一种基于Agent偏好强度的多方案选优法

在经典的投票方法中,Borda评分法很好地集结了决策者对各方案的完全偏好序,但却忽略了各方案间偏好强度的差别;Goodman-Markowitz法考虑了偏好强度,但却避免不了决策者在给定辨别力等级时的随意性.通过提出“有争议”的概念,认为偏好强度不应该是等差数列,而应该是迅速递减的数列,从而解决了Borda评分法不考虑偏好强度及Goodman-Markowitz法在给出辨别力等级时的随意性两个问题.对该方法的相关特性进行了简单的讨论,分析了无法满足Arrow提出的无关方案独立性公理的原因并提出了解决该问题的办法,同时就防策略投票问题提出了自己的思路.     

Fisher理论和多数投票法相结合的数据融合算法

针对多个特征指标的多传感器数据融合问题,将Fisher理论和多数投票法相结合进行数据融合来增加识别率。该方法首先通过Fisher理论得到多个判别函数,然后通过多数投票法继续对得到的判别进行分类得到最后的识别决策。该方法适合多个特征目标识别,计算简单。易于实现。     

联合国秘书长候选人——萨利姆

联合国秘书长的选举自10月27日开始,经过安理会多次投票,至今未获结果,出现了僵局。这是联合国历史上少见的。联合国秘书长任期为5年。按规定,新的人选应由安理会15个理事国通过秘密投票选举,候选人如果得到9票以上的赞成票,并且不被一个常任理事国否决,即可提交联合国大会任命。今年参加竞选的两位候选人,一位是坦桑尼亚39岁的外交部长萨利姆·艾哈迈德·萨利姆;另一位是已连任两届、62岁的现任秘书长、奥地利人瓦尔德海姆。据报道,萨利姆在第一轮和第八轮投票中分别获11票和8票,均遭美国否决。中国采取支持萨利姆的立场,因为他是非洲统一组织和不结盟运动国家正式提出的候选人,而且自联合国创建     

年龄相关的两种群非线性竞争系统的最优边界控制

研究一类具有年龄结构的两种群非线性竞争系统的最优边界控制问题,由Mazur定理证明了最优边界控制的存在性,并借助于法锥概念得到了最优条件.     

Wolfe线搜索下一类带误差的共轭梯度法

共轭梯度法是求解大型最优化问题的一类非常有效的方法,但在计算过程中可能会出现误差.分析了一种采用Wolfe线搜索的带误差的共轭梯度法,在误差界满足一定条件的情况下,证明了该方法的全局收敛性.     

PCG法的理论解释及在结构分析中的应用

以雅可比共轭梯度法为例,根据盖尔定理,从理论上证明了预处理共轭梯度法在一定条件下会加速,并给出了加速条件.通过预处理技术导出大型稀疏矩阵广义特征值问题求解的一种新加速方法,可提高计算的效率和稳定性.算例结果表明,对于求解大型稀疏线性方程组问题,预处理共轭梯度法及本文特征值新加速方法较传统方法更有优势.     

质点系相对于质心动量矩定理的动静法证明

应用动静法证明了质点系相对于质心的动量矩定理,证明过程简单,物理概念明确,拓展了动静法的应用范围.     

简并情况下两个对易算符的共同本征函数系的简单求解方法

算符理论是量子力学课程的重要教学内容,其中两个力学量算符的对易及其本征函数问题是算符理论中的一个难点。简并情况下两个对易算符的本征函数系问题更为复杂,很多传统教材中都没有进行详细分析和讨论。该文利用一种简单的方法证明了简并情况下两个对易算符具有共同本征函数系的结论,并提出了寻找两个对易算符的共同本征函数系的两种简单方法—交集法与线性组合法。该文有助于教师和学生深刻地领会和求解两个对易算符的共同本征函数问题。     

一种具有序区间偏好信息的群决策方法

针对方案偏好信息为序区间形式的群决策问题,提出了一种决策分析方法.首先对具有序区间偏好信息的群决策问题进行了描述;然后依据传统Borda法的基本思路,将序区间偏好信息转化为Borda数值表,根据序区间的特点确定Borda分值计算规则;依据此Borda分值计算规则给出确定每个方案总Borda分值的计算公式,并根据每个方案总Borda分值的大小来进行方案排序;最后,通过一个算例说明了本文给出方法的可行性和有效性.     

关于孤立性定理

代数体函数的第二基本定理是在不可约情况下推出的,利用分支点的估计式,证明了一个孤立性定理,然后在较宽的条件下证明了分支点定理,因此推广了重要的代数体函数第二基本定理的使用条件.     

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.     

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.     

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。     

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.     

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.