User talk:Dwonshin

Memory
Despite the misleading/absent info. in your emails, I have worked out that your previous id was Zikuiliu and that you created an empty article at Calphad. You say you had forgotten your original id and created this account. Please note that the Calphad article was deleted because db-empty applied and for no other reason. -- RHaworth 17:28, 11 October 2007 (UTC)

You then created user:Calphadwiki. Currently you are user:Dwonshin but I shall not be surprised if another id pops up. -- RHaworth 19:01, 17 October 2007 (UTC)

Process
Have you read the phase diagram article carefully from top to bottom? Is there anything you feel can be added? I recommend that before you create any new article such as calculation of phase diagrams you should propose its creation first at talk:phase diagram.

Journal
On the other hand, an article about the journal has been requested for some time - see List of missing journals/A-C. The title should be CALPHAD (with a redirect from calphad) and the article should start with something like:
 * CALPHAD, short for calculation of phase diagrams is a peer-reviewed academic journal published by &hellip;

The article should contain two or three references and links to independent sources that confirm the notability of the journal. It would also be a good idea if you were to address the following aspects: wikify, uncat and linkless. -- RHaworth 01:10, 12 October 2007 (UTC)

Insult
It is possible that all my advice in the CalPhaD section above was total nonsense. As far as I can tell this state is essentially the same as the article you emailed me. I feel insulted. You could at least say a few words explaining why you disagree with my advice. -- RHaworth 19:07, 17 October 2007 (UTC)

Sending the article to AfD may seem a bit heavy, but I just feel frustrated. Why will you not discuss this matter? -- RHaworth 19:26, 17 October 2007 (UTC)


 * This is Dongwon Shin, who is a post-doctoral researcher at Prof. Zi-Kui Liu at the Pennsylvania State University. Prof. Liu forward the email from you and wanted me to update the CALPHAD page. I am truly sorry if our being naive in creating an entry in the wikipedia caused any discomfortness. That was the last thing that we would intend. I think there was a miscommunication in this instance. I should have read your previous advice and ,of course, had to respond instead of creating the exact same page. I thought Prof. Zi-Kui Liu had a technical problem in creating the webpage. Now I read your previous advice and see what is going on.


 * I think adding the content of CALPHAD as the part the phase diagram will not be enough at all. Phase diagram is just one of the byproduct of CALPHAD and the importance of CALPHAD is increasing exponentially with the help from many other scientific improvement, such as first-principles calculations based on quantum mechanics calculations. -- Dwonshin 19:42, 17 October 2007 (UTC)

A response - I feel much happier. Please repeat the above in the AfD discussion and explain a bit more in the article itself, your strange claim that a "phase diagram is a byproduct of calphad". -- RHaworth 07:28, 18 October 2007 (UTC)


 * I would say the one of many abilities of the CALPHAD methodology is calculating a phase diagram. A phase diagram is a result shows that at given conditions, such as temperature, pressure, and composition, which phase(s) will minimize the Gibbs energy of the entire system. There are two different methods of obtaining a phase diagram. First method is conventional experimental measurements, and this method only can provide the phase stabilities of the system of interest only. For example, if you measure phase equilibrium data of A-B binary system, then that information is only valid in the same system, thus it cannot be transferred to B-C or A-C systems, or higher order systems like A-B-C ternary system. In this way, understanding the phase stability of complex multicomponent system is almost impossible since the degree of freedom increases exponentially as the number of elements increases. Second methods is 'calculating' a phase diagram from pre-evaluated Gibbs energies of individual phases in a system. Most CALPHAD softwares have a Gibbs energy minimizer and thus are able to calculate phase diagram. The advantage of the CALPHAD method can be found in its extrapolation scheme. If one combines thermodynamic descriptions of A-B, B-C, and A-C binary, which have the Gibbs energy functions of individual phases in those binaries, then very accurate prediction for A-B-C ternary can be made. To evaluate Gibbs energy functions of individual phases, one can use either phase diagram data and thermochemical data of those phases. The more data one can have, the better the quality of CALPHAD method will be. In a word, CALPHAD can make a pretty good prediction of complete unexplored region---multicomponent system--- from the extrapolation of already known lower order system. --Dwonshin 22:14, 18 October 2007 (UTC)

Image copyright problem with Image:FeCrNiMnSiC.jpg
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Duplicate images uploaded
Thanks for uploading Image:CALPHADex.jpg. A machine-controlled robot account noticed that you also uploaded the same image under the name Image:FeCrNiMnSiC.jpg. The copy called Image:FeCrNiMnSiC.jpg has been marked for speedy deletion since it is redundant. If this sounds okay to you, there is no need for you to take any action.

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Image source problem with Image:CALPHADex.jpg
Thanks for uploading Image:CALPHADex.jpg. I noticed that the file's description page currently doesn't specify who created the content, so the copyright status is unclear. If you did not create this file yourself, you will need to specify the owner of the copyright. If you obtained it from a website, then a link to the website from which it was taken, together with a restatement of that website's terms of use of its content, is usually sufficient information. However, if the copyright holder is different from the website's publisher, their copyright should also be acknowledged.

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