One hypothesis is that it's a natural phenomenon, that the starfish naturally undergo population fluctuations following particularly good spawning years.
有一种假说认为，这是一种自然现象；在特别适合产卵的那几年后，刺冠海星自然会经历种群数量的波动。
In the following sections, we verify our hypothesis and evaluate the role of climate change on war outbreak and population decline with empirical data at global and continental scales.
在以下的章节中，我们将以实证数据在大陆和全球的范围内验证验证我们的假说，评价气候变化对于战争爆发和人口下降的影响作用。
The alternative hypothesis -- that a difference in proportions exists in the population -- is statistically more likely to be true.
另一种假设 — 对象总体中存在着比例差异 — 在统计上可能更正确。
The population projections they derive make the “high-count” hypothesis “highly implausible,” they argue.
这个预测使他们能够争论“高支”假设是“难以置信”的。
Our hypothesis is that about 1 or 2 percent of the population fails to develop a normal thickness of bone overlying the superior canal.
我们的假设是大概1% ~ 2%的人头部无法形成覆盖上半规管的正常厚度骨头。
Annual-scale analysis for the period A.D. 1400–1900, which has higher-resolution population data, could help verify the above hypothesis.
公元1400年至1900年期间以一年期为尺度的高分辨率人口数据分析报告有助于我们验证上述的假设。
The alternative hypothesis that you can then entertain is that the proportions are different in the population of interest.
那么，另一个可接受的假设是在所研究的总体中，各种回答所占比例不同。
In the first hypothesis we do nothing. By the year 2000, the southern parts of the world would then have a population greater than the total world population today.
第一个假设是我们什么也不做。这样到2000年，南半球部分国家人口总量将比目前全球人口总量的还多。
We tested the hypothesis that common haplogroups predict risk of ischemic cardiovascular disease, morbidity from other causes, mortality, and longevity in a general population of European descent.
我们在欧洲家系一般人群中证实了假说共同单倍群可预测缺血性心血管病的危险性、其他原因患病率、死亡率、生存率。
Using a dynamic economic model with a life_cycle hypothesis, this paper examines the effect of population change on economy.
本文用一个带生命周期假说的经济动态模型全面考察了人口变动对经济的影响。
This paper reviewed the new progress in the theory and hypothesis of population regulation in small mammals, focusing on the food hypothesis, predation hypothesis and multi-factorial hypothesis.
对小型哺乳动物种群数量周期性波动的外因调节假说进行介绍，概述了食物假说、捕食假说和复合因子假说的主要内容和研究进展。
This tool is used to test the null hypothesis that there is no difference between two population means against either one-sided or two-sided alternative hypotheses.
此工具用于检验两个总体平均值之间不存在差异的空值假设，而不是单方或双方的其他假设。
The hypothesis implies, second, that a rising share of population in the workforce will also result in an increase in the saving rate.
其次，这个假说暗示，劳动力人口在总人口中比例上升，会导致储蓄率上升。
His own earlier research in a Greek population provided weak evidence in favor of the nap hypothesis, but another, larger study, conducted in Costa Rica failed to show an association.
他自己在希腊人群中进行的前期研究给出了微弱的证据支持午睡设想，但是另外一个在哥斯达黎加人中进行的大型研究没有显示两者有联系。
Under population follow normal distribution hypothesis, designing combine median-range adaptive control charts with variable sampling interval, variable sample size and variable control limit .
在假设总体服从正态分布的条件下，设计了抽样区间，样本容量和控制限都变化的全变化参数的中位值-极差联合控制图。
The z-Test tool can also be used for the case where the null hypothesis is that there is a specific nonzero value for the difference between the two population means.
检验工具还可用于当两个总体平均值之间的差异具有特定非零值的空值假设的情况。
We test the hypothesis that sense of coherence (soc), a marker of social stress adaptive capacity, is associated with incident stroke in a population-based prospective cohort study.
在对基于种群的前瞻性队列研究中我们对一个相关性意义(SOC)的假说进行了试验，即对社会压力适应能力的标记与突发中风的相关性意义。
We test the hypothesis that sense of coherence (soc), a marker of social stress adaptive capacity, is associated with incident stroke in a population-based prospective cohort study.
在对基于种群的前瞻性队列研究中我们对一个相关性意义(SOC)的假说进行了试验，即对社会压力适应能力的标记与突发中风的相关性意义。
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