Autor: Kamel, M.S. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Nonlinear Optimal Tracking For Missile Gimbaled Seeker Using Finite-Horizon State Dependent Riccati Equation
Autorzy:: Khamis, A.
Naidu, D. S.
Kamel, A. M.
Powiązania:: https://bibliotekanauki.pl/articles/226218.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Finite-Horizon state dependent Riccati equation
nonlinear tracking
gimbaled missile seeker
Opis:: The majority of homing guided missiles use gimbaled seekers. The equations describing seeker gimbal system are highly nonlinear. Accurate nonlinear control of the motion of the gimbaled seeker through the attached DC motors is required. In this paper, an online technique for finite-horizon nonlinear tracking problems is presented. The idea of the proposed technique is the change of variables that converts the nonlinear differential Riccati equation to a linear Lyapunov differential equation. The proposed technique is effective for wide range of operating points. Simulation results for a realistic gimbaled system with different engagement scenarios are given to illustrate the effectiveness of the proposed technique.
Źródło:: International Journal of Electronics and Telecommunications; 2014, 60, 2; 165-171
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Geostrophic current patterns off the Egyptian Mediterranean coast
Autorzy:: Kamel, M.S.
Powiązania:: https://bibliotekanauki.pl/articles/48462.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: geostrophic current circulation
hydrographic data
Egyptian Mediterranean coast
Salum Bay
Egypt
Nile Delta
Port Said
nearshore area
water mass
surface water
salinity
oxygen content
Opis:: Using objectively analysed hydrographic data, currents have been calculated off the Egyptian Mediterranean coast at the surface and at 30, 50, 75, 100, 200 and 300 m depths for the four seasons. The surface circulation is dominated by an anticyclonic circulation off Salum Bay in winter, spring and summer. In nearshore areas, the current flows eastwards at the shallower levels but westwards at the deeper levels. Off the Nile Delta, the current is almost eastward with a higher velocity in summer and autumn, while in spring it is very weak. Off the area between Port Said and Rafah, there is a clear cyclonic circulation appearing in all seasons except winter. At 50 and 75 m depth, the velocity of the circulation is weak. At 100 m depth, the circulation that appeared between Matruh and Alamen in summer decreases in area and magnitude at the former depths. At 200 and 300 m in winter, the current velocity is quite low. In spring the current flows southwards off the area between Rafah and Port Said. In summer, the current off the area between Port Said and Rafah is quite strong and flows to the south. The situation in autumn is quite similar to that in summer, except in the eastern area, where the current is a westward one.
Źródło:: Oceanologia; 2010, 52, 2; 299-310
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Rapid detection and enumeration of coliforms and Escherichia coli in River Nile using membrane filtration technique
Autorzy:: Shash, S. M.
Kamel, M. M.
Al-Wasify, R. S.
Samhan, F. A.
Powiązania:: https://bibliotekanauki.pl/articles/363162.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:: filtracja membranowa
Nil rzeka
bakterie grupy coli
membrane filtration
Nile river
total coliforms
Opis:: The purpose of this investigation was to compare Rapid Hicoliform Agar® (RHA, Himedia, India) with the conventional m-Endo Agar (DIFCO, Michigan, USA) for detection and enumeration of Total Coliforms (TC) and with the conventional Seven Hour Fecal Coliforms Agar (7hFC) for detection and enumeration of Escherichia coli using Membrane Filtration (MF) in River Nile water, Egypt. Sixty samples were collected (five samples per month) from five regions (Kafr El-Elw, El-Maasara, El-Giza, Embaba and El-Galatma) during one year (December 2005-November 2006). The results showed that total coliforms counts ranged from 103 to 104 CFU*100ml-1 using RHA but using m-Endo Agar the counts were around 104 CFU*100ml-1. Escherichia coli counts ranged from 103 to 104 CFU*100ml-1 using 7hFC Agar, while using RHA the counts ranged from 103 to 104 CFU*100ml-1. Statistical analysis showed that there was no significant difference (p=0.423) between total coliforms counts using m-Endo Agar and RHA media, also, there was no significant difference (p=0.546) between fecal coliforms (E. coli) counts using 7hFC Agar and RHA media. We conclude that RHA is a potential alternative medium for detection and enumeration of total coliforms and E. coli at the same time and the same Petri dish within 24h. Also, RHA medium was a very sensitive medium, which did not require any confirmatory tests and secured rapid recovery of total coliforms or E. coli.
Źródło:: Environmental Biotechnology; 2010, 6, 1; 6-10
1734-4964
Pojawia się w:: Environmental Biotechnology
Dostawca treści:: Biblioteka Nauki

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