2,065 research outputs found
Coordination and Large-scale Complex Information Technology Systems: A Preliminary Literature Review and Exploration
Constituting Boundaries within Mental Health Care: Tensions, Hierarchies and the Politics of Distribution
Towards formative interpretation: a theological hermeneutical proposal
How can we read the Bible to be formed as readers? This question opens a number of possible avenues of academic inquiry, but the one taken in this paper is mainly concerned with hermeneutical questions of how we read the Bible and whether we can formulate a hermeneutical framework for formative interpretation. To that end we analyse interpretative approaches of the modern era and ask whether these are hospitable or hostile to Christian formation. Our findings show the negative effects of pluralism and secularisation that dominate in the field of hermeneutics. Our work then focuses on the development of a theological hermeneutics, within which formative interpretation receives stable goals and criteria. This we achieve in three steps; one, we propose three basic hermeneutical decisions that constitute theological hermeneutics; two, we define and describe formation from a Christian perspective and use those insights as guidelines for formative interpretation; three, we describe two formal characteristics of formative interpretation. In essence, this paper sees formative interpretation as an ecclesial task that focuses on discernment of God’s being and presence in the world, which Scripture witnesses of and explains. Formative interpretation is a holistic task of the reader to bring one’s whole self before God in the reading of Scripture, and in that posture and practice we expect God to speak through the entirety of Scripture to use today
Prospects of higher-order Laguerre Gauss modes in future gravitational wave detectors
The application of higher-order Laguerre Gauss (LG) modes in large-scale
gravitational wave detectors has recently been proposed. In comparison to the
fundamental mode, some higher-order Laguerre Gauss modes can significantly
reduce the contribution of coating Brownian noise. Using frequency domain
simulations we give a detailed analysis of the longitudinal and angular control
signals derived with a LG33 mode in comparison to the fundamental TEM00 mode.
The performance regarding interferometric sensing and control of the LG33 mode
is found to be similar, if not even better in all aspects of interest. In
addition, we evaluate the sensitivity gain of the implementation of LG33 modes
into the Advanced Virgo instrument. Our analysis shows that the application of
the LG33 mode results in a broadband improvement of the Advanced Virgo
sensitivity, increasing the potential detection rate of binary neutron star
inspirals by a factor 2.1.Comment: 12 pages, 8 figure
The Growth Mindset School Community
Traditional school models perpetuate limited notions of ability. Established in systems designed to label and sort, educators must examine their beliefs about ability and the ways culture and power structures impact expectations and student achievement. By adopting a growth mindset lens and applying distributed leadership to systems within a school, educational leaders can enhance opportunities for all children. The Growth Mindset School Community describes an organization committed to growth and reflective processes intended to monitor thinking and procedures impacting learning and growth. Teacher expectations, feedback, assessment, and grading practices, behavior management, special education, teacher evaluation, and leadership models are all systems that can encourage or limit. This text examines each component through a growth mindset frame and makes recommendations to current or aspiring educators
DC-readout of a signal-recycled gravitational wave detector
All first-generation large-scale gravitational wave detectors are operated at
the dark fringe and use a heterodyne readout employing radio frequency (RF)
modulation-demodulation techniques. However, the experience in the currently
running interferometers reveals several problems connected with a heterodyne
readout, of which phase noise of the RF modulation is the most serious one. A
homodyne detection scheme (DC-readout), using the highly stabilized and
filtered carrier light as local oscillator for the readout, is considered to be
a favourable alternative. Recently a DC-readout scheme was implemented on the
GEO 600 detector. We describe the results of first measurements and give a
comparison of the performance achieved with homodyne and heterodyne readout.
The implications of the combined use of DC-readout and signal-recycling are
considered.Comment: 11 page
Review of the Laguerre-Gauss mode technology research program at Birmingham
Gravitational wave detectors from the advanced generation onwards are
expected to be limited in sensitivity by thermal noise of the optics, making
the reduction of this noise a key factor in the success of such detectors. A
proposed method for reducing the impact of this noise is to use higher-order
Laguerre-Gauss (LG) modes for the readout beam, as opposed to the currently
used fundamental mode. We present here a synopsis of the research program
undertaken by the University of Birmingham into the suitability of LG mode
technology for future gravitational wave detectors. This will cover our
previous and current work on this topic, from initial simulations and table-top
LG mode experiments up to implementation in a prototype scale suspended cavity
and high-power laser bench
Triple Michelson Interferometer for a Third-Generation Gravitational Wave Detector
The upcoming European design study `Einstein gravitational-wave Telescope'
represents the first step towards a substantial, international effort for the
design of a third-generation interferometric gravitational wave detector. It is
generally believed that third-generation instruments might not be installed
into existing infrastructures but will provoke a new search for optimal
detector sites. Consequently, the detector design could be subject to fewer
constraints than the on-going design of the second generation instruments. In
particular, it will be prudent to investigate alternatives to the traditional
L-shaped Michelson interferometer. In this article, we review an old proposal
to use three Michelson interferometers in a triangular configuration. We use
this example of a triple Michelson interferometer to clarify the terminology
and will put this idea into the context of more recent research on
interferometer technologies. Furthermore the benefits of a triangular detector
will be used to motivate this design as a good starting point for a more
detailed research effort towards a third-generation gravitational wave
detector.Comment: Minor corrections to the main text and two additional appendices. 14
pages, 6 figure
The upgrade of GEO600
The German / British gravitational wave detector GEO 600 is in the process of
being upgraded. The upgrading process of GEO 600, called GEO-HF, will
concentrate on the improvement of the sensitivity for high frequency signals
and the demonstration of advanced technologies. In the years 2009 to 2011 the
detector will undergo a series of upgrade steps, which are described in this
paper.Comment: 9 pages, Amaldi 8 conference contributio
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