aspuru-list February 2007

aspuru-list@lists.fas.harvard.edu

16 participants
64 discussions

[Aspuru-Guzik group list] Visual material for poster (and website)

by Alan Aspuru-Guzik

Dear group, As you can tell, if I get stranded in Las Vegas due to snow, I end up writing a lot of e-mail! Sorry for the day-spam. I think our website has to be even better, especially with more content. So if you have any graphics for the posters, please also think of making graphics for the website (for updating our research interests page). Also, some of you have absent or small personal pages. Remember this is your window to the world, so you might want to spend some time making your own wiki page nice (of course, this is not a requirement, but it is for your benefit). In any case, I updated the group news section, please feel free to add any news that you want! and let's think of new designs, for example look at the brain on a chip guys, their site is a notch above ours, do you guys like it? http://bioengineering.stanford.edu/faculty/boahen.html Alan -- Alan Aspuru-Guzik Assistant Professor Department of Chemistry and Chemical Biology 12 Oxford Street Harvard University Cambridge, MA 02138 Tel: (617)384-8188 Group URL: http://aspuru.chem.harvard.edu

17 years, 2 months

[Aspuru-Guzik group list] Video.

by Alan Aspuru-Guzik

Dear friends, I share this funny quantum computing video with you :) http://www.dwavesys.com/index.php?page=premium-videos Alan -- Alan Aspuru-Guzik Assistant Professor Department of Chemistry and Chemical Biology 12 Oxford Street Harvard University Cambridge, MA 02138 Tel: (617)384-8188 Group URL: http://aspuru.chem.harvard.edu

17 years, 2 months

[Aspuru-Guzik group list] Student volunteers needed :)

by Alan Aspuru-Guzik

Dear group, I need two student volunteers to do the posters for this year! I propose to create them in Open Office Draw, Powerpoint or similar, and then re-cycle them over the years adding new stuff. Who wants to volunteer? People would have to send them pictures and slides of what we are doing and I think we can put together something really fast. Cheers, Alan ---------- Forwarded message ---------- From: Kathy Weldon <weldon(a)chemistry.harvard.edu> Date: Feb 14, 2007 7:03 PM Subject: G-0 Visits: 4:30-5:30pm Poster Session To: faculty(a)chemistry.harvard.edu Cc: faculty_staff(a)chemistry.haravrd.edu Dear Faculty, In preparation for the March G-0 visit weekends, a poster session is being planned to showcase the research being done in our department. Each research group may include up to two posters (and two official student reps). Please plan on the: G-0 Poster Session two Fridays: March 16 and March 23 4:30-5:30 pm, Department Center for: G-0s and current graduate student representatives, selected by P.I.s Please select two students in your group whom you would like to present the posters. I will then coordinate the logistics with the graduate student representatives directly when we get a bit closer to the visit. I wanted to give you and your students a heads-up now, as I know it takes time to put a poster together. Sincerely, Kathy Kathy Weldon Graduate Program Administrator Admissions & Industrial Recruiting Harvard University Department of Chemistry & Chemical Biology 12 Oxford Street Cambridge, MA 02138 (617) 496-3208 (voice) (617) 496-5618 (fax) weldon(a)chemistry.harvard.edu -- Alan Aspuru-Guzik Assistant Professor Department of Chemistry and Chemical Biology 12 Oxford Street Harvard University Cambridge, MA 02138 Tel: (617)384-8188 Group URL: http://aspuru.chem.harvard.edu

17 years, 2 months

Re: [Aspuru-Guzik group list] Polymer filled membranes report

by Alan Aspuru-Guzik

Dear Sergio, I am available for the whole day except 12.00-1.30 when I give a talk about Wikis in education. So what we could if you want to arrive before noon, is to meet (let's say 11?) then you guys can go to lunch while I go talk about Wikis, and then I meet you after and we have a group meeting/presentation with the people involved in the project (Sule, Laura, interested students, etc.) Alan On 2/13/07, Sergio Granados <granados.sergio(a)mail.pse.umass.edu> wrote: > > > Alan: > > Please find attached a report summarizing the latest results of our work > with nanocomposite alumina-proton conductive polymer membranes. We can > discuss the data in more detail on Friday. > > Chris and I were wondering about the schedule for Friday, what time would > you like us to get to Harvard? > > Cheers, > > Sergio. > > -- Alan Aspuru-Guzik Assistant Professor Department of Chemistry and Chemical Biology 12 Oxford Street Harvard University Cambridge, MA 02138 Tel: (617)384-8188 Group URL: http://aspuru.chem.harvard.edu

17 years, 2 months

[Aspuru-Guzik group list] [iic-seminars] [Colloquium] CS Colloquium 3/1/07 - Byron Cook

by colloquium＠deas.harvard.edu

Harvard University Computer Science Colloquium Series 33 Oxford St., Cambridge, MA 02138 Colloquium Automatic termination proofs for software Byron Cook Microsoft http://research.microsoft.com/~bycook Thursday, March 1, 2007 4:00PM Maxwell Dworkin G125 (Ice Cream at 3:30PM - Maxwell Dworkin 2nd Floor Lounge Area) Abstract I will describe recent advances in the area of automatic program termination analysis. I will also discuss TERMINATOR, the Microsoft tool which implements these recent advances. We've recently used TERMINATOR to prove that Windows device driver dispatch routines always return control back to their caller. TERMINATOR has also found a number of critical termination bugs in device drivers. Host: Professor Norman Ramsey _______________________________________________ Colloquium mailing list Colloquium(a)deas.harvard.edu https://lists.deas.harvard.edu/mailman/listinfo/colloquium _______________________________________________ iic-seminars mailing list iic-seminars(a)calists.harvard.edu http://calists.harvard.edu/mailman/listinfo/iic-seminars

17 years, 2 months

[Aspuru-Guzik group list] [iic-seminars] IIC Seminar Reminder - Eamonn Keogh - TODAY

by Helene Tingle

Initiative in Innovative Computing @ Harvard Seminar Series Wednesday, February 14, 2007; 4:00pm 60 Oxford Street, Room 330 Eamonn Keogh, Associate Professor, Computer Science & Engineering Department, University of California - Riverside Seminar Title: Algorithms and Representations for Mining Massive Collections of Time Series and Shapes Abstract To date, the vast majority of research on time series and shape data mining has focused on similarity search and clustering. I believe that these problems should now be regarded as essentially solved. In particular, there are now fast exact techniques for searching and clustering patterns under both the Euclidean distance and Dynamic Time Warping, the two most useful distance measures. However, from a knowledge discovery viewpoint, there are much more interesting problems, the detection of previously /unknown/ patterns and relationships in time series and shape databases. Two concrete examples are finding the most unusual objects (discord discovery) and finding repeated objects (motif discovery). While there are many representations that can be used to solve these problems (i.e. wavelets, Fourier methods etc), in this talk I argue that solutions which are scalable to massive datasets will require / symbolic/ representations. The talk will be illustrated with examples from anthropology, law enforcement, biology and mining of historical texts. Upcoming IIC seminars Continue to stay up to date with our IIC Seminar Schedule. Parking is available in the 52 Oxford Street Garage. Please tell the attendant that you are attending the IIC Seminar. _______________________________________________ iic-seminars mailing list iic-seminars(a)calists.harvard.edu http://calists.harvard.edu/mailman/listinfo/iic-seminars

17 years, 2 months

[Aspuru-Guzik group list] [iic-seminars] [Colloquium] REMINDER: Modeling Neocortical Networks with Short-term Synaptic Plasticity (Misha Tsodyks)

by colloquium＠deas.harvard.edu

my.harvard calendar reminder: Event Information: Date : 2/14/2007 Start Time : 02:30 PM End Time : 04:00 PM Title : Modeling Neocortical Networks with Short-term Synaptic Plasticity (Misha Tsodyks) Description : COMPUTATIONAL NEUROSCIENCE COLLOQUIUM Modeling Neocortical Networks with Short-term Synaptic Plasticity Misha Tsodyks Weizmann Institute Wednesday, February 14, 2.30pm Maxwell Dworkin 115 ABSTRACT Recurrent connections in neocortical circuits exhibit pronounced activity-dependent short-term plasticity--synaptic depression/facilitation--but the role it plays in information processing is still not clear. Recent experiments indicate that synaptic properties may systematically change when moving along the information stream from the sensory areas towards the prefrontal cortex. In particular, it was found that connections between pyramidal neurons in the prefrontal cortex are more diverse, with substantial fraction of them exhibiting strong facilitation, as opposed to corresponding connections in the sensory areas that are predominantly depressing. To uncover the potential functional implications of these diverse properties, we analyzed two different recurrent networks. In the first study, we describe the information processing via temporal neuronal synchronization (which we call 'Population Spikes') in network with synaptic depression. In particular, we constructed a neura l network model of primary auditory cortex that responds to complex sounds with specific spatio-temporal pattern of population spikes at different iso-frequency columns. In the second study, we analyzed the attractor neural network model of persistent activity with synaptic facilitation. Depending on the strength of synaptic facilitation, the network exhibits qualitatively different regimes of convergence to persistent activity sate, from fast irreversible transition with population spike, to slow reversible transition. We then considered the attractor neural network of interacting sub-populations with different synaptic properties, and observed an emerging new selectivity of the resulting persistent state to the temporal profile of the triggering input. Host: Leslie Valiant Location : Maxwell Dworkin G115 URL : Phone : Calendar : Computer Science Colloquium Series _______________________________________________ Colloquium mailing list Colloquium(a)deas.harvard.edu https://lists.deas.harvard.edu/mailman/listinfo/colloquium _______________________________________________ iic-seminars mailing list iic-seminars(a)calists.harvard.edu http://calists.harvard.edu/mailman/listinfo/iic-seminars

17 years, 2 months

[Aspuru-Guzik group list] Chips.

by Alan Aspuru-Guzik

Some people are trying to make CLASSICAL chips that are "printed" with the same connection as the brain. Some other people (us) are trying to design QUANTUM chips with the same connections as a reaction center: cool! http://www.technologyreview.com/read_article.aspx?id=18164&ch=infotech http://bioengineering.stanford.edu/faculty/boahen.html -- Alan Aspuru-Guzik Assistant Professor Department of Chemistry and Chemical Biology 12 Oxford Street Harvard University Cambridge, MA 02138 Tel: (617)384-8188 Group URL: http://aspuru.chem.harvard.edu

17 years, 2 months

[Aspuru-Guzik group list] [iic-seminars] [Colloquium] Wed., Feb. 14, 2007 - Computational Neuroscience Colloquium

by colloquium＠deas.harvard.edu

COMPUTATIONAL NEUROSCIENCE COLLOQUIUM Modeling Neocortical Networks with Short-term Synaptic Plasticity Misha Tsodyks Weizmann Institute Wednesday, February 14, 2.30pm Maxwell Dworkin 115 ABSTRACT Recurrent connections in neocortical circuits exhibit pronounced activity-dependent short-term plasticity--synaptic depression/facilitation--but the role it plays in information processing is still not clear. Recent experiments indicate that synaptic properties may systematically change when moving along the information stream from the sensory areas towards the prefrontal cortex. In particular, it was found that connections between pyramidal neurons in the prefrontal cortex are more diverse, with substantial fraction of them exhibiting strong facilitation, as opposed to corresponding connections in the sensory areas that are predominantly depressing. To uncover the potential functional implications of these diverse properties, we analyzed two different recurrent networks. In the first study, we describe the information processing via temporal neuronal synchronization (which we call 'Population Spikes') in network with synaptic depression. In particular, we constructed a neural network model of primary auditory cortex that responds to complex sounds with specific spatio-temporal pattern of population spikes at different iso-frequency columns. In the second study, we analyzed the attractor neural network model of persistent activity with synaptic facilitation. Depending on the strength of synaptic facilitation, the network exhibits qualitatively different regimes of convergence to persistent activity sate, from fast irreversible transition with population spike, to slow reversible transition. We then considered the attractor neural network of interacting sub-populations with different synaptic properties, and observed an emerging new selectivity of the resulting persistent state to the temporal profile of the triggering input. Host: Leslie Valiant _______________________________________________ Colloquium mailing list Colloquium(a)deas.harvard.edu https://lists.deas.harvard.edu/mailman/listinfo/colloquium _______________________________________________ iic-seminars mailing list iic-seminars(a)calists.harvard.edu http://calists.harvard.edu/mailman/listinfo/iic-seminars

17 years, 2 months

[Aspuru-Guzik group list] [iic-seminars] IIC Seminar Reminder - Eamonn Keogh on Feb. 14, 2007

by Helene Tingle

Initiative in Innovative Computing @ Harvard Seminar Series Wednesday, February 14, 2007; 4:00pm 60 Oxford Street, Room 330 Eamonn Keogh, Associate Professor, Computer Science & Engineering Department, University of California – Riverside Seminar Title: Algorithms and Representations for Mining Massive Collections of Time Series and Shapes Abstract To date, the vast majority of research on time series and shape data mining has focused on similarity search and clustering. I believe that these problems should now be regarded as essentially solved. In particular, there are now fast exact techniques for searching and clustering patterns under both the Euclidean distance and Dynamic Time Warping, the two most useful distance measures. However, from a knowledge discovery viewpoint, there are much more interesting problems, the detection of previously unknown patterns and relationships in time series and shape databases. Two concrete examples are finding the most unusual objects (discord discovery) and finding repeated objects (motif discovery). While there are many representations that can be used to solve these problems (i.e. wavelets, Fourier methods etc), in this talk I argue that solutions which are scalable to massive datasets will require symbolic representations. The talk will be illustrated with examples from anthropology, law enforcement, biology and mining of historical texts. Upcoming IIC seminars Continue to stay up to date with our IIC Seminar Schedule. Please Note: The February 13, 2007 National Virtual Observatory Panel has been postponed. _______________________________________________ iic-seminars mailing list iic-seminars(a)calists.harvard.edu http://calists.harvard.edu/mailman/listinfo/iic-seminars

17 years, 2 months

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aspuru-list February 2007