Full O(alpha) Radiative Corrections to High-Energy Compton Scattering

Using computer-algebraic methods we derive compact analytical expressions for the virtual electroweak radiative corrections to polarized Compton scattering. Moreover the helicity amplitudes for double Compton scattering, which prove to be extremely simple in terms of Weyl-van der Waerden spinor products, are presented for massless electrons. The inclusion of a finite electron mass is described, too. Finally numerical results both for the purely photonic and the full O(alpha) electroweak corrections, which turn out to be of the order of 5-10%, are discussed for energies ranging from 10GeV to 2TeV.Comment: 20 pages, LaTex (uuencoded figures appended on tex-file), Bi-TP 93/6

The Maine Annex, vol. 1, no. 2

The Maine Annex, published by the students of the University of Maine at the Brunswick Campus, was launched January 10, 1947. Editors introduced the publication as the product of a group of progressive students attending the Brunswick Campus. The goal of the publication, according to editors, was to tell the story of our life on this campus. The four-page, tabloid-sized paper included display advertising from area businesses. Stories in this issue of The Maine Annex are news items of interest to World War II Veterans, including international news from Europe and tips regarding the filing of federal paperwork to secure veterans benefits

The Maine Annex, vol. 1, no. 3

The Maine Annex, published by the students of the University of Maine at the Brunswick Campus, was launched January 10, 1947. Editors introduced the publication as the product of a group of progressive students attending the Brunswick Campus. The goal of the publication, according to editors, was to tell the story of our life on this campus. The four-page, tabloid-sized paper included display advertising from area businesses. Among front page headlines is: Pres. Hauck Addresses Maine Annex Students. President Hauck States That Education Is Now Recognized As One Of The Prime Factors In Building World Peace

Estratégias Didáticas Interdisciplinares: A construção de Terminais para o Ensino Ecológico e Consciente

Este trabalho relata a integração entre os cursos de Jogos Digitais, Computação, Engenharias, Design e o Núcleo de Inclusão Digital (NID), como forma de ensino interdisciplinar e consciente no uso de tecnologias na educação. Utilizando-se da reciclagem de terminais, buscou-se a criação de estações de jogos digitais desenvolvidos por alunos que farão uso destes conhecimentos em startups ou criação de terminais interativos. O projeto consistiu na reciclagem consciente do lixo eletrônico, remodelagem da parte elétrica e mecânica, oficina de pintura e arte internacional, adaptação do sistema operacional e testes de aceitação do produto desenvolvidos por alunos em disciplinas com foco no ensino e aprendizagem colaborativa

The magnetization of PrFeAsO0.60_{0.60}F$_{0.12} sueprconductor

The magnetization of the PrFeAsO$_{0.60}$F$_{0.12}$ polycrystalline sample has been measured as functions of temperature and magnetic field $(H)$. The observed total magnetization is the sum of a superconducting irreversible magnetization ($M_s$) and a paramagnetic magnetization ($M_p$). Analysis of dc susceptibility $\chi(T)$ in the normal state shows that the paramagnetic component of magnetization comes from the Pr$^{+3}$ magnetic moments. The intragrain critical current density $(J_L)$ derived from the magnetization measurement is large. The $J_L(H)$ curve displays a second peak which shifts towards the high-field region with decreasing temperature. In the low-field region, a plateau up to a field $H^*$ followed by a power law $H^{-5/8}$ behavior of $J_L(H)$ is the characteristic of the strong pinning. A vortex phase diagram for the present superconductor has been obtained from the magnetization and resistivity data.Comment: A revised version with modified title,8 pages, 7 figure

General Relativistic Contributions in Transformation Optics

One potentially realistic specification for devices designed with transformation optics is that they operate with high precision in curved space-time, such as Earth orbit. This raises the question of what, if any, role does space-time curvature play in determining transformation media? Transformation optics has been based on a three-vector representation of Maxwell's equations in flat Minkowski space-time. I discuss a completely covariant, manifestly four-dimensional approach that enables transformations in arbitrary space-times, and demonstrate this approach for stable circular orbits in the spherically symmetric Schwarzschild geometry. Finally, I estimate the magnitude of curvature induced contributions to satellite-borne transformation media in Earth orbit and comment on the level of precision required for metamaterial fabrication before such contributions become important.Comment: 14 pages, 3 figures. Latest version has expanded analysis, corresponds to published versio

The Maine Annex, vol. 1, no. 4

The Maine Annex, published by the students of the University of Maine at the Brunswick Campus, was launched January 10, 1947. Editors introduced the publication as the product of a group of progressive students attending the Brunswick Campus. The goal of the publication, according to editors, was to tell the story of our life on this campus. The four-page, tabloid-sized paper included display advertising from area businesses. Among front-page news was a stage performance by American poet, educator, writer, and Brunswick, Maine native son, Robert Peter Tristram Coffin

The Maine Annex, vol. 1, no. 6

The Maine Annex, published by the students of the University of Maine at the Brunswick Campus, was launched January 10, 1947. Editors introduced the publication as the product of a group of progressive students attending the Brunswick Campus. The goal of the publication, according to editors, was to tell the story of our life on this campus. The four-page, tabloid-sized paper included display advertising from area businesses. Among front-page news are the results of the election of Class Officers and planning for a student Minstrel Show and dance to include black-face performances by University of Maine, Brunswick campus students

The Maine Annex, vol. 1, no. 1

The Maine Annex, published by the students of the University of Maine at the Brunswick Campus, was launched January 10, 1947. Editors introduced the publication as the product of a group of progressive students attending the Brunswick Campus. The goal of the publication, according to editors, was to tell the story of our life on this campus. The four-page, tabloid-sized paper included display advertising from area businesses. Following World War II, the federal G.I. Bill enabled approximately 2.3 million, predominantly white male Veterans to receive a post-secondary education. To accommodate increased enrollment, in 1946 the University of Maine established the Brunswick Campus at the former Brunswick Naval Air Station. The remote campus operated until spring 1949, when Veteran registrations waned. Among stories covered in the first issue of The Maine Annex includes The Fate of Your College Dollar, by Bill Nisbet, which discusses how student tuition and fees were distributed

The Maine Annex, vol. 1, no. 5

The Maine Annex, published by the students of the University of Maine at the Brunswick Campus, was launched January 10, 1947. Editors introduced the publication as the product of a group of progressive students attending the Brunswick Campus. The goal of the publication, according to editors, was to tell the story of our life on this campus. The four-page, tabloid-sized paper included display advertising from area businesses. Among front-page news is coverage of the pending election of class officers