A Visual Retrieval Environment for Hypermedia Information Systems ppt

... the data manipulation is expressed by graph transformations [Andries et al. 1992]. This transformation language has a graphical syntax and semantics and contains basic operations for graph manipulations: ... schema through the instantiation relationship. ACM Transactions on Information Systems, Vol. 14, No. 1, January 1996. A Visual Retrieval Environment for Hypermedia Inf...

Ngày tải lên: 29/06/2014, 04:20

... outlined above by introducing a very fundamental data structure called Initiative (Fig. 3). An initiative is a generalization of any form of action that has a defined start and end date and is unde rtaken ... rtaken to reach a goal. Therefore, an initiative may be a program, a project, a sub-project, a pro ject phase, a work package, an activity or a task (indicated by the...

Ngày tải lên: 18/02/2014, 07:20

... the information contained in LDOCE for use in natural language processing systems. Most applications for natural language processing systems will require vocabularies substantially larger than ... The Mental Representation of Grammatical Relations, The MIT Press, Cambridge, Mass, pp.173-281 Kay, M.(198 4a) 'Functional Unification Grammar: A Formalism for Machine Tra...

Ngày tải lên: 22/02/2014, 09:20

... parallelism in a relational query execution plan and apply a dataflow approach for designing high- performance, scalable systems. In the GAMMA database machine project [De+90] each relational ... join algo- rithms, and a fifth stage that includes the aggregate opera- tors (min-max, average, etc.). The fscan and iscan stages are replicated and are separately attached to the database t...

Ngày tải lên: 07/03/2014, 14:20

... the same data base, or the same view of a restructured data base. It can be interfaced with various data management systems currently it can access a relational data base via INGRES or a network ... Colonial co Ajax?" 3.2 DATA BASE TABLES The data base cables describe the data base as viewed by the data management system. Since all dace mamags- menC syscemn deal with dace...

Ngày tải lên: 08/03/2014, 18:20

... http://spinroot.com/spin/whatispin.html. [2] N. Belaramani, M. Dahlin, L. Gao, A. Nayate, A. Venkataramani, P. Yalagandula, and J. Zheng. PRACTI replication. In Proc NSDI, May 2006. [3] N. Belaramani, J. Zheng, A. Nayate, ... part of a data plane and policies as part of a control plane. The data plane encapsulates a set of com- mon mechanisms that handle the details of storing and tr...

Ngày tải lên: 16/03/2014, 19:20

... management data in the form of access and usage logs. 1 At a general level, learning management systems display two key characteristics that are typical of the “digitization” of communication ... students, and as a form of broader scholarly communication. Do not assume that just because you can capture records you should do so; there are balances to be maintained that accommodate...

Ngày tải lên: 17/03/2014, 20:20

... this article as: Williams et al., Psychometric evaluation of a visual analog scale for the assessment of anxiety Health and Quality of Life Outcomes 2010, 8:57 Williams et al. Health and Quality ... GA-VAS and other available measures were highly satisfactory. Specifically, the GA-VAS obtained relatively high correlations with the HAM -A, HADS-Anxiety, and the mental subscales of the...

Ngày tải lên: 20/06/2014, 16:20

... channel state information is instantaneously and perfectly available at each AP and user. Also, ideal Shannon-rate coding has been assumed, that is, the impact of real-world coding and modulation schemes ... realistic models for signal propagation and cochannel interference (accounting, at least, for distance-based power loss and shadow fading effects). A proposal for a future-gene...

Ngày tải lên: 21/06/2014, 19:20

... has associated with it a stream of values, in addition to the two dedicated parameter streams, para in and para out, for the input and output parameters, respectively. Values in each stream are ... components. Each part dedicated to a par- ticular VP component is composed of exactly one parameter and one data section. The parameter section contains inter- face information for all th...

Ngày tải lên: 22/06/2014, 23:20