The authors propose a new type of hash iterative structure ─ the ring-iterative structure with feedback which is subdivided into the single feedback ring iteration and the multiple feedback ring iteration, namely SFRI and MFRI. Prove that SFRI is at least equivalent to the MD structure in security, and MFRI is at least equivalent to SFRI in security (property 1 makes people incline to believe M...

An overview of recent advances in nuclear magnetic resonance (NMR) coupled with separation technologies and their application in natural product analysis is given and discussed. The different modes of LC-NMR operation are described, as well as how technical improvements assist in establishing LC-NMR as an important tool in the analysis of plant-derived compounds. On-flow, stopped-flow and loop-...

There are many methods on how to improve reliability of the system. One of the common methods is a concept of redundancy. Redundancy is simply the addition of information beyond what is needed for standard system operation. This information can be a physical value or electric signal, hardware element or subsystem, an application or software module. The concept of redundancy is based on Murphy’s...

This paper proposes a new type of hash iterative structure ─ the ring-iterative structure with feedback which is subdivided into the single feedback ring iteration and the multiple feedback ring iteration, namely SFRI and MFRI. The authors prove that if f is a secure one-way compression function, the security of the MFRI structure is greater than that of the classical MD iterative structure, an...

Repetitive nonreentrant ventriculo-atrial synchrony (RNRVAS) is an arrhythmia which occurs in patients with dual-chamber devices and requires an intact ventriculo-atrial conduction. It can present with symptoms similar to those of pacemaker-mediated endless loop tachycardia and is an example of functional atrial undersensing and functional loss of atrial capture. In addition to loss of optimal ...

The case Tucson Woman's Clinic v. Eden (2004) established that some of Arizona's abortion [3] clinic laws violated physicians' and patients' rights to privacy, and it required Arizona's abortion [3] laws to be rewritten. The laws required most abortion [3] providers to be licensed with the Arizona Department of Health Services and to submit to all the regulations the Department established for ...

N early all in tobacco control today can only imagine the early days of television, when young sports fans watching their favourite team would be exposed to a steady stream of cigarette commercials featuring testimonials by top athletes. In the USA, overt cigarette advertisements have long since gone from the airwaves. Yet Formula One car racing, which reaches over 40 billion TV viewers each ye...