珠江三角洲区域稳定性的地质环境分析

本文讨论了珠江三角洲的内动力型、内外动力结合型和外动力型三类不稳定地质因素，认为其区域稳定性主要为中等稳定（次稳定）地区。其中，东江断块、番禺、五桂山、珠海三个断隆和新会断陷是区域稳定性较好的地区，灯笼沙断陷、伶仃洋断块和万顷沙断陷是区域稳定性较差的地区，万山群岛断块是区内稳定程度最低的地区。     

东海西湖凹陷反转构造与油气

本文从东海西湖凹陷的地质构造特征出发，根据西湖凹陷所处的西太平洋特殊地质构造位置，结合反转构造理论，认为自新生代以来，西湖凹陷长期处于太平洋板块向欧亚板块斜向俯冲的挤压状态。随时间的推移凹陷的边界条件不断地变化，由此引起应力场的改变，继而造成构造反转。西湖凹陷曾经历过五次构造反转期。盆地的复合，构造的叠加，断层性质的改变，对油气生成、运移和储集起着决定性的作用。本文最后用反转构造理论对油气远景作了简单的探索。认为早期由正断层形成的地堑、地垒、断块及晚期褶皱、逆断层发育的地区应作为油气勘探的重点。前者，早期局部张应力形成的正断层，在区域压应力的持续作用下，后期虽然在形式上还是正断层，但晚期已转变为压性的，对油气聚集较为有利。后者，由于新生代早期的巨厚沉积，并且发育着张性断裂，这些对油气的生成和运移有一定好处。     

泥沙捕集器在长江口航槽区域放投放和观测

本文报道了５套泥沙捕集器在１９８７年８月１３－１７日和１９９０年２月２２－２６日期间在长江口北槽航区域现场投放和观测，集沙杯由有机玻璃制成，内径为５ｃｍ，杯高２１ｃｍ。对在小风情形，小风转大风情形和寒潮大风情形下集沙杯捕获沙样的干重和沙样的中值粒径垂直分布的特征分别作了描述，阱而为大风浪引起航槽游积及其底沙粗化提供了确凿证据。     

Bacterial kinetics and environmental capacity in he Western Xiamen Harbour

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Globalization,Economic Restructuring,and Locational Trajectories of Software Firms in Shanghai

Producer services are traditionally considered as place-bound and clustered in city centers to benefit from agglomeration effects. Such a pattern has been reshaped, however, by the decentralization of the service industry and the development of information and communication technology (ICT), especially for the software industry. This study investigates locational trajectories and underlying factors of software firms from 1990 to 2011 in Shanghai to detect intraurban location trajectories and spatial dynamics. We find that location of the software industry has changed from a monocentric pattern concentrated in the central city area toward a polycentric pattern with a relative decline of the core area. Using a conditional logit model, the study has found that government policies, accessibility, environmental conditions, agglomeration economies, and site characteristics are important determinants of location choice for software firms. In addition, the firm-level survey and in-depth interviews in Pudong Software Park show that government policy and planning, especially rent and tax incentives, have played a vital role in attracting software firms to locate in development zones.     

1961~2010年中国农业洪旱灾害时空特征、成因及影响

搜集并分析了全国29个省份（不包括港、澳、台地区）1961~2010年农业洪旱灾害数据,深入探讨了中国洪旱灾害时空变异规律及其对粮食产量的影响。研究结果表明：中国大部分省份农业洪涝、干旱灾害具有明显的突变和趋势特征。中国中部、中西部及西北部洪涝灾害呈显著上升趋势;西北、东北地区及云南等地区干旱灾害呈显著上升趋势。除华北和东北地区外,洪涝灾害对农业的威胁日益严峻,而干旱灾害则无显著变化。这对中国粮食安全形成了重大挑战,尤其是西部以及北部地区粮食灾损率和灾损量显著上升。降水时空分布发生变化以及人类活动共同影响了中国农业洪涝、干旱时空变化特征。     

Molecular structure parameters and thermal stabilities of benzocarbazoles

The distance between 4-H and adjacent H on the substitutional benzene ring in benzo[c]carbazole was calculated in terms of molecular structure parameters. The result showed that the distance is shorter than the sum of van der Vaals＇ radii of two hydrogen atoms. This means that there is a steric hinderance between them. This effect will make the bond angle stretch and the bond length extend, or cause the molecule to distort, thus making benzo[c]carbazoles become unstable in thermodynamics. On the contrary there is no such effect for benzo[a]carbazoles. This conclusion has been confirmed by the result of calculation of the distance between the same two atoms with software GaussView. So the skeleton of benzo[c]carbazoles in sediments may be breached or isomerized with increasing maturity. It is consistent with the decrease of the ratio of benzo[c]carbazole to benzo[a]carbazole in hydrocarbon migration, suggesting that [c]/[a] not only changes with the distance of migration, but also may be influenced by maturity.     

煤层气井下排采参数及其诊断仪研制要点思考

针对我国目前煤层气评价、勘探、开发中尚存在的理论和实践问题,探讨了影响煤层气评价的排采井内压力、密度、温度、水气混合液流量等重要参数和各参数在井筒中的曲线应有形态,以及获得各参数的煤层气井下诊断仪的研制思路．达到了解煤层气储层各部分的实际工作状态的目的,为煤层气排采井的产水和产气层位以及气、水单独流量和相应的压力的定性分析提供依据。     

基于PCA RBF的风电场短期风速订正方法研究

风电功率预测中最重要的因子是风速,准确的风速预测是风电功率预测的前提和基础。为了提高短期风速预测的准确性,本研究采用WRF模式,对我国上海崇明吕四风电场的风速进行预报。在此基础上,利用PCA-RBF算法结合WRF模式预报风向、气温、气压等气象要素对预报风速进一步订正。实验结果表明,利用PCA-RBF算法对WRF模式预报风速进行订正后,预报风速的误差进一步减小,相对均方根误差降低20%~30%,相对平均绝对误差降低15%~20%。与其他智能算法(BP算法、LSSVM算法)对比分析后得出,PCA-RBF算法对WRF模式预报风速具有较好的订正效果,能够有效提高风速预报准确率。