関連する実験動画
Updated: Jul 11, 2026

07:19
Fabrication of a Multiplexed Artificial Cellular MicroEnvironment Array
Published on: September 7, 2018
まとめ
日本は,米国の特許出願が急速に増加し,高い引用率を持つ技術大国となっています. しかし,その科学的成果は,控えめな成長と平均的な引用率のパフォーマンスを示し,科学よりも強力な技術的グローバルポジションを示しています.
科学分野:
- ビビロメトリクス (Bibliometrics) とは
- イノベーション研究 イノベーション研究
- 科学・技術政策 科学・技術政策
背景:
- 国家の競争力を評価するには,技術的成果と科学的成果の両方を評価する必要があります.
- 革新における日本の世界的な地位は,過去10年間で著しい変化を遂げました.
- 特許出願と出版の動態を理解することは,政策立案において極めて重要です.
研究 の 目的:
- 過去10年間における日本の技術的・科学的な地位の成長を描画する.
- 日本の特許出願と出版実績を他の主要国と比較するために.
- 特許と出版の指標に基づいて日本のイノベーションの景色を特徴づける.
主な方法:
- 日本の発明者に起因する米国の特許データの分析.
- 米国特許制度における特許引用頻度の評価.
- 日本の科学論文の出版出力および引用率の評価.
主要な成果:
- 日本の米国特許のシェアは,高い引用率で,年間1%増加しました.
- 1984年までに,日本の発明者は,イギリス,フランス,西ドイツの米国特許出力の合計を上回った.
- 日本の科学出版物は,年間0.5%成長し,平均的な引用パフォーマンスを示しました.
結論:
- 日本は,高度に革新的な技術を持つ技術大国として浮上しています.
- 日本の科学的な地位は拡大しているが,その技術的な強さよりも支配的ではない.
- この調査結果は,日本の技術的能力と科学的な影響力の違いを明らかにしている.
さらに関連する動画
関連する概念動画
Plant Breeding and Biotechnology
Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
Primary and Secondary Growth in Roots and Shoots
Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
Exponential Growth
Bacterial populations exhibit exponential growth when conditions such as nutrient availability and temperature are favorable. In this phase, cells reproduce through binary fission, where each cell divides into two identical daughter cells. This process causes the population to double at regular intervals, resulting in a growth rate that is directly proportional to the current number of cells. As the population increases, the number of new cells formed during each generation also grows, creating...
Plant Hormones
Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
Bacterial Growth Curve
The bacterial growth curve is a fundamental concept in microbiology that describes the dynamics of bacterial population growth in a closed system with controlled environmental conditions, such as temperature and nutrient availability. This curve is divided into four distinct phases: lag, log (exponential), stationary, and death phases, each reflecting a unique stage of bacterial adaptation and growth. During the lag phase, bacteria acclimate to their surroundings by synthesizing essential...
Introduction to Nuclear Reprogramming
Nuclear reprogramming is the process of switching gene expression of one cell type to that of another cell type, usually from a differentiated cell state to an undifferentiated cell state. Differentiation occurs during processes such as development and morphogenesis, tissue regeneration, and malignancy. Cells can also be artificially induced to reprogram their gene expression by techniques such as nuclear transfer, induced pluripotency, and cell fusion. Such techniques have many applications in...

