A zero-knowledge interactive proof is a protocol by which Alice can convince a polynomially-bounded Bob of the truth of some theorem without giving him any hint as to how the proof might proceed. Under cryptographic assumptions, we give a general technique for achieving this goal for every problem in NP. This extends to a presumably larger class, which combines the powers of non-determinism and...

The objective of this Letter is to characterise the electromagnetic wave propagation between adjacent rooms in lower deck areas of ships. A wideband MIMO (Multiple-Input Multiple-Output) channel sounder has been used to realize double directional propagation measurements at 2.2 GHz. The antenna configuration was a linear array at the transmission side and a rectangular one at the reception. The...

This paper describes the design of a fuzzy controlled autonomous robot, incorporating Genetic Algorithms (GA) based rule learning, for use in an outdoor agricultural environment for path and edge following processes which involves spraying insecticide, distributing fertilisers, ploughing, harvesting, etc. The robot has to navigate under different ground and weather conditions. This results in c...

OBJECTIVES The purpose of this study was to analyze recent trends in door-to-reperfusion time and to identify hospital characteristics associated with improved performance. BACKGROUND Rapid reperfusion improves survival for patients with acute ST-segment elevation myocardial infarction (STEMI). METHODS In this retrospective observational study from the National Registry of Myocardial Infarc...

AIM. To study social, demographic, clinical, and forensic profiles of frequently re-hospitalized (revolving-door) psychiatric patients. METHODS. The study included all patients (n=183) who were admitted to our hospital 3 or more times during a 2-year period from 1999 through 2000. We compared these patients to 2 control groups of patients who were admitted to our hospital in the same period. Fo...

Face recognition system have been widely developed. The machine vision system becomes an interest of many researchers in various fields of science. It provides the most important characteristic of natural interaction that is personalization. Automatic face recognition is a challenging problem, since human faces have a complex pattern. This paper presents a method for recognition of frontal huma...

Background: In patients with ST-segment elevation myocardial infarction (STEMI), Primary percutaneous coronary intervention (PCI) is the preferred reperfusion therapy. Timely primary PCI is essential in improving the clinical outcomes of these patients. The aim of this study was to evaluate the factors affecting balloon delay in STEMI treated patients by primary PCI and its relationship with ma...

This paper studies whether trading in social networks allocates a new technology efficiently. I use a field experiment in Odisha India to compare decentralized trade of a new technology through networks with an approach where demand was revealed via door-to-door sales. While 84% of farmers are expected to gain from the technology, only 7% adopt in networks. Conversely, 40% of farmers adopt when...

We demonstrate the mixing of rotational states in the ground electronic state using microwave radiation to enhance optical cycling in the molecule yttrium (II) monoxide (YO). This mixing technique is used in conjunction with a frequency modulated and chirped continuous wave laser to slow longitudinally a cryogenic buffer-gas beam of YO. We generate a flux of YO below 10 m/s, directly loadable i...