Türkiye gibi gelişmekte olan ülkelerde ekonomik büyümeyi son zamanlarda etkileyen önemli faktörlerden ikisi turizm ve hizmet sektörüdür. Küreselleşen dünya ekonomisinde şirketler veya firmalar ürün ihracatından çok hizmet ihracatına yönelmiştir. Bir ülkede hizmet ihracatının artması için o ülkede hizmet sektörünün gelişmiş olması gerekmektedir. Bu çalışmada, Türkiye'de 1996-2017 yılları arasında hizmet ihracatı ve turizm harcamalarının ekonomik büyümeye etkisi, En Küçük Kareler (EKK) yöntemi ile tahmin edilip ekonometrik analizi yapılmıştır. Çalışma doğrultusunda 1996-2017 yılları arasında Türkiye'ye ait hizmet ihracatı, turizm harcamaları ve ekonomik büyüme verileri, World Bank Database web sitesinden dolar cinsiden temin edilip ampirik analizi yapılmıştır. Araştırmada elde edilen sonuçlara göre, hizmet ihracatı ve turizm harcamaları ile iktisadi büyüme arasında pozitif bir ilişkinin olduğu ortaya çıkmıştır. Bu iki sektörde de meydana gelen artışların ekonomik büyüme üzerinde olumlu etkiye sahip olduğu görülmüştür.
In this study, the global exponential stability (GES) of the zero solution of a nonlinear neutral volterra integro-differential equation (NVIDE) with variable lags has been investigated. Based on the Lyapunov functional approach, a new stability criterion was derived for global exponential stability criterions of the considered equation. An example with numeric simulation has been given to demonstrate the applicability and accuracy of the obtained result by MATLAB Simulink.
In this paper, the investigation of the asymptotic stability of Riemann-Liouville fractional neutral systems with variable delays has been presented. The advantage of the Lyapunov functional was used to achieve the desired results. The stability criteria obtained for zero solution of the system were formulated as linear matrix inequalities (LMIs) which can be easily solved. The advantage of the considered method is that the integer-order derivatives of the Lyapunov functionals can be directly calculated. Finally, three numerical examples have been evaluated to illustrate that the proposed method is flexible and efficient in terms of computation and to demonstrate the feasibility of established assumptions by MATLAB-Simulink.
In this paper, the investigation of the asymptotical stability of linear neutral systems with time-varying delay has been presented. In order to achieve the desired results, the integral inequality approach was used to express relationships between terms of Newton-Leibniz formula technique and was constructed an appropriate Lyapunov-Krasovskii functional. By improving a delay decay approach, the stability criteria for the zero solution of system were formulated as linear matrix inequalities (LMIs) which can be easily solved.Two numerical examples have been given to show the applicability of established assumptions and the effectiveness of proposed method by MATLAB-Simulink.
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