In this paper, we present a full precision floating-point Cordic algorithm and a correponding word-serial Cordic architecture. The extension to existing block floating-point Cordic algorithms is in a floating-point representation for the angle. The angle is represented as a combination of exponent, micro-rotation bits and two bits to indicate prerotations over 2 and radians.

This document defines an extension block for use with the DelayTolerant Networking (DTN) Bundle Protocol. This Previous-Hop Insertion Block (PHIB) extension block is designed to be inserted by a forwarding node to provide the endpoint identifier (EID) of an endpoint of which the forwarding node is a member so that this EID may be conveyed to the next-hop receiving node. Knowledge of an EID of a...

We present a block preconditioner for LDG discretizations of Stokes equations. The dependence of its performance on the discretization parameters is investigated. An extension to Oseen equations is shown, yielding efficient and robust solvers in a wide regime of Reynolds numbers.

In this paper we describe a cryptanalysis of a key exchange scheme recently proposed by Álvarez, Tortosa, Vicent and Zamora. The scheme is based on exponentiation of block matrices over a finite field of prime order. We present an efficient reduction of the problem of disclosing the shared key to the discrete logarithm problem (DLP) in an extension of the base field.

In this paper, we present a new tweakable narrow-block mode of operation, the Extended Substitution Cipher Chaining mode (ESCC), that can be efficiently deployed in disk encryption applications. ESCC is an extension of Substitution Cipher Chaining mode (SCC) [5]. Unlike SCC, ESCC is resistant to the attacks in [6, 7, 8].

We discuss computational enhancements for the low-rank semidefinite programming algorithm, including the extension to block semidefinite programs, an exact linesearch procedure, and a dynamic rank reduction scheme. A truncated Newton method is also introduced, and several preconditioning strategies are proposed. Numerical experiments illustrating these enhancements are provided.

In contrast EVE with local anaesthetic causes leaks from epidural space to subarachnoid puncture and also perineural or transdural spread of the extradural solution to enhance intensity and block duration besides volume effect. 5-7 In this study, we aimed to evaluate the efficacy of epidural volume extension (EVE) with colloid on dose requirement of intrathecal bupivacaine with fentanyl to ABST...

In this paper, we propose a method for the analysis of tectonic movement and crustal deformation by using GNSS baseline length change rates or linear strain rates. The is applied to daily coordinate solutions continuous stations Crustal Movement Observation Network China (CMONOC). results show that: (a) are uneven in space, which prominent Tianshan, Sichuan-Yunnan, Qinghai-Tibet Plateau, Yanjin...

The Ordos Block in China experiences tectonic activity and frequent earthquakes due to compression from the Tibetan Plateau extension North Block. This has prompted construction of a high-resolution three-dimensional (3D) deformation field better understand region’s crustal movement. Considering limitations existing geodetic observations, we used InSAR, GPS, leveling observations create high-pr...