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    Wyświetlanie 1-14 z 14
    Tytuł:
    Manoeuvring areas to adapt ACAS for the maritime domain
    Autorzy:
    Baldauf, M.
    Mehdi, R.
    Deeb, H.
    Schröder-Hinrichs, J. U.
    Benedict, K.
    Krüger, C.
    Fischer, S.
    Gluch, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/135052.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    situation-dependent analysis
    risk assessment
    risk of collision
    collision probability
    prediction of manoeuvring areas
    potential areas of water
    fast time simulation
    Opis:
    Rapidly increasing numbers of ships and ship sizes pose an ever-growing challenge to the maritime industry. Although statistics indicate improved levels of safety in the industry which carries 90% of the world’s trade, the risk of navigational accidents, among other issues, remains a prime concern and priority (EMSA, 2010; 2014). In order to address these concerns, the authors turned to another high-risk industry for inspiration. Specifically, they turned to the aviation industry, which has often been used as a source of comparisons and ideas by researchers in the maritime domain. Keeping up with the trend, the authors of this paper turn to a tried-and-tested system used widely in modern aviation: the Airborne Collision Avoidance System (ACAS). The prime idea behind ACAS is to construct two virtual 3D zones around an aircraft. These zones are dynamic, and depend on the manoeuvring characteristics of a given aircraft. If the system detects an “intruder” (another aircraft) in either of the two well-defined virtual zones, it provides warnings and/or instructions to pilots of both aircraft to take certain precautionary or emergency measures. In the current paper, the authors explore whether or not such a system is feasible for use in the maritime domain and, if so, how. The paper provides a detailed analysis of the potential benefits and drawbacks of using an ACAS-like system onboard vessels. It also discusses possible means of implementation and integration with current equipment, and explores how the introduction of e-navigation may impact the proposed solution.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 43 (115); 39-47
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Palaeoneurology and palaeobiology of the dinocephalian therapsid Anteosaurus magnificus
    Autorzy:
    Benoit, J.
    Kruger, A.
    Jirah, S.
    Fernandez, V.
    Rubidge, B.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082279.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Therapsida
    Dinocephalia
    head-butting
    carnivory
    trigeminal nerve
    bony labyrinth
    Opis:
    Dinocephalians (Therapsida), some of the earliest amniotes to have evolved large body size, include the carnivorous Anteosauria and mostly herbivorous Tapinocephalia. Whilst the palaeoneurology of the Tapinocephalia has been investigated in Moschognathus whaitsi, that of the Anteosauria remains completely unknown. Here we used X-ray micro-Computed Tomography to study, for the first time, the palaeoneurology of Anteosaurus magnificus. Compared to Moschognathus, we reconstruct Anteosaurus as an agile terrestrial predator based on the enlarged fossa for the floccular lobe of the cerebellum and semicircular canals of the inner ear. A major difference between the two genera resides in the orientation of the braincase, as indicated by the angle between the long axis of the skull and the plane of the lateral semicircular canal. This angle is 25° in Anteosaurus, whereas it is 65° in Moschognathus, which suggests that the braincase of the latter was remodelled as an adaptation to head-butting. This is consistent with less cranial pachyostosis and the retention of a large canine in Anteosauria, which suggests that dentition may have been used for intraspecific fighting and display in addition to trophic interactions. The evolution of a thick skull, horns, and bosses in tapinocephalids parallels the evolutionary reduction of the canine, which lead to a shift of the agonistic function from the mouth to the skull roof, as observed in extant social ungulates. Similarly, tapinocephalians may have developed complex social behaviour.
    Źródło:
    Acta Palaeontologica Polonica; 2021, 66, 1; 29-39
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of an ultra-low volume (ULV) sprayer against a conventional sprayer, for foliar fertiliser and fungicide applications in turfgrass
    Autorzy:
    Ferguson, J.C.
    Gaussoin, R.E.
    Eastin, J.A.
    Sousek, M.D.
    Kruger, G.R.
    Powiązania:
    https://bibliotekanauki.pl/articles/65667.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    comparison
    ultra-low volume sprayer
    sprayer
    conventional sprayer
    foliar fertilizer
    fungicide
    application
    turf grass
    Rhizoctonia solani
    Opis:
    Two field studies (I and II) at the University of Nebraska-Lincoln: John Seaton Anderson Turfgrass Research Facility near Mead, NE, USA, were conducted to determine if a new ultra-low volume (ULV) sprayer can apply foliar nutrient, growth regulator, and fungicide treatments, in a manner similar to that of a conventional sprayer. Treatments were applied over creeping bentgrass ‘L-93’ (Agrostis stolonifera L.) managed as a fairway at 561 l · ha−1 and 47 l · ha−1 with the conventional and ULV sprayer, respectfully. Data were collected for chlorophyll content with a chlorophyll meter, and for the normalised difference vegetation index (NDVI) with a turf colour meter. Each plot was harvested for biomass at 21 days after treatment. Study II compared the ULV sprayer and a conventional sprayer, for the control of brown patch (Rhizoctonia solani Kuhn) in creeping bentgrass. The treatments were propiconazole and azoxystrobin. Spray volume was 561 l · ha−1 for the conventional sprayer, and 19 l · ha−1 for the ULV sprayer. Statistical differences in turf quality or dry weight reductions between the conventional and ULV sprayer were not detected. Brown patch control was also similar between the two sprayers, but azoxystrobin provided better control than propiconazole. Even with a 30-fold decrease in application volume, the results indicated that the Kamterter ULV sprayer may be a useful and effective management option for foliar fertiliser and fungicide applications in turfgrass.
    Źródło:
    Journal of Plant Protection Research; 2016, 56, 1
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Developing a comprehensive Drift Reduction Technology risk assessment scheme
    Autorzy:
    Ferguson, J.C.
    Hewitt, A.J.
    Eastin, J.A.
    Connell, R.J.
    Roten, R.L.
    Kruger, G.R.
    Powiązania:
    https://bibliotekanauki.pl/articles/66266.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Drift Reduction Technologies (DRTs) are becoming increasingly important for improving spray applications in many countries including New Zealand (NZ). Although there is a growing database on the performance of DRTs, there is no rating system showing the effectiveness of the DRT’s performance. In Europe, DRTs are classified relative to current reference technologies as part of the rating systems used to establish spray drift risk reduction. We have recommended some key elements of such a comprehensive exposure risk reduction scheme for any country, based on prior and on-going research into the performance of specific DRTs in row, tree, and vine crops. Our intention was to create a rating system to determine the effectiveness of a given technology. This rating system would improve spray application practices and environmental stewardship for a wide range of crops and application scenarios.
    Źródło:
    Journal of Plant Protection Research; 2014, 54, 1
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative study between Poland and South Africa wind climates, the related damage and implications of adopting the eurocode for wind action on buildings
    Autorzy:
    Goliger, A.
    Żurański, J.
    Giżejowski, M.
    Gaczek, M.
    Retief, J.
    Kruger, A.
    Dunaiski, P.
    Fiszer, S.
    Ćwik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/231003.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    warunki wiatrowe
    szkoda wiatrowa
    obciążenie wiatrem
    projektowanie konstrukcji
    norma
    wind climate
    wind damage
    wind loading
    structural design
    standard
    Opis:
    Wind constitutes one of the major environmental factors affecting the design and performance of built environment. Each country has its unique climatic wind conditions, and the way in which these are considered and implemented in the structural design, is important. An implementation or adoption of any new engineering design stipulations introduces a formidable challenge to the developers of the standards and the design profession. This has been experienced in some of the countries (e.g. the UK, Australia and the USA), where processes of modernising the outdated codification took place in the past. Although both Poland and South Africa are currently at the early implementation stage of the new wind loading design stipulations, there is a major difference between the circumstances of the two countries. Poland, as an EU member state, has a compulsory obligation to adopt the new uniform standarisation requirements, within a stipulated time-frame. The South African code developers, after a thorough investigation process which will be highlighted in the paper, decided voluntarily to adopt the Eurocode as the primary model document.
    Źródło:
    Archives of Civil Engineering; 2013, 59, 1; 51-95
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Full Field Nanoimprint on Mask Aligners Using Substrate Conformal Imprint Lithography Technique
    Autorzy:
    Ji, Ran
    Krüger, A.
    Hornung, M.
    Verschuuren, M.
    van de Laar, R.
    van Eekelen, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807664.pdf
    Data publikacji:
    2009-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Źródło:
    Acta Physica Polonica A; 2009, 116, S; S-187-S-189
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nowa orientacja : struktura organizacyjna dowodzenia siłami powietrznymi Niemiec
    Autorzy:
    Krüger, Hans J.
    Reindl, I.
    Powiązania:
    Przegląd Informacyjno-Dokumentacyjny / Centralny Ośrodek Naukowej Informacji Wojskowej 1992, nr 3, s. 115-123
    Współwytwórcy:
    Glina, Zbigniew. Opracowanie
    Data publikacji:
    1992
    Tematy:
    Siły powietrzne dowodzenie organizacja Niemcy, Republika Federalna 1992 r.
    Dowodzenie organizacja Niemcy, Republika Federalna 1992 r.
    Dostawca treści:
    Bibliografia CBW
    Artykuł
    Tytuł:
    Diagonalization of a Bosonic Quadratic Form Using CCM: Application on a System with Two Interpenetrating Square Lattice Antiferromagnets
    Autorzy:
    Krüger, S. A.
    Schmalfuss, D.
    Richter, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2013979.pdf
    Data publikacji:
    2000-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Ee
    75.30.Ds
    31.15.Dv
    42.50.Lc
    Opis:
    While the diagonalization of a quadratic bosonic form can always be done using a Bogolyubov transformation, the practical implementation for systems with a large number of different bosons is a tedious analytical task. Here we use the coupled cluster method to exactly diagonalise such complicated quadratic forms. This yields to a straightforward algorithm which can easily be implemented using computer algebra even for a large number of different bosons. We apply this method on a Heisenberg system with two interpenetrating square lattice antiferromagnets, which is a model for the quasi-2D antiferromagnet Ba$\text{}_{2}$Cu$\text{}_{3}$O$\text{}_{4}$Cl$\text{}_{2}$. Using a four-magnon spin wave approximation we get a complicated Hamiltonian with four different bosons, which is treated with coupled cluster method. Results are presented for magnetic ground state correlations.
    Źródło:
    Acta Physica Polonica A; 2000, 97, 5; 951-954
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    J$\text{}_{1}$-J$\text{}_{2}$-J$\text{}_{3}$ Model with Long-Range Lieb-Mattis Interaction
    Autorzy:
    Krüger, S. E.
    Richter, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1955533.pdf
    Data publikacji:
    1997-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.10.Jm
    Opis:
    Stimulated by the two-dimensional frustrated Heisenberg antiferromagnet with first-, second-, and third-neighbor couplings (J$\text{}_{1}$-J$\text{}_{2}$-J$\text{}_{3}$ model) we consider a corresponding three-parameter model with a long-range antiferromagnetic Lieb-Mattis interaction. This model can be solved exactly and leads to a better understanding of the role of frustration in the J$\text{}_{1}$-J$\text{}_{2}$-J$\text{}_{3}$ model. We calculate the correlations in the groundstate and consider their finite size behavior. Furthermore we present the full thermodynamic phase diagram. We find the possibility of a disordered phase at T=0.
    Źródło:
    Acta Physica Polonica A; 1997, 91, 2; 377-380
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Free-fall gravitational acceleration measurement using a pneumatically controlled catch-and-release-system in a semi-rotating vacuum chamber
    Autorzy:
    Mokobodi, T.
    Greeff, P.
    Kruger, O.
    Theron, N. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/221876.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    direct free fall
    gravitational acceleration
    interferometer
    Opis:
    Knowledge of gravitational acceleration in metrology is required for traceable force and pressure calibrations, furthermore the redefinition of the SI base unit of kilogram requires absolute accomplishment of the gravitational acceleration. A direct free-fall gravimeter is developed using pneumatic grippers for test mass handling and a semi-rotary actuator for repositioning, i.e. automated re-launching. The catch and release system is powered by compressed air. This eliminates electric interferences around the test mass. A simplified method of signal capturing and processing is used on the designed gravimeter. A digital frequency trigger is implemented in the post processing algorithms to ensure that the signals are analysed from the identical effective height. The experimental results measured the site gravitational acceleration of 9.786043 ms -2 with a statistical uncertainty of ± 29 μs-2.
    Źródło:
    Metrology and Measurement Systems; 2018, 25, 4; 689-699
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Użytkowanie ziemi jako czynnik krajobrazotwórczy na obszarach lessowych
    Land use as the landscape-forming factor on the loess areas
    Autorzy:
    Ostaszewska, K.
    Heinrich, J.
    Schmid, R.
    Krüger, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2084376.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    uzytkowanie ziemi
    obszary lessowe
    rownowaga
    geosystemy
    antropogenizacja
    zmiany krajobrazu
    erozja
    Niecka Nidzianska
    Opis:
    The differences between forest and agricultural loess landscapes are presented in this paper. Structure and functioning of the landscape-system were taken into account. The conclusions have been based on the results of landscape research conducted in the Nida Basin. All components of the landscape were examined, with the special focus on soils which were treated as the indicator of the landscape condition. Differences found in structure and functioning of forest and agricultural landscape open the question of making changes in the methodology of the loess landscape classification.
    Źródło:
    Prace i Studia Geograficzne; 2011, 46; 63-76
    0208-4589
    Pojawia się w:
    Prace i Studia Geograficzne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Is downer cow syndrome related to chronic botulism?
    Autorzy:
    Rulff, R.
    Schrodl, W.
    Basiouni, S.
    Neuhaus, J.
    Kruger, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/30507.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    The present work was directed to investigate the relationship between Downer cow syndrome (DCS) and chronic botulism in dairy cattle. For this purpose, a total of 52 fresh calving downer cows and 206 apparently healthy cows at 14 dairy farms were investigated for Clostridium botulinum ABE and CD antibody levels, C. botulinum and botulinum neurotoxin in rumen fluids as well as in faeces. Results indicated that the downer cows had higher IgG titers for C. botulinum ABE and CD than the healthy cows. All tested rumen fluids were negative for BoNT and C. botulinum. BoNT/D, however, and C. botulinum type D spores were detected in faecal samples of healthy and downer cows in the selected farms. In conclusion, the presence of a significantly higher C. botulinum ABE and CD antibody levels in DCS cows than in the healthy animals suggests that chronic C. botulinum toxico-infection could be a predisposing factor for DCS.
    Źródło:
    Polish Journal of Veterinary Sciences; 2015, 18, 4
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lieb-Mattis Model for Two Interpenetrating Antiferromagnets
    Autorzy:
    Schmalfuss, D.
    Krüger, S. E.
    Richter, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2012975.pdf
    Data publikacji:
    2000-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.10.Jm
    Opis:
    We investigate a frustrated Lieb-Mattis-like spin-1/2 model that is a reference model for the corresponding square-lattice Heisenberg model describing the unusual magnetic properties of Ba$\text{}_{2}$Cu$\text{}_{3}$O$\text{}_{4}$Cl$\text{}_{2}$. Due to frustration we obtain a rich magnetic phase diagram. We find two critical temperatures in accordance with recent experiments on Ba$\text{}_{2}$Cu$\text{}_{3}$O$\text{}_{4}$Cl$\text{}_{2}$.
    Źródło:
    Acta Physica Polonica A; 2000, 97, 3; 377-380
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fluorymetryczny detektor kokainy w ludzkim pocie - przenośny narkometr nowej generacji
    Flurometric detector of cocaine in a sweat sample - a new generation portable narcometer
    Autorzy:
    Walczak, R.
    Dziuban, J.
    Kruger, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/154811.pdf
    Data publikacji:
    2010
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    test paskowy
    kokaina
    fluorescencja
    lateral flow test
    cocaine
    fluorescence
    Opis:
    Wykrycie kokainy zażytej przez zawodowego kierowcę jest tak samo ważne jak przeprowadzenie testu na spożycie alkoholu. Skutki zażycia jednej i drugiej używki mogą być tragiczne. Dlatego też, istotne jest wykrycie kokainy lub jej metabolitów, za pomocą prostych w obsłudze i tanich testów, nie tylko w chwili upojenia tym narkotykiem. Pozwoli to na stwierdzenie, że kierowca w czasie pracy (jazdy samochodem) był pod wpływem kokainy. Brak jest w chwili obecnej tego typu testów. W artykule przedstawiono wyniki prac prowadzonych w ramach 7. PR UE LABONFOIL nad tanim testem na obecność kokainy lub jej metabolitów w pocie kierowcy. Test ten bazuje na jednorazowym pasku immunochromatograficznym współpracującym z ręcznym czytnikiem optycznym. Zastosowanie nowatorskiego układu detekcji optycznej umożliwia wykrycie metabolitu kokainy na poziomie do tej pory charakterystycznym dla stacjonarnych urządzeń laboratoryjnych, otwierając tym samym drogę w kierunku nowej generacji przenośnych narkometrów.
    Detection of cocaine taken by a professional driver is from safety reasons as dangerous as consumption of alcohol. Therefore, it is crucial to detect cocaine or its metabolite by the use of simple and cheap test not only while the driver is abused. The paper presents a first approach toward portable instrumentation for cheap and rapid quantitative detection of cocaine in a sweat sample developed under EU 7. FP LABONFOIL project. The test consists of a skin patch and a hand-held optical reader (Fig. 1). The reader is connected to a personal computer which collects data and calculates cocaine concentration in the sweat sample (Fig. 2). Details of the immunochromatographic strip and hand-held reader are shown in Figs. 3 and 4. The view of the hand-held reader connected to an ultra-mobile personal computer is shown in Fig. 5. The reader sends images of the flourishing control and test lines to the computer which analyes and calculates fluorescence intensity of the lines (Figs. 6, 7). During experiments immunochromatographic tests with cocaine metabolite concentration corresponding to cocaine concentration from 0 ng/ml to 20 ng/ml were used. The detection areas for different concentrations are presented in Table 1. The fluorescence intensity as a function of the cocaine metabolite concentration is shown in Fig. 8. The detection limit of cocaine was about 2 ng/ml,m which is at least 10-times better than the limit recommended by EC (30 ng/ml).
    Źródło:
    Pomiary Automatyka Kontrola; 2010, R. 56, nr 7, 7; 812-815
    0032-4140
    Pojawia się w:
    Pomiary Automatyka Kontrola
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

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