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Wyszukujesz frazę "Simulation analysis" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Design of polymer membrane morphology with prescribed structure and diffusion properties
Autorzy:
Cieśla, Michał
Strzelewicz, Anna
Dudek, Gabriela
Krasowska, Monika
Opis:
We study the possibility of using numerical modelling in the process of design a membrane of prescribed morphology and transport properties. We started from a real example of the cross-section of alginate membrane cross-linked by glutaraldehyde containing 25 wt% magnetite particles and searched for a numerical model that will resemble its morphological properties like amount of polymer matrix, sizes of polymer matrix domains, fractal dimension and others. Two different methods of generating models of such were proposed. After choosing the best models based on its morphological similarities to the real membrane, we study their transport properties in terms of Brownian diffusion. We showed that there is a good agreement of diffusion type and diffusion constant between the models and the real membrane.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Comprehensive review on emissions modeling of construction and mining equipment
Autorzy:
Barati, Khalegh
Kaboli, Alireza S.
Kaboli, Mohammad S.
Wydawca:
BGJ Consulting
Cytata wydawnicza:
Kaboli M.S., Kaboli A.S., Barati K., Comprehensive review on emissions modeling of construction and mining equipment, [in:] Journal of Current Construction Issues. CIVIL ENGINEERING PRESENT PROBLEMS, INNOVATIVE SOLUTIONS - Sustainable Development in Construction, ed. Jarosław Górecki, BGJ Consulting, 2016
Opis:
Construction and mining operations generally include off-road equipment working in a load and dump point and a fleet of trucks cycling between these points. The equipment used in such operations consumes large amounts of fuel and produce various air pollutants, which have negative effects on the environment. This issue necessitates the need of reducing the emissions from these operations due to their negative impacts on the environment. Reduction may be via either improvement in technology or management of the operations. In this paper, previous studies on the fuel-based emissions of construction equipment are reviewed and evaluated. Additionally, some research involving the modeling and simulation of these operations is noted. At the end, the optimum points of cost and emission for varying fleet sizes in a case study (this includes an earthmoving operation involving a loader and a variety of trucks) are compared, and suggestions are made for future studies.
Jarosław Górecki
Dostawca treści:
Repozytorium Centrum Otwartej Nauki
Inne
Tytuł:
The Optimal Timing of Strategic Action – A Real Options Approach
Autorzy:
Tuluca, Sorin
Sollars, Gordon G.
Wydawca:
Wyższa Szkoła Biznesu - National Louis Univeristy
Cytata wydawnicza:
Sollars, G.G., Tuluca, S.A., The Optimal Timing of Strategic Action – A Real Options Approach. Journal of Entrepreneurship, Management and Innovation (JEMI), 2012, vol. 8, nr 2 : Contemporary Management Concepts. Ed. by P. Staliński, s. 78-95
Opis:
The possibility of a frst-mover advantage arises in a variety of strategic choices, including product introductons, business start-ups, and mergers and acquisitons. The strategic management literature reflects ambiguity regarding the likelihood that a frst mover can or will capture additonal value. This paper uses a real optons approach to address the optmal tming of strategic moves. Previous studies have modeled real optons using either a perpetual or a European fnancial opton. With these models, a strategic choice could only be made either without respect to a tme frame (perpetual) or at a fxed point in tme (European opton.) Neither case is realistc. Companies typically have strategic optons with only a limited tme frame due to market factors, but companies may choose to act at any tme within that constraint. To reflect this reality, we adapt a method for valuing an American fnancial opton on a dividend paying stock to the real optons context. The method presented in this paper proposes a soluton for the optmum value for a project that should trigger a strategic choice, and highlights the value lost by not actng optmally. We use simulaton results to show that the tme frame available to make a strategic choice has an important effect on both the project value for when acton should be taken, as well as on the value of waitng to invest at the optmal tme. The results presented in this paper help to clarify the ambiguity that is found in the strategic management literature regarding the possibility of obtaining a frst-mover advantage. Indeed, a frst mover that acts sub-optmally could incur losses or at least not gain any advantage. A frst mover that waits to invest at the right tme based on the superior informaton supplied by models based on real optons could be beter positoned to obtain the benefts that might come from the frst move.
Dostawca treści:
Repozytorium Centrum Otwartej Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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