Dizhen xuebao, 2021 在进行未来破坏性地震的强地面运动数值模拟时，震源参数选取的准确性对地震动预测的结果影响很大。震源参数的确定存在很多不确定性因素，既包含随机的不确定性因素，又包含认知的不确定性因素。本文在大量地震事件及文献调研的基础上，运用统计学方法对具备随机不确定性特征的震源参数进行统计研究，以震源参数经验公式的形态建立解释其随机性和不确定性的数学模型。为了研究局部地区震源参数的定标关系特征，获得更加适用于局部地震密集区域，尤其是包含中国大陆地区在内的局部区域的震源参数的经验关系，本文从GCMT地震目录中选取了1 ...
Zongchao Li +4 more
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西班牙语专业词汇学课程建设研究—以四川外国语大学为例 [PDF]
, 2022 Under the guidance of the theory of needs analysis, focusing on the necessity of the lexicology courses in Spanish, the allocation of curriculum term, the curriculum content and the teaching resources, etc.. this paper has made a net questionnaire survey
Wen, Hui, Xiao, Qiuyue
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Application of digital terrain analysis to the study of cerebral cortex morphology [PDF]
, 2023 Objective·To propose a theoretical method based on geosciences for the expression and quantitative description of the surface morphology of the cerebral cortex.Methods·Eighty-five samples of normal cognition (NC) and 84 samples of Alzheimer′s disease (AD)
CHEN Nan, LIN Siwei, YANG Zihao
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Risk Assessment of Highway Flood Disaster in Central Chongqing City Based on Extension Cloud Model [PDF]
, 2022 [Objective] The fuzziness and randomness of highway flood risk indicators, and transform highway flood risk evaluation indicators from qualitative descriptions to quantitative values were analyzed in order to improve highway flood risk prevention and ...
Chen Lin +4 more
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Landscape Ecological Risk Assessment of Ya’an-Kangding Expressway Based on PLUS Model [PDF]
, 2023 [Objective] The regional landscape ecological risks were evaluated, and their spatiotemporal variation was analyzed in order to provide important support for reducing regional ecological risks, maintaining regional ecological security, and promoting ...
Li Xu, Liu Jingjing, Peng Peihao
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Process and Correlation Between Ecosystem Services Value and Ecological Risk in River Basin [PDF]
, 2022 [Objective] The spatio-temporal pattern and interrelationship between the value of ecosystem services and ecological risks in river basins were analyzed in order to ensure healthy and sustainable development of ecosystems, maintain regional ecosystem ...
Bi Shanshan +5 more
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Spatiotemporal Characteristics and Driver Detection of Landscape Pattern and Ecological Risk in Huangshui River Basin [PDF]
, 2023 [Objective] The characteristics and driving factors of landscape pattern changes and the spatiotemporal evolution of landscape ecological risk was analyzed in order to provide a theoretical basis for integrated watershed management, watershed ecosystem ...
Li Runjie +3 more
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Research on the Relationship Between Spatial Distribution of Housing Price and Infrastructure Level [PDF]
, 2017 为了探究厦门市岛内普通住宅房价的空间分布与基础设施水平的关系,运用Arc GIS得出最邻近指数、全局的Moran I指数和局部聚类与异常值情况,揭示普通住宅的空间聚集和房价空间自相关现象;通过数据统计分析、克里金插值和趋势分析,得到厦门岛内房价多中心分布状态及其演变规律。实现了基础设施水平空间结构的地理表达及整体评价,并基于双对数回归模型和地理加权回归模型,揭示影响房价空间分异的各类基础设施因子的不同影响情况。In order to explore the relationship between ...
周红, 曾祎瑾
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Evaluation and Source of Heavy Metal Pollution in Surface Soils in Typical Alpine Agricultural Areas of Qinghai Province [PDF]
, 2023 BACKGROUNDHeavy metal pollution in soils is often the result of multiple genetic sources and action paths. Simple identification of the sources of heavy metals is not enough to provide sufficient information for the control of regional heavy metal ...
Jianqiang LI +5 more
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Research progress on electromagnetic spectrum multidimensional situation compressed mapping technology [PDF]
, 2023 In the increasingly complex electromagnetic spectrum environment, accurately obtaining comprehensive spectrum situation is a crucial prerequisite for making precise spectrum decisions.First, the spectrum mapping was introduced and compared with spectrum ...
Bo ZHOU +4 more
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