Browsing by Title
Now showing items 1877218791 of 25401

The Rmatrix approach to integrable systems on time scales
(lInstitute of Physics Publishing Ltd., 2008)A general unifying framework for integrable solitonlike systems on time scales is introduced. The Rmatrix formalism is applied to the algebra of δdifferential operators in terms of which one can construct an infinite ... 
R.E. Kalman: A great human being
(2010)I came to know about Prof. Kalman through a Turkish postdoc of his during my M.Sc. studies at Middle East Technical University. When I learned that I was accepted to carry on my doctoral studies under his supervision, I ... 
Rabbits
(Clockwatch Review, Inc., 1995) 
Rabi oscillations in an excitonpolariton system
(Bilkent University, 1995)The pure qiiaiitum model d(\scril)ing lîahi oscillations of excitonpolaritons in a ınicrocavity is consid(‘r(‘(l. IMiolonc'Xcilon intiT’action Hamiltonian is diagonalized with the aid of Bogoliihov canonical transformations ... 
Race, ethnicity, and political behavior
(Oxford University Press, 2017)Whether as a consequence of colonialism or more recent international migration, ethnic diversity has become a prominent feature of many contemporary democracies. Given the importance of ethnicity in structuring people’s ... 
Racing toward history: Utopia and progress in John Guare’s a free man of color
(University of Toronto Press, 2015)This article examines the way John Guare’s A Free Man of Color (2010) mobilizes a metatheatrical aesthetic to question the methods we use to organize our understandings of the past and formulate our projections of the ... 
The racist critics of Atatürk and Kemalism, from the 1930s to the 1960s
(SAGE Publications, 2011)This article examines racist attitudes toward Atatürk and Kemalism from the 1930s to the 1960s. Liberal, leftist and conservativeIslamist critics of republican Turkey's founder and his policies have contributed to a widely ... 
Radar cross section (RCS) of perfectly conducting (PEC) thin wires and its application to radar countermeasure: Chaff
(Bilkent University, 2015)In electronic warfare, active and passive countermeasures are used to jam threat RF radars. While electronic jamming pods are accepted as an active one, chaff is accepted as a passive countermeasure that consists of ... 
Radar crosssection study of cylindrical cavitybacked apertures with outer or inner material coating: the case of Epolarization
(IEEE, 1993)A dualseriesbased solution is obtained for the scattering of an Epolarized plane wave from a cavitybacked aperture which is formed by a slitted infinite circular cylinder coated with absorbing material. The material ... 
Radar crosssection study of cylindrical cavitybacked apertures with outer or inner material coating: the case of Hpolarization
(Institute of Electrical and Electronics Engineers, 199505)A dualseriesbased solution is obtained for the scattering of an Hpolarized plane wave from a slitted infinite circular cylinder coated with absorbing material from inside or outside. For both cases, numerical results ... 
Radar fingerprint extraction via variational mode decomposition
(IEEE, 2017)In this paper, a novel method for extracting radar fingerprint using the unintentional modulation on radar signals is proposed. Proposed technique decomposes the unintentional modulations into its components using Variational ... 
Radiation characteristics of a 2D parabolic reflector antenna excited by the Hpolarized complex source
(IEEE, 200209)The aim of this paper is to obtain accurate reference data for relatively large and realistic reflector antenna systems. We concentrate on a parabolic reflector antenna in the Hpolarization case. The directive primary ... 
Radiation fields of a complex source in 2D circular radome with metal gratings
(Bilkent University, 1997)In this thesis, the transmission effect of a twodimensional circular radome with periodic metal gratings is analyzed. We started with the study of gratings consisting of periodic arrays of thin lossy strips surrounded ... 
Radiation fields of the line source in a cylindrical wire grating
(Bilkent University, 1998)In this thesis, the transmission effect of a grid structure is analyzed. The grid structure is intended to model the metallic support elements of a radome. The total field for the real and complex position line sources ... 
Radiation impedance and equivalent circuit for immersed CMUT array element
(IEEE, 200610)In this paper, we present equivalent circuit for immersed capacitive micromachined ultrasonic transducers (cMUT), based on an accurate parametric model. We also present an accurate approximation for the radiation impedance ... 
Radiation impedance of an array of circular capacitive micromachined ultrasonic transducers
(IEEE, 2010)The radiation impedance of a capacitive micromachined ultrasonic transducer (cMUT) with a circular membrane is calculated analytically using its velocity profile for the frequencies up to its parallel resonance frequency ... 
Radiation impedance of an array of circular capacitive micromachined ultrasonic transducers in collapsed state
(IEEE, 201110)Radiation impedance is one of the important parameters in designing efficient and wideband capacitive micromachined ultrasonic transducer (CMUT) arrays. It determines how much acoustical power is generated in the surrounding ... 
Radiation impedance of capacitive micromachined ultrasonic transducers
(Bilkent University, 2010)Capacitive micromachined ultrasonic transducers (cMUTs) are used to transmit and receive ultrasonic signals. The device is constructed from circular membranes fabricated with surface micromachining technology. They have ... 
Radiation impedance of collapsed capacitive micromachined ultrasonic transducers
(Institute of Electrical and Electronics Engineers, 2012)The radiation impedance of a capacitive micromachined ultrasonic transducer (CMUT) array is a critical parameter to achieve high performance. In this paper, we present a calculation of the radiation impedance of collapsed, ... 
Radiation phase and Stokes parameters
(Elsevier, 19980115)The approach which has been proposed by one of us [Optics Comm. 136 (1997) 219] is developed. The quantum phase properties of radiation are determined via the conservation of the angular momentum in the interaction with a ...