我国企业年金发展策略研究

2012年全国企业年金基金累计结存4821亿元,较上年增长30%,显示了良好的发展势头。但是保监会2006年预测,我国企业年金规模将在2010年达到1万亿,3年多过去了,我国企业年金规模还远不足当年的预期,无论从企业年金参与率,资产比重,替代率,还是资产占资本市场比重来看,我国企业年金发展都严重不足。本文从税收优惠政策的角度分析企业年金发展不足的原因,认为我国企业年金下一步发展策略之关键就在于企业和个人缴费的税收优惠政策。     

企业年金--从制约到推进

企业年金在我国已有10多年的发展历史.从总量上看,我国的企业年金有了一定的发展,但仍存在发展缓慢、发展不平衡等问题.究其原因在于存在三大制约因素,即职工的需求不足、企业的能力和动力不足、国家的税收优惠政策不足.因此,需要采取各种战略来推进企业年金的发展.     

美英两国企业年金税收优惠政策比较及其启示

近年来,在我国企业年金作为基本养老保险制度的补充层次,一直是社会保障事业中备受人们关注的一个领域.然而不容忽视的是,迄今为止,企业年金的税收优惠问题仍是其发展道路上的"拦路虎".要想在我国更好地发展企业年金制度,我们就应积极借鉴美国英国企业年金税收优惠制度,加强国家在企业年金税收优惠方面的立法,制定并采用一整套柔性的税收优惠政策,搭建企业年金税收优惠的协同作用的框架.     

我国企业年金的税收政策及其改进建议

企业年金越来越成为个人退休金计划的重要组成部分。在我国,由于对企业年金没有太多税收优惠,企业年金规模发展较慢。本文通过研究西方发达国家对企业年金的税收政策,结合当前我国企业年金税收政策,提出了一些参考建议,希望促进企业年金的发展。     

我国企业年金的税收政策及其改进建议

企业年金越来越成为个人退休金计划的重要组成部分.在我国,由于对企业年金没有太多税收优惠,企业年金规模发展较慢.本文通过研究西方发达国家对企业年金的税收政策,结合当前我国企业年金税收政策,提出了一些参考建议,希望促进企业年金的发展.     

对我国企业年金的若干思考

企业年金是我国养老保障体系三大支柱之一,也是目前社会保障体系改革的主要目标及热点。文章从保障和改善职工的退休生活水平、应对我国老龄化危机、增强企业的竞争力和凝聚力、合理的企业纳税筹划等方面分析了我国现阶段企业年金的主要功效,并分析了年金覆盖率较低、缺乏统一的年金税收优惠政策等存在的问题,指出当前依然是我国企业年金的制度建设期和成长期,需要克服诸多障碍使其进入快速增长期,政府部门应继续加强企业年金的政策支持。     

企业年金税收优惠的国际借鉴

从世界范围看,正规的企业年金计划已经具有一百多年历史。在建立了基本养老保险制度的国家,企业年金属于第二支柱;在政府不提供养老金的国家,企业年金则属于第一支柱。我国在总结世界各国各种类型的雇主养老金、补充养老保险和职业养老金的经验之后,在十五规划中写入＂企业年金＂作为中国社会养老保险体系的第二支柱,可见其重要性。本文通过分析我国和世界发达国家企业年金的税收优惠模式及状况,借以找出完善我国企业年金税收优惠的途径。     

我国资产证券化存在的税收问题及对策建议

针对我国资产证券化中三个交易主体所存在的税收问题,完善我国资产证券化发展的税收对策应为完善资产证券化的税收法规,设置合理的税收优惠政策,界定真实销售和担保融资并完善相关税收政策。     

青岛市企业年金现状及面临的问题分析

企业年金的发展将关系到我国未来整个养老保障体系的构建和发展。本文针对我国企业年金所存在的问题，以青岛市的企业年金试点单位为例，从政府政策、企业年金经营机构、企业年金经营模式及企业年金计划设计等各个方面进行分析。     

我国技术市场税收优惠政策效果的实证研究

首先分析了技术市场税收优惠政策的作用,并对国内外文献进行综述;然后阐述我国技术市场的相关税收优惠政策,接着以北京技术市场为例,构建面板数据模型,定量测算税收优惠政策对北京技术市场发展的影响程度,研究发现北京技术市场规模对税收优惠政策的弹性系数仅为0.31;最后指出我国税收优惠政策存在的问题,并提出相关政策建议。     

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