Get Advances in Smalltalk: 14th International Smalltalk PDF

By Johan Brichau, Andy Kellens, Kris Gybels, Kim Mens (auth.), Wolfgang De Meuter (eds.)

ISBN-10: 3540718354

ISBN-13: 9783540718352

ISBN-10: 3540718362

ISBN-13: 9783540718369

The 14th foreign Smalltalk convention happened within the ?rst week of September 2006 in Prague, Czech Republic. This quantity comprises the pe- reviewed technical papers that have been offered throughout the educational song of the convention. The foreign Smalltalk convention evolvedout of the yearly assembly of the ecu Smalltalk person workforce (ESUG). This assembly frequently lasts a couple of week and permits Smalltalk specialists to debate Smalltalk suggestions and envir- ments. The assembly draws a various viewers such as Smalltalkers from in addition to from academia. because of the perpetual e?ort of individuals like St´ ephane Ducasse, Noury Bouraqadi, Serge Stinckwich and Roel Wuyts, through the years the ESUG assembly used to be supplied with a separate educational examine music within which researchers may current educational effects approximately Smalltalk and its improvement instruments. regrettably, no formal book discussion board was once - sociated with this song, which made it much less beautiful for authors to publish a paper. beginning with this variation of the convention, we are hoping it will swap. An contract used to be reached with Springer to submit a post-conference lawsuits of this 14th version. i feel our group owes an immense thanks to St´ ephane for this! expectantly subsequent yr this contract can evolve right into a fifteenth version of the convention with officially introduced court cases. this can definitely inspire extra Smalltalk researchers to put up a paper! The convention permitted simply over 1/2 the submissions.

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Extra resources for Advances in Smalltalk: 14th International Smalltalk Conference, ISC 2006, Prague, Czech Republic, September 4-8, 2006, Revised Selected Papers

Sample text

E. g. receiving a beacon signal) but to logical constraints. These logical constraints can be specified programmatically or interactively: they can be obtained by applying a set of operators to specific context concepts (for example, in the case of working with the location aspect, the operation may involve rooms, corridors, etc) or defined arbitrarily in terms of the user preferences (which can involve any context aspect). As an example, suppose that we want to offer a location service in which a map appears showing where the user is standing.

On the other hand, Geometric models [11] are well suited for representing large areas where accuracy does matter or when it is necessary to calculate distances between objects with an important level of correctness. As a drawback, creating geometrical models for large maps (for example, a city) is a hard task (when not impossible) without the aid of a specialized organization. Also, geometrical models don’t add semantics to the regions they represent, they just provide the boundaries for performing calculations; so, if we want to tag a specific polygon as being the Plaza Hotel, we must do it manually.

As a case study, let’s analyze the location aspect of the example in greater detail. Context-aware applications are supposed to aid the user during his daily activities, which means that they must be able to cope with location models of different granularity; for example, if we want to offer a set of services in the user’s office, small distances are important and a fine-grained location model should be used. On the other hand, if we want to offer services when the user is moving in his car along the country, the granularity of the location model must be larger, so that adaptation can be provided according to the user’s activity.

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Advances in Smalltalk: 14th International Smalltalk Conference, ISC 2006, Prague, Czech Republic, September 4-8, 2006, Revised Selected Papers by Johan Brichau, Andy Kellens, Kris Gybels, Kim Mens (auth.), Wolfgang De Meuter (eds.)


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