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Search Results: 1 - 10 of 454 matches for " Esra Gedik "
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Perceptions of War and The Solutions of Mothers of Martyrs in Turkey
Esra Gedik
Fe Dergi : Feminist Ele?tiri , 2009,
Abstract: In this study, I want to evaluate mothers of martyrs’ perception of the war and solution while to protect its citizens is the state duty, with the assumption of questioning their son's death, whether they can transform being a mother of a martyr into anti-war women as women examples in the world we have seen. Obviously, as the martyr's mother, these women have acquired new identities. Nevertheless, how the above-mentioned attitude of questioning motherhood is limited by what the different discourses? As a result, these women, mothers of martyrs, are to remain silent. In this context, throughout my research, as previously mentioned, these women in Turkey have been represented, as a mother of a martyr, will be reviewed.
Spectrographic Characteristics of Turkish /h/  [PDF]
Esra Ertan
Open Journal of Acoustics (OJA) , 2013, DOI: 10.4236/oja.2013.34015

/h/ is described differently by different researchers. While some argue that /h/ is a glottal fricative, others argue that it is the voiceless counterpart of the following vowel, yet others argue that /h/ is a glide or an approximant. However, de- tailed acoustic studies focusing on /h/ are very limited. This study aims to describe the spectrographic characteristics of /h/ in Turkish. Test words consisted of 48 monosyllabic and disyllabic words containing /h/ which was followed by eight Turkish vowels. Totally 1440 tokens were analyzed. After segmentation, /h/ was classified based on its spectrographic characteristics: 1) segment exhibiting formants, 2) segment exhibiting frication (but no formants) with energy in lower frequencies and 3) segment exhibiting almost no energy. In order to find out if there is a significant difference among these three categories, Chi-square test was applied. The spectrographic characteristics of /h/ in Turkish suggest that it is more like the voiceless version of the surrounding vowels, significantly when it is in syllable initial position and the preceding vowel when in syllable final position.

Stability of Flip and Exchange Symmetric Entangled State Classes under Invertible Local Operations
Zafer Gedik
Physics , 2009, DOI: 10.1016/j.optcom.2010.09.041
Abstract: Flip and exchange symmetric (FES) many-qubit states, which can be obtained from a state with the same symmetries by means of invertible local operations (ILO), constitute a one-parameter family of curves in the Hilbert space. Eigenstates of FES ILOs correspond to vectors that cannot be transformed to other FES states. This means equivalence classes of states under ILO can be determined in a systematic way for an arbitrary number of qubits. More important, for entangled states, at the boundaries of neighboring equivalence classes, one can show that when the fidelity between the final state after an ILO and a state of the neighboring class approaches unity, probability of success decreases to zero. Therefore, the classes are stable under ILOs.
Spin Bath Decoherence of Quantum Entanglement
Zafer Gedik
Physics , 2005, DOI: 10.1016/j.ssc.2006.02.004
Abstract: We study an analytically solvable model for decoherence of a two spin system embedded in a large spin environment. As a measure of entanglement, we evaluate the concurrence for the Bell states (Einstein-Podolsky-Rosen pairs). We find that while for two separate spin baths all four Bell states lose their coherence with the same time dependence, for a common spin bath, two of the states decay faster than the others. We explain this difference by the relative orientation of the individual spins in the pair. We also examine how the Bell inequality is violated in the coherent regime. Both for one bath and two bath cases, we find that while two of the Bell states always obey the inequality, the other two initially violates the inequality at early times.
Quantum Entanglement and Order Parameter in a Paired Finite Fermi System
Zafer Gedik
Physics , 2002, DOI: 10.1016/S0038-1098(02)00551-3
Abstract: We study the pairing correlations in a finite Fermi system from quantum entanglement point of view. We investigate the relation between the order parameter, which has been introduced recently to describe both finite and infinite superconductors, and the concurrence. For a proper definition of the concurrence, we argue that a possible generalization of spin flip transformation is time reversal operation. While for a system with indefinite number of particles concurrence is a good measure of entanglement, for a finite system it does not distinguish between normal and superconducting states. We propose that the expectation value of the radial operator for the total pseudospin can be used to identify entanglement of pairing.
Eigenvalue Formulation of Quantum Mechanics Near Closed Timelike Curves
Z. Gedik
Physics , 2012,
Abstract: Einstein's field equations of gravitation are known to admit closed timelike curve (CTC) solutions. Deutsch approached the problem from the quantum information point of view and proposed a self-consistency condition. In this work, the Deutsch equation is formulated as an eigenvalue problem. The disappearance of entanglement between two qubits in an Einstein-Podolsky-Rosen (EPR) state near a CTC is demonstrated. The method is utilized to analyze the discontinuous evolution of two chronology respecting (CR) qubits near a CTC.
Quantum Phase in Nanoscopic Superconductors
Zafer Gedik
Physics , 2003,
Abstract: Using the pseudospin representation and the SU(2) phase operators we introduce a complex parameter to characterize both infinite and finite superconducting systems. While in the bulk limit the parameter becomes identical to the conventional order parameter, in the nanoscopic limit its modulus reduces to the number parity effect parameter and its phase takes discrete values. We evaluate the Josephson coupling energy and show that in bulk superconductor it reproduces the conventional expression and in the nanoscopic limit it leads to quantized Josephson effect. Finally, we study the phase flow or dual Josephson effect in a superconductor with fixed number of electrons.
The Formula of Kinetic Energy for the Closed Planar Homothetic Direct Motions  [PDF]
Ayhan Tutar, Esra Inan
Journal of Applied Mathematics and Physics (JAMP) , 2015, DOI: 10.4236/jamp.2015.35069
Abstract: In this paper, during one-parameter closed planar homothetic direct motions, the formula of kinetic energy is expressed. Then we show the relation between the formula of kinetic energy and the Steiner formula. We investigate some properties of closed planar homothetic motions. These motions appear between two coordinate systems, fixed and moving (direct motion). Finally, we show how the results can be applied to experimentally measured motions. As an example, we consider a motion of winch in the sagittal direction. We obtain the formula of kinetic energy for the motion of winch during one-parameter closed planar homothetic direct motions.
Effects of At2 Receptor Agonist Novokinin on Oxidative Stress, Inflammation and Infarct Size Due to Myocardial Ischemia-Reperfusion  [PDF]
Esra Gunduz, Engin Sahna
Journal of Biomedical Science and Engineering (JBiSE) , 2017, DOI: 10.4236/jbise.2017.105020
Abstract: Aim: Ischemia and reperfusion (IR) injury is a serious problem that is occured during thrombolytic therapy, organ transplantation, coronary angioplasty, and cardiopulmonary bypass. There is an increase in the number of AT2 receptors in some pathological conditions such as cardiac hypertrophy, myocardial infarction, congestive heart failure. This study was designed to investigate the effects AT2 receptor agonist Novokinin on infarct size, caveolin-1 (CAV-1), HSP90, ADMA, NADPH oxidase and Rhokinase associated to endothelial dysfunction and oxidative stress, and NFκB and TLR-4 levels induced by inflammation on myocardial IR. Methods: The experimental groups: Sham (C), Novokinin (N), IR and IRN. Novokinin was performed with infusion pump before ischemia, and during IR. The left main coronary artery was occluded for 30 minutes ischemia followed by 120 minutes reperfusion in anesthetized rats. CAV-1, HSP90, and NFκB levels were measured by the quantitative reverse transcriptase polymerase chain reaction (qRT-PCR), ADMA, TLR-4, NADPH oxidase, and Rhokinase levels were measured by ELISA, infarct size was measured by ImageJ, an image analysis software, in the heart tissue. Results: NFκB, HSP90, NADPH oxidase and TLR-4 levels increased with IR and significantly decreased with Novokinin. CAV-1 levels were not different between the groups. ADMA and Rhokinase levels were increased due to IR but decreased with Novokinin. Novokinin reduced infarct size due to IR. Conclusion: Our results showed that, ADMA, HSP90, NFκB, TLR-4, Rhokinase, and NADPH oxidase levels play important roles on IR injury. AT2 receptor agonist Novokinin may affect positively oxidative changes, inflammation, and endothelial function in myocardial IR injury.
Theoretical Orientations of Turkish Counselor Trainees: The Role of Thinking Styles, Epistemology and Curiosity  [PDF]
Ilkay Demir, Esra Ismen Gazioglu
Psychology (PSYCH) , 2012, DOI: 10.4236/psych.2012.37077
Abstract: Counselors vary in personality traits, worldviews, epistemic values, cognitive styles, and developmental influences, and these variations in return effect their choice of a guiding theory. This study addresses the variables associated with the theoretical orientations of Turkish psychological counseling students. Participants completed measures of curiosity, thinking styles, epistemological beliefs and a questionnaire on their theoretical choices. Three separate discriminant analysis were conducted to understand which variables differentiate between theoretical orientations. Results of the discriminant analysis revealed that conservative and liberal thinking styles and absorption dimension of curiosity differentiated between theoretical orientations.
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