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.

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Based on the one to one correspondence of the points on the tooth trace of plunge shaving cutter and the shaved gear, a method used to calculate the axial modification of the plunge shaving cutter when processing a crown gear is proposed.

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The energy distribution of the focused laser spot has Gaussian profile, and if the exposure dose threshold of the photoresist is less than and far away from the peak of that Gaussian curve, the linewidth will be less affected by the variation of exposure dose or exposure dose threshold, and so, will improve the linewidth stability.

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In this thesis the process of constructing the non-perturbative Hamiltonian theory is de-scribed and is applied to estimate the vacuum condensate. It contains the following contents:At the very beginning, by using the path integral method and eliminating the gluon freedom, aGCM action 〓 of current quarks including lower order current-current coupling was derivedfrom the QCD Lagrangian and the effective Hamiltonian operator that could hardly be doneby the normal methods was derived. After doing this, the broken vacuum is introduced whichincludes quark-antiquark condensate through the generalized Bogoliubov-Valatin transformation,the effective Hamiltonian of constituent quark was derived. The detailed formulas containingthe spatial current-current coupling term for the effective Hamiltonian and gap equations wasworked out by parameterizing the correlation kernel as a quadratic potential. And then, the gapequation was solved and the quark-antiquark condensate of vacuum was studied both in the casesof instantaneous interaction and retarded interaction. In the end, the effective Hamiltionian withtwo-body quark-quark interaction was derived with one-body approximation, and with the helpof the functional integral method the coupling non-linear dynamic equations for systems withnuclear matter was derived. Finally, these equations were solved by selfconsistent method andthe effect of nuclear matter on vacuum condensate was studied. The spatial current-current coupling term is too difficult to handle, hence the correlationkernel is assumed to be not important and usually omitted in the pure vacuum condensate, andthe instantaneous interaction generally is adopted. Retaining the spatial current-current termand partial retardation effect, the quark pairs condensate in pure vacuum was studied, and theeffect of quark mass was also studied. At present, little study is focused in the case with nuclearmatter and spatial current-current term also omitted. Under the approximation with partialspatial current-current term, the effect of nuclear matter on vacuum condensate was studied.

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The first one is integrated by the least squares and the radical basis function interpolation, which is aimed to the slight nonlinear sensors, and under the limited increament of computation, it can make the results more precise. The second is used for serious nonlinearity and based on the moving least squares which converts the approximation generally into locally, and the result of this way is also satisfied.

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It can adjust time interval in light of approximation effect, and the current segment's approximation error is not influenced by other segments'. This method can improve approximation precision of reach set and makes the verification applicable in practical systems.

該方法可根據(jù)近似誤差自動(dòng)調(diào)節(jié)近似時(shí)所用的時(shí)間間隔，每段的近似誤差不受其它段的影響黄色一级成人网站免费，達(dá)到提高近似精度和減少計(jì)算量的目的日韩美国一级欧美一级，從而進(jìn)一步降低驗(yàn)證方法實(shí)現(xiàn)的難度。

Results of analysis show that Generalized Paris Law can consider the complex crack propagation in the material of the pavement structure. The fatigue life of the pavement increases with increasing thickness of surface layer in a power function. Use of a thicker surface layer may extend the service life of the asphalt pavement. The fatigue life increases with decreasing modulus of surface layer in a power function with a negative exponent. However, since reduced modulus would scarify the structural strength and might cause rutting-related distress, caution should be taken when using low modulus materials for improving fatigue performance of asphalt pavements. The fatigue life increases with increasing modulus of base material in a power function. However, the fatigue life can not infinitely increases with increasing modulus of the base.

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Unlike the LSD,the SIC-LSD Hamiltonian is not invariant undera unitary transformation among the occupied orbitals,which must be determined self-consistentlyfrom minimizing the SIC-LSD total energy.

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Experimental results show that the zero effort miss vector calculated by using approximate formulas is close to the real miss vector. Under the conditions of small initial errors, the satisfied results can be obtained by approximate function. The zero effort miss vector obtained can be used for the preliminary design and analysis of kinetic interceptor guidance.

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In addition, the leakage coefficient decreases with the decrease of gap width at the same rotational speed.

研究結(jié)果表明：用相對(duì)流量系數(shù)（轉(zhuǎn)動(dòng)時(shí)的流量系數(shù)與靜止時(shí)的流量系數(shù)的比值）與速比（周向速度與軸向通流速度的比值）的函數(shù)關(guān)系表征泄漏量隨轉(zhuǎn)速變化的規(guī)律時(shí)免费人成短视频观看网站最，存在一個(gè)臨界速比約等于1.0操逼色图亚洲；低于這個(gè)臨界速比時(shí)，轉(zhuǎn)速對(duì)泄漏量的影響不明顯高清在线观看国产亚洲精品；高于這個(gè)臨界速比時(shí)亚洲欧美一区第一页，泄漏量隨轉(zhuǎn)速的增大而減小，在很高的轉(zhuǎn)速下（6000r/min以上）中文字摹人，泄漏量至少減小了5.1%www.天堂.av；相同間隙下，泄漏系數(shù)隨著壓比的提高而近似線性增加十八岁禁huangse网站；相同轉(zhuǎn)速下为爱igao视频网在线观看，隨著密封間隙的減小，相對(duì)泄漏量逐漸降低日韩丝袜清纯自拍视频。