We present two methodologies that adapt the event study from research in finance and economics to study the impact of enforcement on information security attacks. One uses linear regression with the number of attacks as the dependent variable and indicators of enforcement events as independent variables. The other measures the impact of enforcement by the… (More)
Attackers base themselves in countries of convenience, virtually.
The ethyl acetate soluble fraction from the roots of Sanguisorba tenuifolia was found to have a hypoglucemic effect in alloxan-induced diabetic rats. Two new triterpenoids, identified as 2-oxo-3β,19α-dihydroxyolean-12-en-28-oic acid β-D-gluco-pyranosyl ester (1) and 2α,19α-dihydroxy-3-oxo-12-ursen-28-oic acid β-D-glucopyranosyl ester (4) were isolated from… (More)
Detection of genogroup II (GII) norovirus (NoV) RNA from adult pigs in Japan and Europe and GII NoV antibodies in US swine raises public health concerns about zoonotic transmission of porcine NoVs to humans, although no NoVs have been detected in US swine. To detect porcine NoVs and to investigate their genetic diversity and relatedness to human NoVs, 275… (More)
We analyze the strategic interactions among end-users and between end-users and a hacker. We show that security efforts by end users are strategic substitutes. This explains the inertia among end-users in taking precautions even in the face of grave potential consequences. Next, we analyze the direct and indirect effects of changes in user fixing cost and… (More)
QIu‑Hong Wang is an assistant Professor in the School of Management and Huazhong university of Science and Technology. She received her Ph.D. in information systems from the National university of Singapore in 2007. Her research focuses on pricing, the economics of information security, the economics of intellectual property, and virtual economy. abstract:… (More)
At various dates between 1991-2002, nineteen OECD countries extended the term of copyright, typically from the author's life plus 50 years to author's life plus 70 years. We study the impact of the extensions on the production of movies. We find that the extensions were associated with an increase in movie production ranging between 8.51% (±4.60%) and 10.4%… (More)
Chemical investigation of the 50% ethanol eluate fraction from a macroporous resin of flowers of Datura metel L. collected in the Jiangsu Province of China resulted in the isolation of two new withanolides, baimantuoluoline G (1) and baimantuoluoside H (2). Their structures were elucidated as… (More)