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Magneto-Optical Effects And Precision Measurement Physics: Accessing The Magnetic Faraday Effect Of Polarized 3He With A Triple Modulation Technique, Gretchen Phelps

Theses and Dissertations--Physics and Astronomy

This work is comprised of the study of two magneto-optical phenomena: the Kerr effect and the Faraday effect. Neutron physics experiments often utilize polarized neutrons, and one method to generate or guide polarized neutrons involves the use of a system of magnetic super-mirrors. Experience shows that the magnetization of the super-mirror may decay with time; therefore, we implemented the surface magneto-optical Kerr effect (SMOKE) to study the temporal behavior of the magnetization of a magnetized remnant super-mirror sample, where a sensitivity of 0.1 mrad was obtained. Unique to our set-up was the method in which the various magnetization directions were …

The Dijet Cross Section Measurement In Proton-Proton Collisions At A Center Of Mass Energy Of 500 Gev At Star, Grant D. Webb

Theses and Dissertations--Physics and Astronomy

Polarized deep inelastic scattering experiments play a vital role in the exploration of the spin structure of the proton. The polarized proton-proton collider at RHIC provides direct access to the gluon spin distribution through longitudinal double spin asymmetry measurements of inclusive jets, pions, and dijets. This thesis presents the measurement of the dijet double differential cross-section in proton-proton collisions at center of mass energies of √s = 500 GeV. The data represent an integrated luminosity of 8.7 pb^-1 recorded by the STAR detector during the 2009 RHIC run. A comprehensive jet analysis was performed to determine the ideal …

Time Dependent Holography, Diptarka Das

Theses and Dissertations--Physics and Astronomy

One of the most important results emerging from string theory is the gauge gravity duality (AdS/CFT correspondence) which tells us that certain problems in particular gravitational backgrounds can be exactly mapped to a particular dual gauge theory a quantum theory very similar to the one explaining the interactions between fundamental subatomic particles. The chief merit of the duality is that a difficult problem in one theory can be mapped to a simpler and solvable problem in the other theory. The duality can be used both ways.

Most of the current theoretical framework is suited to study equilibrium systems, or …

Nuclear Structure Relevant To Double-Beta Decay: Studies Of ⁷⁶Ge And ⁷⁶Se Using Inelastic Neutron Scattering, Benjamin P. Crider

Theses and Dissertations--Physics and Astronomy

While neutrino oscillations indicate that neutrino flavors mix and that neutrinos have mass, they do not supply information on the absolute mass scale of the three flavors of neutrinos. Currently, the only viable way to determine this mass scale is through the observation of the theoretically predicted process of neutrinoless double-beta decay (0νββ). This yet-to-be-observed decay process is speculated to occur in a handful of nuclei and has predicted half-lives greater than 10²⁵ years. Observation of 0νββ is the goal of several large-scale, multinational efforts and consists of detecting a sharp peak in the summed β energies at the Q-value …

A New Set Of Spectroscopic Metallicity Calibrations For Rr Lyrae Variable Stars, Eckhart Spalding

Theses and Dissertations--Physics and Astronomy

RR Lyrae stars are old, iron-poor, Helium-burning variable stars. RR Lyraes are extremely useful for tracing phase-space structures and metallicities within the galaxy because they are easy to identify, have consistent luminosities, and are found in large numbers in the galactic disk, bulge, and halo. Here we present a new set of spectroscopic metallicity calibrations that use the equivalent widths of the Ca II K, Hγ, and Hδ lines to calculate metallicity values. Applied to spectroscopic survey data, these calibrations will help shed light on the evolution of the Milky Way and other galaxies.

A Study Of Periodic And Aperiodic Ferromagnetic Antidot Lattices, Vinayak S. Bhat

Theses and Dissertations--Physics and Astronomy

This thesis reports our study of the effect of domain wall pinning by ferromagnetic (FM) metamaterials [1] in the form of periodic antidot lattices (ADL) on spin wave spectra in the reversible regime. This study was then extended to artificial quasicrystals in the form of Penrose P2 tilings (P2T). Our DC magnetization study of these metamaterials showed reproducible and temperature dependent knee anomalies in the hysteretic regime that are due to the isolated switching of the FM segments. Our dumbbell model analysis [2] of simulated magnetization maps indicates that FM switching in P2T is nonstochastic. We have also acquired …

Analysis Of Herbicide Treatment Effectiveness On Common Reed (Phragmites Australis) Of Delaware Bay Salt Marshes, Laura Rosa Ruggeri

Theses, Dissertations and Culminating Projects

Management of Phragmites australis (Cav.) Trin. ex Steud., or common reed, an invasive species within the Delaware Bay, U.S. has been ongoing since 1994 as part of the Estuary Enhancement Program (EEP) for Public Service Enterprise Group (PSEG). Phragmites is known to alter the habitat by creating a monoculture, increasing sediment trapping, and decreasing water circulation resulting in decreased biodiversity. Herbicide treatment at EEP Phragmites-dominated sites began as a means to mitigate for loss of nekton species resulting from operations of the Hope Creek-Salem Generating Station once-through cooling system. Using ArcGIS, effectiveness of herbicide treatment was compared at two of …

Front Matter, North American Bird Bander

North American Bird Bander

No abstract provided.

Front Matter, North American Bird Bander

North American Bird Bander

No abstract provided.

Back Matter, North American Bird Bander

North American Bird Bander

No abstract provided.

The Composition And Stability Of The Vaginal Microbiota Of Normal Pregnant Women Is Different From That Of Non-Pregnant Women, Roberto Romero, Sonia S. Hassan, Pawel Gajer, Adi L. Tarca, Douglas W. Fadrosh, Lorraine Nikita, Marisa Galuppi, Ronald F. Lamont, Piya Chaemsaithong, Jezid Miranda, Tinnakorn Chaiworapongsa, Jacques Ravel

Wayne State University Associated BioMed Central Scholarship

Abstract

Background

This study was undertaken to characterize the vaginal microbiota throughout normal human pregnancy using sequence-based techniques. We compared the vaginal microbial composition of non-pregnant patients with a group of pregnant women who delivered at term.

Results

A retrospective case–control longitudinal study was designed and included non-pregnant women (n = 32) and pregnant women who delivered at term (38 to 42 weeks) without complications (n = 22). Serial samples of vaginal fluid were collected from both non-pregnant and pregnant patients. A 16S rRNA gene sequence-based survey was conducted using pyrosequencing to characterize the structure and stability of the vaginal …

Examination Of The Potential Association Of Stress With Morbidity And Mortality Outcomes In Patient With Heart Failure, Abdullah S. Alhurani, Rebecca Dekker, Elizabeth Tovar, Alison Bailey, Terry A. Lennie, David C. Randall, Debra K. Moser

Nursing Faculty Publications

OBJECTIVES: The high mortality and morbidity rates associated with heart failure are still not well explained. A few psychosocial factors have been studied and explain some of this risk, but other factors, like stress, remain largely unexplored in heart failure. This study aimed to (1) examine the association of stress with 6-month cardiac event-free survival, (2) examine the relationship of stress with salivary cortisol, and (3) examine the association of salivary cortisol level with 6-month cardiac event-free survival.

METHOD: A total of 81 heart failure patients participated. Stress was measured using the brief Perceived Stress Scale. Cortisol was …

Front Matter, North American Bird Bander

North American Bird Bander

No abstract provided.

Back Matter, North American Bird Bander

North American Bird Bander

No abstract provided.

Front Matter, North American Bird Bander

North American Bird Bander

No abstract provided.

Back Matter, North American Bird Bander

North American Bird Bander

No abstract provided.

Dissertation Experiences Of Doctoral Graduates From Professional Psychology Programs, Alan W. Burkard, Sarah Knox, Shauna Elizabeth Fuller, Clara E. Hill, Lewis Z. Schlosser

College of Education Faculty Research and Publications

Worldwide, dissertation experiences are acknowledged to be challenging endeavors for students and the faculty members who advise them, and dissertation completion continues to be a concern when seeking to improve overall doctoral graduation rates. Although a number of factors have been associated with completion rates across disciplines, further research is needed within professional psychology graduate programs to understand overall student dissertation experiences. In this USA-based investigation, a mixed-method design was used to examine the experiences of 25 professional psychology doctoral graduates’ dissertation experiences, 12 of which were self-identified as positive and 13 as negative. Participants with positive experiences typically had …

Home-Based Parent-Child Therapy In Low-Income African American, Caucasian, And Latino Families: A Comparative Examination Of Treatment Outcomes, Brittany L. Gresl, Robert A. Fox, Alicia Fleischmann

College of Education Faculty Research and Publications

This study examined parent and child treatment outcomes for a home-based Parent-Child Therapy (PCT) program for 66 children from families living in poverty. African American, Caucasian, and Latino families were examined to determine if an evidence-based program would produce similar results across different ethnic groups. The results showed that caregivers across the three ethnic groups reported improved child challenging behavior, increased positive parent-child interactions, improved parental expectations, higher levels of nurturing, and less reliance on verbal and corporal punishment as a form of discipline. Practical implications for these results are discussed.

Choosing To Be Involved, Alan W. Burkard

College of Education Faculty Research and Publications

No abstract provided.

The Role Of Behavioral And Cognitive Cultural Orientation On Mexican American College Students’ Life Satisfaction, Lizette Ojeda, Lisa M. Edwards, Erin E. Harding, Brandy Piña-Watson

College of Education Faculty Research and Publications

We examined the role of behavioral (acculturation and enculturation) and cognitive cultural orientation (independent and interdependent self-construal) on Mexican American college students’ life satisfaction. Analyses explained 28% of the variance in life satisfaction, with social class, grade point average, and independent self-construal being unique predictors. Furthermore, enculturation was associated with increasing life satisfaction among those low in interdependent self-construal, whereas acculturation was associated with decreasing life satisfaction among those high in independent self-construal. Implications and directions for future research are discussed.

Resilience To Discrimination Stress Across Ethnic Identity Stages Of Development, Andrea J. Romero, Lisa M. Edwards, Stephanie A. Fryberg, Michele Orduña

College of Education Faculty Research and Publications

Ethnic identity development may increase resilience to discrimination and prejudice, which are often common and stressful for ethnic minority adolescents. Based on ethnic identity development theory and resilience theory, we hypothesize that under high discrimination stress, ethnic affirmation and ethnic identity stage will have protective moderating effects on self-esteem and depressive symptoms. A cross-sectional self-report study with 125 ethnic minority adolescents (13–18 years) found that ethnic affirmation (p < .05) had protective effects on depressive symptoms (p < .05) and protective-enhancing effects on self-esteem at high levels of discrimination stress. Achieved ethnic identity stage (p < .05) had protective-stabilizing effects on self-esteem at high discrimination stress. Our findings demonstrate that the protective elements of ethnic identity are feeling positive about one's ethnic group, having learned about one's history, and having resolved conflicts about one's ethnic group.

Treatment Outcomes For At-Risk Young Children With Behavior Problems: Toward A New Definition Of Success, Michael P. Fung, Robert A. Fox, Sara E. Harris

College of Education Faculty Research and Publications

This study examined the outcomes of Early Pathways (EP), an in-home parent–child therapy program with 447 at-risk children younger than 5 years of age who were referred for severe behavior and emotional problems, such as aggression, oppositional behavior, and separation anxiety. EP emphasized parent-directed training of child behavior strategies including psychoeducation regarding child development, child-led play, and cognitive-behavioral techniques. Outcomes were assessed using a unique 2-dimensional definition of treatment completion, which consisted of treatment duration and an assessment of reliable change for the primary outcome measure of child behavior problems. Results showed that the majority of children (63.4%) met or …

The Importance Of Academic Deans' Interpersonal/Negotiating Skills As Leaders, Shelley B. Wepner, Bill Henk, Virginia Clark Johnson, Sharon Lovell

College of Education Faculty Research and Publications

Four academic deans investigated when and how they used interpersonal/negotiating skills to function effectively in their positions. For two full weeks, the deans coded their on-the-job interactions during scheduled meetings, informal meetings, spontaneous encounters/meetings, telephone calls, and select email. Analyses revealed that the interpersonal/negotiating skills used, from most to least prevalent, were: working closely with others, being responsive to key persons, negotiating key players' roles, and keeping key persons in the organisation informed. Across these engagements, the deans interacted with 35 different categories of stakeholders inside and outside their institutions for 32 different purposes. Given the nature and range of …

What’S It All About? A Qualitative Study Of Meaning In Life For Counseling Psychology Doctoral Students, Clara E. Hill, Kathryn Kline, Viviana Bauman, Torrian Brent, Catherine Breslin, Marilyn Calderon, Cecilia Campos, Stephanie Goncalves, Danielle Goss, Toby Hamovitz, Patty Kuo, Noah Robinson, Sarah Knox

College of Education Faculty Research and Publications

The interviews of 10 female counseling psychology doctoral students regarding their views about meaning in life (MIL) were analyzed using consensual qualitative research. The participants defined MIL as goals or purposes, were actively involved in searching for meaning, and believed that MIL had been stimulated by life-changing experiences and culture. On a personal level, they gained meaning from relationships, personal growth, and religion/spirituality. On a professional level, they gained meaning from providing therapy, conducting research, and teaching. As therapists, participants approached MIL indirectly by asking about client goals/motivations or by focusing on other clinical problems that if resolved would enhance …

Qualitative Research Interviews: An Update, Alan W. Burkard, Sarah Knox

College of Education Faculty Research and Publications

No abstract provided.

A Qualitative Study Of Supervisees’ Internal Representations Of Supervisors, Sarah Knox, William Caperton, David Phelps, Nate Pruitt

College of Education Faculty Research and Publications

Eleven US-based doctoral student supervisees were interviewed regarding their internal representations (IRs) of their clinical supervisors. Data were analyzed using consensual qualitative research. In speaking about their overall IR experiences, supervisees reported that their exposure to IRs occurred at off-site practicum placements. The IRs, which were both spontaneous and intentionally invoked, usually were auditory in form, were stimulated by supervisees’ clinical work, were used to guide their clinical performance, and were considered a normal part of their development. When describing one specific IR, supervisees characterized the relationship with the supervisor as positive, and noted that supervision focused on clinical interventions. …

Rule Of Law, Standards Of Law, Discretion And Transparency, Eleanor M. Fox

SMU Law Review

No abstract provided.

Humor Works In Funny Ways: Examining Satirical Tone As A Key Determinant In Political Humor Message Processing, Heather L. Lamarre, Kristen D. Landreville, Dannagal Young, Nathan Gilkerson

College of Communication Faculty Research and Publications

This multi-experiment study builds upon extant political entertainment theory, testing whether satire type (horatian versus juvenalian) cues varying processing mechanisms (message discounting versus resource allocation), and if consequential differences to argument scrutiny levels or message persuasiveness result. Using novel stimuli (e.g., animated cartoons, study one) and real-world late-night political satire (The Daily Show and The Colbert Report, study two), results suggest that satire type was a key antecedent in political humor message processing. Additionally, the varying mechanisms had differential effects on political argument scrutiny levels and message persuasiveness.

Finding The Lost Involuntary Public Figure, Jeffrey Omar Usman

Law Faculty Scholarship

This Article begins in Part I through observation of the beginning and development of the Supreme Court’s jurisprudence on the constitutional limitations imposed upon defamation actions under the First Amendment to the United States Constitution. Part II of the Article then briefly sets forth the constitutional framework that the Supreme Court imposed in 1974 on defamation actions in Gertz v. Robert Welch, Inc. The Article then addresses in Part III how the pressures of the First Amendment have eroded the structure that Gertz built. In doing so, Part III specifically explores the expanding definition of who constitutes a public official …

A Century Of Self-Expression: Modern American Art In The Collection Of John And Joanne Payson, Students Of Exhibiting Modern Art 360 2013-2014, Laurette Mccarthy, John Payson, Joanne Payson, Brian Wallace

Books, pamphlets, catalogues, and scrapbooks

A catalogue of the exhibition held at Bryn Mawr College February 28-June 1, 2014.