nodes


Also found in: Dictionary, Thesaurus, Medical, Acronyms.
Related to nodes: Lymph nodes

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 ?
Due to the constraints of the storage of sensor nodes, it is necessary to decrease the storage requirements during the designing of a protocol.
From (21), we can see that the storage requirements of each sensor node are not related to the number of nodes in the network, it is only related to the radius in hops of the network.
In experiments, the network consisting of 2000 nodes is deployed in a circular shape whose radius is 600 m, and the BS is at the position near the center.
The RTT method requires the nodes to add the clock synchronization modules.
In the algorithm optimization part, reference [26] and [27] use the average hop distance to detect attacked nodes. When the wormhole attack exists, the attacked beacon node will correct the hop count automatically.
The authors in [4] developed a modified version of Low Energy Adaptive Clustering Hierarchy (LEACH) algorithm to determine redundancy in a given region of interest, after random deployment of sensor nodes in WSN.
In [6], the authors proposed a new technique, which combines energy-efficient cluster head and router selecting protocol (EECRS) for the elimination of redundant sensor nodes. They [6] have considered sensor nodes with different radius (variable radius) for determination of duplicate nodes.
Bland, "The prognosis of T3N0 colon cancer is dependent on the number of lymph nodes examined," Annals of Surgical Oncology, vol.
Givel, "For patients with Dukes' B (TNM stage II) colorectal carcinoma, examination of six or fewer lymph nodes is related to poor prognosis," Cancer, vol.
Agent nodes perceive the change of the environment and get the maximum reward value and get an optimal strategy for corresponding decision actions.
The return value is the ratio of the residual energy of Agent nodes to the energy consumed by communication.