信息通信技术(information and communications technology,ICT)等的发展使现代地图面临着机遇和挑战:地图趋向数字虚拟空间方向发展,地图学的研究方法、主题与传统地图学大相径庭,地图虚拟空间的理论还有很大的发展空间,同时互联网技术...信息通信技术(information and communications technology,ICT)等的发展使现代地图面临着机遇和挑战:地图趋向数字虚拟空间方向发展,地图学的研究方法、主题与传统地图学大相径庭,地图虚拟空间的理论还有很大的发展空间,同时互联网技术(internet technology,IT)领域的学科跨界迫使地图逐渐发展成为互联网产品的附属物,内忧外患的双重夹击使得地图学亟待完善和更新理论。地图学发展的难题促使学者向其他领域进行探索。计算机游戏通常具有明显的地理意义,"数字+文化"的发展将游戏推向高新技术的前列,游戏地图则是现代ICT技术和地图的合体。以游戏地图的结构为研究对象,以游戏地图的维度、交互性、叙事探索性和文化传播性来探究虚拟空间的特点、本质及对现实物理世界的启示,发掘其对地图理论的扩展,从而完善ICT时代地图学的知识和理论,促进地图学的发展。展开更多
In this paper we discuss a relatively general kind of iterative functional equation G(x,f(x), ...,f n (x)) = 0 (for allx ∈J), whereJ is a connected closed subset of the real number axis ?,G∈C m (J n+1, ?) andn ≥ 2....In this paper we discuss a relatively general kind of iterative functional equation G(x,f(x), ...,f n (x)) = 0 (for allx ∈J), whereJ is a connected closed subset of the real number axis ?,G∈C m (J n+1, ?) andn ≥ 2. Using the method of approximating fixed points by small shift of maps, choosing suitable metrics on functional spaces and finding a relation between uniqueness and stability of fixed points of maps of general spaces, we prove the existence, uniqueness and stability ofCm solutions of the above equation for any integer m ≥ 0 under relatively weak conditions, and generalize related results in reference in different aspects.展开更多
今天人们对城市的体验愈发被嵌入了“本地服务”和“出行导航”功能的城市数字地图所中介,但城市数字地图并非中立的工具。从POI (Point of Interest)数据体制和流动空间生产的角度分析城市数字地图对城市的表征和塑造,可以发现:一方面...今天人们对城市的体验愈发被嵌入了“本地服务”和“出行导航”功能的城市数字地图所中介,但城市数字地图并非中立的工具。从POI (Point of Interest)数据体制和流动空间生产的角度分析城市数字地图对城市的表征和塑造,可以发现:一方面在地图厂商运营需求、地理媒介“定位”逻辑、现代商业主流形态的过滤下,城市数字地图忽视了位于城市“边缘”的生活形态;另一方面,在POI推送和本地生活信息服务的双重作用下,特定物理地点及其流量生成逻辑正愈发受到数据体制的形塑。在“城市更新”和“打卡经济”的趋势中,一个借数字地图生产出来的“流动空间”正在信息、人员和资本的流动中形成,它将信息和资本的全球化逻辑接入地方,并很可能在这个过程中,进一步制造出地区发展的不平衡和空间权利的不平等。展开更多
Cyberspace is a new spatial realm of activities involving both humans and data,and it has become a cornerstone of the national security of every country.A scientific understanding of cyberspace is essential for analyz...Cyberspace is a new spatial realm of activities involving both humans and data,and it has become a cornerstone of the national security of every country.A scientific understanding of cyberspace is essential for analyzing cyberspace incidents,governing cyberspace and ensuring cybersecurity.Accordingly,cyberspace has become a new field of geographic research in the Information Age.Against the backdrop of fierce international competition over cyberspace,there has been an urgent need to strengthen research between the fields of geography and cybersecurity,leading to theoretical and methodological innovations that have created the sub-discipline of cyberspace geography.Cyberspace geography(CG)extends geographical research from real spaces to virtual spaces,and its theoretical basis is the evolution of the traditional geographic human-land relationship theory into a human-land-network relationship theory.CG research includes constructing mapping relationships between cyberspace and real space,redefining the traditional geographic concepts of distance and regions for cyberspace,creating a language,models and methodologies for visually representing cyberspace,drawing maps of cyberspace,and researching the principles governing the evolution of cyberspace structures and behaviors.The technical methods of CG include collecting and integrating data on elements of cyberspace,visually representing cyberspace and conducting cyberspace situational and behavioral intelligence awareness.Intelligence awareness covers cyberspace situational status assessments,network hotspot event dissemination and traceability analysis,and network event situational simulations and risk predictions.CG offers new perspectives on the scientific understanding of cyberspace,the development of disciplines such as geography and cybersecurity,and the creation of national cybersecurity prevention and control mechanisms as well as a community of common future in cyberspace.展开更多
文摘信息通信技术(information and communications technology,ICT)等的发展使现代地图面临着机遇和挑战:地图趋向数字虚拟空间方向发展,地图学的研究方法、主题与传统地图学大相径庭,地图虚拟空间的理论还有很大的发展空间,同时互联网技术(internet technology,IT)领域的学科跨界迫使地图逐渐发展成为互联网产品的附属物,内忧外患的双重夹击使得地图学亟待完善和更新理论。地图学发展的难题促使学者向其他领域进行探索。计算机游戏通常具有明显的地理意义,"数字+文化"的发展将游戏推向高新技术的前列,游戏地图则是现代ICT技术和地图的合体。以游戏地图的结构为研究对象,以游戏地图的维度、交互性、叙事探索性和文化传播性来探究虚拟空间的特点、本质及对现实物理世界的启示,发掘其对地图理论的扩展,从而完善ICT时代地图学的知识和理论,促进地图学的发展。
文摘In this paper we discuss a relatively general kind of iterative functional equation G(x,f(x), ...,f n (x)) = 0 (for allx ∈J), whereJ is a connected closed subset of the real number axis ?,G∈C m (J n+1, ?) andn ≥ 2. Using the method of approximating fixed points by small shift of maps, choosing suitable metrics on functional spaces and finding a relation between uniqueness and stability of fixed points of maps of general spaces, we prove the existence, uniqueness and stability ofCm solutions of the above equation for any integer m ≥ 0 under relatively weak conditions, and generalize related results in reference in different aspects.
文摘今天人们对城市的体验愈发被嵌入了“本地服务”和“出行导航”功能的城市数字地图所中介,但城市数字地图并非中立的工具。从POI (Point of Interest)数据体制和流动空间生产的角度分析城市数字地图对城市的表征和塑造,可以发现:一方面在地图厂商运营需求、地理媒介“定位”逻辑、现代商业主流形态的过滤下,城市数字地图忽视了位于城市“边缘”的生活形态;另一方面,在POI推送和本地生活信息服务的双重作用下,特定物理地点及其流量生成逻辑正愈发受到数据体制的形塑。在“城市更新”和“打卡经济”的趋势中,一个借数字地图生产出来的“流动空间”正在信息、人员和资本的流动中形成,它将信息和资本的全球化逻辑接入地方,并很可能在这个过程中,进一步制造出地区发展的不平衡和空间权利的不平等。
文摘Cyberspace is a new spatial realm of activities involving both humans and data,and it has become a cornerstone of the national security of every country.A scientific understanding of cyberspace is essential for analyzing cyberspace incidents,governing cyberspace and ensuring cybersecurity.Accordingly,cyberspace has become a new field of geographic research in the Information Age.Against the backdrop of fierce international competition over cyberspace,there has been an urgent need to strengthen research between the fields of geography and cybersecurity,leading to theoretical and methodological innovations that have created the sub-discipline of cyberspace geography.Cyberspace geography(CG)extends geographical research from real spaces to virtual spaces,and its theoretical basis is the evolution of the traditional geographic human-land relationship theory into a human-land-network relationship theory.CG research includes constructing mapping relationships between cyberspace and real space,redefining the traditional geographic concepts of distance and regions for cyberspace,creating a language,models and methodologies for visually representing cyberspace,drawing maps of cyberspace,and researching the principles governing the evolution of cyberspace structures and behaviors.The technical methods of CG include collecting and integrating data on elements of cyberspace,visually representing cyberspace and conducting cyberspace situational and behavioral intelligence awareness.Intelligence awareness covers cyberspace situational status assessments,network hotspot event dissemination and traceability analysis,and network event situational simulations and risk predictions.CG offers new perspectives on the scientific understanding of cyberspace,the development of disciplines such as geography and cybersecurity,and the creation of national cybersecurity prevention and control mechanisms as well as a community of common future in cyberspace.
基金Supported by the Support Program for 1 0 0 Young and Middle-Aged Disciplinary Leaders inGuangxi Higher Education Institution and SF of Guangxi(GSY0 1 3 5 0 2 7)
