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試post by magic

Posted by WaiKeung On February - 18 - 2010

試post,仲可以出tag,正


對TVB的不滿

Posted by WaiKeung On April - 16 - 2009

由於搬屋時未買書枱, 我的電腦只好留在舊屋中, 在沒有電腦的日子裏, 只能看電視啦,剛買了高清盒的時候, 很喜歡看 J2 的節目, 例如 “天才衝衝衝”, “公主小妹” , 但日子久了, 發覺了TVB很多的不是, 不得不在此發洩一下.

1.  以前在勁歌金曲的冠軍歌, 通常都會在二, 三個星期後仍會排在頭十甲, 但為何最近的冠軍歌, 尤其係TVB藝員唱的,  只會出現一星期便無影了? 是金曲, 還是要宣傳的金曲?

2. 當在看娛樂新聞的時候, 為何要mask了鄰台的訪問牌? 感覺非常之小家的一間大台.

3. 最近好似太多飲食節目啦, 叫一些型男美女在節目中大叫” 好好食呀” , 之後如背台詞般說一輪癈話, 第一次看的時候都會被騙倒的, 但看多了以後…算吧…..

4. laughing 哥前傳真的有market 嗎? 假如你在laugher 假死前拍的, 前傳緊隨結局後播出, 在熱潮仍在的時候market 是不錯的, 但現在…看看還在人在玩facebook laughing 的application 嗎?

做大台的可以大量一點嗎? 只會因其他對手的變革而變革, 有用嗎?

亞視最近的改動, 包括高清頻道的中天亞洲台, 會對TVB 做成一定的威脅, 假如TVB仍 一成不變,  很多喜歡新鮮感的香港人, 都會”轉台” 啦~


Faster SSD in Acer Aspire One

Posted by WaiKeung On April - 8 - 2009

I’ve installed FlashPoint SSD beta 3, great improvment of the SSD access speed, any details please refer to http://zflashpoint.blogspot.com/

Beta3 Download link

How to install:

unzip the flashpoint zip file, right click the install.inf -> choose install, and reboot you AAO~


Getting Started with Arduino

Posted by WaiKeung On April - 8 - 2009

A Book for Arduino

Getting Started with Arduino

Link


10 things you should know about networking two buildings

Posted by WaiKeung On August - 28 - 2008

#1: Wireless may not be the best solutionToo often, when a team is contemplating how to connect two buildings, someone will offer a wireless solution. Yes, there are wireless solutions that will connect two buildings, and antenna boosting equipment for better service. However, a hard line connection is more reliable if installed in conduit correctly. Here’s a general rule of thumb: “Use a hard line connection unless you can’t.”

Site-to-site connections using wireless connections are frequently disrupted by an obstruction, weather (in some technologies and applications), or interference. Also, wireless technologies have a shorter lifespan, as replacement technologies are rapidly developing for this market space.

#2: When dealing with conduit, think bigMost building connections today will be a fiber connection in hard plastic conduit. This conduit is usually buried about two feet below the ground. When sizing out what type of conduit to use (even if you’re working with a heavy equipment or installation professional), always think larger than you need.

Consider this example: You can fit the bare cable of fiber optic networking in just about any size conduit. However, if this project is a “one of a kind” type, you may have some price pressure to deliver the best solution for the technology need. When you size up the equipment and supplies, you may require a set of fiber cutting tools to end the line at each point. But the most cost-efficient solution may be simply ordering a to-length fiber optic cable that’s pre-terminated. In this case, you may save a great deal on fiber tools, but you should go up to the next size (and test the entire fit) for pushing a termination through conduit. For a recent project I did, we pulled two SC connectors through 1-inch conduit.

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Best practice
When pulling fiber through a conduit, be careful with the line. Take the following steps to make it easier on the pull:

Get the pull line to the end of the conduit the easy way: Make a small ball of tape, put it in a plastic bag (sandwich size), tape the pull line to it, and pull it through with a medium duty vacuum on the end side.
Have conduit straightened out before pulling the fiber through.
Insulate the header of the cable well with electrical tape. Any pressure will then be taken by the tape instead of the connector or cable.
Have people on each side pulling at the end and feeding the cable into the beginning to minimize stress points.

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#3: Go absolute cutting edge for physical mediaThinking for all future connections, select the best physical connection (usually fiber or multiple fiber lines) for what will be buried. You don’t want to have to dig it up or remove this connection once it’s in place. It makes no sense to run CAT-5 over copper when in a few years, you may remove this medium for the backend of most networks.

#4: Call before you dig!Each state has a “call before you dig” service. A simple Google search of Call before you dig Ohio (or any other state) will take you to the site that can give you procedural information, underground line requirements for your state, and other important facts. When networking two buildings, you will want to use orange markings to identify the connection as a communications system. Most locations use orange for all communications media, but check your local requirements before starting any work and arranging your support staff for the project.

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Important safety note
Digging can be very dangerous, as there are many underground utilities, including gas and electric, that can be deadly. It goes without saying to follow all relevant precautions and enlist the services of heavy equipment and facilities or installation professionals for projects of this nature.

Best practice: When digging, it’s advisable to have a team that’s familiar with operating the necessary equipment to help you lay the conduit. A ditch digger may seem like a fun tool, but enlist your facilities maintenance staff or others more suited to operate this equipment.

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#5: Run extra media through the conduitWhile you’re there, you may want to tag on an extra line or two. For example, if you plan to connect two buildings with a fiber connection, run an extra fiber and maybe a few CAT-5 lines as well. These extra lines may come in handy later. You can group relevant categories of connections in the conduit freely. You can’t, however, run power through these lines–no mixing communications and power types. PoE (power over Ethernet) may be considered a power conduit instead of a communications conduit if you seek to pair it with another type.

#6: Leave a pull string in the conduitIn case you decide to pull another type in the conduit in the future, leave a pull string (even high test fishing line does well) in the conduit. Simply tape it to the header of the piece you’re pulling through and when you feed your fiber or other type in, also feed the pull string.

#7: Avoid the telco whenever possibleIf your buildings aren’t very close together, you may not be able to avoid a telco for the connection. But in short-distance situations, you might be able to work out arrangements with local authorities and property neighbors to coordinate the installations of private conduit. If the two buildings are fairly close, it may be worth the effort and higher initial cost to get a private conduit instead of the ongoing cost of an ISP or carrier service.

#8: Think below protocol layersWhen designing the basic objectives of your connectivity project, don’t think in terms of VLANs and IP addresses at first. You want to establish your connectivity in a way that extends your manageability to the highest level, so focus on Layer 1 and Layer 2 of the OSI model. Who knows, we may dump TCP/IP in a few years anyway for something better, if IPv6 is not well received. You may also consider using WAN protocols for efficiency or segregation on this connection instead of simple TCP/IP configurations.

#9: Share Internet connection pointsThe last thing any IT department wants is an additional monthly payment, so be sure to keep your Internet connection points centralized where possible. Ensure that your networking configuration allows you to manage the access by the different geographical locations (buildings), by user, or by some other manageable mechanism. Also, having two connection points (one in each building and a LAN connection between the buildings) poses a security threat of multiple entry points. However, a case can be made from a disaster recovery or business continuity perspective to have a backup carrier connection in another building, yet accessible.

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Best practice
Be sure that the Internet traffic, or any other traffic, is throttled, cached, or otherwise managed from a QoS perspective if there’s a large number of clients or a lot of traffic in the other connection point.

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#10: Make long-term infrastructure decisions nowFor the network clients in the second building, make decisions about the local name resolution, file server storage resources, e-mail servers, and authentication/directory servers that may be local to the first building. Should the second building involve a small number of clients and less traffic, you may not want to have a true data room there. You can simply extend the back-end services from the primary building. But if the second building will double traffic to your server room–and possibly over a limited-speed connection–you may need to make some of those resources central to the destination.