From iaw at MIT.EDU  Mon Nov 13 10:36:55 2006
From: iaw at MIT.EDU (Ian Waitz)
Date: Mon, 13 Nov 2006 10:36:55 -0500
Subject: [Unified-mailman] Fwd: Cogen server has been compromised
Message-ID: <p06230926c17e40acea0d@[10.0.1.2]>

Unified Students,

For the problem set that will be posted today, there is a thermo 
problem where you are asked to record and analyze data from the MIT 
Cogen plant (via a web interface).  I just received the note below 
about an issue with the server.  For now, assume that the homework 
problem is still due next Tuesday  -- I will let you know when I 
learn more.

Thanks,

- Ian

>X-Sieve: CMU Sieve 2.2
>Subject: Cogen server has been compromised
>Date: Mon, 13 Nov 2006 07:49:54 -0500
>Thread-Topic: Cogen server has been compromised
>Thread-Index: AccHIjdOjq+spfhfRrugPqUvFDBCzg==
>From: "Daniel Crovo" <DCrovo at PLANT.MIT.EDU>
>To: <iaw at mit.edu>
>
>Dear Professor Waitz,
>
>I was informed this morning that our web server, cogen.mit.edu, was 
>compromised over the weekend and that I must disconnect it from the 
>network.
>
>I've already contacted Chris Russo who is currently closing network 
>access to the machine.
>
>We will work as quickly as we can to correct this problem. I'll let 
>you know when I have an estimated return to service.
>
>Sincerely,
>Dan Crovo
>MIT Central Utilities Plant
>3-4660


-- 
*******************************************************************
M A S S A C H U S E T T S  I N S T I T U T E  O F  T E C H N O L O G Y

Ian A. Waitz                       
Professor, MIT Department of Aeronautics and Astronautics
website: http://web.mit.edu/aeroastro/people/waitz/

Director of the Partnership for AiR Transportation Noise and 
Emissions Reduction (PARTNER)
website: http://mit.edu/aeroastro/partner

Bldg. 33-408, MIT                 			Phone: 
617-253-0218           
77 Massachusetts Avenue			Fax: 617-258-0863
Cambridge, MA 02139-4307			email:iaw at mit.edu
          

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From h at MIT.EDU  Mon Nov 13 20:46:21 2006
From: h at MIT.EDU (Ophelia)
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From q at MIT.EDU  Mon Nov 13 20:59:13 2006
From: q at MIT.EDU (Ophelia)
Date: Mon, 13 Nov 2006 20:59:13 --800 (EET)
Subject: [Unified-mailman] top notch home loans at low rates
Message-ID: <3f2d01c70766$01c70766$db84ea7d@mit.edu>

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From ro at MIT.EDU  Tue Nov 14 04:42:04 2006
From: ro at MIT.EDU (Nathan)
Date: Tue, 14 Nov 2006 11:42:04 +0200 (EET)
Subject: [Unified-mailman] burch
Message-ID: <575d01c707e1$01c707e1$6fbaf158@mit.edu>

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From u at MIT.EDU  Tue Nov 14 10:20:27 2006
From: u at MIT.EDU (Trenton)
Date: Tue, 14 Nov 2006 17:20:27 +0200 (EET)
Subject: [Unified-mailman] unbelievable funding made simple
Message-ID: <328a01c70811$01c70811$ab58ea58@mit.edu>

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From iaw at MIT.EDU  Tue Nov 14 11:52:24 2006
From: iaw at MIT.EDU (Ian Waitz)
Date: Tue, 14 Nov 2006 11:52:24 -0500
Subject: [Unified-mailman] Thurs. Nov 16th  MATLAB tutorial
Message-ID: <p06230963c17fa33a99b7@[10.0.1.2]>

Unified Students,

As I discussed in class today, we will have a second Matlab Tutorial 
this Thursday (11/16).  The tutorial will include more advanced 
applications related to linear systems (eigenvalues/eigenvectors and 
convolution).  These applications will be important for your work in 
Signals and Systems in Unified.

The format, timing, location, etc. will be the same as last time (see 
below).  We will again give participation credit to those who attend.

- Ian

>X-Sieve: CMU Sieve 2.2
>To: unified-student at MIT.EDU
>cc: unified-prof at MIT.EDU, Violeta Ivanova <violeta at MIT.EDU>
>Subject: MATLAB tutorial!
>Date: Mon, 16 Oct 2006 17:26:08 -0400
>From: Mark Drela <drela at MIT.EDU>
>
>
>Folks,
>
>This coming Thursday, Oct 19, we will not be having
>a lab lecture in 35-225.  Instead, we are offering
>a MATLAB tutorial that day, given by Ms. Violeta Ivanova
>from MIT Academic Computing. 
>
>This will be a 2-hour tutorial, which we will split into
>two 1-hour parts that day:
>   Part 1:  10-11 AM  in 37-312
>   Part 2:   1-2  PM  in 37-312
>
>If you are not familiar with MATLAB, we strongly
>urge you to take this tutorial.  It will be very useful
>in the UE Flight Competition design work next term,
>as well as other subsequent Aero-Astro courses.
>For this reason, we will be giving class participation
>(PRS) credit for students who attend this tutorial.
>
>Seating in 37-312 is limited, with only 25 terminals,
>and so we cannot realistically fit the entire UE class
>even with 2 people per terminal.  We will handle this
>as follows:
>
>* The tutorial this week is first-come first-serve.
>We might put two people on each terminal if necessary.
>If you have your own laptop with MATLAB, we should have
>enough empty table space available.
>
>* For people who can't get a seat at a terminal, we will be
>offering the same tutorial sometime in the next few weeks,
>exact times TDB.
>
>
>If you have a laptop and would like to install MATLAB on it,
>I strongly suggest you do so now, and then bring your laptop
>to the MATLAB tutorial.  Information for getting MATLAB
>is in the forwarded email below.
>
>Thanks, and we hope you can make one of the MATLAB tutorial days.
>
>MD
>
>------- Forwarded Message
>
>Return-Path: <violeta at MIT.EDU>
>Received: from po9.mit.edu ([unix socket])
>	by po9.mit.edu (Cyrus v2.1.5) with LMTP; Mon, 16 Oct 2006 
>14:34:37 -0400
>X-Sieve: CMU Sieve 2.2
>Received: from biscayne-one-station.mit.edu by po9.mit.edu 
>(8.13.6/4.7) id k9GIYaex012558; Mon, 16 Oct 2006 14:34:37 -0400 (EDT)
>Received: from outgoing.mit.edu (OUTGOING-AUTH.MIT.EDU [18.7.22.103])
>	by biscayne-one-station.mit.edu (8.13.6/8.9.2) with ESMTP id 
>k9GIWGLq000665
>	for <drela at mit.edu>; Mon, 16 Oct 2006 14:34:36 -0400 (EDT)
>Received: from [18.152.3.120] (GALADRIEL.MIT.EDU [18.152.3.120])
>	(authenticated bits=0)
>         (User authenticated as violeta at ATHENA.MIT.EDU)
>	by outgoing.mit.edu (8.13.6/8.12.4) with ESMTP id k9GI9BNE002303
>	(version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT)
>	for <drela at mit.edu>; Mon, 16 Oct 2006 14:09:11 -0400 (EDT)
>Mime-Version: 1.0 (Apple Message framework v752.2)
>To: Mark Drela <drela at mit.edu>
>Message-Id: <9DA3D9C1-86D4-440E-B58A-F47991BB16EB at mit.edu>
>Content-Type: multipart/alternative; boundary=Apple-Mail-1-178840313
>From: Violeta Ivanova <violeta at MIT.EDU>
>Subject: MATLAB for MIT students download
>Date: Mon, 16 Oct 2006 14:09:10 -0400
>X-Mailer: Apple Mail (2.752.2)
>X-Spam-Score: -3.782
>X-Spam-Flag: NO
>X-Scanned-By: MIMEDefang 2.42
>
>
>- --Apple-Mail-1-178840313
>Content-Transfer-Encoding: 7bit
>Content-Type: text/plain;
>	charset=US-ASCII;
>	delsp=yes;
>	format=flowed
>
>Hi Mark,
>
>Students can find instructions and information on getting MATLAB at 
>the Mathematical Tools at MIT portal: http://web.mit.edu/ist/topics/math .
>There is a link, Free MATLAB For Students, which will take them 
>directly to the download site.
>
>Only MIT students can access the download site, i.e. they need to 
>have a valid certificate in the browser they are using. If they don't 
>have a certificate yet, they can get it from here:
>http://web.mit.edu/ist/topics/certificates/index.html .
>
>If they have limited space on their computers, they can install the 
>"MATLAB Lite", which should have all the toolboxes they need for 
>Unified.
>
>Regards,
>Violeta
>
>- ---------------------------------
>Violeta M Ivanova, Ph.D.
>Educational Technology Consultant
>MIT Academic Computing
>http://web.mit.edu/violeta/www
>617.252.1383
>
>------- End of Forwarded Message


-- 
*******************************************************************
M A S S A C H U S E T T S  I N S T I T U T E  O F  T E C H N O L O G Y

Ian A. Waitz                       
Professor, MIT Department of Aeronautics and Astronautics
website: http://web.mit.edu/aeroastro/people/waitz/

Director of the Partnership for AiR Transportation Noise and 
Emissions Reduction (PARTNER)
website: http://mit.edu/aeroastro/partner

Bldg. 33-408, MIT                 			Phone: 
617-253-0218           
77 Massachusetts Avenue			Fax: 617-258-0863
Cambridge, MA 02139-4307			email:iaw at mit.edu
          

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From iaw at MIT.EDU  Thu Nov 16 13:39:50 2006
From: iaw at MIT.EDU (Ian Waitz)
Date: Thu, 16 Nov 2006 13:39:50 -0500
Subject: [Unified-mailman] thermo notes
In-Reply-To: <b8a7ee060611160801x46ef0d3u9c3b084c11c6aa60@mail.gmail.com>
References: <b8a7ee060611160801x46ef0d3u9c3b084c11c6aa60@mail.gmail.com>
Message-ID: <p06230905c18260351470@[208.54.114.96]>

Unified students,

Several of you have asked me about a .pdf file to download the thermo 
notes.  This is available (and has been available).  The link is 
below the lecture table on the thermo site.  Make sure you have a 
fast link when you download it -- the file is 64MB.

Please let me know if you have any difficulties accessing it.

Best wishes,

- Ian

>Professor Waitz,
>
>Is it possible for you to post the thermo notes in PDF form online? 
>The current format that its in makes it difficult to print-often 
>times diagrams or words get cut off. 
>

-- 
*******************************************************************
M A S S A C H U S E T T S  I N S T I T U T E  O F  T E C H N O L O G Y

Ian A. Waitz                       
Professor, MIT Department of Aeronautics and Astronautics
website: http://web.mit.edu/aeroastro/people/waitz/

Director of the Partnership for AiR Transportation Noise and 
Emissions Reduction (PARTNER)
website: http://mit.edu/aeroastro/partner

Bldg. 33-408, MIT                 			Phone: 
617-253-0218           
77 Massachusetts Avenue			Fax: 617-258-0863
Cambridge, MA 02139-4307			email:iaw at mit.edu
          




From iaw at MIT.EDU  Fri Nov 17 21:55:44 2006
From: iaw at MIT.EDU (Ian Waitz)
Date: Fri, 17 Nov 2006 21:55:44 -0500
Subject: [Unified-mailman] T7
In-Reply-To: <20061117144407.xpi1sq49iv3jkos@webmail.mit.edu>
References: <20061117144407.xpi1sq49iv3jkos@webmail.mit.edu>
Message-ID: <p06230929c18425b0e3aa@[208.54.114.96]>

Unified students,

>Just a quick question: Does it matter what type of cycle we consider the heat
>engine and refrigerator to use for part b? I feel like it matters, b/c the
>temperature difference between the respective reservoirs seems important, but
>the relation between these temperature differences and the heat transfers and
>work should differ for different cycles.


For T7 part b), please assume a Carnot cycle as in part a).

[Note also, I am still uncertain relative to the status of the Cogen 
website.  I will keep you posted.  If it doesn't get sorted out soon, 
I will extend the due date for T9.]

Best wishes,

- Ian


-- 
*******************************************************************
M A S S A C H U S E T T S  I N S T I T U T E  O F  T E C H N O L O G Y

Ian A. Waitz                       
Professor, MIT Department of Aeronautics and Astronautics
website: http://web.mit.edu/aeroastro/people/waitz/

Director of the Partnership for AiR Transportation Noise and 
Emissions Reduction (PARTNER)
website: http://mit.edu/aeroastro/partner

Bldg. 33-408, MIT                 			Phone: 
617-253-0218           
77 Massachusetts Avenue			Fax: 617-258-0863
Cambridge, MA 02139-4307			email:iaw at mit.edu
          




From v at MIT.EDU  Sat Nov 18 08:04:24 2006
From: v at MIT.EDU (Jamel)
Date: Sat, 18 Nov 2006 14:04:24 +0100 (EET)
Subject: [Unified-mailman] extending financing hassle free
Message-ID: <067801c70b1a$01c70b1a$df15c756@mit.edu>

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From srhall at MIT.EDU  Sat Nov 18 16:45:09 2006
From: srhall at MIT.EDU (Steven R. Hall)
Date: Sat, 18 Nov 2006 16:45:09 -0500
Subject: [Unified-mailman] Correction to Signals homework
Message-ID: <635D97A9-732F-4097-B33E-85149BA1C918@mit.edu>

Folks,

I sent this out earlier this week, but some folks didn't get it.  
There are a couple of small corrections to the Signals pset:

On Problem S3, the resistor values for R6 was inadvertently left out.  
It is R6 = 6 ohm. Also, on part 2, the sum should be over all 8  
elements, so from n=1 to 8. That applies to Problem S8 as well.

The problems have been corrected on the Signals web page.

My apologies for the confusion.

Steve Hall


From vgy at MIT.EDU  Sun Nov 19 07:22:36 2006
From: vgy at MIT.EDU (Emmett)
Date: Sun, 19 Nov 2006 13:22:36 +0100 (EET)
Subject: [Unified-mailman] lip rototill
Message-ID: <7b1701c70bdd$01c70bdd$aac5d957@mit.edu>

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From iaw at MIT.EDU  Sun Nov 19 09:42:07 2006
From: iaw at MIT.EDU (Ian Waitz)
Date: Sun, 19 Nov 2006 09:42:07 -0500
Subject: [Unified-mailman] Fwd: Unified students' confusion
Message-ID: <p06230940c1861cd13613@[208.54.114.96]>

Dear Unified students,

Please review the following note from Nivair regarding the 
assumptions for pv^gamma = constant.  I will also review this in 
lecture.

Best wishes,

- Ian

>
>
>Dear Professor Waitz,
>
>As I was grading T4, I noticed one thing that I thought I should 
>mention to you. This was a heavily conceptual problem, and a lot of 
>students seemed to be having trouble with one thing in particular. 
>Since this is also something I noticed a lot people asking about 
>when I did PRS for Wednesday's lecture, I thought I should tell you 
>in case you have time to clear it up on Monday.
>
>They all seem to want to use PV^gamma = constant (or the equivalent 
>P/T relation), either for all situations or for just situations that 
>are quasi-static. It seems like almost nobody knows that that 
>relation is only applicable for an ideal gas undergoing an adiabatic 
>quasi-static process, which is worrisome considering they'll soon be 
>taking a test on this material!
>
>I remember you clarifying that last year, too, and maybe this is a 
>common source of confusion and I'm worrying about nothing.  For what 
>it's worth, though, I think that's a big issue.
>
>Thanks!
>
>Nivair

-- 
*******************************************************************
M A S S A C H U S E T T S  I N S T I T U T E  O F  T E C H N O L O G Y

Ian A. Waitz                       
Professor, MIT Department of Aeronautics and Astronautics
website: http://web.mit.edu/aeroastro/people/waitz/

Director of the Partnership for AiR Transportation Noise and 
Emissions Reduction (PARTNER)
website: http://mit.edu/aeroastro/partner

Bldg. 33-408, MIT                 			Phone: 
617-253-0218           
77 Massachusetts Avenue			Fax: 617-258-0863
Cambridge, MA 02139-4307			email:iaw at mit.edu