822 research outputs found
Reference gene selection and RNA preservation protocol in the cat flea, Ctenocephalides felis, for gene expression studies
This work was supported by a Knowledge Transfer Network BBSRC Industrial Case (#414 BB/L502467/1) studentship in association Zoetis Inc.Peer reviewedPostprin
Recommendations for Safe Separation Distances from the Kennedy Space Center (KSC) Vehicle Assembly Building (VAB) Using a Heat-Flux-Based Analytical Approach (Abridged)
The NASA Engineering and Safety Center (NESC) was requested to provide computational modeling to support the establishment of a safe separation distance surrounding the Kennedy Space Center (KSC) Vehicle Assembly Building (VAB). The two major objectives of the study were 1) establish a methodology based on thermal flux to determine safe separation distances from the Kennedy Space Center's (KSC's) Vehicle Assembly Building (VAB) with large numbers of solid propellant boosters containing hazard division 1.3 classification propellants, in case of inadvertent ignition; and 2) apply this methodology to the consideration of housing eight 5-segment solid propellant boosters in the VAB. The results of the study are contained in this report
Visual Systems for Interactive Exploration and Mining of Large-Scale Neuroimaging Data Archives
While technological advancements in neuroimaging scanner engineering have improved the efficiency of data acquisition, electronic data capture methods will likewise significantly expedite the populating of large-scale neuroimaging databases. As they do and these archives grow in size, a particular challenge lies in examining and interacting with the information that these resources contain through the development of compelling, user-driven approaches for data exploration and mining. In this article, we introduce the informatics visualization for neuroimaging (INVIZIAN) framework for the graphical rendering of, and dynamic interaction with the contents of large-scale neuroimaging data sets. We describe the rationale behind INVIZIAN, detail its development, and demonstrate its usage in examining a collection of over 900 T1-anatomical magnetic resonance imaging (MRI) image volumes from across a diverse set of clinical neuroimaging studies drawn from a leading neuroimaging database. Using a collection of cortical surface metrics and means for examining brain similarity, INVIZIAN graphically displays brain surfaces as points in a coordinate space and enables classification of clusters of neuroanatomically similar MRI images and data mining. As an initial step toward addressing the need for such user-friendly tools, INVIZIAN provides a highly unique means to interact with large quantities of electronic brain imaging archives in ways suitable for hypothesis generation and data mining
Report of the committee on a commercially developed space facility
Major facilities that could support significant microgravity research and applications activity are discussed. The ground-based facilities include drop towers, aircraft flying parabolic trajectories, and sounding rockets. Facilities that are intrinsically tied to the Space Shuttle range from Get-Away-Special canisters to Spacelab long modules. There are also orbital facilities which include recoverable capsules launched on expendable launch vehicles, free-flying spacecraft, and space stations. Some of these existing, planned, and proposed facilities are non-U.S. in origin, but potentially available to U.S. investigators. In addition, some are governmentally developed and operated whereas others are planned to be privately developed and/or operated. Tables are provided to show the facility, developer, duration, estimated gravity level, crew interaction, flight frequency, year available, power to payload, payload volume, and maximum payload mass. The potential of direct and indirect benefits of manufacturing in space are presented
An Exactly Conservative Integrator for the n-Body Problem
The two-dimensional n-body problem of classical mechanics is a non-integrable
Hamiltonian system for n > 2. Traditional numerical integration algorithms,
which are polynomials in the time step, typically lead to systematic drifts in
the computed value of the total energy and angular momentum. Even symplectic
integration schemes exactly conserve only an approximate Hamiltonian. We
present an algorithm that conserves the true Hamiltonian and the total angular
momentum to machine precision. It is derived by applying conventional
discretizations in a new space obtained by transformation of the dependent
variables. We develop the method first for the restricted circular three-body
problem, then for the general two-dimensional three-body problem, and finally
for the planar n-body problem. Jacobi coordinates are used to reduce the
two-dimensional n-body problem to an (n-1)-body problem that incorporates the
constant linear momentum and center of mass constraints. For a four-body
choreography, we find that a larger time step can be used with our conservative
algorithm than with symplectic and conventional integrators.Comment: 17 pages, 3 figures; to appear in J. Phys. A.: Math. Ge
RNA interference in the cat flea, Ctenocephalides felis : Approaches for sustained gene knockdown and evidence of involvement of Dicer-2 and Argonaute2
This work was supported by a Knowledge Transfer Network BBSRC Industrial Case (# BB/L502467/1) studentship in association with Zoetis Inc. We acknowledge the expert help provided by Nikki Kernell (Zoetis Inc., Kalamazoo) during the feeding trials. Declarations of interest: none.Peer reviewedPublisher PD
A two-phase model for smoothly joining disparate growth phases in the macropodid Thylogale billardierii
Generally, sigmoid curves are used to describe the growth of animals over their lifetime. However, because growth rates often differ over an animal's lifetime a single curve may not accurately capture the growth. Broken-stick models constrained to pass through a common point have been proposed to describe the different growth phases, but these are often unsatisfactory because essentially there are still two functions that describe the lifetime growth. To provide a single, converged model to age animals with disparate growth phases we developed a smoothly joining two-phase nonlinear function (SJ2P), tailored to provide a more accurate description of lifetime growth of the macropod, the Tasmanian pademelon Thylogale billardierii. The model consists of the Verhulst logistic function, which describes pouch-phase growth--joining smoothly to the Brody function, which describes post-pouch growth. Results from the model demonstrate that male pademelons grew faster and bigger than females. Our approach provides a practical means of ageing wild pademelons for life history studies but given the high variability of the data used to parametrise the second growth phase of the model, the accuracy of ageing of post-weaned animals is low: accuracy might be improved with collection of longitudinal growth data. This study provides a unique, first robust method that can be used to characterise growth over the lifespan of pademelons. The development of this method is relevant to collecting age-specific vital rates from commonly used wildlife management practices to provide crucial insights into the demographic behaviour of animal populations.Financial support was provided by the Tasmanian Community Forest Agreement: Alternatives to 1080 Programme. In-kind support was provided by
the University of Tasmania
Nurses\u27 Alumnae Association Bulletin, June 1969
Alumnae President\u27s Message
Officers and Chairmen
Financial Report
Progressive Changes at Jefferson
School of Nursing Report
Student Activities
School of Practical Nursing Report
Jefferson Expansion Report
Clerk-Typist Report
Committee Reports
Resume of Alumnae Meetings
Class News
1969 CLINIC Correspondence
Notice
LAPORAN INDIVIDU KEGIATAN PENGALAMAN LAPANGAN (PPL) PERIODE 18 JULI s.d 15 SEPTEMBER 2016 SMA NEGERI 2 BANGUNTAPAN
Praktik Pengalaman Lapangan (PPL) merupakan suatu wadah
untuk menerapkan/mengaplikasikan ilmu yang selama ini telah dipelajari
dalam bidang keahlian maupun ilmu keguruan yang berkaitan dengan
peserta didik dalam proses belajar mengajar. Praktik pengalaman lapangan
atau praktik mengajar ini mulai dilaksanakan pada tanggal 18 Juli s.d. 15
September 2016 berlokasi di SMA N 2 Banguntapan. Dalam praktik
mengajar mahasiswa terlebih dahulu melaksanakan persiapan
pembelajaran, yaitu membuat perencanaan pembelajaran dimulai dengan
membuat rencana pelaksanaan pembelajaran sampai dengan evaluasi yang
dilaksanakan. Kemudian melakukan koordinasi dan konsultasi kepada
guru pembimbing di sekolah tersebut.
Dalam bimbingan PPL, mahasiswa (penulis) mendapatkan
kesempatan untuk melaksanakan pembelajaran di kelas X IPS 1 dan X IPS
2. Kurikulum yang digunakan adalah Kurikulum 2013 (K13). Begitu pula
dengan penulisan Rencana Pelaksanaan Pembelajarannya (RPP),
penggunaan metode pembelajaran yang diterapkan adalah dengan metode
Problem Based Learning dan Cooperative Learning. Sedangkan media
yang digunakan adalah White Board, LCD, spidol, lembar kerja dan
mengadakan tugas individu untuk mengetahui sejauh mana kemampuan
siswa dalam memahami materi yang telah disampaikan. Pada tahap
pelaksanaan, mahasiswa mengajar sebanyak 6 kali dengan alokasi masingmasing
3 jam pelajaran setiap pertemuan.
Program kegiatan PPL dapat terlaksana dengan baik dan lancar
berkat adanya bimbingan dan arahan dari guru pembimbing dan dosen
pembimbing selama praktik mengajar serta peran aktif peserta didik
selama berlangsungnya KBM. Selain itu terlaksananya program PPL ini
tidak terlepas dari dukungan dan bantuan dari pihak sekolah yang telah
memberikan keluasan kesempatan kepada para mahasiswa PPL untuk
mengembangkan potensi yang dimilikinya
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