An analysis of the time and activity of two pediatric head nurses at Boston Floating Hospital.

Thesis (M.S.)--Boston Universit

A numerical model of MHD waves

This paper is primarily concerned with a numerical model of MHD waves. While a hyperbolic system of wave equations admits a shock solution the MHD equations are not strictly hyperbolic. As a consequence of that these equations require special numerical treatment. An application of a resulting numerical code to a problem of wave propagation in a coronal loop is presented

FLASH - a tool for surgery of solar plasma

The universe has always been object of our fascination. Because the Sun is our nearest star naturally a long time ago it became an object of our extensive observations. Nowadays, investigations of the Sun are carried by means of observations and theoretical modeling. Unfortunately, due to their intrinsic complexity most of theoretical models cannot be solved analytically. As a consequence, we adopt FLASH which is a modular parallel computation, adaptive mesh refinement, hierarchical data format code capable of solving magnetohydrodynamic equations. In this paper the FLASH code is applied to simulate oscillations in coronal loops

Identification of different types of kink modes in coronal loops: principles and application to TRACE results

We explore the possible observational signatures of different types of kink modes (horizontal and vertical oscillations in their fundamental mode and second harmonic) that may arise in coronal loops, with the aim of determining how well the individual modes can be uniquely identified from time series of images. A simple, purely geometrical model is constructed to describe the different types of kink-mode oscillations. These are then `observed' from a given direction. In particular, we employ the 3D geometrical parameters of 14 TRACE loops of transverse oscillations to try to identify the correct observed wave mode. We find that for many combinations of viewing and loop geometry it is not straightforward to distinguish between at least two types of kink modes just using time series of images. We also considered Doppler signatures and find that these can help obtain unique identifications of the oscillation modes when employed in combination with imaging. We then compare the modeled spatial signatures with the observations of 14 TRACE loops. We find that out of three oscillations previously identified as fundamental horizontal mode oscillations, two cases appear to be fundamental vertical mode oscillations (but possibly combined with the fundamental horizontal mode), and one case appears to be a combination of the fundamental vertical and horizontal modes, while in three cases it is not possible to clearly distinguish between the fundamental mode and the second-harmonic of the horizontal oscillation. In five other cases it is not possible to clearly distinguish between a fundamental horizontal mode and the second-harmonic of a vertical mode.Comment: 12 pages, 10 figures, 2 tables. A&A in pres

Small clusters - MPI usage for solving MHD equations with the FLASH code

Despite fast development of computer technology some numerical problems are still too complex to be solved using personal computers. In such cases the use of supercomputers can be a good choice. However, running jobs at computer centers involves necessity of queuing. Additionally, problems with fast transmission may arise if output files are large enough. An alternative solution is to build multiprocessor clusters of computers on which Message Passing Interface is implemented. In this paper application of MPI is presented for the case of the FLASH code which solves initial-value problems for magnetohydrodynamic equations

The effect of the environment on the P1/P2 period ratio for kink oscillations of coronal loops

The P1/P2 period ratio of transversal loop oscillations is currently used for the diagnostics of longitudinal structuring of coronal loops as its deviation from 2 is intrinsically connected to the density scale-height along coronal loops and/or the sub-resolution structure of the magnetic field. The same technique can be applied not only to coronal structures, but also to other oscillating magnetic structures. The oscillations in magnetic structures are described by differential equations whose coefficients depend on the longitudinal structure of the plasma. Using a variational principle written for the transversal component of the velocity vector, developed earlier by McEwan et al. (2008), we investigate how the different temperature of the environment compared to the temperature of the magnetic structure will influence the P1/P2 ratio for typical coronal and prominence conditions. The possible changes are translated into quantities that are used in the process of remote plasma diagnostics in the solar atmosphere

Enhancing employability through hospital placements for Biomedical Science students: A Case Study from the University of Essex, UK

Collaboration between Universities and hospitals has provided the National Health Service (NHS) with many excellent Biomedical Scientists through the placement year scheme. Here, we document the number of students joining the placement scheme and the number and type of hospital departments offering student placements over a 10-year period. Prior to 2012, students were able to join fully-funded placements through the Higher Education Funding Council for England (HEFCE). Since then, there has been a fluctuation in numbers completing a placement year at the University of Essex, but the employability of these graduates remains consistently higher than our 3-year graduates. We demonstrate the positive impact of completing a placement year in an NHS hospital laboratory for students, and the contribution to university metrics in good degrees and graduate outcomes as well as the provision of much needed, qualified biomedical science staff to hospitals

The Transient Stability Study of a Synchronous Generator Based on the Rotor Angle Stability

Transient stability is an important aspect in the operation of electrical power system. In case of fault occurs in the system, the determining of fault clearing time of circuit breaker is considered one of the main factors to ensure power transfer of the system. This paper is aim to study the transient stability of single machine infinite bus system (SMIB), based on the rotor angle stability. The study is performed to determine the influence of the critical clearing time of the circuit breakers on the rotor angle stability of the generator in the case of three phase fault. For obtaining and determining numerically the nature of the rotor angle of machine, we applied the Step-by-step method for different values of fault clearing time. The results of simulation indicate that determine of critical clearing time is a major evaluation in stability studies. The system model is created in MATLAB/ SIMULINK software

Seizure semiology of anti‐LGI1 antibody encephalitis

Limbic encephalitis associated with anti‐LGI1 antibody (LGI1 encephalitis) presents with a variety of features, the most prominent of which include seizures and progressive disturbance of memory and behaviour. Although varied in semiology, recognition of the pattern of seizures in LGI1 encephalitis is important, as early diagnosis and definitive treatment may prevent subsequent development of cognitive impairment. We present a patient with LGI1 encephalitis and “faciobrachial dystonic seizures‐plus”, which began as classic faciobrachial dystonic seizures and progressed to focal seizures with impaired awareness, dacrystic/gelastic‐like outbursts, ictal speech, manual automatisms, and autonomic signs (tachycardia). Recognition of the broad range of seizure types associated with LGI1 encephalitis is crucial for early diagnosis and definitive treatment. [Published with video sequence on www.epilepticdisorders.com]Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/142082/1/epd212047.pd

Kapasitas Adaptif Lokal Pemerintah Desa Dalam Penerapan Sistem Pemerintahan Berbasis Elektronik di Kabupaten Bengkalis

Perkembangan teknologi dan informasi mempermudah pekerjaan dan aktivitas manusia. Teknologi dan Informasi menjadikan kehidupan manusia jauh lebih efesien. Termasuk dalam pengelolaan organisasi pemerintahan, mulai banyak penerapan teknologi dan informasi guna menunjang jalannya pemerintahan. Banyak aplikasi sistem pemerintahan desa, yang mencangkup ePerforma Base Budgeting (ePlanning, eBudgeting, eProcurement, eMoney, eKinerja, eAudit). Kemudian yang menjadi menarik adalah pertanyaan apakah desa paham teknologi? Apakah desa mampu melaksanakan sistem pemerintahan berbasis teknologi?.Tujuan dari penelitian ini untuk melihat kapasitas adaptif lokal dalam penerapan kebijakan Sistem Pemerintahan Berbasis Teknologi (SPBE)  di desa. Salah satu daerah yang gencar melakukan ini adalah Pemerintah Kabupaten Bengkalis. Hampir seluruh desa di Kabupaten Bengkalis minimal telah memiliki website desa. Penelitian ini menggunakan metode kualitatif deskriptif. Untuk menggambarkan kaspasitas adaptif lokal dalam penerapan SPBE di desa, akan digunakan local adaptive capacity (LCA) framework. Kemudian, pengumpulan data dilakukan dengan metode wawancara, observasi dan dokumentasi kepada informan atau narasumber yang telah ditetapkan dengan teknik cluster, purposive, dan random sampling. Penentuan desa yang akan diteliti berdasarkan status desa yang terdiri dari desa tertinggal, berkembang, maju dan mandiri