具有独立偏好的三方匹配问题

【目的】讨论3个主体集U,V,W之间的三方匹配问题,得到相关理论与算法。【方法】通过三方匹配问题所导出的一对一双边匹配问题,应用双边匹配问题的结果得到所讨论的三方匹配问题的相关结果。【结果】对于具有独立偏好三方匹配问题,给出其稳定匹配概念,并证明稳定匹配一定存在,以及给出了求解稳定匹配的算法。【结论】所讨论的具有独立偏好三方匹配问题所得到的结果与算法为三方匹配问题研究与应用提供新途径。     

Hilbert 空间中一类平衡问题变分不等式问题和不动点问题的强收敛定理及其对最优化问题的应用

在Hilbert空间中引进一种新的迭代算法,得到了一类平衡问题变分不等式问题和不动点问题的强收敛定理,所得到结果改进并推广这类问题最近的一些结果。     

广义的广义变分问题及在最优化中的应用

目的为求得广义的广义变分问题的解,并实现其在最优化问题中的应用。方法利用非线性分析及不动点方法。结果在Banach空间中得出了广义的广义变分问题的解的存在性条件,并应用此结果求得鞍点问题的解。结论重新认识了广义的广义变分问题的解的存在性,据此实现了在最优化中鞍点问题求解的应用,推广了作者和O.L.Mangasbia等人过去的相关结果。     

蚁群算法求解消防站的选址问题

将消防设施选址问题抽象成集合覆盖问题。应用蚁群算法对集合覆盖问题进行了求解。并针对点的重复覆盖问题对每次迭代的结果进行了启发式改进,消除了冗余的子集。同时采用精英策略,加速了蚁群算法的收敛速度。并将用蚁群算法得到的结果与基于贪心策略得到的结果进行了比较,效果较好。     

社会调查中关于敏感性问题调查方法的思考

对社会问题的调查,常常涉及到个人隐私或被调查人不愿正面回答的问题,采用一般的调查方法,难以获得真实结果,本文就获取敏感性社会问题真实结果的调查方法进行探讨。     

一类非可微多目标规划的改进的Mond-Weir型对偶

【目的】研究一类非可微多目标规划问题改进的Mond-Weir型对偶。【方法】分析Mond-Weir型对偶问题基础上,给出该问题的一类改进的Mond-Weir型对偶模型,利用G-不变凸性证明原问题与对偶问题之间的对偶结果。【结果】在适当条件下,得出该问题与对偶问题的弱对偶定理、强对偶定理和非极大逆对偶定 理 并 进 行 证 明。【结 论】改 进 的Mond-Weir型对偶结果可以在更弱的条件下得以证明。
     

混合均衡问题的解的存在性

主要研究混合均衡问题的解的存在性.众所周知,混合均衡问题包含许多均衡问题、变分不等式问题、最优化问题和互补问题作为特例.因此,本文结果是许多相关结果的推广和改进.     

求解随机互补问题的可微罚方法

【目的】研究随机互补问题的期望值模型。【方法】借鉴罚函数法和样本均值逼近方法求解随机互补问题的期望值模型。【结果】在适当假设下，证明了样本均值逼近问题最优解的收敛性和收敛率。【结论】所得结果为研究随机互补问题提供了新的思路。     

一个带周期边界条件的非线性特征值问题

将一个带周期边界条件的非线性特征值问题线性化,构造有界凸闭子集上的一个紧映射,利用不动点定理得出该映射的不动点,而此不动点恰好为非线性问题的解,借以证明特征值的存在性,并利用线性问题的结果得到非线性问题的相应结果。     

求解Poisson问题的区域分解和交替方向乘子法

【目的】有效求解有界闭区域的Poisson问题，得到解决这类问题的区域分解法和交替方向乘子法。【方法】用区域分解法将问题转化为用两个子区域和增广拉格朗日函数表示的极小值问题，再采用交替方向乘子法求解该问题。【结果】对算法进行了收敛性分析，并给出了此类问题的具体应用。【结论】数值结果验证了该方法求解Poisson问题的可行性。     

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.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

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.     

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。     

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…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-