In general terms key sectors analysis aims at identifying the role, or impact, that the existence of a productive sector has in the economy. Quite a few measures, indicators and methodologies of varied complexity have been proposed in the literature, from multiplier sums to extraction methods, but not without debate about their properties and their information content. All of them, to our knowl...

A pervasive criticism of hypertext systems is that users tend to lose their way. Although much work has been done to address this "lost in hyperspace" problem, it still remains unresolved, even accepted as an inevtaible feature. But using the "lost in hyperspace" problem as an example of usability problems, we argue usabilityproblems are not user problems. Once viewed like this, more appropriat...

Assuming the observed pulsar velocities to originate during asymmetric collapse of stellar cores, we compute the amplitude of gravitational waves emitted during type II and Ib supernova explosions and their detection rate from within a distance of 30 Mpc. At the rms-level of advanced laser interferometers h ≈ 10−22 at frequencies 300− 1000 Hz the expected rate is about 1 per year.

We calculate the cross section of the inverse beta decay process, νe + n → p + e, in a magnetic field which is much smaller than m2p/e. Using exact solutions of the Dirac equation in a constant magnetic field, we find that the cross section depends on the direction of the incident neutrino even when the initial neutron is assumed to be at rest. We discuss the implication of this result for puls...

Being disorientated or lost is one of the fundamental dif®culties which users experience when trying to navigate within hypertext systems. In this paper, two new metrics of lostness are described and applied. The new metrics focus on the effects of link-type and the accuracy of user's mental models of system structure. In a series of studies, the new metrics were compared with the only other pu...

We have investigated the influences of ventilation and cardiac output on uptake of anaesthetic with different breathing systems, by analysis of simple equations and by computer simulation. Increases in cardiac output and ventilation increased uptake from those systems which provided a constant inspired concentration, but not from completely closed systems with the vaporizer out of the circle (V...

andre makine, a writer of russian ancestry residing in france, propounds the west enthusiastically and lyrically in his early novels. he visualizes the west as a lost paradise which is both fascinating and fanciful contrary to his childhood vision of russia. however, as time passes, following his immigration to france, his encounter with reality shatters and ruins the rudimental idealism which ...

sorts. Still more important and hopeful is the tendency through freer methods to give children an opportunity of pursuing their daily activities of work and play in such a way as to allow them unconsciously to find and maintain their own rhythm, physical, emotional, and intellectual. The various experiments in the schools of to-day, where a " free time-table " within the bounds of law and order...

Results: A total of 5321 laboratory requests comprising 4506 malaria parasites (MP), 414 urine microscopy, culture and sensitivity (urine m/c/s), and 410 blood culture were made, processed and reports generated. Of these, 1040 (19.6%) were not collected or delivered to the requesting physician. Urine m/c/s with 37.9% (157/414) accounted for the highest test-specific non-collected reports, close...