The following tutorial paper describes how a block-structured mass storage device, such as a Winchester disk drive, may be made to function as part of a digital audio recording and editing system: the so-called 'tapeless recorder'. It outlines the principles of random access sound file storage and buffering, together with a discussion of digital audio requirements and the historical precedent f...

compute chip: Memory and Ethernet subsystem M. Ohmacht R. A. Bergamaschi S. Bhattacharya A. Gara M. E. Giampapa B. Gopalsamy R. A. Haring D. Hoenicke D. J. Krolak J. A. Marcella B. J. Nathanson V. Salapura M. E. Wazlowski The Blue Genet/L compute chip is a dual-processor system-on-a-chip capable of delivering an arithmetic peak performance of 5.6 gigaflops. To match the memory speed to the high...

A multimedia server has to ensure that multimedia objects are eeciently stored and retrieved from the storage devices of the server. The placement policy of media objects onto the storage devices innuences the retrieval process. In this paper, we examine diierent data layout schemes for disk arrays: round-robin, random and hash-ing. First we introduce universal classes of hash functions which a...

Abstract: A Data Grid connects a collection of geographically distributed computational and storage resources that enables users to share data and other resources. Data replication, a technique much discussed by Data Grid researchers in recent years creates multiple copies of file and places them in various locations to shorten file access times. In this paper, a dynamic data replication strate...

In a Cloud Computing the data security achieved by Data Access Control Scheme. Cipher text-Policy Attribute-based Encryption (CP-ABE) is considered as one of the most suitable scheme for data access control in cloud storage. This scheme provides data owners more direct control on access policies. However, CP-ABE schemes to data access control for cloud storage systems are difficult because of t...

In this research, we develop theMPEG videomarkup language (MPML) to describeMPEG4 video contents. As an XML designed specifically for MPEG-4 bitstreams, MPML provides a friendly support for random access, portability, interoperability, flexibility, and extendibility. Wepropose an efficient compression algorithm to reduce the amount of storage space forMPML documents. Then, as two applications, ...

The semiconductor industry is often cited as a "strategic" industry in part because important learning-by-doing spillovers may justify special industrial policies. Documenting the precise nature of these spillovers is crucial for determining the advisability of such policies and is helpful for understanding the contribution of learning to endogenous growth. Yet existing empirical evidence on le...

We show that a random-access machine (RAM) can simulate any effective algorithm with only constant overhead of time, thereby supporting the Extended Church-Turing Thesis.

This paper presents an efficient diagnosis scheme for RAMs. Three March-based algorithms are proposed to diagnose simple functional faults of RAMs. A March-15N algorithm is used for locating and partially diagnosing faults of bit-oriented or word-oriented memories, where N represents the address number. Then a 3N March-like algorithm is used for locating the aggressor words (bits) of coupling f...