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Based on the given securities combination model and the justified general principle of the invertible matrix, the analyze expression formula of securities investment combination right counting was deduced and justified with the examples.
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摘要给出了证券组合模型，在其使对称矩阵与对角矩阵合同的可逆阵的一般规律基础上，推导出证券投资组合给合权数的解析表达式，并给出实例验证。 |
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Based on the global platform of Shanghai International Automobile City.
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依托上海国际汽车城国际平台。 |
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Based on the global stochastic searching method of classic genetic algorithm (GA), and using the diversity preservation strategy of antibodies in biology immunity mechanism, the method greatly improves the colony diversity of GA and has better global sear
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该算法在传统遗传算法全局随机搜索的基础上，借鉴了生物免疫机制中抗体的多样性保持策略，改善了遗传算法的群体多样性，具有更好的全局搜索能力。 |
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Based on the grey-forecasting model with unfixed parameter, the primary model was ameliorated through optimized analysis on the non-equidistant sequence to improve its fining and forecasting accuracy especially when there are only few experimental data.
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摘要针对变参数灰色模型在实验数据少时误差较大的问题，提出了对非等间距序列优化的方法，使原来模型得到改进，从而提高了模型的拟合和预测精度，拓宽了应用范围。 |
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Based on the ground outcrops and drilling core samples, and two-dimensional seismic data in this paper, through a comprehensive evaluation and research of the reservoir characteristics, the authors clarifies that the dolomite of the Upper Sinian Dengying
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以地表露头、钻井资料及二维地震资料为基础，通过储层特征综合评价研究，认为上震旦统灯影组白云岩、下志留统石牛栏组颗粒灰岩为区内的主要储集岩，沉积相、岩溶作用及裂缝发育程度为储层发育的主控因素。 |
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Based on the hardware structure and operation principle of the missile rudder electric loading system, the causation, mathematic model and test method of surplus torque are analyzed.
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基于实时性要求极高的导弹尾翼电动加载系统的硬件结构和控制原理，研究了多余力的产生原因、理论计算和消除方法。 |
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Based on the hardware the transmission fault diagnosis system does the task of data acquisition, analysis and saving to database, and has a good effect.
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整个系统以此为基础，完成了数据采集及后续的分析、存取数据库任务，在实际运行中效果良好。 |
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Based on the historical background and developing process of Shanghai Lilong, the author compares the characteristics of five kinds of Lilong, summarizes three developing directions of modem Lilong of Shanghai and expects to give some design inspiration t
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摘要在对上海里弄住宅产生的历史背景，发展过程进行分析的基础上，对上海里弄住宅的特点进行比较，概括了上海近代里弄住宅发展的三个方向，以期对现代住宅设计起到一定的启示作用。 |
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Based on the historical data of Shanghai port container throughput, forecast models are established by using grey prediction model and cubic polynomial curve prediction model.
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摘要利用上海港国际集装箱吞吐量的历史数据，分别采用灰色预测法和三次多项式曲线模型建立了单项预测模型。 |
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Based on the historical materialism, Marxists have created the theories regarding the relationship among the country, the government and the people, and they have put forward theirs views of the government service functions with different features but the
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在唯物史观的基础上，马克思主义者们构建了各自有关国家、政府与人民关系的理论，提出了各具特色但本质一致的政府服务观。 |
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Based on the historical perspective, this paper analyses the evolution of rural credit cooperatives system and the deep-seated problems in China's rural credit cooperatives reform for a long time, and then comparative analyses the current organization sys
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摘要本文从历史的角度分析了作为我国农村金融主体的农村信用社的制度演进过程，并在此基础上剖析了长期以来我国农村信用社改革的深层次问题，将合作制、股份制和股份合作制等农村信用社产权形式及当前银行组织制度进行了比较分析，提出了我国农村信用社改革的模式。 |
