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Article Tüketicinin Sosyal İlişki Ağının Promosyonlu Ürünleri Satın Alma Kararına Etkileri: Gima ve Yimpaş Gıda Reyonu Örneği(2002) Ceylan, Nildağ BaşakGünümüzde gıda işletmeleri tüketiciye yönelik satış geliştirme faaliyetlerine ağırlık vermektedirler. Bunu yaparken de daha ziyade ekonomik ve psikolojik faktörleri gözönünde bulundurmaktadırlar. Ancak sosyal bir varlık olan birey bu ürünlerden hangisini satın alacağına karar verirken içinde yer aldığı sosyal ilişki ağını oluşturan aile, akraba, arkadaş, v.b.lerden de etkilenmektedir. Bu çalışmada satın alma kararında, sosyal ilişkiler ağının, kişinin promosyonlu ürünleri satın alma kararına olan etkisini ölçmek amaçlanmıştır. Bu amaç doğrultusunda Gima ve Yimpaş gıda reyonunda 384 tüketiciye anket uygulanmıştır. Araştırma sonuçlarına göre, tüketicinin promosyonlu ürünleri satın alma kararında sosyal ilişkiler ağını oluşturan anne, baba, kardeş, yakın arkadaş, iş arkadaşı, akraba, reyon görevlilerinden etkilendiği anlaşılmıştır. Ayrıca yaş, eğitim, cinsiyet, hane geliri, medeni durum, meslek faktörlerinin promosyonlu ürünleri satın alma kararında etkili olup olmadıkları incelenmiş ve sonuçta meslek dışındaki tüm faktörlerin tüketicinin satın alma kararını etkilediği ortaya çıkmıştır.Article Citation - WoS: 72Citation - Scopus: 75On the Lupas q-analogue of the Bernstein Operator(Rocky Mt Math Consortium, 2006) Ostrovska, SofiyaLet R-n(f,q;x) : C[0, 1] -> C[0, 1] be q-analogues of the Bernstein operators defined by Lupas in 1987. If q = 1, then R-n (f, 1; x) are classical Bernstein polynomials. For q not equal 1, the operators R-n (f, q; x) are rational functions rather than polynomials. The paper deals with convergence properties of the sequence {R-n (f, q; x)}. It is proved that {R-n (f, q(n); x)} converges uniformly to f(x) for any f(x) is an element of C[0, 1] if and only if q(n) -> 1. In the case q > 0, q not equal 1 being fixed the sequence I R. (f, q; x) I converges uniformly to f(x) is an element of C[0, 1] if and only if f(x) is linear.Article Citation - WoS: 4Citation - Scopus: 3The Euler-Lagrange Theory for Schur's Algorithm: Wall Pairs(Academic Press inc Elsevier Science, 2006) Khrushchev, SThis paper develops a techniques of Wall pairs for the study of periodic exposed quadratic irrationalities in the unit ball of the Hardy algebra. (C) 2005 Elsevier Inc. All rights reserved.Article Citation - WoS: 20Citation - Scopus: 21Electrochemical Behaviour and Electrochemical Polymerization of Fluoro-Substituted Anilines(Wiley, 2002) Cihaner, A; Önal, AMThe electrochemical behaviour of three fluoro-substituted aniline monomers, 2-fluoroaniline (2FAN), 3-fluoroaniline (3FAN) and 4-fluoroaniline (4FAN), was investigated in aqueous acidic and organic media by means of cyclic voltammetry (CV) studies. Constant potential electrolysis (CPE) of the monomers in acetonitrile-water mixture (1: 1 by volume) using NaClO4 as supporting electrolyte yielded soluble polymers. The mechanism of electrochemical polymerization was investigated using in situ electron spin resonance (ESR) and in situ UV-VIS spectroscopic techniques for one of the monomers (4FAN). Both CV and in situ LTV-VIS measurements indicated that the polymers obtained are in the emeraldine base form. In situ ESR studies indicated that electrochemical polymerization involves a radical-cation as an intermediate. Characterization of polymer products have been carried out using FTIR and NMR spectroscopic techniques, and thermal behaviour was studied using differential scanning calorimetry (DSC). It was found that conductivity can be imparted to assynthesized polyfluoroanilines via iodine doping. (C) 2002 Society of Chemical Industry.Article Citation - WoS: 14Citation - Scopus: 15Yielding of Two-Layer Shrink-Fitted Composite Tubes Subject To Radial Pressure(Springer Heidelberg, 2005) Eraslan, AN; Akis, TYielding of two-layer shrink-fitted composite tubes with axially constrained ends subject to either internal or external pressure is investigated in detail. In the framework of small deformations, a state of plane strain and von Mises yield criterion, analytical expressions are obtained for critical values of the pressure leading to plastic flow. It is shown that, depending on material properties and tube dimensions, different modes of plastic deformation may occur. Yielding may commence at the inner tube or at the outer tube or simultaneously in both tubes. The conditions for different nature of plastic flow are determined. Using analytical expressions obtained for critical values of the parameters and properties of real engineering materials, various numerical examples are handled and the variation of elastic limit pressure with interference and interface radius is explained.Article G-7 Ülkelerinin Borsalarının İstanbul Menkul Kıymetler Borsası Üzerindeki Etkileri(2006) Ceylan, Nildağ BaşakBu çalışmada, DAX (Almanya), CAC 40 (Fransa), FTSE (İngiltere), S&P TSX Composite (Kanada), NIKKEI 225 (Japonya), S&P500 (Amerika), DOW JONES (Amerika), NASDAQ (Amerika) ve MIBTEL (İtalya)’den oluşan G-7 ülkeleri borsa endekslerinin, İstanbul Menkul Kıymetler Borsası (İMKB-100) üzerindeki etkileri, blok üçlemsel VAR modeli kullanılarak incelenmiştir. Elde edilen bulgular, NIKKEI 225 haricindeki diğer tüm endekslerin, İMKB-100 endeksi üzerinde pozitif ve istatistiki olarak önemli etkileri olduğunu göstermektedir. Analizlerin sonucunda, Türkiye’nin krizsiz gecen 01.01.1995-31.10.2000 dönemi için diğer borsalardan etkileşiminin azaldığı, ancak 11 Eylül saldırıları sonrası globalleşmenin arttığı dönemde ise borsa endekslerinin İMKB-100 üzerindeki etkilerinin daha da arttığı görülmüştür.Article Citation - WoS: 11Citation - Scopus: 10Cohomology of Sheaves of Frechet Algebras and Spectral Theory(Pleiades Publishing inc, 2005) Dosiev, AAWe propose a holomorpbic functional calculus for a noncommutative operator family generating a supernilpotent Lie subalgebra. This calculus extends Taylor's holomorphic functional calculus.Article Citation - WoS: 42Citation - Scopus: 47Modified Form of Liu-michel's Criterion for Global Asymptotic Stability of Fixed-Point State-Space Digital Filters Using Saturation Arithmetic(Ieee-inst Electrical Electronics Engineers inc, 2006) Singh, VimalA criterion for the global asymptotic stability of fixed-point state-space digital filters using saturation arithmetic was previously given by Liu and Michel. A modified form of their criterion is presented.Article Citation - WoS: 102Citation - Scopus: 113A 1.6-Mm, Metal Tube Ultrasonic Motor(Ieee-inst Electrical Electronics Engineers inc, 2003) Cagatay, S; Koc, B; Uchino, KA miniaturized metal tube ultrasonic motor, the dimensions of which are 1.6 mm in diameter and 6 rum in length, was developed. Two flattened surfaces with 90-degrees were ground on the outer surface of the stator. Two PZT-based piezoelectric ceramics were bonded onto these flat surfaces. The asymmetrical surface of the stator developed the split of the two degenerated orthogonal bending modes, resulting in a wobble motion. The working frequency of the 1.6-mm motor with 6 mm in length was 130 kHz. A torque of 0.5 mNm was reached at a maximum power of 45 mW with a speed of 45 rad/sec. The maximum efficiency was 16%.Article Citation - WoS: 40Citation - Scopus: 52Variable Structure Control of a Class of Uncertain Systems(Pergamon-elsevier Science Ltd, 2004) Efe, MÖ; Ünsal, C; Kaynak, O; Yu, XHThis brief paper proposes a method for tuning the parameters of a variable structure controller. The approach presented extracts the error at the output of the controller and applies a nonlinear tuning law using this error measure. The adaptation mechanism drives the state tracking error vector to the sliding hypersurface and maintains the sliding mode. In the simulations, the approach presented has been tested on the control of Dulling oscillator and the analytical claims have been justified under the existence of measurement noise, uncertainty and large nonzero initial errors. (C) 2003 Elsevier Ltd. All rights reserved.
