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    Wyświetlanie 1-9 z 9
    Tytuł:
    Verified methods for computing Pareto sets: General algorithmic analysis
    Autorzy:
    G.-Tóth, B.
    Kreinovich, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/930124.pdf
    Data publikacji:
    2009
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    optymalizacja wielocelowa
    zbiór Pareto
    multi-objective optimisation
    Pareto set
    verified computing
    Opis:
    In many engineering problems, we face multi-objective optimization, with several objective functions f1, . . . , fn. We want to provide the user with the Pareto set-a set of all possible solutions x which cannot be improved in all categories (i.e., for which fj (x') fj (x) for all j and fj(x') > fj(x) for some j is impossible). The user should be able to select an appropriate trade-off between, say, cost and durability. We extend the general results about (verified) algorithmic computability of maxima locations to show that Pareto sets can also be computed.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2009, 19, 3; 369-380
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New optical equipment in 3D surface measuring
    Autorzy:
    Wenzel, K.
    Antal, A.
    Molnar, J.
    Tóth, B.
    Tamas, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/384327.pdf
    Data publikacji:
    2009
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    3D measuring
    Moiré method
    3D reconstruction of human body
    Opis:
    Referring to a Hungarian Government supported healthcare project "Intelligent tool and methodology to monitor and safeguard childhood spine deformities" (SPINE GUARD) the Department of Mechatronics, Optics and Information Engineering at Budapest University of Technology and Economics developed a new complex optical measuring equipment built up a projector and a digital camera. If the computer controlled projector projects an equidistant grid of lines then the camera takes a picture from a different position about the object to be measured and with a special software removing the grid lighted background there will be a virtual Moiré effect. After some picture processing the 3D (2,5D) reconstruction is finished. In an other working way the projector lights a rainbow on the object. The edges of the rainbow lines cut the crosssection of objects. An other special software reconstructs the 3D (2,5D) objects from the camera captured cross-section curves. Presentation is about the principle of measuring and evaluation of results and precision.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 4; 29-31
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bone mineral density (BMD) and computer tomographic measurements of the equine proximal phalanx in correlation with breaking strength
    Autorzy:
    Toth, P.
    Horvath, C.
    Ferencz, V.
    Toth, B.
    Varadi, A.
    Szenci, O.
    Bodo, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/31269.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Despite the fact that bone mineral density (BMD) is an important fracture risk predictor in human medicine, studies in equine orthopedic research are still lacking. We hypothesized that BMD correlates with bone failure and fatigue fractures of this bone. Thus, the objectives of this study were to measure the structural and mechanical properties of the proximal phalanx with dual energy X-ray absorptiometry (DXA), to correlate the data obtained from DXA and computer tomography (CT) measurements to those obtained by loading pressure examination and to establish representative region of interest (ROI) for in vitro BMD measurements of the equine proximal phalanx for predicting bone failure force. DXA was used to measure the whole bone BMD and additional three ROI sites in 14 equine proximal phalanges. Following evaluation of the bone density, whole bone, cortical width and area in the mid-diaphyseal plane were measured on CT images. Bones were broken using a manually controlled universal bone crusher to measure bone failure force and reevaluated for the site of fractures on follow-up CT images. Compressive load was applied at a constant displacement rate of 2 mm/min until failure, defined as the first clear drop in the load measurement. The lowest BMD was measured at the trabecular region (mean ± SD: 1.52 ± 0.12 g/cm2; median: 1.48 g/cm2; range: 1.38-1.83 g/cm2). There was a significant positive linear correlation between trabelcular BMD and the breaking strength (P=0.023, r=0.62). The trabecular region of the proximal phalanx appears to be the only significant indicator of failure of strength in vitro. This finding should be reassessed to further reveal the prognostic value of trabecular BMD in an in vivo fracture risk model.
    Źródło:
    Polish Journal of Veterinary Sciences; 2013, 16, 1
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of the safety stock on the occurrence probability of the stock shortage
    Autorzy:
    Korponai, J.
    Tóth, Á. B.
    Illés, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/406863.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    demand changes
    safety stock
    service level
    shortage
    stochastic
    supply accuracy
    Opis:
    The objective of the logistics management is to guarantee the stock level required for the adequate handling of production at the lowest possible level of costs and risks. The main purpose of the paper is to present the relations between stock level and risk of shortages. As a result of the research, the introduction of the safety stock is the solution to cover the effects of the uncertain factors in the supply chain. The theoretical approach of the model assumes a deterministic operational environment, in practice, however, there are several unpredictable factors influencing the operation of the production company. By using the periodic and continuous review models, the paper presents the effects of demand changes and stochastic length of replenishment time on the risk of stock availability. We need to quantify a service level which determines the accepted probability of the shortage occurrence.
    Źródło:
    Management and Production Engineering Review; 2017, 8, 1; 69-77
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Context of the inventory management expenses in the case of planned shortages
    Autorzy:
    Korponai, J.
    Tóth, Á. B.
    Illés, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/125556.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    cost factor
    optimum
    order quantity
    purchasing
    shortage
    stock holding
    czynnik kosztowy
    optymalność
    zamówienie
    zakupy
    niedobór
    zaopatrzenie gospodarstwa
    Opis:
    The main purpose of the paper is to present the relations between the different cost factors of the inventory management systems, and the context between the order quantities and the cost level. The theoretical approach of the model assumes a deterministic operational environment with planned shortages. We make the examination of the contexts by applying the ceteris paribus principle; we change only one cost factor from among the initial conditions at once and examine its effect on the cost level. By using the economic order quantity with the planned shortage model, we can define the optimal order quantity, along which our stock management can be guaranteed by the most favourable cost level. The optimisation of the inventory level and the inventory management expenses together means an important factor in the competitiveness of the company. During the definition of the optimal inventory level of purchased parts, the purchasing and stock holding costs, and also the consequence of shortages play an important role. The presentation of the specific expense factors in each other’s function, and the representation of the onetime order expenses show their proportion compared to each other and the effect of their change on the total cost, and define the opportunities of the optimisation. The significance of the model is that it represents the level line of costs, the movement of the different cost factors in relation to others and their operating mechanism. Thus, it facilitates the representation of costs and the definition of the direction of optimisation.
    Źródło:
    Engineering Management in Production and Services; 2017, 9, 1; 26-35
    2543-6597
    2543-912X
    Pojawia się w:
    Engineering Management in Production and Services
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Elemental composition and nutritional characteristics of spelt flours and wholemeals
    Autorzy:
    Sinkovič, L.
    Tóth, V.
    Rakszegi, M.
    Pipan, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/54104347.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Opis:
    Spelt (Triticum spelta) is an ancient wheat that has become a popular raw material for bakery products in the last decade owing to its unique nutritional value. In this study, the elemental and nutritional characteristics were investigated in flours and wholemeals from eleven genetic resources of spelt. Hulled and cleaned spelt grains were analysed for thousand-grain weight (TGW), grain length, and grain width characteristics. Spelt flours and wholemeals were prepared in two laboratory mills and characterised for multi-element composition, protein, total arabinoxylan (TOT-AX) and water-extractable arabinoxylan content (WE-AX). A total of twelve elements belonging to macro- (K, P, Mg, S, Ca) and micro- (Na, Fe, Mn, Zn, Mo, Cu, Cr) elements were determined. The highest coefficient of variation was found for Zn, Na and Cu in flour and for Cr, Na and WE-AX in wholemeal. Proteins ranged from 13.3-21.1%, TOT-AX from 11.4-37.3%, and WE-AX from 4.3-8.0%. Highly significant differences between spelt genetic resources were found for WE-AX, S, Na and TKW and between fractions for all macroelements, Fe, Mn, Zn, Cu, TOT-AX and WE-AX. A very strong positive Pearson correlation (>0.80) between flour and wholemeal was found for P, Zn, WE-AX and four pairs of compositional traits (P-Cu, Zn-P, Zn-Cu, protein-S). The study showed that spelt wholemeal is a higher source of minerals (K, P, Mg, Fe, Mn, Zn) and dietary fibre (total arabinoxylans) compared to spelt flour.
    Źródło:
    Journal of Elementology; 2023, 28, 1; 27-39
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ Humacu Agro na plon, zawartość cukru w burakach cukrowych i właściwości gleby w warunkach zrównoważonego systemu rozwoju rolnictwa
    The effect of Humac Agro on the yield, sugar content in sugar beet and soil characteristics under conditions of sustainable agricultural management system
    Autorzy:
    Tóth, Š.
    Rysak, W.
    Symanowicz, B.
    Šoltysová, B.
    Karahuta, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/11236729.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    Humac Agro
    buraki cukrowe
    zawartosc cukru
    wlasciwosci gleby
    rozwoj rolnictwa
    uprawa roslin
    plony roslin
    azot
    nawozenie azotem
    gleba
    Źródło:
    Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura; 2016, 71, 1; 77-86
    0365-1118
    Pojawia się w:
    Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The role of knowledge and technology in food safety at school catering services in Hungary
    Rola wiedzy i technologii w zakresie bezpieczeństwa żywności w szkole gastronomicznej na Węgrzech
    Autorzy:
    Illes, C.B.
    Toth, A.J.
    Bittsanszky, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/865654.pdf
    Data publikacji:
    2014
    Wydawca:
    The Polish Association of Agricultural and Agribusiness Economists
    Tematy:
    knowledge
    food technology
    food safety
    school
    catering service
    Hungary
    Opis:
    Providing the population with safe and good quality food is one of the most important objectives of every country. The outbreak and spread of foodborne diseases is independent of a country’s location or development level, and may occur everywhere. As most children spend their days at educational institutions, we shall focus on their food safety. Not only for their present state of health, but also because childhood nutrition and diet will basically determine their health in their adulthood and thus, influence the future economic and social performance of their society. This paper introduces background information about school catering in Hungary, based upon the results of an overall food safety survey. The results of our research showed that the food safety level of the different kitchen units is mostly determined by the level of food processing activities. The technical and technological level of the school kitchens did not significantly influence the food safety level of the kitchens. According to the results of our survey, improving the knowledge and the attitudes of employees in school kitchens is more important than technical and technological conditions.
    W pracy przedstawiono informacje na temat żywienia w placówkach szkolnych na Węgrzech, oparte na wynikach ogólnej ankiety dotyczącej bezpieczeństwa żywienia. Zapewnienie ludności bezpiecznej żywności o dobrej jakości jest najwyższym priorytetem każdego kraju. Ponieważ większość dzieci spędza swoje dzieciństwo w placówkach dydaktycznych należy skupić się na bezpieczeństwie serwowanej w nich żywności. Nie tylko ze względu na obecny stan zdrowia dzieci, ale również dlatego że odżywianie w znacznym stopniu determinuje zdrowie młodych ludzi, co wpływa na przyszłe osiągnięcia ekonomiczne i socjalne danej społeczności. Wyniki badania wykazały, że poziom bezpieczeństwa żywienia w różnych stołówkach zależaqł przede wszystkim od poziomu przetworzenia żywności. Poziom techniczny i technologiczny kuchni szkolnych nie wpłynął w znaczący sposób na poziom bezpieczeństwa żywności w nich przygotowywanej. Zgodnie z wynikami ankiety, zwiększanie wiedzy i świadomości pracowników szkolnych kuchni było ważniejsze niż warunki techniczne i technologiczne.
    Źródło:
    Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu; 2014, 16, 4
    1508-3535
    2450-7296
    Pojawia się w:
    Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Recoil Effect and Surface Excitations on the Inelastic Mean Free Paths of Electrons in Polymers
    Autorzy:
    Lesiak, B.
    Kosiński, A.
    Jablonski, A.
    Sulyok, A.
    Gergely, G.
    Tóth, J.
    Varga, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2046849.pdf
    Data publikacji:
    2006-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.35.Cd
    82.80.Pv
    87.16.Ac
    Opis:
    In this work, the influence of recoil effect and surface excitations on the inelastic mean free paths for polythiophenes is investigated. The inelastic mean free paths of electrons in polythiophenes are measured with the elastic peak electron spectroscopy method using the Ag standard and the electron elastic scattering cross-sections from the database NIST 3.1 in the electron kinetic energy range 200-5000 eV. The Monte Carlo model is applied for evaluating the electron backscattering intensities from the polymers and the Ag standard, as well as for evaluating electrons quasi-elastically backscattered from atoms of different atomic numbers (the recoil effect). The surface excitation corrections are accounted for using the formalism of Chen, with the material parameters for polythiophenes evaluated from the elastic peak electron spectroscopy method. Deviations due to recoil effect and surface excitations to the inelastic mean free paths are compared and discussed. Correction to the inelastic mean free paths due to recoil effect is considerable but is smaller, however, than the correction due to surface excitations. Accounting for recoil effect and surface excitations leads to improvement of the inelastic mean free paths, as compared to the inelastic mean free paths resulting from the predictive formulae of Gries.
    Źródło:
    Acta Physica Polonica A; 2006, 109, 6; 789-800
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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