Antenna gain

The electromagnetic waves arrive at the directional antenna and are received more readily from one direction than from another. The antenna needs to be aligned with the direction of arrival.
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A technology that uses electromagnetic or electrostatic coupling in the radio frequency (RF) portion of the electromagnetic spectrum to identify a specific device. Each RFID tag includes a unique identifier, so that when a nearby antenna/transceiver actives the tag, it transmits that identifier back to the antenna where that value is recorded or used to trigger some kind of action. For example, most modern toll-road systems use RFID devices that drivers attach to the windshield of their car, and each time a device is “read” by an antenna, the vehicle owner’s toll balance is incremented by the cost of that transit. RFID devices may also be used to track individuals (carrying tags), equipment (bearing tags), and so forth, within the premises of an enterprise for security monitoring.
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Continually monitors received signal for interference. The antenna automatically adjusts its directional characteristics to reduce the interference. Also called adaptive antenna array.
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Caused by a signal feeding past a repeater (or receive antenna) to the receiving antenna at the next station in the route.
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<p>NIST Cloud Computing Security Reference Architecture</p><p>The purpose of this document is to define a NIST Cloud Computing Security Reference Architecture (NCC-SRA)--a framework that: <br>1. Identifies a core set of Security Components that can be implemented in a Cloud Ecosystem to secure the environment, the operations, and the data migrated to the cloud; <br>2. Provides, for each Cloud Actor, the core set of Security Components that fall under their responsibilities depending on the deployment and service models; <br>3. Defines a security-centric formal architectural model that adds a security layer to the current NIST SP 500-292, "NIST Cloud Computing Reference Architecture"; and <br>4. Provides several approaches for analyzing the collected and aggregated data.</p>
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