This work presents block codes over Gaussian integer rings. Rings of Gaussian integers extend the number of possible QAM signal constellations over Gaussian integer fields. Many well-known code constructions can be used for codes over Gaussian integer rings, e.g., the Plotkin construction or product codes. These codes enable low complexity soft decoding in the complex domain.

In this paper, we propose a new notion called Revocable-iffLinked Ring Signature (R-iff-L Ring Signature). In R-iff-L ring signatures, a signer can sign on behalf of the whole group, just like ordinary ring signatures. However, if he signs twice or more, he can be linked and his identity can be revoked by everyone. We formally define a new security model for the new notion in identity-based (ID...

Ring-opening polymerization (ROP) of strained ring-tilted metallocenophanes can be achieved thermally, via anionic initiation, or by the use of transition metal catalysts and provides access to a wide range of high molecular weight (Mw ˆ 10 ±10, Mn> 10 ) poly(metallocenes). These materials possess a variety of interesting properties and many are very easy to prepare. This article provides an ov...

The purpose of this paper is to discuss the importance of algebraic coding theory and to investigate the special case in which BIB designs and codes are constructed from planar near-rings. Application of planar near-rings to binary codes were first explored by Modisett [12] and by Fuchs, Hofer and Pilz [14]. Key word: planar near-ring, incidence structure, tactical configuration, BIBD, binary c...

We give a survey of recent applications of group rings to combinatorics and to cryptography, including their use in the differential cryptanalysis of block ciphers.

Recently there have been considerable advances towards higher speed (looMb/ s) workgroup LANs which support the existing UTP and STP structured cabling currently utilized by lOBASE-T and Token Ring LANs. This paper describes the transmission techniques used by an IEEE 802.12 Demand Priority network with UTP and STP structured cabling. The UTP transmission scheme supports category 3, 4 and 5 UTP...

Neurophysiology studies in a 50-year-old man with slowly progressive weakness of the left upper limb revealed conduction block in the ulnar nerve above the elbow. His weakness remained stable with regular subcutaneous immunoglobulin, but he noted gradual hemibody hair depigmentation. Examination also revealed unilateral left hand leukonychia (figure). MRI of the brain and cervical spine was nor...

-------------------------DOSAGE AND ADMINISTRATION--------------------------­ • All patients should be evaluated for bleeding disorder risk before prophylactic administration (2.1) • The recommended dose is 15 mg every 12 hours administered by subcutaneous injection given up to 5 to 15 minutes prior to surgery (2.1) • Administer after induction of regional block anesthesia, if used (2.1) • Redu...

background and aims: infraclavicular nerve block (icnb) is one of the most efficacious peripheral nerve blocks for upper extremity procedures, associated with several potential complications. recently, some authors have recommended ultrasound-guided peripheral nerve block for icnb. the current study is aimed to compare the outcomes of icnb utilizing combined ultrasound guidance and neurostimula...

In this paper we study the structure of Gröbner bases with respect to block orders. We extend Lazard’s theorem and the Gianni-Kalkbrenner theorem to the case of a zero-dimensional ideal whose trace in the ring generated by the first block of variables is radical. We then show that they do not hold for general zero-dimensional ideals.