derive specific conditions for compatibility in the case of three types of continuous priors commonly engaged in Bayesian modeling: the normal, inverse gamma, and gamma distributions. Further, we study the consequences of introducing additional constraints into the mixture model’s prior on the conditions. Finally, the methodology is illustrated through a discussion of setting compatible priors for Markov-switching AR(2) models.
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2015, 4; 219-247
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Nonvisual Legibility and the Coherence of Space: A New Theoretical Framework with Examples of Its Implementation in Empirical Research
Autorzy:
Bogucka, Zuzanna
Powiązania:
https://bibliotekanauki.pl/articles/2191668.pdf
Data publikacji:
2021-12-30
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
legibility
coherence
nonvisual perception
experiment
user-centered design
Opis:
The legibility and coherence of space are informative qualities as they facilitate the understanding and exploration of the environment. They also function as categories in architectural and urban design theory, as well as environmental psychology. The approaches of those disciplines, including their contemporary continuations, evolved from Lynch (1960) and are based solely on the visual qualities of the environment.In this article, I argue that relying only on the visual scope of human-environment relations is insufficient for inferring the user’s perception of the environment as legible and coherent and evaluating design solutions from the users’ perspectives. The proposed revised theoretical framework combines architecture and urbandesign perspectives with environmental psychology and broadens concepts of legibility and coherence. The revised framework combines the visual scope of the legibility and coherence with other aspects of human-environment relations by referring them to multisensory perspective, social and spatial functioning, levelsand characters of stimulation, and affective appraisal of the environment. To show how we can address this broadened approach to legibility and coherence in empirical research, I present two examples of experimental research using bimodal research materials. They present how nonvisual qualities contribute to legibility and coherence and how they can be measured (tested) during the data-driven evidence-based design process. The first experiment investigates the relationship between the qualities of soundscapes and the social functioning of users. The second covers the tactile and haptic dimensions and their connections with blind and visually impaired users’ spatial functioning.
Źródło:
Loci Communes. International Journal of Studies on Spaces in Arts and Humanities, Anthropology and Architecture; 2021, 1, 1; 1-39
2720-6122
Pojawia się w:
Loci Communes. International Journal of Studies on Spaces in Arts and Humanities, Anthropology and Architecture
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-destructive inspection of anti-corrosion protective coatings using optical coherent tomography
Autorzy:
Antoniuk, P.
Strąkowski, M. R.
Pluciński, J.
Kosmowski, B. B.
Powiązania:
https://bibliotekanauki.pl/articles/220649.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
optical coherence tomography
corrosion
anti-corrosion coatings inspection
Opis:
Optical Coherence Tomography (OCT) is one of the most rapidly advancing techniques. This method is capable of non-contact and non-destructive investigation of the inner structure of a broad range of materials. Compared with other methods which belong to the NDE/NDT group (Non-Destructive Evaluation/Non-Destructive Testing methods), OCT is capable of a broad range of scattering material structure visualization. Such a non-invasive and versatile method is very demanded by the industry. The authors applied the OCT method to examine the corrosion process in metal samples coated by polymer films. The main aim of the research was the evaluation of the anti-corrosion protective coatings using the OCT method. The tested samples were exposed to a harsh environment. The OCT measurements have been taken at different stages of the samples degradation. The research and tests results have been presented, as well as a brief discussion has been carried out.
Źródło:
Metrology and Measurement Systems; 2012, 19, 2; 365-372
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optical sizing of cement particles
Autorzy:
Gorsky, M. P.
Maksimyak, P. P.
Powiązania:
https://bibliotekanauki.pl/articles/174679.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
transverse coherence
polarization interferometer
cement
size distribution function
Opis:
We represent the optical correlation technique of cement particle sizing based on the transverse coherency function measurement using a polarization transverse shearing interferometer. It is shown that a set of particles with random shapes and orientations produces a coherence function, which is the same as a function of the set of spherical particles. The proposed technique of experimental data processing decreases the dependence of the result on interferometer noise, emission source intensity fluctuations and differences in the refraction index of isolated cement particles. The described technique allows fast and high reliable determining of the size distribution function parameters for a set of cement particles.
Źródło:
Optica Applicata; 2017, 47, 4; 511-519
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extended residual coherence with a financial application
Autorzy:
Zhang, Xuze
Kedem, Benjamin
Powiązania:
https://bibliotekanauki.pl/articles/1054574.pdf
Data publikacji:
2021-06-04
Wydawca:
Główny Urząd Statystyczny
Tematy:
interaction
residual coherence
nonlinear
time series
volatility index
Opis:
Residual coherence is a graphical tool for selecting potential second-order interaction terms as functions of a single time series and its lags. This paper extends the notion of residual coherence to account for interaction terms of multiple time series. Moreover, an alternative criterion, integrated spectrum, is proposed to facilitate this graphical selection. A financial market application shows that new insights can be gained regarding implied market volatility.
Źródło:
Statistics in Transition new series; 2021, 22, 2; 1-14
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strategic Coherence and Company Ambidexterity - a Necessity or a Delusion?
Autorzy:
Mielcarek, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/24200491.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
strategic coherence
business model
strategy
ambidexterity
exploration
exploitation
Opis:
Organisations have to take into account rapid, non-linear changes in their environment that build pressure on the company‘s development strategy. Therefore, one of the key challenges and paradoxes is to how maintain mutual coherence between different areas of the organisation and simultaneously leverage being ambidextrous so as to continue with exploration and exploitation activities. The main goal of this paper is to present research results on the relation between strategic coherence and company ambidexterity. Strategic coherence is a proprietary concept allowing for measurement of the balance between the vertical and horizontal adjustment of an organisation. Vertical adjustment is the relation between strategy and the elements of the business model measured by: 1) the cascading of goals, 2) feedback on matching elements of the business model according to strategy, and 3) control over financial results and strategy implementation. Horizontal adjustment refers to matching the business model components measured by: 1) creating value, 2) capturing value, and 3) creating a synergy effect) Meanwhile, ambidexterity is determined by four areas: 1) company goals, 2) products, 3) market and 4) competitive advantage for both exploration and exploitation activities. The research survey was conducted with the use of the CATI method. Altogether, 400 medium-sized and large Polish companies were included in the study. To calculate the dependencies, the Pearson correlation coefficient was applied. The companies studied achieved similar results in terms of strategic coherence dimensions, as the vertical adjustment was 6.47, and the horizontal was 6.29 on a scale of 1–10. Meanwhile, in terms of ambidexterity, the companies achieved a moderate level, with the average value for exploration being 4.26, and that for exploitation 4.51 on a scale from 1 to 7. Based on correlation analysis, the relation between both variables has the shape of an inverted “U” with the most favourable point for ambidexterity at the “high strategic coherence” level. This study is a comprehensive guide for practitioners, and presents development guidelines for companies. The value of this research is an empirically validated framework that describes relations based on a dynamic balance between strategic coherence and two types of adjustment in the area of regulation – vertical and horizontal, as well as ambidexterity with two types of activity in the area of operations: exploration and exploitation. This study is unique and explores uncharted areas of strategic management.
Źródło:
Management and Production Engineering Review; 2023, 14, 2; 61--69
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correlation between air temperature and electricitydemand by linear regression and wavelet coherence approach: UK, Slovakia and Bosnia and Herzegovina case study
Autorzy:
Avdakovic, S
Ademovic, A.
Nuhanovic, A.
Powiązania:
https://bibliotekanauki.pl/articles/141710.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
power system
electricity demand
air temperature
linear regression
wavelet coherence
Opis:
In this paper, the results of correlations between air temperature and electricity demand by linear regression and Wavelet Coherence (WTC) approach for three different European countries are presented. The results show a very close relationship between air temperature and electricity demand for the selected power systems, however, the WTC approach presents interesting dynamics of correlations between air temperature and electricity demand at different time-frequency space and provide useful information for a more complete understanding of the related consumption.
Źródło:
Archives of Electrical Engineering; 2013, 62, 4; 521-532
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reciprocity relations for light wave scattered by a particulate collection
Autorzy:
Jiang, Z.
Zhu, Z.
Wang, T.
Powiązania:
https://bibliotekanauki.pl/articles/175104.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
light scattering
particulate collection
spectral density
spectral degree of coherence
Opis:
Two Fourier relations of light waves scattered by a random-distributed particulate medium have been investigated. We find that the scattered field and the particulate collection satisfy two Fourier relations, i.e. the spectral density is directly proportional to a Fourier transform of a convolution of correlation coefficient of each particle and correlation coefficient of distribution function of the whole collection, and the spectral degree of coherence is directly proportional to a Fourier transform of a convolution of strength of the scattering potential of each particle and strength of the distribution function of the whole collection. To illustrate these relations, behaviors of the far-field generated by Gaussian-correlated particles with Gaussian-correlated distributions have been discussed.
Źródło:
Optica Applicata; 2018, 48, 4; 661-670
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sense of Coherence among University Students: Research Report
Autorzy:
Perkowska, Marta Mirosława
Powiązania:
https://bibliotekanauki.pl/articles/1931866.pdf
Data publikacji:
2021-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
health education
sense of coherence
university students
social pedagogy
health.
Opis:
This article presents selected factors conditioning the sense of coherence among university students. Results were obtained after analysis of statistical data collected in a group of 467 students. Antonovsky’s Sense of Coherence Questionnaire (SOC-29) was used in the research. The results obtained showed a predominance of a moderate level of the sense of coherence in the group of studied students. The study confirmed the existence of a dependency between the sense of coherence and the sex, year of study, and civil status of the studied persons. The other two variables, i.e., course of studies and declared level of religiosity, only showed certain tendencies. The results presented in this paper confirmed the need to shape coherence through education and socialization as a socially significant personal predisposition. The sense of coherence facilitates both self-reflection and self-development in the individual. Conclusions formulated on the basis of the obtained results point to the necessity of taking up a contemporary pedagogical challenge, which is health education. An additional recommendation is to enrich educational programs with activities the goal of which is to create a high sense of coherence in their recipients, which, by definition, should have pro-health consequences for a wide group of beneficiaries.
Źródło:
Kultura i Edukacja; 2021, 2(132); 157-171
1230-266X
Pojawia się w:
Kultura i Edukacja
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pilot Design for Sparse Channel Estimation in Orthogonal Frequency Division Multiplexing Systems
Autorzy:
Vimala, P.
Yamuna, G.
Powiązania:
https://bibliotekanauki.pl/articles/309257.pdf
Data publikacji:
2018
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
channel estimation
compressive sensing
minimum coherence
minimum variance
pilot pattern
Opis:
Orthogonal Frequency Division Multiplexing (OFDM) is a well-known technique used in modern wide band wireless communication systems. Coherent OFDM systems achieve its advantages over a multipath fading channel, if channel impulse response is estimated precisely at the receiver. Pilot-aided channel estimation in wide band OFDM systems adopts the recently explored compressive sensing technique to decrease the transmission overhead of pilot subcarriers, since it exploits the inherent sparsity of the wireless fading channel. The accuracy of compressive sensing techniques in sparse channel estimation is based on the location of pilots among OFDM subcarriers. A sufficient condition for the optimal pilot selection from Sylow subgroups is derived. A Sylow subgroup does not exist for most practical OFDM systems. Therefore, a deterministic pilot search algorithm is described to select pilot locations based on minimizing coherence, along with minimum variance. Simulation results reveal the effectiveness of the proposed algorithm in terms of bit error rate, compared to the existing solutions.
Źródło:
Journal of Telecommunications and Information Technology; 2018, 2; 60-68
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problems of monotonicity of some popular risk measures
Problemy monotoniczności pewnych popularnych miar ryzyka
Autorzy:
Khemissi, Eliza
Powiązania:
https://bibliotekanauki.pl/articles/425285.pdf
Data publikacji:
2016
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
measures of risk
Expected Shortfall
Expected Value
Maximum Loss
coherence
Opis:
In the article the author checked the properties of coherent measures of risk for Expected Value, Expected Shortfall, Maximum Loss (for losses weighted with probability), Median, Median Absolute Deviation, “Arithmetic Mean of Absolute Deviations from Median”, Quantiles, Cumulative Distribution Function and Mid-Range in connection with the last financial crisis. Methodology of the research – mathematical proving and theoretical analysis. Results. The survey shows that the above functions are not coherent measures of risk with some definition of stochastic order and in many cases not measures of risk in terms of the axiomatic definition. The paper shows also that the lemma used in the literature to prove monotonicity of Expected Shortfall is not truth and we will prove the lemma with the opposite relation. Value of the paper – Mathematical proofs in the field of risk measurement. Showing some problems with monotonicity of risk measures. Contradicting the lemma of monotonicity of Expected Shortfall. Own definition of first degree stochastic order.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2016, 2 (52); 108-122
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł

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