Assessing Your Vendors' Viability

Assessing your board's risk tolerance.

Assessing the Viability of Online Interruption Studies

Researchers have been collecting data online since the early days of the Internet and as technology improves, increasing numbers of traditional experiments are being run online. However, there are still questions about the kinds of experiments that work online, particularly over experiments with time-sensitive performance measures. We are interested in one time-sensitive measure specifically, t...

Strategic price setting: ensuring your financial viability through price modeling.

You Are Your Photographs: Detecting Multiple Identities of Vendors in the Darknet Marketplaces

Darknet markets are online services behind Tor where cybercriminals trade illegal goods and stolen datasets. In recent years, security analysts and law enforcement start to investigate the darknet markets to study the cybercriminal networks and predict future incidents. However, vendors in these markets often create multiple accounts (i.e., Sybils), making it challenging to infer the relationsh...

Assessing tissue viability with MR diffusion and perfusion imaging.

BACKGROUND AND PURPOSE Diffusion- (DW) and perfusion-weighted (PW) MR imaging reflect neurophysiologic changes during stroke evolution. We sought to determine parameters that distinguish regions of brain destined for infarction from those that will survive despite hypoperfusion. METHODS DW and PW images were obtained in 30 patients at 1-12 hours after symptom onset. Relative cerebral blood vo...