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Moreover , the number of companies which post philanthropy expenditures as part of their annual budget increased ( from 28 in fiscal year 90 to 54 in fiscal year 93 . The transformation phi1 ,2 maps characteristic pattern { c1 } 1 to phi1 ,2 ( { c1 } 1 ) , which could be the keyword " tumor " . The number of companies establishing a special division to promote philanthropy increased ( from 62 in fiscal year 90 to 91 in fiscal year 93 ) . If we have to represent an abstract concept , or an action , that does not have a natural visual counterpart , we have to take into account different correlation modalities between the pictorial and the semantic part [ BATINI91 ] , In iconic VQSs , a query is expressed primarily by combining icons . With the visual query system called Pictorial Query-By-Example ( PQBE ) , Papadias and Sellis proposes an approach to the problem of content-based querying geographic and image databases [ PAPADIAS95 ] . The integer that represents such a character has the $ 2 ^ { 27 } $ bit set ( which on most machines makes it a negative number ) . In [ RICH94 ] an interactive multimedia prototype is shown that allows users seating in front of a terminal to experience with a virtual reality environment . Such a kind of multiparadigmatic interface for databases has been proposed in [ CATARCI96 ] , where the selection of the appropriate interaction paradigm is made with reference to a user model that describes the user 's interest and skills . The cell ictj then posts ( { icpi } , xtj ) to the outputlist , for each icpi in Pltj.In other words , by Observation 1 of Section 2 , the transition tj can send messagesindividually to each output place pi . Emacs uses the $ 2 ^ { 25 } $ bit to indicate that the shift key was used for typing a control character .