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    Wyświetlanie 1-8 z 8
    Tytuł:
    Hubero : a framework to simulate human behaviour in robot research
    Autorzy:
    Karwowski, Jarosław
    Dudek, Wojciech
    Węgierek, Maciej
    Winiarski, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1837361.pdf
    Data publikacji:
    2021
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    human simulation
    HRI
    social robotics
    robot control
    Opis:
    Social robots’ software is commonly tested in a simula‐ tion due to the safety and convenience reasons as well as an environment configuration repeatability assurance. An interaction between a robot and a human requires ta‐ king a person presence and his movement abilities into consideration. The purpose of the article is to present the HuBeRo framework, which can be used to simulate hu‐ man motion behaviour. The framework allows indepen‐ dent control of each individual’s activity, which distinguis‐ hes the presented approach from state‐of‐the‐art, open‐ source solutions from the robotics domain. The article presents the framework assumptions, architecture, and an exemplary application with respect to presented sce‐ narios.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2021, 15, 1; 31-38
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Developing a test site for testing the suspension of vehicles with omnidirectional wheels
    Autorzy:
    Duda, Sławomir
    Dudek, Olaf
    Gembalczyk, Grzegorz
    Machoczek, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2146604.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    omnidirectional wheel
    stand for determining excitations
    koło wielokierunkowe
    wyznaczanie wymuszeń
    Opis:
    The paper presents a test site for determining the excitations that occur as a result of the contact between the omnidirectional wheel and the road and affect the single suspension column in motor vehicles. The specific nature of these excitations during the movement of omnidirectional wheels is caused by the irregular envelope of the wheel. The proposed test site enables to determine the vertical displacements of the wheel that is rolling along the paving of the road. The conducted experiment demonstrates that the test site was constructed correctly.
    Źródło:
    Vibrations in Physical Systems; 2020, 31, 3; art. no. 2020304
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Potential and Conditions for the Development of the Creative Sector in Warsaw
    Autorzy:
    Dudek-Mańkowska, Sylwia
    Fuhrmann, Magdalena
    Grochowski, Mirosław
    Zegar, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2035425.pdf
    Data publikacji:
    2011-06-01
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    creative sector
    creativity
    Warsaw
    Opis:
    The creative sector has become an important source used to create competitive advantages of the cities. The importance of creative industries in urban development was spotted more than a decade ago. Creative capital is perceived as an impulse and engine of urban changes, a source of new advantages and attractions. Some point out that it mainly develops in big cities, where the authorities deliberately implement measures aimed at supporting and attracting creative entities. The purpose of this study is to present the condition of the creative sector in Warsaw and the way its functioning is perceived by its representatives. It also discusses the support of city authorities for the development of the creative sector.
    Źródło:
    Miscellanea Geographica. Regional Studies on Development; 2011, 15; 171-186
    0867-6046
    2084-6118
    Pojawia się w:
    Miscellanea Geographica. Regional Studies on Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of X-ray Diffraction for Residual Stress Analysis in Truncated Cones Made by Incremental Forming
    Autorzy:
    Krasowski, Bogdan
    Kubit, Andrzej
    Trzepieciński, Tomasz
    Dudek, Kazimiera
    Slota, Jan
    Powiązania:
    https://bibliotekanauki.pl/articles/102850.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    drawpiece
    incremental forming
    ISF
    steel sheet
    wytłoczka
    formowanie przyrostowe
    blacha stalowa
    Opis:
    The final accuracy of the parts formed using single point incremental forming greatly depends on the mechanical properties of the material to be formed and the residual stress formation. In this paper, an X-ray diffraction technique was used to study the distribution of the residual stress along the generating line of the conical drawpiece. A DC04 steel sheet with a thickness of 0.8 mm was used as a test material. The basic mechanical properties of the DC04 sheet metal were determined in the uniaxial tensile test according to the EN ISO 6892–1:2016. It was found that the maximum amount of the residual stress existed in a point located in the midway between a base and a truncation of the drawpiece. In the outer surface of the drawpiece, the orange peel defect associated with a rough surface appearance after SPIF a drawpiece, was observed. In contrast, the inner surface of component was characterized by linear grooves associated with the interaction of tool tip with the sheet surface. This defect is mainly influenced by vertical step size.
    Źródło:
    Advances in Science and Technology. Research Journal; 2020, 14, 2; 103-111
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Metal-induced asthma and chest X-ray changes in welders
    Autorzy:
    Wittczak, Tomasz
    Dudek, Wojciech
    Walusiak-Skorupa, Jolanta
    Świerczyńska-Machura, Dominika
    Cader, Wojciech
    Kowalczyk, Monika
    Pałczyński, Cezary
    Powiązania:
    https://bibliotekanauki.pl/articles/2180086.pdf
    Data publikacji:
    2012-06-01
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    welders
    metals
    occupational asthma
    chest X-ray changes
    Opis:
    Objectives: The aim of this study was to evaluate the coexisting factors and usefulness of diagnostic methods in metal-induced asthma in Polish welders. Materials and Methods: Examination of 50 welders occupationally exposed to metals and with suspicion of metal-induced asthma (group A), 100 welders occupationally exposed to metals but without suspicion of metal-induced asthma (group B), and two control groups (10 patients with atopic asthma and 10 healthy subjects) was carried out. Questionnaire survey, clinical examination, skin prick tests to common aeroallergens and metal salts, rest spirometry tests, X-ray, metacholine challenge and a single-blind, placebo controlled specific inhalation challenge tests with metals (or work-like conditions challenge tests) were performed. Results: In group A – in 9 cases we obtained positive results of specific inhalation challenge tests with metals (in 3 cases with nickel, in 4 cases with chromium, in 1 case with cobalt and in 1 case with manganese). Nine cases of metal-induced occupational asthma were recognized. In group B – only in one case we obtained positive results of work-like conditions challenge test (clinical and spirometry changes, eosinophil influx in induced sputum), which confirmed the diagnosis of occupational asthma. In most of examined welders (62%), pulmonary changes in chest X-ray images were noted. The statistical analysis revealed that working as a welder for more than 10 years is the coexisting factor of presence of chest X-ray changes (p- or q-type nodular changes or interstitial changes). Positive results of skin prick tests with metal salts were the coexisting factors of occupational asthma due to metals among examined group of welders. Conclusions: Specific inhalation challenge plays the key role in diagnostics of metal-induced asthma in welders. Pulmonary changes in chest X-ray were found in a significant percentage of examined welders.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2012, 25, 3; 242-250
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Static or dynamic low-frequency magnetic field? A review of literature
    Statyczne czy zmienne pole magnetyczne niskiej częstotliwości? Przegląd piśmiennictwa
    Autorzy:
    Głąb, Grzegorz
    Dudek, Jolanta
    Klimek, Krzysztof
    Skalska-Dulińska, Barbara
    Urszula Chrabota, Urszula
    Chojak-Fijałka, Katarzyna
    Ridan, Tomasz
    Glodzik, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/1798756.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Wychowania Fizycznego im. Bronisława Czecha w Krakowie
    Tematy:
    low-frequency magnetic field
    static magnetic field
    magnetic field therapy
    pole magnetyczne niskiej częstotliwości
    stałe pole magnetyczne
    magnetoterapia
    Opis:
    The therapeutic application of magnetic fi elds has experienced signifi cant growth in recent years. A small number of contraindications, as well as the lack of side effects makes both permanent magnets and alternating magnetic fi elds frequently used in physical therapy practice. In a signifi cant number of clinical studies the effi cacy of this physical factor as both an independent method, as well as supporting treatment programs has been confi rmed. In the last few years, a lot of emphasis is put on the fact that all therapeutic methods should have a scientifi c basis and their usage should meet the evidence based medicine criteria (EBM). Therefore, this work will focus on comparison of the use of permanent magnets and alternating low-frequency magnetic fi eld on the basis of the available literature, including mainly, a randomized double-blind trial. Analysis of the available literature on permanent magnet usage has shown clinical effi cacy in many diseases, however, placebo-controlled studies confi rm mainly the analgesic effect in patients after liposuction surgery, with diabetic neuropathy and with chronic pelvic pain. The use of the alternating low-frequency magnetic fi eld also leaves many questions to which scientists have still not found the answer. Randomized double-blind trial proved its therapeutic effi cacy in patients after knee arthroscopy, fractures and delayed bone unions, knee and cervical spine osteoarthritis as well as in case of leg ulceration. Alternating magnetic fi eld application has a wider therapeutic range in comparison to permanent magnets and its effectiveness is much better documented, both in clinical studies as well as randomized double-blind trials. Cite this article as: Głąb G., Dudek J., Klimek K., Skalska-Dulińska B., Chrabota U., Chojak-Fijałka K., Ridan T., Glodzik J. Static or dynamic low-frequency magnetic field? A review of literature. Med Rehabil 2016; 20(2): 31-35.
    Terapeutyczne zastosowanie pól magnetycznych wykazuje w ostatnich latach znaczący rozwój. Niewielka liczba przeciwwskazań, jak również brak działań ubocznych przyczyniają się do częstego stosowania tych zabiegów w praktyce fizykoterapeutycznej. W znacznej liczbie prac klinicznych potwierdzono skuteczność tego czynnika fizykalnego zarówno jako samodzielnej metody, jak i wspomagającej w programach terapeutycznych. W terapii stosuje się zarówno magnesy stałe, jak i zmienne pola magnetyczne. W ostatnich latach kładzie się coraz większy nacisk na to, aby wszelkiego rodzaju metody lecznicze miały podstawy naukowe, a ich zastosowanie spełniało kryteria medycyny opartej na faktach (evidence based medicine). Autorzy niniejszej pracy skupią się zatem na omówieniu zastosowania magnesów stałych i zmiennego pola magnetycznego niskiej częstotliwości na podstawie dostępnej literatury obejmującej randomizowane badania na podwójnie ślepej próbie. Analiza dostępnej literatury dotyczącej stosowania magnesów stałych wykazała ich skuteczność kliniczną w wielu schorzeniach, badania z grupą placebo potwierdziły natomiast działanie głównie przeciwbólowe u pacjentów po zabiegach liposukcji, u osób z neuropatią cukrzycową oraz u pacjentek z przewlekłym bólem miednicznym. Zastosowanie zmiennych pól elektromagnetycznych niskiej częstotliwości również pozostawia wiele pytań, na które jak do tej pory naukowcy nie znaleźli odpowiedzi. W badaniach na podwójnie ślepej próbie udowodniono skuteczność terapeutyczną u pacjentów po artroskopii stawu kolanowego, złamaniach i opóźnionym zrostem kostnym, u osób ze zmianami zwyrodnieniowymi stawów kolanowych i kręgosłupa szyjnego, a także w przypadku owrzodzeń podudzi. Działanie pól zmiennych ma w porównaniu z magnesami stałymi znacznie większy zakres terapeutyczny, a skuteczność ich działania jest o wiele lepiej udokumentowana zarówno w badaniach klinicznych, jak i randomizowanych na podwójnie ślepej próbie.
    Źródło:
    Medical Rehabilitation; 2016, 20(2); 31-35
    1427-9622
    1896-3250
    Pojawia się w:
    Medical Rehabilitation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The prevalence of asthma work relatedness: Preliminary data
    Autorzy:
    Dudek, Wojciech
    Kupryś-Lipińska, Izabela
    Wittczak, Tomasz
    Świerczyńska-Machura, Dominika
    Kupczyk, Maciej
    Walusiak-Skorupa, Jolanta
    Kuna, Piotr
    Pałczyński, Cezary
    Powiązania:
    https://bibliotekanauki.pl/articles/2177104.pdf
    Data publikacji:
    2015-08-06
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    asthma
    occupational diseases
    epidemiology
    Opis:
    Objectives About 5–10% of asthmatics do not respond well to standard treatment plan. Occupational exposure may be one of the factors that can be linked with treatment failure. The aim of the study was to assess the prevalence of work-related asthma (WRA) among adult asthmatics under follow up in an outpatient allergy clinic and to create a useful tool for detecting individuals with possible WRA. Material and Methods Preliminary 5-question questionnaire designed to recognize WRA was presented to 300 asthmatics. All patients with positive preliminary verification along with 50 subjects from control group were asked to fill up a detailed questionnaire. The WRA was diagnosed by positive match for asthma symptoms in combination with workplace exposure indicated in the detailed WRA questionnaire followed by confirmation of each WRA case by detailed exposure analysis. Results Work-related asthma was recognized in 63 subjects (21% of study group). The preliminary questionnaire has 76.9% sensitivity and 94% specificity in recognition of WRA. Occupational exposure to irritants is a risk factor of WRA recognition (relative risk (RR) = 2.09 (1.44:3.03)). Working in exposure-free environment is a factor against WRA recognition (RR = 0.38 (0.24:0.61)). Among subjects with work-related asthma, the uncontrolled course of the disease is significantly more frequent (p = 0.012). Subjects with WRA more often report sickness absenteeism due to asthma than those without WRA (9.6% vs. 3.2%, respectively), but the observed differences did not reach the statistical significance. Conclusions Short 5-question questionnaire seems to be a promising tool to detect individuals with possible work-related asthma in the outpatient setting for further evaluation and additional attention.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2015, 28, 6; 1025-1029
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Occupational exposure to diisocyanates in polyurethane foam factory workers
    Autorzy:
    Świerczyńska-Machura, Dominika
    Brzeźnicki, Sławomir
    Nowakowska-Świrta, Ewa
    Walusiak-Skorupa, Jolanta
    Wittczak, Tomasz
    Dudek, Wojciech
    Bonczarowska, Marzena
    Wesolowski, Wiktor
    Czerczak, Sławomir
    Pałczyński, Cezary
    Powiązania:
    https://bibliotekanauki.pl/articles/2177097.pdf
    Data publikacji:
    2015-08-10
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    biomarkers
    diisocyanates
    asthma
    polyurethanes
    biological monitoring
    occupational exposure
    occupational diseases
    Opis:
    Objectives The aim of the study was to evaluate health effects of occupational exposure to diisocyanates (DIC) among polyurethane foam products factory workers. Material and Methods Thirty workers had a physical examination, skin prick tests with common allergens, allergen-specific immunoglobulin E (IgE) antibodies to diisocyanates and pulmonary function tests. Concentrations of selected isocyanates in the workplace air samples as well as concentration of their metabolites in the urine samples collected from the workers of the plant were determined. Results The most frequent work-related symptoms reported by the examined subjects were rhinitis and skin symptoms. Sensitization to at least 1 common allergen was noted in 26.7% of the subjects. Spirometry changes of bronchial obstruction of a mild degree was observed in 5 workers. The specific IgE antibodies to toluene diisocyanate (TDI) and 4,4’-methylenebis(phenyl isocyanate) (MDI) were not detected in any of the patients’ serum. Cellular profiles of the collected induced sputum (ISP) did not reveal any abnormalities. Air concentrations of TDI isomers ranged 0.2–58.9 μg/m³ and in 7 cases they exceeded the Combined Exposure Index (CEI) value for those compounds. Concentrations of TDI metabolites in post-shift urine samples were significantly higher than in the case of pre-shift urine samples and in 6 cases they exceeded the British Biological Monitoring Guidance Value (BMGV – 1 μmol amine/mol creatinine). We didn’t find a correlation between urinary concentrations of TDI, concentrations in the air and concentrations of toluenediamine (TDA) in the post shift urine samples. Lack of such a correlation may be an effect of the respiratory protective equipment use. Conclusions Determination of specific IgE in serum is not sensitive enough to serve as a biomarker. Estimation of concentrations of diisocyanate metabolites in urine samples and the presence of work-related allergic symptoms seem to be an adequate method for occupational exposure monitoring of DIC, which may help to determine workers at risk as well as to recognize hazardous workplaces.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2015, 28, 6; 985-998
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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