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Any software made available via TIMECENTER is provided " as is " and without any express or implied warranties, including, without limitation, the implied warranty of merchantability and fitness for a particular purpose. The TIMECENTER icon on the cover combines two " arrows. " These " arrows " are letters in the so-called Rune alphabet used one millennium(More)
Electroretinograms obtained in the butterfliesAglais urticae andPieris brassicae by the procedure of Fourier interferometric stimulation (FIS) were used to construct spectral sensitivity curves. These curves, representing the combined responses of several receptor types, were approximated by summation of spectral sensitivity curves for individual pigments,(More)
High-throughput DNA sequencing produces vast amounts of data, with millions of short reads that usually have to be mapped to a reference genome or newly assembled. Both reference-based mapping and de novo assembly are computationally intensive, generating large intermediary data files, and thus require bioinformatics skills that are often lacking in the(More)
We present a temporal object data model, query language and system that support temporal database applications. We then show how equivalent temporal constructs and operations could be provided in existing object-oriented database management systems (OODBMS) and describe how we did this in the O2 system. A comparison of the two resulting systems highlights(More)
1. A fast action spectrometric method with high resolving power and high reproducibility has been developed: Fourier Interferometric Stimulation (FIS). The method, experimental set-up and application of the new technique on investigations of the spectral sensitivity of insects are discussed. 2. FIS intra- and extracellular recordings revealed thatCalliphora(More)
We present a general model for classiication structures that supports object role modelling. Objects can be associated with many roles simultaneously in a way that provides multiple clas-siication views over objects. Further, objects can change their roles through migration within a classiication graph. Object migration is controlled through the structure(More)
We present a temporal object model capable of representing the lifespan of objects and also the history of the roles and associations in which they participate. We advocate an approach of temporal generalisation rather than temporal extension in which a model in its entirety is given a temporal semantics through an orthogonal generalisation of all concepts(More)
We present a temporal object model capable of representing object lifespans and also the history of their roles and associations. We adopt an approach of temporal generalisation rather than temporal extension in which a model in its entirety is given a temporal semantics through an orthogonal generalisation of all model concepts { including the lifespan of(More)
We show how model extensibility of object-oriented data management systems can be achieved through the combination of a high-level core object data model and an architecture designed with model extensibility in mind. The resulting system, OMS/Java, is both a general data management system and a framework for the development of advanced database application(More)
E-commerce technologies have reached a level of maturity where many businesses are no longer hampered by technological limitations. However, the adoption of e-commerce technologies is slower than anticipated. We argue one of the limitations is a psychological barrier, which is created by the perception that e-commerce technologies are a whole new set of(More)