In an attempt to minimize errors and improve patient outcome in radiation therapy, a linear accelerator data management system was developed to provide radiation oncology physicists with a set of computerized tools to manage linear accelerator physics data. The entire program is written in Microsoft Visual Basic and has a user-friendly, front-end window with the following features and modules: ...

according to its superficial anatomical location, the thyroid gland is easily accessible by sonography. sonography allows an exact documentation of the size and thyroid volume. the relationship between thyroid volume and anthropometric characteristics is a matter of controversy. the aim of this study was to investigate thyroid volume and its determinants in healthy adult. a cross-sectional stud...

a multicone graph is defined to be join of a clique and a regular graph. a graph $ g $ is  cospectral with  graph $ h $ if their adjacency matrices have the same eigenvalues. a graph $ g $ is  said to be  determined by its spectrum or ds for short, if for any graph $ h $ with $ spec(g)=spec(h)$, we conclude that $ g $ is isomorphic to $ h $. in this paper, we present new classes of  multicone g...

banking without usury is a very important object that has been considered by experts and investigated all time. in this writing, we have explored banking debt with known profit and concluded its rightness, based on soling debt right. in this way after lending money the bank sales it to debtor with agreed price. the way is similar about person's lending to bank and thus there is no usury. i...

A cost-optimal nonperiodic inspection policy is derived for complex multicomponent systems. The model takes into consideration the degradation of all the components in the system with the use of a Bessel process with drift. The inspection times are determined by a deterministic function and depend on the system’s performance measure. The nonperiodic policy is developed by evaluating the expecte...

We study optimal monetary stabilization policy in a DSGE model with microfounded money demand. A search externality creates ‘congestion’ which causes aggregate output to be inefficient. Due to the informational frictions that give rise to money, households are unable to perfectly insure themselves against aggregate shocks. This gives rise to a welfare improving role for monetary policy that wor...

A segmented markets model of monetary policy is constructed, in which a novel feature is goods market segmentation, and its relationship to conventional asset market segmentation. The implications of the model for the response of prices, interest rates, consumption, labor supply, and output to monetary policy are determined. As well, optimal monetary policy is studied, as are the costs of infla...

Digital networks and the capability of addressable sensing devices ooer new challenges for system theory. Rather than reading sensors continuously or periodically , as has traditionally been done, addressable sensing devices allow readings to be taken aperiodically and only as needed. In this paper, we introduce the notion of a sensing policy to determine which sensors should be read and when. ...

Abstract:This study aims at measuring the relationship between students‟ attitude toward govern-ment‟s virtual social network policy making with social security feeling, in another word, to which extent social security feeling emphasizing on social networks is determined via users‟ attitude toward government‟s media policy making? Analytical-descriptive method including survey is used in ...

This paper considers a condition-based maintenance model for continuously degrading systems under continuous monitoring. After maintenance, the states of the system are randomly distributed with residual damage. We investigate a realistic maintenance policy, referred to as condition-based availability limit policy, which achieves the maximum availability level of such a system. The optimum main...