M／M／1驱动的流排队中的连分数方法

考虑了一类由M／M／1队列驱动的流排队模型,其中的输入过程是一马氏调节率过程．通过概率结构的分析,构建了模型的微分方程．运用拉氏变换和连分数的方法求得了缓冲器容量的稳态分布．     

浅谈简单连分数形式的一种推广

从简单连分数[a0，a1，a2，L]出发，把连分数中的分子从1推广到正整数，从而得到另一种形式的简单连分数，继而讨论其渐近分数的有关性质及连分数与实数的互化关系，推广后的连分数在某些方面的讨论比原来的连分数要简洁些。最后应用它来解某些二元一次不定方程和计算平方根的近似值。     

关于提高继教教学效果的对策

提高继续教育的教学效果 ,教师要切实把“研训一体化”作为教学的指导思想 ;要潜心地对教学内容进行优化整合 ;要注重发挥“情感互动”在教学活动中的作用 ;要及时地遵循教学活动的轨迹 ,去反思、认识和提高自己     

Volumetric fraction measurement in oil-water-gas multiphase flow with dual energy gamma-ray system

INTRODUCTION Oil-water-gas multiphase mixed transport in oil pipe is extensively used in ocean oil industries. How to measure the volumetric fractions of oil-water-gas multiphase flow is an important subject of study in the oil industry. Related research work was started in the 1980s. The measurement of component ratios in multiphase flows using γ-ray attenuation was first suggested by Abouelwafa and Kendall (1980), and the technique has been used in many current com- mercial multiphase…     

“绿色GDP”战略与我国经济的可持续发展

随着中国经济的迅速崛起,中国目前面临的能源消耗与环境污染压力日益增大,如何实现中国未来经济持续增长和社会健康全面发展,实现全面建设小康社会的战略目标,成为中国目前需要急需解决的战略问题,而解决该问题的一个重要思路就是实施“绿色GDP”战略。本文在介绍国内外“绿色GDP”已有的研究成果基础上,从能源消耗、污染状况、可持续发展三个角度分析了我国实施“绿色GDP”的客观必要性,最后本文提出了我国实施“绿色GDP”战略的对策建议。     

SNS采纳后阶段用户持续使用行为研究——基于情感依恋与ECM-IS的整合模型

SNS采纳后阶段的持续使用行为是SNS成功的关键,本研究提出情感依恋在用户持续使用意向形成过程中起关键性作用,用户的持续使用意向将受到情感与认知的双重作用。在整合ECM-ISC模型以及情感依恋相关理论、依恋强度ARC模型、情感扩建相关理论的基础上,构建了概念模型,以微信朋友圈经验用户为调研对象,进行了实证研究。研究结果表明：改进后的模型具有更高的解释力,感知有用性、满意和情感依恋对持续使用意向有显著影响,并间接影响用户的持续使用行为。用户关联、能力以及自主需求的满足会促使用户产生情感依恋并在情感扩大机制的作用下促使用户产生持续使用意向,同时满意度对于情感依恋也具有显著的正向作用。     

Werner-Type Matrix Valued Rational Interpolation and Its Recurrence Algorithms

In this paper, a practical Werner-type continued fraction method for solving matrix valued rational interpolation problem isprovided by using a generalized inverse of matrices. In order to reduce the continued fraction form to rational function form of the in-terpolants, an efficient forward recurrence algorithm is obtained.     

非线性混合整数规划的罚函数解法

文[6]中，我们对非线性混合整数规划的解法进行了探讨，利用罚函数把有约束非线性混合整数规划问题化为等价的无约束非线性混合整数规划问题，然后把离散整变量连续化，从而非线性混合整数规划化为与之等价的无约束非线性规划。本文弱化了文[6]中定理1的条件，并得到了相应的结论。     

关于Diophantine方程(4/n)=(1/x)+(1/y)+(1/z)

利用分数的单位分数分拆技巧,讨论了Diophantine方程4/n=1/x+1/y+1/z,证明除了mod 840的11个剩余类的例外情形,Erdos猜想成立。     

Brain type natriuretic peptide (BNP)—A marker of new millennium in diagnosis of congestive heart failure

The burden of disease in patients with congestive heart failure is high. The future of BNP looks promising as it may be a better diagnostic tool for the diagnosis of CHF in developing countries in new millennium. Natriuretic peptide hormones, a family of vasoactive peptides with many favourable physiological properties, have emerged as important contenders for development of diagnostic tools and therapeutic agents in cardiovascular disease. Measurement of B-type natriuretic peptide has become as an easy-to-perform bedside test. The clinical and diagnostic significance of the measurement of plasma Nt-proBNP in the diseases of the cardiovascular system with particular emphasis on the assessment of patients with heart failure and their effects on predicting survival rate. The plasma levels of Nt-proBrain Natriuretic peptide responds more vigorously after myocardial infarction than those of other natriuretic peptides. This article is an attempt to give a short overview on the utility of BNP-blood levels for the diagnosis and treatment of heart failure