Modern cellular mobile system work on either the time division multiple access (TDMA) or code-division multiple access (CDMA) principle. In CDMA system every user is assigned a unique signature sequence to spread his information bearing signal over the available channel bandwidth irrespective of the information bandwidth. The signature sequence consists of a number of chips which is proportiona...

this article concerned on the study of signature submanifolds for curves under lie group actions se(2), sa(2) and for surfaces under se(3). signature submanifold is a regular submanifold which its coordinate components are dierential invariants of an associated manifold under lie group action, and therefore signature submanifold is a key for solving equivalence problems.

A convertible limited (multi-) verifier signature (CL(M)VS) provides controlled verifiability and preserves the privacy of the signer. Furthermore, limited verifier(s) can designate the signature to a third party or convert it into a publicly verifiable signature upon necessity. In this proposal, we first present a generic construction of convertible limited verifier signature (CLVS) into which...

Nearly all previous analytical results on the performance of direct-sequence spread-spectrum multiple-access (DS/SSMA) communication systems are restricted to systems in which the periodp of the signature sequence is equal to the number N of chips per data symbol. In many applications, however, it is necessary to employ signature sequences whose periodp is much larger than N. Thus, successive N...

This article presents an efficient divisible blind signature scheme that makes it possible to divide a blind signature with a specified value into a sequence of subsignatures with smaller values for a sequence of different designated verifications. In the proposed scheme every signature can be divided into subsignatures with arbitrary positive values as long as the total value of them is equal ...

In vertebrates, the 7SK RNA forms the scaffold of a complex, which regulates transcription pausing of RNA-polymerase II. By binding to the HEXIM protein, the complex comprising proteins LARP7 and MePCE captures the positive transcription elongation factor P-TEFb and prevents phosphorylation of pausing factors. The HEXIM-binding site embedded in the 5΄-hairpin of 7SK (HP1) encompasses a short si...

Signature based error detection techniques (e.g. the application of watchdog processors) can be easily extended to support software debugging. The run-time sequence of signatures is stored in an extension of the traditional checker. As the signatures identify the states of the program, a trace of the statements executed by the checked processor is available. The signature buffer can be efficien...

In recent years it has been trying that with regard to the question of computational complexity of discrete logarithm more strength and less in the elliptic curve than other hard issues, applications such as elliptic curve cryptography, a blind  digital signature method, other methods such as encryption replacement DLP. In this paper, a new blind digital signature scheme based on elliptic curve...

Exact match queries, wildcard match queries, and kmismatch queries are widely used in various molecular biology applications including the searching of ESTs (Expressed Sequence Tags) and DNA transcription factors. In this paper, we suggest an efficient indexing and processing mechanism for such queries. Our indexing method places a sliding window at every possible location of a DNA sequence and...

Signature analysis is an important compact method in digital testing. Applying this method, a test response sequence of a device under test is compressed by a linear feedback shift register (LFSR, for short). Masking occurs if a faulty device yields the same signature as the corresponding good device. Due to the linearity of any LFSR, this happens if and only if the 'error sequence' which is ob...