whom you ask—is the next generation of optical disc storage technology. It's essentially a bigger, faster compact disc that can hold video as well as audio and computer data. DVD aims to encompass home entertainment, computers, and business information with a single digital format, eventually replacing audio CD, videotape, laser disc, CD-ROM, and perhaps even video game cartridges. DVD has wide...

ABSTRACT We study the radiatively driven fluid jets around a non-rotating black hole. The radiation arising from inner compact corona and outer sub-Keplerian part of disc accelerates jets. obtain steady state, semi-analytical, outflow solutions. thermodynamics is described by variable adiabatic index equation state. develop total variation diminishing (TVD) routine to investigate time dependent...

Abstract Automotive brakes have come a long way, from drum being widely used for time until disc came along and began slowly wiping out the usage of brakes. This is primarily due to number advantages that disc-pad setup brings - better stopping distance one most important aspects any braking system. Apart this, key over include heat dissipation, fade resistance, self-adjusting ability, compact ...

We present time-resolved spectrophotometry of GK Per taken on the rise to outburst maximum, in which we detect 5000 s QPOs in the optical emission lines. We use this opportunity to provide a kinematically-resolved analysis of the phenomenon. Observations are consistent with reprocessing oo blobs of gas orbiting within the inner accretion disc, and evidence is found for the migration of the QPO ...

September 1999 7 medicamundi Digital electronics is certainly a technology that has had an enormous impact on our modern way of life. This is demonstrated every day in many instruments that we use. For instance, it is obviously reflected in what gives us dependable and accurate time measurement (digital clocks), undistorted music (compact disc), control of car engine power (electronic fuel inje...

We report photoacid-induced nonerasable recording in tert-butoxycarbonyl-protected quinizarin methacrylate polymers for three-dimensional optical memory. 1m/s-speed recording was achieved using an 800 nm femtosecond laser at an 80MHzrepetition rate, without a postexposure bake after laser irradiation. Three-layer recording indicates that no optical damage during recording enables modulation of ...

We prove that for certain families of semi-algebraic convex bodies in R3, the convex hull of n disjoint bodies has O(nλs(n)) features, where s is a constant depending on the family: λs(n) is the maximum length of order-s Davenport-Schinzel sequences with n letters. The argument is based on an apparently new idea of ‘compact families’ of convex bodies or discs, and of ‘crossing content’ and ‘foo...

It is shown that every unimodal map is realized as a restriction of a simple map defined on the unit disc to a part of its boundary. Our two-dimensional map is called a full-folding map, which is defined generally on a compact metric space. It is a generalization of the full tent map in that it has two homeomorphic inverse maps and thus every non-critical point has two inverse images.

Abstract We use Lerman’s contact cut construction to find a sufficient condition for Hamiltonian diffeomorphisms of compact surfaces embed into closed $3$ -manifold as Poincaré return maps on global surface section Reeb flow. In particular, we show that the irrational pseudorotations $2$ -disc constructed by Fayad and Katok flow dynamically convex form -sphere.