共查询到20条相似文献，搜索用时 15 毫秒
1.
基于网络游记的青岛市国内旅游客源市场结构与旅游流时空特征分析 总被引：2，自引：2，他引：0
随着“互联网+”的普及和自由行的广泛参与,以网络游记为代表的旅游信息逐渐增多,为旅游客源市场结构与旅游流时空特征研究提供了可靠数据源和新的视角。从携程旅行网与马蜂窝网站采集2016年1月1日至2018年12月31日共3 a的青岛市网络游记并清洗、归纳,共得1 891篇有效样本,涉及全国28个省区市共131个城市,结合统计分析及ArcGIS空间分析方法,以地级市为研究单元深入探索青岛市国内客源市场结构与旅游流时空特征。结果表明:① 青岛市国内客源市场可按客源城市游记样本数量指标划分为核心层、次核心层、中间层、次边缘层、边缘层5个层级,“胡焕庸线”两侧差异显著。② 客源吸引半径达590.68 km,覆盖京津冀、长三角、辽、豫、皖部分地区;引力主场集中在1 500 km范围内,在接近500 km处出现客源最高峰。③ 旅游流年内变化季节差异显著,存在节假日及“峰-谷”循环的周末效应;沿海区市与内陆区市的旅游流空间分布密度极不均衡,4个季度差异显著;旅游流轨迹集中于胶州湾东西两岸,尚未形成串联各景区景点的闭合式旅游环线。 相似文献
2.
Robert Roth Stephen Young Chelsea Nestel Carl Sack Brian Davidson Julia Janicki 《The Professional geographer》2018,70(3):395-411
This article reports on the design and evaluation of Global Madison, a mobile map designed to support teaching and learning about globalization using Madison, Wisconsin, as a situated classroom. Our experience of place increasingly is mediated by mobile devices, opening new opportunities and challenges for research, industry, and education. Despite this rising popularity, few guidelines exist for creating and using mobile maps. Following tenets of user-centered design studies, we conducted two mixed-method evaluations of Global Madison to improve the tool and generate design insights that are potentially transferable to similar mobile mapping contexts: 244 students participated in an online survey after completing the tour and eighteen students were observed in the field. The evaluations generated new design considerations for mobile maps supporting situated learning, include: focus on critical issues that might leave students stranded, append location-based services with traditional mapping, enforce cognitive association between map and landscape, supply a consistent feed of information for new learners, encourage collaborative learning in the landscape, and promote student safety above all else. 相似文献
3.
Knowledge of the driving forces behind indigenous participation in the market is essential for practitioners intending to integrate conservation and development policies in indigenous territories. Nevertheless, empirical research on the determinants of market integration among indigenous peoples is still scarce. This article uses household survey data and multivariate techniques to examine the drivers of market integration among indigenous groups in the Ecuadorian Amazon. We use multiple measures of market integration, including the sale of crops, timber, and wildlife; the use of credit; and participation in wage labor. The results show that the way in which indigenous peoples integrate into the market depends on their endowments of human, financial, and physical capital. More educated households are able to engage in commercial agriculture and nonagricultural wage work, whereas uneducated poor households in communities in conflict with outsiders are pushed to engage in poorly paid agricultural wage work and (often illegal) timber operations. 相似文献
4.
准确刻画精细化尺度下的城市房租空间格局,对于研究城市居住行为、提高城市规划合理性十分重要。文章提出了一种基于互联网房租数据作为可靠数据源的城市房租空间格局制图方法。以深圳市作为研究区,通过广泛采集开放平台中用户发布的租房信息,绘制社区行政区尺度的房租空间分布图。房租空间制图涉及到对于没有样本数据区域平均房租的评估,因此,选取一系列与房租相关的房产属性、房屋区位及配套设施的评价指标,采用前馈神经网络技术构建评估模型。以2015年深圳市的住宅租赁市场作为研究对象,通过对结果的分析,以及与权威部门发布的统计数据进行比较,表明此方法能够有效地绘制社区尺度下城市房租的空间分布,模型预测结果的误差（%RMSE）为13.87%。所使用的互联网房租数据、POIs数据及前馈神经网络的建模工具均是开源的,而且所提出的方法论具有普适性,能够应用于其他研究区的房租空间格局制图,具有实践意义。 相似文献
5.
《The Journal of geography》2012,111(3):94-107
AbstractThis article investigates the particular mechanisms through which a role-play simulation impacts student perceptions of knowledge acquisition. Longitudinal data were mobilized in the form of quantitative and qualitative surveys to examine whether the simulation succeeded in increasing knowledge around both content and skills. It then delves deeper into the relationship between simulations and knowledge transmission by exploring the role of online technologies and stakeholder choice as mediators. This analysis reveals two major insights: (1) the importance of thoughtfully embedding the simulation within the overarching logic of the course itself, and (2) the potential contribution of online technologies to enhancing student knowledge acquisition. 相似文献
6.
Jeremy Mennis 《The Professional geographer》2003,55(1):31-42
Aggregated demographic datasets are associated with analytical and cartographic problems due to the arbitrary nature of areal unit partitioning. This article describes a methodology for generating a surface‐based representation of population that mitigates these problems. This methodology uses dasymetric mapping and incorporates areal weighting and empirical sampling techniques to assess the relationship between categorical ancillary data and population distribution. As a demonstration, a 100‐meter‐resolution population surface is generated from U.S. Census block group data for the southeast Pennsylvania region. Remote‐sensing‐derived urban land‐cover data serve as ancillary data in the dasymetric mapping. 相似文献
7.
Paul Bishop 《The Australian geographer》1998,29(1):7-29
Much of the current research on long‐term landscape evolution and drainage history in SE Australia is built in one way or another on the early work of Griffith Taylor. The controversy prompted by several attempts to incorporate Taylor's work in recent plate tectonics interpretations of the long‐term evolution of SE Australia highlights differences of opinion as to the appropriate methodologies for such investigations. These questions, including the issues of data sources in reconstructions of long‐term landscape history, testability of such reconstructions, and the relationship between the landscape history so reconstructed and larger‐scale, regional landscape histories, appear not to have been addressed in recent literature on geomorphological methodology. This literature notes the demise of critical rationalism and appears to espouse a strongly relativist viewpoint, which relies on the shared understanding among the discipline's practitioners as to what are appropriate data sources and tests for hypotheses of long‐term landscape evolution. This offers little hope for resolution of the current disputes about the evolution of the drainage systems of SE Australia, but puts the onus squarely on us, the practitioners, to develop shared understandings of the appropriate data sources and tests for our hypotheses and grand schemes of the type so favoured by Griffith Taylor. 相似文献
8.
迁居是城市空间重构的基础动力,了解其行为机制对改善住房结构、优化空间组织具有重要意义,然而目前针对大城市内部、正规与非正规二元居住空间并存的迁居研究仍较薄弱。本文基于生命历程理论与家庭迁居理论,利用2018年12月至2019年12月的手机信令等多源数据,识别深圳市二元居住空间分布和迁居流样本,从迁居流特征、邻里属性和二元空间类型三方面选取指标开展基于主成分分析的K-means聚类,探究迁居模式、结构特性与形成原因。结果表明：(1)非正规内部、正规与非正规交互、正规内部三层次迁居类型间存在年龄和居住质量递增的趋势,但均呈现通勤导向;(2)二元迁居的主体是短距离迁移,形成了4个大规模迁居网络集群,总体方向表现出郊区化趋势;(3)迁居模式可聚类为社区型、改善型、家庭型、事业型4类,结合二元空间分异影响呈现出8亚类,不同类型迁居群体属性和动因存在显著差别,总体反映出人们在不同生命历程下的迁居过程。最后,文章针对不同迁居模式提出差异化空间治理政策建议。 相似文献
9.
中国地级行政区域市场潜力评价 总被引：6，自引：0，他引：6
从产地-市场空间关系角度, 定量分析了我国地级行政区域的市场潜力及其空间格局, 揭示了市场通达性与区域发展之间的关联。我国市场潜力指数从沿海地区向内陆地区逐级递减,形成了以沿海地区为中心、内陆地区为外围的中心- 外围格局, 而且差异在继续扩大。市场潜力与区域经济发展之间在宏观尺度上呈现高度的空间关联, 市场潜力高的区域是经济总量集中分布的地区。这种关联印证了市场通达性是区域经济发展的重要影响因素之一, 市场潜力与区域经济发展之间存在着循环因果关系。这种循环累积效应使得沿海地区在未来发展中将继续处于优势地位, 并导致区域发展差异的进一步扩大。鉴于地区间经济联系对产地- 市场空间联系的重要性, 经济区位分析需将视野从本地市场扩展到地区间经济联系。西部地区发展与沿海地区的经济联系受到距离和运输成本的限制, 应重视扩大内需, 改善其市场通达性, 促进当地经济发展。 相似文献
10.
基于签到数据的城市活动时空间动态变化及区划研究 总被引：10，自引：6，他引：4
借助新浪微博,引入位置服务大数据,以南京市为例,从时间、空间、活动3个方面分析城市活动空间的动态变化,并在掌握变化规律的基础上进一步划分城市活动区域。研究发现：传统的作息规律仍然支配着人们的签到活动,时间与活动内容间的对应关系仍然存在;居民活动在工作日、休息日与节假日,以及主城与外围地区存在差异;城市活动空间在一天内经历了相对分散-集聚-进一步集聚-分散-相对集聚的动态变化;城市活动区域可以划分为就业活动区、居住活动区、休闲活动区、夜生活活动区,及综合活动区;活动功能区呈现出混合化与边界模糊化的特征。 相似文献
11.
成都市体验性网络团购市场发展的空间特征 总被引：3，自引：1，他引：2
体验性网络团购模式正在对城市商业空间产生显著影响。以团购商品信息量作为基础数据,采用矢量数据符号法和空间插值法对成都市团购市场发展的空间特征进行分析。结果表明：餐饮、娱乐、生活和旅游酒店类团购信息在各商圈分布的集中化程度与摄影类相比较低。成都市中心区域的团购市场发展水平较高,形成了以春熙路商圈为核心的综合商业型热点区和以建设路商圈和双楠商圈为核心的生活服务型热点区。市场原则下团购市场发展的空间公平性较好的区域主要集中在成都市中心区域。团购市场发展的空间格局具有明显的区位特征,其空间发展的驱动力主要包括实体商业空间布局、消费者规模空间格局和区域可达性等;“时间距离”对团购市场区位特征产生的摩擦阻力已经超过空间距离。 相似文献
12.
This paper considers issues of authenticity as they apply to the evolution of farmers' markets in New Zealand. Following a discussion of the nature of authenticity and its deployment by farmers' market organisations in several jurisdictions, a two‐part case study is presented. An analysis of the strategies adopted by Farmers' Markets New Zealand to ‘protect its brand’ nationally and an examination of the disputation of authenticity in the Marlborough Farmers' Market reveals the potential of the ‘authenticity project’ to be a lightning rod for heightened tension and the fracturing of the relationship between competing interests in New Zealand farmers' markets. 相似文献
13.
Diansheng Guo 《International journal of geographical information science》2013,27(9):1367-1389
The relationship between two or more variables may change over the geographic space. The change can be in parameter values (e.g., regression coefficients) or even in relation forms (e.g., linear, quadratic, or exponential). Existing local spatial analysis methods often assume a relationship form (e.g., a linear regression model) for all regions and focus only on the change in parameter values. Therefore, they may not be able to discover local relationships of different forms simultaneously. This research proposes a nonparametric approach, a local entropy map, which does not assume a prior relationship form and can detect the existence of multivariate relationships regardless of their forms. The local entropy map calculates an approximation of the Rényi entropy for the multivariate data in each local region (in the geographic space). Each local entropy value is then converted to a p-value by comparing to a distribution of permutation entropy values for the same region. All p-values (one for each local region) are processed by several statistical tests to control the multiple-testing problem. Finally, the testing results are mapped and allow analysts to locate and interactively examine significant local relationships. The method is evaluated with a series of synthetic data sets and a real data set. 相似文献
14.
People’s decisions of residential mobility in housing market and decisions of job change in labor market play an essential role in the formation and dynamics of urban spatial structure. This paper investigates the relationship between residential relocation and job change and its heterogeneity using a large-scale survey of residential living satisfaction and preferences in Beijing. Several conclusions are drawn as follows: 1) People’s decisions of residential mobility are significantly positively correlated with their decisions of job change, indicating that these two-dimensional decisions are in fact a correlated decision process rather than two independent decision processes. 2) There is heterogeneity in the correlated decisions of residential mobility and job change. More specifically, the interrelationship between the decisions of residential mobility and job change among people without Beijing hukou, renters and single-worker households is more intensive than people with Beijing hukou, homeowners and multi-worker households. In addition, there is heterogeneity in the determinants of residential relocation and job change between groups with different types of housing tenure, household registration status and family employment structure. 3) For renters, commuting time can significantly increase the probability of residential relocation, which indicates that residents of different socioeconomic attributes have very different responses to commuting time costs. 相似文献
15.
Zhenlong Li Qunying Huang Yuqin Jiang Fei Hu 《International journal of geographical information science》2020,34(6):1188-1209
ABSTRACTBig climate data offers great opportunities for scientific discovery but demands efficient and effective analytics to investigate unknown and complex patterns. Most existing online processing and analytics systems for climate studies only support fixed user interface with predefined functions. These systems are often not scalable to handle massive climate data that could easily accumulate terabytes daily. To address the major limitations of existing online systems for climate studies, this paper presents a scalable online visual analytic system, known as SOVAS, to balance both usability and flexibility. SOVAS, enabled by a set of key techniques, supports large-scale climate data analytics and knowledge discovery in a scalable and sharable environment. This research not only contributes to the community an efficient tool for analyzing big climate data but also contributes to the literature by providing valuable technical references for tackling spatiotemporal big data challenges. 相似文献
16.
David L. Vasconcelos Fernando O. Marques Francisco C. C. Nogueira Yoe A. R. Perez Francisco H. R. Bezerra Rmulo C. Stohler Jorge A. B. Souza 《Basin Research》2021,33(1):705-728
Common basin models assume that the post‐rift tectonic evolution of most basins is usually associated with tectonic quiescence. However, tectonic inversion during the post‐rift phase has been proposed for several sedimentary basins worldwide, but how and why it happens is still a matter of debate, especially in intracontinental settings where the lithosphere is old and thick. Here, we use geological and geophysical data from the Rio do Peixe Basin in NE Brazil to show evidence that intracontinental sedimentary basins can be tectonically inverted by far‐field compressive stresses acting on pre‐existing weakness zones of lithospheric‐scale where stresses can concentrate and inversion can occur. Geomorphological and field data combined with seismic reflection, gravimetric and borehole data show that: (a) inversion occurred along two main Precambrian lithospheric‐scale shear zones, the Patos (E‐W trending) and Portalegre (NE‐SW trending), which had already been reactivated as basin‐bounding faults during the earlier rift stage; (b) post‐rift reactivation affected (mostly) the original master normal faults with the largest rift displacements, and locally produced new reverse faults; (c) during contraction, deformation was partitioned between fault reactivation and buckling of the incompetent sediment pushed against the hard basement; (d) all these signs of inversion have been observed in the field and can be demonstrated on seismic reflection profiles; and (e) combined gravimetric and seismic data show that the main structures of the basin were followed by an inversion. These data are consistent with the operation of WSW‐ENE horizontal maximum compressive stress as a result of combined pushes of the Mid‐Atlantic Ridge (towards the W) and the Andes (towards the E), responsible for the post‐rift oblique inversion of normal faults inherited from the rift phase and formed with vertical maximum compressive stress. 相似文献
17.
一种改进人口数据空间化的方法:农村居住地重分类 总被引：11，自引：3，他引：8
人口( 统计) 数据空间化是解决统计数据与自然要素数据融合分析的有效途径。本文在论 述已有人口空间化方法的基础上, 认为遥感影像得到的居民地数据是表达人口分布的最好指标。 为了使居民地数据更好地应用于人口空间化的研究, 论文在分析各种与人口居住密度相关指标 的基础上, 确定了用农村居民地面积所占百分比对农村居民地进行重新分级, 然后应用于人口空 间化的计算。结果检验表明, 人口空间分布数据的误差从分级前的17.4%降到分级后的12%, 尤 其是误差高于30%的乡镇个数从8 个减少到1 个, 该方法有效地提高了人口空间数据的精度。 相似文献
18.
《The Professional geographer》2013,65(2):133-138
Literature on the theoretical foundations of urban affairs emphasizes that the field is interdisciplinary in nature. The urban perspectives of the traditional social sciences, which include geography, should each constitute a significant component within an urban affairs program. However, the results of a recent survey indicate that geography is not represented in graduate urban affairs programs nearly to the extent of the other social sciences. The discrepancies between the interdisciplinary claims of the theoretical literature and the survey results are demonstrated in this article, followed by several hypotheses regarding possible causes of this situation. 相似文献
19.
地理空间元数据关联网络的构建 总被引：1，自引：1，他引：0
利用资源描述框架（RDF）设计地理空间元数据关联模型,根据地理空间元数据之间的语义关系和语义相关度的计算,以构建以元数据为节点、元数据之间的语义关系为边、语义相关度为权重的关联网络。在这一网络中,一个节点是一个地理空间元数据的资源描述图,包含属性特征（数据来源、空间特征、时间特征、内容）及其关系特征（元数据之间的语义关系、语义相关度）。实验及其分析表明,地理空间元数据关联网络可以有效地支持地理空间数据语义关联检索、推荐等应用,这与传统的基于关键词的元数据检索方式相比,具有更高的准确度。 相似文献
20.
市场潜力、空间溢出与制造业集聚 总被引：1，自引：1，他引：0
为深入分析国内外市场潜力对于中国制造业集聚发展的重要影响,首先引入一个新经济地理学模型,从理论上分析国内外市场潜力对于制造业区位选择的影响,进而结合跨省面板数据,采用空间杜宾模型对中国省域国内外市场潜力对制造业集聚的影响效应进行经验论证。参数估计结果很好地证实了省域内的国内外市场潜力对制造业集聚的显著的直接促进作用以及省域间的国内市场潜力和国外市场潜力对制造业集聚的空间溢出效应。此外,实证结果也证实了交通基础设施和市场化程度对制造业集聚的直接促进作用,劳动生产率对制造业集聚的直接促进作用和正向溢出效应,实际工资水平对制造业集聚的直接和间接阻滞（负溢出）作用。基于地理距离空间权重矩阵和0-1邻接空间权重矩阵的估计结果具有一致性。文章最后指明了上述结论的政策含义。 相似文献