660 research outputs found
Reply to comment by H. Hasegawa on "Evolution of Kelvin-Helmholtz activity on the dusk flank magnetopause"
We demonstrate, on experimental grounds, that the justifications for the comment by Hasegawa [2009], hereinafter
H09, on work done by Foullon et al. [2008], hereinafter F08, are not well founded
Association of Palliative Care Consultation with Advance Directive Completion for Patients Admitted with an Acute Heart Failure Exacerbation
No abstract for research lette
Trajectories of Explorers 33, 34 and 35, July 1966 - July 1968
Solar ecliptic plane projections on Explorer 33, 34, and 35 satellite orbit
On the multispacecraft determination of periodic surface wave phase speeds and wavelengths
Observations of surface waves on the magnetopause indicate a wide range of phase velocities and wavelengths. Their multispacecraft analysis allows a more precise determination of wave characteristics than ever before and reveal shortcomings of approximations to the phase speed that take a predetermined fraction of the magnetosheath speed or the average flow velocity in the boundary layer. We show that time lags between two or more spacecraft can give a qualitative upper estimate, and we confirm the unreliability of flow approximations often used by analyzing a few cases. Using twoâpoint distant magnetic field observations and spectral analysis of the tailward magnetic field component, we propose an alternative method to estimate the wavelength and phase speed at a single spacecraft from a statistical fit to the data at the other site
Mathematical models of magnetospheric convection and its coupling to the ionosphere
Mathematical models of magnetospheric convection and its coupling to ionospher
Recovery phase of magnetic storms induced by different interplanetary drivers
Statistical analysis of Dst behaviour during recovery phase of magnetic
storms induced by different types of interplanetary drivers is made on the
basis of OMNI data in period 1976-2000. We study storms induced by ICMEs
(including magnetic clouds (MC) and Ejecta) and both types of compressed
regions: corotating interaction regions (CIR) and Sheaths. The shortest,
moderate and longest durations of recovery phase are observed in ICME-, CIR-,
and Sheath-induced storms, respectively. Recovery phases of strong ( nT) magnetic storms are well approximated by hyperbolic functions
with constant times for all types of drivers
while for moderate ( nT) storms profile can not
be approximated by hyperbolic function with constant because
hyperbolic time increases with increasing time of recovery phase.
Relation between duration and value for storms induced by ICME and
Sheath has 2 parts: and duration correlate at small durations while
they anticorrelate at large durations.Comment: 18 pages, 4 figures, 2 tables, submitted to JGR special issue
"Response of Geospace to High-Speed Streams
Geoeffectiveness and efficiency of CIR, Sheath and ICME in generation of magnetic storms
We investigate relative role of various types of solar wind streams in
generation of magnetic storms. On the basis of the OMNI data of interplanetary
measurements for the period of 1976-2000 we analyze 798 geomagnetic storms with
Dst < -50 nT and their interplanetary sources: corotating interaction regions
(CIR), interplanetary CME (ICME) including magnetic clouds (MC) and Ejecta and
compression regions Sheath before both types of ICME. For various types of
solar wind we study following relative characteristics: occurrence rate; mass,
momentum, energy and magnetic fluxes; probability of generation of magnetic
storm (geoeffectiveness) and efficiency of process of this generation. Obtained
results show that despite magnetic clouds have lower occurrence rate and lower
efficiency than CIR and Sheath they play an essential role in generation of
magnetic storms due to higher geoeffectiveness of storm generation (i.e higher
probability to contain large and long-term southward IMF Bz component).Comment: 23 pages, 4 figures, 3 tables, submitted to JGR special issue
"Response of Geospace to High-Speed Streams
âI know my body better than anyone elseâ Perspectives of people who inject drugs on antimicrobial treatment decision making for serious infections
Introduction:
âą Few studies have examined the perspectives of patients with lived experience regarding outpatient treatment options for injection drug use (IDU) associated infections.
âą We sought to better understand the perspectives of both community partners with lived experience who work with people who inject drugs (PWID) and hospitalized patients with IDU-associated infections on shared treatment decision making.https://knowledgeconnection.mainehealth.org/lambrew-retreat-2023/1009/thumbnail.jp
Never Mind the Gap: Formative Assessment Confronted with Deweyâs and Gadamerâs Concept of Experience
The notion of âclosing the learning gapâ is widely used in the conceptualisation of formative assessment. It builds on an unarticulated assumption that students' learning can and should be controlled towards predefined outcomes. This article discusses this control assumption in the light of the concept of the American philosopher John Dewey and the German philosopher HansâGeorg Gadamer. Their conceptualisation challenges the idea of learning as a linear and controllable process that results in stable and predictable outcomes. Using the concept of experience, we argue that learning follows a continuous circular movement where previous experiences condition future interpretations and that every experience changes the subject. This process of change is both unpredictable and diverse and requires that attention is paid to the uniqueness of each situation and to students as subjects. Following the discussion, we propose a model for considering the extensiveness and rigidity of formative assessment practices and that authors pay attention to whether they conceptualise formative assessment in a way that promotes student and teacher âgap closingâ and control.publishedVersio
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