4,440 research outputs found
Building Trust in the Workplace
Most organisational writers would agree that we are living in an age of ‘discontinuity’, or paradox, Peters (1987), Handy (1996, 1998), Cloke and Goldsmith (2002). However, they would also argue that organizations are not prepared for the social, economic, political, technological and organizational change that they are currently experiencing and will continue to experience. Other writers suggest that to cope with this, ‘trust’ is a prerequisite. Further, whilst those of us who live and work in organisations would agree that trust is of vital importance for feelings of collaboration and well-being, our experience of trust in organisations is rare. The rate of absenteeism and stress in organisations is perhaps testament to this. However, whilst growing, the literature on trust in organisations, appears to conflict, and generally treats trust as some philosophical concept. We argue here that a more practical concept of trust needs to be developed, that treats trust as a process and not a static entity. To develop this we draw on psychological literature, conceptualising trust as a process, and argue that this can be developed through action research and action learning. Drawing on a practical example, we go on to argue that action learning and research are powerful ways for transforming institutional culture into safe environments where unconditional, trusting relationships can be continuously created and nurtured
An Integrated Approach: Techniques for Teaching Pronunciation Skills and Communicating in the ESL Classroom
Our intention in contributing to this book chapter is to bring together
some aspects of research and best practice in Oral Communication
teaching in both the Arts and the Sciences and in so doing, apply a
problem-solving approach to the teaching of successful Oral
Communication to Second Language learners. We define successful
Oral Communication as the process of giving and uveiving a clear
message. This process both weaves and is woven from our acculturated
concepts of reality and involves not only all aspects of pronunciation,
grammar and vocabulary, but also intention, and verbal and non-verbal
language
Optical diode based on the chirality of guided photons
Photons are nonchiral particles: their handedness can be both left and right.
However, when light is transversely confined, it can locally exhibit a
transverse spin whose orientation is fixed by the propagation direction of the
photons. Confined photons thus have chiral character. Here, we employ this to
demonstrate nonreciprocal transmission of light at the single-photon level
through a silica nanofibre in two experimental schemes. We either use an
ensemble of spin-polarised atoms that is weakly coupled to the nanofibre-guided
mode or a single spin-polarised atom strongly coupled to the nanofibre via a
whispering-gallery-mode resonator. We simultaneously achieve high optical
isolation and high forward transmission. Both are controlled by the internal
atomic state. The resulting optical diode is the first example of a new class
of nonreciprocal nanophotonic devices which exploit the chirality of confined
photons and which are, in principle, suitable for quantum information
processing and future quantum optical networks
Evaluating 5-nitrothiazoles as trypanocidal agents
OA Monitor ExerciseOA Monitor ExerciseThe growth inhibitory properties of a 5-nitrothiazole series was evaluated against Trypanosoma brucei. A subset of related compounds displayed the greatest potency towards the parasite while exhibiting little cytotoxic effect on mammalian cells, with this anti-parasitic activity being dependent on expression of a type I nitroreductase by the trypanosome. We conclude that the 5-nitrothiazole class of nitroheterocycle may represent new leads in the treatment of human African trypanosomiasis.BAV acknowledges financial support by FONDECYT Postdoctorado 313036
Depth of interaction and bias voltage depenence of the spectral response in a pixellated CdTe detector operating in time-over-threshold mode subjected to monochromatic X-rays
High stopping power is one of the most important figures of merit for X-ray detectors. CdTe is a promising material but suffers from: material defects, non-ideal charge transport and long range X-ray fluorescence. Those factors reduce the image quality and deteriorate spectral information. In this project we used a monochromatic pencil beam collimated through a 20μm pinhole to measure the detector spectral response in dependance on the depth of interaction. The sensor was a 1mm thick CdTe detector with a pixel pitch of 110μm, bump bonded to a Timepix readout chip operating in Time-Over-Threshold mode. The measurements were carried out at the Extreme Conditions beamline I15 of the Diamond Light Source. The beam was entering the sensor at an angle of \texttildelow20 degrees to the surface and then passed through \texttildelow25 pixels before leaving through the bottom of the sensor. The photon energy was tuned to 77keV giving a variation in the beam intensity of about three orders of magnitude along the beam path. Spectra in Time-over-Threshold (ToT) mode were recorded showing each individual interaction. The bias voltage was varied between -30V and -300V to investigate how the electric field affected the spectral information. For this setup it is worth noticing the large impact of fluorescence. At -300V the photo peak and escape peak are of similar height. For high bias voltages the spectra remains clear throughout the whole depth but for lower voltages as -50V, only the bottom part of the sensor carries spectral information. This is an effect of the low hole mobility and the longer range the electrons have to travel in a low field
Observation of multiple sausage oscillations in cool postflare loop
Using simultaneous high spatial (1.3 arc sec) and temporal (5 and 10 s)
resolution H-alpha observations from the 15 cm Solar Tower Telescope at ARIES,
we study the oscillations in the relative intensity to explore the possibility
of sausage oscillations in the chromospheric cool postflare loop. We use
standard wavelet tool, and find the oscillation period of ~ 587 s near the loop
apex, and ~ 349 s near the footpoint. We suggest that the oscillations
represent the fundamental and the first harmonics of fast sausage waves in the
cool postflare loop. Based on the period ratio P1/P2 ~ 1.68, we estimate the
density scale height in the loop as ~ 17 Mm. This value is much higher than the
equilibrium scale height corresponding to H-alpha temperature, which probably
indicates that the cool postflare loop is not in hydrostatic equilibrium.
Seismologically estimated Alfv\'en speed outside the loop is ~ 300-330 km/s.
The observation of multiple oscillations may play a crucial role in
understanding the dynamics of lower solar atmosphere, complementing such
oscillations already reported in the upper solar atmosphere (e.g., hot flaring
loops).Comment: 13 pages, 4 figures, accepted in MNRA
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