نتایج جستجو برای: valid and reliable signature

تعداد نتایج: 16845528  

Introduction: The necessity of valid and reliable assessment tools is one of the most emphasized issues in literature related to nursing students` clinical assessment. But it is believed that the present tools are mostly not valid and reliable, and can not measure students` performances properly. The aim of this study was to design a valid and reliable assessment tool for evaluation of nursing ...

Journal: :Inf. Syst. 1990
L. Edwin McKenzie Richard T. Snodgrass

In this paper we discuss extensions to the conventional relational algebra to support both aspects of transaction time, evolution of a database’s contents and evolution of a database’s schema. We define a relation’s schema to be the relation’s temporal signature, a function mapping the relation’s attribute names onto their value domains, and class, indicating the extent of support for time. We ...

2011
Maheswara Rao Valluri

A blind signature scheme is a cryptographic protocol to obtain a valid signature for a message from a signer such that signer’s view of the protocol can’t be linked to the resulting message signature pair. This paper presents blind signature scheme using Chebyshev polynomials. The security of the given scheme depends upon the intractability of the integer factorization problem and discrete loga...

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