The thermal phase curve offset on tidally- and non-tidally-locked exoplanets: A shallow water model

Using a shallow water model with time-dependent forcing we show that the peak of an exoplanet thermal phase curve is, in general, offset from secondary eclipse when the planet is rotating. That is, the planetary hot-spot is offset from the point of maximal heating (the substellar point) and may lead or lag the forcing; the extent and sign of the offset is a function of both the rotation rate and orbital period of the planet. We also find that the system reaches a steady-state in the reference frame of the moving forcing. The model is an extension of the well studied Matsuno-Gill model into a full spherical geometry and with a planetary-scale translating forcing representing the insolation received on an exoplanet from a host star. The speed of the gravity waves in the model is shown to be a key metric in evaluating the phase curve offset. If the velocity of the substellar point (relative to the planet's surface) exceeds that of the gravity waves then the hotspot will lag the substellar point, as might be expected by consideration of forced gravity wave dynamics. However, when the substellar point is moving slower than the internal wavespeed of the system the hottest point can lead the passage of the forcing. We provide an interpretation of this result by consideration of the Rossby and Kelvin wave dynamics as well as, in the very slowly rotating case, a one-dimensional model that yields an analytic solution. Finally, we consider the inverse problem of constraining planetary rotation rate from an observed phase curve

Studies on Ciliates from Mollusks of Iowa

The ciliates which live a commensal life on the gills and in the mantle cavities of mollusks include several species of peritrichs, but most of them belong to a suborder of holotrichs called Thigmotricha (Chatton and Lwoff, 1922). Very little work has been done on the geographical distribution and host-specificity of the ciliates of mollusks. Emphasis has been placed rather upon the taxonomic and morphological features

Shoulder pain in terminally ill? Think of suprascapular nerve entrapment!

Many terminally ill patients suffer because of poorly controlled musculoskeletal pain. Oral and parenteral systemic analgesics are usually ineffective in this type of pain. It is therefore important to diagnose and treat accordingly. Patients with shoulder pain may suffer from suprascapular nerve entrapment, a syndrome known from sport and occupational medicine. Within, we describe this syndrome, mechanism of onset, diagnosis and treatment. Simple injection of local anaesthetics and corticosteroids may have an effect for several weeks.Many terminally ill patients suffer because of poorly controlled musculoskeletal pain. Oral and parenteral systemic analgesics are usually ineffective in this type of pain. It is therefore important to diagnose and treat accordingly. Patients with shoulder pain may suffer from suprascapular nerve entrapment, a syndrome known from sport and occupational medicine. Within, we describe this syndrome, mechanism of onset, diagnosis and treatment. Simple injection of local anaesthetics and corticosteroids may have an effect for several weeks

The efficacy of sanctuary areas for the management of fish stocks and biodiversity in WA waters

Debate concerning the relative benefits of marine protected areas (MPAs) for the management of marine resources can often reflect unrecognized differences in the scope, scale and definitions of the objectives being sought by various Government or community bodies. There can also be different opinions on the level of protection required for an area to be considered an ‘MPA’ and functional definitions for both the biological diversity and ecosystems within these areas are often lacking. This paper seeks to outline the relative efficiency and effectiveness of MPAs, especially no-take sanctuary areas, compared to other strategies currently employed to help achieve the main objective of the Western Australian (WA) Fish Resources Management Act (FRMA) 1994, which is “to conserve fish* and protect their environment”. This objective covers the conservation of most of the marine resources of the WA coast, including fish stock management; habitat protection and biodiversity generally out to the 200 m depth contour

The Perceptions and Experiences of Human Resources Recruiters Regarding Linkedin as an Online Personal Branding Representation of Recent Business Graduates

This study aimed to explore the perceptions and experiences of Human Resource Recruiters regarding LinkedIn as an online personal branding representation of recent business program graduates by using a phenomenological approach. The population of interest comprises Human Resource Recruiters that use LinkedIn and hire recent business graduates.The recordings and or transcripts of the interviews were utilized to conduct an interpretative phenomenological analysis to identify broader themes across the data set. The identified themes follow the same order as the questions conducted during the sessions. The five themes that emerged are (1) Social platforms utilized by HR recruiters, (2) HR recruiters\u27 experiences of using LinkedIn in recruiting recent business graduates, (3) The LinkedIn profile and personal branding, (4) LinkedIn impression management behaviors observed by HR recruiters as best practices by job candidates, and (5) HR recruiters recommendations for managing their profile to communicate a solid personal brand

A parameterized-background data-weak approach to variational data assimilation: formulation, analysis, and application to acoustics

We present a parameterized-background data-weak (PBDW) formulation of the variational data assimilation (state estimation) problem for systems modeled by partial differential equations. The main contributions are a constrained optimization weak framework informed by the notion of experimentally observable spaces; a priori and a posteriori error estimates for the field and associated linear-functional outputs; weak greedy construction of prior (background) spaces associated with an underlying potentially high-dimensional parametric manifold; stability-informed choice of observation functionals and related sensor locations; and finally, output prediction from the optimality saddle in O(M[superscript 3) operations, where M is the number of experimental observations. We present results for a synthetic Helmholtz acoustics model problem to illustrate the elements of the methodology and confirm the numerical properties suggested by the theory. To conclude, we consider a physical raised-box acoustic resonator chamber: we integrate the PBDW methodology and a Robotic Observation Platform to achieve real-time in situ state estimation of the time-harmonic pressure field; we demonstrate the considerable improvement in prediction provided by the integration of a best-knowledge model and experimental observations; we extract, even from these results with real data, the numerical trends indicated by the theoretical convergence and stability analyses.Fondation Sciences Mathematiques de ParisUnited States. Air Force Office of Scientific Research. Multidisciplinary University Research Initiative (Grant FA9550-09-1-0613)United States. Office of Naval Research (Grant N00014-11-1-0713)SUTD-MIT International Design Centr

Electron g-2 in Light-Front Quantization

Basis Light-front Quantization has been proposed as a nonperturbative framework for solving quantum field theory. We apply this approach to Quantum Electrodynamics and explicitly solve for the light-front wave function of a physical electron. Based on the resulting light-front wave function, we evaluate the electron anomalous magnetic moment. Nonperturbative mass renormalization is performed. Upon extrapolation to the infinite basis limit our numerical results agree with the Schwinger result obtained in perturbation theory to an accuracy of 0.06%.Comment: 6 pages, 4 figure