Here's a puzzler, how to improve reception on iMac Flat Panel, w/built-in

Here's a puzzler, how to improve reception on iMac Flat Panel, w/built-in airport card. I have done alot of research into cantennas and the like, including parabolic dishes etc. I am trying to connect to my friends open network a few houses away but get sporadic signal most of the time. Just for fun i took a piece of aluminum foil and fashioned a curved dish and saw the signal strength spike to more than double sometimes. Does anyone have any thoughts or suggestions on this. Since i am on the all in one iMac (the half sphere base style) Flat Panel i don't have the option of putting my antenna in a can, dish etc.
This is not a critical issue, i am obviously on line and getting along, but would still enjoy any suggestions for improving the performance on this airport card.
Thanx in advance, Anykey

Hi! That's a puzzler only due to there being no external port for adding an
antenna outside of the one built-in the iMac!
Another option may involve some purchase; as you may be able to extend
your own wireless network by using an Apple airport base station as a
bridge to (perhaps) see a greater increase in signal strength; it could act
as a repeater for both receiving and sending the IP signal. Then, you could
administer the base station by ethernet cable.
There are a few on-machine antenna options for some models of Apple
computer at QuickerTek online; they clip outside of PowerBooks, etc and
are said to not intrude or require wires into them in order to work externally.
I am not sure, but suspect the Quicker antennas may use USB power.
And that brings into the question the use of external USB wi-fi devices
and altering them into a directional antenna; most of these have the
wi-fi card and antenna built into the same little module. Then you may
have to make your own dish to focus the beam after all!
I hear a small dish network satellite dish could be used to capture or
send signals, but do not know if you'd need a powered device to use it.
That would have to be for "line-of-sight" use, of course.
Some links I'd posted somewhere in Discussions were to a few inventive
antenna and base DIY sites; I no longer have the urls saved...!
Best of luck in this matter!

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Disclaimer: Apple does not necessarily endorse any suggestions, solutions, or third-party software products that may be mentioned in the topic below. Apple encourages you to first seek a solution at Apple Support. The following links are provided as is, with no guarantee of the effectiveness or reliability of the information. Apple does not guarantee that these links will be maintained or functional at any given time. Use the information below at your own discretion.
This is a brief tutorial on how to improve YouTube video playback on an Apple iBook G3. As of now, I have only tested this method on my own iBook. iBook's with lower specs than the 900 MHz model may not receive the same performance upgrade from this brief tutorial. With that said, here is what you can do to attempt to make YouTube more functional on your iBook G3.
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{color:purple}killall Dock{color}
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{color:purple}sudo nano /etc/hostconfig{color}
This will bring up a configuration listing. Use the arrow keys to scroll down and change the value, SPOTLIGHT=-YES-, to SPOTLIGHT=-NO-.
From here, you should press Ctrl+X to exit, upon which it will ask if you want to save. Follow the on screen prompts to save, and exit out of the Terminal. Spotlight will still appear in the corner of your screen, but it won't search for anything. Now on to the next step.
2) For any video URL on YouTube, add &fmt=5 to the end of the URL, and this will force videos to run in quarter VGA mode (320x240). The video quality will be degraded, but you should maintain a stable frame rate that is uninterrupted and capable of streaming without the need to pause and wait for the entire video to load.
This method has worked for me for old and new videos alike. Unfortunately, I have not found a way to make iTunes/Quicktime force videos into a low resolution mode, so this fix will only resolve video playback involving YouTube.
*To restore functionality to Dashboard and Spotlight:*
1) How to Restore the Dashboard
Open the terminal and input the following command
{color:purple}defaults write com.apple.dashboard mcx-disabled -boolean NO {color}
After entering this command, you will have to restart the Dock. To do so, enter the following command into the terminal
{color:purple}killall Dock{color}
Now, can drag the Dashboard icon back to the Dock, or if you did not remove it to begin with, it should function once again.
2) How to restore Spotlight
Open the terminal and enter the following command
{color:purple}sudo nano /etc/hostconfig{color}
This will open up a config file. Scroll down (using the arrow keys) to the portion that says SPOTLIGHT=-NO- and change the value so that it says SPOTLIGHT=-YES-
Exit the config file by pressing Ctrl+X. Follow the onscreen prompts to save the config file, and you are allset.
Best of luck to you all. I hope that this tutorial has been helpful.
This is the 2nd version of this tip. It was submitted on May 19, 2010 by Macology, with thanks to Ronda Wilson.
Do you want to provide feedback on this User Contributed Tip or contribute your own? If you have achieved Level 2 status, visit the User Tips Library Contributions forum for more information.

Disclaimer: Apple does not necessarily endorse any suggestions, solutions, or third-party software products that may be mentioned in the topic below. Apple encourages you to first seek a solution at Apple Support. The following links are provided as is, with no guarantee of the effectiveness or reliability of the information. Apple does not guarantee that these links will be maintained or functional at any given time. Use the information below at your own discretion.
This is a brief tutorial on how to improve YouTube video playback on an Apple iBook G3. As of now, I have only tested this method on my own iBook. iBook's with lower specs than the 900 MHz model may not receive the same performance upgrade from this brief tutorial. With that said, here is what you can do to attempt to make YouTube more functional on your iBook G3.
1) If the iBook is running Mac OS X 10.4 (Tiger), disable Dashboard and Spotlight:
While widgets are fun and Spotlight is a useful quick search tool, they are known resource consumers that make video playback problematic for older Mac laptops, such as the iBook G3. To accomplish this, you will have to use the Terminal. Once the Terminal is open, enter the following command
{color:purple}defaults write com.apple.dashboard mcx-disabled -boolean YES{color}
After entering this command, you will then need to restart the Dock (Dashboard is owned by the Dock). To do so, again, using the Terminal, you will enter the following command.
{color:purple}killall Dock{color}
You may still see the Dashboard icon in the Dock, but clicking on it should do nothing.
For the next part, you will use the Terminal to disable Spotlight. Open the Terminal and enter the following command.
{color:purple}sudo nano /etc/hostconfig{color}
This will bring up a configuration listing. Use the arrow keys to scroll down and change the value, SPOTLIGHT=-YES-, to SPOTLIGHT=-NO-.
From here, you should press Ctrl+X to exit, upon which it will ask if you want to save. Follow the on screen prompts to save, and exit out of the Terminal. Spotlight will still appear in the corner of your screen, but it won't search for anything. Now on to the next step.
2) For any video URL on YouTube, add &fmt=5 to the end of the URL, and this will force videos to run in quarter VGA mode (320x240). The video quality will be degraded, but you should maintain a stable frame rate that is uninterrupted and capable of streaming without the need to pause and wait for the entire video to load.
This method has worked for me for old and new videos alike. Unfortunately, I have not found a way to make iTunes/Quicktime force videos into a low resolution mode, so this fix will only resolve video playback involving YouTube.
*To restore functionality to Dashboard and Spotlight:*
1) How to Restore the Dashboard
Open the terminal and input the following command
{color:purple}defaults write com.apple.dashboard mcx-disabled -boolean NO {color}
After entering this command, you will have to restart the Dock. To do so, enter the following command into the terminal
{color:purple}killall Dock{color}
Now, can drag the Dashboard icon back to the Dock, or if you did not remove it to begin with, it should function once again.
2) How to restore Spotlight
Open the terminal and enter the following command
{color:purple}sudo nano /etc/hostconfig{color}
This will open up a config file. Scroll down (using the arrow keys) to the portion that says SPOTLIGHT=-NO- and change the value so that it says SPOTLIGHT=-YES-
Exit the config file by pressing Ctrl+X. Follow the onscreen prompts to save the config file, and you are allset.
Best of luck to you all. I hope that this tutorial has been helpful.
This is the 2nd version of this tip. It was submitted on May 19, 2010 by Macology, with thanks to Ronda Wilson.
Do you want to provide feedback on this User Contributed Tip or contribute your own? If you have achieved Level 2 status, visit the User Tips Library Contributions forum for more information.

Tutorial: How To Improve Youtube Playback on iBook G3

Salutations,
this is a brief tutorial on how to improve Youtube video playback on an Apple iBook G3. As of now, I have only tested this method on my own iBook. iBook's with lower specs may not receive the same performance upgrade from this brief tutorial. With that said, here is what you can do to make Youtube functional on your iBook G3.
1) Disable Dashboard and Spotlight:
While widgets are fun and Spotlight is a useful quick search tool, they are known resource consumers that make video playback problematic for older Mac laptops, such as the iBook G3. To accomplish this, you will have to use the terminal. Once the terminal is open, enter the following command
defaults write com.apple.dashboard mcx-disabled -boolean YES
After entering this command, you will then need to restart the Dock (Dashbaord is owned by the Dock). To do so, again, using the terminal, you will enter the following command.
killall Dock
You may still see the Dashboard icon in the Dock, but clicking on it should do nothing.
For the next part, you will use the terminal to disable Spotlight. Open the terminal and enter the following command.
sudo nano /etc/hostconfig
This will bring up a configuration listing. Use the arrow keys to scroll down and change the value, SPOTLIGHT=-YES-, to SPOTLIGHT=-NO-.
From here, you should press Ctrl+X to exit, upon which it will ask if you want to save. Follow the on screen prompts to save, and exit out of the terminal. Spotlight will still appear in the corner of your screen, but it won't search for anything. Now on to the next step.
2) For any video URL on Youtube, add &fmt=5 to the end of the URL, and this will force videos to run in quarter VGA mode (320x240). The video quality will be degraded, but you should maintain a stable frame rate that is uninterrupted and capable of streaming without the need to pause and wait for the entire video to load.
This method has worked for me for old and new videos alike. Unfortunately, I have not found a way to make iTunes/Quicktime force videos into a low resolution mode, so this fix will only resolve video playback involving Youtube. Best of luck to you all. I hope that this tutorial has been helpful.

Others have suggested that you may want to tell users how to revert to the original settings.
I'm working on getting this posted as a User Tip. Would you like to add instructions on how to regain Dashboard and Spotlight functionality?

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How to improve the query speed. Any hints can u suggest in the query or any correction. Here i am using sample tables for checking purpose, When i am trying with my original values, this type of query taking longer time to run
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My brother works with massive Excel spreadsheets and needs to speed them up. Gigabytes in size and often with a million rows and many sheets within the workbook. He's already refined the sheets to take advantage of Excel's multi-thread recalculation and
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Hi,
>> The VB engine is single-threaded, and these relatively simple functions can be called millions of times.
The Office Object Model is
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>> How to improve spreadsheet speed when single-threaded VBA is the bottleneck.
The performance optimization should be based on the business. Since I’m not familiar with your business, so I can only give you some general suggestions from the technical perspective. According to your description, the size of the spreadsheet had reached
Gigabytes and data volume is about 1 million rows. If so, I will suggest you storing the data to SQL Server and then use the analysis tools (e.g. Power Pivot).
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and the Power Pivot add-in
As
ryguy72 suggested, you can also leverage some other third party data processing tool
according to your business requirement.
Regards,
Jeffrey
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