radius

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radius,

in anatomy: see armarm,
upper limb in humans. Three long bones form the framework of the arm: the humerus of the upper arm, and the radius (outer bone) and ulna (inner bone) of the forearm.
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radius

[′rād·ē·əs]
(anatomy)
The outer of the two bones of the human forearm or of the corresponding part in vertebrates other than fish.
(mathematics)
A line segment joining the center and a point of a circle or sphere.
The length of such a line segment.

radius

1. a straight line joining the centre of a circle or sphere to any point on the circumference or surface
2. the length of this line, usually denoted by the symbol r
3. the distance from the centre of a regular polygon to a vertex (long radius) or the perpendicular distance to a side (short radius)
4. Anatomy the outer and slightly shorter of the two bones of the human forearm, extending from the elbow to the wrist
5. a corresponding bone in other vertebrates
6. any of the veins of an insect's wing
7. a group of ray florets, occurring in such plants as the daisy
8. the lateral displacement of a cam or eccentric wheel

RADIUS

Remote Authentication Dial-In User Service

RADIUS

(Remote Authentication Dial-In User Service) An authentication, authorization and accounting (AAA) protocol developed by Livingston Enterprises (later acquired by Lucent). RADIUS uses a challenge/response method for authentication and has been widely used prior to Diameter. See Diameter, network access server and challenge/response.
References in periodicals archive ?
Curve radius is 931 m, permissible passenger train speed - 120 km/h, freight train speed - 90 km/h and actual superelevation - 60 mm.
The curves used to examine the impact of gauge width upon rail head side wearing were divided into five groups according to the curve radius R:
A main effect for curve radius was also obtained, F(2, 28) = 22.
In case of railway transport, this criterion has two marginal values: curve radius is acceptable and reconstructions are not necessary or are inadequate (i.
Curve radius and speed during curve negotiation affect required operational performance because both factors affect the required steering wheel angle.
the development of a model to predict the acceleration/deceleration rates depending on curve radius and sight distance.
Increase shoulder width and curve radius, provide sealed shoulder at curve, upgrade clear zone and delineation, install retro reflective pavement markers and resurface
The speed of the line would be of 350km/h with a minimum curve radius of 5500m and a maximum gradient of 1 in 200.
The actions described along with the optimization of the curve radius and camber values will increase the line speed of 80-100 km / h for conventional trains.