Digital Commons Network^™

Probing Molecular Free Energy Landscapes By Periodic Loading, Oliver Braun, Andreas Hanke, Udo Seifert

Physics & Astronomy Faculty Publications

Single molecule pulling experiments provide information about interactions in biomolecules that cannot be obtained by any other method. However, the reconstruction of the molecule’s free energy profile from the experimental data is still a challenge, in particular, for the unstable barrier regions. We propose a new method for obtaining the full profile by introducing a periodic ramp and using Jarzynski’s relation for obtaining equilibrium quantities from nonequilibrium data. Our simulated experiments show that this method delivers significant more accurate data than previous methods, under the constraint of equal experimental effort.

First Upper Limits From Ligo On Gravitational Wave Bursts, B. P. Abbott, R. Abbott, Mario C. Diaz, Wm. R. Johnston, Joseph D. Romano, Cristina V. Torres

Physics & Astronomy Faculty Publications

We report on a search for gravitational wave bursts using data from the first science run of the Laser Interferometer Gravitational Wave Observatory (LIGO) detectors. Our search focuses on bursts with durations ranging from 4 to 100 ms, and with significant power in the LIGO sensitivity band of 150 to 3000 Hz. We bound the rate for such detected bursts at less than 1.6 events per day at a 90% confidence level. This result is interpreted in terms of the detection efficiency for ad hoc waveforms (Gaussians and sine Gaussians) as a function of their root-sum-square strain hrss; typical sensitivities …

Analysis Of First Ligo Science Data For Stochastic Gravitational Waves, B. P. Abbott, R. Abbott, Mario C. Diaz, Wm. R. Johnston, Joseph D. Romano

Physics & Astronomy Faculty Publications

We present the analysis of between 50 and 100 h of coincident interferometric strain data used to search for and establish an upper limit on a stochastic background of gravitational radiation. These data come from the first LIGO science run, during which all three LIGO interferometers were operated over a 2-week period spanning August and September of 2002. The method of cross correlating the outputs of two interferometers is used for analysis. We describe in detail practical signal processing issues that arise when working with real data, and we establish an observational upper limit on a f−3 power spectrum of …

Analysis Of Ligo Data For Gravitational Waves From Binary Neutron Stars, B. P. Abbott, R. Abbott, Wm. R. Johnston, Joseph D. Romano, V. Schmidt

Physics & Astronomy Faculty Publications

We report on a search for gravitational waves from coalescing compact binary systems in the Milky Way and the Magellanic Clouds. The analysis uses data taken by two of the three LIGO interferometers during the first LIGO science run and illustrates a method of setting upper limits on inspiral event rates using interferometer data. The analysis pipeline is described with particular attention to data selection and coincidence between the two interferometers. We establish an observational upper limit of R

Coalescence Remnant Of Spinning Binary Black Holes, J Baker, M. Campanelli, C. O. Lousto, R. Takahashi

Physics & Astronomy Faculty Publications

We compute the gravitational radiation generated in the evolution of a family of close binary black hole configurations, using a combination of numerical and perturbative approximation methods. We evolve the binaries with spins s aligned or counteraligned with the orbital angular momentum from near the innermost stable circular orbit down to the final single rotating black hole. For the moderately spinning holes studied here the remnant Kerr black holes formed at the end of an inspiral process have rotation parameters a/M≈0.72+0.32(s/mH), suggesting it is difficult (though not excluded) to end up with near maximally rotating holes from such scenarios.

The Collegian (2003-12-01), Sonia Mejia

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 56, No. 14

Four-Year Longitudinal Study On The Impact Of Migrant Student Identification On Academic Achievement, Graciela Villegas Perez

Theses and Dissertations - UTB/UTPA

The purpose of this research was to study the impact of migrant student identification or non-identification by receiving schools on academic achievement. The relationship between migrant students' achievement and the condition of identification by receiving schools and potential correlates, gender, age, birthplace and language proficiency was also analyzed.

This is a four year longitudinal study on one hundred seventy five migrant students' academic achievement in grades third, fourth, fifth and sixth. The study is divided into two parts. The first part is the data analysis of student records obtained from the New Generation System (NGS), which records the identification or …

Data Analysis In The Antes System, Yavuz Tor

Theses and Dissertations - UTB/UTPA

Acanthosis nigricans is a skin condition that can be used as an indicator for the risk of developing type 2 diabetes in the future. Border Health Office, in University of Texas - Pan American, organizes screenings in schools for acanthosis nigricans. Screening results are, then, collected and evaluated in the Border Health Office. The ANTES System is a computer system that stores and manages the data collected in those screenings.

This study is on the analysis of those collected data to track the progress of data entry, to evaluate the progress on obesity and related problems, and to discover the …

Visualization Of Internet Web Pages Based On Authority And Word Frequency, David Navarro

Theses and Dissertations - UTB/UTPA

The growth, accessibility, and integration of the World Wide Web with contemporary information utilization provides a rich domain in which to explore information retrieval systems. One approach in the evolution of retrieval systems couples successful and long-standing techniques of information retrieval with new techniques, such as visualization. The system developed and reported in this thesis takes this approach. It builds upon well-known techniques of information retrieval including stemming, keyword matching, and cosine similarity. It also incorporates the new and relatively successful hubs and authority approach, which describes Web documents by their reference by other documents. Finally, it develops a new …

Claus/Claws: A Journey Through Leonardland's Multivalent Meanings, Chris Leonard

Theses and Dissertations - UTB/UTPA

This exhibition paper presents the linkage of apparently unrelated topic and content. This arduous task is accomplished through an exploration of opposites and an overall presentation in the form of family fun or domestic distress disguised within personal world and the overall umbrella of homonyms: Claus (as in Santa) and Claws (as in cat). The work presented is a view of Leonardland, an intensely personal vision of my family and our history melded into a proposed future as seen through a wild conglomeration of seemingly dissimilar visions comprising the eclectic cultural mix that is our life on this geographic and …

Antes: A Web-Based Acanthosis Nigricans And Other Obesity Related Information System, Chunyue Wang

Theses and Dissertations - UTB/UTPA

Acanthosis nigricans is a cutaneous marker associated with systemic disorders and may serve as an indicator for risk of Type 2 diabetes. Acanthosis nigricans screening can help identify children who have high insulin levels and who may be at-risk for developing Type 2 diabetes. The ANTES system is a computerization attempt for acanthosis nigricans control of the student population from elementary schools and secondary schools in Texas. A general description of the system and the medical and history background of the ANTES program is given. The technology applied to the system is demonstrated. An overview of the system operation status …

The Pan American (2003-11-20), Belinda Reyes

UTPA Archives - The Pan American Newspaper

53rd Year, No. 13

Utb-Tsc Academic Senate Minutes 2003-11-14, University Of Texas At Brownsville And Texas Southmost College. Faculty Senate.

UTB/TSC Faculty Senate Minutes

No abstract provided.

The Collegian (2003-11-10), Sonia Mejia

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 56, No. 12

The Pan American (2003-11-06), Belinda Reyes

UTPA Archives - The Pan American Newspaper

53rd Year, No. 11

The Collegian (2003-11-03), Sonia Mejia

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 56, No. 11

The Effects Of Nationality In The Intercultural Relationship In A Maquila Environment, Cultural Dimensions A Practical Approach, Daniel Martin Reynoso Ortiz

Theses and Dissertations - UTB/UTPA

The Maquiladora Industry has enhanced economic development in the U.S. and Mexico border region. Initially, investors came to set up assembly lines requiring a small amount of technical skill; however, increases in the technological level of products have created the need for companies to require more technical expertise from their staff. Today, the requirement is for the design or redesign of some of their products and the manufacturing processes required to make these products. This brings managerial problems in dealing with technical people in cross cultural environments. These problems deal with staffing issues such as getting the right people and …

The Pan American (2003-10-30), Matt Lynch

UTPA Archives - The Pan American Newspaper

53rd Year, No. 10

Gravitational Radiation From Pulsating White Dwarfs, Matthew Benacquista, M. Benacquista, D. M. Sedrakian, M. V. Hairapetyan, K. M. Shahabasyan, A. A. Sadoyan

Physics & Astronomy Faculty Publications

Rotating white dwarfs undergoing quasi-radial oscillations can emit gravitational radiation in a frequency range from 0.1 to 0.3 Hz. Assuming that the energy source for the gravitational radiation comes from the oblateness of the white dwarf induced by the rotation, the strain amplitude is found to be ∼10-27 for a white dwarf at ∼50 pc. The Galactic population of these sources is estimated to be ∼107 and may produce a confusion-limited foreground for proposed advanced detectors in the frequency band between space-based and ground-based interferometers. Nearby oscillating white dwarfs may provide a clear enough signal to investigate white dwarf interiors …

Using The Intensity Modulation Index To Test Pulsar Radio Emission Models, Fredrick A. Jenet, Janusz Gil

Physics & Astronomy Faculty Publications

This Letter explores the possibility of testing pulsar radio emission models by observing pulse-to-pulse intensity modulation. It is shown that a relationship between a pulsar's period, period derivative, and intensity modulation is a natural consequence of at least one theoretical model of radio pulsar emission. It is proposed that other models may also predict a similar correlation. The exact form of the relationship will depend on the model in question. Hence, observations of intensity modulation should be able to determine the validity of the various emission models. In an attempt to search for the predicted dependencies, the modulation properties of …

The Collegian (2003-10-13), Sonia Mejia

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 56, No. 8

The Pan American (2003-10-02), Matt Lynch

UTPA Archives - The Pan American Newspaper

53rd Year, No. 6

Utpa Stats At A Glance - Fall 2003, University Of Texas-Pan American

UTPA Archives - Stats At A Glance

No abstract provided.

Utpa Commencement – Fall 2003, University Of Texas-Pan American

Edinburg Archives - Legacy Commencement Programs

No abstract provided.

The Pan American (2003-09-25), Matt Lynch

UTPA Archives - The Pan American Newspaper

53rd Year, No. 5

The Collegian (2003-09-22), Sonia Mejia

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 56, No. 5

The Collegian (2003-09-08), Sonia Mejia

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 56, No. 3

The Pan American (2003-08-28), Matt Lynch

UTPA Archives - The Pan American Newspaper

52nd Year, No. 1

Effects Of Co-Teaching On Student Participation And Math Success On Students With Learning Disabilities In The General Education Classroom, Mia Karen Baldwin

Theses and Dissertations - UTB/UTPA

A Numerous research studies have been conducted to determine the effects of inclusion on academics, few of these studies specify the method used. The purpose of this study was to determine whether co-teaching would increase student's participation in the regular math classroom. The study was conducted in a sixth-grade regular education classroom in which students with learning disabilities were included. The co-teaching consisted mostly of interactive teaching between the regular education and the special education teacher. The subjects were students identified with a learning disability in either math calculation or math reasoning. The results indicated that student participation was not …

Orange & White - Summer 2003, University Of Texas At Brownsville, Texas Southmost College

UTB/TSC Archives - Orange & White Magazine

No abstract provided.