The attenuation length and refractive index of liquid xenon for its intrinsic scintillation light ðl 1⁄4 178 nmÞ have been measured in a single experiment. The value obtained for the attenuation length is 364718 mm: The refractive index is found to be 1:6970:02: Both values were measured at a temperature of 17071 K: r 2003 Elsevier B.V. All rights reserved. PACS: 78.20.Ci; 29.40.Mc; 78.35.+c

* This work has been supported by the Spanish Government Research Grant TIC99-0474 Abstract The property called mutual exclusiveness, responsible for the degree of conditional reuse achievable after a highlevel synthesis (HLS) process, is intrinsic to the systems behavior. But sometimes it is only partially reflected in the actual description written by a designer. Our algorithm performs a tran...

This work deals with the single photon emission computed tomography (SPECT) reconstruction process. As a SPECT measurement also depends on unknown attenuation properties of the tissue, such a process is challenging. Furthermore, the given attenuation may not be a good approximation to the true attenuation field. Reasons are repositioning or movement of the patient such as relaxation during scan...

Take this banana. It is now yellow, and when I bought it yesterday it was green. How can a single object be both green all over and yellow all over without contradiction? It is, of course, the passage of time which dissolves the contradiction, but how is this possible? How can a banana ripen? These questions raise the problem of change. The problem is sometimes called the problem of temporary i...

For given input, the global trace generated by a parallel program in a shared memory mul-tiprocessing environment may change as the memory architecture and management policies change. Consequently, if trace-driven simulation is used, care must be taken to adjust the global trace to reeect the reference pattern that would result from program execution in the new environment. Since the addresses ...

Introduction: The main goal of SPECT imaging is to determine activity distribution inside the organs of the body. However, due to photon attenuation, it is almost impossible to do a quantitative study. In this paper, we suggest a mathematical relationship between activity distribution and its corresponding projections using a transfer matrix. Monte Carlo simulation was used to find a precise tr...

this research is concerned with a concept called “um-ol-baab”, which has wide applications in syntax. this article attempts to clarify this concept and specify terms which are used to directly or indirectly refer to it. this has been done by examining the views and works of a good number of syntacticians. three subgroupings have been revealed :1) devices the structure of which are compatibl...