<?xml version='1.0' encoding='UTF-8'?><feed xmlns='http://www.w3.org/2005/Atom' xmlns:openSearch='http://a9.com/-/spec/opensearchrss/1.0/'><id>tag:blogger.com,1999:blog-6083273923677513673</id><updated>2007-12-07T02:37:31.775-05:00</updated><title type='text'>MA366 Ordinary Differential Equations</title><link rel='alternate' type='text/html' href='http://www.math.purdue.edu/~arshak/F07/MA366/blogger.html'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default'/><link rel='http://schemas.google.com/g/2005#feed' type='application/atom+xml' href='http://www.math.purdue.edu/~arshak/F07/MA366/atom.xml'/><author><name>arshak</name></author><generator version='7.00' uri='http://www.blogger.com'>Blogger</generator><openSearch:totalResults>7</openSearch:totalResults><openSearch:startIndex>1</openSearch:startIndex><openSearch:itemsPerPage>25</openSearch:itemsPerPage><entry><id>tag:blogger.com,1999:blog-6083273923677513673.post-2522995729226783582</id><published>2007-12-07T02:18:00.000-05:00</published><updated>2007-12-07T02:37:31.798-05:00</updated><title type='text'>Final Exam</title><content type='html'>&lt;a href="http://www.courses.purdue.edu/cgi-bin/relay.exe/query?qid=finalExamDetails&amp;amp;abbreviation=MA&amp;amp;academicInitiative=puWestLafayetteTrdtn&amp;amp;session=2007Fal&amp;amp;courseNumber=366"&gt;Scheduled&lt;/a&gt; Tue, Dec 11, 2007 1:00-3:00pm, in REC 313&lt;br /&gt;&lt;br /&gt;&lt;font color="red"&gt;New!&lt;/font&gt; [&lt;a href="feprac.pdf"&gt;Practice Problems&lt;/a&gt;][&lt;a href="fepracsol.pdf"&gt;Solutions&lt;/a&gt;]</content><link rel='alternate' type='text/html' href='http://www.math.purdue.edu/~arshak/F07/MA366/blogger.html#2522995729226783582' title='Final Exam'/><link rel='replies' type='application/atom+xml' href='http://www.math.purdue.edu/~arshak/F07/MA366/atom.xml' title='Post Comments'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/2522995729226783582'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/2522995729226783582'/><author><name>arshak</name></author></entry><entry><id>tag:blogger.com,1999:blog-6083273923677513673.post-1773778366967959848</id><published>2007-12-02T03:18:00.000-05:00</published><updated>2007-12-03T03:18:55.670-05:00</updated><title type='text'>Homework</title><content type='html'>&lt;b&gt;#12&lt;/b&gt; &lt;i&gt;Due on Fri, Dec 7&lt;/i&gt;: &lt;b&gt;&amp;sect;7.8&lt;/b&gt;: 2, 10, 19, &lt;b&gt;&amp;sect;7.9&lt;/b&gt;: 5, 11&lt;br /&gt;&lt;br /&gt;&lt;b&gt;#11&lt;/b&gt; &lt;i&gt;Due on Fri, Nov 30&lt;/i&gt;: &lt;b&gt;&amp;sect;7.4&lt;/b&gt;: 2(a,b), &lt;b&gt;&amp;sect;7.5&lt;/b&gt;:  3, 12, 15, &lt;b&gt;&amp;sect;7.6&lt;/b&gt;: 5, 9,  &lt;b&gt;&amp;sect;7.7&lt;/b&gt;: 6, 12, 15(a)&lt;br /&gt;- Technology examples &lt;a href="ch07/C7S5dir/Ch07Sec05.htm"&gt;Ch07Sec05&lt;/a&gt;, &lt;a href="ch07/C7S6dir/Ch07Sec06.htm"&gt;Ch07Sec06&lt;/a&gt;&lt;br /&gt;&lt;br /&gt;&lt;b&gt;#10&lt;/b&gt; &lt;i&gt;Due on Fri, Nov 9&lt;/i&gt;: &lt;b&gt;&amp;sect;6.5&lt;/b&gt;: 3, 12 &lt;b&gt;&amp;sect;6.6&lt;/b&gt;:  4, 9, 17, 23(a) &lt;b&gt;&amp;sect;7.1&lt;/b&gt;: 5, 9, 18 &lt;br /&gt;&lt;br /&gt;&lt;b&gt;#9&lt;/b&gt; &lt;i&gt;Due on Wed, Oct 31&lt;/i&gt;: &lt;b&gt;&amp;sect;6.2&lt;/b&gt;: 8, 16, 22, &lt;b&gt;&amp;sect;6.3&lt;/b&gt;:  17, 19(a), 25, &lt;b&gt;&amp;sect;6.4&lt;/b&gt;: 2, 10, 12&lt;br /&gt;&lt;br /&gt;&lt;b&gt;#8&lt;/b&gt; &lt;i&gt;Due on Wed, Oct 24&lt;/i&gt;: &lt;b&gt;&amp;sect;4.2&lt;/b&gt;: 21, 34, &lt;b&gt;&amp;sect;4.3&lt;/b&gt;:  3, 11,  &lt;b&gt;&amp;sect;4.4&lt;/b&gt;: 7, 13, &lt;b&gt;&amp;sect;6.1&lt;/b&gt;: 5, 13&lt;br /&gt;&lt;br /&gt;&lt;b&gt;#7&lt;/b&gt; &lt;i&gt;Due on Wed, Oct 17&lt;/i&gt;: &lt;b&gt;&amp;sect;3.8&lt;/b&gt;: 11, 13, 18, &lt;b&gt;&amp;sect;3.9&lt;/b&gt;:  9, 13, 17, &lt;b&gt;&amp;sect;4.1&lt;/b&gt;: 16, 17, 24&lt;br /&gt;- Technology examples &lt;a href="ch03/C3S8dir/Ch03Sec08.htm"&gt;Ch03Sec08&lt;/a&gt;, &lt;a href="ch03/C3S9dir/Ch03Sec09.htm"&gt;Ch03Sec09&lt;/a&gt;&lt;br /&gt;&lt;br /&gt;&lt;b&gt;#6&lt;/b&gt; &lt;i&gt;Due on Wed, Oct 10&lt;/i&gt;: &lt;b&gt;&amp;sect;3.5&lt;/b&gt;: 11, 17, 24, &lt;b&gt;&amp;sect;3.6&lt;/b&gt;:  7,  10, 18, &lt;b&gt;&amp;sect;3.7&lt;/b&gt;:  2, 10, 18&lt;br /&gt;- Technology example &lt;a href="ch03/C3S5dir/Ch03Sec05.htm"&gt;Ch03Sec05&lt;/a&gt;&lt;br /&gt;&lt;br /&gt;&lt;b&gt;#5&lt;/b&gt; &lt;i&gt;Due on Wed, Sep 26&lt;/i&gt;: &lt;b&gt;&amp;sect;3.2&lt;/b&gt;: 5, 11, 22, 26, &lt;b&gt;&amp;sect;3.3&lt;/b&gt;: 9, 18, 21,  &lt;b&gt;&amp;sect;3.4&lt;/b&gt;: 11, 19, 24&lt;br /&gt;- Technology example &lt;a href="ch03/C3S4dir/Ch03Sec04.htm"&gt;Ch03Sec04&lt;/a&gt;&lt;br /&gt;&lt;br /&gt;&lt;b&gt;#4&lt;/b&gt; &lt;i&gt;Due on Wed, Sep 19&lt;/i&gt;: &lt;b&gt;&amp;sect;2.7&lt;/b&gt;: 3, 9, 16, &lt;b&gt;&amp;sect;2.8&lt;/b&gt;: 6, 7,  &lt;b&gt;&amp;sect;3.1&lt;/b&gt;: 8, 13, 17, 22&lt;br /&gt;&lt;br /&gt;- For &amp;sect;2.7 use MATLAB package &lt;a href="lab/eul.pdf"&gt;eul&lt;/a&gt; or follow this example: &lt;a href="ch02/C2S7dir/Ch02Sec07.htm"&gt;Ch02Sec07&lt;/a&gt;&lt;br /&gt;- For &amp;sect;2.8 you may follow this example: &lt;a href="ch02/C2S8dir/Ch02Sec08.htm"&gt;Ch02Sec08&lt;/a&gt;&lt;br /&gt;&lt;br /&gt;The examples above are from Wiley's &lt;a href="http://bcs.wiley.com/he-bcs/Books?action=index&amp;amp;itemId=0471433381&amp;amp;bcsId=2021"&gt;Student Companion Website&lt;/a&gt;&lt;br /&gt;&lt;br /&gt;&lt;b&gt;#3&lt;/b&gt; &lt;i&gt;Due on Wed, Sep 12&lt;/i&gt;: &lt;b&gt;&amp;sect;2.4&lt;/b&gt;: 10, 22(a-c), &lt;b&gt;&amp;sect;2.5&lt;/b&gt;:  3, 16(a-b), 17(a), &lt;b&gt;&amp;sect;2.6&lt;/b&gt;: 4, 8, 14, 22&lt;br /&gt;&lt;b&gt;#2&lt;/b&gt; &lt;i&gt;Due on Wed, Sep 5&lt;/i&gt;: &lt;b&gt;&amp;sect;2.1&lt;/b&gt;: 14, 20, 22, 31, &lt;b&gt;&amp;sect;2.2&lt;/b&gt;:  2, 22, 24, &lt;b&gt;&amp;sect;2.3&lt;/b&gt;: 10, 14, 24&lt;br /&gt;&lt;b&gt;#1&lt;/b&gt; &lt;i&gt;Due on Wed, Aug 29&lt;/i&gt;: &lt;b&gt;&amp;sect;1.1&lt;/b&gt;: 1, 11, 16, 21, &lt;b&gt;&amp;sect;1.2&lt;/b&gt;: 7, 9, 12, 18(a,b), &lt;b&gt;&amp;sect;1.3&lt;/b&gt;: 2, 8, 19&lt;br /&gt;&lt;br /&gt;&lt;i&gt;Note:&lt;/i&gt; Only selected problems will be graded (due to limitations on TA's workload)</content><link rel='alternate' type='text/html' href='http://www.math.purdue.edu/~arshak/F07/MA366/blogger.html#1773778366967959848' title='Homework'/><link rel='replies' type='application/atom+xml' href='http://www.math.purdue.edu/~arshak/F07/MA366/atom.xml' title='Post Comments'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/1773778366967959848'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/1773778366967959848'/><author><name>arshak</name></author></entry><entry><id>tag:blogger.com,1999:blog-6083273923677513673.post-4161623733835912001</id><published>2007-11-25T23:24:00.000-05:00</published><updated>2007-11-26T00:29:00.232-05:00</updated><title type='text'>Course Log</title><content type='html'>&lt;b&gt;Covered&lt;/b&gt; (sections from [&lt;a href="#BDP"&gt;BDP&lt;/a&gt;])&lt;br /&gt;&lt;i&gt;Fri, Nov 16&lt;/i&gt;: Exam 2 Discussion&lt;br /&gt;&lt;i&gt;Wed, Nov 14&lt;/i&gt;: &amp;sect; 7.7&lt;br /&gt;&lt;i&gt;Mon, Nov 12&lt;/i&gt;: Midterm Exam 2 Review&lt;br /&gt;&lt;i&gt;Fri, Nov 9&lt;/i&gt;: &amp;sect; 7.6&lt;br /&gt;&lt;i&gt;Wed, Nov 7&lt;/i&gt;: &amp;sect; 7.5&lt;br /&gt;&lt;i&gt;Mon, Nov 5&lt;/i&gt;: &amp;sect; 7.1, 7.4 &lt;br /&gt;&lt;i&gt;Fri, Nov 2&lt;/i&gt;: Read &amp;sect; 7.2&lt;br /&gt;&lt;i&gt;Wed, Oct 31&lt;/i&gt;: &amp;sect; 6.6&lt;br /&gt;&lt;i&gt;Mon, Oct 29&lt;/i&gt;: &amp;sect; 6.5&lt;br /&gt;&lt;i&gt;Fri, Oct 26&lt;/i&gt;: &amp;sect; 6.4&lt;br /&gt;&lt;i&gt;Wed, Oct 24&lt;/i&gt;: &amp;sect; 6.3&lt;br /&gt;&lt;i&gt;Mon, Oct 22&lt;/i&gt;: &amp;sect; 6.2&lt;br /&gt;&lt;i&gt;Fri, Oct 19&lt;/i&gt;: &amp;sect; 6.1&lt;br /&gt;&lt;i&gt;Wed, Oct 17&lt;/i&gt;: &amp;sect; 4.3, 4.4&lt;br /&gt;&lt;i&gt;Mon, Oct 15&lt;/i&gt;: &amp;sect; 4.2&lt;br /&gt;&lt;i&gt;Fri, Oct 12&lt;/i&gt;: &amp;sect;4.1&lt;br /&gt;&lt;i&gt;Wed, Oct 10&lt;/i&gt;: &amp;sect;3.9&lt;br /&gt;&lt;i&gt;Mon, Oct 8&lt;/i&gt;: October Break&lt;br /&gt;&lt;i&gt;Fri, Oct 5&lt;/i&gt;: Cancelled&lt;br /&gt;&lt;i&gt;Wed, Oct 3&lt;/i&gt;: Midterm Exam 1 Review&lt;br /&gt;&lt;i&gt;Mon, Oct 1&lt;/i&gt;: &amp;sect;3.8&lt;br /&gt;&lt;i&gt;Fri, Sep 28&lt;/i&gt;: &amp;sect;3.7&lt;br /&gt;&lt;i&gt;Wed, Sep 26&lt;/i&gt;: &amp;sect;3.6&lt;br /&gt;&lt;i&gt;Mon, Sep 24&lt;/i&gt;: &amp;sect;3.5&lt;br /&gt;&lt;i&gt;Fri, Sep 21&lt;/i&gt;: &amp;sect;3.4&lt;br /&gt;&lt;i&gt;Wed, Sep 19&lt;/i&gt;: &amp;sect;3.3&lt;br /&gt;&lt;i&gt;Mon, Sep 17&lt;/i&gt;: &amp;sect;3.2&lt;br /&gt;&lt;i&gt;Fri, Sep 14&lt;/i&gt;: &amp;sect;3.1&lt;br /&gt;&lt;i&gt;Wed, Sep 12&lt;/i&gt;: &amp;sect;2.8&lt;br /&gt;&lt;i&gt;Mon, Sep 10&lt;/i&gt;: &amp;sect;2.7&lt;br /&gt;&lt;i&gt;Fri, Sep 7&lt;/i&gt;: &amp;sect;2.6&lt;br /&gt;&lt;i&gt;Wed, Sep 5&lt;/i&gt;: &amp;sect;2.5&lt;br /&gt;&lt;i&gt;Fri, Aug 31&lt;/i&gt;: &amp;sect;2.3, &amp;sect;2.4&lt;br /&gt;&lt;i&gt;Wed, Aug 29&lt;/i&gt;: &amp;sect;2.2&lt;br /&gt;&lt;i&gt;Mon, Aug 27&lt;/i&gt;: &amp;sect;2.1&lt;br /&gt;&lt;i&gt;Fri, Aug 24&lt;/i&gt;: &amp;sect;1.3, started &amp;sect;2.1&lt;br /&gt;&lt;i&gt;Wed, Aug 22&lt;/i&gt;: &amp;sect;1.2&lt;br /&gt;&lt;i&gt;Mon, Aug 20&lt;/i&gt;: &amp;sect;1.1&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Planned&lt;/b&gt;&lt;br /&gt;&lt;i&gt;Mon, Nov 26&lt;/i&gt;: &amp;sect;7.8</content><link rel='alternate' type='text/html' href='http://www.math.purdue.edu/~arshak/F07/MA366/blogger.html#4161623733835912001' title='Course Log'/><link rel='replies' type='application/atom+xml' href='http://www.math.purdue.edu/~arshak/F07/MA366/atom.xml' title='Post Comments'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/4161623733835912001'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/4161623733835912001'/><author><name>arshak</name></author></entry><entry><id>tag:blogger.com,1999:blog-6083273923677513673.post-4670143959309772319</id><published>2007-11-12T22:40:00.000-05:00</published><updated>2007-11-26T00:30:06.004-05:00</updated><title type='text'>Midterm Exam 2</title><content type='html'>&lt;a href="http://www.courses.purdue.edu/cgi-bin/relay.exe/query?qid=eveningExamDetails&amp;amp;numPerPage=20&amp;amp;page=1&amp;amp;showPrevious=F&amp;amp;showCurrent=T&amp;amp;showFuture=T&amp;amp;usePaging=F&amp;amp;adminCampusLocation=westLafayette&amp;amp;academicProgramDesignation=traditional&amp;amp;abbreviation=MA&amp;amp;academicInitiative=puWestLafayetteTrdtn&amp;amp;session=2007Fal&amp;amp;courseNumber=366"&gt;Scheduled&lt;/a&gt; Tue, Nov 13, 7:00-8:15pm in ME 261&lt;br /&gt;&lt;br /&gt;It will be a 75 min exam, covering the material learned after Midterm Exam 1 up to  Wed, Nov 7 (inclusively).&lt;br /&gt;&lt;br /&gt;[&lt;a href="me2prac.pdf"&gt;Practice Problems&lt;/a&gt;]  [&lt;a href="me2pracsol.pdf"&gt;Partial Solutions&lt;/a&gt;]</content><link rel='alternate' type='text/html' href='http://www.math.purdue.edu/~arshak/F07/MA366/blogger.html#4670143959309772319' title='Midterm Exam 2'/><link rel='replies' type='application/atom+xml' href='http://www.math.purdue.edu/~arshak/F07/MA366/atom.xml' title='Post Comments'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/4670143959309772319'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/4670143959309772319'/><author><name>arshak</name></author></entry><entry><id>tag:blogger.com,1999:blog-6083273923677513673.post-6639386368053054045</id><published>2007-10-13T12:54:00.000-04:00</published><updated>2007-11-26T00:29:35.008-05:00</updated><title type='text'>Midterm Exam 1</title><content type='html'>&lt;a href="http://www.courses.purdue.edu/cgi-bin/relay.exe/query?qid=eveningExamDetails&amp;amp;numPerPage=20&amp;amp;page=1&amp;amp;showPrevious=F&amp;amp;showCurrent=T&amp;amp;showFuture=T&amp;amp;usePaging=F&amp;amp;adminCampusLocation=westLafayette&amp;amp;academicProgramDesignation=traditional&amp;amp;abbreviation=MA&amp;amp;academicInitiative=puWestLafayetteTrdtn&amp;amp;session=2007Fal&amp;amp;courseNumber=366"&gt;Scheduled&lt;/a&gt; Thur, Oct 4, 7:00-8:15pm in LWSN B155&lt;br /&gt;&lt;br /&gt;It will be a 75 min exam, covering the material learned up to  Fri, Sep 28 (inclusively).&lt;br /&gt;&lt;br /&gt; [&lt;a href="me1prac.pdf"&gt;Practice problems&lt;/a&gt;]  [&lt;a href="me1pracsol.pdf"&gt;Solutions&lt;/a&gt;]&lt;br /&gt;&lt;br /&gt;[&lt;a href="me1sol.pdf"&gt;Exam solutions&lt;/a&gt;]</content><link rel='alternate' type='text/html' href='http://www.math.purdue.edu/~arshak/F07/MA366/blogger.html#6639386368053054045' title='Midterm Exam 1'/><link rel='replies' type='application/atom+xml' href='http://www.math.purdue.edu/~arshak/F07/MA366/atom.xml' title='Post Comments'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/6639386368053054045'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/6639386368053054045'/><author><name>arshak</name></author></entry><entry><id>tag:blogger.com,1999:blog-6083273923677513673.post-3044446255798599673</id><published>2007-08-20T16:54:00.001-04:00</published><updated>2007-08-28T00:24:01.778-04:00</updated><title type='text'>Computer projects</title><content type='html'>The information about labs is available only through your TA.</content><link rel='alternate' type='text/html' href='http://www.math.purdue.edu/~arshak/F07/MA366/blogger.html#3044446255798599673' title='Computer projects'/><link rel='replies' type='application/atom+xml' href='http://www.math.purdue.edu/~arshak/F07/MA366/atom.xml' title='Post Comments'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/3044446255798599673'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/3044446255798599673'/><author><name>arshak</name></author></entry><entry><id>tag:blogger.com,1999:blog-6083273923677513673.post-2998749057961772068</id><published>2007-08-19T15:59:00.001-04:00</published><updated>2007-08-24T13:24:25.003-04:00</updated><title type='text'>Course Information</title><content type='html'>&lt;b&gt;Instructor:&lt;/b&gt; &lt;a href="http://www.math.purdue.edu/people/faculty/#P"&gt;Arshak Petrosyan&lt;/a&gt;&lt;br /&gt;&lt;i&gt;Office Hours:&lt;/i&gt; MWF 10:30 -11:30am, or by appointment, in MATH 610&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Time and Place:&lt;/b&gt; MWF 3:30pm-4:20pm in REC 114&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Computer Labs:&lt;/b&gt; On Tuesdays in SC 283. Time varies by divisions. Complete schedule is &lt;a href="http://www.courses.purdue.edu/cgi-bin/relay.exe/query?qid=courseOfferingDetails&amp;amp;abbreviation=MA&amp;amp;academicInitiative=puWestLafayetteTrdtn&amp;amp;session=2007Fal&amp;amp;courseNumber=366"&gt;here&lt;/a&gt;.&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Description:&lt;/b&gt; An introduction to ordinary differential equations with emphasis on problem solving and applications. The one-hour computer lab will give students an opportunity for hands-on experience with both the theory and applications of the subject. &lt;br /&gt;&lt;br /&gt;&lt;b&gt;Textbook:&lt;/b&gt; [&lt;a name="BDP"&gt;BDP&lt;/a&gt;] Boyce and DiPrima, &lt;i&gt;Elementary Differential Equations and Boundary Value Problems&lt;/i&gt;, 8th edition, John Wiley &amp;amp; Sons&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Homework:&lt;/b&gt; Assignments  will be collected weekly on Wednesdays (with some notable exceptions).  The problem numbers will be posted on this website at least one week prior to the due date. Besides the homework assignments, there will be computer projects due on every Tuesday, to be collected in the end of your lab session (more information about the labs can be obtained from your respective TA).&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Exams:&lt;/b&gt; There well be two &lt;b&gt;midterm exams&lt;/b&gt; (either in-class or evening) and a comprehensive &lt;b&gt;final exam&lt;/b&gt; (covering all material). The exact time and place will be specified at least two weeks in advance.</content><link rel='alternate' type='text/html' href='http://www.math.purdue.edu/~arshak/F07/MA366/blogger.html#2998749057961772068' title='Course Information'/><link rel='replies' type='application/atom+xml' href='http://www.math.purdue.edu/~arshak/F07/MA366/atom.xml' title='Post Comments'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/2998749057961772068'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/6083273923677513673/posts/default/2998749057961772068'/><author><name>arshak</name></author></entry></feed>