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関連する概念動画

Scalar Product (Dot Product)01:11

Scalar Product (Dot Product)

27.8K
The scalar multiplication of two vectors is known as the scalar or dot product. As the name indicates, the scalar product of two vectors results in a number, that is, a scalar quantity. Scalar products are used to define work and energy relations. For example, the work that a force (a vector) performs on an object while causing its displacement (a vector) is defined as a scalar product of the force vector with the displacement vector.
The scalar product of two vectors is obtained by multiplying...
27.8K
Vector Product (Cross Product)01:17

Vector Product (Cross Product)

28.1K
Vector multiplication of two vectors yields a vector product, with the magnitude equal to the product of the individual vectors multiplied by the sine of the angle between both the vectors and the direction perpendicular to both the individual vectors. As there are always two directions perpendicular to a given plane, one on each side, the direction of the vector product is governed by the right-hand thumb rule.
Consider the cross product of two vectors. Imagine rotating the first vector about...
28.1K
Primary Production01:06

Primary Production

25.5K
The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
25.5K
Production Efficiency01:01

Production Efficiency

18.5K
Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).
18.5K
The Dot Product01:26

The Dot Product

266
Measuring how one directional quantity affects another along a specific path involves comparing their orientation and strength. When two such quantities are represented using direction and amount, a numerical result is computed to show how much one acts along the path of the other. This result comes from a rule combining both inputs' horizontal and vertical parts and adding the results.This calculation gives a single value that grows larger when both inputs point in similar directions and...
266
Dot Product01:29

Dot Product

1.0K
The dot product is an essential concept in mathematics and physics.
In engineering, the dot product of any two vectors is the product of the magnitudes of the vectors and the cosine of the angle between them. It is denoted by a dot symbol between the two vectors.
Consider a vehicle pulling an object along the ground using a rope. If the rope makes an angle with the horizontal axis, the work done can be calculated using the dot product of the force applied and the object's displacement.
The dot...
1.0K

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The Barnacle Balanus improvisus as a Marine Model - Culturing and Gene Expression
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The Barnacle Balanus improvisus as a Marine Model - Culturing and Gene Expression

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海洋の生産性は低下するのでしょうか?

Charlotte Laufkötter1,2, Nicolas Gruber3

  • 1Climate and Environmental Physics, Physics Institute, University of Bern, 3012 Bern, Switzerland. laufkoetter@climate.unibe.ch.

Science (New York, N.Y.)
|March 29, 2018
PubMed
まとめ

No abstract available in PubMed .

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Analyzing Gene Expression from Marine Microbial Communities using Environmental Transcriptomics
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Identification of Novel Genes Associated with Alginate Production in Pseudomonas aeruginosa Using Mini-himar1 Mariner Transposon-mediated Mutagenesis

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