两类风险过程总理赔量分布的平移伽玛近似

考虑了含两个类的风险过程,首先介绍复合Poisson分布的一些性质,在此基础上给出了含两个类的风险过程总理赔量分布的近似,并对指数理赔分布的情形给出数值计算结果。     

Exploring the sources of design innovations: Insights from the computer,communications and audio equipment industries

Whereas business research has focused on the impact of design innovations on market response and financial performance, the sources of design innovations, as opposed to those of technological innovations, have largely escaped investigation. In this research, we examine the organizational, financial, and environmental drivers of design innovations and how they contrast to technological innovations. Our study utilizes a unique dataset encompassing a 10-year window of innovation output drawn from the computer, communications, and audio and video equipment manufacturing industries. Our results suggest that design innovations are driven primarily by investments in research and development and slack organizational resources. Interestingly, we find that design innovations are more prevalent in smaller but fast-growing markets as opposed to technology innovations, which are prevalent in larger markets. Contrary to expectations, we find no association between marketing investments and design innovations. Our research contributes to the extant business literature by considering the sources of design innovations separately from the sources of technology innovations. We also contribute to the literature by distinguishing design and technology patents, developing a deeper understanding of design innovation, and illuminating a lesser understood source of competitive advantage for firms.     

外来职业农民和本地农户种植多样性差异及影响因素研究

种植多样化是传统农户应对农业风险冲击的有效策略,而外来职业农民驱动下的农业转型发展可能会与本地农户种植多样性存在差异。为分析不同类型农户种植多样性差异及影响因素,本文利用2015年在江苏省南京市通过农户问卷调查获得的393份有效样本数据,以农户种植作物种类数为指标测度种植多样性,采用Poisson（泊松）回归模型进行实证检验。结果表明：① 不同类型农户种植多样性存在显著差异,在保持其他变量不变的情况下,外来职业农民的种植多样性比本地农户少17%;② 种植面积是影响种植多样性的重要因素,种植面积每增加1hm²,种植多样性降低2.7%左右;③ 其它影响农户种植多样性的因素还包括农业生产决策者的年龄、农户地块总数和农户住地到主城区的距离：在保持其它变量不变的情况下,农业生产决策者的年龄每提高1岁,种植多样性提高0.9%左右;农户地块总数每增加1块,种植多样性提高4.6%左右;农户住地到主城区的距离每增加1km,种植多样性提高0.8%左右。     

The dynamic power management for embedded system with Poisson process

The mass of the embedded systems are driven by second batteries, not by wired power supply. So saving energy is one of the main design goals for embedded system. In this paper we present a new technique for modelling and solving the dynamic power management （DPM） problem for embedded systems with complex behavioural characteristics. First we model a power-managed embedded computing system as a controllable Flow Chart. Then we use the Poisson process for optimisation, and give the power management algorithm by the help of Dynamic Voltage Scaling （DVS） technology. At last we built the experimental model using the PXA 255 Processors. The experimental results showed that the proposed technique can achieve more than 12% power saving compared to other existing DPM techniques.     

一种新型分数有理Bézier曲线

Based on rational Bézier curves given by Ron Goldman, a new fractional rational Bézier curve was first defined in terms of fractional Bernstein bases. Moreover, some basic properties were dicussed and a theorem connected to Poisson curves was obtained.Some examples in this paper were given by the visual results.     

下肢优势侧评定方法的比较研究

目的:探索在5种评定方法下下肢优势侧和非优势侧的侧别差异。方法:采用26名健康男性作为受试者,每名受试者进行5种评定方法下下肢优势侧和非优势侧的评定,对5种评定方法下下肢优势侧和非优势侧的相关指标进行分析,利用相关分析对所采集的下肢优势侧和非优势侧数据进行分析。结果:5种评定方法在进行下肢优势侧和非优势侧评定时均具有有效性,其中单腿前跳对称指数和单腿纵跳对称指数在评定下肢优势侧和非优势侧时呈显著性正相关,向心/向心180°/s时膝关节屈肌力量对称指数和伸肌力量对称指数呈显著性负相关,单腿纵跳对称指数和向心/向心180°/s时膝关节屈肌力量对称指数呈显著性负相关,其余两两指标之间均未表现出相关性。结论:在进行下肢优势侧和非优势侧划分时,使用不同的评定方法会产生不同的划分结果,因此在进行下肢优势侧与非优势侧对运动影响方面的研究时要合理的选择评定方法。     

两类风险过程总理赔量的Bower的Gamma函数近似

考虑了含两个类的风险过程,首先介绍了复合Poisson分布的一些性质,在此基础上给出了含两个类的风险过程的总理赔量的Bower的Gamma函数近似．