Program to enhance tae transfer of new technology to potential industrial, governmental, and academic users in the oklahoma area Quarterly status report, 1 Jul. - 30 Sep. 1967

Aerospace technology applications to industr

Construction of a profile of the existing economic structure of the region surrounding the Southeastern State College. Program to enhance the transfer of new technology to potential industrial, governmental Quarterly status report, 1 Jan. - 31 Mar.

Technology utilization program for use in regional economic profil

Technology utilization in a non-urban region - The first four years of an experiment Final report

Technology utilization by small industrial plant

Program to enhance the transfer of new technology to potential industrial, governmental, and academic users in the Oklahoma areas Quarterly status report, 1 Apr. - 30 Jun. 1967

Technology utilization by government, industry, and students in Oklahoma are

Are gravitational waves from giant magnetar flares observable?

Are giant flares in magnetars viable sources of gravitational radiation? Few theoretical studies have been concerned with this problem, with the small number using either highly idealized models or assuming a magnetic field orders of magnitude beyond what is supported by observations. We perform nonlinear general-relativistic magnetohydrodynamics simulations of large-scale hydromagnetic instabilities in magnetar models. We utilise these models to find gravitational wave emissions over a wide range of energies, from 10^40 to 10^47 erg. This allows us to derive a systematic relationship between the surface field strength and the gravitational wave strain, which we find to be highly nonlinear. In particular, for typical magnetar fields of a few times 10^15 G, we conclude that a direct observation of f-modes excited by global magnetic field reconfigurations is unlikely with present or near-future gravitational wave observatories, though we also discuss the possibility that modes in a low-frequency band up to 100 Hz could be sufficiently excited to be relevant for observation.Comment: 4 pages, 3 figures. Further information can be found at http://www.physik.uni-tuebingen.de/institute/astronomie-astrophysik/institut/theoretische-astrophysik/forschung.htm

The runaway instability in general relativistic accretion disks

When an accretion disk falls prey to the runaway instability, a large portion of its mass is devoured by the black hole within a few dynamical times. Despite decades of effort, it is still unclear under what conditions such an instability can occur. The technically most advanced relativistic simulations to date were unable to find a clear sign for the onset of the instability. In this work, we present three-dimensional relativistic hydrodynamics simulations of accretion disks around black holes in dynamical space-time. We focus on the configurations that are expected to be particularly prone to the development of this instability. We demonstrate, for the first time, that the fully self-consistent general relativistic evolution does indeed produce a runaway instability.Comment: 5 pages, 3 figures, minor corrections to match published version in MNRAS, +link to animatio

THE IMPACT OF ORGANIZATIONAL CONFLICT ON THE SECURITY IMPERATIVE FOR IMPLANTABLE MEDICAL DEVICES: A CASE STUDY APPROACH

Patient safety should be the primary concern in implantable medical devices (IMD). The growing threat of security attacks on networkable IMDs is an obvious risk to patient safety, because it can involve injury or death to the patient. In the case of insulin pumps, vulnerabilities are well-documented and security frameworks have been recommended. In addition, several government bodies have issued multiple advisories about security threats to IMDs. Furthermore, there is an ISO standards initiative to promote secure design for insulin pumps and associated devices. However, device manufacturers look to the U.S. Food and Drug Administration (FDA) for guidance during the pre-market approval process, and no standards are being enforced. To date, a convincing cost/benefit analysis of the security issues has remained elusive. Structuration theory has been used as a lens to understand the organizational process and the consequences of their choices

Time-division SQUID multiplexers with reduced sensitivity to external magnetic fields

Time-division SQUID multiplexers are used in many applications that require exquisite control of systematic error. One potential source of systematic error is the pickup of external magnetic fields in the multiplexer. We present measurements of the field sensitivity figure of merit, effective area, for both the first stage and second stage SQUID amplifiers in three NIST SQUID multiplexer designs. These designs include a new variety with improved gradiometry that significantly reduces the effective area of both the first and second stage SQUID amplifiers.Comment: 4 pages, 7 figures. Submitted for publication in the IEEE Transactions on Applied Superconductivity, August 201