The paper studies the patterns of volatility in firm-specific growth rates and stock prices during the early phase of the life-cycle of an old economy industry, the US automobile industry from 1900-1930, and a new economy industry, the US PC industry from 1974-2000. Strikingly similar patterns of volatility are discovered in the early phases of the two industries. The comparison sheds light on ...

STUDIO-BASED LEARNING Studio-based learning has its origins in architectural design education and has been informed by a number of historic educational approaches. These include the Quincy system dating from the late 1800's, John Dewey’s work with the development of the Laboratory School in Chicago during the late 1800's, and the platoon system developed by William Wirt at the Horace Mann High ...

There are few empirical data, particularly collected simultaneously from multiple sites, on extinctions resulting from human-driven land-use change. Southeast Asia has the highest deforestation rate in the world, but the resulting losses of biological diversity remain poorly documented. Between November 2006 and March 2008, we conducted bird surveys on six landbridge islands in Malaysia and Ind...

(1) Department of Virology, Faculty of Veterinary Sciences, National University of La Plata, 60 & 118, CC296, 1900 La Plata, Buenos Aires, Argentina (2) CICV-INTA, CC77, 1708 Morón, Buenos Aires, Argentina (3) National Research Council (CONICET), Av. Rivadavia 1917, C1033 AAJ, Buenos Aires, Argentina (4) Professional Assistant of the Scientific Research Commission (CIC), 10 & 526, 1900 La Plata...

O. Martı́nez Matos, G. A. Torchia, G. M. Bilmes, and J. O. Tocho Centro de Investigaciones Ópticas-CIOp(CONICET CIC), CC 124, 1900 La Plata, Argentina Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 47 y 115, 1900 La Plata, Argentina Facultad de Ingenierı́a, Universidad Nacional de La Plata, 1 y 47, 1900 La Plata, Argentina ~Received 27 June 2003; revised manuscript received 13 Fe...

Beginnings Bachelier (1900) was the earliest to correctly model Brownian motion mathematically. In 1900, he defended his thesis Théorie de la Spéculation about the use of Brownian motion in pricing stock options. He was truly before his time. In particular, he made the connection between random walk and Brownian motion in continuous time. The random walk has of course been a topic of intense in...

Joseph Needham [4] was an embryologist and biochemist who is most noted in science for his studies on induction [5] in developing embryos. Needham worked with Conrad Hal Waddington [6] to attempt to identify the compound responsible for the organizer?s activity. Although he was not successful in discovering the chemical, he and Waddington learned much about the organizer [7]. Needham was a meti...

In 1920, F.A. entered Harvard Medical School, and graduated in 1924. He then worked as an intern at the Massachusetts General Hospital (M.G.H.) in the Department of Dr. J. Aub and W. Bauer where he was initiated into the field of the parathyroid glands and calcium metabolism. In 1927 and 1928, at Johns Hopkins Hospital in Baltimore, Albright together with Dr. R. Ellsworth studied and published ...

Viktor Hamburger [5] was an embryologist who focused on neural development [6]. His scientific career stretched from the early 1920s as a student of Hans Spemann [7] to the late 1980s at Washington University [8] resolving the role of nerve growth factor [9] in the life of neurons. Hamburger is noted for his systematic approach to science and a strict attention to detail. Throughout his life he...