In the demonstration, 360∘ of rotation (one full rotation) represents a sidereal day. you can actually measure the length of the sidereal day by measuring the time from when crosses your meridian on one day (or night) until it crosses the meridian on the next day (or night). mastering astronomy

In order to be thoughtful about the implementation of security policies and controls, leaders must balance the need to with the impact to the business operations. doing so could mean phasing security controls in over time or be as simple as aligning security implementation with the business’s training events.

Email viruses are typically launched by people who modify header information to hide their identity. brightmail's enrique salem says that in the future, your email reader will authenticate the sender before putting hte message in your inbox. that way, you will know the source of all the emails you read. alan nugent of novell says, "i'm kind of a fan of eliminating anonymity if that is the price for security." will eliminating anonymity make computers more secure?

Minneapolis federal reserve bank economist edward prescott estimates the elasticity of the u.s. labor supply to be 3. given this elasticity, what would be the impact of funding the social security program with tax increases on the number of hours worked and on the amount of taxes collected to fund social security?