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关键词： Bragg reflector   eigenproblem   laser   microcavity   threshold   transfer matrix   VCSEL  

摘要： Optical modes and associated linear threshold values of material gain bringing them to lasing are investigated for a VCSEL-type cavity with a quantum well, sandwiched between two distributed Bragg reflectors. They are found as solutions to a specific novel eigenvalue problem with the "active" imaginary part of the quantum well refractive index. For the calculation of the Bragg mirror reflection coefficients, well-established method of the transfer matrices is used. The presented results accurately quantify intuitively predictable lowering of the modal thresholds for the modes whose lasing frequencies lay inside the reflectors rejection bands. Besides, they demonstrate that this approach automatically incorporates the account of overlapping between the active region and the modal E-field patterns and its effect on the thresholds.

关键词： 数学分析   高等学校   教材  

ISBN: (纸本)9787560920276

摘要： 本书是第二版，是针对我国各重点院校对数学教学的要求及教学实际 予以修订的。上册内容为一元函数微积分和微分方程，下册内容为空间解 析几何、多元函数微积分及无穷级数，每节末附有习题答案与提示。 本书与一般工科《高等数学》教材相比，适当地补充了实数基本定理 、一致连续性、一致收敛和含参量积分等内容，加强了微积分的理论基础 ；注重无穷小分析等数学思想的讲解和应用；在数学逻辑性、严谨性及抽 象性方面也有相应要求和训练；引进现代数学语言、术语和符号，为读者 进一步学习现代数学理论和方法提供了帮助；同时注重学生的工程应用意 识的训练，培养学生应用数学解决实际问题的能力。 本书结构严谨、条理清晰、通俗易懂、例题典范、习题分层、可读性 强，便于使用。适用于理工科(非数学)专业中对数学要求较高的专业使用 ，若略去部分内容也完全适合一般工科专业使用。

ISBN: (纸本)9787560921228

关键词： 数理科学和化学   数学   数学分析  

ISBN: (纸本)978756232

摘要： 本书的内容有: 函数与级限, 函数的导数, 导数的应用, 不定积分, 定积分, 定积分的应用, 常微分方程等内容。

关键词： Genetic programming  

摘要： A mathematical analysis was conducted of all structural genes in DNA to detect the deviance of the genetic code. Two genetic code theorems were used to establish two functions where all the reassigned codons in some deviant codes participate. The human genome includes more than 25600 genes. The human cell involves two different types of DNA whose structural genes are coded by different genetic codes. Permutation was conducted on these genes to detect deviance of genetic codes. The potential of genetic code was analyzed, which was used to block all sequences that are alternative to a given gene. An integral characteristics β of a gene, defined as the ratio of the total number of ter codons that block sense codons in a gene were also introduced. Additional computations were also performed to confirm numerical value of the analysis. Results show that all the reassigned codons affect genetic codes in blocking.

ISBN: (纸本)9787562440802

关键词： 自学考试   高护   护理学   临床医学   计算机应用基础   课程优化   山东省   多维分析   数学分析  

摘要： 　　山东省高等教育自学考试护理学(独立本科段)自2000年开考以来,考试主管部门对课程的设置和考核方式进行了不断的修订完善,使考核更贴近考生的实际.潍坊医学院作为山东省高等教育自学考试护理学(独立本科段)的主考学校,承担了一些课程的考核和考生毕业环节考核工作.2005年6月,向中国高等教育学会自学考试分会申报的"山东省高护自学考试成绩多维分析对其课程优化的影响"课题被批准立项(课题编号[2005]29).按照课题的研究方案,各研究阶段的工作进展顺利,取得了一些研究结果,现对研究的结果进行报告分析.……

关键词： 反证法   数学分析   逻辑依据  

摘要： “反证法”是一种简明实用、间接的数学证明方法,也是一种重要的数学思想方法。介绍了“反证法”的逻辑依据和步骤,并列举了数学分析中宜于用“反证法”证明的问题,同时指出了使用“反证法”应注意的几个问题。

关键词： adenosine diphosphate   rate of oxidative phosphorlylation   Michaelis-Menten constant   hypoxia   brain  

摘要： The kinetic dependence of the rate of oxidative phosphorylation (ADP/t) on the concentration of exogenous ADP has been mathematically analyzed in the brain mitochondria. This relationship has been approximated by a mathematic model under various vital conditions. We propose an analytical approach to calculating the characteristics of oxidative phosphorylation and predicting the kinetics of oxidative ATP synthesis in brain mitochondria of animals subjected to hypoxia.

ISBN: (纸本)9787810936071