Energy Spread of the Unstable State and Proton Decay Observation

Because of the extreme smallness of the energy spread of the unstable state describing the decaying proton, due in its turn to the anomalous smallness of the resonance width expected for the proton decay, the application of the Heisenberg time-energy relation predicts the measurement times for the proton decay observation to be so long as to forbid a "continuous" observation of the decay. This might account for the missing observation of the proton decay

Best Practices in Consent Education: An Analysis

The need for sexual assault prevention work on college campuses is largely accepted; however, higher education and student affairs professionals continue to debate the best way to do this work. In this analysis, I explore sex-neutral, sex-positive, and punitive foci for sexual assault prevention and consent education. After analyzing the effectiveness of each of these foci, I suggest that sexual assault prevention and consent education on college campuses cannot be limited to only reactive strategies. I provide examples of tactics that different functional areas can utilize as well as examples from my own work in student affairs. Expanding the focus of sexual assault prevention and consent education will require student affairs professionals across functional areas to take on more responsibility for this important work. I conclude by advocating for the creation of a specific personnel position to oversee sexual assault prevention and consent on campus

The Space They Take: Evaluating Historically White Fraternities through Critical Race Theory

Fraternities and sororities are not often thought of as the starting points for social justice education, especially not historically White fraternities and sororities. In this paper, I outline the missions and values of a select group of historically White fraternities to better understand the foundation from which they are starting their organization. I give an overview of Critical Race Theory (CRT) that gives context for how critical race theory can work in higher education. I conclude with recommendations for reworking historically White fraternities with a CRT lens; recommendations are written for national organizations and students, and then for professional staff working with fraternities and sororities, especially historically White fraternities

PERANCANGAN APLIKASI DATA KARYAWAN RUMAH SAKIT IBU DAN ANAK BUDHI MULIA KOTA PEKANBARU BERBASIS WEB

Perkembangan ilmu pengetahuan dan teknologi pada saat ini mempunyai peranan yang sangat penting, salah satunya dibidang komputer, banyak instansi pemerintahan ataupun swasta yang sudah menggunakan sistem komputerisasi untuk proses pengolahan data. Metode penelitian yang digunakan adalah dengan melakukan penelitian lapangan berupa wawancara, pengamatan dan studi pustaka untuk memperoleh data dan informasi yang diperlukan dalam penelitian. Tujuan pembahasan ini adalah untuk mengetahui sistem pengolahan data karyawan yang dilakukan oleh Rumah Sakit Budhi Mulia Pekanbaru. Dengan dibuat aplikasi pengolahan data karyawan menggunakan PHP ini diharapkan mampu menyajikan informasi dengan teliti dan akurat serta lebih efisien dibandingkan sistem yang lama. Aplikasi data karyawan pada Rumah Sakit Budhi Mulia Pekanbaru yang akan dirancang untuk mempermudah dalam proses pengolahan data para karyawan terutama data karyawan, data izin karyawan, data cuti karyawan untuk mendapatkan informasi yang lebih cepat dan akurat

On the Shape of Things: From holography to elastica

We explore the question of which shape a manifold is compelled to take when immersed in another one, provided it must be the extremum of some functional. We consider a family of functionals which depend quadratically on the extrinsic curvatures and on projections of the ambient curvatures. These functionals capture a number of physical setups ranging from holography to the study of membranes and elastica. We present a detailed derivation of the equations of motion, known as the shape equations, placing particular emphasis on the issue of gauge freedom in the choice of normal frame. We apply these equations to the particular case of holographic entanglement entropy for higher curvature three dimensional gravity and find new classes of entangling curves. In particular, we discuss the case of New Massive Gravity where we show that non-geodesic entangling curves have always a smaller on-shell value of the entropy functional. Then we apply this formalism to the computation of the entanglement entropy for dual logarithmic CFTs. Nevertheless, the correct value for the entanglement entropy is provided by geodesics. Then, we discuss the importance of these equations in the context of classical elastica and comment on terms that break gauge invariance.Comment: 54 pages, 8 figures. Significantly improved version, accepted for publication in Annals of Physics. New section on logarithmic CFTs. Detailed derivation of the shape equations added in appendix B. Typos corrected, clarifications adde

Spinning probes and helices in AdS3_3

We study extremal curves associated with a functional which is linear in the curve's torsion. The functional in question is known to capture the properties of entanglement entropy for two-dimensional conformal field theories with chiral anomalies and has potential applications in elucidating the equilibrium shape of elastic linear structures. We derive the equations that determine the shape of its extremal curves in general ambient spaces in terms of geometric quantities. We show that the solutions to these shape equations correspond to a three-dimensional version of Mathisson's helical motions for the centers of mass of spinning probes. Thereafter, we focus on the case of maximally symmetric spaces, where solutions correspond to cylindrical helices and find that the Lancret ratio of these equals the relative speed between the Mathisson-Pirani and the Tulczyjew-Dixon observers. Finally, we construct all possible helical motions in three-dimensional manifolds with constant negative curvature. In particular, we discover a rich space of helices in AdS$_3$ which we explore in detail.Comment: 28 pages, 5 figure

Periodic solutions of nearly integrable Hamiltonian systems bifurcating from infinite-dimensional tori

We prove the existence of periodic solutions of some infinite-dimensional nearly integrable Hamiltonian systems, bifurcating from infinite-dimensional tori, by the use of a generalization of the Poincaré–Birkhoff Theorem

The computational complexity of traditional Lattice-Boltzmann methods for incompressible fluids

It is well-known that in fluid dynamics an alternative to customary direct solution methods (based on the discretization of the fluid fields) is provided by so-called \emph{particle simulation methods}. Particle simulation methods rely typically on appropriate \emph{kinetic models} for the fluid equations which permit the evaluation of the fluid fields in terms of suitable expectation values (or \emph{momenta}) of the kinetic distribution function $f(\mathbf{r,v},t),$ being respectively $\mathbf{r}$ and\textbf{\}$\mathbf{v}$ the position an velocity of a test particle with probability density $f(\mathbf{r,v},t)$. These kinetic models can be continuous or discrete in phase space, yielding respectively \emph{continuous} or \emph{discrete kinetic models} for the fluids. However, also particle simulation methods may be biased by an undesirable computational complexity. In particular, a fundamental issue is to estimate the algorithmic complexity of numerical simulations based on traditional LBM's (Lattice-Boltzmann methods; for review see Succi, 2001 \cite{Succi}). These methods, based on a discrete kinetic approach, represent currently an interesting alternative to direct solution methods. Here we intend to prove that for incompressible fluids fluids LBM's may present a high complexity. The goal of the investigation is to present a detailed account of the origin of the various complexity sources appearing in customary LBM's. The result is relevant to establish possible strategies for improving the numerical efficiency of existing numerical methods.Comment: Contributed paper at RGD26 (Kyoto, Japan, July 2008

On the decay law for unstable open systems

We use (nonconservative) dynamical semigroups to investigate the decay law of a quantum unstable system weakly coupled with a large environment. We find that the deviations from the classical exponential law are small and can be safely ignored in any actual experiment.Comment: 12 pages, plain-TeX, to appear in Phys. Lett.