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EARLY WARNING SIGNALS OF THE 2000/2001 TURKISH FINANCIAL CRISIS

100%

Arı A.

International Journal of Emerging and Transition Economies (IJETE)

2008

tom 1

nr ISSUE2

191-218

The 2000/2001 Turkish crisis was one of the most impressive crises that hit the emerging market economies in the late 90s. The characteristic of this crisis is not only its violence but also its suddenness. We observe two rapid crisis sequences which are different from recent financial crisis examples. The analysis of the Turkish crisis in the literature generally presents an analytical aspect that only relates the stylized facts of the crisis omitting a strong econometric basis. This paper goes further: it presents two models (OLS and Logit) which will test the implication level of the macroeconomic and financial variables in the outbreak of the crisis.

Comparative evaluation of mechanical properties of short aramid fiber on thermoplastic polymers

51%

Arı A. , Bayram A. , Karahan M. , Arslan O.

Materials Science Poland

2023

tom Vol. 41, No. 1

161--176

This study investigated the mechanical performance of short aramid fiber on polypropylene, polyethylene, polyamide 6, and polyamide 12. Extrusion, press molding, and CNC cutting methods were used in the production of composite samples. Tensile, three-point bending, drop weight and hardness tests of the composites were carried out. As the fiber volume fractions increased, the mechanical properties of the composites improved, but the most efficient fiber fractions for each matrix changed. To analyze the performance of the fibers in the matrix on the composites, scanning electron microscope (SEM) images of the fractured surfaces as a result of tensile and drop weight tests were examined. As the fiber volume fractions increased, the fiber deformation increased, and as a result, the mechanical performance of the composites was adversely affected. Analysis of variance (ANOVA) and F test were performed using signal/noise values to analyze in detail the effect of experimental parameters on output values. Finally, the results of a regression equation model were compared with the experimental readings. It was found to be in good agreement with the model and the results of the experiment.