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．     

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。     

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。     

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     

双台河口自然保护区开展生态旅游应注意的问题

在双台河口自然保护区发展生态旅游应注意正确处理保护和旅游的关系，以系统工程原理和生态学原则开发旅游资源，加强旅游从业人员的培训，建立完善的生态旅游管理体系，狠抓生态旅游中的环境教育，充分认识自然保护区旅游业的负效应，采取切实有效的保护开发措施．     

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。     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

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-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the