With the prevalence of multi-core processors and cloud computing, the server consolidation using virtualization has increasingly expanded its territory, and the degree of consolidation has also become higher. As a large number of virtual machines individually require their own disks, the storage capacity of a data center could be exceeded. To address this problem, copy-onwrite storage systems a...

Considered by leaders in health care technology to be a necessary step towards the enhancement of patient care, a 5-year, nationwide license for SNOMED Clinical Terms® (SNOMED CT®) was purchased by agencies of the Department of Health and Human Services for perpetual use by any governmental or eligible public, forprofit and non-profit organization located, incorporated and operating in the U.S....

Multi-GNSS data analysis has become a new challenge with the development of satellite navigation systems. System bias is the key issue in Multi-GNSS data analysis, which has no recommended models within IGS community. We introduce the integrated data analysis model developed at the GNSS data analysis center of Shanghai Astronomical Observatory (SHAO). Based on the routine GNSS data analysis at ...

This paper examines the limits of performance in systems with periodic irregular sampling rate when the actuation is not necessarily synchronized with the sampling. For such a system, three sampling and actuation schemes are considered: when the sampling and control rate are both regular, when they are both irregular, and when the sampling rate is irregular while the control rate is regular. To...

This paper provides evidence of a feature of Hard-Disk Drives (HDDs), that we call File System Genome. Such a feature is originated by the areas where (on the HDD) the file blocks are placed by the operating system during the installation procedure. It appears from our study that the File System Genome is a distinctive and unique feature of each individual HDD. In particular, our extensive set ...