10,791 research outputs found
Repetition and difference: Lefebvre, Le Corbusier and modernity's (im)moral landscape: a commentary
This article engages with the relationship between social theory, architectural theory and material culture. The article is a reply to an article in a previous volume of the journal in question (Smith, M. (2001) ‘Repetition and difference: Lefebvre, Le Corbusier and modernity’s (im)moral landscape’, Ethics, Place and Environment, 4(1), 31-34) and, consequently, is also a direct engagement with another academic's scholarship. It represents a critique of their work as well as a recasting of their ideas, arguing that the matter in question went beyond interpretative issues to a direct critique of another author's scholarship on both Le Corbusier and Lefebvre. A reply to my article from the author of the original article was carried in a later issue of the journal (Smith, M. (2002) ‘Ethical Difference(s): a Response to Maycroft on Le Corbusier and Lefebvre’, Ethics, Place and Environment, 5(3), 260-269)
Interests and Identities in Peace Negotiations: Nigeria, Cameroon, and the Bakassi Peninsula
For close to fifty years, the territorial dispute between Nigeria and Cameroon continued over the region along their border known as the Bakassi peninsula. The dispute almost led to war in the mid-1990s, was settled by the International Court of Justice in 2002, and resulted in hand-off of the territory by Nigeria to Cameroon in 2008. Content analysis of newspapers from Nigeria and Cameroon for the year 2010 revealed underlying identity-based needs that had been left largely unaddressed. Analysis of Nigerian newspapers showed a prevalent discussion of unfulfilled identity needs and an unresolved identity-conflict potential. Analysis of Cameroonian newspapers revealed the fulfilling of a new identity as the Bakassi region was proactively populated with Cameroonian citizens, culture, and connectivity to the rest of the country. The Bakassi dispute resolution was heralded as a success by state leadership, but it was not perceived in the same way by the general population as evidenced in the content analysis. Public opinions expressed in the media were less reflective of a cooperative result and more reflective of a zero-sum negotiation result with a clear winner and a clear loser
Incommensurate Mott Insulator in One-Dimensional Electron Systems close to Quarter Filling
A possibility of a metal-insulator transition in molecular conductors has
been studied for systems composed of donor molecules and fully ionized anions
with an incommensurate ratio close to 2:1 based on a one-dimensional extended
Hubbard model, where the donor carriers are slightly deviated from quarter
filling and under an incommensurate periodic potential from the anions. By use
of the renormalization group method, interplay between commensurability energy
on the donor lattice and that from the anion potential has been studied and it
has been found that an "incommensurate Mott insulator" can be generated. This
theoretical finding will explain the metal-insulator transition observed in
(MDT-TS)(AuI).Comment: 4 pages, 4 figures, submitted to J. Phys. Soc. Jpn. at December 24
200
Screening methods for age-related hearing loss in older patients with cancer: A review of the literature
© 2018 by the authors. As people grow older, they may experience loss in hearing sensitivity. Age-related hearing loss may negatively affect the patient's quality of life as it may lead to social isolation. In older patients with cancer, hearing loss can seriously interfere with the patient's ability to deal properly with all aspects of their disease, and may have a cumulative effect on their already decreased quality of life. Therefore, the proper screening of those conditions is essential in order to optimise the patient's comfort during and after treatment. This review article aims at providing a concise image of the nature of age-related hearing loss, and provides an overview of the screening methods that could be used in older patients with cancer
Femtosecond x rays from laser-plasma accelerators
Relativistic interaction of short-pulse lasers with underdense plasmas has
recently led to the emergence of a novel generation of femtosecond x-ray
sources. Based on radiation from electrons accelerated in plasma, these sources
have the common properties to be compact and to deliver collimated, incoherent
and femtosecond radiation. In this article we review, within a unified
formalism, the betatron radiation of trapped and accelerated electrons in the
so-called bubble regime, the synchrotron radiation of laser-accelerated
electrons in usual meter-scale undulators, the nonlinear Thomson scattering
from relativistic electrons oscillating in an intense laser field, and the
Thomson backscattered radiation of a laser beam by laser-accelerated electrons.
The underlying physics is presented using ideal models, the relevant parameters
are defined, and analytical expressions providing the features of the sources
are given. Numerical simulations and a summary of recent experimental results
on the different mechanisms are also presented. Each section ends with the
foreseen development of each scheme. Finally, one of the most promising
applications of laser-plasma accelerators is discussed: the realization of a
compact free-electron laser in the x-ray range of the spectrum. In the
conclusion, the relevant parameters characterizing each sources are summarized.
Considering typical laser-plasma interaction parameters obtained with currently
available lasers, examples of the source features are given. The sources are
then compared to each other in order to define their field of applications.Comment: 58 pages, 41 figure
Optimal Alignment Sensing of a Readout Mode Cleaner Cavity
Critically coupled resonant optical cavities are often used as mode cleaners
in optical systems to improve the signal to noise ratio (SNR) of a signal that
is encoded as an amplitude modulation of a laser beam. Achieving the best SNR
requires maintaining the alignment of the mode cleaner relative to the laser
beam on which the signal is encoded. An automatic alignment system which is
primarily sensitive to the carrier field component of the beam will not, in
general, provide optimal SNR. We present an approach that modifies traditional
dither alignment sensing by applying a large amplitude modulation on the signal
field, thereby producing error signals that are sensitive to the signal
sideband field alignment. When used in conjunction with alignment actuators,
this approach can improve the detected SNR; we demonstrate a factor of 3
improvement in the SNR of a kilometer-scale detector of the Laser
Interferometer Gravitational-wave Observatory. This approach can be generalized
to other types of alignment sensors
Performing Place: A Rhythmanalysis of the City of London
Through its focus on the City of London as a particular work sector and setting, this paper emphasizes the symbolic and material significance of place to understanding the lived experiences of power relations within organizational life. The socio-cultural and material aspects of the City are explored through an analysis of the rhythms of place, as well through interview data. Using a methodological approach based on Lefebvre’s Rhythmanalysis in order to develop an embodied, immersive sense of how the City is experienced as a workplace, the paper makes a methodological, empirical and theoretical contribution to an understanding of the way in which rhythms shape how place is performed. Using rhythmanalysis as a method, the paper shows the relationship between rhythms and the performances of place, foregrounding a subjective, embodied and experiential way of researching the places and spaces of organizing
- …