沈阳市城市景观演化及其驱动因素分析

分析了沈阳市50年代、70年代、80年代和90年代城市景观及其演化情况,并分析了沈阳市城市景观发展演化的驱动因素。认为城市景观的演化是一个长期复杂的动态化过程,是各种因素综合作用的结果,直接的因素主要有经济体制和决策因素、工业发展、人口增加及城市规划的指导思想等。     

城市群体结构及其演进

城市群形成和发展的本质过程和直观表现是城市群体结构或城市群形态结构产生、发展到成熟完善的过程。文章从城市群体结构的概念入手,研究了其基本型式和结构划分的思路,概括了四圈层空间结构模式,即核心首位城市带、城市组群发育带、城市个体分布带、城市群腹地带。分析了其结节性与均质性、网络性、功能性的特征,并对城市群体结构发展动力、阶段及特征加以理论概括。以城市群演化为基点,对城市群体形态结构、类型和演化规律予以阐述,归纳出城市群体结构和城市群形态类型演化的相关模式。     

Comparing methods for analysing mortality profiles in zooarchaeological and palaeontological samples

In this study, I examine three methods that are currently used for comparing mortality profiles from zooarchaeological and palaeontological samples: (1) histograms with 10% of life‐span age classes; (2) boxplots showing tooth crown height medians; and (3) triangular plots of the proportions of young, prime and old animals. I assess the advantages and disadvantages of each method using data collected on two samples of Northern Yellowstone elk (Cervus elaphus nelsoni) with known, or cementum annuli‐determined, ages at death. One sample was hunted by wolves (n = 96), and the other was hunted by recent humans using rifles (n = 226). I tested each method with the known or cementum annuli age distributions and with age estimation techniques appropriate for archaeological assemblages. Histograms are best used when the relationship between dental eruption/attrition and age is well established so that individuals can be confidently assigned into 10% of life‐span groups, and when more than 30 or 40 individuals are present in the assemblage. Boxplots employ raw crown heights, thus removing the error introduced by assigning specimens to age classes, and therefore they allow the analysis of species where the relationship between dental eruption/attrition and age is unknown. Confidence intervals around the medians allow samples to be statistically compared. Triangular plots are easy to use and allow multiple samples and species to be considered simultaneously, but samples cannot be statistically compared. Modified triangular plots bootstrap samples to provide 95% confidence ellipses, allowing for statistical comparisons between samples. When possible, samples should be examined using multiple methods to increase confidence in the results. Copyright © 2005 John Wiley & Sons, Ltd.     

Darwinian Evolutionism Is Applicable to Historical Archaeology

Over the past decade or so, an increasing number of archaeologists have begun to show interest in employing Darwinian evolutionary theory to explain variations in the material record. Epistemological and methodological issues surrounding the implementation of Darwinian evolutionism in archaeology are numerous, the most basic of which is that Darwinism embodies a materialist perspective, whereas archaeology traditionally has maintained an essentialist outlook. Stemming from this dichotomy are fundamental differences in such things as how units are created and how they are used to measure change. As archaeologists grapple with these issues, specific examples of how Darwinian evolutionism can be used to build historical narratives and create historical explanations are appearing with more frequency, but with few exceptions, proponents have focused specifically on the prehistoric record. This gives the impression that Darwinian evolutionism is not applicable to the more-recent material record, which is decidedly not the case. The kind of evolutionism proposed here transcends the age of the record under investigation.     

建国以来党和国家领导制度的历史考察

建国以来,党和国家建立并实行以民主集中制为原则的集体领导和个人分工负责相结合的领导制度。本文从其历史渊源、具体实践中的探索、完善及创新三个方面,阐述了建国以来党和国家领导制度的历史演变。     

旅游产业集群企业共享性资源及其动态演化机制分析

近年来,围绕旅游产业集群的形成、发展以及集群风险规避等方面的研究层出不穷。然而,一些“就集群而论集群”的研究由于忽视了旅游集群企业这一构成旅游产业集群的微观基础,因而无法切实有效地指导实践操作。基于此种现实,本文在吸收基于资源观及其理论研究成果的基础上,通过对旅游产业集群企业共享性资源与其来源之间的互动和转换关系的讨论,提出旅游产业集群企业共享性资源的划分维度、动态演化过程、动态演化的动力及运行机制等问题,展开对旅游产业集群共享性资源动态演化机制的研究。     

基于时空尺度下陕西省旅游经济差异及形成机制研究

本文选取1998—2007年陕西省10个地级市的旅游综合收入作为主要指标,对陕西省旅游经济的时空差异进行分析。研究结果表明：（1）陕西旅游经济绝对差异不断扩大但相对差异逐渐缩小;（2）空间差异显著但呈现均衡化的演变趋势。进一步的研究显示了旅游资源禀赋和区域经济发展水平是陕西省旅游经济差异形成的主导因素,表明了陕西省是资源和区域经济双重依赖型旅游经济。     

历史时期疏勒河水系变迁及相关问题研究

疏勒河是河西走廊西部的重要河流,关于历史时期其水系的演变问题,前辈学者已从不同角度予以关注,但在方法与详尽程度方面仍有较大改进空间。本文在充分发掘地方文献的基础上,充分利用游记、考古材料,并结合自然科学相关研究成果,就历史时期各阶段疏勒河流域水系分布状况与演变过程进行了全面讨论,订正了一些广为流传的明显错误,并就其中涉及到的部分古代地名问题提出了自己的看法。     

江苏省入境旅游流的时空演变及影响因素分析

入境旅游是衡量一个地区旅游经济发展水平的重要指标.本文以2000~2012年江苏入境旅游人数和外汇收入数据为基础,运用定量方法、GIS软件等对江苏入境旅游流的时空演变过程及影响因素进行分析.研究发现:江苏入境旅游流及外汇收入稳步上升,2005年后江苏入境旅游经济逐渐走向成熟;在2000~2005年期间,港澳游客占据江苏的主要入境客流市场,2005年后外国游客成为江苏入境旅游市场的主角;入境旅游流流质不断提高,各市入境旅游流流质空间分布差异逐渐减小;江苏入境旅游流流量受民航客运量及经济社会发展影响较大;而交通线路长度及星级酒店对旅游流质量影响较大.     

炽盛光佛变相图中的土星形象演变

梳理土星源流可以发现,在佛教图像志中的土星神格形象受到印度神话中焰摩天形象的影响。随着密教经典的传播和佛教中国化的不断深入,土星形象不断发展演变。在炽盛光佛变相图中,土星形象由早期佛前"牵牛者"、中期佛前"燃香者"到晚期的"迎佛者",由"形似婆罗门"演变为着汉式服饰的老者形象,由执板册到手持香炉形象的演变。梳理出其在各时期的形象特征、演变情况,探究土星形象演变的社会历史因素及其在此过程中功能的转变可知,土星形象的变化与时代背景、美学思想、儒释道合流、民间审美等多种因素相关。