915 research outputs found
Warning Indicators, Terrorist Finances, and Terrorist Adaptation; Strategic Insights, v. 6, issue 1 (January 2005)
This article appeared in Strategic Insights, v.6, issue 1 (2005 January)Approved for public release; distribution is unlimited
Trafficking in women: Markets, networks and organized crime
Title VI National Resource Center Grant (P015A030066)unpublishednot peer reviewe
Laser Sharp
Mike Duncan is earning international attention for his research into gas-phase metals
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Galactose:PEGamine coated gold nanoparticles adhere to filopodia and cause extrinsic apoptosis
Ultra-small gold nanoparticles, surface functionalised with a 50:50 ratio of a thiolated α-Galactose derivative and a thiolated hexaethylene glycol amine, are toxic to HSC-3 oral squamous carcinoma cells. Differences in nanoparticle toxicity were found to be related to synthesis duration, with 1 h reaction nanoparticles being less toxic than 5 h reaction nanoparticles. Ligand density decreased with longer reaction time, although size, charge and ligand ratio remained similar. The concentration of sodium borohydride in the reaction decreased logarithmically over 5 h but remained within a concentration range sufficient to desorb weakly-bound ligands, possibly explaining the observed gradual decrease in ligand density. Nanoparticle toxicity was abrogated by inhibition of either caspase 3/7 or caspase 8, but not by inhibition of caspase 9, consistent with extrinsic apoptosis. Electron microscopic analysis of cellular uptake demonstrated predominantly cytoplasmic localization. However, when energy-dependent transport was inhibited, by lowering the temperature to 4ºC, a remarkable adhesion of nanoparticles to filopodia was observed. Inhibition of filopodial assembly with a fascin inhibitor prevented nanoparticle adhesion to HSC-3 cells at 4ºC, while fascin inhibition at 37ºC resulted in less cytoplasmic uptake. More adhesion to HSC-3 filopodia was seen with the higher toxicity 5 h reaction time nanoparticles than with the 1 h nanoparticles. By including a further two cell types (HaCaT keratinocytes and hCMEC/D3 endothelial cells), a pattern of increasing toxicity with filopodial binding of 5 h reaction nanoparticles became apparent
A Comparative Analysis of Operation Bluestone: A Specialist Rape Investigation Unit - Summary Report
The file attached to this record is the author's final version.This summary report sets out the findings of an evaluation into the performance of a specialist rape investigation unit and a non-specialist comparator
Individuals with low back pain: how do they view physical activity?
Background. Recent guidelines for those with acute low back pain have advocated early resumption of normal activity and increased physical activity. Little is known about the relationship between low back pain and physical activity, and on the impact of that relationship on the promotion of increased levels of physical activity within a general practice population.
Objectives. We aimed to explore associations between factors that influence changes in physical activity and the way individuals perceive and behave with their low back pain, and the impact of those perceptions and behaviour on physical activity.
Methods. Twenty-seven informants were chosen using a purposive sample from a larger group of individuals who, because of their low back trouble, had been referred by their GPs to a community-based, single-blind, randomized controlled trial (RCT) at the University of York, which is evaluating the effectiveness and cost-effectiveness of a progressive exercise programme. Fifty-four interviews were conducted with this subgroup of the RCT; four informants were interviewed once, 19 twice and four of them three times. Interviews were transcribed and analysed using manual and computer-aided approaches.
Results. Physical activity was perceived as (i) activities of daily living, (ii) activities causing breathlessness that they went out of the way to do and (iii) more competitive-type activity. The avoidance of physical activity and fear of pain returning were the two main factors directly associated with informants' backs and changes in physical activity. These two factors hindered increases in physical activity, even though the majority of informants believed strongly that being physically active helped ease their low back pain.
Conclusions. When advocating that individuals with acute low back pain return to or increase physical activity, it is important that clinicians identify avoidance of physical activity and/or fear of pain at the earliest stage in order to tailor advice and reassurance appropriately. If avoidance of activity and fear of pain is identified and clinicians want to encourage patients to take up and sustain increased physical activity, they should explore issues of fear of pain, and avoidance of and confidence to do physical activities, in addition to other factors influencing physical activity
The Evolution of Threat Networks in Latin America
The economic and political environments in Latin America have been advantageous for local, regional, and transnational threat networks. Specifically, technology, increased international trade and economic interdependence, heightened interest in natural resources for profit, synthetic drug production, economic disparities, corruption, impunity, and unstable political conditions have led to a complex web of opportunities that requires new, progressive ways to address criminal activities. The creativity of threat networks along with their entrepreneurial strategies have resulted in increasing power and influence. Despite efforts by the United States and some governments in Latin America to combat these networks, the everchanging global environment has worked in their favor. Indeed, some countries in Central and South America are in danger of transforming into what Jorge Chabat described as “criminally possessed states.” Furthermore, gangs in Central America, especially in Honduras where MS-13 has become more closely linked to drug trafficking, have reduced local extortion, become more aware of their nascent political power and have even engaged in rudimentary social welfare provision.https://digitalcommons.fiu.edu/jgi_research/1003/thumbnail.jp
Military Contingencies in Megacities and Sub-Megacities
Urbanization is one of the most important mega-trends of the 21st century. Consequently, the possibility of U.S. military involvement in a megacity or sub-megacity is an eventuality that cannot be ignored. After elucidating the nature of urbanization and developing a typology in terms of smart, fragile, and feral cities, we give consideration to the kinds of contingencies that the U.S. military, especially the Army, needs to think about and prepare for. Understanding the city as a complex system or organism is critical and provides the basis for changes in intelligence, recruitment, training, equipment, operations, and tactics.
One of the key takeaways is the need to understand the urban environment and the need to work with (instead of against) the flows and rhythms of a city. Without such an approach, the results of military involvement in such a formidable environment would likely be disastrous; with it, the prospects for success would at least be enhanced.https://press.armywarcollege.edu/monographs/1416/thumbnail.jp
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