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The joint effect of active and reactive power on the voltage stability of a typical power system was considered by analysing the two parameter bifurcation problem related to nonlinear oscillation phenomena. Numerically, as the active power P1 increases, the Hopf points get closer and eventually coincide at P1=1.455 43 the cyclic fold curve gets closer and closer to the Hopf curve and finally intersects the Hopf curve at a singular point the period-doubling points also get closer and finally coincide at P1≈0.65. The stability behaviour is pre-determined using the normal form approach near the limit point of the Hopf curve. Hence, in the power system attention should be paid to both the consumption of active power and the decrease in the reactive power to prevent nonlinear oscillations. A controller can be designed to absorb some active power and to avoid the nonlinear oscillations that damage the system components.

针对一个典型的单机无穷大电力系统，通过分析系统的双参数分岔的非线性振荡现象，综合考虑有功和无功功率对电压稳定性的影响数值分析表明，随着有功功率的增加，电力系统的Hopf点越来越靠近，最终合为一点在P1=1.455 43处同时圈折cyclic fold 曲线也越来越靠近Hopf曲线，并在Hopf曲线的稳定与不稳定临界点处与Hopf曲线相交倍周期分岔点也随着越来越靠近，最终在P1≈0.65 合为一点应用正规形理论方法，初步确定了Hopf曲线极限点附近的稳定性态因而，电力系统应注意让负荷利用有功功率，减少无功功率的产生以防止非线性振荡另外，可以设计一个稍微吸收网络的有功功率的控制器，以避免因周期振荡而造成电力系统仪器的损坏或电压崩溃

Lawrence martyr , 10 august : the monthly recurrence known as the new moon with the old moon in her arms : the posited influence of celestial on human bodies : the appearance of a star 1st magnitude of exceeding brilliancy dominating by night and day a new luminous sun generated by the collision and amalgamation in incandescence of two nonluminous exsuns about the period of the birth of william shakespeare over delta in the recumbent neversetting constellation of cassiopeia and of a star 2nd magnitude of similar origin but lesser brilliancy which had appeared in and disappeared from the constellation of the corona septentrionalis about the period of the birth of leopold bloom and of other stars of presumably similar origin which had effectively or presumably appeared in and disappeared from the constellation of andromeda about the period of the birth of stephen dedalus , and in and from the constellation of auriga some years after the birth and death of rudolph bloom , junior , and in and from other constellations some years before or after the birth or death of other persons : the attendant phenomena of eclipses , solar and lunar , from immersion to emersion , abatement of wind , transit of shadow , taciturnity of winged creatures , emergence of nocturnal or crepuscular animals , persistence of infernal light , obscurity of terrestrial waters , pallor of human beings

显示出不同程度之生命力的缤纷色彩白浅黄深红朱红银朱诸星之亮度一直包括到七等星以等级标志的诸星之大小诸星的位置御夫座沃尔辛厄姆路172大卫的战车173土星光环螺旋星云凝固后形成有卫星的恒星群两重大阳相互依存的旋转运动伽利略西蒙马里乌斯174皮亚175勒威耶赫歇耳加勒176等人各自独立地同时所做的发现波得和开普勒所尝试的距离的立方与回转次数的平方的体系化177多毛的众彗星178那几殆无限的被压缩性，以及自近日点至远日点那广漠的远心的重返大气层的椭圆轨道陨石的恒星之起源年纪较轻的天体观测者诞生的那个时期火星上所出现的"暗波"现象179每年在圣劳伦斯节殉教者，八月十日前后降落的陨石雨每月都发生的所谓"新月抱旧月"现象180关于天体对人体的影响的假定威廉莎士比亚出生的时期，在斜倚却永不没落的仙后座那三角形上端，一颗不分昼夜散发着极亮光彩的星辰一等星出现了181这是两个无光死灭了的太阳因相撞并汞合为白热体而形成的灿烂的新太阳大约在利奥波德布卢姆出生时，出现在七星花冠星座里而后又消失了的一颗同一起源亮度却稍逊的星宿二等星182还有约于斯蒂芬迪达勒斯出生时，出现在仙女座中之后又消失，小鲁道尔夫布卢姆出生与夭折数年后出现于御夫座后又消失，以及另外一些人出生或去世前前后后出现在许许多多其他星座中而又消失了的假定是同一起源的实际存在或假定存在的星斗183 。

Missirlis in article [1]. At the same time, a sufficient condition for convergence of the PSD method is given to be compared when the coefficient matrix A of the linear system Ax = b is a symmetric, positively defective matrix. In §3.2, an example is given to state that the range of our sufficient condition is wider than theorem 3.3 of article [1]. On the other hand, following a.n analogous approach of [14] and starting the functional relationshipwe have a perfect analysis for the PSD method to converge and optimum valves for the involved parameters under different conditions.Under the assumptions that A is a consistent ordered matrix with nonvanishing diagonal elements and the eigenvalues of the Jacobi matrix of A are real,we get necessary and sufficient conditions for the PSD method to convergence.The result is equal to theorem 1 of article [9].Under the same condition, we can see the optimal parameter and of corresponding spectral radius of thePSD method in [8]:(2)When A is a consistent ordered matrix with nonvanishing diagonal elements and the eigenvalues of the Jacobi matrix of A are imaginary or zero,we get necessary and sufficient conditions for the PSD method to convergence.In chapter 3, the optimal parameter and of corresponding spectral radius of the PSD method are given by table 3.3. Moreover, under the assumption 0

Missirlis在文献[1]中定理3.3的不准确，同时给出了当线性方程组Ax=b的系数矩阵A为对称正定阵时，PSD迭代法收敛的一个充分条件与之比较，并且在§2.3中用实例说明了对于一部分矩阵而言本文得到的充分条件广于[1]中定理3.3的充分条件；另一方面，按照文献[14]的方法，我们从PSD迭代法的特征值λ与其Jacobi迭代矩阵B的特征值μ的关系式：出发，在不同条件下对PSD迭代法的收敛性和最优参数以及最优谱半径进行了完整的分析：(1)在系数矩阵A为(1，1)相容次序矩阵且对角元全不为零，其Jacobi迭代矩阵B的特征值全为实数的条件下，给出了PSD迭代法收敛的充分必要条件，此结果与[9]中的定理1等价，此时最优参数及最优谱半径由[8]得：(2)第三章表3.3中给出了，当系数矩阵A为(1，1)相容次序矩阵且对角元全不为零，其Jacobi迭代矩阵B的特征值全为纯虚数或零时的PSD迭代法的收敛范围和最优参数，并且我们可以得到当0

Compared to the paper-based testing methods the on-line examination system can reduce the energy and financial powers that teacher and school should offer,also can save testing space that would be needed.

网上考试方式的提出，很大程度上减少了老师与学校考核学生学校情况所需付出的精力与财力，同时也可以更好的提高学生考试成绩的真实性。

It seemed to me that the roots of the problem were these: the White House staff had too little experience in, and too few connections with, Washington's established power centers; we were trying to do too many things at once, creating an impression of disarray and preventing the people from hearing what we had actually accomplished; our lack of a clear message made otherwise minor issues look as if I was governing on the cultural and political left, not from the dynamic center, as I had promised; the impression was being reinforced by the one-note Republican attack that my budget plan was nothing but a big tax increase; and I had been blind to the considerable political obstacles I faced.

我觉得，问题的根源似乎有这么几个：白宫工作人员与华盛顿早已确立的权力中心打交道的经验太少，与它们建立的联系也过少；我们试图同时开展很多计划，让人觉得没有秩序，使人民无从得知我们实际取得的成绩；我们传达的信息不够明确，在一些别的方面较小的问题上，我显得是站在文化及政治左派的立场来管控，而不是像许诺过的那样，走具有活力的中间路线；共和党一成不变的抨击强化了这种印象，他们说我的预算方案只不过是一个大幅增税的方案；而且我没有看到自己所面对的不小的政治障碍。

And by applying the linear dispersion relation of wave, all the properties of wave refraction including wave rays, constant phase lines, phase function and crest lines etc., can be expressed in explicit functions. By introducing an orthogonal curvilinear coordinate along the wave ray and the constant phase line, and with an estimated scale factor, the refraction coefficients along any wave ray can then be determined. The present results are verified by ordinary wave ray theory and some previous numerical results.

就此特例情况在波浪的线性分散关係的应用下，前进波浪折射现象的整体特性，包括波向线、等位相线、位相函数与波峰线皆被导述出明確显然的函数表示；同时引入由沿著波向线与等位相线所构成的完全符合波浪折射几何通性的正交曲线座標，求出其尺度因子后，由能通量守衡原则定出沿著任一条波向线上的折射係数；並由之对往昔纯依两相邻的波向线间的几何类比所给定的折射係数给予导証之。

It also offers graduate programs, in the following areas of specialization: cellular/molecular biology (i.e. molecular genetics, molecular evolution), organismic/environmental biology (i.e. aquatic biology, genetics, physiology, parasitology, microbiology, and ecology), and exercise science.

该系同时提供下列专业领域的研究生项目：细胞与分子生物学（例如分子遗传学，分子进化），有机体与环境生物学（例如水生生物学，遗传学，生理学，寄生虫学，微生物学，和生态学），和运动科学。

At the same time, One of the JIT (Just-in-time) production management methods, Kanban system, which was mass production and flow line oriented and prevailed in Japan in 1980s, has been further developed. CONWIP (CONstant Work-In-Process) as the alternative of Kanban put forward by Spearman et al. in 1990s has shown its application potentiality in non-batch manufacturing environments.

同时，八十年代在日本兴起的面向大批量流水线生产的准时化(JIT-Just In Time)管理与控制方法Kanban系统得到进一步发展，Spearman等于九十年代提出了准时化生产管理与控制方式-CONWIP(CONstandWork-In-Process)，作为Kanban的改进方法，它在非批量生产企业有很大的应用潜力。

Furthermore, the paper presents a line oriented locating algorithm for fast locating triangles, which has the advantage of unique path and steady operation compared with other locating algorithms.2 Applying the theory of Constraint Delaunay Triangulation, the paper propounds the dynamical algorithm for constructing CDT, which insist that the constraint segments be inserted into the triangulation as soon as possible on the condition that they have been known already.

同时提出了快速定位三角形的直线方向定位算法，该算法与一般方向定位算法相比，具有搜索路径唯一，运行稳健的特点。 2应用约束Delaunay三角网理论，提出了构建CDT的动态算法，提出在约束条件已知的情况下，应尽早嵌入约束边。与传统构建CDT的"两步法"相比，具有速度快，点集可以动态扩充的优点。

When Christ overcame the world on the cross, He made you an overcomer too.

亲爱的弟兄姐妹们，当世人将耶稣钉十字架，我们也同时与祂一起钉十字架；当耶稣在十字架上征服了世界与罪恶的势力，我们也分享祂的得胜，得以胜过这世界和罪恶的权势。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。