462 research outputs found
Organizational Development: An Assessment with Implications for Clinical Sociology
This paper examines organizational development (OD) as a clinical sociological strategy. OD techniques are diverse and include interventions ranging from stress management to quality-of-work-life programs. Strengths and weaknesses of OD approaches and reasons for the recent reemergence of interest in organizational and human resource development are explored.
Four specific criticisms of OD are discussed: (1) lack of congruence in values, cognition, and action; (2) failure to examine meta-assumptions and values of organizational problem solving and learning; (3) simplistic understanding of organizational politics; (4) inability to create internal changes that deal with external complexity and environmental turbulence.
Three issues are raised: (1) the proper unit of analysis for clinical sociological action research; (2) the incorporation of macro-level concepts like culture and systems in conceptualizing organizational development and change; (3) the identification and explanation of learning co straints under which organizations and individuals operate
Bruce Gutknecht
UNF Oral History Project Interview of Bruce Gutknecht by James B. Crooks on January 19, 200
Влияние на технолого-производственные риски временного фактора возникновения пламенного горения твердофазных материалов
Conformal Mapping on Rough Boundaries II: Applications to bi-harmonic problems
We use a conformal mapping method introduced in a companion paper to study
the properties of bi-harmonic fields in the vicinity of rough boundaries. We
focus our analysis on two different situations where such bi-harmonic problems
are encountered: a Stokes flow near a rough wall and the stress distribution on
the rough interface of a material in uni-axial tension. We perform a complete
numerical solution of these two-dimensional problems for any univalued rough
surfaces. We present results for sinusoidal and self-affine surface whose slope
can locally reach 2.5. Beyond the numerical solution we present perturbative
solutions of these problems. We show in particular that at first order in
roughness amplitude, the surface stress of a material in uni-axial tension can
be directly obtained from the Hilbert transform of the local slope. In case of
self-affine surfaces, we show that the stress distribution presents, for large
stresses, a power law tail whose exponent continuously depends on the roughness
amplitude
Characterization of the first true coaxial 18-fold segmented n-type prototype detector for the GERDA project
The first true coaxial 18-fold segmented n-type HPGe prototype detector
produced by Canberra-France for the GERDA neutrinoless double beta-decay
project was tested both at Canberra-France and at the Max-Planck-Institut fuer
Physik in Munich. The main characteristics of the detector are given and
measurements concerning detector properties are described. A novel method to
establish contacts between the crystal and a Kapton cable is presented.Comment: 21 pages, 16 Figures, to be submitted to NIM
The Photobiomodulation Effect of 940nm Laser Irradiation on Enterococcus faecalis in Human Root Dentin Slices of Varying Thicknesses
The main etiological factor of pulpal and periapical
infections is the invasion of bacteria into the pulpal
and endodontic systems.1
Successful treatment of these
infections would require the removal and/or destruction
of these microorganisms and create an effective coronal
and apical seal to prohibit the reinfection of bacteria and
influx of nutrients into the endodontic system. The ability
of bacteria to penetrate deep into the dentin tubules and
to form biofilms as well as the adhesion of certain bacteria
to the dentin walls makes the destruction and removal of
bacteria from the three-dimensional dentinal network
a challenging task.2,3 Due to the complexity of this
network, about 30%-45% of the root canal system escapes
chemo-mechanical instrumentation4
as per the normal
endodontic procedure with the dentist. Lasers have been
used as an additional step to kill bacteria that could not be
reached by chemo-mechanical instrumentation. Studies
show that in favourable conditions, bacteria can penetrate
to a depth of more than 1000 μm into the dentinal tubules.2
Numerous previous studies have been conducted to
evaluate the bactericidal effect of various wavelengths
of lasers, but most of these studies were conducted on
dentine slices of 100, 300, 500, and 1000 μm.5-7 They were
conducted with dentine samples up to 1000 μm, therefore
limiting our understanding as to the effects of lasers and
biocides, with one study beyond 2000 μm.8
This in vitro
study aimed to compare the photobiomodulation effect of
a 940 nm laser on Enterococcus faecalis through varying
thicknesses of human root dentin slices
Conformal Mapping on Rough Boundaries I: Applications to harmonic problems
The aim of this study is to analyze the properties of harmonic fields in the
vicinity of rough boundaries where either a constant potential or a zero flux
is imposed, while a constant field is prescribed at an infinite distance from
this boundary. We introduce a conformal mapping technique that is tailored to
this problem in two dimensions. An efficient algorithm is introduced to compute
the conformal map for arbitrarily chosen boundaries. Harmonic fields can then
simply be read from the conformal map. We discuss applications to "equivalent"
smooth interfaces. We study the correlations between the topography and the
field at the surface. Finally we apply the conformal map to the computation of
inhomogeneous harmonic fields such as the derivation of Green function for
localized flux on the surface of a rough boundary
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