1,107 research outputs found
Capturing and managing email knowledge.
In many successful organisations today, significant resources are
invested in training and development efforts exploring group
dynamics and effective team building. The challenge from a
knowledge management perspective is to explore how technology
could facilitate knowledge sharing (both tacit and explicit) in a
group context. The paper highlights the benefits of developing such
Knowledge Management tools to make better use of the
information contained within email messages, and shows how
organisations could become more effective by adopting such an
application
The effectiveness of training in reducing email defects
Previous research has shown that there are many defects associated with email use
within the workplace. This paper describes the effectiveness of email training in
enabling employees to write better emails. Employees were asked to evaluate the
emails they received from specified senders before and after the senders had received
training. These emails were marked against a set of ten criteria that covered different
aspects of email, including whether the email had a suitable subject line, whether it
was relevant and if it was easy to read. By comparing the results before and after the
training it is possible to see how effective the training has been and which areas of
email use benefited the most from the training. The results show that some of the
email defects are more receptive to training than others. The data also shows the
relationships between the evaluation criteria used. This is important because it shows
how some of the problems with email are related; similarly it shows how an
improvement in one area is likely to lead to an improvement in another. This paper
highlights some of the problem areas often associated with email and shows the effect
of training in reducing these email defects
Email training significantly reduces email defects
Organisations are now becoming aware of the problems associated with email use and
are keen to reduce these defects. These email defects relate to the ineffective way that
email is used within organisations, and are not only limited to the volume of email
that is sent and received, but also the quality of the email content. Email defects lead
to inefficiencies within the workplace as employees spend more time dealing with
email rather than doing other aspects of their job. This paper firstly examines how
email is used within a large organisation and highlights the defects associated with
email. The initial results show that these defects affect some groups of employees
more than others. The paper also reports on the effectiveness of email training in
reducing the defects associated with email use. The results show that some of these
defects are related and that training can significantly reduce some of the email defects
and improve the way people write emails
Measuring electronic communication defects and their impact at 3M
Although email is frequently often thought of as a quick and efficient
form of communication, often little thought is given to how email affects
the employee. This paper has made steps towards gaining a better
understanding of email communication and how it can be used more
effectively in an organisation. The results obtained from this study can
also provide the basis for communication usage policies and training,
which could then reduce wasted time and improve employee productivity.
It has also shown both the value of obtaining metrics and the difficulties
involved. The paper highlights some of the problems, and some of the
issues that need to be addressed with email communication within a large
organisation
Warped Reheating in Multi-Throat Brane Inflation
We investigate in some quantitative details the viability of reheating in
multi-throat brane inflationary scenarios by estimating and comparing the time
scales for the various processes involved. We also calculate within
perturbative string theory the decay rate of excited closed strings into KK
modes and compare with that of their decay into gravitons; we find that in the
inflationary throat the former is preferred. We also find that over a small but
reasonable range of parameters of the background geometry, these KK modes will
preferably tunnel to another throat (possibly containing the Standard Model)
instead of decaying to gravitons due largely to their suppressed coupling to
the bulk gravitons. Once tunneled, the same suppressed coupling to the
gravitons again allows them to reheat the Standard Model efficiently. We also
consider the effects of adding more throats to the system and find that for
extra throats with small warping, reheating still seems viable.Comment: 29 pages, 4 figures, discussions on closed string decay expanded,
references adde
Overproduction of cosmic superstrings
We show that the naive application of the Kibble mechanism seriously
underestimates the initial density of cosmic superstrings that can be formed
during the annihilation of D-branes in the early universe, as in models of
brane-antibrane inflation. We study the formation of defects in effective field
theories of the string theory tachyon both analytically, by solving the
equation of motion of the tachyon field near the core of the defect, and
numerically, by evolving the tachyon field on a lattice. We find that defects
generically form with correlation lengths of order M_s^{-1} rather than H^{-1}.
Hence, defects localized in extra dimensions may be formed at the end of
inflation. This implies that brane-antibrane inflation models where inflation
is driven by branes which wrap the compact manifold may have problems with
overclosure by cosmological relics, such as domain walls and monopoles.Comment: 31 pages, 16 figures, JHEP style; References added; Improved
discussion of initial condition
The effect of extra dimensions on gravity wave bursts from cosmic string cusps
We explore the kinematical effect of having extra dimensions on the gravity
wave emission from cosmic strings. Additional dimensions both round off cusps,
and reduce the probability of their formation. We recompute the gravity wave
burst, taking into account these two factors, and find a potentially
significant damping on the gravity waves of the strings.Comment: 33 pages, 8 figures, published versio
Brane Inflation and Cosmic String Tension in Superstring Theory
In a simple reanalysis of the KKLMMT scenario, we argue that the slow roll
condition in the D3-anti-D3-brane inflationary scenario in superstring theory
requires no more than a moderate tuning. The cosmic string tension is very
sensitive to the conformal coupling: with less fine-tuning, the cosmic string
tension (as well as the ratio of tensor to scalar perturbation mode) increases
rapidly and can easily saturate the present observational bound. In a
multi-throat brane inflationary scenario, this feature substantially improves
the chance of detecting and measuring the properties of the cosmic strings as a
window to the superstring theory and our pre-inflationary universe.Comment: Combined bounds from WMAP and SDSS Lyman alpha experiments are added
for analysis, changes are added to the tabl
Cosmic Strings and Superstrings
Cosmic strings are predicted by many field-theory models, and may have been
formed at a symmetry-breaking transition early in the history of the universe,
such as that associated with grand unification. They could have important
cosmological effects. Scenarios suggested by fundamental string theory or
M-theory, in particular the popular idea of brane inflation, also strongly
suggest the appearance of similar structures. Here we review the reasons for
postulating the existence of cosmic strings or superstrings, the various
possible ways in which they might be detected observationally, and the special
features that might discriminate between ordinary cosmic strings and
superstrings.Comment: Minor errors corrected and some references added, 34 pages, 6 figure
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