Abstract Optical clocks improved the accuracy of state-of-the-art cesium by more than two orders magnitude and enabled frequency comparison with a fractional uncertainty one part in 10 18 . Gravitational redshift such allows determining their height difference an 1 cm. In Europe, chronometric leveling has been extensively conducted for unifying reference systems. Temporal response leveling, whi...

Phase Change Memory (PCM) may become a viable alternative for the design of main memory systems in the next few years. However PCM suffers from limited write endurance. Therefore future adoption of PCM as a technology for main memory will depend on the availability of practical solutions for wear leveling that avoids uneven usage especially in the presence of potentially malicious users. First ...

Vertical geodesy is undergoing a revolution because of two factors. First, new precise three-dimensional position measurement techniques used over very long distances and based on extraterrestrial reference systems provide a new class and precision of geometric data previously unavailable for geophysical investigations. Second, physical models in tectonic theory for large earthquakes predict cr...

Flash memory has now become a crucial component in building Linux-based embedded computers. As the overall flash-memory lifetime is concerned with block endurance, wear leveling is needed to evenly erase all blocks. This paper presents a modularized implementation of a wear-leveling algorithm. Our goal is to instantly enable any existing Linux-based flash file systems the ability of wear leveli...

BACKGROUND Pancreatic cancer is a fatal cancer with a 5-year survival of only about 4% for all tumors. There are only published data on mortality from pancreas cancer and its epidemiology in Iran. The aim of this study was to present the mortality trends from pancreatic cancer for the Iranian population, using national death statistics in order to provide update information for its burden. ME...

karaji has introduced and explained the leveling instruments which were used at that time, in his book inb?t? al-miah al-khafiyyat (exploration for hidden water). added to the four studied leveling instruments, karaji introduces two more; “scaled vertical level” and “scaled telescopic level” which he mentions as his own inventions. in this paper after presenting these first four, the two levels...

Roghieh Kharaghani, Mohammad Shariati, Afsaneh Keramat, Masud Yunesian, Alireza Moghisi. Department of Midwifery, Zanjan University of Medical Sciences, Zanjan, Iran; Department of Community Medicine, Tehran University of Medical Sciences, Tehran, Iran; Institute for Environmental Research, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Center for Health Related S...