Digital Commons Network^™

Passive All-Optical Diode Using Asymmetric Nonlinear Absorption, Reji Philip, M. Anij, Chandra S. Yelleswarapu, D.V.G.L.N. Rao

Physics Faculty Publications

Saturable and reverse saturable absorptions are well-known phenomena, originating from the imaginary component of the third order nonlinear optical susceptibility. We note that structures with an axially asymmetric nonlinear absorption can be easily realized from saturable and reverse saturable absorption materials arranged in tandem. In this paper, the basic transmission behavior of such a structure is worked out. Detailed numerical simulations demonstrate passive all-optical diode behavior, and the results are verified experimentally. The principle will work for all light polarizations, has no phase-matching restrictions, and can be extended to a large number of available nonlinear media for possible applications.

The Weekly Challenger, October 4, 2007, The Weekly Challenger, Et Al

Weekly Challenger Newspaper Collection

The October 4, 2007, issue of The Weekly Challenger.

Women In The Academy: Insider Voices With Outsider Values, Nancy Cantor

Chancellor's Collection

It is a great pleasure and a privilege to join you today at Emory University, home to one of the oldest Women's Studies doctoral programs in the nation and a university that has taken seriously, in both scholarship and action, the cause of women in the academy.

The Hilltop 10-4-2007, Hilltop Staff

The Hilltop: 2000 - 2010

No abstract provided.

Hip-Hop Developmenttm Bridging The Generational Divide For Youth Development, P. Thandi Hicks Harper, Warren A. Rhodes, Duane E. Thomas, George Leary

Journal of Youth Development

Hip-Hop culture in the lives of youth can not be ignored. This research is based on the premise that youth workers who expect ongoing successes must increase their Hip Hop culture competence. The study examined the knowledge of and attitude towards Hip-Hop by educators who participated in a Hip-Hop 101 workshop. Their perceptions relevant to the importance of Hip-Hop awareness and application for positively influencing youth behaviors were also explored. Results revealed that workshop participants significantly increased their Hip-Hop knowledge. They also demonstrated significantly more favorable attitudes toward Hip-Hop and its use for youth development. Findings suggest that the workshop …

Dacosta, Linval, Bronx African American History Project

Oral Histories

INTERVIEWER: Mark Naison, Natasha Lightfoot

INTERVIEWEE: Linval DaCosta

SUMMARY BY: Patrick O’Donnell

Linval DaCosta is a supervisor in the New York City Housing Authority and a head organizer for the Cricket in the Bronx league. He was born in Kingston, Jamaica in 1938 and came to the US on December 10, 1950, whereupon he joined his parents, who had already immigrated. He did his elementary-middle schooling in Harlem, attended Stuyvesant High, and then went to CUNY Baruch for college, where he was (and continues to be) a member of the NAACP. He grew up playing cricket and soccer in …

Band Unfoldings And Prismatoids: A Counterexample, Joseph O'Rourke

Computer Science: Faculty Publications

This note shows that the hope expressed in [ADL+07]--that the new algorithm for edge-unfolding any polyhedral band without overlap might lead to an algorithm for unfolding any prismatoid without overlap--cannot be realized. A prismatoid is constructed whose sides constitute a nested polyhedral band, with the property that every placement of the prismatoid top face overlaps with the band unfolding.

Does Interference Competition With Wolves Limit The Distribution And Abundance Of Coyotes?, Kim Murray Berger, Eric M. Gese

United States Department of Agriculture Wildlife Services: Staff Publications

1. Interference competition with wolves Canis lupus is hypothesized to limit the distribution and abundance of coyotes Canis latrans, and the extirpation of wolves is often invoked to explain the expansion in coyote range throughout much of North America.

2. We used spatial, seasonal and temporal heterogeneity in wolf distribution and abundance to test the hypothesis that interference competition with wolves limits the distribution and abundance of coyotes. From August 2001 to August 2004, we gathered data on cause-specific mortality and survival rates of coyotes captured at wolf-free and wolf-abundant sites in Grand Teton National Park (GTNP), Wyoming, USA, …

Hip-Hop Developmenttm Bridging The Generational Divide For Youth Development, P. Thandi Hicks Harper, Warren A. Rhodes, Duane E. Thomas, George Leary

Journal of Youth Development

Hip-Hop culture in the lives of youth can not be ignored. This research is based on the premise that youth workers who expect ongoing successes must increase their Hip Hop culture competence. The study examined the knowledge of and attitude towards Hip-Hop by educators who participated in a Hip-Hop 101 workshop. Their perceptions relevant to the importance of Hip-Hop awareness and application for positively influencing youth behaviors were also explored. Results revealed that workshop participants significantly increased their Hip-Hop knowledge. They also demonstrated significantly more favorable attitudes toward Hip-Hop and its use for youth development. Findings suggest that the workshop …

The Missouri Miner, October 4, 2007

The Missouri Miner Newspaper

No abstract provided.

The Characterization Of Trna Modifying Enzymes S-Adenosylmethionine : Trna Ribosyltransferase-Isomerase (Quea) And A Novel Type I Gtp Cyclohydrolase, Shilah Amal Bonnett

Dissertations and Theses

Queuosine is a hypermodified nucleoside located in the wobble position of bacterial and eukaryotic tRNAs coding for Asp, Tyr, His and Asn. The biosynthesis involves the participation of S-adenosyl-methionine:tRNA ribosyltransferase-isomerase (QueA) and a GTP Cyclohydrolase-I. QueA catalyzes the transfer and isomerization of the ribosyl moiety from AdoMet to preQ1 modified tRNA. Substrate analogs of AdoMet were used to elucidate important substrate-enzyme interactions and to test key steps in the proposed chemical mechanism. Replacing AdoMet with SeAdoMet had little effect upon substrate binding but exhibited 30-fold reduction in kcat, consistent with deprotonation at C-5' as the first catalytic step. 7-deazaAdoMet failed …

Washington University Record, October 4, 2007

Washington University Record

No abstract provided.

October 3, 2007 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

October 3, 2007 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

The Cord Weekly (October 3, 2007)

The Cord

No abstract provided.

The Register, 2007-10-03, North Carolina Agricutural And Technical State University

NCAT Student Newspapers

No abstract provided.

Multiple Model Evaluation Absent The Gold Standard Via Model Combination, Edwin J. Iversen, Jr., Giovanni Parmigiani, Sining Chen

Johns Hopkins University, Dept. of Biostatistics Working Papers

We describe a method for evaluating an ensemble of predictive models given a sample of observations comprising the model predictions and the outcome event measured with error. Our formulation allows us to simultaneously estimate measurement error parameters, true outcome — aka the gold standard — and a relative weighting of the predictive scores. We describe conditions necessary to estimate the gold standard and for these estimates to be calibrated and detail how our approach is related to, but distinct from, standard model combination techniques. We apply our approach to data from a study to evaluate a collection of BRCA1/BRCA2 gene …

Mustang Daily, October 3, 2007

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

The Spinnaker Vol. 31 No. 9, University Of North Florida

Spinnaker

Student newspaper for the UNF community

Minutes Of Graduate College Curriculum Committee, October 3, 2007, University Of Northern Iowa. Graduate College Curriculum Committee.

Minutes - Graduate Curriculum Committee

Minutes of the committee that oversees the development of the curriculum of the University of Northern Iowa Graduate College.

The Lumberjack, October 03, 2007

Cal Poly Humboldt's Student Newspaper

The student newspaper of Humboldt State University.

The Guardian, October 03, 2007, Wright State University Student Body

The Guardian Student Newspaper

Sixteen page issue of The Guardian, the official student-run newspaper for Wright State University. The Guardian has been published regularly since March of 1965.

Optimal Control Of Class Of Non-Linear Plants Using Artificial Immune Systems: Application Of The Clonal Selection Algorithm, S. A. Panimadai Ramaswamy, Ganesh K. Venayagamoorthy, S. N. Balakrishnan

Electrical and Computer Engineering Faculty Research & Creative Works

The function of natural immune system is to protect the living organisms against invaders/pathogens. Artificial Immune System (AIS) is a computational intelligence paradigm inspired by the natural immune system. Diverse engineering problems have been solved in the recent past using AIS. Clonal selection is one of the few algorithms that belong to the family of AIS techniques. Clonal selection algorithm is the computational implementation of the clonal selection principle. The process of affinity maturation of the immune system is explicitly incorporated in this algorithm. This paper presents the application of AIS for the optimal control of a class of non-linear …

Interactions Across Spatial Scales Among Forest Dieback, Fire, And Erosion In Northern New Mexico Landscapes, Craig D. Allen

School of Natural Resources: Faculty Publications

Ecosystem patterns and disturbance processes at one spatial scale often interact with processes at another scale, and the result of such cross-scale interactions can be nonlinear dynamics with thresholds. Examples of cross-scale pattern-process relationships and interactions among forest dieback, fire, and erosion are illustrated from northern New Mexico (USA) landscapes, where long-term studies have recently documented all of these disturbance processes. For example, environmental stress, operating on individual trees, can cause tree death that is amplified by insect mortality agents to propagate to patch and then landscape or even regional-scale forest dieback. Severe drought and unusual warmth in the southwestern …

Non-Ossicular Signal Transmission In Human Middle Ears: Experimental Assessment Of The "Acoustic Route" With Perforated Tympanic Membranes, Susan E. Voss, John J. Rosowski, Saumil N. Merchant, William T. Peake

Engineering: Faculty Publications

Direct acoustic stimulation of the cochlea by the sound-pressure difference between the oval and round windows (called the "acoustic route") has been thought to contribute to hearing in some pathological conditions, along with the normally dominant "ossicular route." To determine the efficacy of this acoustic route and its constituent mechanisms in human ears, sound pressures were measured at three locations in cadaveric temporal bones [with intact and perforated tympanic membranes (TMs)]: (1) in the external ear canal lateral to the TM, PTM; (2) in the tympanic cavity lateral to the oval window, POW; and (3) near the round window, PRW. …

Information Literacy For Branch Campuses And Branch Libraries, James Hooks, Carl Rahkonen, Chris Clouser, Kelly Heider, Rena Fowler

Library Philosophy and Practice (e-journal)

Although information literacy objectives are a constant, teaching methods and pedagogy must be structured differently in different teaching-learning environments. The Libraries of Indiana University of Pennsylvania (IUP) created a new model of library instruction for its branch libraries and branch campuses, based on the embedded or college librarian model. Librarians for music, science, education, and the IUP Northpointe campus have been integrated into the instruction and curricular activities of those locations, some of which include distance education programs. While this model has logistical and political challenges, it has proved beneficial in improving information literacy for both faculty and students, and …

Bard Observer, Vol. 18, No. 2 (October 2, 2007), Bard College

Bard Observer - All Issues (1956 - Current)

No abstract provided.

Holy Cross Magazine, Vol. 41, No. 4, Fall 2007, College Of The Holy Cross

Holy Cross Magazine

Far-Flung Friends
Many journeys began on the slopes of Mount St. James, and Holy Cross alumni can be found all over this ever-shrinking planet. What is it that drives these wanderers? Meet nine alums who took the road less traveled. Where did they go? Why did they leave? And what did they learn?
By James Dempsey
Illustrations by Michael Weldon

The V-12 Program
While World War II raged, the College faced the wholesale emptying of its classrooms as young men enlisted—or were drafted, into the armed services. Then, in July 1943, Holy Cross became one of 131 institutions across the …

Daily Eastern News: October 2, 2007, Eastern Illinois University

October

No abstract provided.

Lochsa Falls V. Idaho State Dept. Of Transportation Appellant's Brief Dckt. 34039

Idaho Supreme Court Records & Briefs, All

No abstract provided.