In this paper, we study the first passage time of a diffusion process to a moving boundary. Under some special conditions we apply a transformation to diffusion process and to the boundary function and then in each case obtain the…

Cox regression is a well-known approach for modeling censored survival data. However, the model has an assumption of proportional hazards which requires an attention. In this study, we examine weighted estimation in Cox regression model under nonproportional hazards. Our aim…

In this paper, general information about, unionized radiation, standards and measurement routines for wireless communication systems, electromagnetic fields and antenna structures are given. The safety of mobile phones has been evaluated in terms of specific absorption ratio (SAR). This SAR…

A specific tris(3,5-di-tert-butyl-4-hydroxyphenyl)Subphthalocyaninehydroxyde (SubPc-1) derivative was synthesized and the structure of SubPc-1 was confirmed by UV-Vis, Fluorescence, FTIR, 1H NMR, 13C NMR and MALDI-TOF-MS spectroscopy. Its thermal stability and photostability tests were checked by using TGA and solar simulator, respectively.…

The inhibition of C38 steel corrosion in 1M HCl solution by 4-Amino-3-hydrazino-5-mercapto-1,2,4-triazole (AHMT) at 308K was investigated by means of weight loss, electrochemical polarization and electrochemical impedance spectroscopy (EIS). Results showed that AHMT performed as a good inhibitor for C38…

In this article, ligandless dispersive liquid–liquid microextraction based on the solidification of floating organic drop was used as a sample preparation method prior to flame atomic absorption determi nation trace amount of rhodium in standard and dust samples. Several factors…

   In this paper, we introduce a new encoding-decoding strategy for the floating-point genetic algorithms and we call the genetic algorithms which use this strategy Machine Coded Genetic Algorithms. We suggest applying classical crossover and mutation operations on the byte representations…

In this paper, we consider a single machine scheduling problem with two criteria: minimizing both total flow time with total tardiness and minimize maximum tardiness with number of tardy jobs. Unlike the classical scheduling problems, we use a job position…

The aim of this study is first to explore the profile of rural entrepreneurs, and second to identify the most important factors that determine their different embeddedness levels in rural areas. First, descriptive statistical techniques, and later on one of…

Accurate and sensitive spectrofluorimetric method was developed for determination of diiodohydroxyquinoline in presence of metronidazole. In this method the native fluorescence of diiodohydroxyquinoline in water solvent at λ =495 nm when excitation was at 250 nm is used for its…