信息不对称引发的银行挤兑和风险传染模型

通过建立由银行信号引起的基于主体交互的羊群效应模型解释信息不对称导致银行挤兑发生以及风险传染的机制.研究的信息不对称主要体现在两个方面：储户不能通过银行信号准确判断银行的真实投资状况;储户不能完全获得所有其他邻居储户取款决策的信息.     

银行系统性风险度量——基于动态CoVaR 方法的分析

以测量金融机构溢出风险的条件CoVaR模型为基础,应用股价数据对我国14家上市商业银行的系统性风险贡献度及其影响因素进行测算分析.实证结果表明：银行系统性风险贡献度与其自身VaR之间并无显著线性关系,对我国银行体系而言,系统重要性银行主要是四大国有银行,尤其以建设银行、中国银行和工商银行的系统性影响最为显著,其他股份制银行的风险溢出和传染效应远小于这3家银行;银行的溢出风险ΔCoVaR、自身风险VaR水平、不良贷款率以及宏观经济波动对于预测银行系统性风险的边际贡献具有显著影响.     

基于风险溢出的股市双层风险传染模型

从风险关联网络视角出发,根据股票节点的风险溢出水平差异对其进行分层处理,提出股市风险双层传染机制,并基于网络异质性结构对传统SIRS模型提出改进,采用风险溢出效率定义感染率参数.最后,以深证300成分股作为样本数据计算模型相关参数,并进行股市极端风险传染演化仿真分析.研究结果表明：双层传染机制下股市风险传导效应更强,少数风险溢出水平较高的股票节点对风险传染的贡献远高于风险溢出水平较低的其他节点,一旦这些企业发生危机,对股市系统的冲击性和影响力都更大.     

我国银行金融机构信贷供给冲击对经济波动的影响

信贷供给是经济中的重要因素之一,对经济波动具有显著影响。在我国,银行金融机构是主要的信贷供给方,其信贷政策和措施对经济的运行产生重要影响。本文以2004—2019年的研究数据为样本,建立符号约束的TVP-SV-VAR模型进行分析,识别了信贷供给冲击对经济发展的影响。研究表明,信贷供给的变化可能改变企业和个人的借贷行为和风险偏好,通货膨胀和经济产出对经济的影响表现出较强的阶段性特征,并且信贷供给会在短期内影响经济发展。在正向信贷供给冲击的影响下,当期的货币政策处于相对宽松的状态,随后会产生周期性的调整和变化,这会促使当局采取紧缩性的货币政策。     

基于投资组合关联的金融系统性风险影响因素研究?

基于Caccioli等的金融网络模型构建了一个银行-资产网络模型来研究具有资产重叠的金融系统的风险传染机制.用金融系统发生危机(大规模破产)的概率表征金融风险的频度,用发生危机时机构实际破产比例表征金融风险的强度,并视风险频度和强度为金融系统稳定性的基本特征.通过模型模拟发现,金融系统的稳定性受到投资组合分散化程度、市场拥挤度、机构财务杠杆率、机构投资组合相似度、初始市场冲击等因素的影响.特别地,尽管持有资产种类的多样化有利于独立金融机构的运营,但过度的多样性会威胁金融系统整体的稳定.     

土地市场对城投公司信用风险传染机理

一旦土地价格及流动性发生剧烈波动,过度依赖土地市场的城投公司将产生风险传染.依据资产负债表理论从抵押品价值、资本金及流动性3个渠道探讨了土地市场波动对城投公司信用风险的传染机理,通过52个中国城投公司数据样本,运用向量自回归(VAR)和有向图(DAG)模型进行风险传染实证.3种渠道分析结果表明:地价波动对城投公司信用风险存在显著短期传染效应,经由资本金渠道城投公司融资能力产生显著影响;土地市场波动则经由流动性渠道对公司信用风险产生长期显著的放大效应;城投公司投资、收益水平及支付性风险的传染效应相对不显著.     

利用非参分位数回归模型分析金融市场的风险传染

基于市场风险的角度,采用非参分位数回归模型,结合中国、美国、英国和日本4个国家股票市场的数据进行实证分析.实证结果表明:4个国家的金融市场存在着风险传染效应,而且这种传染是非线性的;风险产生国的金融市场首先受到影响,进而再传染到其他3个国家的金融市场,而且这种风险传染对于不健全的金融市场的影响程度要大于相对比较健全的金融市场.     

资本约束、非利息业务收入与银行风险承担——基于GMM方法的实证研究

利率市场化的推进使存贷利差逐渐缩小,由此导致国内银行的业务结构发生重要的改变,而自身风险结构的改变也进一步影响货币政策的实施效果.基于2004—2014年46家国内商业银行的经营数据,采用系统性广义矩估计方法(GMM),对货币政策、银行风险承担及银行特征进行了实证研究.结果发现,不同经营结构的商业银行对风险承担机制的影响具有显著的差异,尤其是非利息业务收入占比对该机制的影响是不可忽视的.由此提出,在利率市场化的背景下,为了保证政策的有效性,货币当局应该基于银行自身的收入结构和其它一些特征变量制定差异化货币政策.     

中国大额支付系统稳健性的仿真模拟

针对中国大额支付系统的系统风险问题,基于仿真模拟数据和不同的操作风险情景,研究了中国大额支付系统在流动性冲击下的系统稳健性和系统参与者在风险冲击和风险传染
过程中的作用,并从风险管理的角度评估了系统重要性节点。结果表明,国有商业银行是最重要的风险来源,政策性银行是系统中最为脆弱的环节和主要的风险放大器,而从整体
来看,城市商业银行和农村信用社是系统中重要的稳定器。     

村镇银行设立方式与经营绩效的关系——以湖南省村镇银行为例

中国目前实行村镇银行发起人设立制度,主发起行的差异及其所设村镇银行的员工持股情况,可能对村镇银行经营绩效产生不同影响.以湖南省现有的28家村镇银行为例,以2013年上半年的数据为样本,通过不同类型村镇银行相关盈利和风险财务指标对比,分析了村镇银行的设立方式与其经营绩效的关系.研究表明,规模较大的区域内的村镇银行盈利水平与风险控制效果较好.     

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-