نتایج جستجو برای: distribution channel

تعداد نتایج: 818770  

D. Wu M. A. Khalighi X. Tang Z. Ghassemlooy

For an indoor non-directed line of sight optical wireless communication (NLOS-OWC) system we investigate the optimized Lambertian order (OLO) of light-emitting diodes (LEDs). We firstly derive an expression for the OLO from a conventional Lambertian LED model. Then, we analyze the indoor multi-cell NLOS-OWC channel characteristics including the optical power distribution and the multipath time ...

Journal: :CoRR 2012
Benjamin T. H. Varcoe

This paper presents a method of cryptographic key distribution using an ‘artificially’ noisy channel. This is an important development because, while it is known that a noisy channel can be used to generate unconditional secrecy, there are many circumstances in which it is not possible to have a noisy information exchange, such as in error corrected communication stacks. It is shown that two le...

Thermal hydraulics of nuclear reactor as a basis of reactor safety has a very important role in reactor design and control. The thermal-hydraulic analysis provides input data to the reactor-physics analysis, whereas the latter gives information about the distribution of heat sources, which is needed to perform the thermal-hydraulic analysis. In this study single heated channel model as a very f...

The performance of corrugated baffles inserted in a rectangular channel heat exchanger is investigated. The fluid flows and thermal distribution are determined via numerical simulations. The working fluid has a shear thinning behavior. The influence of the baffle design is explored, we interest to the “wavy” shape. The corrugation angle of baffle (α) is changed from 0° (i.e. a straight...

2015
Sandeep Sharma Rajesh Mishra

In this paper, we propose a model to simulate a wireless fading channel based on Nakagami-m distribution with m>1. The Nakagami-m fading channel is the most generalized distribution as it can generate one-sided Gaussian distribution, Rayleigh distribution and Rician distribution for m equals to 0.5, 1 and >1 respectively. In this work we have proposed a method to generate a wireless fading chan...

Journal: :پژوهش آب در کشاورزی 0
جمشید پیری مربی گروه مهندسی آب، دانشکده آب وخاک، دانشگاه زابل. حسین انصاری دانشیار گروه مهندسی آب، دانشگاه فردوسی مشهد. سمیه شیرزادی لسکوکلایه دانش آموخته دکترای اقتصاد کشاورزی دانشگاه زابل.

water distribution method based on the type of water conduits can be divided into two groups, namely, open and closed systems, while on the basis of the energy of the water flow, the two groups are gravity flow and pressurized flow. open channel type conveyance and distribution is achieved by gravity and includes channels made by embankment construction, excavation, or construction of prefabric...

ژورنال: علوم آب و خاک 2002
صلاح کوچک زاده, ,

Side channel spillways have a common usage in conveyance and distribution networks, high dams, water and wastewater treatment plants, and surface drainage networks. A side channel carries spatially varied flow with increasing discharge and their water surface profiles is a main feature in the design process. Usually, the bottom width of the channel is flared in the flow direction and an end sil...

In this paper, the exponential B-spline functions are used for the numerical solution of the advection-diffusion equation. Two numerical examples related to pure advection in a finitely long channel and the distribution of an initial Gaussian pulse are employed to illustrate the accuracy and the efficiency of the method. Obtained results are compared with some early studies.

2013
John D. Cook John Cook

This note will look at ways of computing P(X>Y)where X is a distribution modeling survival (gamma, inverse gamma, Weibull, log-normal) and Y has a uniform distribution. Each of these can be computer in closed form in terms of common statistical functions. We begin with analytical calculations and then include software implementations in R to make some of the details more explicit. Finally, we g...

Journal: :I. J. Network Security 2008
Biming Tian Mingxing He

We improve a secret sharing scheme, which enables users select their personal keys by themselves instead of being distributed by group manager and users can reuse their personal keys no matter the shared secret is renewed or recovered. Then we apply it to design a self-healing key distribution scheme. The new scheme achieves good properties. Firstly, the scheme reduces storage overhead of perso...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید