12,936 research outputs found
Coâoperative crossâplatform courseware development
The UKMCC (UK Mathematics Courseware Consortium) is a Consortium funded under TLTP (Training and Learning Technology Programme) to produce courseware for service mathematics teaching, using the SEFI (SociĂ©tĂ© EuropĂ©enne pour la Formation des IngĂ©nieurs) syllabus. There are agreed courseware design guidelines and a simple courseware management system which allows crossâreferencing. Courseware is divided into modules, with an author as implementer for each. On any one hardware platform, a variety of authoring languages is possible. Across hardware platforms, the design guidelines ensure that conversion is possible, and will preserve look and feel. We argue here that these arrangements provide a basis for continued coâoperation between authors and future development as the technology changes
Reading leadership through Hegelâs master/slave dialectic: towards a theory of the powerlessness of the powerful
YesThis paper develops a theory of the subjectivity of the leader through the philosophical lens of
Hegelâs master/slave dialectic and its recent interpretation by the philosopher Judith Butler. This is
used to analyse the working life history of a man who rose from poverty to a leadership position
in a large company and eventually to running his own successful business. Hegelâs dialectic is
foundational to much Western thought, but in this paper, I rashly update it by inserting a leader in
between the master, whose approval the leader needs if s/he is to sustain self-hood, and the
follower, who becomes a tool that the leader uses when trying to gain that elusive approval. The
analysis follows the structure of Butlerâs reading of the Dialectic and develops understanding of
the norms that govern how leaders should act and the persons they should be. Hard work has
become for leaders an ethical endeavour, but they grieve the sacrifice of leisure. They enjoy a
frisson of erotic pleasure at their power over others but feel guilt as a result. They must prove
their leadership skills by ensuring their followers are perfect employees but at the same time must
prove their followers are poor workers who need their continued leadership. This leads to the
conclusion that the leader is someone who is both powerful and powerless. This analysis is
intended not to demonize leaders, but to show the harm that follows the emphasis on leadership
as a desirable and necessary organizational function
Review essay â New directions in queer theory: recent theorizing in the work of Lynne Huffer, Leo Bersani and Adam Phillips, and Lauren Berlant and Lee Edelman
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Alien Registration- Harding, Booth H. (Madison, Somerset County)
https://digitalmaine.com/alien_docs/6583/thumbnail.jp
Nanophotonic hybridization of narrow atomic cesium resonances and photonic stop gaps of opaline nanostructures
We study a hybrid system consisting of a narrowband atomic optical resonance
and the long-range periodic order of an opaline photonic nanostructure. To this
end, we have infiltrated atomic cesium vapor in a thin silica opal photonic
crystal. With increasing temperature, the frequencies of the opal's
reflectivity peaks shift down by >20% due to chemical reduction of the silica.
Simultaneously, the photonic bands and gaps shift relative to the fixed
near-infrared cesium D1 transitions. As a result the narrow atomic resonances
with high finesse (f/df=8E5) dramatically change shape from a usual dispersive
shape at the blue edge of a stop gap, to an inverted dispersion lineshape at
the red edge of a stop gap. The lineshape, amplitude, and off-resonance
reflectivity are well modeled with a transfer-matrix model that includes the
dispersion and absorption of Cs hyperfine transitions and the
chemically-reduced opal. An ensemble of atoms in a photonic crystal is an
intriguing hybrid system that features narrow defect-like resonances with a
strong dispersion, with potential applications in slow light, sensing and
optical memory.Comment: 8 pages, 6 figure
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Managing eating and drinking difficulties (dysphagia) with children who have learning disabilities: What is effective?
People who work with children who have neurological and learning disabilities frequently need to manage the health and emotional risks associated with eating, drinking and swallowing (dysphagia). Some approaches can support children to develop oral feeding competence or to maximise their ability to maintain some oral intake supplemented with tube feeding. However, some clinicians feel that oral-motor exercises can support eating and drinking skills as well as speech and language development, whereas there is little evidence to support this.
The implied âbeneficialâ association between oral-motor exercises, speech and swallowing skills gives a false impression in terms of future outcomes for parents and carers of children with learning disabilities. This paper considers oral-motor approaches in the remediation of dysphagia and the need for a cultural shift away from this view. Realistic and useful outcomes for people with learning disabilities need to be an essential part of therapeutic intervention
Constraints on the Growth and Spin of the Supermassive Black Hole in M32 From High Cadence Visible Light Observations
We present 1-second cadence observations of M32 (NGC221) with the CHIMERA
instrument at the Hale 200-inch telescope of the Palomar Observatory. Using
field stars as a baseline for relative photometry, we are able to construct a
light curve of the nucleus in the g-prime and r-prime band with 1sigma=36
milli-mag photometric stability. We derive a temporal power spectrum for the
nucleus and find no evidence for a time-variable signal above the noise as
would be expected if the nuclear black hole were accreting gas. Thus, we are
unable to constrain the spin of the black hole although future work will use
this powerful instrument to target more actively accreting black holes. Given
the black hole mass of (2.5+/-0.5)*10^6 Msun inferred from stellar kinematics,
the absence of a contribution from a nuclear time-variable signal places an
upper limit on the accretion rate which is 4.6*10^{-8} of the Eddington rate, a
factor of two more stringent than past upper limits from HST. The low mass of
the black hole despite the high stellar density suggests that the gas liberated
by stellar interactions was primarily at early cosmic times when the low-mass
black hole had a small Eddington luminosity. This is at least partly driven by
a top-heavy stellar initial mass function at early cosmic times which is an
efficient producer of stellar mass black holes. The implication is that
supermassive black holes likely arise from seeds formed through the coalescence
of 3-100 Msun mass black holes that then accrete gas produced through stellar
interaction processes.Comment: 8 pages, 3 figures, submitted to the Astrophysical Journal, comments
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