月度归档： 2014 年 7 月

Time for ConnectedFlight?

Black Thursday for air lines? Last Thursday, MH-17, yes Malaysia Airline again, was shot down. This Thursday, AH-5017, Algeria Airline, crashed in Mali.

These incidents happened only 4 month after the disappearing of MH-370, for which no one has a clue yet.

Only after MH-370 did people realize that modern air plane is not so modern after all. Inter-continental air plane cruise above oceans are more like ballistic rocket than guided missile.

Actually not all air lines are that primitive. I’ve tried the WIFI service on Emrite’s A380, it’s rather decent. So technically this shouldn’t be a issue. For tracking the position of the air plane, something 16kbps should be enough for each plane. Let’s say at any time there are 50,000 air planes on the sky, we need a 800Mbps satellite link – hmm, shouldn’t be so difficult to get. If I remember correctly, one satellite can typically provide 1Gbps.

With this “ConnectedFlight”, at least I’ll know the position if a air plane disappears. Should I register this trade mark now? 🙂

Office Open XML小试

尝试了一下微软的Office Open XML，发现功能是挺全面了，很多之前用Word宏实现的自动化操作，可以用Office Open XML实现了，微软的Office总算在开放性方面迈出了一大步。

顺便仔细看了一下docx的实现，这xml可是够复杂的，不知道为什么微软要设计成这样样子:-(。

即使使用Office Open XML，要想插入一个脚注格式，需要增加三层xml elements：

XmlElement element1 = xd1.CreateElement(“w”, “r”, Class1.namespaceURI);
XmlElement element2 = xd1.CreateElement(“w”, “rPr”, Class1.namespaceURI);
XmlElement element3 = xd1.CreateElement(“w”, “vertAlign”, Class1.namespaceURI);
element3.SetAttribute(“val”, Class1.namespaceURI, “superscript”);
element2.AppendChild((XmlNode) element3);
element1.AppendChild((XmlNode) element2);

这三个元素分别是run，就是一段格式一致的文字；rPr是run property，代表这一段文字的格式属性集合；vertAlign就是Vertical Alignment垂直方向的对齐属性。。。

有时间考虑用Linux + Mono处理word文件，就比Windows灵巧的多了。