Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "Variables" wg kryterium: Temat


Tytuł:
“Every knock is a boost”. Cyber risk behaviour among Poles
Autorzy:
Cichowicz, Ewa
Iwanicz-Drozdowska, Małgorzata
Kurowski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/1891366.pdf
Data publikacji:
2021-12-17
Wydawca:
Uniwersytet Ekonomiczny w Poznaniu
Tematy:
cybersecurity behaviour
knowledge of cybersecurity
instrumental variables
financial services
Opis:
The purpose of this study is to evaluate the safety of individuals’ behaviour in the cyber world, especially when using financial services. The article focuses on knowledge of cybersecurity issues, cyber risk awareness and respondents’ self-assessment as potential determinants of individual behaviour. The data obtained from a survey of a representative group of Polish citizens during the second wave of the COVID-19 pandemic was analysed. Ordinal logistic regression and instrumental variable analysis confirm the existence of a positive relationship between knowledge and awareness of cyber risk and safe behaviour in the cyber world. Older generations exhibit safer behaviour which may be linked to their life experience; however, the results do not confirm that experiencing a loss due to cyber risk convinces individuals to use Internet-based solutions in a safer manner. Therefore, educational campaigns should be expanded to include cyber risk issues and tailored to the needs of various users.
Źródło:
Economics and Business Review; 2021, 7, 4; 94-120
2392-1641
Pojawia się w:
Economics and Business Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
„Luckily, a neighbour’s cow is dead”. Mutual disutility from bilateral conservation prospects for the transboundary protected area in the case of the Białowieża forest
„Lepiej, żeby sąsiadowi zdechła krowa, niż żebyśmy my mieli drugą”. Niechęć uczestniczenia w hipotetycznych polsko-białoruskich projektach wzmocnienia ochrony przyrody w puszczy białowieskiej
Autorzy:
Valasiuk, S.
Czajkowski, M.
Giergiczny, M.
Żylicz, T.
Veisten, K.
Mata, I. L.
Halse, A. H.
Elbakidze, M.
Angelstam, P.
Powiązania:
https://bibliotekanauki.pl/articles/95570.pdf
Data publikacji:
2016
Wydawca:
Fundacja Ekonomistów Środowiska i Zasobów Naturalnych
Tematy:
transnarodowe obszary ochrony przyrody
ochrona bierna
eksperymenty z wyborem
gotowość do zapłacenia
model zmiennych ukrytych
transnational areas of nature conservation
passive protection
experiments with a choice
willingness to pay
model hidden variables
Opis:
Transnarodowe obszary ochrony przyrody, których ważnym przykładem jest Puszcza Białowieska, stanowią znaczną część wszystkich aktualnych form obszarowej ochrony bioróżnorodności. Według naszego rozeznania nie było dotąd prac empirycznych dotyczących związanej z tym problematyki międzynarodowych dóbr publicznych. Staramy się wypełnić tę lukę, badając społeczne preferencje – zarówno w Polsce, jak i na Białorusi – odnośnie ochrony krajowych i zagranicznych fragmentów ekologicznego systemu puszczańskiego przedzielonego granicą państwową. Wyniki naszych eksperymentów z wyborem wskazują, że skala obecnej współpracy jest efektywna ekonomicznie, oraz pożądana społecznie. W artykule badamy zjawisko wzajemnej niechęci finansowania rozszerzenia obszarów ochrony biernej w Puszczy Białowieskiej. Tylko wśród polskich respondentów udało się zidentyfikować nieliczne osoby, które gotowe byłyby partycypować finansowo w hipotetycznym projekcie zlokalizowanym w kraju sąsiada. Ponadto, by polscy respondenci są przeciętnie gotowi podjąć się bardziej skutecznej ochrony (przynajmniej w kraju). Natomiast respondenci białoruscy wydają się być zazwyczaj usatysfakcjonowani dotychczasowymi rozwiązaniami.
Źródło:
Ekonomia i Środowisko; 2016, 3; 186-198
0867-8898
Pojawia się w:
Ekonomia i Środowisko
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Bayesian Analysis of Exogeneity in Models with Latent Variables
Autorzy:
Pajor, Anna
Powiązania:
https://bibliotekanauki.pl/articles/483331.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
exogeneity
Bayesian cuts
latent variables
non-causality
stochastic volatility
Opis:
This paper presents some new results on exogeneity in models with latent variables. The concept of exogeneity is extended to the class of models with latent variables, in which a subset of parameters and latent variables is of interest. Exogeneity is discussed from the Bayesian point of view. We propose sufficient weak and strong exogeneity conditions in the vector error correction model (VECM) with stochastic volatility (SV) disturbances. Finally, an empirical illustration based on the VECM-SV model for the daily growth rates of two main official Polish exchange rates: USD/PLN and EUR/PLN, as well as EUR/USD from the international Forex market is presented. The exogeneity of the EUR/USD rate is examined. The strong exogeneity hypothesis of the EUR/USD rate is not rejected by the data.
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2011, 3, 2; 49-73
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A C++ shared-memory IPC framework for High-Throughput Data Acquisition systems
Autorzy:
Ingles, R.
Orlikowski, M.
Napieralski, A.
Powiązania:
https://bibliotekanauki.pl/articles/397736.pdf
Data publikacji:
2017
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
inter-process communication
ring buffer
data acquisition system
high-throughput
condition variables
futex
atomic variables
komunikacja międzyprocesowa
bufor pierścieniowy
system akwizycji danych
wysoka wydajność
zmienne warunku
zmienne atomowe
Opis:
High-Throughput Data Acquisition Systems are an essential part in many scientific experiments, and the processing of the large amount of data, represents a challenge in designing systems capable of managing such volume of data. Owing to the nature of this type of experiments, the processes responsible for gathering the data from devices that measure real-world phenomena, and those processes in charge of distributing the data to monitoring and/or controlling systems, shall communicate with accuracy and reliability. By running those processes concurrently in a multi-processor computer system, such requirements of accuracy and reliability can be achieved. In this paper, we present the design of a C++ framework, which implements a ring-buffer by using shared-memory as a fast mechanism of data communication among processes. Likewise, the framework controls the access to data in the shared ring-buffer by implementing inter-process synchronization objects in shared-memory. The effectiveness of the proposed solution has been evaluated by evaluating the latency time from when a new data is written into the shared ring-buffer and the longest instant when such a data is gathered. After the experimental test, the results show that it is possible to develop a C++ framework for helping programmers to create data acquisition system when a high-throughput data-stream is involved, getting suitable performance by using shared-memory.
Źródło:
International Journal of Microelectronics and Computer Science; 2017, 8, 2; 43-49
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A General Class of Mean Estimators Using Mixture of Auxiliary Variables for Two-Phase Sampling in the Presence of Non-Response
Autorzy:
Ahmad, Zahoor
Zubair, Rahma
Shahid, Ummara
Powiązania:
https://bibliotekanauki.pl/articles/465687.pdf
Data publikacji:
2014
Wydawca:
Główny Urząd Statystyczny
Tematy:
non-response
multi-auxiliary variables
regression-cum-ratioexponential
estimators
no information case
Opis:
In this paper we have proposed a general class of estimators for two-phase sampling to estimate the population mean in the case when non-responses occur at the first phase. Furthermore, several continuous and categorical auxiliary variable(s) have been simultaneously used while constructing the class. Also, it is assumed that the information on all auxiliary variables is not available for population, which is often the case. The expressions of the mean square error of the suggested class have been derived and several special cases of the proposed class have been identified. The empirical study has also been conducted.
Źródło:
Statistics in Transition new series; 2014, 15, 4; 501-524
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A General Family of Dual to Ratio-Cum-Product Estimator in Sample Surveys
Autorzy:
Singh, Rajesh
Kumar, Mukesh
Chauhan, Pankaj
Sawan, Nirmala
Smarandache, Florentin
Powiązania:
https://bibliotekanauki.pl/articles/465772.pdf
Data publikacji:
2011
Wydawca:
Główny Urząd Statystyczny
Tematy:
Family of estimators
auxiliary variables
bias
mean-squared error
Opis:
This paper presents a family of dual to ratio-cum-product estimators for the finite population mean. Under simple random sampling without replacement (SRSWOR) scheme, expressions of the bias and mean-squared error (MSE) up to the first order of approximation are derived. We show that the proposed family is more efficient than usual unbiased estimator, ratio estimator, product estimator, Singh estimator (1967), Srivenkataramana (1980) and Bandyopadhyaya estimator (1980) and Singh et al. (2005) estimator. An empirical study is carried out to illustrate the performance of the constructed estimator over others.
Źródło:
Statistics in Transition new series; 2011, 12, 3; 587-594
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method for determining the decision variables of hazardous zone identification system for ship power plant operator
Autorzy:
Kamiński, P.
Podsiadło, A.
Tarełko, W.
Powiązania:
https://bibliotekanauki.pl/articles/259648.pdf
Data publikacji:
2006
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
siłownie okrętowe
bezpieczeństwo
operator
czynniki niebezpieczne i szkodliwe
strefa niebezpieczna
procedury realizacji zadań
zmienność decyzji
strefa wiatrów zmiennych
ship power plant
safety
hazardous and noxious factors
hazardous zone
task realization procedures
decision variables
Opis:
In this paper a method is presented of determining - on the basis of information available in the preliminary phase of ship power plant design - the set of hazardous and noxious factors for the operator, as well as of converting them into the set of input variables to a hazardous zone identification system. Basing on the choice of values of determined decision variables, the system's user is able to determine potential hazardous zones for the ship power plant operator. Conversions of the determined factors into the set of the system's input variables were performed by using the knowledge achieved from the side of experts in ship power plant designing and operating.
Źródło:
Polish Maritime Research; 2006, 3; 17-25
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new method of determining the parameters of thermonuclear plasma on the basis of multichannel polarimetric measurements
Autorzy:
Chrzanowski, J.
Kravtsov, Y.A.
Powiązania:
https://bibliotekanauki.pl/articles/148759.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
angular variables
gradient method
plasma diagnostics
plasma polarimetry
polarimetric data inversion
Opis:
A gradient method has been proposed as an effective procedure to reconstruct real parameters of tokamak plasma by means of multichannel polarimetric measurements. High efficiency of the suggested procedure is illustrated by numerical calculations performed for a given plasma model taking into account the poloidal component of magnetic field. Polarization state of electromagnetic wave traditionally is characterized by azimuthal – ψ and ellipticity – χ angles. Evolution of these parameters along the ray is described by the equations of angular variables technique (AVT) introduced in previous works of the present authors. Numerical simulations have approved that the gradient procedure provides acceptable accuracy of inversion already after several iterations.
Źródło:
Nukleonika; 2013, 58, 2; 281-285
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A note on correlation coefficient between random events
Autorzy:
Stępniak, Czesław
Powiązania:
https://bibliotekanauki.pl/articles/729754.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
correlation coefficient between random events
correlation coefficient for random variables
synergy phenomenon
Opis:
Correlation coefficient is a well known measure of (linear) dependence between random variables. In his textbook published in 1980 L.T. Kubik introduced an analogue of such measure for random events A and B and studied its basic properties. We reveal that this measure reduces to the usual correlation coefficient between the indicator functions of A and B. In consequence the resuts by Kubik are obtained and strenghted directly. This is essential because the textbook is recommended by many universities in Poland.
Źródło:
Discussiones Mathematicae Probability and Statistics; 2015, 35, 1-2; 57-60
1509-9423
Pojawia się w:
Discussiones Mathematicae Probability and Statistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A note on discrete descriptions of water flows in material variables
Autorzy:
Szmidt, K.
Powiązania:
https://bibliotekanauki.pl/articles/241055.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
potential motion
vortex flow
material variables
discrete integration
Opis:
The paper describes the problem of discrete formulation of plane fluid flows in material description. The investigation is confined to chosen cases of stationary potential and vortex motion of an incompressible inviscid fluid within circular domains with perfect boundaries. The paths of fluid particles are obtained by numerical integration of momentum equations within a discrete time space. Brownian type random disturbances are attached to the displacement field obtained by the integration. It has been shown, that the discrete formulation may lead to solutions in which a small distance between two material points may grow to a relatively large value after a finite elapse of time. The last feature of the procedure may be a serious drawback of the discrete formulation in the material variables.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2005, 52, 2; 163-175
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A smart and distributed measurement system to acquire and analyze mechanical motion parameters
Autorzy:
Pereira Dias, J. M.
Viegas, V.
Postolache, O.
Silva Girão, P.
Powiązania:
https://bibliotekanauki.pl/articles/221645.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
measurement system
kinematic variables measurements
accelerometers
error compensation
accuracy
Opis:
This paper presents a low-cost and smart measurement system to acquire and analyze mechanical motion parameters. The measurement system integrates several measuring nodes that include one or more triaxial accelerometers, a temperature sensor, a data acquisition unit and a wireless communication unit. Particular attention was dedicated to measurement system accuracy and compensation of measurement errors caused by power supply voltage variations, by temperature variations and by accelerometers’ misalignments. Mathematical relationships for error compensation were derived and software routines for measurement system configuration, data acquisition, data processing, and self-testing purposes were developed. The paper includes several simulation and experimental results obtained from an assembled prototype based on a crank-piston mechanism.
Źródło:
Metrology and Measurement Systems; 2013, 20, 3; 465-478
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study of changes in the development level of water and sewerage infrastructure and environmental protection in the counties of the Silesian Voivodship – a dynamic interpretation
Autorzy:
Czopek, Anna
Powiązania:
https://bibliotekanauki.pl/articles/584961.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
classification methods
cluster analysis
agglomeration methods
diagnostic variables
synthetic variables
stimulants
destimulants
Opis:
In this paper the author presents an analysis of the development of the water and sewerage infrastructure and environmental protection in the counties of the Silesian voivodship on the basis of designated synthetic variables in the dynamic approach. Selected years before and after joining the European Union are considered and some interpretative hypotheses are verified by empirical research. To achieve this purpose, the problem of the selection of diagnostic variables and the descriptive characteristics to be used, as well as the determination of the of the synthetic variables values based on selected aggregation formulas, also in dynamic terms, are discussed and suitable solutions are proposed.
Źródło:
Mathematical Economics; 2013, 9 (16); 5-20
1733-9707
Pojawia się w:
Mathematical Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study of engineering drawing as design language teaching
Rysunek techniczny jako język nauczania projektowania
Autorzy:
Lille, H.
Powiązania:
https://bibliotekanauki.pl/articles/119034.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Geometrii i Grafiki Inżynierskiej
Tematy:
engineering drawing
design language
geometric variable
graphic variables
semiotics tools
communication
grafika inżynierska
język projektowania
zmienne geometryczne
zmienne graficzne
narzędzia semiotyczne
komunikacja
Opis:
The drawing is the oldest language and the only universal language (here belongs also the co-called engineering or technology language - the design language). The tools of expression of engineering drawings are graphic representations. The drawing is written in form that represents the shape, size and specifications of the design object. The drawing is read so that the product can be manufactured exactly as it was originally conceived by the designer. The engineering drawing is based on descriptive geometry as the grammar of graphics, i.e. the logic of sight, and graphic variables as the words of graphics, i.e. semiotics tools – visual signs (e.g. geometric primitives, co lours). The signs are explained with the help of Bense’s triadic model of the sign. It assumes that each design object can be built from certain primitives according to geometric variables . The Engineering Drawing course begins with learning the design language which is based on graphic conventions and regularities.
Rysunek jest najstarszym i jedynym językiem uniwersalnym (dotyczy to także języka inżynierskiego i technicznego stanowiącego języka projektowania). Narzędziami wyrażenia rysunków technicznych są reprezentacje graficzne. Rysunek zapisywany jest w formie, która reprezentuje kształt, rozmiar i specyfikacje przedmiotu projektowania. Powinien być odczytywany tak, by dany produkt mógł być wytworzony zgodnie z pierwotnym opracowaniem przez projektanta. Podstawą teoretyczną rysunku technicznego jest geometria wykreślna, jako gramatyka grafiki, czyli logika widzenia i zmiennych (znaków) graficznych (prymitywów geometrycznych, kolorów, ). Znaki te mogą być opisane za pomoc ą tzw. triadycznego modelu Bense’a. Zakłada się, że każdy projektowany obiekt może być zbudowany z elementów pewnego zbioru pierwotnych zmiennych geometrycznych. Kurs rysunku technicznego rozpoczyna si ę od nauki języka projektowania opartego się na przyjętych konwencjach graficznych i regułach.
Źródło:
Journal Biuletyn of Polish Society for Geometry and Engineering Graphics; 2015, 27; 33-36
1644-9363
Pojawia się w:
Journal Biuletyn of Polish Society for Geometry and Engineering Graphics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study of The Cognitive Level and Some Basic Skills in Basketball Among Secondary Students According to Gender and Intelligence Variables
Autorzy:
Ahcene, Ahmed
Mokrani, Djamel
Houcine, Benzidane
Powiązania:
https://bibliotekanauki.pl/articles/1030745.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
cognitive level
intelligence variables
secondary students
some basic skills in basketball
Opis:
The curriculum of physical education and sports through sports activities programmed in the secondary stage seeks to achieve a set of goals of mobility, cognitive and socio-emotional to serve the goals of physical education and sports at this stage. We find a basketball game one of these activities which need a degree of intelligence and knowledge that helps in developing the skill level of the students and selecting the teacher for the appropriate exercises to teach different basic skills. In this context, our study aims to measure the cognitive level of the students of the third secondary level, as well as their level in some basic skills. The study was conducted using a cognitive test in basketball and the selection of some technical tests according to the objectives of the curriculum, then comparing the level according to the sex variables and the level of intelligence and interaction between them and identifying the relationship between these variables. One of the students of the third year secondary school in the city of Mostaganem (Algeria), and after the statistical treatment of the results was reached the results of the most important: 1. The absence of a gender effect and the level of logical and physical intelligence and interaction between them at the cognitive level while being influenced by the level of space intelligence in favor of those with high intelligence. 2. There is a difference in the level of skill of pointing, scrolling and dialogue for the benefit of males, and there is no impact on the level of intelligence, whether logical or physical or space. 3. There is an impact of the interaction between sex and the level of spatial intelligence at the cognitive level, where males and females with high intelligence showed more response. 4. The interaction of sex and the level of intelligence, whether logical, physical or spatial, has no impact on the skills of correction, scrolling and dialogue. 5. There is a direct correlation between IQ and cognitive level as well as basic skills in basketball.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2019, 27, 3; 5-16
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
About one class of the problems of optimal stochastic control of hybrid dynamical systems
Autorzy:
Tevyashev, A.
Matviyenko, O.
Powiązania:
https://bibliotekanauki.pl/articles/410934.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
optimal stochastic control
hybryd dynamical systems
probabilistic constraints on the chase variables
water main
Opis:
A new class of the problems of optimal stochastic control of hybrid dynamical systems different from well-known ones by the introduction of additional extreme and probabilistic constraints on the phase variables is studied in the present work. The mathematical formulation and approximate method of solution of the examined class of the problems are presented in this work. The effectiveness of the use of this class of the problems is illustrated on the example of one of the largest water main of Ukraine.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2016, 5, 4; 3-10
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies