Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Energy Budgets and Reproductive Strategies00:51

Energy Budgets and Reproductive Strategies

Organisms must balance energy intake with the energy required for growth, maintenance, and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species reproduce only once in their lifetime, often investing most available resources into that single reproductive event. Iteroparous species, by contrast, reproduce multiple times over their lifetimes, typically allocating fewer resources to any single...
Energy00:58

Energy

The universe is composed of matter in different forms, and all forms of matter contain energy.  The different forms of energy on Earth originate from the Sun—the ultimate energy source. For instance, plants capture light energy from the Sun, and through the process of photosynthesis, convert it into chemical energy. This stored energy from plants can be harnessed in many ways. For example, eating plant products as food provides energy for our body to function, and burning wood or coal...
Work-energy Theorem01:41

Work-energy Theorem

According to Newton’s second law of motion, the sum of all the forces acting on a particle (net force) determines the rate of change in the momentum of the particle (motion). Therefore, we should consider the work done by all forces acting on a particle, or the net work, to see its effect on the particle’s motion.
The work-energy theorem equates work done by all the forces on an object to the change in its kinetic energy. The theorem can be used to calculate work done by a force when...
Energy Diagrams - I01:14

Energy Diagrams - I

The dynamics of a mechanical system can be easily understood by interpreting a potential energy diagram. Since energy is a scalar quantity, the interpretation of the dynamics of the system becomes even simpler.
Take the example of a skater on a parabolic ramp. The potential energy at different points along the ramp will be proportional to the height of the ramp, which varies quadratically with the horizontal position on the ramp. As the skater moves down the ramp from the highest position,...
Energy Diagrams - II01:10

Energy Diagrams - II

Energy diagrams are important to understand the dynamics of a system. The topology of an energy diagram helps illustrate the equilibrium points of the system.
The point in the energy diagram at which the system’s potential energy is the lowest is known as the local minima. The system tends to stay in this position indefinitely unless acted upon by a net force. The slope of the potential energy diagram at the local minima is zero, indicating that zero net force is acting on the system. The slope...
Potential-Energy Criterion for Equilibrium01:16

Potential-Energy Criterion for Equilibrium

Potential energy or potential function plays an essential role in determining the stability of a mechanical system. If a system is subjected to both gravitational and elastic forces, the potential function of the system can be expressed as the algebraic sum of gravitational and elastic potential energy. If the system is in equilibrium and is displaced by a small amount, then the work done on the system equals the negative of the change in the system's potential energy from the initial to the...

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Environment and Development. Get the science right when paying for nature's services.

Science (New York, N.Y.)·2015
Same author

Clinical significance of small airway obstruction markers in patients with asthma.

Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology·2013
Same author

Assessing ecosystem health.

Trends in ecology & evolution·2011
Same author

Global mapping of ecosystem services and conservation priorities.

Proceedings of the National Academy of Sciences of the United States of America·2008
Same author

Environment. Can we defy nature's end?

Science (New York, N.Y.)·2001
Same author

Economic growth, carrying capacity, and the environment.

Science (New York, N.Y.)·1995

関連する実験動画

Updated: Jul 11, 2026

Determining the Contribution of the Energy Systems During Exercise
11:15

Determining the Contribution of the Energy Systems During Exercise

Published on: March 20, 2012

具体的エネルギーと経済的な評価

R Costanza

    Science (New York, N.Y.)
    |December 12, 1980
    PubMed
    まとめ

    この研究では,労働と政府サービスのためのエネルギーを含め,体現されたエネルギー計算を再評価します. これらの要素を含めると,製品の体現されたエネルギーと米国の経済におけるドル価値との強い関連が明らかになる.

    科学分野:

    • 環境経済学 環境経済学
    • エネルギー分析 エネルギー分析
    • インプット・アウトプット経済学

    背景:

    • 具体化されたエネルギーは,商品やサービスを生産するエネルギー総量を定量化します.
    • 伝統的な計算では,労働力や政府サービスのエネルギー投入はしばしば除外されます.
    • この排除は,独立した経済的生産因子 (土地,労働,資本) の仮定から生じる.

    研究 の 目的:

    • 労働と政府サービスのためのエネルギーを,体内エネルギー計算に含めることによる影響を調査する.
    • これまでに省略されたこれらのエネルギー投入を含めると,体現されたエネルギーと経済的価値の関係が強化されるかどうかを判断する.

    主な方法:

    • 労働と政府サービスのエネルギー要求を組み込むために,インプット・アウトプットの分析を適応させた.
    • 改訂された方法論を用いて,92部門の米国経済における体内エネルギーの計算.

    主要な成果:

    • 労働と政府サービスのためのエネルギーを含めると,体現されたエネルギー計算に大きく影響します.
    • これらの要因も含めると,体現されたエネルギーとドル価値の間の強い相関が観察されました.
    • 経済的な生産要因の相互依存,特にエネルギーの役割が強調されています.

    さらに関連する動画

    Virtual Hand with Ambiguous Movement between the Self and Other Origin: Sense of Ownership and 'Other-Produced' Agency
    08:01

    Virtual Hand with Ambiguous Movement between the Self and Other Origin: Sense of Ownership and 'Other-Produced' Agency

    Published on: October 28, 2020

    Producing, Characterizing and Quantifying Biochar in the Woods Using Portable Flame Cap Kilns
    07:27

    Producing, Characterizing and Quantifying Biochar in the Woods Using Portable Flame Cap Kilns

    Published on: January 5, 2024

    関連する実験動画

    Last Updated: Jul 11, 2026

    Determining the Contribution of the Energy Systems During Exercise
    11:15

    Determining the Contribution of the Energy Systems During Exercise

    Published on: March 20, 2012

    Virtual Hand with Ambiguous Movement between the Self and Other Origin: Sense of Ownership and 'Other-Produced' Agency
    08:01

    Virtual Hand with Ambiguous Movement between the Self and Other Origin: Sense of Ownership and 'Other-Produced' Agency

    Published on: October 28, 2020

    Producing, Characterizing and Quantifying Biochar in the Woods Using Portable Flame Cap Kilns
    07:27

    Producing, Characterizing and Quantifying Biochar in the Woods Using Portable Flame Cap Kilns

    Published on: January 5, 2024

    結論:

    • 標準的な組み込みエネルギー評価では,労働力や政府サービスのエネルギーを省略することによって,総エネルギー消費量を過小評価することがあります.
    • 経済的な生産因子は独立していないので,エネルギーはその創造に不可欠です.
    • 改訂された組み込みエネルギー計算は,経済的価値とエネルギー強度のより正確な表現を提供します.