内蒙古固阳福顺店渣尔泰山群增隆昌组的风暴沉积特征

本文着重叙述了渣尔泰山群增隆昌组的沉积特征和沉积相序特征 ,并对其成因进行了分析 ,区内的增隆昌组白云岩为一风暴沉积相序 ,该相序的发现对进一步研究渣尔泰山群的沉积环境及古地理特征具有一定意义。     

Direct marketing strategies: The rise of community supported fishery programs

Community Supported Fishery (CSF) Programs are arrangements between fishermen and consumers where consumers provide upfront payments to fishermen in exchange for scheduled seafood deliveries. They are modeled after the popular Community Supported Agriculture Programs, a form of direct-to-consumer-marketing in which a group of individuals support a farm. There are multiple market and non-market benefits from these programs. Fishermen receive higher prices for fish, are guaranteed a stable income, and can activate political and regulatory support through direct interaction with consumers. Consumers are provided with access to high-quality novel types of fish and benefit from interactions with the producers of their food. CSFs have frequently collaborated with non-governmental organizations to address the challenges associated with these programs. Under the catch share system in the Northeast US groundfish fishery, sectors may be well-positioned to implement a CSF. Direct marketing through a CSF is not likely to completely replace traditional markets for fishermen, but can be a valuable supplement to their operations.     

Computing the fuzzy topological relations of spatial objects based on induced fuzzy topology

For modeling the topological relations between spatial objects, the concepts of a bound on the intersection of the boundary and interior, and the boundary and exterior are defined in this paper based on the newly developed computational fuzzy topology. Furthermore, the qualitative measures for the intersections are specified based on the α‐cut induced fuzzy topology, which are (A_α∧?A)(x)<1?α and ((A^c)_α∧?A)(x)<1?α. In other words, the intersection of the interior and boundary or boundary and exterior are always bounded by 1?α, where α is a value of a level cutting. Specifically, the following areas are covered: (a) the homeomorphic invariants of the fuzzy topology; (b) a definition of the connectivity of the newly developed fuzzy topology; (c) a model of the fuzzy topological relations between simple fuzzy regions in GIS; and (d) the quantitative values of topological relations can be calculated.     

虚拟现实地理信息系统技术研究

虚拟现实地理信息系统 (VR -GIS)使得地理信息系统 (GIS)的应用和发展方向发生了巨大的变化。结合平时的研究工作 ,在大量参阅文献资料的基础上 ,本文通过对GIS和VR-GIS技术的发展及特点进行分析 ,从海量数据处理技术、虚拟景观的重建和漫游技术、计算机支持的协同工作技术等方面研究了VR -GIS技术的几个热点领域的现状和发展。