نتایج جستجو برای: artificial compressibility technique

تعداد نتایج: 879793  

Journal: :international journal of information, security and systems management 0
nasser yousefi young researchers and elite club, ardabil branch, islamic azad university, ardabil, iran

this paper presents a new strategy based on multi-stage fuzzy (msf) pid controller based on artificial bee colony (abc) for damping power system stabilizer (pss) in multi-machine environment. the recent studies in artificial intelligence demonstrated that the abc optimization is strong intelligent method in complicated stability problems. also, finding the parameters of pid controller in power ...

Journal: :Advances in ophthalmic plastic and reconstructive surgery 1990
J A LeGrand M O Hughes

Using an impression of the anophthalmic socket to facilitate the design of an artificial eye is common practice today. The Modified Impression technique was described in the American Journal of Ophthalmology, February 1969, by Lee Allen and Howard E. Webster. It is a highly successful method that involves taking an impression of the socket using an impression tray, then making a wax casting of ...

2014
Shefali Singh Zubair Khan Krati Saxena

Information Technology has become a main and important component to support critical infrastructure services in various sectors of our society. It is being used for sharing information and various operations. Many organizations are used to create complex network systems to give supply to the users. So due to this rapid expansion of computer usage, the security of the system has become very impo...

2009
Dhemi Harlan Oubay Hassan Ken Morgan Nigel Weatherill

In this paper, a cell vertex finite volume algorithm is presented for the simulation of 3D incompressible fluid flow on unstructured meshes. The algorithm uses an efficient edge-based data structure. The artificial compressibility concept is employed to utilize the continuity equation to couple the pressure and velocity of the fluid. The steady solution is computed using an explicit multi-stage...

2003
H. S. Tang S. Casey Jones Fotis Sotiropoulos

A composite-grid numerical method is developed for simulating unsteady, three-dimensional (3D), incompressible flows in complex geometries. The governing equations are solved using a second-order accurate, finite-volume method based on the dual time-stepping artificial compressibility approach. Overset grids are employed to discretize arbitrarily complex geometries, and a new interface algorith...

2013
Mahyar Ghorbanzadeh C O Alenoghena J O Emagbetere A M Aibinu

The increase of the base transceiver station (BTS) in most urban areas can be traced to the drive by network providers to meet demand for coverage and capacity. In traditional network planning, the final decision of BTS placement is taken by a team of radio planners, this decision is not fool proof against regulatory requirements. In this paper, an intelligent based algorithm for optimal BTS si...

Journal: :Geosciences 2021

Predicting the range of achievable strength and stiffness from stabilized soil mixtures is critical for engineering design construction, especially organic soils, which are often considered “unsuitable” due to their high compressibility lack knowledge about mechanical behavior after stabilization. This study investigates soils using machine learning (ML) methods. ML algorithms were developed tr...

Journal: :Frontiers in Earth Science 2023

The modulus of compression and coefficient compressibility soft soils are key parameters for assessing deformation geotechnical infrastructure. However, the consolidation tests used to determine these two indices time-consuming results easily heavily influenced by workmanship, testing apparatus, other factors. Therefore, it is great interest develop a simple approach accurately estimate indices...

Journal: :iranian journal of basic medical sciences 0
abbas akhgari nanotechnology research center and school of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, iran hasti sadeghi nanotechnology research center and school of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, iran mohammad ali dabbagh nanotechnology research center and school of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, iran

objective(s):the aim of this study was to improve flowability and compressibility characteristics of starch to use as a suitable excipient in direct compression tabletting. quasi-emulsion solvent diffusion was used as a crystal modification method. materials and methods: corn starch was dissolved in hydrochloric acid at 80˚c and then ethanol as a non-solvent was added with lowering temperature ...

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