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ForumsWelcomeRules and GuidelinesUser Actions and Communications
1. USER ACTIONS AND COMMUNICATIONS (541 views)
By: odesieadmin
The Company does not control the content of communications or postings using the Collaboration Tools and does not verify, endorse, support, or guarantee the truthfulness, accuracy or reliability of any such communication using the Collaboration Tools. You acknowledge that any reliance on such material through use of the Collaboration Tools will be at your own risk. Moreover, you understand that by using odesie®, it is possible that you may be exposed to content that is offensive, indecent or objectionable. The Company will investigate and take appropriate action upon notice through odesie® Support or an in-world odesie® Guide, as appropriate. However, under no circumstances will the Company be liable in any way for the content of any posting or communication, including but not limited to, any errors or omissions in its content, or any loss or damage of any kind incurred as a result of the use of any content posted or communicated using Collaboration Tools.
January 2, 2014 at 4:04pm
ForumsWelcomeRules and GuidelinesStandards of Conduct
2. STANDARDS OF CONDUCT (513 views)
By: odesieadmin
You agree that you are responsible for your own communications with respect to any use of the Collaboration Tools and for any consequences thereof, and you agree to use these tools only to post, send, and receive messages and material that are proper and related to the particular learning environment. By way of example, and not as a limitation, you agree that when using a Collaborative Tool you will do so in a professional manner and you will not:

Defame, abuse, harass, stalk, threaten or otherwise violate the legal rights of others;

Publish, post, gesture in-world, upload, distribute, or transmit any topic, material, information or other content that is unlawful, harmful, threatening, abusive, harassing, defamatory, libelous, inappropriate in a professional setting, profane, obscene, indecent, objectionable or discriminatory based on race, religion, ethnicity, gender, age, or veteran status;

Post material containing software or other material protected by intellectual property laws unless you own or control the rights thereto or have received all necessary consents;

Post files that contain viruses, malware, corrupted files or any other similar software or programs that may damage the operation of another user's computer or network;
Advertise, offer to sell or buy any goods or services for any business purpose;

Conduct or forward surveys, chain letters or any form of solicitation;

Download any file posted by another user that you know, or reasonably should know, cannot be legally distributed in such manner;
Impersonate, or falsely state or otherwise misrepresent your affiliation with any other person or organization;

Falsify or delete any author attribution, legal or other proper notice or proprietary designation or the label of the origin of material;

Interfere with other users from using odesie®;

List or collect information about other users, including e-mail addresses, without their consent;

or

Violate any applicable laws, regulations, or user company policies, including the communication of proprietary materials of your employer to third parties.
January 2, 2014 at 3:55pm
ForumsMaintenance SolutionsMechanicalCavitation in a Centrifugal Pump
3. CAVITATION IN A CENTRIFUGAL PUMP (4 views)
By: sethkohler
Cavitation is NOT air in the pump. It is vapor in the pump. So where is the vapor coming from?

This all "boils" down to something relatively simple, the vapor is coming from a phase change (meaning liquid is flashing to a gas)of the liquid being pumped. This phase change is a result of the decrease in pressure below saturation pressure at the suction of the pump, then as the pressure increases back above saturation pressure at the impeller vanes, the vapor bubbles collapse.

Cavitation can quickly destroy pumps due to the energy release as the vapor bubbles collapse. So what are the main causes of it? Are there preventive measures to keep it from happening? How do I know if the pump which has cavitated is damaged to severely to use?
December 2, 2016 at 12:09pm
ForumsLearning ActivitesOculus RiftWeb Browser
4. WEB BROWSER (23 views)
By: eddieng
Web browsers are being developed for VR. I'm not sure I understand the appeal, but this could be popular.

https://www.engadget.com/2016/10/06/oculus-vr-web-browser-carmel/
October 6, 2016 at 2:55pm
ForumsLearning ActivitesOculus RiftFor the Classroom
5. FOR THE CLASSROOM (32 views)
By: eddieng
There are several VR applications that brings class lessons to life. This one explores the insides of a plant cell.

http://phys.org/news/2016-09-vr-explore-world-cell.html
September 19, 2016 at 3:23pm
ForumsLearning ActivitesOculus RiftSpectators
6. SPECTATORS (45 views)
By: eddieng
The developer of Wands are trying to make the VR experience more social by providing a more robust spectator view of the action.

http://www.digitaltrends.com/virtual-reality/wands-gear-vr-game-news/
August 19, 2016 at 3:04pm
ForumsLearning ActivitesWhat's New?WebGL
7. WEBGL (44 views)
By: eddieng
Unity 5 has introduced the WebGL platform option. Most of the projects have been updated. Some are still being polished. Check them out.
August 3, 2016 at 9:40am
ForumsCoursesCombined CyclePurpose of Intercept Valve
8. PURPOSE OF INTERCEPT VALVE (47 views)
By: mikecoats
The term Intercept Valve sounds pretty cool....possibly bringing to mind a scene from "Top Gun". However, the purpose of the intercept valve has nothing to do with fighter aircraft.

The intercept valve facilities quick shutdown of a steam turbine on a turbine trip. During a trip, the main stop and control valves immediately go shut. This prevents HP steam from being admitted to the turbine. However, there is still a lot of steam left downstream of the HP turbine in piping as well as the IP and LP sections of the HRSG. The intercept is located downstream of the IP section of the HRSG and upstream of the IP section of the turbine. On a turbine trip, the intercept valve closes, preventing steam already in the system from entering the IP section of the turbine. If this valve were not there, steam would continue to enter the IP section of the turbine, and the rotor would continue to rotate until this steam has been exhausted.
August 3, 2016 at 9:32am
ForumsCoursesSafety120 Volts Kills
9. 120 VOLTS KILLS (46 views)
By: mikecoats
With all the high voltage around an industrial electrician, it is easy to forget about the normal, everyday 120 volt AC power. DON'T!! Contact with 120 VAC kills more people every year than any of the other voltage levels. It only takes ,1 to ,2 amps to kill a person, and 120 VAC can easily generate this amperage thru the normal resistance of a person. People often overlook 120 VAC because it is all around us. Respect it.
August 2, 2016 at 1:10pm
ForumsCoursesElectricalBlack is hot!
10. BLACK IS HOT! (47 views)
By: mikecoats
Don't be confused when wiring 120 VAC. Normally there are 3 wires, and they are usually colored Black, White and Green.

Black= Hot
White= Neutral
Green= Ground
August 2, 2016 at 1:05pm
ForumsCoursesFoundationIdeal Gas Law and Tom Brady
11. IDEAL GAS LAW AND TOM BRADY (66 views)
By: mikecoats
The ideal gas law is PV=NRT, where P is Absolute pressure, V is volume,T is absolute temperature, N is the number of moles of gas, and R is the universal gas constant. When solving a problem using this law, it is very important to use absolute pressure and temperature.

For example, if a ball is inflated to 12 PISG at a temperature of 72 degrees F, and then taken into an environment where the temperature is 40 degrees F, the expected pressure at 40 degrees F can be calculated using the ideal gas law.

Can anyone come up with an answer? Post here. I will supply the correct answer on August 15. Good luck.

To start you off we can assume that volume is constant, and the number of moles of gas is constant (we are not adding or removing gas).
August 2, 2016 at 1:01pm
ForumsCoursesIndustrial Electricity and ElectronicsPower Supplies
12. POWER SUPPLIES (53 views)
By: mikecoats
24 VDC linear power supplies normally use a full wave bridge rectifier. When measuring the output, if the reading is in the 14 to 17 volt range, this is a good indication that one leg of the bridge has opened.
August 2, 2016 at 12:50pm
ForumsMaintenance SolutionsElectricalTriacs
13. TRIACS (50 views)
By: mikecoats
Remember that Triacs normally have small amount of leakage current. This is normal but must be accounted. When measuring the output of a device using an triac with a high impedance meter such as a fluke, a "phantom" voltage may be detected. This is due the leakage current being detected by the meter, resulting in a voltage reading. It is best to use a low impedance device (analog meter, wiggins, etc) to measure voltage output of a triac operated device.
August 2, 2016 at 12:47pm
ForumsCoursesInstrumentation and ControlsRule of thumb when calibrating a "dumb" transmitter
14. RULE OF THUMB WHEN CALIBRATING A "DUMB" TRANSMITTER (95 views)
By: mikecoats
The old analog transmitters (called "dumb" transmitters) use voltage divider networks in the span and zero adjustments. A good rule of thumb for these transmitters (IE: Rosemount 1151) is to set the zero at process variable lower range value, set the zero to 4 mA then apply process variable for the upper range value. Instead of setting the output to 20 mA, note the reading on the ammeter when the upper range value is applied. Take a quarter of the difference between 20 mA and this reading. Now set the final value to 20mA, +/- this value. For example if the output reading when upper range value is applied is 18 mA. The difference between 20 mA and 18 mA is 2 mA. 1/4 of this value is .5 mA. Set the span adjust to 20.5 mA (instead of 20mA). Check the zero. It will have moved above 4mA. Reduce reading to 4mA. Check the span. It should be reading 20mA, of very close to it. This works because any span adjustment affects and zero adjustment and vice versa. By adjusting the span a little bit high as calculated, when the zero has to lowered, it brings the span right in line.
August 2, 2016 at 11:03am
ForumsITGeneralSymantic Security Issue
15. SYMANTIC SECURITY ISSUE (58 views)
By: eddieng
Just letting people know that a major security flaw has been discovered in the Symantic security program.

http://www.pcmag.com/news/345729/experts-symantec-security-flaw-is-as-bad-as-it-gets
June 29, 2016 at 3:03pm
ForumsLearning ActivitesOculus RiftValve
16. VALVE (58 views)
By: eddieng
Valve is releasing software in hopes to let everyone develop their own VR experiences.

https://www.engadget.com/2016/06/09/valve-destinations-workshop-vr-toolkit/
June 10, 2016 at 3:17pm
ForumsCoursesMechanicalWalk Before You Run
17. WALK BEFORE YOU RUN (72 views)
By: tonyfoskey
Too many management personnel are forgetting the basics. I've been dealing with hundreds of new mechanics across the U.S. and they are being thrown to the wolves. Let's get these new hires learning the basics and how to be safe. Giving a new mechanic and a toolbox then crossing your fingers hoping they won't get hurt or break critical equipment is not a business plan.
May 26, 2016 at 9:41am
ForumsITGeneralNetflix's Internet Speed Test
18. NETFLIX'S INTERNET SPEED TEST (77 views)
By: eddieng
Netflix set up a site to allow users to quickly and easily determine what their download speed is.

http://techcrunch.com/2016/05/18/netflix-launches-its-own-speed-test-website-fast-com/
May 18, 2016 at 2:57pm
ForumsITSoftwareiOS Apps
19. IOS APPS (183 views)
By: eddieng
Be a little wary when downloading apps on the market. Some developers have been using an unofficial version of xCode that is adding AdWare to the apps.

http://www.pcworld.com/article/2985449/ios/thousands-of-ios-apps-infected-by-xcodeghost.html
September 23, 2015 at 3:26pm
ForumsITGeneralChrome Bug
20. CHROME BUG (178 views)
By: eddieng
While not a security issue, this could still cause problems.

http://www.fiercecio.com/story/old-bug-causes-chrome-browser-trip-over-malformed-url/2015-09-21
September 21, 2015 at 3:13pm
ForumsITGeneralAndroid Security Issue
21. ANDROID SECURITY ISSUE (170 views)
By: eddieng
If you are operating on Android 5.0 to 5.1.1, you might need to check for a patch. There is a relatively simple way to bypass the password lockscreen.

http://www.toptechnews.com/article/index.php?story_id=98954
September 17, 2015 at 3:10pm
ForumsITHardwareNew Vision for Computers
22. NEW VISION FOR COMPUTERS (172 views)
By: eddieng
Computers can be customized for the most part. Acer is aiming to make it easier for the masses. The idea is that each component is sold separately and easily stacks on the components you already have.

http://www.bbc.com/news/technology-34130098
September 2, 2015 at 3:16pm
ForumsLearning ActivitesOculus Rift4D Audio
23. 4D AUDIO (259 views)
By: eddieng
Here's something being developed that will certainly improve the immersion of the Oculus Rift.

http://www.gizmag.com/ceekars-4d-headphones/36566/
April 14, 2015 at 3:28pm
ForumsAdministrativeForum Suggestions and CommentsLoading slowly
24. LOADING SLOWLY (342 views)
By: eddieng
My computer seems to be loading pages of this forum rather slowly today. I am wondering if anyone else is experiencing this.
August 21, 2014 at 4:10pm
ForumsLearning ActivitesOculus RiftSixense
25. SIXENSE (455 views)
By: adrianswift
http://www.sixensestore.com/stemsystem-2.aspx

Check these out!
They look kinda cool. Would make for an interesting way to control the rift experience.

Iv been wondering if perhaps a presentation mouse could be adapted to do something similar (before i saw these).
But I dont think there are too many presentation mice that are as spatially aware as these.
March 21, 2014 at 9:06am
ForumsITSoftwareSQL statement to exclude email addresses from query results
26. SQL STATEMENT TO EXCLUDE EMAIL ADDRESSES FROM QUERY RESULTS (429 views)
By: jdorman
I had to run a query and exclude all internal emails today. I forgot the exact syntax which turned out to be:

NOT LIKE '%domain.com'
March 13, 2014 at 1:43pm