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Wyszukujesz frazę "Kotarski, W." wg kryterium: Autor


Wyświetlanie 1-11 z 11
Tytuł:
On Pareto and Salukwadze Optimization Problems
Autorzy:
Kotarski, W.
Powiązania:
https://bibliotekanauki.pl/articles/911205.pdf
Data publikacji:
2000
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
brzeg Pareto
optymalizacja
Pareto and Salukwadze optima
Pareto boundary
criterion space
scalarization
Opis:
In the paper, some problems of vector optimization are considered. Vector optimality is understood in the Pareto sense. Using the notion of Ponstein convexity, we formulate a 'scalarization' theorem. Two examples (vector optimization in IR^2 and an optimal-control problem for a parabolic equation with a vector performance index) are discussed. A Pareto boundary and a Salukwadze optimum are obtained for each of them. Additionally, for some vector optimization problems in IR^2, a criterion space is found. All calculations are performed with the use of Maple V. In the Appendix, a sketch of the proof of the main theorem on 'scalarization' is given.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2000, 10, 3; 465-485
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automatic plantography footprint database searching method
Autorzy:
Kocjan, K.
Kotarski, W.
Powiązania:
https://bibliotekanauki.pl/articles/333773.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
wyszukiwanie obrazów w bazach danych
Searching image databases
flat foot
shape-measure
Opis:
In this note we present a very simple database searching method for footprints of the desired flatfoot abnormality. The method is based on the new shape-measure introduced in [7]. The used measure describes flatfoot abnormalities very well, do not use reference points determined manually, so is it easily implemented for fully automatic footprints comparison task. Experiments carried out on a number of plantograms, with the help of the software prepared by the first author, approved good searching results of the described method.
Źródło:
Journal of Medical Informatics & Technologies; 2005, 9; 209-213
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The universal quality index for medical images
Autorzy:
Lisowska, A.
Kotarski, W.
Powiązania:
https://bibliotekanauki.pl/articles/332954.pdf
Data publikacji:
2002
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
wskaźnik jakości
obrazy medyczne
quality index
human visual system
medical images
Opis:
The aim of this paper is to propose a new quality index which measures the distance between a reference (source) image and its corrupted copy in the way as Human Visual System (HVS) does. The new quality index called the Mean Weighted Quality Index (MW) is defined with the help of the well known easy calculated indexes. The experiments performed on a number of medical images confirmed usefulness of the new index.
Źródło:
Journal of Medical Informatics & Technologies; 2002, 3; MI199-206
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An automatic footshape plantograms analysis based on a new shape-measure
Autorzy:
Kocjan, K.
Kotarski, W.
Powiązania:
https://bibliotekanauki.pl/articles/333053.pdf
Data publikacji:
2004
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
analiza kształtu
płaskostopie
shape analysis
flat foot
Opis:
In this note we present a method for recognition of flatfoot abnormality with the help of some new shape-measure describing numerically this abnormality efficient enough. The proposed measure can be easily implemented and used for automatic flatfoot level diagnosis. Experiments carried out on a number of the plantograms, analysed using the computer programme prepared by first of the authors, proved the usefulness of this new approach.
Źródło:
Journal of Medical Informatics & Technologies; 2004, 8; II15-20
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fourier analysis in classification of blood cells
Autorzy:
Kocjan, K.
Kotarski, W.
Powiązania:
https://bibliotekanauki.pl/articles/333147.pdf
Data publikacji:
2003
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
analiza Fouriera
komórki krwi
Fourier analysis
blood cells
Opis:
In the paper we present some results concerning the usage of Fourier analysis which we can successfully apply to distinguish between normal and pathological blood cells. We use special area function and different number of Fourier descriptors that are automatically calculated for all objects pointed out in an image. Calculations are performed with the help of the software made by the first author. Experiments performed on the same set of tested images as in [3] and [5] draw as to the same conclusions as there in [3] where the fractal analysis to shape has been used and in [5] where simple geometrical shape parameters have been applied. Other application of Fourier analysis one can find in [9].
Źródło:
Journal of Medical Informatics & Technologies; 2003, 5; MI61-66
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automatic perception of significant image features based on psychology of vision
Autorzy:
Lisowska, A.
Kotarski, W.
Powiązania:
https://bibliotekanauki.pl/articles/333672.pdf
Data publikacji:
2004
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
wewnętrzna wymiarowość
automatic perception
intrinsic dimensionality
Opis:
Recent investigations in neuropsychology and psychology of vision have proven that human eye does not get all the information from the surrounding world in the same degree. There are three classes of signals received by human brain. The more important one is the information about features such as corners, junctions, ends of lines, etc. Straight lines and edges are the second in the hierarchy of importance. And the last ones are textures they support the less important information about objects. Basing on these results, in image processing, theory of intrinsic dimensionality and related to it theory of feature extractors have been established. In the paper a survey of approaches that are used for construction of feature extractors based on intrinsic dimensionality have been presented. To carry out experiments the approach based on geometrical wavelets has been chosen and the software prepared by the first author has been used. Experiments presented in the paper have been performed on relatively complex images that had been faces' images. They confirmed that the information about the basic elements of faces (eyes, nose, lips, etc.) might be properly extracted from the face with the usage of the feature extractor. Moreover, the experiments have shown that in this way one could obtain the smallest possible amount of information, which was enough that human eyes yet have seen the face. Very promising results of experiments suggest that it is possible to use the proposed approach to face identification and recognition. Also some possible medical applications have been suggested.
Źródło:
Journal of Medical Informatics & Technologies; 2004, 7; MIP31-40
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Semi-automatic human emotions recognition method based on I2D features
Autorzy:
Lisowska, A.
Kotarski, W.
Kownacki, A.
Powiązania:
https://bibliotekanauki.pl/articles/333730.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
podstawowe emocje
rozpoznanie
wewnętrzna wymiarowość
falki geometryczne
basic emotions
recognition
intrinsic dimensionality
geometrical wavelets
Opis:
In the paper we present quite new approach to the problem of human emotion recognition with use of face images. We assume that basic emotions such as anger, disgust, fear, happiness, sadness, surprise are expressed by face mimic. Face images with the well defined emotions may be performed using the method based on geometrical wavelets (beamlets) in order to extract intrinsically two dimensional features, the most important ones from the Human Visual System point of view. Such an approach can be successfully applied in extraction process of the most important features that are responsible for recognition of basic elements of face (eyes, nose, lips, etc.). The listed elements of face have a little different location that depends on emotion expressed. It has been proved experimentally that it is possible using very small amount of information extracted from a face image, by the so-called beamlet extractor, to recognize emotion with high accuracy. Very promising results of experiments suggest that the method should be further investigated and improved.
Źródło:
Journal of Medical Informatics & Technologies; 2005, 9; 215-222
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Blood cells analysis based on simple geometrical shape descriptors
Autorzy:
Kocjan, K.
Kotarski, W.
Widuch, S.
Powiązania:
https://bibliotekanauki.pl/articles/332950.pdf
Data publikacji:
2002
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
analiza kształtu
komórki krwi
shape analysis
blood cells
Opis:
In the paper we present some results concerning application of simple shape parameters that are successfully used to distinguish between normal and pathological blood cells. All descriptors are based on shape area and its perimeter. We use five parameters that are automatically calculated for objects pointed out in the analyzed image with the help of our software. The experiments performed on the same set of tested images as in [3] let us draw the same conclusions as those reported in [3] where fractal analysis to shape has been used.
Źródło:
Journal of Medical Informatics & Technologies; 2002, 3; MI207-212
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automatic human face recognition method based on geometrical face features
Autorzy:
Makieła, M.
Kotarski, W.
Lisowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/333239.pdf
Data publikacji:
2003
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
rozpoznanie twarzy
automatyczna identyfikacja
face recognition
face's geometrical measures
automatic identification
Opis:
There are many ways to describe and recognize the human face. The paper shows one of them - the feature based method. It also considers usefulness of the face geometrical measurements in recognition and also the geometrical dependence on the features. The paper treats on the feature points detection and takes into consideration six of them, which are: two eyes, two eyebrows, nose and lips. It shows a detailed algorithm of the proposed method and describes its advantages and disadvantages. It also describes a filtering, feature points extraction and gives formulas for calculation of a face likeness coordinates. At the very end it concludes with experiments and examples of the proposed method.
Źródło:
Journal of Medical Informatics & Technologies; 2003, 5; MI47-56
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Samorząd terytorialny w oczach socjologów – dyskusja
Territorial self-government in sociologists’ eyes – a discussion
Autorzy:
Nowak, red. nauk. Marek
Śliwa, red. nauk. Paweł
Szczepański, głos w dyskusji Marek S.
Piróg, głos w dyskusji Tomasz
Kotarski, głos w dyskusji Hubert
Majcherkiewicz, glos w dyskusji Tatiana
Powiązania:
https://bibliotekanauki.pl/articles/693990.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
decentralization
local government
self-government reform
territorial communities
subjectivity
decentralizacja
samorząd terytorialny
reforma samorządowa
zbiorowości terytorialne
podmiotowość
Opis:
The last elections in Poland have substantially changed the political discourse. The new government has started to implement numerous reforms. Many of them aroused great controversy, including the one introducing changes in the local government system. This discussion can be considered as an invitation to broader considerations on the future of local government in Poland. It contains statements of six sociologists who are professionally interested in local government issues. They were inspired by three questions (asked by the editors of the text) about: (i) the possible outcome of the reform of the territorial self-government (ii) the functioning of the territorial self-government (iii) the evaluation of the discussion on the announced changes. The answers to these questions were based on the research knowledge and research experiences of the respondents and are therefore more science-based that general opinions typical for a public discussion which often manifest the worldview (or political attitudes) of the debating parties.
Ostatnie wybory w Polsce mocno zmieniły sytuację polityczną. Nowe władze przystąpiły do realizacji licznych reform. Wiele z nich wzbudziło duże kontrowersje. Dotyczy to także zapowiedzi związanych ze zmianami w systemie samorządu terytorialnego. Artykuł można potraktować jako zaproszenie do dyskusji na temat przyszłości samorządności terytorialnej w Polsce. Zawiera wypowiedzi sześciu socjologów zajmujących się problematyką samorządową. Były one inspirowane trzema pytaniami, które dotyczyły: (1) bilansu polskiej reformy samorządowej, (2) problemów funkcjonowania samorządów, (3) oceny przebiegu dyskusji poświęconej zapowiedzianym zmianom. Wypowiedzi (odpowiedzi na pytania) opierają się na kompetencjach badaczy i ich doświadczeniu badawczym, są zatem w większym stopniu odwzorowaniem wiedzy naukowej i doświadczeń badawczych niż opinii, czy światopoglądu, które właściwe są dyskursowi publicznemu.
Źródło:
Ruch Prawniczy, Ekonomiczny i Socjologiczny; 2017, 79, 3; 241-252
0035-9629
2543-9170
Pojawia się w:
Ruch Prawniczy, Ekonomiczny i Socjologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Disrupted iron metabolism in peritoneal fluid may induce oxidative stress in the peritoneal cavity of women with endometriosis
Autorzy:
Polak, G.
Barczyński, B.
Wertel, I.
Kwaśniewski, W.
Bednarek, W.
Derewianka-Polak, M.
Fraszczak, K.
Olajossy, M.
Kotarski, J.
Powiązania:
https://bibliotekanauki.pl/articles/2081934.pdf
Data publikacji:
2018
Wydawca:
Instytut Medycyny Wsi
Tematy:
Endometriosis
peritoneal fluid
oxidative stress
haemaglobin
iron
total oxidative status
total antioxidant status
Opis:
Introduction and objective. Data on the possible role of peritoneal fluid free radical-mediated oxidative damage in the pathogenesis of endometriosis still remains inconsistent. The aim of the study was to determine iron metabolism markers and their influence on oxidative stress parameters in the peritoneal fluid of women with endometriosis. Materials and method. 110 women with endometriosis and 119 patients with benign ovarian cysts were included in the study. All visible peritoneal fluid was aspirated during laparoscopy from the anterior and posterior cul-de-sacs. under direct vision to avoid blood contamination. Haemoglobin, iron, total oxidative status, and total antioxidant status were measured using standard colourimetric kits. Results. Haemoglobin, iron levels, as well as total oxidative status values were significantly higher, whereas total antioxidant status values were significantly lower in the peritoneal fluid of patients with endometriosis, in comparison to the reference groups. No differences were observed in peritoneal fluid concentrations of all parameters measured in relation to the phase of the menstrual cycle. Conclusions. Peritoneal fluid of women with endometriosis is characterized by disrupted iron metabolism. This is most likely related to an increased number of erythrocytes in the peritoneal cavity of endometriotic women, which leads to a higher concentration of haemoglobin in this environment. Impaired iron homeostasis may have a significant influence on the pathophysiology of peritoneal endometriosis by the direct impact of haemoglobin derivatives and/or formation of the pro-inflammatory and pro-oxidative environment. Peritoneal cavity oxidative stress occurs predominantly in women in advanced stages of the disease.
Źródło:
Annals of Agricultural and Environmental Medicine; 2018, 25, 4; 587-592
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-11 z 11

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