Uniform Acceleration Radiation

Radiation of a uniformly accelerating source is an enduring problem in the physics literature that gives rise to multiple apparent paradoxes. Also in the literature there exist several notions for defining radiation. Here we focus on exploring the Poynting flux radiation, which is defined with respect to an observer’s proper timelike Killing vector, of a source in a massless scalar field. We fill in details regarding the vanishing divergence condition of the stress tensor and verify explicitly that the divergence vanishes on the past horizon. Using a convenient set of coordinates, we plot vector fields of the Minkowski Poynting vector flux to gain insight into the flow of energy of the system. We then address implications to the equivalence principle paradox for uniformly accelerating sources, and argue that the qualitative equivalence principle provides the correct argument to ‘save’ the equivalence principle for scalar electrodynamics. We also provide a criterion, which would quantitatively verify this, if proven

Working Definitions Council of Deans

The underpinnings of what it means for higher education to support diversity, equity and inclusion is often problematized by different interpretations of key terms necessary to work systematically. Inspired by efforts in both the office of Diversity, Equity and Inclusion and Academic Affairs, we will use the following working definitions in its efforts to increase awareness, understanding and collective action as we work toward our vision and mission

Modeling of Corrugated Graphite Foam Heat Exchangers

A new manufacturing process was recently developed by the Oak Ridge National Laboratory for the production of graphite foam. The high thermal conductivity and heat transfer area of the foam make it desirable for thermal management applications such as compact heat exchangers. The heat transfer capabilities of the foam are especially useful in internal forced convection applications. However, due to the very low permeability of graphite foam, pressure-drop is very high compared to other porous media, and pressuredrop reduction schemes are necessary to ensure its practical application. Pressure-drop reduction can be achieved through the strategic machining of graphite foam into complex geometries. In this study, a corrugated configuration is analyzed. Computational methods are employed to determine optimal geometric parameters of corrugated graphite foam heat exchangers that result in a significant reduction in pressure-drop without severely affecting heat transfer performance. The results indicate that pressure-drop in optimal corrugated configurations is reduced by nearly two orders of magnitude when compared to a full graphite foam block of the same overall size. These optimal cases are characterized by relatively uniform flow in the transverse direction across the foam, and this uniformity is reduced by slot widths that are too long and narrow and by flowrates that are too high. These optimal configurations decrease the heat transfer coefficients by nearly fifty percent when compared to a full block, but the reduction of pressure-drop is much more significant. Therefore, corrugating the foam is shown to be an effective method to significantly reduce the pressure-drop without severely affecting the heat transfer performance of graphite foam heat exchangers

Happiness is Service in the Spirit of Vincent de Paul and Frederic Ozanam a Youth Ministry Catechesis for Service Learning Formation

The Capstone Project and subsequent writings incorporated in this portfolio, referred to as Phase II, is a cumulative and collaborative effort between two colleagues from The Pastoral Institute of The University of the Incarnate Word, San Antonio, Texas. The first phase was successfully completed to fulfill requirements for a Master of Arts in Religious Studies. Phase I was intended to: plan, implement and evaluate a catechesis pilot program for a senior high school CCD class. This pilot was to have its foundation in the Gospel readings of the liturgical calendar. More importantly, this program was designed to afford youth and young adults enrolled in this catechesis curriculum, an opportunity to put their faith in action through active participation in service learning projects. A mini-session (encompassing a three to four week period of time) approach is utilized in the structuring of this catechesis plan. The cycle consisted of: Week I - Gospel readings; interpretation, open discussion on content, modem practical example of message; Week II - Service Learning Project; based on the message of the Gospel readings, and Week III - Evaluation; both oral and written, which serves to examine the practicality of the mini-session as well as the success and/or failure of the service learning project. This first phase has been completed and was proven successful, as a pilot program. The second phase of the total Capstone Project is to: plan, implement and evaluate results utilizing this same catechesis curriculum on an individual or small group setting. This CCD curriculum has proven successful with an entire class of students within a CCD setting. Now the test is to attempt utilization of this same program on an individual and/or family basis. The original work will continue to be edited and modified as deemed necessary in order to adapt for individual or small group design. The completion of this portion, Phase II, of this Capstone Project is also submitted to fulfill degree requirements for a Master of Arts in Religious Studies

Uniform Acceleration Radiation

Radiation of a uniformly accelerating source is an enduring problem in the physics literature that gives rise to multiple apparent paradoxes. Also in the literature there exist several notions for defining radiation. Here we focus on exploring the Poynting flux radiation, which is defined with respect to an observer’s proper timelike Killing vector, of a source in a massless scalar field. We fill in details regarding the vanishing divergence condition of the stress tensor and verify explicitly that the divergence vanishes on the past horizon. Using a convenient set of coordinates, we plot vector fields of the Minkowski Poynting vector flux to gain insight into the flow of energy of the system. We then address implications to the equivalence principle paradox for uniformly accelerating sources, and argue that the qualitative equivalence principle provides the correct argument to ‘save’ the equivalence principle for scalar electrodynamics. We also provide a criterion, which would quantitatively verify this, if proven