2,340 research outputs found
Implementation and Development of Vehicle Tracking and Immobilization Technologies
Since the mid-1980s, limited use has been made of vehicle tracking using satellite communications to mitigate the security and safety risks created by the highway transportation of certain types of hazardous materials. However, vehicle-tracking technology applied to safety and security is increasingly being researched and piloted, and it has been the subject of several government reports and legislative mandates.
At the same time, the motor carrier industry has been investing in and implementing vehicle tracking, for a number of reasons, particularly the increase in efficiency achieved through better management of both personnel (drivers) and assets (trucks or, as they are known, tractors; cargo loads; and trailers).
While vehicle tracking and immobilization technologies can play a significant role in preventing truck-borne hazardous materials from being used as weapons against key targets, they are not a & ”silver bullet.” However, the experience of DTTS and the FMCSA and TSA pilot projects indicates that when these technologies are combined with other security measures, and when the information they provide is used in conjunction with information supplied outside of the tracking system, they can provide defensive value to any effort to protect assets from attacks using hazmat as a weapon.
This report is a sister publication to MTI Report 09-03, Potential Terrorist Uses of Highway-Borne Hazardous Materials. That publication was created in response to the Department of Homeland Security´s request that the Mineta Transportation Institute´s National Transportation Security Center of Excellence provide research and insights regarding the security risks created by the highway transportation of hazardous materials
Klipsun Magazine, 1973, Volume 03, Issue 06 - September/October
https://cedar.wwu.edu/klipsun_magazine/1014/thumbnail.jp
Reflectionless Sharp Bends and Corners in Waveguides Using Epsilon-Near-Zero Effects
Following our recent theoretical and experimental results that show how
zero-permittivity metamaterials may provide anomalous tunneling and energy
squeezing through ultranarrow waveguide channels, here we report an
experimental investigation of the bending features relative to this
counterintuitive resonant effect. We generate the required effectively-zero
permittivity using a waveguide operating at the cut-off of its dominant mode,
and we show how sharp and narrow bends may be inserted within the propagation
channel without causing any sensible reflection or loss.Comment: 13 pages, 6 figure
COMBINED MOVEMENTS IN THE CERVICAL SPINE (C2-7) THEIR VALUE IN EXAMINATION AND TECHNIQUE CHOICE
Treatment by passive movement has been shown to be a useful method when compared to other treatment procedures (Edwards 1969). It is however still empirical in nature. Part of the reason for this is because definite movement patterns related to pathology are still unclear. This can produce confusion when one is selecting a technique as very often there appears to be no relationship between the restricted movement the patient may exhibit and the technique chosen. It is suggested that detailed examination related to the combining of different movements will allow a more accurate choice of technique to be made. Under these circumstances the therapist should be able to predict the effect of a treatment technique. Progression of a treatment is also more logical as it depends on progressing the position of the joint to the position which is most painfull as the movement pattern improves, rather than increasing the vigour of the technique
A revised and updated Odonata checklist of Samoa (Insecta: Odonata)
Odonata records of the Samoan Archipelago are updated and an updated checklist provided. It is part of an ongoing assessment of the fauna, taxonomy and distributionof the Pacific island dragonflies. The checklist follows recent reviews published/prepared about the Solomon Islands, New Caledonia, Fiji and Kingdom of Tonga.
This study draws on recent dragonfly records following general insect surveys spanning 2008-2012 funded by Critical Ecosystem Partnership Fund (CEPF) via Conserva-tion International (CI) to the authors and to Secretariat Pacific Regional Environment Program (SPREP) and also by funding from Japan International Cooperation Agency (JICA). Other unpublished data from Samoan Archipelago and Niue are included as well. All, but one, of the newly collected Odonata species are widespread within the Pacific region. Hemicordulia cupricoloris the only species from the recent collections which is endemic to Samoa, previously reported for Savai'i and Upolu Islands. It has neverbeen confirmed since its original description in 1927. The new study shows the species as an inhabitant of high altitude zones of Savai'i. It is recommended inland areas of Savai'i and other islands within the Samoan Archipelago should be targeted in further field studies
Integrating modern business methodologies and behavior factors to better apply information technology security practices within the organization
Often in today\u27s business environments, data collected through great care and effort never transforms into actionable information and intelligence because organizations lack the tools or skills to apply modern practices. Too many well developed tools exist but are overlooked. Too many projects fail to account for their organization\u27s social and cultural attributes. The result is information being discarded because it cannot be effectively leveraged.
This work examines a collection of business tools and technologies, goals, and behaviors in the context of how they affect information security policy and programs within the business
Tuning the generalized Hybrid Monte Carlo algorithm
We discuss the analytic computation of autocorrelation functions for the
generalized Hybrid Monte Carlo algorithm applied to free field theory and
compare the results with numerical results for the spin model in two
dimensions. We explain how the dynamical critical exponent for some
operators may be reduced from two to one by tuning the amount of randomness
introduced by the updating procedure, and why critical slowing down is not a
problem for other operators.Comment: 4 pages, to be published in the Proceedings of Lattice 95, uuencoded
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The influence of matrix viscoelasticity on the rheology of polymer blends
We examine the effects of matrix phase viscoelasticity on the rheological modeling of polymer blends with a droplet morphology. Two contravariant, second-rank tensor variables are adopted along with the translational momentum density of the fluid to account for viscoelasticity of the matrix phase and the ellipsoidal droplet shapes. The first microstructural variable is a conformation tensor describing the average extension and orientation of the molecules in the matrix phase. The other microstructural variable is a configuration tensor to account for the average shape and orientation of constant-volume droplets. A Hamiltonian framework of non-equilibrium thermodynamics is then adopted to derive a set of continuum equations for the system variables. This set of equations accounts for local conformational changes of the matrix molecules due to droplet deformation and vice versa. The model is intended for dilute blends of both oblate and prolate droplets, and droplet breakup and coalescence are not taken into account. Only the matrix phase is considered as viscoelastic; i.e., the droplets are assumed to be Newtonian. The model equations are solved for various types of homogeneous deformations, and microstructure/rheology relationships are discussed for transient and steady-state conditions. A comparison with other constrained-volume rheological models and experimental data is made as wel
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