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Tytuł:
Seksualność i jakość życia kobiet badanych do 18 miesięcy i 5 lat po zabiegu mastektomii – analiza porównawcza.
The sexuality and the quality of life of women examined to 18 months and 5 years after the surgery on the mastectomy – comparative analysis.
Autorzy:
Białek, Katarzyna
Bolek, Katarzyna
Kowalczyk, Robert
Lew-Starowicz, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/527906.pdf
Data publikacji:
2015
Wydawca:
Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
Tematy:
the breast cancer
the sexuality
the quality of life
mastectomy
Opis:
Aim. The aim of the study was to analyze the impact of the disease (breast cancer) and treatment on sexuality patients after mastectomy as part of the project „Sexuality women after mastectomy,” N N404 165640. Materials and methods. Examined were 120 women, firstly 18 months and then again 5 years after radical mastectomy. To investigate their sexual satisfaction and quality of life, self-prepared surveys and standardized questionnaires such as HADS, SQoL-F, QLQBR23 and QLQ-C30 were used. Results. On the basis of these studies it has been shown that breast cancer affects the sexuality and the quality of life of women both 18 months and five years after radical mastectomy. The sexuality of women 18 months after the surgery has been defined as less severe than that in the case of women five years after the surgery. Both groups of women agreed that the most important aspect to them is the emotional contact. A similar level of perceived anxiety and depression have been found among the respondents.
Źródło:
Państwo i Społeczeństwo; 2015, 4; 121-129
1643-8299
2451-0858
Pojawia się w:
Państwo i Społeczeństwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
COMPARING PROPORTIONS OF SENSITIVE ITEMS IN TWO POPULATIONS WHEN USING POISSON AND NEGATIVE BINOMIAL ITEM COUNT TECHNIQUES
Autorzy:
Kowalczyk, Barbara
Wieczorkowski, Robert
Powiązania:
https://bibliotekanauki.pl/articles/453738.pdf
Data publikacji:
2017
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
sensitive questions
Poisson and negative binomial item count techniques
latent data
two populations
asymptotic test
Opis:
Sensitive attributes are extremely difficult to be measured directly. Recently new indirect methods of questioning, called Poisson and negative binomial item count techniques, have been proposed by [Tian et al. 2014]. This paper focuses on important problem of comparing proportions of sensitive items in two populations when using new indirect method. Proper statistical theory is introduced, including tests for equality of two sensitive proportions followed by derivation of their asymptotic power functions. Simulation studies are conducted to illustrate the problem.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2017, 18, 1; 68-77
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New improved Poisson and negative binomial item count techniques for eliciting truthful answers to sensitive questions
Autorzy:
Kowalczyk, Barbara
Wieczorkowski, Robert
Powiązania:
https://bibliotekanauki.pl/articles/2034113.pdf
Data publikacji:
2022-03-15
Wydawca:
Główny Urząd Statystyczny
Tematy:
sensitive questions
indirect questioning methods
item count techniques
Poisson ICT
negative binomial ICT
EM algorithm
Opis:
Item count techniques (ICTs) are indirect survey questioning methods designed to deal with sensitive features. These techniques have gained the support of many applied researchers and undergone further theoretical development. Latterly in the literature, two new item count methods, called Poisson and negative binomial ICTs, have been proposed. However, if the population parameters of the control variable are not provided by the outside source, the methods are not very efficient. Efficiency is an important issue in indirect methods of questioning due to the fact that the protection of respondents’ privacy is usually achieved at the expense of the efficiency of the estimation. In the present paper we propose new improved Poisson and negative binomial ICTs, in which two control variables are used in both groups, although in a different manner. In the paper we analyse best linear unbiased and maximum likelihood estimators of the proportion of the sensitive attribute in the population in the introduced new models. The theoretical findings presented in the paper are supported by a comprehensive simulation study. The improved procedure allowed the increase of the efficiency of the estimation compared to the original Poisson and negative binomial ICTs.
Źródło:
Statistics in Transition new series; 2022, 23, 1; 75-88
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal state feedback controller for balancing cube
Autorzy:
Kowalczyk, Adam
Piotrowski, Robert
Powiązania:
https://bibliotekanauki.pl/articles/27314202.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
balancing cube
control systems
linear quadratic regulator
mathematical model
physical model
Opis:
In this paper, a nonlinear balancing cube system is considered, the concept for which is based on an inverted pendulum. The main purpose of this work was the modelling and construction of a balancing cube with the synthesis of the control system. The control objectives included swing-up and stabilization of the cube on its vertex at an unstable equilibrium. Execution of the intended purpose required, first, deriving a cognitive mathematical model. It was based on the Lagrange method. Next, a mathematical model for control purposes was derived. The project of the physical model of the balancing cube was presented. A stabilization system based on a linear quadratic regulator (LQR) was developed. Moreover, a swing-up mechanism was used to bring the cube close to the upper equilibrium point. The algorithm switching condition was important to enable the correct functioning of the system. The developed control system was verified in the Matlab environment. Finally, verifying experiments and comparisons among models (mathematical and physical) were performed.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2022, 16, 3; 3--12
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of factors affecting the intrinsic vulnerability of groundwater rated by the mean residence time estimation method
Autorzy:
Duda, Robert
Kowalczyk, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2058610.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
groundwater vulnerability
intrinsic vulnerability
residence time
travel time
MRT
GIS
Opis:
We analyse the factors used for assessing groundwater intrinsic vulnerability to pollution in the mean residence time estimation method, providing a final vulnerability evaluation. The following factors were analysed: depth to shallow groundwater, effective precipitation infiltration coefficient, terrain inclination, volumetric water content of soils and rocks in the unsaturated zone and volumetric water content of the topsoil. GIS surveys were performed for two geomorphologically diverse regions: a highland piedmont and a lowland plain in Poland (Central Europe). In both cases, groundwater had spatially diverse vulnerability to contamination. The research method used relied on determining the percentage participation of the area with particular values of the parameters analysed in areas of different degrees of vulnerability. Knowledge of the extent and distribution of variability of the parameters analysed in areas of particular degrees of vulnerability helps explain the causes of spatial variation in groundwater intrinsic vulnerability to contamination in given areas.
Źródło:
Geological Quarterly; 2019, 63, 1; 126--138
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sharing economy w przestrzeni polskich metropolii i miast turystycznych na przykładzie Airbnb
Autorzy:
Kowalczyk-Anioł, Joanna
Pawlusiński, Robert
Powiązania:
https://bibliotekanauki.pl/articles/1024230.pdf
Data publikacji:
2018-12-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
ekonomia współdzielenia
Airbnb
gospodarka turystyczna
studia miejskie
najem krótkoterminowy
sharing economy
tourism economy
urban studies
short-term rental
Opis:
Ekonomia współdzielenia (ang. sharing economy) stała się nieodłącznym elementem współczesnej gospodarki turystycznej. Jako alternatywny sposób oferowania dóbr i usług, poza tradycyjnym rynkiem, wywarła istotne zmiany zarówno w sferze funkcjonalnej, jak i przestrzennej turystyki. W artykule podjęto próbę przedstawienia – na przykładzie działalności amerykańskiego serwisu Airbnb – istoty zjawiska sharing economy w turystyce w przestrzeni polskich metropolii i miast turystycznych. Analizie poddano rozmiary tego zjawiska w Polsce, dynamikę jego rozwoju, specyfikę oferty dla turystów, a także kwestie przestrzennego zróżnicowania stopnia jego rozwoju. W badaniach wykorzystano dane źródłowe pozyskane z portalu AirDNA (stan na listopad 2017 r.).
The sharing economy has become an inseparable element of the contemporary tourism economy. As an alternative way of offering goods and services, it has significantly changed the global tourism market. The paper attempts to present – on the example of the Airbnb – the phenomenon of sharing economy in tourism in Polish cities. The scale of Airbnb rentals in Poland, the dynamics of its development, the characteristic of the offers, as well as the issues of spatial diversification were analyzed. The study is based on data obtained from the AirDNA portal (as of November 2017).
Źródło:
Konwersatorium Wiedzy o Mieście; 2018, 31, 3; 15-22
2543-9421
2544-1221
Pojawia się w:
Konwersatorium Wiedzy o Mieście
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jastrząb w akcji
Autorzy:
Sitek, Robert.
Powiązania:
Przegląd Pożarniczy 2021, nr 10, s. 42-43
Współwytwórcy:
Kowalczyk, Artur. Wywiad
Data publikacji:
2021
Tematy:
Komenda Główna Policji
Ratownictwo
Pożar
Las
Pomoc zagraniczna
Policjanci
Piloci
Lotnictwo policyjne
Sikorsky S-70i Black Hawk International (śmigłowiec)
Gaszenie (pożarnictwo)
Artykuł z czasopisma fachowego
Wywiad dziennikarski
Opis:
Wywiad z insp. pil. Robertem Sitkiem, naczelnikiem Zarządu Policji Głównego Sztabu Policji Komendy Głównej Policji, uczestniczącym w zagranicznej misji gaszenia pożarów w Turcji. Policyjni lotnicy prowadzili działania ze śmigłowca S-70i Black Hawk, wykorzystując strażacki zbiornik na wodę („bambi bucket”) o pojemności 3 tys. litrów.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Miasto turystyczne wobec pandemii COVID-19. Pierwsze doświadczenia w świetle literatury przedmiotu
Tourism City and the COVID-19 Pandemic: First Experiences in the Light of the Literature Review
Autorzy:
Kowalczyk-Anioł, Joanna
Pawlusiński, Robert
Powiązania:
https://bibliotekanauki.pl/articles/2078993.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
tourism city
pandemic
local tourism economy
tourism sector
COVID-19
miasto turystyczne
pandemia
lokalna gospodarka turystyczna
sektor turystyczny
Opis:
Celem artykułu jest prezentacja dotychczasowych doświadczeń miast turystycznych w zakresie ograniczania negatywnego wpływu pandemii COVID-19 na lokalną gospodarkę turystyczną. Opracowanie ma charakter przeglądowy. Za punkt wyjścia przyjęto raport World Tourism Cities Federation na temat turystyki w miastach w czasie COVID-19. Autorzy omawiają i dyskutują zaproponowane w nim instrumentarium działań i narzędzi wspierających na poziomie miejskim sektor turystyczny, zarówno w fazie pierwszych odpowiedzi na wybuch pandemii, jak i w następnym etapie, zmierzającym do odbudowy i ożywienia turystyki w mieście.
The aim of this paper is to present previous experiences of tourism cities in reducing the negative impact of COVID-19 pandemic on the local tourism economy. The article is based on literature review, which starting point was a World Tourism Cities Federation report on urban tourism during COVID-19 pandemic. The authors argue and discuss the proposed instruments of actions and tools supporting the tourism sector at the urban level, both in the phase of first responses to the outbreak, and in next stage of the pandemic, which is aimed at rebuilding and revitalizing tourism in the city.
Źródło:
Annales Universitatis Mariae Curie-Sklodowska, sectio B – Geographia, Geologia, Mineralogia et Petrographia; 2021, 76; 203-222
0137-1983
Pojawia się w:
Annales Universitatis Mariae Curie-Sklodowska, sectio B – Geographia, Geologia, Mineralogia et Petrographia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic models to study adult neurogenesis.
Autorzy:
Filipkowski, Robert
Kiryk, Anna
Kowalczyk, Anna
Kaczmarek, Leszek
Powiązania:
https://bibliotekanauki.pl/articles/1041415.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
olfactory bulb
brain
dentate gyrus
hippocampus
BrdU.
knock-out mice
Opis:
In the central nervous system (CNS) generation of new neurons continues throughout adulthood, when it is limited to the olfactory bulb and hippocampus. The knowledge regarding the function of newly-generated neurons remains limited and is vigorously investigated using diverse approaches. Among these are genetically modified mice, most of them of knock-out type (KO). Results from 23 diverse KO mouse models demonstrate the importance of particular proteins (growth factors, nitric oxide synthases, receptors, cyclins/cyclin-associated proteins, transcription factors, etc.) in adult neurogenesis (ANGE) as well as separate it from developmental neurogenesis. These results bring us closer to revealing the function of newly generated neurons in adult brains.
Źródło:
Acta Biochimica Polonica; 2005, 52, 2; 359-372
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modular Test Stand for Fatigue Testing of Aeronautical Structures - Verification of Assumptions
Autorzy:
Leski, Andrzej
Wronicz, Wojciech
Kowalczyk, Piotr
Szmidt, Michał
Klewicki, Robert
Włodarczyk, Karol
Uliński, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/2105142.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
fatigue
test
airframe
veryfication
strain gauge
DIC
Opis:
The Modular Test Stand was developed and manufactured to decrease the cost of fatigue testing and reduce the time of its completion as well as to enable testing specimens under more complex load conditions. The stand consists of three connected sections, similar to a wing box, all being loaded in the same way. Thanks to that, several specimens can be tested simultaneously. This configuration requires that stress and strain distribution should be reasonably uniform, as assumed in the design stage. The structure can be loaded with bending or torsion. A whole section, selected structural node or a specimen mounted in the structure as well as a repair or a sensor can be a test object. Two stands, one for bending and one for torsion were prepared. This paper presents the verification of the assumed strain and stress distributions on the skin panels. The measurements were performed with the use of Digital Image Correlation (DIC) as well as strain gauges. DIC measurements were performed on one skin panel of the central section. Five strain gauge rosettes were installed on both panels of the one section. In addition, one rosette was applied to one skin panel in each of two other sections. Measurements were performed on the stand for torsion as well as on the stand for bending. The results of DIC analysis and strain gauge measurement during torsion show uniform shearing strain distributions on the panels. During bending, on the tensioned side, the strains obtained indicate quite uniform strain distributions. On the compressed side, local buckling of the skin panels results in high strain gradients. Strain levels obtained with the use of a DIC analysis and strain gauge measurements were similar. Moreover, horizontal displacements of markers in the spar axis during bending was determined based on a series of photographic. The deflection line obtained in this way has a shape similar to arc, which is characteristic of the constant bending moment. The stand was tested with torsional and bending loads in order to verify the design assumptions. The results of strain distributions on the skin panels with the use of DIC and strain gauges as well as the deflection line of the spar axis indicate that the Modular Test Stand performs as assumed and can be used for tests.
Źródło:
Fatigue of Aircraft Structures; 2020, 12; 78--91
2081-7738
2300-7591
Pojawia się w:
Fatigue of Aircraft Structures
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A multicriteria approach to different land use scenarios in the Western Carpathians with the SWAT model
Autorzy:
Kowalczyk, Agnieszka W.
Grabowska-Polanowska, Beata
Garbowski, Tomasz
Kopacz, Marek
Lach, Stanisław
Mazur, Robert
Powiązania:
https://bibliotekanauki.pl/articles/27312653.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
catchment area
land use
soil erosion
SWAT model
Western Carpathians
Opis:
Water erosion in mountainous areas is a major problem, especially on steep slopes exposed to intense precipitation. This paper presents the analysis of the topsoil loss using the SWAT (Soil and Water Assessment Tool) model. The SWAT model is a deterministic catchment model with a daily time step. It was designed to anticipate changes taking place in the catchment area, such as climate change and changes in land use and development, including the quantity and quality of water resources, soil erosion and agricultural production. In addition to hydrological and environmental aspects, the SWAT model is used to address socio-economic and demographic issues, such as water supply and food production. This program is integrated with QGIS software. The results were evaluated using the following statistical coefficients: determination (R2), Nash-Sutcliff model efficiency (NS), and percentage deviation index (PBIAS). An assessment of modelling results was made in terms of their variation according to different land cover scenarios. In the case of the scenario with no change in use, the average annual loss of topsoil (average upland sediment yield) was found to be 14.3 Mg∙ha-1. The maximum upland sediment yield was 94.6 Mg∙ha-1. On the other hand, there is an accumulation of soil material in the lower part of the catchment (in-stream sediment change), on average 13.27 Mg∙ha-1 per year.
Źródło:
Journal of Water and Land Development; 2023, 57; 130--139
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 22

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