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The Enemy is Still Below: The Global Diffusion of Submarines and Related Technology
The spread of submarines and related technology is an end product of globalization. Globalization is not a new story. By one estimate, our ancestors first crossed out of Africa roughly 80,000 years ago, and began the process that they now call globalization. With the dispersion of people around the world came the development of culture and civilization as well as the spread of ideas, goods, and technology. The process of globalization then is a long-standing one, not an innovation of the late 20th and early 21st centuries. Over the millennia, this process has been an uneven one. Globalization has often cuased great disruptions even to the societies that initiated various innovations in culture and civilization, including science and technology. Indeed, many cultures and civilizations have disappeared while some regions failed to advance as rapidly as others, so the process of globalization is not just one of continuing progress. Globalization in the current era seems to be penetrating the most remote corners of the world at a remarkable rate as a result of advances in science and technology, particularly information technology. The diffusion of science and technology is not necessarily a benign development. It could increase the potential for a global …
Date:
June 5, 2012
Creator:
Weiss, K G
Object Type:
Report
System:
The UNT Digital Library
Disaster Unemployment Assistance (DUA)
Report that contains information on how to ascertain if an individual is eligible for Disaster Unemployment Assistance (DUA) benefits.
Date:
September 5, 2012
Creator:
Whittaker, Julie M.
Object Type:
Report
System:
The UNT Digital Library
Observation of Laser Induced Magnetization Dynamics in Co/Pd Multilayers with Coherent X-ray Scattering
We report on time-resolved coherent x-ray scattering experiments of laser induced magnetization dynamics in Co/Pd multilayers with a high repetition rate optical pump x-ray probe setup. Starting from a multi-domain ground state, the magnetization is uniformly reduced after excitation by an intense 50 fs laser pulse. Using the normalized time correlation, we study the magnetization recovery on a picosecond timescale. The dynamic scattering intensity is separated into an elastic portion at length scales above 65 nm which retains memory of the initial domain magnetization, and a fluctuating portion at smaller length scales corresponding to domain boundary motion during recovery.
Date:
April 5, 2012
Creator:
Wu, Benny
Object Type:
Article
System:
The UNT Digital Library
Recent Advances and New Techniques in Visualization of Ultra-short Relativistic Electron Bunches
Ultrashort electron bunches with rms length of {approx} 1 femtosecond (fs) can be used to generate ultrashort x-ray pulses in FELs that may open up many new regimes in ultrafast sciences. It is also envisioned that ultrashort electron bunches may excite {approx}TeV/m wake fields for plasma wake field acceleration and high field physics studies. Recent success of using 20 pC electron beam to drive an x-ray FEL at LCLS has stimulated world-wide interests in using low charge beam (1 {approx} 20 pC) to generate ultrashort x-ray pulses (0.1 fs {approx} 10 fs) in FELs. Accurate measurement of the length (preferably the temporal profile) of the ultrashort electron bunch is essential for understanding the physics associated with the bunch compression and transportation. However, the shorter and shorter electron bunch greatly challenges the present beam diagnostic methods. In this paper we review the recent advances in the measurement of ultra-short electron bunches. We will focus on several techniques and their variants that provide the state-of-the-art temporal resolution. Methods to further improve the resolution of these techniques and the promise to break the 1 fs time barrier is discussed. We review recent advances in the measurement of ultrashort relativistic electron bunches. We will …
Date:
June 5, 2012
Creator:
Xiang, Dao
Object Type:
Article
System:
The UNT Digital Library
Multi-Scale Mass Transfer Processes Controlling Natural Attenuation and Engineered Remediation: An IFRC Focused on Hanford’s 300 Area Uranium Plume January 2011 to January 2012
The Integrated Field Research Challenge (IFRC) at the Hanford Site 300 Area uranium (U) plume addresses multi-scale mass transfer processes in a complex subsurface biogeochemical setting where groundwater and riverwater interact. A series of forefront science questions on reactive mass transfer motivates research. These questions relate to the effect of spatial heterogeneities; the importance of scale; coupled interactions between biogeochemical, hydrologic, and mass transfer processes; and measurements and approaches needed to characterize and model a mass-transfer dominated biogeochemical system. The project was initiated in February 2007, with CY 2007, CY 2008, CY 2009, and CY 2010 progress summarized in preceding reports. A project peer review was held in March 2010, and the IFRC project acted upon all suggestions and recommendations made in consequence by reviewers and SBR/DOE. These responses have included the development of 'Modeling' and 'Well-Field Mitigation' plans that are now posted on the Hanford IFRC web-site, and modifications to the IFRC well-field completed in CY 2011. The site has 35 instrumented wells, and an extensive monitoring system. It includes a deep borehole for microbiologic and biogeochemical research that sampled the entire thickness of the unconfined 300 A aquifer. Significant, impactful progress has been made in CY 2011 including: …
Date:
March 5, 2012
Creator:
Zachara, John M.; Bjornstad, Bruce N.; Christensen, John N.; Conrad, Mark S.; Fredrickson, Jim K.; Freshley, Mark D. et al.
Object Type:
Report
System:
The UNT Digital Library
Ab-initio calculation of optical properties of wurtzitic In_x Ga_1x N and In_x Al_1x N alloys including excitonic effects
None
Date:
September 5, 2012
Creator:
de Carvalho, L C; Schleife, A; Furthmueller, J & Bechstedt, F
Object Type:
Article
System:
The UNT Digital Library
Medicare Advantage Risk Adjustment and Risk Adjustment Data Validation Audits
None
Date:
March 5, 2012
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Mental Health Parity and Mandated Coverage of Mental Health and Substance Use Disorder Services After the ACA
None
Date:
January 5, 2012
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Miscellaneous Tariff Bills: Overview and Issues for Congress
None
Date:
November 5, 2012
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The National Telecommunications and Information Administration (NTIA): Policies, Programs, and Funding
None
Date:
January 5, 2012
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Regulation of Broadcast Indecency: Background and Legal Analysis
None
Date:
April 5, 2012
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Retirement Benefits for Members of Congress
None
Date:
January 5, 2012
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Trade Adjustment Assistance for Farmers
None
Date:
September 5, 2012
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library