High-volume transaction processing speed is critical for adequate performance in many enterprise application servers. We describe our experiences using an object-oriented persistency framework to achieve greatly enhanced server response by the transparent use of main-memory database technology. We took an application server whose data persistency is abstracted via a persistent object framework ...

The main trust of this paper is to explore the inter-company variations in persistency experience for a sample of 99 U.K. life insurers, using data collected and published by the U.K. financial services regulator. Our first objective is to ascertain whether the undoubted differences in persistency among U.K. long-term insurers are random in nature (as opposed to having some systematic features)...

With the objective of evaluating measures of milk yield persistency, 27,000 test-day milk yield records from 3362 first lactations of Brazilian Gyr cows that calved between 1990 and 2007 were analyzed with a random regression model. Random, additive genetic and permanent environmental effects were modeled using Legendre polynomials of order 4 and 5, respectively. Residual variance was mod...

XML is the de facto standard for exchanging data between aribtrary applications. There are many efforts to integrate XML into object-oriented programming languages reaching from the simple document object model (DOM) to XML class generators or even to the introduction of new programming languages. Another as desired feature as XML is persistency. The integration of persistency into object-orien...

In many formalizations of a changing world things do not change all the t ime but are persistent thoughout a time interval. Often this persistency is represented by facts refering to intervals int which are still valid if int is replaced by any subinterval i n t ' Approaches l ike episode propagat ion or Penberthy's temporal unification try to employ this property for efficient reasoning. Howev...

The notion of persistency, based on the rule "no action can disable another one" is one of the classical notions in concurrency theory. We recall two ways of generalization of this notion: the first is "no action can kill another one" and the second "no action can kill another enabled one". Afterwards we present an infinite hierarchy of computations in which one action disables another one for ...

introduction: lactation yield and persistency are two economic important traits in dairy cow. the production level of a dairy cow is determined by a joint effect of genetic and environmental factors.the main factors determining the total amount of milk production are milk yield at the peak of lactation and persistency as well as length of lactation period. persistency are defined as a extent to...