55 research outputs found
Stiffness Change Effects on Structure Control Systems
This paper contains the results of a computer analysis performed on a two-dimensional model structure, in which the structure response was found under dynamic loading conditions. A structural dynamics program (BASIC) was modified to perform its analysis on a two-dimensional structure with a control system modelled into it. The modified program was then used to determine whether a change in the stiffness of the structure would cause the control algorithm to be ineffective for the structure. In light of the limited scope of the analysis (two-dimensional model with constant applied force on one story), the results indicate that a control algorithm, which dampens the adverse response of the structure under dynamic loading, will continue to be effective if there is a measurable (25%) increase or decrease in the stiffness of the structure
Market research & the ethics of big data
The term ‘big data’ has recently emerged to describe a range of technological and
commercial trends enabling the storage and analysis of huge amounts of customer data,
such as that generated by social networks and mobile devices. Much of the commercial
promise of big data is in the ability to generate valuable insights from collecting new
types and volumes of data in ways that were not previously economically viable. At the
same time a number of questions have been raised about the implications for individual
privacy. This paper explores key perspectives underlying the emergence of big data and
considers both the opportunities and ethical challenges raised for market research
Field, capital and the policing habitus: nderstanding Bourdieu through The NYPD’s post-9/11 counterterrorism practices
This article extends existing Bourdieusian theory in criminology and
security literature through examining the practices of the New York City
Police Department in the post-9/11 counterterrorism field. This article
makes several original contributions. First, it explores the resilient nature
of the policing habitus, extending Bourdieusian criminological findings
that habitus are entrenched and difficult to change. Second, this article
examines the way the resilient habitus drives subordinate factions to
displace dominant factions in a field’s established social hierarchy
through boundary-pushing practices, a concept previously unexamined in
Bourdieusian criminology. Drawing on original documentary analysis, this
article uses the illustrative example of the NYPD’s post-9/11
counterterrorism practices, exploring how it sought to displace the
existing social structure by using its aggressive policing habitus and an
infusion of ‘War on Terror’ capital to challenge the dominant position of
the FBI in the post-9/11 counterterrorism field. The NYPD’s habitus
driven counterterrorism practices were novel and unprecedented,
creating strain with both the FBI and local communities
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