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Wyszukujesz frazę "flow aggregation" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Flow Aggregation for Energy-Aware Ad-Hoc Wireless Networks Respecting QoS Provisions
Autorzy:
Boukrim, Mustapha
Antari, Jilali
Powiązania:
https://bibliotekanauki.pl/articles/308936.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
ad hoc wireless networks
flow aggregation
global energy consumption
ILP
QoS provisions
Opis:
Emerging communication technologies are now leading developers to design IT systems taking into count their energy-related considerations. Much research performed in the area of ad-hoc wireless networks tends to distribute the flows over all nodes of the network, which increases the amount of energy consumed by each node and reduces longevity of the network. To overcome these problems, this paper seeks to aggregate a set of flows within a number of nodes that is as low as possible in order to be capable of routing those flows. This proposal allows to maximize the number of network nodes that may be turned off. The proposed solution was formulated as an integer linear programming (ILP) problem using a set of energy and quality of service (QoS) constraints. This formulation minimizes the total energy consumed by the nodes to construct a topology network that is capable of meeting QoS requirement for a set flows inserted into the network. To evaluate the efficiency of the proposed model, a performance-based comparison was conducted with another routing model. The simulation results show that the proposed model offers better performance in terms of global energy consumption and network load.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 1; 31-38
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of flow structure and colloidal forces on aggregation rate of small solid particles suspended in aqueous solutions
Autorzy:
Tyl, Grzegorz
Kondracki, Juliusz
Jasińska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/2086810.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aggregation
shear flow
DLVO
particles
colloidal forces
population balance
zbiór
przepływ ścinający
cząstki
siły koloidalne
bilans populacji
Opis:
In this paper aggregation of small solid particles in the perikinetic and orthokinetic regimes is considered. An aggregation kernel for colloidal particles is determined by solving the convection-diffusion equation for the pair probability function of the solid particles subject to simple shear and extensional flow patterns and DLVO potential field. Using the solution of the full model the applicability regions of simplified collision kernels from the literature are recognized and verified for a wide range of Péclet numbers. In the stable colloidal systems the assumption which considers only the flow pattern in a certain boundary layer around central particle results in a reasonable accuracy of the particle collision rate. However, when the influence of convective motion becomes more significant one should take into account the full flow field in a more rigorous manner and solve the convection-diffusion equation directly. Finally, the influence of flow pattern and process parameters on aggregation rate is discussed.
Źródło:
Chemical and Process Engineering; 2021, 42, 4; 369--389
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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