Solution of the Skyrme HF+BCS equation on a 3D mesh. II. A new version of the Ev8 code

We describe a new version of the EV8 code that solves the nuclear Skyrme-Hartree-Fock+BCS problem using a 3-dimensional cartesian mesh. Several new features have been implemented with respect to the earlier version published in 2005. In particular, the numerical accuracy has been improved for a given mesh size by (i) implementing a new solver to determine the Coulomb potential for protons (ii) implementing a more precise method to calculate the derivatives on a mesh that had already been implemented earlier in our beyond-mean-field codes. The code has been made very flexible to enable the use of a large variety of Skyrme energy density functionals that have been introduced in the last years. Finally, the treatment of the constraints that can be introduced in the mean-field equations has been improved. The code Ev8 is today the tool of choice to study the variation of the energy of a nucleus from its ground state to very elongated or triaxial deformations with a well-controlled accuracy.Comment: 24 pages, 3 figure

Shooting the War: The Canadian Army Film Unit in the Second World War

Very little has been written about the Canadian Army Film Unit (CAFU) since the end of the Second World War, despite Jon Farrell’s postulation. There have been a few short newspaper articles related to teh Film Unit and the D-Day footage that made it famous, but there has been no scholarly study by either military or film historians. The purpose of the CAFU was to create an official audio-visual record of Canada’s Army, just as the official historians, war artists, and photographers were documenting other aspects of the war. The Film Unit started as only a few men, but expanded substantially throughout the war, increasing the scope and breadth of its productions. The men and women of the CAFU who operated the cameras, edited the film, and then distributed the finished products were different from the civilian war correspondents and commercial newsreel cameramen who were also creating a visual record of the war. The CAFU attached cameramen to military units and they shot real-time footage of Canadians in battle. This footage was then used to create the CAFU films, and formed the basis of the National Film Board of Canada (NFB) and commercial newsreel company productions. Most of the existing scholarship exploring Canadian film and the Second World War focuses on the NFB and John Grierson, the father of the documentary in Canada and the NFB’s first film commissioner. The historiography suggests that NFB was, for all practical purposes, the main film institution creating Canadian motion pictures. This was true, but much of its wartime film footage came from the cameras of the CAFU—footage that was shot in harm’s way. Despite this neglect by historians, the CAFU played an essential role in the history of Canadian film. Much of what subsequent generations have seen or know about the Second World War comes from footage shot by the Film Unit. Yet it is a difficult story to tell since it must be pieced together using primary sources, both textual and audio-visual. The Film Unit will receive the credit that it deserves and will find its place again in the history of the Second World War

The Solvation Energy of Ions in a Stockmayer Fluid

The solvation of ions in polar solvents has been a long studied system since the early twentieth century. A common technique to calculate the energy associated with ion solvation is the Born Solvation energy equation. This equation assumes an ion is placed in an incompressible, homogeneous dielectric, which is not necessarily representative of a real system. In this work the Stockmayer Fluid Model is used in a molecular dynamics simulation through the software LAMMPS to check the quantitative correctness of the Born equation. It is also shown how solvation energies of ions placed in polymerized and non-polymerized solvents differ. It is shown that solvation energies in non-polymerized solvents are less negative than the predicted Born Solvation energy due to dielectric saturation effects, but are qualitatively similar. Solvation energies of polymerized solvents differ greatly from non-polymerized solvents and the predicted Born Solvation Energy. The reason for this is speculated to be due to compressibility of the solvents or structural and dipolar effects from polymer chains. It is also shown that the Stockmayer Fluid Model can be used to accurately predict experimental results for non-polymeric solvents

Enhancement of Vibronic and Ground-State Vibrational Coherences in 2D Spectra of Photosynthetic Complexes

A vibronic-exciton model is applied to investigate the mechanism of enhancement of coherent oscillations due to mixing of electronic and nuclear degrees of freedom recently proposed as the origin of the long-lived oscillations in 2D spectra of the FMO complex [Christensson et al. J. Phys. Chem. B 116 (2012) 7449]. We reduce the problem to a model BChl dimer to elucidate the role of resonance coupling, site energies, nuclear mode and energy disorder in the enhancement of vibronic-exciton and ground-state vibrational coherences, and to identify regimes where this enhancement is significant. For a heterodimer representing the two coupled BChls 3 and 4 of the FMO complex, the initial amplitude of the vibronic-exciton and vibrational coherences are enhanced by up to 15 and 5 times, respectively, compared to the vibrational coherences in the isolated monomer. This maximum initial amplitude enhancement occurs when there is a resonance between the electronic energy gap and the frequency of the vibrational mode. The bandwidth of this enhancement is about 100 cm-1 for both mechanisms. The excitonic mixing of electronic and vibrational DOF leads to additional dephasing relative to the vibrational coherences. We evaluate the dephasing dynamics by solving the quantum master equation in Markovian approximation and observe a strong dependence of the life-time enhancement on the mode frequency. Long-lived vibronic-exciton coherences are found to be generated only when the frequency of the mode is in the vicinity of the electronic resonance. Although the vibronic-exciton coherences exhibit a larger initial amplitude compared to the ground-state vibrational coherences, we conclude that both type have a similar magnitude at long time for the present model. The ability to distinguish between vibronic-exciton and ground-state vibrational coherences in the general case of molecular aggregate is discussed.Comment: 16 pages, 6 figure

Special Libraries, October 1934

Volume 25, Issue 8https://scholarworks.sjsu.edu/sla_sl_1934/1007/thumbnail.jp

Journal of Mormon History Vol. 4, 1977

--The Secular Smiths Paul M. Edwards, 3 --Brigham Himself: An Autobiographical Recollection Ronald W. Walker and Ronald K. Esplin, 19 --Early Mormon Pamphleteering David J. Whittaker, 35 --The Religious Backgrounds of Mormon Converts in Britain, 1837-52 Malcolm R. Thorp, 51 --Frederick Madison Smith: The Formative Years of an RLDS President Larry E. Hunt, 67 --Mormon Influence on the Unionization of Eastern Utah Coal Miners, 1903-33 Allan Kent Powell, 91 --Mormon Polygamy: A Review Article Davis Bitton, 10

Anelastic Versus Fully Compressible Turbulent Rayleigh-B\'enard Convection

Numerical simulations of turbulent Rayleigh-B\'enard convection in an ideal gas, using either the anelastic approximation or the fully compressible equations, are compared. Theoretically, the anelastic approximation is expected to hold in weakly superadiabatic systems with $\epsilon = \Delta T / T_r \ll 1$, where $\Delta T$ denotes the superadiabatic temperature drop over the convective layer and $T_r$ the bottom temperature. Using direct numerical simulations, a systematic comparison of anelastic and fully compressible convection is carried out. With decreasing superadiabaticity $\epsilon$, the fully compressible results are found to converge linearly to the anelastic solution with larger density contrasts generally improving the match. We conclude that in many solar and planetary applications, where the superadiabaticity is expected to be vanishingly small, results obtained with the anelastic approximation are in fact more accurate than fully compressible computations, which typically fail to reach small $\epsilon$ for numerical reasons. On the other hand, if the astrophysical system studied contains $\epsilon\sim O(1)$ regions, such as the solar photosphere, fully compressible simulations have the advantage of capturing the full physics. Interestingly, even in weakly superadiabatic regions, like the bulk of the solar convection zone, the errors introduced by using artificially large values for $\epsilon$ for efficiency reasons remain moderate. If quantitative errors of the order of $10\%$ are acceptable in such low $\epsilon$ regions, our work suggests that fully compressible simulations can indeed be computationally more efficient than their anelastic counterparts.Comment: 24 pages, 9 figure

The Glitch Aesthetic

The miscommunication between sender and receiver during transcoding indexes specific historical moments similarly to analog film\u27s indexical trace. Iconography and glitch art begin to establish glitch\u27s deictic index. The glitch aesthetic exposes societal paranoia by illustrating dependence on the digital and fear of system failure. With the advent of video sharing sites like Youtube and popular cyberfilms, the glitch aesthetic has evolved into a pop culture artifact

Design of graduate program home page for the School of Food, Hotel and Travel Management

The graduate program home page was designed for two target markets: potential graduate students and potential employers for our graduate students. To attract more students enrolling in the School of Food, Hotel and Travel Management (FHTM) at RIT and increase the graduate students recruited opportunity by outside company, it is necessary to let those two groups know what the school is doing and what students are learning during the academic years by simply viewing the web pages. The graduate page design was emphasized on the functions of frames and hyperlinks because the frames are getting popular on the Internet. Further, most people are using Netscape browser instead of Mosaic because the Netscape 2.0 browser supports frames functions and the Netscape 3.0 browser offers more functions to support the frames such as the frames information, print whole screen, and frame source. The Netscape 2.01 browser was applied to view the graduate page while it was developing. There are three frames in the graduate page. The top frame is linked to the pages under the graduate program. The left frame is designed to link to other pages outside the graduate program, such as school\u27s homepage, faculty page, admission office, and other hospitality schools. The target frame is the primary part where all information is shown when the graduate program links to other pages. The first view page describes the importance of hospitality program when people visit the graduate program page. Then they can be brought into the pages of three main graduate programs of FHTM by clicking the icons in the top frame. Inside those pages, program descriptions, course lists and descriptions are offers. Furthermore, people can still access the home page of FHTM and even apply for admission on line by using the icons or texts in the left frame. Besides, the home pages of several schools who have the relative department are linked such as the Cornell University, Virginia Tech, George Washington University. Recently, the animation on the Internet is so hot that almost every home page has animation images. They bring people from plain images into the active images and make the pages more readable. Users won\u27t feel bored while they are accessing data. Thus, it is strongly recommended to put some animation images or icons on the home page