BOT项目公司外汇风险的会计管理

BOT项目融资模式作为一种新型国际投融资方式,目前已被广泛应用于发达国家和发展中国家的基础设施建设当中.BOT项目公司项目融资活动中的货币风险主要是指外汇风险.本文通过对BOT项目公司外汇风险的会计管理研究,提出BOT项目公司外汇风险的预测方法及防范与管理的相应措施.     

项目融资谨防国际政治风险

项目融资作为一种新型的融资方式,以其项目导向、有限追索、融资国际化等特点,在大型工程项目,特别是基础设施项目建设中发挥着重要作用。实践表明,其成功的关键在于合理的风险分担和有效的风险管理。项目融资的特点之一就是融资的国际化,这就决定着它必然存在着政治风险,如战争与社会不稳定、国有化等。目前对于政治风险的研究已经引起人们的重视,从实践看,     

浅论在西部大开发中运用项目融资方式进行基础设施建设的必要性和可行性

项目融资作为一种融资方式，是专为建设周期长，资金需求量大，风险大的基础设施建设以及资源开发项目设计的。将这种融资方式应用到西部大开发的基础设施建设中，不但可以为西部带来大量的资金，也可以引进国外先进的管理和经营技术，有助于提高基础设施项目的建设效率，降低了项目建设的风险，也为政府节约了大量资金。     

项目融资中的商业风险种类与控制

近年来中国工商银行利用项目融资的方式为许多大型项目建设提供资金支持,随着我国加入WTO,采用项目融资的融资方式会越来越多.为了安排项目融资,必须对项目进行风险分析,对有关的风险因素做出控制.在此,浅析项目融资中的商业风险种类与控制.     

项目融资的优势和风险分析

项目融资是近年来国际上发展较快、应用较多的一种融资方式，其在我国的运用也越来越广泛。因此，对项目融资具有的优势及其存在的风险性进行深入的分析，以确保这种融资方式的正确运用就显得非常重要。     

我国高速收费公路项目融资的风险及其防范

定性分析了目前我国高速公路项目融资存在的主要风险，对融资风险的监控进行了理论上的定量描述，最后结合我国实际情况，提出了担保、保险、互换、期权、合约等一系列项目融资风险控制途径。     

高速公路BOT项目融资的风险及规避

BOT是私营企业参与基础设施建设,向社会提供公共服务的一种方式。文章阐述了高速公路BOT融资项目的优势,分析了高速公路BOT融资项目的风险及风险规避措施和方法。     

项目融资中风险分担的优化模型分析

项目融资是一种创新的融资模式,是适用于基础设施项目的一种重要筹资手段.由于项目融资的有限追索特征,如何进行风险分担成为项目融资的关键.对于项目融资中的各类风险,提出了以风险溢价作为参与方的风险分担衡量标准,分别就线性与非线性情形设计了优化模型,并得出了各自的最优风险分担量.     

项目融资风险评估 --引入动态分析的定量评估

项目融资这种新型的资金筹集方式有利于改变我国建设项目资金紧张的局面，但项目融资也存在巨大的风险，需要对风险加以管理，风险评估是风险管理的重要步骤，通过对风险进行定量评估，掌握风险发生的概率、可能性和大小，为风险控制决策的实施提供依据。     

企业融资风险来源的期权分析

融资风险是企业财务中所面临的主要风险之一，汇率和利率的频繁波动，加剧了企业的融资风险。本文从分析股权融资和债权融资的期权特性出发，通过研究两种融资方式及其融资规模与看涨期权价值之间的相互关系．揭示出企业的融资风险主要来源于企业总资金投资收益率、资本结构和负债资金成本方面。     

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.     

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.     

A computer generator for randomly layered structures

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

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to