38 research outputs found
Experimental Determination of Neutron Room Background at the NPI Cyclotron U-120M
No full textDuring the operation of external neutron generators of the Nuclear Physics Institute of The Academy of Sciences of the Czech Republic, the neutron room background is produced in cyclotron hall. To assess this effect, the neutron room background was measured using the activation method of dosimetry foils. To unfold the background spectrum from the set of measured reaction rates, the method of spectrum description by the special analytical function was employed
Embeddedness as Condition and Strategy in Contemporary Art and Cultural Production
No full textThis thesis examines the concept of ‘embeddedness’ as condition and strategy in contemporary art and cultural production. Identifying embeddedness as a motif of contextual proximity and a strategy in contemporary art, the thesis proposes immediacy to be the result of intrinsic mediation. The project’s main concern is how embeddedness is contextualised by the current conditions that authors and cultural producers engage with. The primary question is whether and how embeddedness can convey a critical relation to the mediation that it undertakes. These concerns inform and arise from my work as an artist, and my participation in events, some of which I organise. The project claims that embeddedness in art is a critical condition and an editorial concept or a strategic plan that can be set up by the artist.
The investigation begins by looking at conditions of embeddedness by focusing on concepts of subjectivity and by elaborating strategies that I call ‘auto-direction’. For example, concepts of subjectivity are taken up in relation to Richard Serra’s video Boomerang (1974), in which the performer Nancy Holt reflects on her own spoken words, which are fed back with a short delay via microphone and headphones into her ears. Auto-direction, introduced with the example of Steven Spielberg’s initiative of a video diary exchange project between Israeli and Palestinian children, describes the activity of the producer, who self-directs his situated presence. Taking up idioms of embeddedness from artists like Phil Collins, Christian Jankowski and Erik van Lieshout the project examines embeddedness through a comparative analysis between contemporary art, visual culture, media theory, sociology, art theory, psychoanalysis and philosophy. These practices lead to an identification of embeddedness as an author’s immanent exposure, a claim taken up through analysis of theoretical texts and literature by Rosalind Krauss, Jacques Lacan, Jacques Derrida, Gregory Bateson, Hal Foster, Bernard Williams and Alfred North Whitehead
Astrophysical S factor and reaction rate of
No full textAbstract. Low energy proton capture cross sections on heavy isotopes are necessary for a better understanding of the astrophysical p-process. There are around 35 proton-rich stable isotopes between 74S e and 196Hg which are bypassed by the s- and r- processes. These are commonly referred as p-nuclei whose origin is still not completely understood. In the present study, proton capture reactions are studied on Mo isotopes at astrophysically relevant energies using nuclear modular code TALYS. Astrophysical S factor and reaction rates are also calculated inside a core-collapse supernova. The obtained results are compared with the literature data taken from EXFOR data library. In addition, the effect of different combinations of the nuclear input parameters entering the stellar reaction rate have been investigated
Narrative Manipulation of Images from the Iraq War
No full textMy personal feeling is that citizens of the democratic societies should undertake a
course in intellectual self-defence to protect themselves from manipulation and
control. (Noam Chomsky, 1989a)
This paper is offered in the spirit of Noam Chomsky’s plea that everyone
should undertake a course in Intellectual Self-Defence. Welcome then to
ISD101. We will begin with the observation that anyone in the UK who
watched the ‘breaking news’ coverage of the second Gulf war with Iraq, in
March 2003, could not have helped noticing that they were often watching live
coverage from a battle zone in Iraq, ie. unfiltered, unedited and uncensored
images direct from Iraq. On first reflection, this would seem to contradict a key
feature of Herman and Chomsky’s (1988) well known Propaganda Model -
that such coverage needed to be heavily filtered and controlled. I will argue
that in this new era of 24 hour breaking news it is no longer possible to control
broadcast images, but it would seem that with appropriate media briefings the
meanings can be ‘fixed’. I therefore propose an expansion of the propaganda
model, which incorporates Stuart Hall’s notion of fixing the meaning. This is
supported by an analysis of the narrative manipulation of images from the Iraq
war over a seven-day period, early in the conflict. This analysis supports my
claim that it is not the images that we see that matters, but it is what we are told
that they mean, that really does matter. This has obvious implications for
understanding the inter-relationship between narrative, memory and
knowledge
Measurement of alpha-induced reaction cross-sections for Zn with detailed covariance analysis
No full textThe production cross-section of Ge, Ge, Zn and Ga
radioisotopes from alpha-induced nuclear reaction with Zn have been
measured using the stacked foil activation technique followed by the off-line
-ray spectroscopy in the incident alpha energy range 14-37 MeV. The
obtained nuclear reaction cross-sections are compared with previous
experimental data available in the EXFOR data library, evaluated nuclear data
from TENDL-2019 and theoretical results, calculated using TALYS nuclear
reaction code. We have also performed the detailed uncertainty analysis for
these nuclear reactions and their respective correlation metrics are presented.
Since -induced reactions are important in nuclear medicine and
developing the nuclear reaction codes so needful corrections related to the
coincidence summing factor and the geometric factor have been considered during
the data analysis in the present study
A study of non-elastic reaction rates for the ADS materials in the environment of spallation neutrons produced by 1.6GeV d-beam
No full text
