5,217 research outputs found
Reflective Pedagogies in Integrative Nursing
Pedagogy that is reflective, intuitive and revolves around person-centered, relationship-based experiences with opportunities to debrief for growth were identified as key to embedding the practice of Integrative Nursing. Specific learning activities that incorporate reflection include personal knowing, peer sharing, mindfulness and creative works of art. In the following sections, each learning activity is reviewed to provide concrete ways in which educators can cultivate the desire for human connection in students, and promote what is defined as Integrative Nursing within nursing practice
Development of a radiation hard version of the Analog Pipeline Chip APC128
The Analog Pipeline Chip (APC) is a low noise, low power readout chip for
silicon micro strip detectors with 128 channels containing an analog pipeline
of 32 buffers depth. The chip has been designed for operation at HERA with a
power dissipation of 300-400 muW per channel and has been used also in several
other particle physics experiments. In this paper we describe the development
of a radiation hard version of this chip that will be used in the H1 vertex
detector for operation at the luminosity upgraded HERA machine. A 128 channel
prototyping chip with several amplifier variations has been designed in the
radiation hard DMILL technology and measured. The results of various parameter
variations are presented in this paper. Based on this, the design choice for
the final production version of the APC128-DMILL has been made.Comment: 10 pages, 10 figure
On the Concept of Form in Geographical Studies
ABSTRACT - The concept of form in its subjective (strictly qualitative) connotations is inappropriate as the organizing principle for geographical investigations. Yet, elements identified as formal (structural/morphological) which are objectively measurable are valid for study and possible integrations toward holistic conclusions. Thus, if the form-function-process approach is to be advanced, the formal segment must be stated in a clearly determinable mode in order to allow integration
Hierarchy, Systems, and Geography
The concept of hierarchy in geographical studies has been applied primarily to identifications of structure and not process. This limited application is partly due to the omission of the concept in attempts at applying systems theory in geographic studies. Hierarchy as an organizing and integrating concept is an essential element in systems investigations. Several philosophical dichotomies that have hampered holistic geographical research efforts are reviewed, and the concept of hierarchy in process investigations is placed within the wider realm of systems theory. Extension of the integrating nature of geography into authentic interdisciplinary studies is encouraged
Global Analysis of Fragmentation Functions for Eta Mesons
Fragmentation functions for eta mesons are extracted at next-to-leading order
accuracy of QCD in a global analysis of data taken in electron-positron
annihilation and proton-proton scattering experiments. The obtained
parametrization is in good agreement with all data sets analyzed and can be
utilized, for instance, in future studies of double-spin asymmetries for
single-inclusive eta production. The Lagrange multiplier technique is used to
estimate the uncertainties of the fragmentation functions and to assess the
role of the different data sets in constraining them.Comment: 11 pages, 8 figures, updated reference
Next to leading order eta production at hadron colliders
Inclusive eta production at hadron colliders is considered,based on
evaluation of eta fragmentation functions at next to leading order. Absolute
predictions at LHC and SSC are presented, including the ratio ,
together with the estimate of the theoretical uncertainty, as a possible
neutral background to the detection.Comment: 8 pages, latex, FNT/T-93/13,14 figures avilable upon reques
Design and Tests of the Silicon Sensors for the ZEUS Micro Vertex Detector
To fully exploit the HERA-II upgrade,the ZEUS experiment has installed a
Micro Vertex Detector (MVD) using n-type, single-sided, silicon micro-strip
sensors with capacitive charge division. The sensors have a readout pitch of
120 micrometers, with five intermediate strips (20 micrometer strip pitch). The
designs of the silicon sensors and of the test structures used to verify the
technological parameters, are presented. Results on the electrical measurements
are discussed. A total of 1123 sensors with three different geometries have
been produced by Hamamatsu Photonics K.K. Irradiation tests with reactor
neutrons and Co-60 photons have been performed for a small sample of sensors.
The results on neutron irradiation (with a fluence of 1 x 10^{13} 1 MeV
equivalent neutrons / cm^2) are well described by empirical formulae for bulk
damage. The Co-60 photons (with doses up to 2.9 kGy) show the presence of
generation currents in the SiO_2-Si interface, a large shift of the flatband
voltage and a decrease of the hole mobility.Comment: 33 pages, 25 figures, 3 tables, accepted for publication in NIM
Compact Frontend-Electronics and Bidirectional 3.3 Gbps Optical Datalink for Fast Proportional Chamber Readout
The 9600 channels of the multi-wire proportional chamber of the H1 experiment
at HERA have to be read out within 96 ns and made available to the trigger
system. The tight spatial conditions at the rear end flange require a compact
bidirectional readout electronics with minimal power consumption and dead
material.
A solution using 40 identical optical link modules, each transferring the
trigger information with a physical rate of 4 x 832 Mbps via optical fibers,
has been developed and commisioned. The analog pulses from the chamber can be
monitored and the synchronization to the global HERA clock signal is ensured.Comment: 13 pages, 10 figure
AC-coupled GaAs microstrip detectors with a new type of integrated bias resistors
Full size single-sided GaAs microstrip detectors with integrated coupling
capacitors and bias resistors have been fabricated on 3'' substrate wafers.
PECVD deposited SiO_2 and SiO_2/Si_3N_4 layers were used to provide coupling
capacitaces of 32.5 pF/cm and 61.6 pF/cm, respectively. The resistors are made
of sputtered CERMET using simple lift of technique. The sheet resistivity of 78
kOhm/sq. and the thermal coefficient of resistance of less than 4x10^-3 /
degree C satisfy the demands of small area biasing resistors, working on a wide
temperature range.Comment: 20 pages, 9 figures, to be published in NIM
An SU(3) model for octet baryon and meson fragmentation
The production of the octet of baryons and mesons in e^+ e^- collisions is
analysed, based on considerations of SU(3) symmetry and a simple model for
SU(3) symmetry breaking in fragmentation functions. All fragmentation
functions, D_q^h(x, Q^2), describing the fragmentation of quarks into a member
of the baryon octet (and similarly for fragmentation into members of the meson
octet) are expressed in terms of three SU(3) symmetric functions, \alpha(x,
Q^2), \beta(x, Q^2), and \gamma(x, Q^2). With the introduction of an SU(3)
breaking parameter, \lambda, the model is successful in describing
hadroproduction data at the Z pole. The fragmentation functions are then
evolved using leading order evolution equations and good fits to currently
available data at 34 GeV and at 161 GeV are obtained.Comment: 24 pages LaTeX file including 11 postscript figure file
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