The Standard Model data suggests the realization of grand unification structures in nature, in particular that of SO(10). A class of string vacua that preserve the SO(10) embedding, are the three generation free fermion heterotic–string models, that are related to Z2×Z2 orbifold compactification. Attempts to use the M–theory framework to explore further this class of models are discussed. Wilso...

The problem of line breaking consists of finding the best way to split paragraphs into lines. It has been cleverly addressed by the total-fit algorithm exposed by Knuth and Plass in a well-known paper. Similarly, page-breaking algorithms break the content flow of a document into page units. Formatting languages—such as the World Wide Web Consortium standard Extensible Stylesheet Language Format...

Programmers working on large software systems are faced with an extremely complex, information-rich environment. To help navigate through this, modern development environments allow flexible, multi-window browsing and exploration of the source code. Our focus in this paper is on pretty-printing algorithms that can display source code in useful, appealing ways in a variety of styles. Our algorit...

We present results from our study of which uses syntactically and semantically motivated information to group segments of sentences into unbreakable units for the purpose of typesetting those sentences in a region of a fixed width, using an otherwise standard dynamic programming line breaking algorithm, to minimize raggedness. In addition to a rule-based baseline segmenter, we use a very modest...

The scroll compressor, using R41 OA that has higher density and works at higher pressure than R22, is required to redesign its geometry such as wrap profile. The design parameters of wrap profile such as base circle radius, wrap height, involute end angle and discharge port have to be well determined to obtain high compressor efficiency. At first, a simulation program has been developed to pred...

INTRODUCTION Patient immobilisation is critically important for both highly conformal conventionally fractionated radiotherapy and for stereotactic body radiotherapy. Different immobilisation devices are available to maintain patient position for radiotherapy but the most suitable one remains unknown. METHODS Forty-five patients were randomly allocated to one of three immobilisation devices; ...