E WASTE- TOXIC TIME BOMB

E-learning: Just a Waste of Time

Many people claim that e-learning is a waste of time. High dropout rates from e-learning courses, low learner satisfaction, ambiguous performance, seem to justify their opinion. But to the other extreme knowledge is recognized as a critical resource (Nonaka and Takeuchi 1995), (Wiig 1993), (Hahn and Subramani 2000), time and place limitations are abolished through e-learning technologies. So th...

Transparency and Toxic Waste: State Decisions to Report and Import Toxic Waste

Dawn of the E-Bomb - Spectrum, IEEE

IE E E S P E C T R U M • N o ve m be r 20 03 n these media-fueled times, when war is a television spectacle and wiping out large numbers of civilians is generally frowned upon, the perfect weapon would literally stop an enemy in his tracks, yet harm neither hide nor hair. Such a weapon might shut down telecommunications networks, disrupt power supplies, and fry an adversary’s countless computer...

A Time Bomb for Leukemia

Alterations of the circadian clock have been linked to cancer development. Puram et al. (in this issue) now uncover differential requirements between healthy hematopoietic and diseased leukemic stem cells for core circadian transcription factors, wherein leukemic cells depend on the clock machinery for survival and growth.

Toxic waste disposal in Escherichia coli.

About 10% of the nalidixic acid-resistant (Nal(r)) mutants in a transposition-induced library exhibited a growth factor requirement as the result of cysH, icdA, metE, or purB mutation. Resistance in all of these mutants required a functional AcrAB-TolC efflux pump, but the EmrAB-TolC pump played no obvious role. Transcription of acrAB was increased in each type of Nal(r) mutant. In the icdA and...