搜索结果: 1-10 共查到“the evidence”相关记录10条 . 查询时间(0.168 秒)
LHC experiments see first evidence of a rare Higgs boson decay（图）
大型强子对撞机 希格斯玻色子 衰变证据
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2023/5/29
The discovery of the Higgs boson at CERN’s Large Hadron Collider (LHC) in 2012 marked a significant milestone in particle physics. Since then, the ATLAS and CMS collaborations have been diligently inv...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：A Contracting Approach to the Divisions of the Gains in Global Supply Chains: Theory and Evidence
全球供应链 收益划分 收缩方法
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2023/4/17
This paper develops a theory to illustrate the relationship between the profitability of firms producing along the value chain and the sequential production stages. Using a bilateral monopoly framewor...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Trust and Contracts: Empirical Evidence
信托与合同 经验证据 决策论
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2023/4/19
Trust between parties should drive contract design: if parties were suspicious about each others' reaction to unplanned events, they might agree to pay higher costs of negotiation ex ante to complete ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：The impact of COVID-19 on hotel customer satisfaction: Evidence from Beijing and Shanghai in China
新冠肺炎 酒店顾客 满意度 影响
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2023/5/10
The purpose of this study is to provide better service to hotel customers during the COVID-19 era. Specifically, this study focuses on understanding the changes in hotel customer satisfaction during t...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：International trade and Covid-19: City-level evidence from China's lockdown policy
国际贸易 新冠肺炎 中国封锁政策 城市证据
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2023/5/16
We examines the impact of Covid-19 lockdowns on exports by Chinese cities. We use city-level export data at a monthly frequency from January 2018 through April 2020. Differences-in-differences estimat...
Physicists find direct evidence of strong electron correlation in a 2D material for the first time（图）
二维材料 强电子 相关性 非常规超导性
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2023/6/7
In recent years, physicists have discovered materials that are able to switch their electrical character from a metal to an insulator, and even to a superconductor, which is a material in a friction-f...
Ghostly ring provides strong evidence for dark matter（图）
dark matter galaxy clusters
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2007/5/21
16 May 2007，A ring-shaped distribution of mass in a galaxy cluster five billion light-years from Earth is the strongest evidence yet for the existence of dark matter. This is the claim of physicists f...
Scripps/UCSD Geophysicist Among International Team Finding Evidence of First Plate Tectonics 3.8 Billion Years Ago（图）
plate tectonics
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2007/3/26
March 22, 2007，Identification of the oldest preserved pieces of Earth's crust in southern Greenland has provided evidence of active plate tectonics as early as 3.8 billion years ago, according to a re...
New Evidence of Water on Mars（图）
Water Mars
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2007/3/7
March 2, 2007，NASA has released new detailed images that provide further evidence that water once flowed beneath the martian surface. Photos taken by Mars Reconnaissance Orbiter of Candor Chasma, one ...
Researchers produce new evidence in Libya death penalty case
death penalty case HIV
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2006/12/15
7 December，New molecular evidence sheds significant doubt on the charges against six medical workers who are facing the death penalty in Libya. They are charged with deliberately contaminating more th...