用好QQ的软件管理功能

最近新版的QQ2010里面增加了一个很不错的“QQ软件管理”,它相当于一个系统管理软件,不仅可以安装更新常用软件,还可以来清理系统垃圾文件、开机加速,而且还可以设置家长保护模式,可以让你安心得给孩子使用电脑,下面就来详细介绍介绍它。     

Fertigation in Furrows and Level Furrow Systems. II: Field Experiments, Model Calibration, and Practical Applications

Furrow fertigation can be an interesting practice when compared to traditional overland fertilizer application. In the first paper of this series, a model for furrow fertigation was presented. The simulation model combined overland water flow (Saint-Venant equations), solute transport (advection-dispersion), and infiltration. Particular attention was paid to the treatment of junctions present in level furrow systems. In this paper, the proposed model is validated using five furrow fertigation evaluations differing in irrigation discharge, fertilizer application timing, and furrow geometry. Model parameters for infiltration and roughness were estimated using error minimization techniques. The error norm was based on observed and simulated values of advance time, flow depth, and fertilizer concentration. Model parameters could be adequately predicted from just one discharge experiment, although the use of more experiments resulted in decreased error. The validated model was applied to the simulation of a level furrow system from the literature. The model adequately reproduced irrigation advance and flow depth. Fertigation events differing in application timing were simulated to identify conditions leading to adequate fertilizer uniformity.     

用网易邮箱帮你书写范文

由于工作关系，最近需要写一些公务方面的邮件或者文档，如通知、工作总结、通报等内容，可是这些东西平时都很少接触，那该怎么办呢？其实我们可以通过网易邮箱来轻松搞定。     

玩转动态码率，一张光盘当两张用

国内银行提供的网上银行金融服务已经走入了大众的生活，并在银行与客户之间搭建起一条快速，高效的网络金融通道。网上银行以其方便，个性化的金融服务使客户足不出户就可以完成资金查询、转账等工作，提高了客户资金的使用效益和企业财务人员的工作效率，深受广大客户青睐。     

用酷狗网盘,轻松制作在线歌曲播放器

以前我们可以通过一些另类的网站来给自己的QQ空间、博客或者网站添加在线播放器,可是这些网站的播放器都用不了多久就失效了,很郁闷。现在酷狗推出了一个音乐网盘功能.     

添加其他邮箱到Gmail

在OE中．我们可以添加多个信箱账户来发送信件．这样当一个信箱有问题发送不了邮件的时候．就可以马上更换另一个信箱发送．非常方便。最近Gmail进行了更新．添加了一些实用的功能．里面就有这个多账户功能．就是说我们可以在Gmail中发送以其他信箱为“发件人”的电子邮件．下面就来介绍一下实现的方法。     

打造“千千静听”个性皮肤

千千静听是我们常用的播放软件．它也可以更换界面哦．并且还和Zip打包的Winamp皮肤通用，这样一来我们就可以套用Winamp皮肤来装扮我们的千千静听了．而且还可以对皮肤再进行修改．把自己的一些图片也做到播放器的界面中。     

Fertigation in Furrows and Level Furrow Systems. I: Model Description and Numerical Tests

The simulation of fertigation in furrows and level furrow systems faces a number of problems resulting in relevant restrictions to its widespread application. In this paper, a simulation model is proposed that addresses some of these problems by: (1) implementing an infiltration model that adjusts to the variations in wetted perimeter; (2) using a friction model that adjusts to different flows and which uses an absolute roughness parameter; (3) adopting an equation for the estimation of the longitudinal diffusion coefficient; and (4) implementing a second-order TVD numerical scheme and specific treatments for the boundary conditions and the junctions. The properties of the proposed model were demonstrated using three numerical tests focusing on the numerical scheme and the treatments. The application of the model to the simulation of furrows and furrow systems is presented in a companion paper, in which the usefulness of the innovative aspects of the proposed model is demonstrated.     

上网免费打电话

现在网上可以免费打的电话的网站和软件有不少,但是真正能用的就没几个了,最近朋友推荐了一个可以免费打电话的网站,用了一下果然可以免费打,连国际长途都可以打呢,只需简单的几步就可以轻松实现。     

玩的就是另类

索尼Sountina 说到音箱，咱们大脑里顿时条件反射般地出现两个漆黑长方体的画面。没错，这就是我们固有印象中的音箱。不过天生喜欢撸管子的东瀛人可不这么想，比如索尼。可能是管子撸多了，以至于撸出了风格、撸出了水平、撸出了创意，索尼居然弄出了一个像管子一样的音箱并美其名日晶雅音管。