7,383 research outputs found
Different aspects of the lived experience of intellectual disabilities
The final, definitive version of this article has been published in the Journal, Journal of Intellectual Disabilities: JOID, Vol.14 Issue 1, 2010, Copyright SAGE Publications Ltd on SAGE Journals Online: http://online.sagepub.com/In this issue of Journal of Intellectual Disabilities the first three papers present different aspects of the lived experience of intellectual disabilities, and each of these is undertaken through the use of different methodological approaches. These experiences are the predominant feature in this issue, and are expressed through mothers and informal carers as well as through people with learning disabilities themselves. This is followed by a ‘case note’ follow up study concerning sterilisation of women with intellectual disabilities. The final paper moves to a ‘scoping review’ based on existing literature to explore the role, if any, for social care practitioners in the process of annual health checks for adults with learning disabilities in England.Peer reviewedFinal Accepted Versio
The One Loop Effective Super-Potential and Non-Holomorphicity
We calculate the Kahlerian and the lowest order non-Kahlerian contributions
to the one loop effective superpotential using super-Feynman graphs in the
massless Wess-Zumino Model, the massive Wess-Zumino Model and N=1, U(1) gauge
theory. We also calculate the Kahlerian term in Yang-Mills Theory for a general
gauge group. Using this latter result we find the one loop Kahlerian
contribution for N=2 Yang-Mills Theory in terms of N=1 superfields and we show
that it can only come from non-holomorphic contributions to the N=2 effective
potential.Comment: LaTeX, 10 pages, 7 figures, uses bezier.sty and ifthen.sty. First
amendment. The results are extended to include the Kahlerian term for a
general renormalisable N=1 supersymmetric theory, containing Wess-Zumino and
Yang-Mills multiplets with a cubic superpotential. One reference has been
changed and one has been added. Second amendment. One acknowledgment has been
altered in the `note added in proof
On Dimensional Extension of Supersymmetry: From Worldlines to Worldsheets
There exist myriads of off-shell worldline supermultiplets for
(N{\leq}32)-extended supersymmetry in which every supercharge maps a component
field to precisely one other component field or its derivative. A subset of
these extends to off-shell worldsheet (p,q)-supersymmetry and is characterized
by the twin theorems 2.1 and 2.2 in this note. The evasion of the obstruction
defined in these theorems is conjectured to be sufficient for a worldline
supermultiplet to extend to worldsheet supersymmetry; it is also a necessary
filter for dimensional extension to higher-dimensional spacetime. We show
explicitly how to "re-engineer" an Adinkra---if permitted by the twin theorems
2.1 and 2.2---so as to depict an off-shell supermultiplet of worldsheet
(p,q)-supersymmetry.Comment: LaTeX 3 times, added reference, minor edits and typo correctio
Noncommutative Supersymmetric Gauge Anomaly
We extend the general method of hep-th/0009192 to compute the consistent
gauge anomaly for noncommutative 4d SSYM coupled to chiral matter. The choice
of the minimal homotopy path allows us to obtain a simple and compact result.
We perform the reduction to components in the WZ gauge proving that our result
contains, as lowest component, the bosonic chiral anomaly for noncommutative YM
theories recently obtained in literature.Comment: 14 pages, plain Latex, no figure
On Supermultiplet Twisting and Spin-Statistics
Twisting of off-shell supermultiplets in models with 1+1-dimensional
spacetime has been discovered in 1984, and was shown to be a generic feature of
off-shell representations in worldline supersymmetry two decades later. It is
shown herein that in all supersymmetric models with spacetime of four or more
dimensions, this off-shell supermultiplet twisting, if non-trivial, necessarily
maps regular (non-ghost) supermultiplets to ghost supermultiplets. This feature
is shown to be ubiquitous in all fully off-shell supersymmetric models with
(BV/BRST-treated) constraints.Comment: Extended version, including a new section on manifestly off-shell and
supersymmetric BRST treatment of gauge symmetry; added reference
Historical Evidence of Importance to the Industrialization of Flat-plate Silicon Photovoltaic Systems, Volume 2
Problems which may arise as the low cost silicon solar array (LSSA) project attempts to industrialize the production technologies are defined. The charge to insure an annual production capability of 500 MW peak for the photovoltaic supply industry by 1986 was critically examined, and focused on one of the motivations behind this goal-concern over the timely development of industrial capacity to supply anticipated demand. Conclusions from the analysis are utilized in a discussion of LSSA's industrialization plans, particularly the plans for pilot, demonstration and commercial scale production plants. Specific recommendations for the implementation of an industrialization task and the disposition of the project quantity goal were derived
Superspace Measures, Invariant Actions, and Component Projection Formulae for (2,2) Supergravity
In the framework of the prepotential description of superspace
two-dimensional supergravity, we discuss the construction of invariant
integrals. In addition to the full superspace measure, we derive the measure
for chiral superspace, and obtain the explicit expressions for going from
superspace actions to component actions. We consider both the minimal
and the extended theories.Comment: 22 pages, Late
Generalized Attractor Points in Gauged Supergravity
The attractor mechanism governs the near-horizon geometry of extremal black
holes in ungauged 4D N=2 supergravity theories and in Calabi-Yau
compactifications of string theory. In this paper, we study a natural
generalization of this mechanism to solutions of arbitrary 4D N=2 gauged
supergravities. We define generalized attractor points as solutions of an
ansatz which reduces the Einstein, gauge field, and scalar equations of motion
to algebraic equations. The simplest generalized attractor geometries are
characterized by non-vanishing constant anholonomy coefficients in an
orthonormal frame. Basic examples include Lifshitz and Schrodinger solutions,
as well as AdS and dS vacua. There is a generalized attractor potential whose
critical points are the attractor points, and its extremization explains the
algebraic nature of the equations governing both supersymmetric and
non-supersymmetric attractors.Comment: 31 pages, LaTeX; v2, references fixed; v3, minor changes, version to
appear in Phys. Rev.
Feasibility test for a V-slit star mapper for pioneer spacecraft terminal navigation
A laboratory demonstration of the feasibility of using a V-slit star mapper to meet the sensitivity and accuracy of on-board navigational requirements for future Pioneer Missions to the outer planets was conducted by the Control and Sensors Laboratory of TRW. The breadboard was extremely simple in configuration, consisting of an end-on photomultiplier tube and a V-slit reticle located at the focal plane of the objective lens. In addition, a plano-convex lens was used between the reticle and the PMT in a Fabry-Perot configuration. The analytical effort indicated that the sensor should easily meet the requirements. The Pioneer SRA test set was examined to determine its basic accuracy and modify it where necessary to bring its accuracy into the 1-3 arc second range. The test results show that it is feasible to use this type of star mapper in the 10 arc second accuracy range. The test equipment accuracy (approximately 5 arc Sec) was sufficient to bound the sensor errors at less than 10 arc seconds
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