Read e-book online Conceptual Modeling — ER '97: 16th International Conference PDF

By President Alan G. Merten (auth.), David W. Embley, Robert C. Goldstein (eds.)

ISBN-10: 3540636994

ISBN-13: 9783540636991

This ebook constitutes the refereed court cases of the sixteenth overseas convention on Conceptual Modeling, ER '97, held in l. a., California, united states, in November 1997.
The 32 revised complete papers provided within the booklet have been conscientiously chosen from a complete of ninety three submissions. additionally incorporated are complete invited papers.The quantity is split in topical sections on automatic layout, temporal modeling, languages, job modeling, utilized modeling, object-oriented modeling, theoretical concerns in modeling, event and functions, disbursed platforms, integration, and tools.

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Read or Download Conceptual Modeling — ER '97: 16th International Conference on Conceptual Modeling Los Angeles, California, USA, November3–5, 1997 Proceedings PDF

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Additional info for Conceptual Modeling — ER '97: 16th International Conference on Conceptual Modeling Los Angeles, California, USA, November3–5, 1997 Proceedings

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From XTR-ISE algorithm we can find the following relations which reduces a burden of an attacker that he/she should distinguish all eight steps; Proposition 2. The operations and the updating rule of (a, b) corresponding to X4 and Y2 , and X2 and Y4 are exactly same. Proposition 2 implies that an attacker does not need to distinguish X4 and Y2 , and X2 and Y4 . Therefore we regard X2 and Y4 as a same one, and denote them as EX2 ,Y4 . But even though X4 and Y2 are same, we denote them as X4 because Y2 is just a superfluous step in XTR-ISE except an appearance of the first time (Refer to Property 1).

Else (if a > b) Y1 . if a ≤ 4b, then (a, b) ← (a − b, b) T0 ← Cu+v [C0 , C1 , C2 , C3 ], T1 ← C1 , T2 ← C0 , T3 ← C2 . Y2 . else if a is even, then (a, b) ← (b, a/2) T0 ← D[C1 ], T1 ← C0 , T2 ← P [C3 ], T3 ← P ◦ D[C2 ]. Y3 . else if b is odd, then (a, b) ← (b, (a − b)/2) T0 ← D[C1 ], T1 ← Cu+v [C0 , C1 , C2 , C3 ], T2 ← P [C2 ], T3 ← P ◦ D[C0 ]. Y4 . 3. Set C0 ← T0 , C1 ← T1 , C2 ← T2 , C3 ← T3 . 3. Compute c˜ = Cu+v [C0 , C1 , C2 , C3 ]. 4. Output Df [˜ c] = c˜2f . 5. If a = 1 then return c˜2f else run Improved XTR Single Exponentiation with c = c˜2f and n = a.

To get the value of a subject to (15) and (16), one looks forward to searching a to make all |adi mod N|’s relatively small, which is equivalent to saying that for every i=1, …, n, |adi–kiN| is small. If let ri=di/N, i=1, …, n, the problem described above is transformed into finding a set of fractions {ki/a} with the same denominator a simultaneously approximating ri. This is a simultaneous Diophantine approximation problem, and lattice basis reduction algorithms provide an efficient solution for the problem.

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Conceptual Modeling — ER '97: 16th International Conference on Conceptual Modeling Los Angeles, California, USA, November3–5, 1997 Proceedings by President Alan G. Merten (auth.), David W. Embley, Robert C. Goldstein (eds.)


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