Twelve Theses on Reactive Rules for the Web

Reactivity, the ability to detect events and respond to them automatically through reactive programs, is a key requirement in many present-day information systems. Work on Web Services re ects the need for support of reactivity on a higher abstraction level than just message exchange by HTTP. This article presents the composite event query facilities of the reactive rule-based programming language XChange. Composite events are important in the dynamic world of the Web where applications, or Web Services, that have not been engineered together are composed and have to cooperate by exchanging event messages

Data Model and Query Constructs for Versatile Web Query Languages

As the Semantic Web is gaining momentum, the need for truly versatile query languages becomes increasingly apparent. A Web query language is called versatile if it can access in the same query program data in different formats (e.g. XML and RDF). Most query languages are not versatile: they have not been specifically designed to cope with both worlds, providing a uniform language and common constructs to query and transform data in various formats. Moreover, most of them do not provide a flexible data model that is powerful enough to naturally convey both Semantic Web data formats (especially RDF and Topic Maps) and XML. This article highlights challenges related to the data model and language constructs for querying both standard Web and Semantic Web data with an emphasis on facilitating sophisticated reasoning. It is shown that Xcerpt’s data model and querying constructs are particularly well-suited for the Semantic Web, but that some adjustments of the Xcerpt syntax allow for even more effective and natural querying of RDF and Topic Maps

Position of chromosomes 18, 19, 21 and 22 in 3D-preserved interphase nuclei of human and gorilla and white hand gibbon

<p>Abstract</p> <p>Background</p> <p>Even though comparative nuclear architecture studies in hominoids are sparse, nuclear chromosome architecture was shown to be conserved during hominoid evolution. Thus, it is suspected that yet unknown biological mechanisms must underlie this observation.</p> <p>Results</p> <p>Here for the first time a combination of multicolor banding (MCB) and three-dimensional analysis of interphase cells was used to characterize the position and orientation of human chromosomes #18, #19, #21 and #22 and their homologues in primate B-lymphocytic cells. In general, our data is in concordance with previous studies. The position of the four studied human chromosomes and their homologues were conserved during primate evolution. However, comparison of interphase architecture in human B-lymphocytic cells and sperm revealed differences of localization of acrocentric chromosomes. The latter might be related to the fact that the nucleolus organizing region is not active in sperm.</p> <p>Conclusion</p> <p>Studies in different tissue types may characterize more – potentially biologically relevant differences in nuclear architecture.</p

Функцыянаванне беларускіх і нямецкіх nomina agentis у сферы прафесійнай дзейнасці

У артыкуле праводзіцца даследаванне беларускіх і нямецкіх дэвербальных агентываў паводле прафесійнай прыметы ў словаўтваральным і функцыянальным плане. Мэта працы – высветліць, якія субстантывы сярод nomina agentis належаць да катэгорыі найменняў па прафесійнай прымеце і ў якіх сферах яны ўжываюцца. Апісваюцца спосабы і сродкі утварэння беларускіх і нямецкіх nomina agentis у сферы прафесійнай дзейнасці, вызначаюцца найбольш прадуктыўныя фарманты. Матэрыялы даследавання могуць быць выкарыстаны пры распрацоўцы розных пытанняў беларускага і параўнальнага мовазнаўства. Бібліягр. – 8 назваў