生态旅游的发展及法律调控的探讨与研究

通过对自然保护区开发生态旅游的现状进行的调查，指出了我国自然保护区生态旅游目前存在一些问题：破坏环境搞生态旅游开发现象严重，缺乏相应的专业技术人才，相应的法律不完善。发展自然保护区生态旅游的措施：完善自然保护区生态旅游法规，加强生态环境的教育，加强监督与管理。     

试论我国自然保护区生态旅游的管理

自然保护区与生态旅游具有互动效应，利用自然保护区开展生态旅游已受到广泛的重视，现阶段我国自然保护区开展生态旅游在管理中仍存在不少问题，本文就如何改善生态旅游的管理进行了探讨，强调科学的管理体制和全方位的管理系统。     

山西自然保护区生态旅游资源开发研究

生态旅游作为可持续旅游的实现形式，近年来已经成为旅游业发展的趋势．自然保护区因其独特的资源优势成为开展生态旅游的最佳场所．山西省拥有丰富的自然保护区资源，在保护好现有野生动植物资源的前提下，合理地开展生态旅游不仅可以有效地促进保护区事业的发展，还可以促进当地经济发展．本文通过对山西自然保护区旅游资源现状进行分析，提出了进一步发展自然保护区生态旅游的若干对策．     

自然保护区的生态旅游规划及开发

本文从自然保护区和生态旅游的概念上分析了基于自然保护区的生态旅游规划与开发的条件和必要性,结合自然保护区规划分析了作为其生态旅游资源的现状,并对自然保护区的生态旅游规划与开发提出了一些对策。     

生态旅游与自然保护区关系的探讨

阐述了生态旅游和自然保护区的特点、意义、分析了生态旅游对自然保护区的各种影响;提出了实施生态旅游应注意的事项,以及解决自然保护区与生态旅游之间矛盾的途径。     

生态旅游地可持续旅游评价指标体系探讨--以自然保护区为例

生态旅游地可持续旅游发展评价指标体系是生态旅游理论与实证研究的重要领域．生态旅游地类型很多，自然保护区是开发生态旅游的重要地域类型之一．本文从自然保护区的特殊性出发，分八大类设置了70项评价指标，比较系统地构建了自然保护区生态旅游可持续发展的评价指标体系，并进行了实例研究。     

自然保护区生态旅游的开发与管理

本文从自然保护区的生态旅游的管理要求出发，分析了目前我国自然保护区生态旅游开发与管理上存在的问题，并提出了针对问题的管理思想与对策。     

贵州生态旅游浅议

本文阐述了生态旅游的概念，分析了发展生态旅游对自然保护区及地方经济发展的影响，并提出发展贵州生态旅游的具体措施     

自然保护区生态旅游开发研究

本文在论述生态旅游定义以及自然保护区概念的基础上,探讨了自然保护区生态旅游开发意义和措施。认为自然保护区开展生态旅游实施可持续发展战略的一种重要方式。自然保护区开展生态旅游开发要以自然保护为主,做到开发与保护并重,生态效益、经济效益和社会效益的三统一。     

扎龙自然保护区的生态旅游与可持续发展

本文结合扎龙自然保护区的生态旅游资源特点,从生态旅游的角度出发,分析了扎龙自然保护区开展生态旅游的优势、劣势、机会和威胁,为扎龙自然保护区的生态旅游的可持续的发展提出了若干对策。     

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…     

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)

正~~     

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.     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.