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 known
 Identification of a class nonlinear systems with known structure 一类结构已知的非线性系统辨识 短句来源 Constrained Minimax Estimation of the Mean of the Normal Ditribution with known variance 正态分布期望的约束MINIMAX估计──方差已知的情形 短句来源 An algorithm for the determination of semigroups with a known partial structure 确定局部结构已知的半群的一种算法 短句来源 F1=75.49% and F1=75.60% results are obtained on the development and test set respectively. So far as it is known, this is the best result based on single syntactic parser in literatures. 最终在开发集和测试集上分别获得了75.49%和75.60%的F1值,此结果是已知的基于单一句法分析结果中最好的. 短句来源 When comparing with other known viruses including Chinese isolates,the two stains shared closer identity with the isolates from Indonesia,and the rates of homogeny of N and G gene were 92.1%-93.2% and 91.9%-92.1% at the nucleotide level,97.5%-98.6% and 96.0 %-96.2% at the amino acid level,respectively. 与已知的基因1型狂犬病毒相比,2株病毒与印度尼西亚从犬中分离到的2株病毒同源性最高,N基因与G基因核苷酸同源性分别为92．1%～93．2%和91．9%～92．1%,氨基酸同源性分别为97．5%～98．6%和96．0%～96．2%。 短句来源 更多
 the known
 Sufficient conditions for the oscillation of the neutral equationx(t)-P(t)x(t-τ) (n) +Q(t)x(t-σ)=0,where P∈Ct o ,∞),R),Q∈Ct 0 ,∞),R + ),are presented. The results improve the known results. 对于P∈C(犤to,∞),R),Q∈C(犤t0,∞),R+),给出了中立型方程犤x(t)-P(t)x(t-τ)犦(n)+Q(t)x(t-σ)=0,的充分条件,改进了已知的结果。 短句来源 The background content of As element of soil gained by this method was 12.3 μg/g,in accord with the known background content(12.44 μg/g). 得到As元素的背景含量为12.3μg/g,与该区已知的土壤As元素背景含量(12.44μg/g)一致。 短句来源 A comparative analysis for dissipation behaviors of nucleus 110,112In formed in 130MeV 3He+nat Ag reactions and 111In populated via 84Kr on 27A1 collisions at 890 and 714MeV suggests that nuclear dissipation strength may have an angular momentum dependence besides the known deformation and/or temperature dependence. 对130MeV3He+natAg→110,112In和890以及714MeV 84Kr+27Al→111In反应中的核耗散行为进行了一个比较分析．数据分析建议除了已知的温度和／或形变依赖性以外,核耗散强度可能对角动量也存在一定的依赖性． 短句来源 The known serotypes can be classified into respiratory symptomatic serotypes such as Conn, Iowa97, JMK, Florida, Arkansas99 and nephritic symptomatic serotypes such as M41, Holte, Gray, Australia 'T'. 已知的血清型有以侵害呼吸道为主的Conn、Iowa97、JMK、Florida、Arkansas99等和以侵害肾脏为主的M41、Holte、Gray、Australia“T”等30余种。 短句来源 The known serotypes can be classified into respiratory symptomatic serotypes such as Conn, Iowa97, JMK, Florida, Arkansas99 and nephritic symptomatic serotypes such as M41, Holte, Gray, Australia‘T’. 已知的血清型有以侵害呼吸道为主的Conn、Iowa97、JMK、Florida、Arkansas99等和以侵害肾脏为主的M41、Holte、Gray、Australia“T”等30余种。 短句来源 更多
 is known
 It is known that for any graph G with minimum degree δ,δ-1≤χ ′ c(G)≤δ. 已知的结果是对于任意简单图 G,都有 δ- 1≤ χ′c( G)≤ δ,δ是 G的最小度 . 短句来源 y = Xβ + eWhere e is a n × 1 random error vector with E(e) = 0 and Cov(e) = σ2V,σ2 >0 is unknown parameter but V>0 is known matrix, β isunknown p - dimensional parameter. y=Xβ+e其中e为n维随机误差向量，E(e)=0,Cov(e)=σ~2V,σ~2＞0，是未知参数，V是已知的对称非负定矩阵，记为V≥0，β为p维未知参数向量。 短句来源 are simply proved. In addition,the problem of parameter estimation are discussed,when the shape parameter α is known,the asymptotic effective estimation to the scale parameter λ is given as λ^=(nα-1)/∑ni=1X i,and the efficiency e n is provided by e n=1-2nα. 同时 ,讨论了Gamma分布的参数估计问题 ,在形状参数α已知的条件下 ,给出尺度参数λ的一个渐近有效估计λ^ =(nα -1) / ∑ni=1xi,其效率en =1- 2nα . 短句来源 Chapter 5 discusses the utility set distributional efficient solution when the utility function is unknown and probability distribution is known. 第五章讨论了效用函数未知,随机变量的分布率已知的情形下随机多目标规划的有效解—效用集分布有效解。 短句来源 Human leukocyte antigen(HLA) system is known as one of the most complex antigen system, which carries genetic information that approaches 1‰, and possesses polymorphisms. 人类白细胞抗原(Human leukocyte antigen, HLA)系统是目前已知的最为复杂的抗原系统之一，它携有人类遗传信息约1‰，具有显著的多态性，该系统的一些基因也是参与某些疾病易感性的重要基因之一。 短句来源 更多
 be known
 After cloning,sequencing and searching with Blast and NewCpGseek programs,the result showed that all of them were typical CpG island sequences,four fragments had 99%～100% homology to regions on human chromosome 2,7,9 and 10,respectively,but only one revealed to be known gene. 通过克隆、测序和Blast、NewCpGseek软件分析 ,发现所有的片段均为典型的CpG岛 ,有 4个片段与人 2、7、9、10号染色体上的同源性为 99%～ 10 0 % ,但只有 1个是已知的基因。 短句来源 The methodology and determination criterion for mixed phase seismic wavelet estimation were introduced under the conditions that there are no zeros on the unit circle for z transformation of wavelet and the automation of wavelet is assumed to be known. 介绍了子波的Z变换在单位园上无零点和子波自相关函数已知的条件下混合相位地震子波估计的方法原理和判别准则 ,并在此基础上提出了基于地震子波振幅谱模拟技术的混合相位地震子波估计方法。 短句来源 In the method, the cathode boundary was first assumed to be known and finite element analysis was done by ANSYS software; 该方法在假设阴极边界已知的情况下 ,采用有限元计算获得阳极边界电场分布 ,并求与实际阳极电场分布间的方差和。 短句来源 Traditional equalization, including MLSE, ZF and MMSE equalizations all need that the channel character should be known first. 传统的MLSE均衡器、ZF均衡器和MMSE均衡器均隐含着一个假设条件，那就是，信道特征—脉冲响应或者频率响应在接收端是预先已知的。 短句来源 Physical parameters of single gimbal control moment gyroscopes(SGCMGs) are often assumed to be known exactly when steering law is designed by taking gimbal servo characteristics into account. 在单框架控制力矩陀螺(SGCMG)系统操纵律的设计中,如果考虑框架伺服特性,往往假设系统的物理参数是确切已知的. 短句来源 更多

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 known
 Well known wonderfulG-varieties are those of rank zero, namely the generalized flag varietiesG/P, those of rank one, classified in [A], and certain complete symmetric varieties described in [DP] such as the famous space of complete conics. There are two well known combinatorial tools in the representation theory ofSLn, the semi-standard Young tableaux and the Gelfand-Tsetlin patterns. We also use known results about canonical bases forUq2 to get a new proof of recurrent formulas for KL polynomials for maximal parabolic subgroups (geometrically, this case corresponds to Grassmannians), due to Lascoux-Schützenberger and Zelevinsky. It is well-known that the ring of invariants associated to a non-modular representation of a finite group is Cohen-Macaulay and hence has depth equal to the dimension of the representation. As a corollary, we obtain a new proof for Roberts' well-known counterexample in dimension seven. 更多
 the known
 In the examples which have been studied so far, our semistability concept reproduces the known ones. We provide a direct computational proof of the known inclusion ${\cal H}({\bf R} \times {\bf R}) \subseteq {\cal H}({\bf R}^2),$ where ${\cal H}({\bf R} \times {\bf R})$ is the product Hardy space defined for example by R. In general, the azatryptamines did not behave exactly like their tryptamine counterparts, but the behavior of N1-benzenesulfonyl analogs was reminiscent of the known arylsulfonyltryptamines. The exact soliton solutions are given and the relation between this condition and the known results in the literature is also discussed. So the structure of attractors is clear and simple in some sense by the known result. 更多
 is known
 It is known [M4] that K?-orbits S and G?-orbits S' on a complex flag manifold are in one-to-one correspondence by the condition that S ∩ S' is nonempty and compact. When the characteristic of k is 0, it is known that the invariants of d vectors, d ≥ n, are obtained from those of n vectors by polarization. It is known thatT (A, D) tiles?n by some subset of?n. It is known [7] that dualizing a form of the Poisson summation formula yields a pair of linear transformations which map a function ? of one variable into a function and its cosine transform in a generalized sense. Implementing this point of view, Poisson Summation Formulas are proved in several spaces including integrable functions of bounded variation (where the result is known) and elements of mixed norm spaces. 更多
 be known
 In robust system analysis and robust controller design, the parameters of the nominal system and admissible perturbation classes are usually assumed to be known. In the classical formulations of the problems of design of the robust optimal controllers, the equations of the nominal plant and the weights of the permissible perturbations are assumed to be known. In this approach, the spacecraft orbit is considered to be known, and the optimization of the planning of experiments is reduced to composing the optimum sequence of zones for the performance of experiments. The components of the tensor of turbulent viscosity are assumed to be known functions of the depth of the convective zone. In problems involved with determining the stability of complex systems and in control problems, the dynamic characteristics of the turbine-type machines must be known. 更多
 It is well known that β-diethylaminoethyl diphenylpropylacetate HCl(SKF 525A) is a potent inhibitor of hepatic microsomal drug-metabolizing enzymes. However, our present study indicates that the effect of SKF 525A on these enzyme systems is actually biphasic. Sodium pentobarbital sleeping-time was used as an indirect criterion of the activity of the drug-transforming enzymes in mice and rats. The rate of disappearance of pentobarbital from whole mouse was determined to assess the effect of SKF 525A on the in... It is well known that β-diethylaminoethyl diphenylpropylacetate HCl(SKF 525A) is a potent inhibitor of hepatic microsomal drug-metabolizing enzymes. However, our present study indicates that the effect of SKF 525A on these enzyme systems is actually biphasic. Sodium pentobarbital sleeping-time was used as an indirect criterion of the activity of the drug-transforming enzymes in mice and rats. The rate of disappearance of pentobarbital from whole mouse was determined to assess the effect of SKF 525A on the in vivo metabolism of the hypnotic. The amount of pentobarbital metabolized after incubating with rat liver slices was also determined. Goldbaum's method was used for the assay. It was found that either prolongation or shortening of pentobarbital sleeping-time could occur depending upon the length of the time interval between the administrations of SKF 525A(40-80 mg/kg, ip.) and pentobarbital(60 mg/kg, ip.). When pentobarbital was administered to mice within 12 hours after SKF 525A, prolongation of sleeping time was observed. On the other hand, if the mice were treated with SKF 525A 48 hours beforehand, a shortening of sleeping time was noted. Similar results were obtained for both rats and mice receiving daily injections of SKF 525A(10-40 mg/kg/day) for 3-10 days. Further studies showed that the decrease in pentobarbital sleeping time was associated with an increase in the rate of metabolism of the hypnotic. In mice receiving SKF 525A 48 hours prior to injection of pentobarbital, the whole body concentrations of the hypnotic were found to be significantly lower than those of control mice. Furthermore, liver slices from rats treated with a dose of SKF 525A 48 hours previously metabolized more pentobarbital than slices from control animals. However, the minimal body pentobarbital levels required to maintain the mice asleep seemed to be similar in both the experimental and the control groups. This fact indicates that the change in sleeping time cannot be attributed to changes in sensitivity of the central nervous system to pentobarbital. With diethylbarbital(a drug which is not metabolized in vivo), neither sleeping time nor the rate of disappearance of the drug from whole mouse was changed by SKF 525A pretreatment. The ascorbic acid contents of rat urine and mouse liver were also determined by the method of Roe and Kuther. It was found that pretreatment of animals with SKF 525A 12-24 hours before sacrifice led to elevated excretion and higher hepatic levels of ascorbic acid. This effect of SKF 525A disappeared 48 hours after injection. These results show that the enhancing effect of SKF 525A on ascorbic acid metabolism occurs before the stimulatory effect on liver drug-metabolizing enzymes. 已知二苯基丙基乙酸β-二乙基氨基乙酯(SKF 525A)为肝微粒体药物轉化酶的抑制剂。我們以戊巴此妥鈉睡眠时間为指标,发現SKF 525A的作用是双相的。小鼠注射一剂SKF 525A(40—80毫克/公斤)后0—12小时为莉酶受抑制期,表現为戊巴比妥鈉睡眠时間明显延长;但注射后48小时,小鼠戊巴比妥鈉睡眠时間不仅不延长,反而縮短。SKF 525A的双相效应在雌雄小鼠均能看到。小鼠及大鼠經連續多次注射SKF 525A后48小时,同样也出現第二相效应。下述进一步的实驗表明第二相效应是由于肝脏药物轉化酶活性加強的結果:(1)48小时前接受过一剂SKF 525A的小鼠,戊巴比妥鈉自体內消失的速率此正常动物者明显加快。(2)不論48小时前是否接受过SKF 525A,小鼠戊巴比妥鈉睡眠刚醒时,体內催眠药含量无显著差別。(3)48小时前曾經注射SKF 525A的大鼠肝切片轉化戊巴比妥鈉的速率比正常动物肝切片者快。(4)48小时前注射SKF525A并不改变二乙基巴比妥鈉(一个在体內不經轉化的莉物)引起的小鼠睡眠时間及其自体內消失的速度。 給小鼠(或大鼠)注射相当剂量的SKF 525A后12—24小时,肝脏(及尿)中的維生素C...已知二苯基丙基乙酸β-二乙基氨基乙酯(SKF 525A)为肝微粒体药物轉化酶的抑制剂。我們以戊巴此妥鈉睡眠时間为指标,发現SKF 525A的作用是双相的。小鼠注射一剂SKF 525A(40—80毫克/公斤)后0—12小时为莉酶受抑制期,表現为戊巴比妥鈉睡眠时間明显延长;但注射后48小时,小鼠戊巴比妥鈉睡眠时間不仅不延长,反而縮短。SKF 525A的双相效应在雌雄小鼠均能看到。小鼠及大鼠經連續多次注射SKF 525A后48小时,同样也出現第二相效应。下述进一步的实驗表明第二相效应是由于肝脏药物轉化酶活性加強的結果:(1)48小时前接受过一剂SKF 525A的小鼠,戊巴比妥鈉自体內消失的速率此正常动物者明显加快。(2)不論48小时前是否接受过SKF 525A,小鼠戊巴比妥鈉睡眠刚醒时,体內催眠药含量无显著差別。(3)48小时前曾經注射SKF 525A的大鼠肝切片轉化戊巴比妥鈉的速率比正常动物肝切片者快。(4)48小时前注射SKF525A并不改变二乙基巴比妥鈉(一个在体內不經轉化的莉物)引起的小鼠睡眠时間及其自体內消失的速度。 給小鼠(或大鼠)注射相当剂量的SKF 525A后12—24小时,肝脏(及尿)中的維生素C含量比对照动物者显著增加。但在給药后48小时,此作用即已消失。可見SKF525A对动物体內維生素C合成的促进作用出現在对肝脏莉物轉化酶的刺激作用之前。 In this paper author develop the Stodola iteration method of calculating the 本文把斯托杜垃(Stodola)渐近法推广,用来计算考虑剪切变形后,变截面樑的一阶及二阶弯曲振动,得到振动弹性线后,应用瑞利(Rayleigh)法求得频率。由于计算二阶振动时,需对一阶部份振型及弯矩“清除”,在文中导出了计入剪切变形后振型及弯矩的正交关系式。同时对一阶振型及弯矩一併进行“清除”,使收敛迅速。当不计切力影响的弯曲振动频率pb已知,而仅要求出切力对频率的影响,不要求振动弹性线。则可简便地由下式求得:式中p_s为只计切力作用的振动频率。 ~~ 在任意相邻两个接收点各种校正条件相等的情况下,由公式t=1/v××(x_i~2-2xoxi+4h~2)~(1/2)可以导出下列方程组:共中A,B,C,…,G是常量;X_i=v_2,Y_i=xo,Z_j=h_2。 v——岩石中的地震波速度, h——爆炸点到界面垂距的平均值, xo——对应t_(min)的横坐标。解上面方程组便求得v,h,xo,。已知v,h,xo,利用交点法可求得界面上任意点A的坐标表达式: zA-Z0/2=-x0/Z0(xA-x0/2), ZA/Z0=(XA-(i+1)△x)/(x0-(i+1)△x) 解此方程组便得到界面上任意点的坐标(zA,xA)。此外,利用椭圆法也可求得下列方程组: 解此方程组,也可求得界面上点的坐标。若界面上各点坐标已知,把已知参量送到机器里,便可自动描绘出反射界面。现代电子计算机的出现和使用为各种生产的自动化开辟了广阔的道路。同样,野外地球物理探矿的生产自动化也是目前所迫切需要的。本文试图讨论关于地球物理探矿中反射波地震界面自动勾制的数学原理。根据这一原理,电子计算机的设计和制造家们不难设计和制造出为此用途的专用电子计算机——数字机和模拟机,也不难根据这一原理编成解题程...在任意相邻两个接收点各种校正条件相等的情况下,由公式t=1/v××(x_i~2-2xoxi+4h~2)~(1/2)可以导出下列方程组:共中A,B,C,…,G是常量;X_i=v_2,Y_i=xo,Z_j=h_2。 v——岩石中的地震波速度, h——爆炸点到界面垂距的平均值, xo——对应t_(min)的横坐标。解上面方程组便求得v,h,xo,。已知v,h,xo,利用交点法可求得界面上任意点A的坐标表达式: zA-Z0/2=-x0/Z0(xA-x0/2), ZA/Z0=(XA-(i+1)△x)/(x0-(i+1)△x) 解此方程组便得到界面上任意点的坐标(zA,xA)。此外,利用椭圆法也可求得下列方程组: 解此方程组,也可求得界面上点的坐标。若界面上各点坐标已知,把已知参量送到机器里,便可自动描绘出反射界面。现代电子计算机的出现和使用为各种生产的自动化开辟了广阔的道路。同样,野外地球物理探矿的生产自动化也是目前所迫切需要的。本文试图讨论关于地球物理探矿中反射波地震界面自动勾制的数学原理。根据这一原理,电子计算机的设计和制造家们不难设计和制造出为此用途的专用电子计算机——数字机和模拟机,也不难根据这一原理编成解题程序,在通用电子计算机上找出问题的解答。 << 更多相关文摘
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