几个

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。

The last three joints of PБ-211 robot are controlled by symmetric valve controlling asymmetric cylinder system.

由于对称阀控制非对称缸两个运动方向上系统的开环增益及某些参数的不同，使得两个方向上的动态特性不对称，主要表现在超调量、调节时间、振荡次数和稳态误差等几个方面，这种本质上的非线性和非对称性给系统控制带来困难。

Dion Boucicault, the most prolific of Irish playwrights, had two alleged fathers, several supposed birthdates, and three wives.

迪恩·布什科是爱尔兰最多产的戏剧家之一，他有两个名义上的父亲，几个有争议的生日以及三个妻子。

There was some discussion, and two of the middle-aged women seemed to disprove, but some of the younger ones stepped down in to the starboard hull and brought up green coconuts, a small bundle of dried fishes, and two baskets, one containing sour breadfruit pap and the other dried bananas.

她们议论了一阵，两个年长的女人似乎不同意，但几个年轻女人走到右舷船身里，拿来了绿色的椰子、一小束鱼干、两个篮子，一个篮子里装着面包果的酸果肉，另一个装着香蕉干。

The main contents of this paper are asfollows: Programmed a software which is used in simulating the dynamic energyconsumption of buildings based on transferring function principle in the language ofvisual basic, at the same time compared with the traditional way of calculation ofenergy consumption in buildings to prove the correctitude of the software;Foundviable way of energy efficiency in buildings in the way of analyzing walls, windows,and many other aspect of structure of buildings, and using the software to analyzethe rate of the contribution of thermal quality to the energy consumption of buildings;Analyzed the rate of the contribution of the different weather to the energyconsumption of the existing dwelling in the way of calculating the energyconsumption in the whole year of the existing dwelling in two model cities choosefrom the region of north China and south China. Also is carrying on the contrast andviability assessments on the energy saving of the existing dwelling between northand southern region, getting the viability assessments and the conclusions inparticular data.

本文主要研究内容是：依据传递函数法原理应用Vb语言编写建筑物动态负荷仿真软件，并与传统负荷计算法进行比较，分析了程序的可靠性；从墙体，窗户及建筑结构的其它几个方面分析了建筑节能改造的一些可行性途径，并针对对建筑能耗影响较大的墙体与窗户就其热工性能的改变对能耗的影响应用程序进行了具体的分析；针对因地域性差异造成的气候差异对建筑节能措施效果的影响，就既有建筑的节能改造，分别选择华南华北地区的两个典型城市对其既有建筑节能改造前后的全年动态时时负荷进行计算，通过对比华南地区和华北地区的两个典型城市的既有建筑节能改造前后的能耗，及两城市节能改造后的节能效益，初投资回收期等方面，得出地域差异导致的气候差异对既有建筑节能改造的效果的影响的指导性结论及南北两地域既有建筑改造的量化结论和改造可行性的分析结论。

This is a first time that the problem of limit cycles bifurcating from a degenerate singular point and from infinity under the synchronous perturbed conditions is investigated.

得到了三次、五次、七次系统分别可以在无穷远点分支出7个、8个、9个大振幅极限环的结论，这几个结果是目前最好的。

Characteristics of blended threats include the following:· Causes harm: Launches a denial of service attack at a target IP address, defaces Web servers, or plants Trojan horse programs for later execution.

被混和 害虫特征包含如下几个方面：·损害原因：对个目标IP地址实施个拒绝服务攻击，损伤Web服务器，或者放上个木马程序用来稍候执行。

In order to analyze the reason for a flawed Iraqi identity, this article delaminates the internal identity of Iraq to two levels——national and sub-national, further distinguishes familial identity, religional identity and ethnic identity on the sub-national level, and studies the relations between national and sub-national identities with looking back at the momentous events in Iraqi history, consequently finds the different influences that various of sub-national identities react on the formation of Iraqi national identity and how the discriminative internal policy intensified sub-national identities, and then builds a theoretical framework with two dimensions from upwards and downwards to explain the reason for unshaped Iraqi national identity.

为了分析伊拉克国家认同没有形成的原因，文章将伊拉克内部认同在国家和次国家两个层次上进行划分，并进一步区分了次国家认同中的家族部落、宗教派系、族群这三个认同类型，然后以国家认同和次国家认同的关系为切入点，研究了伊拉克历史上的几个重大事件，发现了各次国家认同对国家认同的形成具有不同程度的影响，其中族群认同对国家认同形成的破坏作用最大；与此同时，伊拉克前政府歧视性的内部政策强化了各次国家认同，是造成伊拉克国家认同没有形成的另一个原因，从而从上、下两个维度解释伊拉克国家认同未形成原因的理论架构。

On the basis of the former researches and taking into account the practice of our country, this paper take the low period repeat loading experiment for three rigid conjunction node of steel beam and concrete wall, researching their load-bearing capacity and earthquake resistance performance under the low period repeat loading action, the main content concentrate on the following aspects:(1) Analyzing the three joint's damage shape、hysteretic curve、change of rigidity、yielding load、limit load、damage load、durability、energy dissipation capacity、the strain of the key position and the moment transferring mechanism.(2) Comparing the joint's load-bearing capacity and earthquake resistance performance among the joints with different stud bolt diameter and different connection plate thickness, researching some factor's influence on the work performance of the joint such as the high and strong stud bolt specification、connection plate thickness .

本文在前人研究的基础上，结合我国的实际情况，对3个钢梁-混凝土墙刚接节点试件进行了低周反复荷载试验，对其在低周反复荷载作用下的承载力和抗震性能进行了研究，内容主要集中在以下几个方面：(1)对3个节点试件在低周反复荷载作用下的破坏形态、滞回曲线特性、刚度变化、屈服荷载、极限荷载、破坏荷载、延性性能、耗能能力、关键部位的应变分布情况及节点核心区的受力情况进行了试验研究和理论分析；(2)比较了不同螺栓规格和不同连接板厚度的节点试件的承载力和抗震性能，研究了高强螺栓规格和连接板厚度这2个因素对节点工作性能的影响；(3)介绍了光纤光栅传感技术在土木工程领域中的应用研究现状及其基本原理；并通过对比试验，探讨了光纤光栅传感器用于土木工程检测的可行性及实现途径。

It included the big counties of Washington and Benton in the extreme northwest; seven northern counties in the Ozarks; eight counties in the Arkansas River valley below; and four in the Ouachita Mountains in the southwest.

它包括最西北端的华盛顿和本顿等几个大县、欧扎克山区的7个北部县、阿肯色河谷以下地区的8个县、西南部沃希塔的4个县。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。