nodes


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nodes

The two points at which the orbital plane of a celestial body intersects a reference plane, usually the plane of the ecliptic or celestial equator. When the body, such as the Moon or a planet, crosses the reference plane from south to north it passes through the ascending node; crossing from north to south the body passes through its descending node. The line joining these two nodes is the line of nodes.

A celestial body might not cross the reference plane at the same points every time: the line of nodes then moves slowly forward or backward around the orbital plane, i.e. in the same or in the opposite direction to the body. This is termed progression or regression of the nodes. The Moon's nodes regress along its orbital plane, making one complete revolution in 18.61 years. This period is equal to the period of nutation.

References in periodicals archive ?
HD protocols such as RTS/CTS (Request-to-Send/Clear-to-Send) and CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) are currently used, but direct incorporation of un-modified versions of these protocols into IBFD wireless communication would face some problems: 1) The network nodes are unable to recognize the transmission mode of communication nodes and determine whether to contend the opportunity of asymmetric IBFD dual communication, which limits total network throughput.
Elimination of faulty nodes detected in detection phase (described in details in [15]);
Misbehaving nodes handled by various concept, one of the technique is Watchdog method [10][11][12], here each sender node monitored by the next nodes transmission.
The final set of standard nodes is the advanced nodes (Figure 5).
If the left node is the intermediate routing nodes or leaf routing nodes, a routing node and the neighbor leaves with child routing node, then the node from the need to find a replacement node.
Over the past few years, the sensor network research community has proposed a number of data gathering algorithms to effectively combine the data collected at these sensor nodes through a properly constructed communication topology and send only the aggregated data (that is a representative of the entire network) to the sink.
Jiang et al [8] propose the efficient route broadcast algorithm to restrict flooding in the light of Euclidean distance, it uses the fewer forwarding node to cover the more nodes in the network.
Factors that predicted cancer-specific survival included age younger than 40 years, white race, later year of diagnosis (2000-2005), squamous histology, small tumor size, stage IA2, and the number of lymph nodes removed.
2-4) Proponents of more recent theories regard them as epithelial inclusions within cervical lymph nodes that can trigger cystic degeneration.
Bilchik of the John Wayne Cancer Institute, Santa Monica, theorized that increasing the number of lymph nodes sampled--to at least 15--would improve survival.
In column K the intrinsic values of the option at the corresponding nodes are computed using Excel IF statements to determine whether the stock prices at those nodes exceed the option's exercise price.
The ability to provide a coherent cache among all nodes within a cluster is extremely difficult and supported by just a handful of storage systems today.