With the emergence of personal robots recently the need to create an easier form of human-robot interaction has become apparent. Emotions will play an important role in this interaction. In the proposed architecture emotions are generated from the evaluation of the wellbeing of the robot. Moreover, behavior selection mainly depends on a specific drive and emotions have a supervisory role. Propo...

The overmoded rf transmission and pulsed power compression system for SLAC's Next Linear Collider (NLC) program requires a high degree of transmission efficiency and mode purity to be economically feasible. To this end, a number of new, high power components and systems have been developed at X-band, which transmit rf power in the low loss, circular TE01 mode with negligible mode conversion. In...

The Basic Linear Algebra Subprograms, BLAS, are the basic computational kernels in most applications. BLAS 1 and BLAS 2, the vector-vector and matrix-vector routines, require memory accesses in the same order as computations and thus cannot achieve performance close to peak performance on modern computer architectures. BLAS 3 matrix-matrix operations on n× n-matrices on the other side can do or...

Electron linacs in the 100 MeV to 25 GeV energy range have by now been in operation for periods ranging from one year to over 20 years. In 1951 the Mark III accelerator at Stanford became the first electron linac to exceed an energy of 100 MeV. Since then significant increases in maximum electron energy have been made by the h'Iark III (reaching an energy of 1 GeV in 1960) and SLAC (exceeding 2...

The following tutorial paper describes how a block-structured mass storage device, such as a Winchester disk drive, may be made to function as part of a digital audio recording and editing system: the so-called 'tapeless recorder'. It outlines the principles of random access sound file storage and buffering, together with a discussion of digital audio requirements and the historical precedent f...

Optical Disk Drives are widely used today. However, even though the technology has been available to the consumer during 20 years, there are still performance issues to be improved. This study reveals a way of dealing with the photo diode signals in the optical pick-up to improve the performance of the Optical Disk Drives.

As solid state drives based on flash technology are becoming a staple for persistent data storage in data centers, it is important to understand their reliability characteristics. While there is a large body of work based on experiments with individual flash chips in a controlled lab environment under synthetic workloads, there is a dearth of information on their behavior in the field. This pap...

Previous studies have shown that many users do not use effective data deletion techniques upon sale or surrender of storage devices. A logical assumption is that many users are still confused concerning proper sanitization techniques of devices upon surrender. This paper strives to measure this assumption through a buyback study with a survey component. We recorded participants’ thoughts and be...

Gene drives have the potential to rapidly replace a harmful wild-type allele with a gene drive allele engineered to have desired functionalities. However, an accidental or premature release of a gene drive construct to the natural environment could damage an ecosystem irreversibly. Thus, it is important to understand the spatiotemporal consequences of the super-Mendelian population genetics bef...

SIR,-Further to the interesting leading article "Nutrition and Sleep" (20 May, p. 418) one may ask whether sleep is not the "natural" state and wakefulness merely a res,pite for the satisfaction of instinctual (and socially inculcated) drives. The hibernating animal is unlikely to chance upon dangerous predators. On this model the satisfqction of drives would lead to sleep and their continued f...