栅阵列排序的一个有效算法

栅阵列排序问题已被证明是一个ＮＰ一完全问题，该文提出一个新的启发式算法。该算法通过建立层函数的概念，将栅阵列的排序问题转化为求层函数的最小值的优化问题。算法的时间复杂度为Ｏ（ｎｘｐ３），其中ｎ为线网的个数，ｐ为主栅的个数。     

构造二叉树的一个算法

给出一个算法，该算法输入一棵二叉树的前序遍历和中序遍历的结点序列，构造出该二叉树，该算法具有Ｏ（ｎ）时间复杂度，是解决该问题的最优算法，其中ｎ为二叉树的结点数     

层次化结构的FPGA装箱算法

新型的现场可编程逻辑门阵列(FPGA)一般采用层次化结构,这种结构有利于提高资源利用率和布通率,与平面结构相比,层次化的设计流程需要进行基本逻辑单元LE的装箱(packing)操作.提出了一种新的FP-GA装箱算法,可以减少装箱后可配置逻辑单元(CLB)外部的线网数,进而达到减少布线所需的通道数.该算法与以前的算法相比,线网数减少25%以上,布线通道数减少9.9%以上.算法的时间复杂度仍然是线性的.     

反链在正则三值逻辑函数个数计算中的应用

正则三值逻辑函数个数的计算十分复杂，本文将这一问题与ｎ维三元偏序集Ｅ＾ｎ以及（１，２，．．．，ｎ）的幂集中反链的计算联系起来，得到了两个有用的计数公式ㄧＦ（ｎ，Ｒ）ㄧ＝ㄧＥ（ｎ）ㄧ和ㄧＦ（ｎ，Ｍ）ㄧ＝ㄧＮ（ｎ，Ｃ）ㄧ＋２，从而为解决这一问题提供了一种新的途径。     

逻辑堆与树排序

树排序算法是堆排序算法的变体，本文给出了逻辑堆的结构并将其应用于树排序算法中使得树排序算法的最坏复杂度由原来的４ｎｌｏｇｎ＋Ｏ（ｎ）降低到２ｎｌｏｇｎ＋Ｏ（ｎｌｏｇｌｏｇｎ）＋Ｏ（ｎ），接近于最优堆排序算法（复杂度为ｎｌｏｇｎ＋ｎｌｏｇｌｏｇｎ＋Ｏ（ｎ），并且对几乎已有序的输入，算法的复杂度为Ｏ（ｎｌｏｇｌｏｇｎ），这在ｎ＜２１８的实际应用中基本保持了原树排序算法的优势．     

凸规划的一个内点算法

对于含线性约束的凸规划问题，本文给出了一个内点算法，并且证明了算法经过Ｏ（ｎ￣（０．５）｜ｌｎε｜）步迭代后，原始一对偶间隙必小于ε，整个算法的复杂度为Ｏ（ｎ￣（３．５）｜ｌｎε｜）．特别的，如果目标函数为凸二次函数或者线性函数，则得到相应的多项式算法，其算法复杂度为Ｏ（ｎ￣（３．５）Ｌ），其中Ｌ为相应问题的输入长度．ε取做２￣（－Ｌ）．     

寻找最小生成树的度优先算法

利用Ｋｒｕｓｋａｌ和Ｐｒｉｍ算法的优点，从图的每个顶点的度数入手，采取删除某些无用边的思想方法，给出了一个寻找最小生成树的算法。算法的最坏复杂度为Ｏ（ｍ－ｎ）ｌｏｇｍ），平均复杂度为Ｏ（（ｍ－ｎ）ｌｏｇｎ），就复杂度的常数因子而言，均优于Ｋｒｕｓｋａｌ算法与ｋｉｍ算法，其中ｍ为图的边数，ｎ为图的顶点数。     

一种新的二维Capon算法的研究

在传统Capon算法的基础上，提出了一种新的基于3个正交均匀直线阵的二维Capon来估计信号的二维DOA，利用其中一个线阵来组合其他2个线阵分别估计的一维DOA，将复杂的二维处理问题转化为简单的一维问题，大大降低了算法实现的复杂度，改善了DOA的估计性能。仿真结果证明了该方法的有效性。     

求解框式约束下凸二次规划问题的内点算法

对于框式凸二次规划问题给出了一个内点路径跟踪算法,该算法的迭代复杂度为Ｏ（√ｎＬ）,每一步近代所需计算量为Ｏ（ｎ＾３）,其中ｎ为变量个数,Ｌ为问题的输入长度。     

解Routh-Hurwitz问题的一个快速无除算法

本文给出了一个快速的无除算法来解决n次整系数多项式的Routh—Hurwitz问题，其中多项式是无平方的，首一的．该算法的复杂度为O（n^2），在算法中涉及到的整数最多有O（nlognc）位，其中c是Bezout矩阵中元素模的上界．为了强调算法的稳定性问题，本文只使用精确的算术运算．     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…