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In this paper, firstly, the embeddability of near-triangular graphs on the orientable surface is studied. By using Petersen's Theorem about 1-factor, we first prove that for a near-triangulation on the orientable surface, its geometry dual graph has a 1-factor; then after a procedure of operation leaded by the 1-factor, we show that if a graph G triangulates some orientable surface S_g, then G has a near-triangular embedding in S_h for h = g,g + 1,...,β(G/2」, where β is the Betti number of G. Hence we obtain a conclusion: A near-triangulation of the orientable surface is upper-embeddable. As a generalization, a class of near-quadrangulation is studied, and similar results are obtained.
本文首先研究了近三角剖分图的可定向曲面嵌入性质,通过运用Petersen关于1-因子的定理,首先证明了对于可定向曲面上的三角剖分图,其几何对偶图具有1-因子;然后在1-因子的导向下,通过做一系列增加亏格的手术,证明了如果一个图G三角剖分可定向曲面S_g,那么G可以近三角剖分可定向曲面S_h,这里h=g,g+1,…,「β(G/2」,β是指图G的Betti数,从而得出推论:可定向曲面上的三角剖分图是上可嵌入的,作为推广,又研究了一类近四角剖分图的可定向曲面嵌入性质,并得到类似的结论。
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Considered as Fitzgerald's finest work, The Great Gatsby, written in crisp, concise prose and told by Nick Caraway, a satiric yet symphathetic narrator, it is the story of Jay Gatsby, a young American from the Midwest. Gatsby becomes a bootlegger in order to attain the wealth and lavish way of life he feels are necessary to win the love of Daisy Buchanan, a married, upper-class woman who had once rejected him.
a wafer of a moon was shining over Gatsby's house,。。。who stood on the porch, his hand up in a formal gesture of farewell:小说中的月亮总是与盖茨比相关,因为出身平凡的盖茨比妄称自己身份富贵显赫,正如月亮不仅仅从太阳那儿得到光亮,而且还是对太阳这个象征的浪漫的颠覆,空洞的言行强调了一项事实,那就是盖茨比苦心营造的优雅下忽隐忽现在是原本粗鲁的詹姆斯盖茨比。
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The corresponding diagnosable systems are characterized in terms of a graph-theoretic condition, and a series of valuable conditions on a diagnosable system is presented. And a class of diagnosable systems that have a minimum number possible of communication links (known as optimal diagnosable systems) is proposed.
得出了系统中故障结点机数不超过n-2的结论;●解决了特征问题,给出了按图论方式表述的充分必要条件;●解决了诊断算法问题,给出了一个有效的诊断算法,该算法具有线性时间复杂度和多项式诊断报文总规模的特性;目前,上述研究工作所取得的结果还没有文献报导。
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Because a class of software like Word to generate a buffer before the print files, and then transmitted to the printer, the image of a larger size, higher resolution requires a large buffer capacity, and the author of the past to help design advertising art, it Print a map generated encountered close to the situation of temporary files 300MB.
因为像Word一类软件打印之前要生成缓冲文件,再传输到打印机上,图片尺寸较大、分辨率较高时,需要的缓冲区容量也很大,笔者以前帮助广告美工出设计图时,就遇到打印一张图生成将近300MB临时文件的情况。
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Firstly, we give out a reduction way for quasilinear generalized system A〓=G , and the concept of the index κ geometrically nonsingularity, where A is singular and of smooth kernal space. By using the canonical projection mappings onto the space of ker A , a class singular pointimpasse point only owned by nonlinear generalized system is also studied and we also prove that the regular index κ quasilinear generaized system A〓=G defined on the region W is equivalent with an ODEs 〓 defined on a submanifold W〓 of the W, so we reduce the problem of quasilinear generalized system to the problem of an ODEs.
首先利用投影函数,给出了拟线性广义系统A〓=G的一种归约方法,提出了指数κ几何非奇异的概念,同时对广义系统特有的一类奇点-寂点进行了研究,证明了正则指数κ的拟线性问题A〓=G等价于在其定义域W中某一个子流形W〓上的正常微分方程〓,从而将拟线性广义系统的问题归结为常微分方程问题。
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Abundant wildlife, the state protected animals for a class of black crane, leopard,"si bu xiang ", golden eagle, eagle Gypaetus, snow leopard, the red deer, Tibetan gazelle, spotted tail, such as rods bonasia; second-class protected animals have Elaphodus chickens, frozen chickens, otters, golden cats, lynx, red deer, the swan, falcon hunting, blood pheasant, blue horse chicken, stone marten, etc.
野生动物种类丰富,国家一类保护动物有黑鹤、金钱豹、&四不象&、金雕、胡兀鹫、雪豹、大马鹿、藏原羚、斑尾棒榛鸡等;二类保护动物有毛冠鸡、雪鸡、水獭、金猫、猞猁、马鹿、大天鹅、猎隼,血雉、蓝马鸡、石貂等,三类保护动物有貂猫、黄羊、鸢、苍鹰、环颈雉等。
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Due to the complexity of the cell jitter, the NonSynchronous Tining Recovery methods are currently not mature With the emphasis being given to the Class A CBR traffic, this paper analyzes the performance of the queueing delay and cell jitter at the source node and intermediate nodes, and discusses the Source Timing Recovery at the destination node in ATM networks Firstly, this paper presents a description of the cell jitter of CBR traffic, and gives the definitions of two kinds of cell jitter regarding the Source Timing Recovery for CBR traffic Then, by using exact mathematical models and analysis methods, this paper analyzes the impact of the factors, such as the capacity of the queueing buffer, the randomness, the deterministic nature and the correlation in cell arrivals of the background traffic sources, on the queueing delay and cell jitter performance of the CBR traffic through Statistical Multiplexitng To obtain an insight into the power spectral distribution and look for better schemes for the depression and filtering of the cell jitter, within the analyses we succeed deriving the power spectrum of the cell jitter for CBR traffic Hence, not only the power spectral distribution of the cell jitter can in the frequency domain be qualitatively understood, but also can the rms (root-meansquare) value of the cell jitter be quantitatively obtained so as to more accurately measure the amplitude of the jitter In the end-to-end performance analysis of the queueing delay and cell jitter, we propose a kind of quasi-periodic cell stream model to characterize the jittered CBR traffic, and present an initial queueing analysis of the CBR traffic following such a model at a generic intermediate node Additionally, we briefly discuss the buildout/playout and Source Timing Recovery functions of the destination node Finally, regarding the Source Timing Recovery of CBR traffic, this paper systematically discusses several important principles of the cell jitter filtering and depression reported in the literature, introduces several implementation schemes of the Source Timing Recovery e.
由于信元抖动的复杂性,非同步定时恢复方法目前还很不成熟。本文针对A类CBR业务流在ATM网络源节点和中间节点的排队时延和信元抖动性能,以及在目的节点的源定时恢复问题作了较为全面的研究。首先,文中描述了CBR业务流的信元抖动,并具体地给出了两种与CBR业务源定时恢复有关的信元抖动的定义。然后,采用了精确的数学模型和分析方法,有针对性地分析了业务背景中信元到达的纯随机性、确定性和相关性以及排队缓存器容量等因素对CBR业务流经过统计复用后的排队时延和信元抖动性能的影响。为了了解信元抖动的功率频谱分布和寻求更好的抑制和滤除抖动的方法,在性能分析中,我们成功地完成了CBR业务流信元抖动的功率谱分析,使得不但可以从频域定性地认识信元抖动的能量分布特性,而且还可以定量地求出信元抖动的均方根值(rms:root-mean-square),以更为准确地衡量抖动的大小。在CBR业务流的多节点端-端排队时延和信元抖动性能分析中,我们提出了一种准周期性(quasi-periodic)信元流模型来描述感染了信元抖动的CBR业务流,并基于这一模型进行了CBR业务流中间节点的初步排队分析。
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The least that should be said is that beautiful belongs to a class of terms from which it has been chosen as much for convenience' sake as for any sense that it captures what is distinctive of the class.
至少也应该这么说,美是从属于这样一个范畴的术语,如同为了方便的原因一样,为了在任何意义上它捕捉到的这个范畴中的关键部分,美被挑选出来了。
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The least that should be said is that beautiful belongs to a class of terms from which it has been chosen as much for convenience ' sake as for any sense that it captures what is distinctive of the class.
最后需要说的是,&美丽&属于一类为了用来方便的描述某些她所能表达的与众不同的感觉而用的词。
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Green eggs with a shell of the egg is different from other nutritional content and structure of the green shell of the egg yolk than Cao Ji 8% of the large egg yolk, egg white thick, easily digested and absorbed by the body, egg yolk pigment Roche up to 13 About class (ordinary egg yolk pigment Roche for the general level 4 -5), lecithin, a living -A, B, E, amino acid content than the 5-10 times higherthanordinary eggs, the yolk of the egg ball ammonia β White and γ-globulin were higher than other kinds of chicken, the best is good tonic, Green Egg high-quality, nutritious, high-selenium, high zinc, high-PC PE, high Amino acid, high-vitamin A, E, the high non-saturated fatty acid, low-fat, low cholesterol, high Flavin light, the lightpigment αβγ and unknown immune globulin antibodiesanddiseaseresistantfactorisextremely desirable Health food, the scientists as "the ginseng eggs."
绿壳蛋具有不同于其它蛋品的营养结构和含量,绿壳蛋的蛋黄比草鸡蛋黄大8%,蛋清稠,极易被人体消化吸收,蛋黄色素可达罗氏13级左右(普通鸡蛋的蛋黄色素一般为罗氏4级-5级),卵磷脂、维生素A、B、E、氨基酸的含量比普通鸡蛋高出5-10倍,蛋黄中的氨β球蛋白和γ球蛋白均高于其它鸡种,是上等滋补佳品,绿蛋蛋品质高,营养丰富,含高硒、高锌、高卵磷脂脑磷脂、高氨基酸、高维生素A、E、高不饱合脂肪酸,低脂肪、低胆固醇、富含光黄素、光色素αβγ球蛋白和未知免疫抗体和抗病因子,是极为理想的保健食品,被科学家誉为&鸡蛋中的人参&。
- 推荐网络例句
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Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).
呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。
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The cost of moving grain food products was unchanged from May, but year over year are up 8%.
粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。
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However, to get a true quote, you will need to provide detailed personal and financial information.
然而,要让一个真正的引用,你需要提供详细的个人和财务信息。