We outline a general theory of graph polynomials which covers all the examples we found in the vast literature, in particular, the chromatic polynomial, various generalizations of the Tutte polynomial, matching polynomials, interlace polynomials, and the cover polynomial of digraphs. We introduce the class of (hyper)graph polynomials definable in second order logic, and outline a research progr...

Also in this issue Editorial Commentary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 IN CONTRO L : Postexposure Prophylaxis . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Medical Lore: Hemophilia — A Look Back............................5 F e a t u r e : An Overview of the Infectious Substance Transport Requirements . . ....

v Acknowledgements vii Chapter

This paper proves that every recursively enumerable language is generated by a scattered context grammar with no more than four nonterminals and three non-context-free productions. In its conclusion, it gives an overview of the results and open problems concerning scattered context grammars and languages.

This paper proposes a new method to rank the cases classified by a decision tree. The method applies a posteriori without modification of the tree and doesn’t use additional training cases. It consists in computing the distance of the cases to the decision boundary induced by the decision tree, and to rank them according to this geometric score. When the data are numeric it is very easy to impl...

This paper presents the IPS-I-model: a model that describes the process of information problem solving (IPS) in which the Internet (I) is used to search information. The IPS-I-model is based on three studies, in which students in secondary and (post) higher education were asked to solve information problems, while thinking aloud. In-depth analyses of the thinking-aloud protocols revealed that t...

BACKGROUND An orientation to the professional landscape is necessary for novices of any health discipline. We describe an assignment aimed to develop the professional literacy of pharmacy students within their local Middle Eastern context. METHODS "Pharmacy and Health Care" is a course designed to introduce first-year students to both historic and contemporary pharmacist roles and responsibil...

The Semantic based annotation of an image is very important and a difficult task in content-based image retrieval (CBIR). The low-level features of the images are described using color and the texture features and the proposed model is used for semantic annotation of images. Also the textual annotations or the tags with multimedia content are the most effective approaches to organize and to sup...