We use the Itô stochastic calculus to give a simple derivation of the Lindblad form for the generator of a completely positive density matrix evolution, by specialization from the corresponding global form for a completely positive map. As a by-product, we obtain a generalized generator for a completely positive stochastic density matrix evolution.

London, June 18th, 1867. Tiie Medical Parliament, after a session of ten days' duration, has at last come to a close. The proceedings of the Medical Council this year have been as wordy, but not as improgressive as those of 18GG. The Drs. Wood and Sir Dominic Corrigan have been as noisy and controversial as ever, the latter indulging his oratorical shilelagh as freely as usual; but for all that...

In this paper, the authors maintain that the prevalence of technical analysis in professional investment argues that such techniques should perhaps be taken more seriously by academics. They use the new technique of genetic programming to investigate a long time series of price data for a quoted property investment company, to discern whether there are any patterns in the data which could be us...

In response to a comment on their previous note about the Voigt line profile, here the authors clarify relevant statements and numeric algorithms in the original note. In Huang and Yung (2004, hereafter HY04) we described a mistake commonly found in several textbooks regarding the Voigt line profile. Five years after the original note was published, Schreier (2009; see also the associated corri...

candidates, and the first offers himself to the electors of Marylebone, and the other is likely to be returned for Dublin. The claims of the two are of a very high order, though differing very materially from each other. Dr. Sandwith is a practical man, earnest in speech, energetic in action, anxious for reform in medical institutions, but not desirous of any very sweeping or radical alteration...

CURRENT SCIENCE, VOL. 104, NO. 4, 25 FEBRUARY 2013 426 is, thus, simultaneous with or occurs immediately before anthesis (Figure 1 c– f ). (ii) In some flowers opening initiates by the expansion of the apices of the tepals, the stimulus of which then spreads laterally (Figure 1 a and b). However, what is interesting to note is that the anthers are still in an undehisced state. It takes more tha...

news from the capital of the Green Island, in hopes of its proving of interest to many of your readers. No fitter opportunity for commencing the practice could be found than the present, when the great event of the year, quoad the Irish College of Surgeons, has just taken place. On Monday last (June 7th), being the day appointed in the charter, the election of office-bearers for the enusing yea...

[from our own correspondent.] London, September 18th, 1866. The cholera epidemic appears to be disappearing from London ; the last returns give 28 deaths per diem only. This result is probably in a great measure attributable to the prompt measures of house-to-house visitation and relief adopted by the various East-end parishes where the disease has been most fatal. Supplementary hospitals have ...

and hydrocyanic acid with a view to discover some means cf relieving the pain of tinnitus atirium. For years this subject had received Mr. Toynbee's attention, but his previous experiment had failed to produce the desired result. Lately it struck him that by partially inhaling some anaesthetic, and the mouth and nostrils being closed by forcing it through the Eustachian tubes, the unpleasant se...

I would like to thank the following members of the editorial board who are rotating off the board for their service for the past several years: Heinrich Audebert, Antoni Dávalos, Agnes Flöel, Mikael Mazighi, Majaz Moonis, Patrik Michel, and J Mocco. I would also like to thank Scott Silverman for his contribution to the Illustrative Teaching Cases and Amytis Towfighi for her assistance with the ...