查询词典 on order

We discuss asymptotically best linear unbiased estimators of the Logistic population based on selected order statistics and give the formula of computing the ABLUE, the variance and the covariance of the ABLUE in limit, and properties of the ABLUE, and so on. We give the optimum chosen of spacing which is the ABLUE with maximum asymptotic relative efficiency based on complete sample when selected order statistics number is less than 10, and obtain its maximum asymptotic relative efficiency.

讨论基于Logistic总体Ⅱ型截尾样本的若干个样本分位数的总体分布参数的近似最佳线性无偏估计；给出了该近似最佳线性无偏估计的计算公式，估计方差与协方差的极限表达式及估计量的大样本性质等；给出了全样本，样本分位点个数固定，但不超过10情形下，使上述近似最佳线性无偏估计有最大相对联合估计效率时，样本分位数选取法及最大相对联合估计效率；为大样本情形下，该近似最佳线性无偏估计的应用提供了理论依据。

Taking electrostatic field as an example problem, based on the general analytical series solution of electrostatic field,(1) the zero, first and second order asymptotic boundary conditions on circular truncation boundary; and (2) the zero and first order asymptotic boundary conditions on arbitrary polygonal truncation boundary are derived.

有限元法计算无界电磁场问题是电磁场数值分析中的一个重要课题，在这里计算精度与计算量之间的矛盾尤为突出。

In this paper ,on one hand ,we establish the weakly asymptotic order of the classical Bernstein interpolation sequence approximate functionin the Wiener space(or 1-fold integrated Wiener space),on the other hand,we discuss the asymptotically order for the average error of Lagrange interpolation sequence, Hermite-Fejer interpolation sequence and Hermite interpolation sequence based on the Chebyshev nodes on the 1-fold integrated Wiener space.

本文一方面确定了经典的Bernstein多项式算子列逼近函数时在Wiener空间(或1-重积分Wiener空间)下的平均误差的弱渐近阶；另一方面确定了基于第一类Chebyshev多项式零点的Lagrange插值算子列、Hermite-Fejer插值算子列和Hermite插值算子列在1-重积分Wiener空间下的平均误差的弱渐近阶。

The effect of tribology factors on bearing vibration is studied experimentally. AR model and WPT are used to processing the normal arid abnormal signals. The results are as follows:1. The vibration of ball bearings is caused by the tribology action of contact pairs of ball and ring races and has the essential of tribo-dynamics. Any factors affecting the tribology characteristics of contact pairs will affect vibration and noise of bearings consequently.2. Vibration characteristics of bearing keep almostly unchanged with the increasing of axial load expecting the increasing of nature frequencies. When radial load increasing with axial load unchanged, nature frequencies keep unchanged but some new vibration peaks appears in the spectrum.3. Vibration amplitudes are damped and nature frequency are enhanced with sufficient lubrication. Vibration and noise of bearings increase obviously and roar can happen and the contact surfaces scratch slightly under insufficient and unclean lubrication state. Bearing will be disabled in a few minutes without any lubrication.4. Bearing vibration is unstable under low speed. With the speed increasing, the vibration become stable and natural frequencies increase slightly but the amplitudes increase apparently.5. Bearing vibration can be excited only by some harmonics ofwaviness without lubrication and by all harmonics with lubrication based on the theoretical analysis.6. The nature frequencies of ball bearings decrease with the increasing sizes. When international clearance increasing, nature frequencies decrease in radial and increase in axial and angular and the amplitudes increase in radial and decrease in axial and angular. When the number of balls increasing, nature frequencies increase and amplitudes decrease. When the pitch diameter increasing, axial nature frequency increase and others nearly keep no change. When outer race groove curvature radius increasing, nature frequencies increase in radial and decrease in axial and angular and amplitudes keep no change in radial and increase in axial and angular. When inner race groove curvature radius increasing, nature frequencies decrease and amplitudes increase.7. The distortion in amplitude and frequency components of bearing vibration signals picked up by the present probe measurement method is founded and right conclusions cannot be achieved by the signals. When accelerometer is rigidly screwed with steel stud onto a flat outer surface of a ball bearing, vibration signal can be got without distortion and the reliability of research on bearing vibration is assured.8. AR model is suitable for large samples of bearing vibration signals, square root of length of samples can be used as the upper limitation of order determination and the FPE order selection criterion is effective. Many advantages of AR spectrum are founded over the classical based on FFT.9. Time-Frequency analysis is necessary for abnormal noise of ball bearings. WPT overcomes the principle shortcomings of STFT and proved to be a best tool to process the abnormal signals.

理论分析和试验研究表明： 1球轴承振动是钢球—滚道接触副中的各种摩擦学作用引起的，具有摩擦动力学的本质，任何对接触副的摩擦学特性有影响的因素都将对球轴承的振动和噪声特性产生影响； 2中心轴向载荷作用下，载荷增大使球轴承的固有振动频率升高，载荷越大同样的载荷增幅引起的频率升幅减小，足够大的中心轴向载荷作用下载荷的变化对球轴承振动的频率特性不会产生明显的影响； 3轴向和径向联合载荷作用下，径向载荷不大时球轴承振动的固有频率基本不变，但是可能引起变刚度激励的非线性振动，出现新的频峰，过大的径向载荷将使部分钢球脱离接触，使球轴承的振动和噪声呈现不稳定状态； 4润滑对球轴承的振动和噪声特性有重要的影响，良好的润滑对振动有明显的抑制作用，润滑不充分时，振动和噪声的水平会有明显增高，一定条件下还会激发接触副中的谐振，发出啸声，造成接触表面的伤害，无润滑干接触时，短时的运转就会损伤接触副表面，使振动和噪声迅速增大，并随时可能引发严重的磨损和卡滞失效；接触副润滑良好时，油膜的"刚化效应"使球轴承振动的固有频率有所提高，润滑剂中含有弥散性污浊时，振动的幅度总体升高，但弥散性污浊不会改变球轴承振动的频率特性；浙江大学博士学位论文：球轴承振动的研究 5低速时，球轴承振动的基本特征呈现不稳定状态，随着转速的提高，球轴承振动的频率特性趋于稳定，固有频率频峰升高； 6理论分析表明，干接触时钢球和滚道表面波纹度的某些谐波分量能激励球轴承的振动，振动的幅值与谐波幅值成正比，实际球轴承中钢球的分布不可能完全均匀，波纹度的激励作用会随时发生；润滑接触的分析表明，波纹度的任意谐波分量均能激励球轴承的振动； 7球轴承的几何和结构参数分析表明，球轴承尺寸越大，径向、轴向和角振动的固有频率越低；钢球中心圆直径增大，球轴承的径向和轴向振动的固有频率基本不变，角振动的固有频率有所上升，振动的幅频特性基本不变；径向游隙加大使球轴承的径向振动固有频率降低，轴向和角振动的固有频率有所升高，径向振动幅频特性的幅值升高，而轴向和角向降低；钢球的数量增多使球轴承振动的固有频率上升，幅频特性的幅值下降，径向振动的幅值下降最为明显；外圈沟曲率半径系数增大使球轴承径向振动的固有频率升高，轴向和角振动的固有频率降低，径向幅频特性基本不变，轴向和角向幅频特性幅值升高；内圈沟曲率半径系数增大使径向、轴向和角振动固有频率均下降，振动幅频特性的幅值均有升高； 8试验对比表明，传感器采用探针式安装时，由于探针接触副接触特性的影响，钡(量得到的球轴承振动信号有失真，采用专门设计和制作的试验球轴承，以固定式安装加速度计，首次测量得到了球轴承振动的真实信号，通过对振动信号的分析，验证了球轴承振动的理论模型； 9)基于时间序列分析的AR模型适用于大样本球轴承振动信号的分析，以样本长度的均方根值作定阶上界，FPE做判阶准则，给出的AR谱光滑，频率分辨率高，是球轴承振动分析的简便而可靠的手段； 10以时频域分析的小波包变换分析球轴承异音信号能够比较好地定位和聚焦异音发生的时间，时间间隔，频率范围，同样是球轴承振动分析的可靠的手段，可用作球轴承故障诊断技术。

Gorat's - my favorite steakhouse - will again be open exclusively for Berkshire shareholders on Sunday, April 29, and will be serving from 4 p.m. until 10 p.m. Please remember that you can't come to Gorat's on Sunday without a reservation. To make one, call 402-551-3733 on April 2. If Sunday is sold out, try Gorat's on one of the other evenings you will be in town. If you order a rare T-bone with a double order of hash browns, you will establish your credentials as an epicure.

我个人最爱的牛排馆-Gorat's为了Berkshire股东年会破例在4月29日星期天开门营业，从下午4点开始营业，一直到晚上10点，请记得星期天事先若没有订位的人请勿前往以免向隅，要预约请在四月2日以后打电话(402-551-3733)，若订不到星期天的位子，也可以试试其它晚上，如果你点的是丁骨\牛排加上双份的牛肉丸的话，你就有资格被称作是老饕。

Chen Huagang interview is the love and the couple's classmate Chen Huagang, as are the acquaintances, Meng Fei and easy evening to the north of the state after they are placed in Chen Huagang lived next door to the hotel during the day and no arrangement with a group of people on the go the shooting scene, the so-called entertainment, for they are no longer strangers, especially the arrival of so many people Meng Fei of the shock, rather like the Incognito Travel like a calm and low-key, clothing teacher holding a strange clothes to different sectors of the The actor put on, there are professional actors star guest cast extras, plus some foreign actors to help out, as well as a lot of mess of temporary workers, the whole scene very loud noise, a hair stylist for everyone busy finishing hair, comb End 1 let go to make-up artists that make-up, a short while the new shape on the pendulum in front of everybody, photographers tune the machine just waiting for the director gives the order ready to start shooting shortly after a small lens may be made of a big-name stars , recordist actor holding a microphone followed by Ins and Outs about non-stop rotation, maintaining order there are many on-site commander Hu He is also leader of even a small rise in addition to chain the producer co-ordination, etc., etc. Some people say that the continuity clerk It is a big dye vat, some people say that this is art, there do not know, and complex social stories, strange, space shuttle pro-Chen Huagang busy as other journalists came together in front of different actors to mention the 1000 all over the trivial issue, Yi Xi, and Meng Fei feel a little bored aside turn up in the surrounding crowd, emotional confusion has long cast of Cloud Nine, the two girls, again back to sunny days filled with happy mood bare a sweet smile!!!

陈华刚采访的是love和陈华刚夫妇的同班同学，因都是熟人，孟菲和易夕到北州后也被安排在陈华刚住的宾馆隔壁，白天没什么安排就随一群人去了拍摄现场，所谓的娱乐圈，对于她们已经不再陌生，特别是孟菲的到来让不少人为之一惊，仿似微服私访般平静和低调，服装老师拿着千奇百怪的衣裳给不同界别的演员换上，有专业演员明星特邀演员临时演员，加有国外的演员助阵，以及一大堆乱七八糟的临时工，整个场面相当吵闹喧哗，发型师忙碌的为大家整理发型，梳完一个就让去化妆师那化妆，不一会新的造型就摆在大家的面前，摄影师调着机器只等导演一声令下随时准备开机拍摄，小小的镜头也许不久后就造了一个大牌影星，录音师拿着话筒紧跟着演员前前后后左右不停转动，维持秩序的现场指挥者有很多甚至小小的领队也呼喝起来，除此之外锁链着监制统筹场记等等等等有人说它是一个大染缸，有人说这是艺术，还有就不知道了，错综复杂的社会故事，千奇百怪的时空穿梭，百忙之中陈华刚拥随着其它记者一起走到不同演员面前提着千遍一律的琐碎问题，易夕和孟菲觉得有些无聊抛开人群在周围转了起来，情感方面的困惑早就抛之九霄云外，两个女孩重又恢复到阳光灿烂的日子，满怀着快乐的心情露着甜蜜的笑！！！

Trilemma effect is an important criteria for the self-convergence deflection system.The influence of the higher order Trilemma effect should be taken into account for the correction of the higher-order deflection aberrations.In this paper,when up to the seventh-order Trilemma constants are adjusted,the expression of the influence of 2n-pole multipole field on n-th order Trilemma constant has been deduced and this influence has been calculated.

Trilemma效应［1，2］是在彩色显像管中应用自会聚偏转系统对偏转像差校正时所必须考虑的一个重要问题，在大偏转角下对高级偏转像差的校正必须考虑高阶Trilemma效应的影响，文献［3］应用多极场偏转像差校正理论［4，5，6］，采用区域分割的方法，对直至七阶的Trilemma效应进行了分析，在文献［3］中对Trilemma效应分析时，用到了下面的近似

High-order harmonic radiation with noble gas and N〓 in static gas target has been obtained, and the effects on high-order harmonic efficiencies due to laser intensities , polarization, gas densities, confocal parameter, media characteristic and phase mismatch have been discussed. The experimental results show that the high-order intensities grow with the incident laser intensities and gas densities, and high-order harmonic signals amplify in the same time.

高次谐波辐射是强场物理中与电离过程相伴而生另一种重要过程，本文利用飞秒激光在静态气室中获得全部的稀有气体原子以及氮双原子分子5到21次的谐波发射，着重讨论了激光功率密度、激光偏振、气体密度、共焦参数、介质本身以及相位失配对高次谐波转换效率的影响。

For the highly successful raider of the "buckateers" now entered what was for him a new world, about which he had much to learn:"stock ahead"(an order isn't executed at a specific price although it is printed so on the tape—meaning someone else's order has hit the floor first);"matched and lost"(orders arriving simultaneously at a post on the floor, with insufficient stock available at a specific price, are executed according to the flip of a coin) and the arena of the "late tape"(during periods of activity, trades printed on the tape may be five to ten minutes behind actual trades on the floor and the speculator cannot demand an execution even though he sees the price on the tape go through his limit).

他在袭击非正规经纪公司方面是高度成功的，现在他进入的是一个崭新的世界，他有很多东西要学：优先成交&报价带显示了这个报价，&(但是这个价格的订单却没有被成交——这意味着别人的订单提前成交了)订单数量不匹配&，&(订单到了场内，但是没有足够的股票成交，只好掷硬币决定)，还有&报价延时&(报价带上面的价格比真实的交易价格延迟了 5 到 10 分钟，即使投机者看见了报价带上面的价格，他也无法成交)。

The nth order perturbation corresponds to the nth order scatterings and reflections between the head and torso, therefore, for the conditions of the snowman model, the effects of the earlier three scatterings and reflections on HRTFs are important, and the contributions of the fourth-order and higher-order ones are neglectable.

由于 n 阶微扰在物理上是和头部和躯干之间的 n 重散射相对应的，因而本文的结果表明，在雪人模型的条件下，头部和躯干的前三阶多重散射对 HRTF 是重要的，四阶及以上散射可以忽略。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。