电力市场中发电商的古诺学习行为

本文从博弈学习理论的角度,研究了不同负荷水平下有限理性的发电商进行古诺调节学习对市场的影响。案例实验表明,市场电价随负荷增长而升高,古诺均衡价格高于边际成本价格,各个发电商的古诺均衡利润高于完全竞争利润,当负荷水平较低时,相差不大,但是负荷较高时,发电商利润上涨迅猛。因此,在负荷较高时,市场管理者可以通过采取措施,抑制电价过快增长,限制发电商获得高额利润。     

浅谈行为金融理论与有效市场假说

有效市场假说是现代金融理论的重要基石,其理论基础是理性人和完全套利假定。20世纪80年代在西方国家兴起的行为金融理论,以心理学的研究成果为依据,从投资者的实际决策心理出发,重新审视主宰金融市场的人的因素对市场的影响,对有效市场假说的理性框架和完全套利进行了深刻的反思,并指出投资者的行为并非是完全理性的,套利行为也是有限的。     

有限理性视阈下农户农地流转决策行为分析

农户根据决策行为不同可分为转入农户和转出农户,本文基于农户有限理性的前提下,尝试构建数理模型,对农户转入或转出的条件进行探讨,并对其经济学意义进行分析。研究发现,农户在农地流转过程中决策行为是有限理性的,政府部门应该进一步完善社会保障体系、规范土地流转市场、着力保持宏观经济稳定,提高农户理性预期,只要外部环境能够使农户满意,农户就会选择转入或转出农地。     

发电市场不同竞争模式下发电商的策略性远期合同交易

发电商的远期合同交易会影响发电现货市场的竞争，这种策略影响关系可能会激励发电商参与远期合同交易(策略性远期合同交易)．针对不同的发电现货市场竞争模式，研究了多个非对称发电商的策略性远期合同交易问题．通过均衡分析，表明如果每个发电商进行其合同决策时认为其他所有发电商的合同交易量给定不变，则在发电现货市场Cournot竞争模式下，每个理性发电商都会进行一定数量的策略性合同交易；而当发电现货市场采用线性供应函数竞争时，发电商将失去策略性合同交易的激励．算例分析证实了理论结果．     

关于远期合同市场发电商的竞价策略研究

合同交易随着电力市场化的不断完善和风险管理的需要，呈现出越来越重要的作用.在一个规范、成熟的电力市场中，应当是实时市场和合同市场并存的，两者互为补充、相辅相成、缺一不可.因此，研究一个关于合同市场发电商的竞价策略模型就有尤其重要的意义和研究价值.文中对合同市场的发电商竞价策略进行了研究，建立了发电商竞价策略的数学模型.最后，理论分析和算例结果表明了模型的实用性.     

理性模型的综述及相对公共决策的研究

本文对理性模型做出分析和在此基础上对公共决策进行了初步探讨。新古典经济学是建立在完全理性的基础之上的。西蒙最早就这一问题提出质疑并进行了建立有限理性模型,1978年获得诺贝尔经济学奖。     

电力合约市场中零售商的策略行为研究

在电力市场中发电商利用其寡头垄断地位施行市场力以谋取超额利润,但零售商与发电商之间的远期合约可以抑制这种市场力.在两个零售商与两个发电商的电力市场中,运用博弈论,建立了零售商之间竞争发电商合约的签约博弈模型和领导者-随从博弈模型,分析了在现货市场前的合约市场中零售商主动采取合约竞标策略,提供经济激励,鼓励发电商进入合约市场,并解释了"当发电商具有市场力时,远期价格高于现货市场价格"的现象,证明了零售商这种主动合约策略行为能够实现社会福利最大化.     

关于Von Neumann理性行为公理

首次引入展望空间的基和维数的概念，并证明了在Von Neumann-Morgenstern理性行为公理下，有限随机决策中展望空间的维数至多为2。由此说明该公理体系的局限性和条件的苛刻性。     

有限理性条件下博弈方决策规则获取的粗糙集方法

经典博弈理论是基于完全理性假设成立的,有限理性理论的诞生对经典博弈理论是一个极大的冲击．该理论认为博弈方的决策能力是有限的,博弈方的决策受到各种因素的影响,因而在众多因素中获取决策规则的问题变得相当重要．论文算例给出了影响博弈方决策的因素,应用粗糙集方法,提取博弈对手的决策规则,使博弈方深入了解对手情况后,作出新的决策．     

双边交易市场中基于纳什均衡的竞价策略

随着我国电力体制改革和电力市场的发展,完全开放的电力市场将随着需求侧的开放逐渐建立.文中以纳什均衡理论为依据,通过引入发电商成本矩阵和购电商期望支付向量,建立了买卖双方多个市场主体参与竞价的双边交易机制,并利用全局搜索能力较强的遗传算法对模型进行求解.仿真结果表明:该模型实用可行并总能找到使交易总成本最小的纳什均衡策略组合,市场成员以此策略进行报价将能获得最大收益;同时,该策略能很好地反映出发电商策略投标行为对市场的影响.     

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.     

A computer generator for randomly layered structures

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

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.