Computer and Internet Technology

Do you want to put on or loose weight?

2009-06-22T10:17:00.001-07:00

A very interesting app named FitOrbit, it’s business model is very clear, just like other online human training program app. Check it out.

Mobile Application Marketing Distribution

2009-06-20T14:52:00.001-07:00

iphone almost dominate the mobile application market according to this from flurry.

Look forward to the commercial using for these

2009-06-20T11:22:00.001-07:00

Barcode simplified the easy unique identify and sharing the product info. Check it out.

Interesting Trend Diagram

2009-06-19T17:10:00.001-07:00

This diagram from baekdal somehow discribes the human media delveopment, although someone think it’s bullshit.

Musicane Taylor Swift

2009-06-17T23:17:00.001-07:00

The internet is the computer.

2009-06-12T18:02:00.001-07:00

Windows 7 EU 版本不带 Internet Explorer, 请看来是Mashable的Comment

No browser!? How the hell are you supposed to get an alternative browser - Firefox, Opera, any browser - without a browser?

仔细回想一想，现在的电脑离开了网络就像，一台电脑没有了图形界面回到DOS时代。现在的个人数据已经基本上转移到了网上，邮件、文档、图片、电影、联系人、甚至是游戏，稳定的网络让你基本上不用担心你某一天硬盘挂了的惨剧。现在已经不用向当年到处Copy软件和资源，刻成硬盘，现在所有的东西，都可以放在公共的网站上，或者私人的网络存储上。Google给个人提供了充足的存储空间，Gmail、Google Doc、PicasaWeb，这些都是免费的午餐，Amazon EC2可以提供给你私人或商用的极其廉价的存储，你可以获取和存储任意格式的文件到它的上面，同时可以作为你的Application Host，发布你的资源或者网站。

JoliCloud, WebOS?

2009-06-10T11:56:00.001-07:00

和Chris讨论关于我一直想做的个人终端的时候，他提到JoliCloud。是一大发现，已经有人在开始实践和推广这种残产品了，对于用户来说，Windows Applicaton和Web Application的差别已经不大了，用Web OS可以很好的解决跨平台问题，毕竟Html和Javascript不论在Windows, Linus, Mac, Sybiam, Iphone 等所有固定终端和移动终端都支持，只要有网络，你可以随时摄取和存储你的信息。

真正的Web时代已经隐约可见了

2009-06-06T23:15:00.001-07:00

最近一直在搜索如何更有效的发布和共享你的网络发现，现在比较多的是通过Bookmarklet或者在信息页面嵌入Share Button。这些方式对于用户来说都不是很连续，各种服务分布在不同的网络位置，用户需要通过各种途径来进入各种服务，然而这些服务并不具有连贯性，直到我今天看到Ubiquity from ，才发现了这才应该是我想要的，请看这里有一个非常不错的Video。

随着网络应用服务的日益丰富和标准化，用户的日常生活和办公将逐渐建立在任何有网络存在的地方，已经可以看到基于Linus的Palm Pre Web OS，这是一个精彩的Debut。以后的浏览器将变成操作系统，在它的上面可以安装和使用各种应用，而同时你不要考虑数据的存储问题，得益于Amazon EC2或者Google Data Service等Cloud。

070807 PPolis at Youth Cafe

2009-06-06T18:26:00.001-07:00

Check out this SlideShare Presentation:

070807 PPolis at Youth Cafe

View more Microsoft Word documents from nchild.

Today's song

2009-04-30T16:35:00.000-07:00

Love Story
by Taylor Swift
from the album Fearless

Song of today

2009-04-29T18:40:00.001-07:00

Kellie Pickler |MTV Music

the top country song from Keith Urban - Sweet Thing

Toby Keith the hit “God Love Her”
http://new.music.yahoo.com/videos/--201995237

复旦辰光DotNetTeam博客成立篇

2007-05-04T06:38:00.001-07:00

记得去年5月份的时候当时还没有人知道.net 3.5的时候，我已经开始使用DLINQ进行一个项目的开发，每逢问题发生都只有在Microsoft Forum提问才可以得到答案，经过多次CTP的增强，才有了如今的Orcas beta1里面的LINQ。目前博客园的各种技术文章实时性很强，微软有什么动静，马上就有人会报告到博客园上，这点很好，如果你是一位DotNet技术入门的人，那么这里是你技术知识的报纸，每天每周你可以阅读它。然而如果博客园多一些将最新的技术使用到真实项目中的文章，那么就算比较完美了，对于那些已经是骨灰级任务的人也有了回到这里的理由。

还记得有一位作者画过这样一张图，他把新技术使用的人/公司分为四个阶段，开拓者（吃螃蟹）、跟随者、使用者、被迫使用者。实际情况一般公司大部分都是使用者，即在技术已经完全成熟后才开始使用，这是非常正常的。然而采用新技术往往可以给你带来意向不到的突破，因此对于小团队或新型公司将新技术能够较早较快地投入生产当中，往往会获得较大的回报，当然我的前提是这个团队具有较深的技术背景和知识学习能力。

我们的团队已经建立了一个月，正在设计开发一个大型项目（出于公司角度，暂时无法透露项目类型和名称），项目采用了大量微软最前沿的技术，项目产品具有多级分布式结构，采用SOOS的思想与Smart Client的实践相结合，可以算是吃螃蟹的团队，并且是准备用螃蟹当正餐的团队，而不是仅仅是品尝螃蟹滋味而已。希望能够从今天起给大家介绍积累下来的更多实际吃螃蟹的知识和技巧。下面是我们采用技术的清单。

利用Visual Studio Orcas进行Service开发

利用Visual Studio 2005 + Software Factory Plugin进行Client端开发

利用Microsoft Expression Blend 作为WPF界面IDE

利用SQL Server 2005进行数据存储

利用SQL CE 2005进行客户端数据存储

利用Team foundation server 进行源代码管理，文档管理，需求管理，缺陷管理

利用WCF和WSE3.0进行通讯

利用WWF进行工作流开发

利用IOC进行Shell结构设计

利用Winform2.0和WPF进行客户端界面开发

利用Microsoft Enterprise Library for .net 2.0作为程序基础模块

利用SCSF(Smart Client Software Factory) 和CAB(Composite UI Application Block)进行客户端界面开发

利用WSSF(Web Site Software Factory)和UIP(User Interface Process Application Block)进行界面流程开发

利用Reporting Service进行报表开发

利用Asp.net2.0+Ajax1.0进行网站界面开发

利用LINQ to ADO.net进行数据访问层开发

利用Synchronizer进行数据同步

利用UAB或ClickOnce进行数据同步参考和软件更新参考

利用Eclipse, SharpDevelop进行Shell结构参考

利用Microsoft Project, Microsoft Outlook, Mindjet 进行时间计划管理的参考

…

经过了一个月的设计和实践，如何作Architecture级别的抉择有了不少心得，例如是选择Smart Client还是Asp.net+Ajax，支持离线数据还是中央数据存储，各子系统之间是Dll直接访问还是WCF Service访问。在技术使用层面，现在我们已经能够很好地把握和使用Linq to Entities(EDM)，SCSF等技术的各项特性，会在今后的Session中不断和大家分享。

最后，希望我们的团队能够和大家一起踩在巨人的肩膀上，发挥东方人自己的创造力，营造属于中国的新一代软件企业。

Pic

2007-05-03T22:43:00.001-07:00

Post from office 2007

2007-05-03T22:41:00.001-07:00

2005-12-14T00:57:00.000-08:00

happy holiday

2005-12-02T19:39:00.000-08:00

The friendly user interface from cnet

2005-12-01T03:23:00.000-08:00

Temperature dropping

2005-11-29T03:39:00.000-08:00

PGS china team

2005-11-28T06:39:00.000-08:00

Code Lib: My personal KM tool

2005-11-27T18:27:00.000-08:00

I'm installing it for a spin right now

2005-11-27T18:26:00.000-08:00

I'm installing it for a spin right now

2005-11-27T17:36:00.000-08:00

Google goes crazy

2005-11-26T22:44:00.000-08:00

Earthquake in JiangXi, from Sina

2005-11-26T07:11:00.000-08:00

Micky

2005-11-26T06:50:00.000-08:00

2005-11-24T17:31:00.000-08:00

Happy Thanksgiving!

2005-11-24T02:27:00.000-08:00

Everyday's vedio source

2005-11-22T20:57:00.000-08:00

Blogger with word

2005-11-22T20:55:00.000-08:00

Hello + picasa : www.hello.com

2005-11-22T20:17:00.000-08:00

linus icon

2005-11-22T20:06:00.000-08:00

linus at Nature History Meusem

Switching from MSN space to Blogger.com

2005-11-22T19:51:00.000-08:00

Switching from MSN space to Blogger.com
After trying new set of blogging and picture sharing tools, including blogger.com, blogger for word, hello+picasa, flickr. I decided to quit the domain of Microsoft blogging field, follow google for the following reasons:

blogger has more flexible template definition tools, it gives you ability to manage you site appearance in html code level

blogger from word really improve my productivity of blogging, in contract to the old msn space’s online editing or email publishing. Now you can take advantage of word’s powerful editing capability

hello+picasa indeed brings picture uploading and sharing process into a new era, instead of spaces’s loose resolution picture sharing.

xml communication indicates the Web 2.0’s coming, you can use a bunch of tools not matter you are online, or in word, or hello, or any other xml-aware tools

personal belief that google’s fasting growing and effect of rapid evolution process including new technology implementation and fresh tools

etc.

Here is the process of my blogging history.

博客.CN 2004/4 – 2005/4

MSN Space 2005/7/2 – 2005/11/23

Blogger.com 2005/11/23 - Now

Now this is my newly fresh blogger coming from blogger.com. http://linuszhu.blogspot.com/

My current set of tools

Blogger.comhttp://linuszhu.blogspot.com/

hello+picasaaccount : polease

MSN Messengeraccount : linjohnston@hotmail.com

Skypeaccount : linuszhu

Email linuszhu@gmail.com

Flickrhttp://www.flickr.com/photos/polease/account : linuszhus@yahoo.com.cn

FolderShareaccount : linuszhu

Live.comaccount : linuszhu

My personal link

using to post my personal diary and featured picture

using to organize and share my photo album
using to organize and share my personal favorate link

DataSet as webservice passing object tuning

2005-11-22T18:50:00.000-08:00

DataSet as webservice passing object tuning
Linus
2005-11-20

Background
SmartClient technology now is very common used in the new era of SOA infrastructure, as publishing a webservice to the whole world, getting rid of bothering issue like firewall, has become a piece of cake.
In .net, Microsoft gives birth of dataset, originated from recordset, which struts its stuff in the world of data binding. DataSet, usually represents a portion of relation table data, could contain a considerable amount of data returned from database. When passing this kind of large object by web service, due to the inborn issue of http communication regarding to TCP/IP (the performance issue), it would bring a headache for your app’s performance, especially critical in a slow network environment.
Practices

.net dataset serialization

  I was planning to using binary serialization instead of xml serialation after I found out that most of SOAP package data are xml tags. But things are not that easy.
  In .net framework 1.1, drilling down the implementation code, you could discover that, the framework would use XmlSerialization, even if you choose BinaryFormatter, to serialize the dataset. Let’s check it out as the following.
void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context)
{
      string text1 = this.GetXmlSchemaForRemoting(null);
      string text2 = null;
      info.AddValue("XmlSchema", text1);
      StringBuilder builder1 = new StringBuilder(this.EstimatedXmlStringSize() * 2);
      StringWriter writer1 = new StringWriter(builder1);
      XmlTextWriter writer2 = new XmlTextWriter(writer1);
      this.WriteXml(writer2, XmlWriteMode.DiffGram);
      text2 = writer1.ToString();
      info.AddValue("XmlDiffGram", text2);
}
  You can see that it would append xml schema, following by the dataset xml data. When the dataset is a pretty complex one, I found out that the schema would result in 15K bytes transportation.
  Microsoft has already noticed this problem. In .net framework 2.0, binary serialization is pretty small than the old version, because it does NOT use xml serialization as binary serialization again.
private void SerializeDataSet(SerializationInfo info, StreamingContext context, SerializationFormat remotingFormat)
{
      info.AddValue("DataSet.RemotingVersion", new Version(2, 0, 1));
      info.AddValue("DataSet.RemotingFormat", remotingFormat);
      info.AddValue("SchemaSerializationMode.DataSet", this.SchemaSerializationMode);
      if (remotingFormat != SerializationFormat.Xml)
      {
           …
            for (int num1 = 0; num1 < this.Tables.Count; num1++)
            {
                  this.Tables[num1].SerializeTableData(info, context, num1);
            }
     …
      }
…
}
  Of course, I should try another way, because we are using .net framework 1.1. That results in the following tricky means.

Compressed webservice communication

In accident, I figured out, when I zipped my response data, it’s size would become about 7 times less than the original. So I start to put this method, what I called compressed webservice communication, into practice.

Change the WebService WebMethod a little bit, returning a string instead of DataSet

      [WebMethod]
public string GetInitializedTestObject()
{
      TestObject obj1 = new TestObject();
      StreamReader reader1 = File.OpenText(@"C:\Documents and Settings\zhuzhlin\Desktop\SmartClientTuning\SendReceiveData.xml");
      obj1.name = reader1.ReadToEnd();
      reader1.Close();
      string text1 = Data.GetXmlSerializedString(obj1);
      obj1.OrignalXmlSize = text1.Length;
      text1 = Data.Compress(text1);
      obj1.CompressedBase64Size = text1.Length;
      text1 = Data.GetXmlSerializedString(obj1);
      return Data.Compress(text1);
}

Change the client a little bit

public Fdms_webservice.TestObject GetRealInitializedTestObject()
{
      string text1 = this.GetInitializedTestObject();
      text1 = Data.Uncompress(text1);
      return (Fdms_webservice.TestObject) Data.GetXmlSerializedObject(typeof(Fdms_webservice.TestObject), text1);
}

  The result was astonishing, using Ethereal you would discover the data package dropped from 182K to 11K. And our result performance upgrades from 14seconds to 3 seconds average. Awesome!
(image placeholder)
Tools

Reflector

ICSharpZipLib

2005-11-22T18:32:00.000-08:00

Cool picture publishing and sharing system, both in terms of friend or robot. Check it out here
!

2005-11-22T18:22:00.000-08:00

I just want to publish a diary

2005-11-22T18:11:00.000-08:00

Alamo

2005-11-22T18:10:00.000-08:00

scenic railway