改进的人

Why is it that with over 60 years of improvements in cameras,lens sharpness and film grain, resolution and dynamic range that no onehas been able to equal what Ansel Adams did back in the 1940s?

为何在60年后的今天，当摄影器材不论是在照相机的功能、镜头的锐利度、底片的细致度以及解析度都已经改进到一定的程度，却仍然没有人能够取代或甚至拍出相同於安塞亚当斯在1940年代所拍摄的作品？

In this paper, we study the rate of convergence of Durrmeyer-Bézier Operaters for functions of bounded variation f and obtain a accurate estimation of coefficient. Our result improves the result of Zeng by making use of probable property of basic functions.

在Zeng等人对有界变差函数f的Durrmeyer-Bézier算子在区间(0，1)上收敛于 1/(a+1f+a/(a+1f 的收敛阶进行研究的基础上，利用基函数的概率性质等方法，对其所给的Durrmeyer-Bézier算子收敛阶估计结果作进一步的改进，得到其收敛阶的精确估计。

In the computation of aerodynamic forces, the present work is based on the work of Morino et al., but the following aspects are improved:(1) In computing the steady transonic aerodynamic load, the steady transonic nonlinear integral equation is solved by relaxation-iteration method in this thesis, instead of solving the time dependent transonic nonlinear integral equation, so that the computing time is saved greatly;(2) The influence coeifficients represented by volume integral are transformed to surface integral by using the Gaussian Theorem, so the analytical form of these coeifficients can be obtained and this leads to be more convenient to analyse and compile computer program;(3) The shock capturing method is used in every time step in present work, no shock moving term is added in the integral equation, so that it is more convenient and simpler to treat.

在气动力计算方面，本文基于Morino等人的工作，作了如下几方面的改进：（1）在计算定常跨音速流场（作为非定常绕流计算的初场）时，本文采用松驰迭代法直接求解跨音速定常非线性积分方程，而不是采用时间相关法求解非定常非线性积分方程，这样大大节省了计算机时；（2）将以体积分形式出现的影响系数化为面积分，并获得解析公式，这样便于分析和编写程序；（3）对运动的激波，本文通过在每一个时间步长上采用激波捕捉法而得到，而不是在积分方程中附加激波运动项，因而处理起来简单方便得多。

In this paper, the bond market listed companies, from government policies, credit rating, the phenomenon of internal control, lack of security bonds, bonds and other varieties of single-level analysis of the corporate bonds of listed companies failed to become the main form of direct financing of the reasons,And from government control, regulate credit rating, improve the ownership structure of listed companies, the implementation of strict enterprise security and bankruptcy system, the bond layer breeds innovation by the listed companies to strengthen the bond financing measures.

本文通过上市公司债券市场的问题，从政府政策、信用评级、内部人控制现象、债券安全性不足、债券品种单一等层面分析了企业债券未能成为上市公司直接融资的主要形式的原因，并分别从加强政府调控、规范信用评级、改进上市公司股权结构、实施严格的企业担保及破产制度、债券品种创新等层而提出加强上市公司债券融资的措施。

It is found that using iron pipe for magnetic screen in Bartlett s experiment is unreasonable,and therefore their experimental conclusion is questionable.

简单地回顾了单极感应现象的历史现状，详细地分析了被认为是判定性的Bartlett等人的单极感应实验，发现该实验使用铁管进行磁屏蔽是不合理的，指出其实验结论是值得怀疑的，并给出可能的改进方法。

On the basis of existing theory, we improve the model brought forward by Stein, et al., study the influence of market overvaluation on company financing and investment and explains some of the problems in the real world.

本文在综述前人成果的基础上，对 Stein 等人的模型进行改进，研究了市场高估对公司的融资、投资行为的影响，解释了一些现实中的问题。

In order to improve the security, a signature scheme based on two hard problem assumptions is proposed. The security of the scheme is based on the difficulties of simultaneously solving the elliptic curve and quadratic residue. A attacker can't forge the signature of messages even if a attacker can solve theelliptic curve discrete logarithm problems or quadratic residue problem in the scheme.

为了提高签名的安全性，本文对Wang等人提出的签名方案进行改进，提出了一个基于椭圆曲线离散对数问题和二次剩余问题的数字签名方案，并对该方案的安全性进行分析，指出在椭圆曲线离散对数问题或二次剩余问题可解的情况下，攻击者也无法伪造消息的签名。

Analysis of Zheng et al's blind signature based on bilinear parings shows that it doesn't satisfy blindness.The improved scheme overcomes the disadvantage of it and also retains the merits of the original blind signature scheme based on bilinear parings.

分析郑卓等人的基于双线性对盲签名方案后发现其也不具有盲性，改进后的方案在保留原方案优点的同时克服了原方案的安全隐患。

The other key question is how to we allow teams to recognize the leaders within their midst, like the QA person who steps up to really cross-train everyone on testing and the QA tools, or the developer that is really disciplined about automation and is frequently improving the productivity of the whole?

另一个关键问题是，团队怎样自己推选出他们的领军人物来，比如一步一步给所有人都进行测试和QA工具培训的QA，或者严守自动化流程纪律，经常改进整体生产力的开发人员。

The research is finite to it at present, which mostly have theCART model of Donoho introducing and the improved model of Romberg et.al.

目前国内外对此的研究还比较有限，主要有Donoho提出的CART模型和Romberg等人基于此的改进模型。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。