查询词典 be sufficient for

It consists of the next three aspects: firstly, we study Murthys' open problem whether the augmented matrix is a Q0-matrix for an arbitary square matrix A , provide an affirmable answer to this problem , obtain the augmented matrix of a sufficient matrix is a sufficient matrix and prove the Graves algorithm can be used to solve linear complementarity problem with bisymmetry Po-matrices; Secondly, we study Murthys' conjecture about positive semidefinite matrices and provide some sufficient conditions such that a matrix is a positive semidefinite matrix, we also study Pang's conjecture , obtain two conditions when R0-matrices and Q-matrices are equivelent and some properties about E0 ∩ Q-matrices; Lastly, we give a counterexample to prove Danao's conjecture that if A is a Po-matrix, A ∈ E' A ∈ P1* is false, point out some mistakes of Murthys in [20] , obtain when n = 2 or 3, A ∈ E' A ∈ P1*, i.e.

本文分为三个部分，主要研究了线性互补问题的几个相关的公开问题以及猜想：(1)研究了Murthy等在[2]中提出的公开问题，即对任意的矩阵A，其扩充矩阵是否为Q_0-矩阵，给出了肯定的回答，得到充分矩阵的扩充矩阵是充分矩阵，并讨论了Graves算法，证明了若A是双对称的P_0-矩阵时，LCP可由Graves算法给出；(2)研究了Murthy等在[6]中提出关于半正定矩阵的猜想，给出了半正定矩阵的一些充分条件，并研究了Pang~-猜想，得到了只R_0-矩阵与Q-矩阵的二个等价条件，以及E_0∩Q-矩阵的一些性质；(3)研究了Danao在[25]中提出的Danao猜想，即，若A为P_0-矩阵，则，我们给出了反例证明了此猜想当n≥4时不成立，指出了Murthy等在[20]中的一些错误，得到n=2，3时，即[25]中定理3.2中A∈P_0的条件可以去掉。

Based on the existence of the solution to a LMI, a sufficient condition is obtained under which the composite systems can be quadratically stabilized with a H〓 norm bound constant on disturbance attenuation for all admissible uncertainties and a necessary and sufficient condition is obtained using BMI.

采用线性矩阵不等式方法，给出了系统可鲁棒H〓分散镇定的充分条件；采用双线性矩阵不等式方法，给出了系统可鲁棒H〓动态输出反馈分散镇定的充要条件，并给出了算法。

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。

Competent commercial departments at all localities shall actively coordinate pertinent local departments for support small and medium circulation enterprises to promulgate tax and financial support policies related to pioneering work encouragement and supports given to small and medium circulation enterprises for business innovation, technical innovation and market exploration, reduce costs for the restructuring and reform of small and medium circulation enterprises, encourage the financing by means of income from operation of state-owned enterprises' assets, liquidity of commercial land, reduction of state-owned capital in circulation enterprises, transfer and financial allocation, in places where conditions permit, set up special funds for the reform of state-owned small and medium circulation enterprises which shall be used to pay the restructuring fee which is payable by and fails to be paid by restructured enterprises lacking strength to do so, and to pay the social insurance and economic compensation, the payment of which the cash after liquidity of assets of enterprises in bankruptcy is not sufficient to cover, actively coordinate with the local department for real estate administration for its support, solve problems on the ownership of commercial real estate which has been used for long by state-owned small and medium circulation enterprises, and earnestly implement the preferential policies of the State concerning the reemployment of laid-off workers by enterprises and concerning the establishment of small and medium enterprises by laid-off workers from state-owned enterprises.

各地商务主管部门要积极协调当地有关部门出台鼓励创业、支持中小流通企业经营创新、技术创新和开拓市场的税收政策和金融支持政策，降低中小流通企业的改革、改制成本。鼓励有条件的地方通过国有企业资产经营收益、商业用地变现、流通企业国有资本减持、转让以及财政拨付等方式筹措资金，建立国有中小流通企业改革的专项资金，用于无力支付改制费用企业的改制费用以及破产企业资产变现后不足支付职工社会保险、经济补偿等方面费用。要积极协调，争取地方房产管理部门的支持，解决国有中小流通企业长期使用的商业用房产权归属问题。要认真落实国家关于企业吸纳下岗职工就业和国有企业下岗职工创办中小企业的优惠政策。

In the second place, they may be of different kinds depending on whether they assert that a certain practice is necessary, sufficient, or neither necessary nor sufficient but still helpful, for the fostering of the disposition referred to in premiss, or simply that it is more effective in doing so than other methods are; and the conclusion in must be understood differently, depending on which of these claims they make, though the argument may in each case be read as establishing that the practice in question has some value or desirability.

其次，它们可能属于不同的种类，依赖于它们是否声明一种特定的实践是必需的、足够的或既不必需又不足够但仍然是有助的，因为就要培养的性状在前提中已经涉及，或简单地说它这样做比别的方法是更有效的；而且，中的结论，必须依赖他们提出的是这些声明中的哪一个，被进行不同的理解，虽然，关于问题中提到的实践，是有一定价值或是让人心满意足的争论，如在建立时那样能够在每一个例子中被读到。

Since the above six are self-sufficient man likes to do the job, and the pursuit of self-worth, feel self-care, personal space, respect for another's privacy, pay attention to personal style and taste, do not follow the crowd, there is awareness of the law of "80 After "will consciously dislike these acts: for example, talk to others for no reason," 80 after the "more agreeable to the West are more concerned about the self-opinion, very few non-Road, concerned about others; such as, enjoy preaching others," 80后" from an early age from schools, parents, etc. too much preaching, preaching and therefore acts very much, resulting in antagonistic, their attention; For instance, to belittle the advantages of others,"80 after" consider embodies self-worth is not to derogate others premise, the more The more derogatory of others to explain their value enough, are their attractions; For instance, smoking in the office,"after 80" would be a focus on self and respect for others the organic integration of generation, because these two are not always contradictory, if that "after 80" only know that take care of their own convenience, on the wrong; such as, the mentality of not enough sunlight,"80后" feel self-care, therefore, delighted to do anything on an individual basis or as a premise, we think that good , but their psychological upset, does not endorse, they will not act in accordance with the meaning of the U.S., the ultimate manifestation of personal values on the individual feel, are their characteristics; For instance, loud make personal phone calls,"80, after" personal space, respect for others Privacy, therefore, in a public office area will be less and less to see the "80 after" unscrupulous people talking about the workplace their own affairs, the concept of privacy, especially popular in this generation will be reflected in the workplace in the past.

因为，上述6条都是不够自我的职场中人喜欢做的，而追求自我价值、在乎自我感受、重视个人空间、尊重他人隐私、讲究个人风格与品味、不随波逐流、有法律意识的"80后"会自觉地不喜欢这些行为：比如，无端议论他人，"80后"比较认同西方人较为关注自我的观点，很少道人是非，关注别人的事；比如，喜欢说教别人，"80后"从小受到来自学校、家长等的太多说教，因此对说教行为很反感，从而产生逆反，自己注意；比如，贬低别人优势，"80后"认为体现自我价值不是以贬损别人为前提的，越贬损别人越说明自己的价值不够，是他们的过人之处；比如，在办公区吸烟，"80后"将是注重自我和尊重别人有机结合的一代，因为这两者始终不矛盾，如果认为"80后"只知道照顾自己的方便，就大错特错了；比如，心态不够阳光，"80后"在乎自我感受，因此，任何事情是以个人高兴与否作为前提的，大家觉得好，但自己心理不高兴、不认可，便不会根据大家的意思行事，个人价值最终体现在个人感受上，是他们的特点；比如，大声打私人电话，"80后"重视个人空间、尊重他人隐私，因此，在公共办公区将越来越少地看到"80后"职场人肆无忌惮地谈论自己的事情，隐私的概念在这一代特别流行，将会体现到职场中来。

In Chapter 3 Firstly, the exponential stability in mean square and almost sure exponential stability for neutral stochstic neural networks with time-varying delay can be discussed by using the linear matrix inequality and the semimartingale convergence theorem; And our sufficient conditions are less conserative; Secondly, by utilizing the fixed point theorem, some sufficient and necessary conditions ensuring the asymp- totic stability in mean square for neutral stochastic neural networks with time-varying delays can be given.

第三章首先，利用线性矩阵不等式方法和半鞅收敛定理，考虑了一类具变时滞中立型随机神经网络的二阶矩指数稳定性和几乎必然指数稳定性，所得到的条件保守性要好；其次，采用不动点方法，给出了具变时滞中立型随机神经网络的二阶矩渐近稳定性的充要条件。

Other statutes were: that no one should be admitted to Holy Communion who had not been confirmed (Council of Lambeth, 1281); that neither father nor mother nor stepparent should act as sponsor (London, 1200); that children to be confirmed must bring "fillets or bands of sufficient length and width", and that they must be brought to the church the third day after confirmation to have their foreheads washed by the priest out of reverence for the holy chrism (Oxford, 1222); that a male sponsor should stand for the boys and a female sponsor for the girls (Provincial Synod of Scotland, 1225); that adults must confess before being confirmed Constitution of St.

其他法规有：任何人都不应被接纳为圣餐谁尚未得到确认（理事会的兰贝斯， 1281 ）；，无论父亲还是母亲，也不stepparent应作为赞助商（伦敦， 1200 ）；，儿童得到确认必须使"鱼片或带足够的长度和宽度"，他们必须把教会的第三天后，确认他们的额头洗牧师的崇敬的神圣chrism （牛津， 1222 ）；，一个男性赞助商要站在为男孩和一名女赞助商的女孩（省议会，苏格兰， 1225 ）；，成年人必须承认，在得到证实（宪法的圣埃德蒙的坎特伯雷，约1236年）。

The ultimate objective of education should be for the advancement of human society , the general and sufficient development for individual is the concrete aim, but now there are a lot of disharmony sound in the symphony of education, the principal reasons are the lake of understand and misconstruing the education, we hope we think much and defecate in theory and in practice, learning to be, learning to understand, and learning apperception , should be the basic ideas for the future education.

教育应当以人类社会进步为终极目标，以个体全面、充分发展为具体目标，但是当前教育交响曲中有许多不和谐音，其中首要的原因是对教育目的理解的不足和甚至误解，我们希望在理论上和实践中都引起重视，予以澄清，将学会生存，学会理解和学会领悟作为面向未来教育的基本理念。

Modeling and stability analysis problem of linear switched system are emphasized in this part and main results include:(1) Through investigation in the projection of 〓 on x, where x denotes continuous state vector, a series of sufficient conditions for stability, asymptotic stability and unstability of linear switched system's equilibrium in the sense of Lyapunov are achieved. And also, a sufficient and necessary condition for state bounded stability of linear switched system is received.(2) For a class of periodical linear switched system whose switching sets are a group of ordinal lines starting from the original point, it's proved that state bounded stability can be defined by the running characteristic in a single period (3) Based on linear switched system, the concept of linear switched system network is put forward. Linear switched system network is a complex network interconnected by many linear switched systems.

这部分着重研究线性切换系统的建模与稳定性分析问题，主要成果包括：（1）通过考察〓在x上的投影，得到线性切换系统的平衡点在Lyapunov意义下稳定、渐近稳定及不稳定的一系列充分条件，并得到了线性切换系统状态有界稳定的一个充要条件；（2）证明了对于一类切换集为从原点出发的一组射线的周期线性切换系统，其状态有界稳定可根据一个周期内的系统运行特性来判定；（3）在线性切换系统的基础上提出了线性切换系统网络的概念，线性切换系统网络是由多个线性切换系统交互作用而形成的复杂网络。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失