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We introduce the notion of self-adapting concurrency control algorithms --- concurrency control algorithms that consist of several rw and several ww synchronization techniques, and employ combinations of the techniques in a manner that attains a performance objective. We Consider synchronization techniques that use locking and certification. A general proof… (More)
Abst?-act In the private workspace model of concurrency control the transaction manager, TM, maintains a pr%ate workspace for each transaction. Data items accessed by a transaction, regardless of access mode, are cached in this workspace. At transaction commit time updates are made permanent in the database. This paper addresses two basic issues. First, the… (More)
This paper presents DSF-a new serverless distributed file system, aimed to improve scalability. Scalability is obtained by moving traditional file system functionality to lower (disk) levels and by using a dynamic file management assignment policy to improve load balancing.
Ross argues that the location problem for color-the problem of how it is represented as occupying a particular location in space-constitutes an objection to color subjectivism. There are two ways in which the location problem can be interpreted. First, it can be read as a why-question about the relation of visual experience to the environment represented:… (More)
 J. L. Mundy and A. J. Heller. The evolution and testing of a model-based object recognition system.  D. Reisfeld and Y. Yeshurun. Facial feature detection based on symmetry pronciples: a rst step toward recognition. 1991. in preparation.  S. Edelman and T. Poggio. Bringing the Grandmother back into the picture: a memory-based view of object… (More)