A member cannot delete his/her article published/saved in ISC. But, there is an indirect way. When I joined ISC, I created multiple copies of my first article unknowingly. Then, I did this to replace those duplicates with new articles. When you want to post a new article, clear the title, summary and description of the article you want to delete after clicking 'Edit'. Then, write title, summary, description of your new article there and publish this article. Now, the content of your unwanted article will be replaced with the content of your new article but the URL won't change. So, write a message to the editor (in the text area displayed when you click 'Show/Hide Advanced Options' present below the three buttons at the bottom of article posting page) to change the URL accordingly. You can follow this way or the way suggested above by lead editor.
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