时界

基于统计性QoS保证的数据包延时界调度算法

A scheduling algorithm based on packet delay bound with statistical QoS guarantee

证明了齐三次项互素时有界的三次Kolmogorov型系统在赤道上孤立奇点附近轨线的分布情况有且仅有4种。

We obtain there are only four behaviors of the trajectories near isolated critical points at the equator of the bounded cubic Kolmogorov type system , if the homogeneous polynomials of degree 3 are relatively prime .

方法：将1999年1月～2000年4月间的317例病人以我院营养支持小组成立时为界，分为成立前（BET组）、成立后（AET组）两组。

Methods : 317 patients ( form Jan.1999 to Apr.2000 ) were divided into two groups according to the time of establishing NST in the hospital , before establishing term ( group BET ) and after establishing term ( group AET ) .

目的研究羊水板层小体计数在预测胎儿肺成熟时的界值，同时探讨促胎肺成熟治疗对LBC的影响。

Objective To study the cutoff value of amniotic fluid lamellar body counts in prediction of fetal lung maturity and observe the influence on LBC of antenatal corticosteroid therapy for fetal lung maturation .

在随机混沌研究中，应用随机Melnikov过程的均方准则研究了单摆在有界噪声激励下发生混沌或随机混沌时有界噪声激励的临界幅值；

In the study of the stochastic chaos in simple pendulum , the random Melnikov process is derived and the mean-square criterion is used to determine the threshold amplitude of the bounded noise excitation for the onset of the chaos or random chaos in the system .

《纽约时报》（theNewYorkTimes）日前宣布解雇总编吉尔o艾布拉姆森时，传媒界一片哗然。

Jaws collectively dropped in the media fishbowl yesterday with the announcement that New York Times editor-in-chief Jill Abramson was losing her job .

我刚考入英国皇家艺术学院（RoyalCollegeofArt）时，时尚界认为帽子只适用于老年女士戴，我当时就认为纯属荒唐之极，崔西说。

When I started at the Royal College of Art , they thought hats were for old ladies , but I thought that was completely insane , says Treacy .

仿真实验表明三种方法的估计性能在较低信噪比时达到Cramer-Rao界（CRB）。

Simulations show that the Cramer-Rao bound ( CRB ) can be attained by the proposed methods even at low signal-to-noise ratio ( SNR ) .

以逆时针型绕上腔静脉口时多数在界沟附近有一下行袢，此袢在房间后沟内仅见2例，与McAlpine的观察结果不同。

During their course around the orifice of the superior vena cava , a descending loop is present in the posterior interatrial sulcus , only in two cases which is different from McAlpine 's observation .

在过去克隆人的呼声高涨时，科学界曾掀起了一场“反克隆人运动”。

At the time of the voice of human cloning on the upsurge , scientific groups launched the movement of anti-human cloning .

介绍了逆最优控制的基本思想，针对一类具有未知定常参数和未知时变有界扰动的严格反馈非线性系统，给出了逆最优增益配置定理。

This paper introduces the basic idea of inverse optimal control and gives the solvable theorem of inverse optimal gain assignment problem .

在测试所有这些问题时，研究界肯定能做得比过去好得多。

The research community can certainly do a much better job than it has in the past of testing all these questions .

当博客和互联网用户为宪法委员会昨晚的裁决欢呼时，娱乐界则陷入了苦涩。

While bloggers and internet users cheered the council decision , announced last night , the affair has left a bad taste in the entertainment world .

该文针对存在时变有界长时延的网络控制系统，讨论了具有时延补偿功能的状态观测器以及状态反馈控制器的设计方法。

Considering the networked control systems ( NCS ) with time-vary long delays , a design method of feedback controller and observer with delay compensation is discussed .

这些学校学分制实验如火如荼地展开时，学界对普通高中实行学分制的探讨和研究近乎空白。

Although the experiments of using the credit system in these schools are enthusiastically carried out , explorations and researches on it are still a virgin ground in the academic world .

在对双边贸易关系及特点进行探讨时，学术界通常以比较优势理论、产业内贸易等经典贸易理论为理论依托，有力地解释了贸易迅猛发展的原因。

When explore bilateral trade relations and characteristics , academia usually relies on classical trade theory like theory of comparative advantage and intra-industry trade theory to explain the reasons of the rapid development of trade .

门克斯认为，那是因为设计师们对所有类型的旧制服仍怀有浪漫感情：“当服装不再为它的原始功能服务时，时装界就会引入战时造型。”这是目前军装盛行的前兆。

Menkes diagnosed a romance for old uniforms of all stripes : " Wartime images tend to be absorbed into fashion when the clothing no longer serves its original function . " This was the advance guard of the current moment 's military formation .

然而，当一位维也纳内科医生发现，要保住病人、尤其是新生儿的性命，外科医生所能做的最重要的事是洗手时，医疗界抵制这项创新的时间长达半个世纪。

However , when a Viennese physician discovered that the most important thing surgeons could do to keep their patients alive , especially those who were newborn infants , was to wash their hands , the profession resisted the innovation for half a century .

将样品放到磁场中，当磁场改变时，其监界温度Tc也随着变化。

While the magnetic field is changing , the critical temperature is being changed .

给出（特别是在自反空间时）一致有界C0半群的生成元是有界线性算子的充分条件；

Some sufficient conditions are obtained under which the generators of unanimously bounded C_0-semigroups are bounded ( in particularly on reflexive spaces );

南水北调对对潮流界的影响比对潮区界的影响大，1月调水1000m~3／s时使小潮潮流界上移10km，对大潮潮流界无太大影响。

South-to-North Water Diversion Project will make neap tidal current limit move upstream about 10km , but affects spring tidal current limit little .

该文考虑CDMA蜂窝移动系统，在假设系统信道增益时变、有界的情形下，把一个时变系统功率控制问题转化为具有确定信道增益功率控制问题。

In this paper , a distributed fixed-step power control algorithm is presented for CDMA cellular mobile systems . The power control problem of time-varying systems is converted to the power control problem with fixed-channel gain under the assumption that the system channel gain is time-varying and bounded .

这些受负载、通信协议等影响的时延，无论固定或时变还是有界或无界，都会不同程度影响控制系统性能，甚至导致系统失稳，这给NCS分析、设计和控制带来很大困难。

The delay , which is affected by network load , communication protocol and some other factors , whether constant , time-varying , bounded or unbounded , can influence control performance , it can even cause system instability , which brings difficulties to analysis and design of NCS .

她还是少女时就在电影界取得了成功。

She made it in films when she was still a teenager .

步入21世纪之时，美国企业界对于自身的成就和潜力自信满满。

American business entered the 21st century brimful of confidence in its achievements and its potential .

每当国际政治格局发生重大变化时，西方知识界往往率先关注他的表现。

Whenever the international political pattern to produce major change , the Western intellectual circles tend to lead concerned about his performance .

在现行法律未提供明确的规范时，在理论界和司法实践中存在两种截然不同的观点和判决。

Before laws in effect provide clear criteria , there exist two completely different ideas and judgments in theoretical world and judicial practice .

引起时滞的因素是不明确的，并且时变是有界的。

The parametric uncertainties are assumed to be time-varying and norm bounded . The time-delay factors are unknown and time-varying with known bounds .

然而，当中国因为领土纷争而在9月限制向日本出口稀土时，日本工业界顿时慌了神。

Still , when China curbed rare earths exports to Japan in September following a territorial dispute , Japanese industries had to scramble .

针对参数不确定性的未知、时变、有界特点，设计出鲁棒状态反馈控制器及相应的切换策略。

The parameter uncertainties are time-varying and unknown but are norm-bounded . Robust state feedback controllers and two classes of switching laws are designed .