Topology, Homology, and Applications to Data

Please join us for a presentation by Inga Johnson (Dept. of Mathematics) this Friday, April 5th at 3:00 pm in the Library Hatfield Room. The title of her talk is: Topology, Homology, and Applications to Data

Abstract: Topology is the subfield of mathematics that is concerned with the study of shape. Mathematicians have studied topological questions for the past 250 years. However, in just the past 15 years topology has been found to have many different applications to real world problems. One of these is to use a topological tool called persistence homology to understand and analyze high dimensional and complex data sets.

This talk will be an introduction to topology and the concept of homology. We will then use homology to a look at examples of how topological ideas can be used to give new and surprising insight towards understanding data. This talk will emphasize examples and concepts. Prerequisites will be minimal.

As always, light refreshments will be provided.

Featured Database: PsycINFO

PsycINFO is currently one of our most heavily used databases at Willamette. This database is the APA’s renowned resource for abstracts of scholarly journal articles, book chapters, books, dissertations, and technical reports. It is the largest resource devoted to peer-reviewed literature in behavioral science and mental health, with the majority of the covered material being peer-reviewed. Whatever you find in PsycINFO will likely be high quality and reliable information. It covers the professional and academic literature in more than 1,300 journals in more than 30 languages!

Similar to all other Ebsco databases like Academic Search Premier, you can limit results to only full text and peer-review. If the full text is not available, don’t forget to click the little red “Find it at WU” button.  This button searches Willamette’s catalog for journals we have in print and electronically, and if we don’t have e-access to it or have it in print an interlibrary loan option will be provided.  It takes 2-3 days to get an article through interlibrary loan.

Another nice feature of this database is its ability to limit results to peer-reviewed literature just by checking a box (what is peer-review?).

One of the most powerful functions of this resource is the citation tool (screen shot below).  When you click on any of the article titles, an option on the right appears for citing the item.  You can copy and paste or export the citation info into bibliography management software like RefWorks.

If you’re doing psychology related research and haven’t tried PsycINFO yet, give it a shot and let us know what you think.  We’re sure you’ll like it!

Contact John Repplinger ( for comments or questions about this resource.


National Poetry Month 2013

If you didn’t know, April is National Poetry Month.  Created by the Academy of American Poets in 1996, National Poetry Month is held every April throughout the United States to celebrate poetry and its vital place in American culture. Thousands of organizations participate through readings, festivals, book displays, workshops, and other events.

For fun and inspirational ways to get involved, here’s a link to 30 ways of celebrating poetry.  For more information about National Poetry Month check out

Below is a sampling of recent poetry books that can be found in the Hatfield Library (posted during April on the WU Reads web page):

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The auroras : new poems – St. John, David

Call Number: PS3569.A4536 A95 2012


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By herself – Greger, Debora

Call Number: PS3557.R42 B9 2012




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The football corporations: poems – Heyen, William

Call Number: PS3558.E85 F66 2012



Congressional and Political Papers of Michael Kopetski

Michael J. Kopetski was born October 27, 1949 in Pendleton, Oregon. After graduate school, Kopetski worked as an aide to the Senate Select Committee on Presidential Campaign Activities, better known as the “Watergate Committee.” In 1985 he won election as a member of the Oregon House of Representatives. Following two unsuccessful runs for Congress in 1982 and 1988, Kopetski ran successfully in 1990, defeating incumbent Republican Denny Smith.

Kopetski was a member of the One Hundred Second and One Hundred Third Congresses (January 3, 1991-January 3, 1995) as a Democratic member. He was not a candidate for reelection in 1995. The Michael J. Kopetski Papers consist of papers generated and received by the office of Congressman Michael J. Kopetski during his two terms in the United States House of Representatives representing the Fifth District of the state of Oregon. Additional materials include papers generated and received by the office of Congressman Michael J. Kopetski during his two terms in the Oregon State Legislature.

For more information, visit our full finding aid for his congressional and political papers at: