然而，这项研究缺乏一个控制组并且采用的是非随机抽样，他们表示。
However, the study lacked a control group and used nonrandom sampling, they noted.
这份研究只包含了双盲随机控制实验，这是找寻治疗效果最好的研究方式。
The review included only double-blind randomised controlled trials, which are the best type of study for finding out the effects of a treatment.
他们的研究是一个在四个城市进行的随机、控制试验。
Theirs was a randomized, controlled trial conducted in fourcities.
为了更好的理解影响长寿的遗传因素，研究人员分析了年龄在95至119岁之间的800多个研究对象的DNA，并将其与随机控制变量的DNA进行比较。
To better understand the genetic components of longevity, the researchers analyzed the DNA of more than 800 subjects between the ages of 95 to 119 and compared it with DNA from random controls.
最近，研究人员推出第一批随机试验品，他们称这为无副作用，非处方，仅仅影响食欲的控制剂。
Now, researchers have presented the first randomized trial of what they hail as a side-effect-free, prescription-free and simply free appetite control agent.
该研究是在墨西哥进行的一个更大的随机控制实验的组成部分，研究者是埃默里大学和当地的研究者。
The study was part of a larger randomized controlled trial conducted in Mexico by researchers from Emory University and local investigators.
这次批准的依据是2次前瞻性随机双盲安慰剂控制对照临床研究的数据。
The approval was based on data from 2 prospective, randomized, double-blind placebo-controlled clinical studies.
在二十世纪六十年代，波音公司的研究人员要求志愿者用脑力控制随机数字发生器。
Boeing researchers asked volunteers in the 1960s to control a random-number generator with mind powers.
为了该研究，瑞士的研究人员合并了来自31个随机，控制实验，这些是被视为“金标准”科学证据。这些实验包含了超过116,000位患者。
For the study, Swiss researchers pooled data from 31 randomized, controlled trials, which are considered the "gold standard" of scientific evidence. The trials included more than 116,000 patients.
在对随机过程远程模拟控制理论进行研究的基础上，建立了一个严谨离散化的，便于工程应用的RPC模型。
On the basis of the profound research on the theory of random process remote simulative control, an RPC model is established.
针对研究对象，在高度控制系统设计中，引入多目标多约束的随机射线优化方法。
Based on the research object, the random radiation optimization of multitargets and multi-restrictions is introduced into the design of altitude control system.
研究结果表明，与随机配对的搭档相比，夫妻二人控制免疫系统的DNA区域中基因差异更大。
They found evidence that married couples are more likely to have genetic differences in a DNA region governing the immune system than were randomly matched pairs.
本文研究能用随机事件图模拟的指挥控制系统信息处理瓶颈的分析算法。
This paper focuses on bottlenecks analysis algorithm of information processing for command and control system via stochastic event graphs.
研究了8米口径智能天线结构在随机风荷作用下其保精度闭环控制随机响应问题。
The problems of guaranteed precision of random dynamic response of closed loop system of 8-meter intelligent caliber antenna under random wind excitation are studied.
研究了敏捷制造车间(AMW)中的最优递阶随机生产计划与控制问题。
The paper explores the problem of optimal hierarchical stochastic production planning and control in agile manufacturing workshops (AMW).
研究一类随机系统具有期望的动态误差系数、稳态输出方差和相对稳定裕度约束的满意PID控制问题。
The problem of satisfactory PID control for a class of stochastic systems with constraints on dynamic error coefficient, steady-state output variance and relative stability margin is considered.
研究了马尔可夫跳变参数时滞随机系统的鲁棒保性能控制问题。
The problem of the robust guaranteed cost control for time-delay stochastic systems with Markov switching parameters is discussed.
对成本控制矩阵不确定随机二次控制问题进行研究，给出了成本控制矩阵不确定的随机二次保成本控制的定义。
This paper discusses the problem of the stochastic quadratic guaranteed cost control with an indefinite cost control matrix, gives the definition of the stochastic quadratic guaranteed cost control.
这些结果对进一步展开对随机2-D系统的状态估计，最优控制和其它方面的研究都具有重要意义。
The results obtained in this paper are very important for the further studies on the state estimation and optimal control of 2-D linear systems with stochastic input.
在连续时间金融市场模型的研究中，随机控制理论和方法已成为重要的研究手段之一。
In the study of continuous time financial market modeling, the theories and methods of stochastic control have been one of important tools.
针对随机压电智能桁架结构研究了基于概率的结构闭环控制系统动力响应分析模型与方法。
The problems of dynamic response analysis of closed loop control system based on probability for the random intelligent truss structures are studied.
在随机时滞大系统的系统分析中，系统的渐近行为分析和控制是工程设计的主要目标。故而，研究时滞随机大系统是很有必要的。
Since the analysis and control of asymptotic behavior is main objective to the design project, it is necessity to study the stochastic large-scale system with delay.
本文利用随机脉冲控制理论研究了在收取固定和比例交易费的市场环境下，公司如何制定其最优的财务策略。
To address this inadequacy, an optimal control problem is discussed using stochastic impulse control theory to determine the optimal policy.
同时，还指出这类变分方程在随机控制的研究中有着重要的理论意义。
Also we point out that this kind of variational equations has a main theoretical meaning in the study of stochastic controls.
论文研究了一类带参数非严格反馈形式的随机非线性系统的自适应控制问题。
The adaptive control of a class of stochastic nonlinear systems in parametric non strict feedback forms is studied.
针对随机参数压电智能桁架结构研究了基于概率的结构闭环控制系统动力响应分析模型与方法。
The problems of dynamic response analysis of closed loop control system based on reliability for the intelligent truss structures with random parameters were studied in this paper.
针对随机参数压电智能桁架结构研究了基于概率的结构闭环控制系统动力响应分析模型与方法。
The problems of dynamic response analysis of closed loop control system based on reliability for the intelligent truss structures with random parameters were studied in this paper.
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