信息化背景下的地理信息产业方法论     

杨槐 《测绘信息与工程》2014,(2):1-5

介绍了地理信息产业中企业的创新方法论,包括12个方面：l～4方面主要包括功能组合、性能提升、技术链接、新兴技术的创新活动,以专家学者的技术性创新为主;5～8方面包括底层基础、顶层设计、宏观集成、组织工艺等4个方面的创新活动,经营管理者起更大的作用;9～12方面包括了业务衍生、资源整合、资本运作、产业生态,是企业家起主导作用。要影响和推动产业的发展需要将12个方面的创新协同起来。  相似文献   

三维技术辅助设计地下管道内套新管的应用     

王涛  张毅  徐莹 《测绘科学技术学报》2014,(5)

既有管道由于自身弯曲和多处沉降导致其三维模型十分复杂,常用的三维管道设计软件不可用,若以测量的纵断面图为依据进行平面层次的设计则存在极大的不可靠性,因而只能利用计算机三维图形技术解决。这里研究采用三维技术辅助既有地下给排水管道内套新管的设计,用三维碰撞检测算法来趋近获取最大管径,并采用基于四元数的球面线性插值法进行三维圆弧的拟合,从而实现对复杂管道的三维建模。采用基于三角形单元的碰撞检测方法,具有简便、适用的特点。基于高效三维引擎Open Scene Graph开发了三维建模及碰撞检测演示软件并对某设计项目进行察看、验证,证实了此方法的正确性。  相似文献   

Descriptions of four new species of the genus Reticunassa Iredale, 1936 (Gastropoda: Nassariidae) from the northeastern coast of Taiwan Island and the South China Sea     

Shuqian Zhang  Suping Zhang  Chih-Yeh Lee 《海洋学报(英文版)》2022,41(8):74-77

In the present study, four new species of the genus Reticunassa Iredale, 1936 collected from Chinese waters are described and illustrated. Reticunassa hugokooli sp. nov., Reticunassa jungi sp. nov. and Reticunassa aureolineata sp. nov. were collected from the northeastern coast of Taiwan Island, whereas Reticunassa fuscofasciata sp. nov. was collected from the northeastern coast of Taiwan Island and the South China Sea. The four new species can be distinguished conchologically from other congeners mainly in protoconch, shell shape, sculpture, and coloration. These findings demonstrate that the biodiversity of this group in China might be largely underestimated.  相似文献   

Spatial distribution and the scale effect of influencing factors of specialized and sophisticated enterprises that produce new and unique products in the Yangtze River Delta region: Based on the buffer and MGWR analyses北大核心CSCD     

丁建军  胡定国  冷志明 《地理科学进展》2023,(11):2099-2112

High-quality cultivation of specialized and sophisticated enterprises that produce new and unique products is an important starting point for consolidating the security foundation of China's industrial chain and supply chain. Using buffer zone analysis and the multi-scale geographically weighted regression (MGWR) model, this study explored the spatial distribution of specialized and sophisticated enterprises that produce new and unique products in the Yangtze River Delta region and influencing factors in 2021. The study found that: 1) Spatially, Shanghai is the main area where specialized and sophisticated enterprises that produce new and unique products are concentrated, followed by provincial capitals and cities on the coast and along rivers; The overall composition of the industry is unbalanced, and the real economic industries such as machinery and equipment manufacturing and high-tech manufacturing account for a relatively high proportion, but there are differences in different regions. 2) In terms of spatial agglomeration, differences between circles and the scale effect are obvious. Within each province, the spatial distribution of specialized and sophisticated enterprises that produce new and unique products in different cities is uneven. Region-wide, the overall spatial distribution pattern of "one pole and multiple cores" is evident. Shanghai is the main agglomeration area for these enterprises, and the provincial capital cities and cities that are the regional economic centers are the secondary agglomeration areas of these enterprises. 3) The four dimensions of influencing factors—physical geography, government, market, and society—have a scale effect on the spatial distribution of specialized and sophisticated enterprises that produce new and unique products. The degree of land development acts at a small scale, which is a local variable, and shows a large difference in the impact on the spatial distribution of these enterprises across the region. Factors such as elevation, government-business relationship, degree of marketization, number and scale of enterprises, degree of openness, logistics development level, and innovation environment are global variables, and except that the degree of marketization and the number of enterprises have a significant negative impact on the spatial distribution of these enterprises, the impact of all other factors is significantly positive. The research results can provide support for the optimization of the layout of new special expertise enterprise space in the Yangtze River Delta region, in order to provide reference for the formulation of new special expertise policies and industrial planning. © 2023, Editorial office of PROGRESS IN GEOGRAPHY. All rights reserved.  相似文献   

A method developed for predicting potential precursors of earthquakes     

Guo Hang 《地球空间信息科学学报》2013,16(2):47-52

This paper describes the methodology used to eliminate environmental effects to a time series of short distance (24m) leveling across a geological fault in order to detect potential precursors of earthquakes from the residual time series. First, linear trends and periodic signals are removed from the observations with the help of a recursive least squares method. Then, a controlled autoregression model is used to predict the environmental contribution due to precipitation and evaporation. The difference between the leveling data and these predictions are considered to be due to endogenic crustal processes. Applying this methodology to leveling data of approximately 13 years at Niukouyu crustal deformation station near Beijing reveals an anomalous deformation before the Tangshan earthquake (M7.8), which has its epicenter about 180 km from the survey site. However, in the time period considered, another anomaly occurred which cannot be related directly to a seismic event.  相似文献   

Locating the Melody of the Drives     

Paul Kingsbury 《The Professional geographer》2013,65(4):519-533

Psychoanalysis has profoundly influenced those social theories that inform qualitative methodology in human geography. Yet many geographers are skeptical about the value and viability of psychoanalytic methodology because of its alleged reductionist causal explanations and relativistic interpretations of data. Drawing on the work of Slavoj ?i?ek, which affirms Jacques Lacan's undermining of the dualism of causality versus sense, this article illustrates the potential value of Lacanian psychoanalysis as a qualitative methodology in geography. Using a methodological case study from my research on Jamaican tourism, I illustrate how we can locate a Lacanian understanding of the drives in the interactions between tourists and hotel workers. In so doing, the article provides new insights into the enduring allures of tourism's commodity-form by focusing on how the object petit a—a chimerical object that incites desire and an unattainable object that the drives encircle—takes place in customer service and entertainment activities.  相似文献   

THE MOST PERFECT EXAMPLE OF AN ALIEN ECOLOGY EVER CONSTRUCTED     

《The Professional geographer》2013,65(4):471-477

Much science-fiction literature is based upon the creation and exploration of alternative environments. Stanley G. Weinbaum's short story, “Parasite Planet,”introduces an unusual environment that may be wrong in the light of recent evidence on Venus but still stimulates the geographical imagination.  相似文献   

Automated (post)positivism     

Elvin Wyly 《Urban geography》2013,34(5):669-690

With a mantra that ‘nobody is as smart as everybody,’ Google maintains giant databases that enable unprecedented quantitative analysis of a social world that is now majority urban. A Wall Street web-based broker offers an App that promises to turn ‘thoughts into trades.’ Economists and marketers now use evolutionary theory in ‘neuroimaging’ brain scans of consumer behavior. The United States Air Force now trains more joystick-maestro drone pilots than old-fashioned Do-the-Right-Stuff human fighters and bombers. In this article, I suggest that these trends signal a troubling reincarnation of an aggressive Right-wing (post)positivist zombie reanimated by global, digitized neoliberalism. The long-forgotten revolutionary project launched by Auguste Comte in 1822 was hijacked and corrupted after his death, and now we confront a hybrid cyborg zombie, a dehumanized, automated adaptation to the post-structuralist situated knowledges of consumer sovereignty. #Comtebot: The positivist era is right now; the question is what kinds of politics it will have.  相似文献   

A Survey of Seasonal and Permanent Landowners in Wisconsin's Northwoods: Following Dillman and Then Some     

Greg Clendenning  Donald R. Field  Dana Jensen 《社会与自然资源》2013,26(2):226-237

This article demonstrates the importance of obtaining high response rates for surveys of the general population while illustrating that survey design and procedures that adopt and modify factors known to positively affect survey returns can lead to high response rates, even for a lengthy survey of the general population. Using an expanded version of Dillman's “tailored design method,” we achieved an 82.8% response rate for a general population survey of landowners. When comparing early respondents to late respondents we found significant differences on several sociodemographic variables as well as a number of attitudinal measures central to the research project. In addition, costs are compared between this methodology and a more typical four-wave mailing. Our survey further highlights the importance of improving our understanding of the social changes taking place in rural communities and the implications these changes can have on natural resources management.

This article originally published in Society & Natural Resources, Vol. 17, Issue 5, pages 431–442, 2004. DOI: 10.1080/08941920490430223  相似文献   

声景学及其在旅游地理研究中的应用   总被引：2，自引：0，他引：2  

刘爱利  胡中州  刘敏  邓志勇  姚长宏 《地理研究》2013,32(6):1132-1142

声音是旅游者旅游体验的活动构成要素之一,也是强化旅游者对旅游地地方感知的重要内容,对于塑造旅游者完整深刻的旅游体验具有重要意义。从旅游地理研究的现状来看,在旅游资源开发利用、旅游产品包装设计、旅游设施空间配置、旅游形象塑造构建、目的地营销拓展等方面,研究者普遍关注了旅游系统中的视觉要素,对听觉、嗅觉、触觉等其他要素却关注得较少。基于此,在对旅游系统中声音要素进行重要性分析的基础上,将声景学及其相关理念引入旅游研究的范畴,为研究旅游系统中与声音相关的现象和关系提供了新的视角,并指出了拓展现有旅游地理研究的一个重要方向。声景学的引入,对完善和深化旅游地理研究具有重要意义。  相似文献