Lambda Rail
National LambdaRail is advancing the research, clinical, and educational goals of members and other institutions by establishing and maintaining a unique nationwide network infrastructure that is owned and controlled by the U.S. research community. Ownership of the underlying optical infrastructure ensures the research community unprecedented control and flexibility in meeting the requirements of the most advanced network applications and providing the resources demanded by cutting-edge network research. NLR aims to:
- support experimental and production networks,
- foster networking research,
- promote next-generation applications, and
- facilitate interconnectivity among high-performance research and education networks
NLR has acquired enabling technologies for its nationwide fiber optic infrastructure from Cisco Systems, which has provided optical DWDM multiplexers, Ethernet switches, and IP routers.
National LambdaRail will let people in the academic community experiment with network protocols and the basic network infrastructure in a way they haven't since the ARPAnet
-- Scot Colburn, network engineer National Center for Atmospheric Research
Ogive
In ballistics or aerodynamics, an ogive is a pointed, curved surface used to form the approximately streamlined nose of a bullet, shell, missile or aircraft.
The traditional or secant ogive is a surface of revolution of the same curve that forms a Gothic arch; that is, a circular arc, of greater radius than the cylindrical section ("shank"), is drawn from the edge of the shank until it intercepts the axis.
If this arc is drawn so that it meets the shank at zero angle (that is, the distance of the centre of the arc from the axis, plus the radius of the shank, equals the radius of the arc), then it is called a tangential or spitzer ogive. This is a very common ogive for high velocity (supersonic) rifle bullets.
Short Tick Rule
The SEC has voted to remove the “short sale tick test”, Rule 17 CFR 240.10a-1 for all equity securities. Effective Friday, July 6, traders will be able to short all securities on an up, down, or zero tick.
The following resource links provide more information on Rule 17 CFR 240.10a-1 and the SEC’s proposal to remove the rule.
Speech by SEC Chairman: Opening Statement on Eliminating the Short Sale ‘Tick Test’
SEC Votes on Regulation SHO Amendments and Proposals; Also Votes to Eliminate “Tick” Test
