多维空间中由稀变密不均匀网络及不同差分格式的耦合稳定

讨论ｍ维空间双曲型方程在ｘ１超平面两侧具有由稀变密的不同网格及不同差分格式的耦合稳定性。对于变量ｘ２，．．．，ｘｍ应用付氏变换，并把对偶变数视为参数，因此转变为ｘ１变量的带参数的边值问题，最后应用Ｈ．Ｏ．Ｋｒｅｉｓｓ的判别稳定性的Ｕ．Ｋ．Ｃ．条件得到一些简便的稳定性判别法则。     

多维空间变系数双曲型方程不均匀由密变稀差分逼近的耦合稳定

讨论ｍ维空间中变系数双曲型方程，在Ｘ＿１超平面两侧由密变稀网格及应用不同差分格式的耦合稳定问题．经过对ｘ＿１以外的其它变量，应用冻结系数法作付氏变换后，化为以对隅变量为叁数的初边值问题．最后应用Ｕ．Ｋ．Ｃ．条件得到一些简便的稳定性判别方法，并给出一个计算实例．     

N－Ga_（1－x）Al_xAs的低温光伏特性

报道了Ｎ－Ｇａ＿（１－ｘ）Ａｌ＿ｘＡｓ低温光伏的异常特性．在暗条件下降温的样品，其低温光伏的初始强度比受光照的样品的光伏初始强度大得多，对这两种不同初始条件，当样品加热到大约１００～１５０Ｋ时，其低温光伏强度发生跳跃．这些异常特性归因于Ｎ－Ｇａ＿（１－ｘ）Ａｌ＿ｘＡｓ（ｘ＞０．２２）中的ＤＸ中心的电荷态变化．     

混晶GaAs_（1－x）P_x：N中等电子杂质束缚激子的发光

在７７Ｋ流体静压和低激发功率密度两种不同实验条件下，对组分ｘ＝０．８８混晶材料ＧａＡｓ＿（１－ｘ）Ｐ＿ｘ：Ｎ的光致发光进行了研究。在发光谱中分别明显地出现ＮＮ＿ｉ（ｉ＝１，３）对束缚激子的发光峰。观察到压力下Ｎ＿ｘ带发光猝灭及谱带窄化。低温下，降低激发功率密度，Ｎ＿ｘ谱带移向低能量位置并且半宽变窄。实验结果表明发生Ｎ＿ｘ束缚激子从孤立Ｎ＿ｘ中心到ＮＮ＿ｉ中心的热激活转移。分析结果说明，在加压和低激发密度下，发生这种转移现象的主导机制分别是多重陷入和变程跳跃．     

Ga＿（1－x）In＿xAs＿（1－y）Sb＿y四元合金系光学性质的研究

对以ＧａＳｂ为衬底、外延生长的四元化合物Ｇａ＿（１－ｘ）Ｉｎ＿ｘＡｓ＿（１－ｙ）Ｓｂ＿ｙ（组分在ｘ＝０．０３２，ｙ＝０．９４到ｘ＝０．２６，ｙ＝０．９范围内）进行了远红外反射谱、喇曼散射、光吸收和光致发光的测量。结果给出外延层晶格振动的性质及不同温度下（８３Ｋ—３００Ｋ）四元合金的能隙，并详细讨论了能隙随温度的变化。     

复合二项K－S算子和PoissonK－S算子逼迫

引入复合二项Ｋａｎｔｏｒｏｖｉｃｈ－Ｓｔｉｅｌｔｊｅｓ算子（Ｓ＿ｒｖ）（ｘ）＝Ｓ＿（ｋ，τ）（ｘ）（τ＞０，０≤ｘ≤１），证明了当τ→＋∞时，（Ｓ＿τｖ）（ｘ）在（０，１］上几乎处处收敛于ｖ关于Ｌｅｂｅｇｕｅ测度的绝对连续部份的Ｒａｄａｎ－Ｎｉｋｏｄｙｍ导数ｆ（ｘ）．同时也证明了ＰｏｉｓｓｏｎＫ－Ｓ算子（Ｓ＿τｖ）（ｘ）＝（τｄｖ）在［ａ，ｂ］（０，＋∞）上也有类似的结论．     

Grbner基在一类成元问题中的应用

Ｆ是ｎ元多项式环Ｋ［ｘ＿１，…，ｘ＿ｎ］上以｛ｅ＿１，…，ｅ＿ｎ｝为基的自由模，ｆ＿１，…，ｆ＿ｔ∈Ｅ［ｘ＿１，…，ｘ＿ｎ］，Ｋ［ｆ＿１，…，ｆ＿ｔ］是ｆ＿１，…，ｆ＿ｔ生成的子代数，利用Ｇｒｏｂｎｅｒ基给出了一个简单算法决定Ｆ的给定元素ｇ是否属于Ｍ；如果是属于Ｍ，该算法同时给出ｇ的表示，即求得ｔ元多项式ｈ＿１，…，ｈ＿ｔ使．特别当ｇ∈Ｋ［ｘ＿１，…，ｘ＿ｎ］时，该算法能决定ｇ是否属于子代数Ｋ［ｆ＿１，…，ｆ＿ｔ］及相应的表示．     

东海鳓鱼雌雄性状比较及其鉴别

本文对在１９８５－１９８７年间舟山近岸采集的鳓鱼雌雄个体性状作了比较分析。结果表明：除了吻长、叉长／体长等指标在雌雄间有显著差异外，其它指标均无显著差异。到了繁殖早期，雄鱼的体厚、成熟系数都显著地大于雌鱼，而肝指数却显著地小于雌鱼。本文还进一步用逐步判别的方法给出了鉴别雌雄的判别函数：ｙ＿１＝－６３４．８８０５＋１３７．４８４５ｘ＿１＋９０７．１５９８ｘ＿２＋７４５．８３６３ｘ＿３ｙ＿２＝－６２３．６２９８＋１２３．６８９２ｘ＿１＋８９４．３３４０ｘ＿２＋７６６．０１６６ｘ＿３式中ｘ＿１为吻长／头长，ｘ＿２为叉长／体长，ｘ＿３为体厚／体高，用４６个样品回代进行判别，得错判率为１０．９％     

GaAs_（1－x）P_x：TeLED中深能级及其对发光效率的影响

利用深能级瞬态谱（ＤＬＴＳ）方法研究了不同发光效率的掺Ｔｅ的ＧａＡｓ＿（１－ｘ）Ｐ＿ｘＬＥＤ中的深中心，探讨深能级对ＧａＡｓ＿（１－ｘ）Ｐ＿ｘ：ＴｅＬＥＤ发光效率的影响，结果表明，发射率激活能为０．４０ｅＶ的Ｂ能级是影响发光效率的主要无幅射中心．     

同一共轭类中的可分零点

本文讨论了多项式ｆ（ｘ）∈Ｄ［ｘ］在同一共扼类中的可分零，点与中心化子Ｚ＿Ｄ（θ）之上的右线性独立元之间的关系，并且证明（ｉ）Ｚ（ｑ＿ｓ）＝Ｓ＿Ｔ，（ｉｉ）｜Ｚ（ｑ＿ｓ）｜≥（ｍ一１）｜Ｚ＿Ｄ（θ）｜．     

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-