浅谈加强工程造价的管理和控制

随着社会主义市场经济体制的建立与完善和改革的不断深化,工程造价领域改革的步伐也在不断地加快,原有的工程造价管理体制已不能适应社会主义市场经济体制的需要,特别是我国加入WTO之后,这种体制已不适应参与国际工程咨询市场的经营和竞争。为了适应社会主义市场经济体制和建设项目全过程工程管理的需要,合理确定和有效调控建设工程造价,提高工程造价编制水平,工程造价管理主要包括工程招投标、施工过程工程造价管理、工程成本分析几个部分     

现代化企业经济核算资料的“三性”

经济核算是一项对生产和经营活动的耗费与成果进行记录、计算、分析和比较的管理方法。它一般包括五个方面的内容:即生产成果、劳动工资、成本费用、资金和利润的核算。可见建设现代化企业、经济核算资料的准确性、及时性和完整性这三性是非常重要的。     

浅析国有企业资本经营的实质

伴随着社会主义市场经济体制的建立和发展,资本经营应运而生,本文即是从自身的感触入手,对国有企业资本经营运作提出自己的见解,以引起大家共同探讨。     

工程造价的全过程管理

随着社会主义市场经济体制改革的不断完善,工程造价领域的改革步伐也在不断地加快,原有工程造价管理体制已无法满足社会主义市场经济体制的需求,特别是在我国加入WTO之后,这种体制已不适合参与国际工程咨询市场的经营与竞争.     

仅有圈地是不够的

我国加入WTO使企业的经营环境必将发生根本性的变化,这种变化需要企业采取相应的策略调整: 第一,社会主义市场经济体制将进一步完善,加快从计划经济体制向新体制的转换与过渡,市场经济中各种运行机制和规律将直接对企业的生产经营和决策产生影响。因此,客观上要求企业必须熟悉市场     

陇南市发展农业产业化经营的对策研究

面对建设社会主义新农村的要求,陇南市如何积极调整农业产业结构,加快推进体制和制度创新,实施农业产业化经营,是目前解决农业、农村、农民问题的关键。     

加快推进农业产业化经营的重要载体：关于农村专业合作组织的若干思考

随着社会主义市场经济体制的逐步建立和农业产业化经营的不断推进,农村专业合作组织正面临着分化、重组和创新的重大抉择,把握时机、因势利导、促进专业合作组织完成这一历史性的跨越,对于提高农民的组织化程度、加快农业产业化经营步伐具有重要意义。 1 农业产业化经营呼唤农村专业合作组织 农业产业化经营的本质内     

浅析影响工程项目成本的因素

施工项目管理法是现代建筑施工企业为适应日益激烈的国际化竞争和市场竞争而建立的一种企业生产组织形式。面对社会主义市场经济的要求，项目管理的核心任务是：在施工中建立完善和完整的经济核算制度，达到有效管理和控制工程项目成本的经营目标。在此认为首先系统的认识和分析影响工程项目成本的诸多因素是很有必要的，是管理和控制好工程项目成本的前提条件。     

对统计工作存在的问题及对策的探讨

统计工作是我国经济工作的基础和组成部分。强化统计工作,对于企业生产经营乃至整个国民经济的发展都是至关重要的。我国经济体制改革的目标是建立社会主义市场经济体制。然而我国统计的现状同建立社会主义市场经济体制的要求却不相适应。因此,分析研究统计中存在的主要问题,并且针对这些问题提出相应的切实可行的对策,也就成了与社会主义市场经济体制的建立息息相关的问题。笔者试就这个问题,谈谈自己的一些粗浅认识。     

加强工程造价的全过程管理的必要性

随着社会主义市场经济体制的建立与完善和改革的不断深化,工程造价领域改革的步伐也在不断地加快,原有的工程造价管理体制已不能适应社会主义市场经济体制的需要,特别是我国加入WTO之后,这种体制已不适应参与国际工程咨询市场的经营和竞争。尤其是实行建设项目法人负责制,加大了项目法人对建设项目工程造价的责任和风险。客观上要求对建设项目实行全过程造价管理。传统的基于资源消耗的相对静态的造价确定方法不同，     

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.     

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.     

A computer generator for randomly layered structures

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

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。     

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     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.