Optical projector system Patent

Optical projector system for establishing optimum arrangement of instrument displays in aircraft, spacecraft, other vehicles, and industrial instrument console

Racial Inequality in the Valuation of Health Outcomes Expressed by the 1992 ACS Guidelines for Prostate Cancer Screening

In 1992, the American Cancer Society (ACS) recommended annual screening for prostate cancer for men 50 and older using PSA. In this article, I introduce a method to use race and age-specific PSA accuracy data to evaluate differences in the valuation of outcomes by race and age that were expressed by the ACS guidelines. Using this new method, it can be concluded that the guidelines implied a 4-fold greater valuation was assigned to screening young white males with prostate cancer than the value that was assigned to young black males with cancer. Future implementation of guidelines for screening and testing should recognize and rectify any social inequities that are expressed via their implementation

Input-output subroutine package UOM IOS FOR the IBM 7090/7094

Input-output subroutine package for IBM 7090/7094 computer monitoring system

Visual attitude orientation and alignment system

Active vehicle optical alignment aid and a passive vehicle three-dimensional alignment target ensure proper orientation and alignment plus control of the closure range and rate between two bodies, one in controlled motion and one at rest

Universal vortex-state Hall conductivity of YBa2Cu3O7 single crystals with differing correlated disorder

The vortex-state Hall conductivity ([sigma][sub]xy) of YBa2Cu3O7 single crystals in the anomalous-sign-reversal region is found to be independent of the density and orientation of the correlated disorder. After the anisotropic-to-isotropic scaling transformation is carried out, a universal scaled Hall conductivity [sigma][bar][sub]xy is obtained as a function of the reduced temperature (T/T[sub]c) and scaled magnetic field strength (H[bar]) for five samples with different densities and orientation of controlled defects. The transport scattering times {tau], derived from applying the model given by Feigel'man et al (Feigel'man M V, Geshkenbein V B, Larkin A I and Vinokur V M 1995 Pis. Zh. Eksp. Teor. Fiz. 62 811 (Engl. Transl. 1995 JETP Lett. 62 835)) to the universal Hall conductivity [sigma bar](T/T[sub]c, H[bar]), are consistent in magnitude with those derived from other measurements for quasiparticle scattering, and are much smaller than the thermal relaxation time of vortex displacement and than the vortex–defect interaction time. Our experimental results and analyses therefore suggest that the anomalous sign reversal in the vortex-state Hall conductivity is associated with the intrinsic properties of type-II superconductors, rather than extrinsic disorder effects

Optical projectors simulate human eyes to establish operator's field of view

Device projects visual pattern limits of the field of view of an operator as his eyes are directed at a given point on a control panel. The device, which consists of two projectors, provides instant evaluation of visual ability at a point on a panel

Leveraging the Cloud for Integrated Network Experimentation

The goal of this research is to determine the feasibility of performing integrated network experimentation using cloud services. This research uses performance metrics to compare computing architectures constructed in the cloud to architectures that run on traditional networks. If so, then cloud network architectures will display the same expected behavior as traditional network architectures, thus allowing the construction of networking testbeds at potentially substantial cost savings. Since the Amazon cloud does not support broadcast or multicast traffic, distributed applications face a challenge. Many distributed applications use broadcast or multicast to communicate real-time information. This research includes a case study for developing a distributed network application in the cloud which overcomes the restriction on broadcast and multicast traffic. During performance testing, the baseline network and cloud network configurations are provided statistically equivalent traffic workload. Metrics such as packet loss, delay, jitter and throughput are compared to determine relative performance. Analysis of the experimental results shows that in each case, the cloud network configurations performed at or above the performance level of the baseline network. Therefore, the public cloud infrastructure is suitable for performing integrated network experimentation. This research continues Project Everest\u27s efforts to leverage cloud services for network experimentation. Project Everest is a framework which aims to combine emulation and cloud infrastructure into a single testbed using the Amazon Elastic Compute Cloud (EC2). Their tests indicate satisfactory cloud performance, but they recommend testing cloud network performance under various workload. This research carries out those performance tests

MAMOS - A monitor system under IBSYS for the IBM 7090/7094

MAMOS - monitor system under IBM basic monitor for IBM 7090/7094 compute

Effects of lattice distortion and Jahn–Teller coupling on the magnetoresistance of La0.7Ca0.3MnO3 and La0.5Ca0.5CoO3 epitaxial films

Studies of La0.7Ca0.3MnO3 epitaxial films on substrates with a range of lattice constants reveal two dominant contributions to the occurrence of colossal negative magnetoresistance (CMR) in these manganites: at high temperatures (T → TC, TC being the Curie temperature), the magnetotransport properties are predominantly determined by the conduction of lattice polarons, while at low temperatures (T ≪ TC/, the residual negative magnetoresistance is correlated with the substrate-induced lattice distortion which incurs excess magnetic domain wall scattering. The importance of lattice polaron conduction associated with the presence of Jahn–Teller coupling in the manganites is further verified by comparing the manganites with epitaxial films of another ferromagnetic perovskite, La0.5Ca0.5CoO3. Regardless of the differences in the substrate-induced lattice distortion, the cobaltite films exhibit much smaller negative magnetoresistance, which may be attributed to the absence of Jahn–Teller coupling and the high electron mobility that prevents the formation of lattice polarons. We therefore suggest that lattice polaron conduction associated with the Jahn–Teller coupling is essential for the occurrence of CMR, and that lattice distortion further enhances the CMR effects in the manganites