Dushnik and Miller defined the dimension of a partial order P as the minimum number of linear orders whose intersection is P. Ken Bogart asked if the dimension of a partial order is an invariant of the associated comparability graph. In this paper we answer Bogart's question in the affirmative. The proof involves a characterization of the class of comparability graphs defined by Aigner and Prin...

1 Frankel SJ. The epidemiology of indications. J Epidemiol Community Health 1991;45:257-9. 2 Donaldson C, Mooney G. Needs assessment, priority setting, and contracts for health care: an economic view. BMJ 1991;303:1529-30. 3 Drummond MF, Stoddart GL, Torrance GW. Methods for the economrnc evaluation ofhealth care programmes. Oxford: Oxford University Press, 1987. 4 Williams A. Economics of coro...

Computer Graphics (CG) and Virtual Reality (VR) are two of the most interesting research fields in Computer Science. In this paper we present an application of CG and VR in arts, tourist promotion and cultural heritage. We propose a technique able to simulate the Saint Mary of the Mount staircase, a magnificent staircase in Caltagirone, a beautiful baroque town in Sicily (Italy). Our system is ...

A simple proof is given of the following particular case of the DanielMoore conjectures, recently proved in full generality by Wanner, Hairer and Nersett. The maximum error order achievable by an A-stable k-step two-derivative formula equals four and the optimum value of the corresponding error constant is achieved by the second Obrechkoff method. The arguments presented in this paper reveal so...

In this paper, we examine the behaviour of so-called passive and middle aorist forms in Greek reflected Genesis Septuagint. The Septuagint, Biblical more generally, displays a considerable aberration with respect to other varieties Ancient regarding relative frequency vis-à-vis forms. Here, explore feature Septuagint some detail, showing that there is or less consistent, binary system at stage,...

In this document we describe the scheme used for labelling the open-source Ukwabelana Zulu corpus as well as the rules employed for the Part-of-speech (POS) tagger used to assign POS to morphologically analysed words. A detailed description of the Zulu morphology, the corpus itself and its generation is given in [2]. All resources can be downloaded from http://www.cs.bris.ac.uk/Research/Machine...