丹霞山风景区游道系统研究——以丹霞景区为例

韶关丹霞山丹霞景区的游道系统分类以观赏类型为主;用卡口法调查游道人数,发现高峰期游道人数超过理论值;实际调查游道服务设施,其休憩设施合理,保洁设施不足;调查游客兴趣指数,发现游道拥挤程度与游客对景点的兴趣正相关。     

安徽省山岳型旅游地开发评价研究

以安徽省的黄山、九华山、齐云山和天柱山四座名山的旅游资源和现有开发水平为基础，建立山岳型旅游地评价模型：在专家咨询的基础上进行评价，并说明评价结果与评价因子的匹配关系，提出相应的改进措施，以加速安徽山岳型旅游地的进一步开发。     

Logistic自记忆模型在国民经济预测中的应用

运用改进单纯型法、Logistic自记忆模型对国民经济进行预测,并与钟建生等的预测结果进行比较.结果表明:改进单纯型法优于线性变换法;Logistic自记忆模型优于Logistic模型.该研究为各行各业的预测提供了一种新的思路和方法.     

中国居民旅游消费行为研究

文章利用计量经济分析,对1994年到2005年国内旅游消费收入数据进行了分析,将线性模型做了改进,揭示了影响我国旅游消费行为的基本要素,并相应地提出了建议.     

改进层次分析法在旅游资源模糊综合评价中的应用研究

根据层次分析法的原理,结合旅游资源评价指标体系,建立层次结构模型.该模型采用三标度法间接地构造了判断矩阵,简化了专家判断的难度,增强了判断矩阵的逻辑性,进行层次排序及一致性检验,获得了满意的结构.结果表明,应用改进层次分析法进行旅游资源优劣评价是一种新颖、科学、简便的方法.     

山地旅游省区旅游经济时空分异及其驱动力演化——以贵州省为例

选取贵州省为研究样本,构建评价指标体系,运用改进熵值法、空间探索性分析(ESDA)、空间回归模型等方法,借助Open GeoDA、ArcGIS等工具从时空两个视角分别探究贵州省旅游经济时空演化特征以及驱动机制.研究发现：1) 2009年－2018年贵州省各市州间旅游经济差异明显且总体差异上有扩大趋势,旅游经济发展非均衡性格局特征明显.2) 整体上贵州省东南部各州市旅游经济发展优于西北部地区,空间结构实现了从“贵阳－黔东南”双核结构向“贵阳”单核结构的转变,贵阳市“一枝独秀”的发展趋势日益凸显.3) Moran's I为正且随时间推移呈现出波动下降的演变趋势,局部自相关随着时间的变化,H-H型的市州数量变少,L-L型市州数量先增后减,L-H型数量从无到有,旅游经济发展表现出离散型发展趋势.4)旅游资源、接待能力、交通条件、科技创新、政府投入、人力资源和经济水平对山地省区旅游发展均具有显著的驱动作用.空间回归模型SLM检验发现,政府投入对区域旅游经济发展的调控力表现最为强劲,人力资源、旅游资源和经济水平等动力因素保持持续正向驱动,科技创新助推智慧旅游建设由负转正,交通条件因区域协作不充分转为负向相关性.     

基于优化灰色-马尔可夫链的河南省旅游总收入预测

以原始序列的一阶累加生成序列与其模拟值的误差平方和最小为准则建立优化GM(1,1)模型,然后对优化GM(1,1)模型的预测结果进行了马尔可夫链的改进.最后选取2003—2013年河南省旅游总收入建立基于优化灰色-马尔可夫链的预测模型,并对2014—2016年河南省旅游总收入进行了预测,为旅游预测提供了一种新的研究思路和方法.     

西藏乡村旅游生态足迹模型构建

基于国内外关于生态足迹、旅游生态足迹的研究趋势以及在生态效率测评方面的应用现状,对旅游生态足迹在乡村生态旅游地生态效率测评中的可行性进行了分析,不同类型的乡村生态旅游目的地的旅游生态足迹模型不尽相同.文章根据西藏乡村生态旅游发展实践,总结出了目前乡村生态旅游目的地的城郊型、名村名镇型、特色民俗民风或民族文化型、自然遗产型、农业生态景观型等类型,并从资源消耗部分与废弃物消纳部分两个方面对几种典型类型的目的地旅游生态足迹模型进行了尝试性的构建,以期为后续的西藏乡村旅游目的地生态效率、经济效率测评工作提供理论依据.     

基于单向神经网络的城市旅游路线决策支持模型

对陌生旅游城市而言,旅游路线及其路况信息是旅游者出行决策的一项关键因素,也是决定旅游者旅游动机的重要客观条件.提供随机旅游路线决策支持是辅助旅游者规划旅游方案的一种智能化方法.提出了一种基于单向神经网络改进的智能随机旅游路线决策支持模型.将旅游景点分类并编码子类元素景点,调用均匀分布函数随机数发生器生成随机数智能选取旅游景点,同时遍历景点排列组合秩序确定所有旅游路线.通过单向旅游路线神经链模型传输冒泡获得最大动机迭代作用值,以此确定最佳旅游路线,同时提供可行的辅助决策支持方案.以郑州市内景点路线规划为算例进行研究,结果表明,所建模型能够智能规划旅游路线并确定最佳方案,为旅游者出行提供辅助决策支持.     

改进模拟退火算法在旅游路线定制中的应用

旅游路线定制已成为提高旅行体验的重要举措之一,为解决新游客在陌生城市旅游时的路线定制问题,在考虑景点距离、旅游消费和游客出行时间等约束条件下,建立了以旅游效用值为目标函数的旅游路线定制模型。为了避免模拟退火算法出现冗余迭代,陷入局部最优,提出一种改进模拟退火算法来求解旅游路线定制模型。该改进算法通过混沌寻优确定初始温度避免迭代冗余;通过对当前最优解进行混沌扰动来动态控制搜索步长,跳出局部最优;并用方差判定准则来作为搜索停止条件。最后,以广西桂林市的旅游景点为例对改进算法进行了验证。实验结果表明,该改进算法不仅加快了模型的运行速度,而且更容易寻得全局最优解,为游客提供了更准确合理的旅游路线。     

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.     

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.     

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.     

A computer generator for randomly layered structures

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

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.     

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