共查询到20条相似文献,搜索用时 62 毫秒
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主要结合现代企业的特点对智能手机在企业中的应用进行探讨。首先对智能手机功能及应用现状进行背景介绍,接着智能手机的邮件收发功能在企业中的应用进行分析,然后智能手机在协同办公中的应用进行讨论,最后对智能手机在CRM中的应用进行探讨,并对基于智能手机的CRM系统进行详细的分析。 相似文献
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目的 对420不锈钢焊缝进行激光热处理,研究微观结构对焊缝硬度的影响规律.方法 通过光纤激光对420不锈钢进行焊接,然后采用激光对焊缝进行热处理,采用金相显微镜对焊缝微观组织进行分析,并采用显微硬度仪测试焊缝的硬度,采用拉力机对焊缝接头进行抗拉强度测试.结果 随着激光加热功率的提高,焊缝抗拉强度没有明显变化;随着激光加... 相似文献
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张晓娜 《中国新技术新产品》2014,(5):120
本文对宣钢6kV鼓风机站电源优化项目进行了分析,对制定的优化对策、措施进行研究,对其实施过程,实施效果进行分析,并对优化后的效益进行分析。 相似文献
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A method is proposed for estimating the parameters of a mixture of exponential and Weibull distributions for which the accuracy of preliminary estimates obtained by graphical analysis is refined in accordance with the criterion of maximum likelihood. The efficiency of the proposed method is supported by the results of statistical modeling. 相似文献
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An approximate analytical expression is derived for the velocity of the front of the wave of change of boiling modes on a
rod and on a plate. The impact of the Thomson effect and of the heater orientation in the gravity field is included. Adequate
agreement is demonstrated between the derived relations and experimental data. 相似文献
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Liebert A Wabnitz H Grosenick D Möller M Macdonald R Rinneberg H 《Applied optics》2003,42(28):5785-5792
A novel method for the determination of the optical properties of tissue from time-domain measurements is presented. The data analysis is based on the evaluation of the first moment and the second centralized moment, i.e., the mean time of flight and the variance of the measured distribution of times of flight (DTOF) of photons injected by short (picosecond) laser pulses. Analytical expressions are derived for calculation of absorption and of reduced scattering coefficients from these moments by application of diffusion theory for infinite and semi-infinite homogeneous media. The proposed method was tested on experimental data obtained with phantoms, and results for absorption and reduced scattering coefficients obtained by the proposed method are compared with those obtained by fitting of the same data with analytical solutions of the diffusion equation. Furthermore, the accuracy of the moment analysis was investigated for a range of integration limits of the DTOF. The moment analysis may serve as a comparatively fast method for evaluating optical properties with sufficient accuracy and can be used, e.g., for on-line monitoring of optical properties of biological tissue. 相似文献
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水三相点是开尔文热力学温度的唯一基准点,也是ITS-90国际温标重要的定义固定点。因此,水三相点不确定度分析对整个温标的建立、温度量值传递起着至关重要的作用。近3年来,中国计量科学研究院研制出一系列高质量的水三相点容器,加强了水三相点的研究,为不确定度的分析提供了更为可靠的实验依据。同时,不确定度的分析也是客观评价新研制容器性能的一个重要指标。因此,根据实验结果对新研制容器所复现的水三相点进行了不确定度评定。评定结果表明,其扩展不确定度为0.16mK(k=2.69,P=0.99)。 相似文献
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