Results 21 to 30 of about 497,447 (299)
四川大学学报. 自然科学版, 1990 主要研究空间X上的Γ（X）对策（即Ⅰ和Ⅱ皆选有限子集）与Cp（X）之间的关系.Dan Ma证明了:Cp（X）是Eaire的必要条件是,对Γ（X）对策,Ⅰ没有必胜策略,本文主要证明该条件不是充分的.
王凤琼
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Soil organic nitrogen (SON) transformation is critical for global nutrient cycling and ecosystem productivity, yet how its responsiveness to climate change differs across diverse land use types remains poorly resolved.
Xinyi Yang +10 more
wiley +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Anthropogenic nitrogen (N) deposition is a major driver of global change. However, its effects on the developmental plasticity of plant nutrient strategies remain poorly understood.
Quan Li +11 more
wiley +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Root activity creates unique microbial hotspots in the rhizosphere by influencing the metabolic activities of surrounding soil microorganisms, profoundly regulating the dynamics of soil organic carbon (SOC). However, how root economic strategies affect the formation and
Qiyu Tan +8 more
wiley +1 more source
, 2013 本文旨在探討教育研究在決策中的定位及其未來應有的展望。全文分成四部分，首先以時間為分析縱軸，闡釋西方國家自一九五○年代至今教育研究與決策間的互動關係；其次，以不同的模式分析教育研究與決策間的關係，如此作法，旨在打破長久以來，研究與決策之間常被視為一種線性關係的迷思。受到後現代思潮的影響，理論指導實踐的思考受到了挑戰，而教育決策與教育研究中教師的角色也應有所調整，這是本文第三部分所論述的重點。最後，教育政策研究應從以量化研究為主導走向質量取向的兼容；教師角色亦應由政策的執行者轉型為政策的參與者、形成者 ...
潘慧玲 (panhlw@gmail.com), 潘慧玲
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Permafrost thaw is reshaping nutrient dynamics in boreal forests, but its impacts on tree nutrient limitation and functional strategies remain poorly understood. Clarifying these responses is crucial for predicting the response of boreal forests to climate change.
Qiyue Fu +9 more
wiley +1 more source
基于改进载波移相SPWM的链式STATCOM电容电压平衡控制策略
Gaoya dianqi, 2012 介绍了传统载波移相SPWM及脉冲循环换位调制策略,指出了上述方法由于级联H逆变桥的电路参数及损耗差异等因素,无法真正实现链式STATCOM的电容电压平衡。笔者通过对传统载波移相SPWM调制策略进行改进,提出了一种新的链式STATCOM电容电压平衡控制策略,分析了该策略的基本原理与实现过程。通过PSCAD/EMTDC对该控制策略进行了仿真,结果说明,该策略可以很好地实现电容电压的平衡,而且对上层控制、装置的谐波特性不会产生影响。
刘正富, 徐政, 刘为群
doaj
Journal of Animal Ecology, EarlyView.This population‐comparative study reveals that male and female parents respond differently to social and ecological conditions. This sex‐specific responsive strategy is related to the incongruent parental care systems across populations in Chinese penduline tits.
Jia Zheng +5 more
wiley +1 more source
Inferring alternative ecosystem states with field survey data
Methods in Ecology and Evolution, EarlyView.Abstract Many ecosystems potentially exhibit alternative stable states, where distinct states can coexist under identical environmental conditions. While simulation models have generated key hypotheses in alternative stable states theory, they often rely on scale‐free parameters disconnected from real ecosystems.
Ning Chen +10 more
wiley +1 more source
, 2005 企业改制是我国市场经济发展过程中的现象之一,文章通过对企业改制中人力资源管理方面存在的问题进行阐述,提出了我国企业改制后人力资源管理方面的对策,即更新观念,提高对人力资源重要性的认知; 重视企业改制后员工情绪的问题 ...
方俐洛, 王明辉, 凌文辁
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