造山带概念的演变及它在现今大陆构造研究中面临的问题

造山运动和造山带是应用普遍和影响广泛的两个古老概念,一百多年来随着地球科学的快速发展和板块构造理论出现,情况已发生很大的变化。如何修订这一概念的内涵使之适应新的认识而又保持原定义的首尾－贯正受到普遍关注。作为2000年中国构造地质学发展回顾与展望学术讨论会的一个专题,本文回顾了上述概念产生的历史背景,分析了它们在板块构造理论框架下,特别是在现今大陆构造研究中所面临的挑战;提出并归纳了讨论中形成有关新形势下造山带概念的再理解和应用范围的共识。     

Assessment of liquefaction triggering using strain energy concept and ANN model: Capacity Energy

In the present study, an artificial neural network (ANN) model was developed to establish a correlation between soils initial parameters and the strain energy required to trigger liquefaction in sands and silty sands. A relatively large set of data including 284 previously published cyclic triaxial, torsional shear and simple shear test results were employed to develop the model. A subsequent parametric study was carried out and the trends of the results have been confirmed via some previous laboratory studies. In addition, the data recorded during some real earthquakes at Wildlife, Lotung and Port Island Kobe sites plus some available centrifuge tests data have been utilized in order to validate the proposed ANN-based liquefaction energy model. The results clearly demonstrate the capability of the proposed model and the strain energy concept to assess liquefaction resistance (capacity energy) of soils.     

装备“五性”及其设计思想在测绘装备型号项目研制中的实践

“五性”工程是型号项目研制的重要内容，是装备使用效能、生存能力的重要保障，贯穿于项目研制的全过程。作为测绘保障重要手段的测绘装备发展迅速，具有一定的特殊性。本文结合测绘装备的特点，简述了“五性”及其设计思想在测绘装备研制过程中的实践应用。     

Finite element concept to derive isostatic residual maps — Application to gorda plate and Sierra Nevada regions

A new space-domain operator based on the shape function concept of finite element analysis has been developed to derive the residual maps of the Gorda Plate of western United States. The technique does not require explicit assumptions on isostatic models. Besides delineating the Gorda Plate boundary, the residual maps exhibit a close match both in their anomaly patterns and magnitudes with previously computed residual maps based on the theory of isostasy.     

生态环境地质的基本特点与技术支撑

从现代环境观的角度，阐述了生态环境地质的基本内涵、生态环境地质调查的特点、生态环境地质调查与评价的基本构架及相应的技术支撑体系。     

盆地模拟的系统观与方法论

盆地模拟是近年来在盆地分析领域中迅速发展差的一项仿真技术，本文客观地分析了盆地模拟技术的现状和缺陷，指出了改进的途径，即引入盆地系统的概念，应用系统论（包括耗散结构理论），信息论和控制论（包括灰色系统控制论）的原则与方法，具体地对模拟对象进行系统分析，建立合乎实际的各种地质作用的概念模型；根据选择论的基本原理，将确定性数学模型和随机性数学模型有机地结构起来，并且在处理模糊现象和灰色系统时尽量采用模     

金矿床矿源岩分析的新思路

在分析限定矿源岩含义的内外在因素的基础上,结合桂西北地区具体地质条件和资料,提出了一些研究矿源岩的新方法:岩石孔渗性及微裂隙研究法、成矿元素及其相关元素增亏检验法、成矿温度与地热场温对比分析法等。新的研究结果否定了桂西北地区微细粒浸染型金矿的矿源来自围岩(中三叠统)的认识。     

Anastomosis and the continuum of channel pattern

Anastomosing rivers are characterized by multiple channels separated by islands excised from the floodplain. Their status relative to the continuum concept of channel pattern is assessed with channel pattern defined in terms of three variables—flow strength, bank erodibility and relative sediment supply. Using an ordinal scaling (L(ow)–M(oderate)–H(igh)), the traditional forms of straight, meandering and braided have respective representations of (L,L,L), (M,L/M,L/M) and (H,H,M/H) in terms of those variables. The anastomosing pattern is on average represented by (L,L,M/H) but not so definitively as other forms. Specification of the third element (sediment supply) is particularly hampered by the paucity of data but aggradation, a characteristic of many anastomosing rivers, can be thought of as symptomatic of a moderately high rate of supply relative to the ability for onward transport. A sufficiently high rate of supply to a channel with low flow strength and resistant banks would induce shoaling and/or lateral constriction that locally forces flow out of the main channel and ultimately leads to the cutting of anabranches. A flow regime characterized by concentrated floods of relatively large magnitude is also regarded as highly conducive to the formation of new channels where low bank erodibility constrains channel capacity. Anastomosis may in certain cases represent a transitional form of channel pattern but there is no denying the longevity of some anastomosing systems.     

A Platform for Visualizing and Experimenting with Measures of Semantic Similarity in Ontologies and Concept Maps

This article describes research in the ongoing search for better semantic similarity tools: such methods are important when attempting to reconcile or integrate knowledge, or knowledge‐related resources such as ontologies and database schemas. We describe an extensible, open platform for experimenting with different measures of similarity for ontologies and concept maps. The platform is based around three different types of similarity, that we ground in cognitive principles and provide a taxonomy and structure by which new similarity methods can be integrated and used. The platform supports a variety of specific similarity methods, to which researchers can add others of their own. It also provides flexible ways to combine the results from multiple methods, and some graphic tools for visualizing and communicating multi‐part similarity scores. Details of the system, which forms part of the ConceptVista open codebase, are described, along with associated details of the interfaces by which users can add new methods, choose which methods are used and select how multiple similarity scores are aggregated. We offer this as a community resource, since many similarity methods have been proposed but there is still much confusion about which one(s) might work well for different geographical problems; hence a test environment that all can access and extend would seem to be of practical use. We also provide some examples of the platform in use.     

Interactive Videos Enhance Learning about Socio-Ecological Systems

Two forms of interactive video were assessed in an online course focused on conservation. The hypothesis was that interactive video enhances student perceptions about learning and improves mental models of social-ecological systems. Results showed that students reported greater learning and attitudes toward the subject following interactive video. Moreover, metrics of network complexity applied to students' concept maps of socio-ecological systems increased longitudinally through the course highlighting greater awareness of socio-ecological linkages. We conclude that interactive video can increase awareness of interdisciplinary connections in socio-ecological systems and should be more widely employed in general education geography courses.