Data Acquisition

Rapid Detection of Herpes Viruses for Clinical Applications

There are eight herpes viruses that infect humans, causing a wide range of diseases resulting in considerable morbidity and associated costs. Varicella zoster virus (VZV) is a human herpes virus that causes chickenpox in children and shingles in adults. Approximately 1,000,000 new cases of shingles occur each year; post-herpetic neuralgia (PHN) follows shingles in 100,000 to 200,000 people annually. PHN is characterized by debilitating, nearly unbearable pain for weeks, months, and even years. The onset of shingles is characterized by pain, followed by the zoster rash, leading to blisters and severe pain. The problem is that in the early stages, shingles can be difficult to diagnose; chickenpox in adults can be equally difficult to diagnose. As a result, both diseases can be misdiagnosed (false positive/negative).

Posted in: Bio-Medical, Medical, Data Acquisition, Briefs

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Integrating a Microwave Radiometer into Radar Hardware for Simultaneous Data Collection Between the Instruments

Electronics are shared between the instruments. The conventional method for integrating a radiometer into radar hardware is to share the RF front end between the instruments, and to have separate IF receivers that take data at separate times. Alternatively, the radar and radiometer could share the antenna through the use of a diplexer, but have completely independent receivers. This novel method shares the radar’s RF electronics and digital receiver with t he radiometer, while allowing for simultaneous operation of the ra da r and radiometer.

Posted in: Physical Sciences, Data Acquisition, Briefs, TSP

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Cryogenic Liquid Sample Acquisition System for Remote Space Applications

There is a need to acquire autonomously cryogenic hydrocarbon liquid sample from remote planetary locations such as the lakes of Titan for instruments such as mass spectrometers. There are several problems that had to be solved relative to collecting the right amount of cryogenic liquid sample into a warmer spacecraft, such as not allowing the sample to boil off or fractionate too early; controlling the intermediate and final pressures within carefully designed volumes; designing for various particulates and viscosities; designing to thermal, mass, and power-limited spacecraft interfaces; and reducing risk. Prior art inlets for similar instruments in spaceflight were designed primarily for atmospheric gas sampling and are not useful for this front-end application.

Posted in: Physical Sciences, Data Acquisition, Briefs, TSP

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Spatial Statistical Data Fusion (SSDF)

The approach models the spatial covariance function of the underlying geophysical field using linear combinations of multi-resolution spatial basis functions of low dimensionality. As remote sensing for scientific purposes has transitioned from an experimental technology to an operational one, the selection of instruments has become more coordinated, so that the scientific community can exploit complementary measurements. However, technological and scientific heterogeneity across devices means that the statistical characteristics of the data they collect are different. The challenge addressed here is how to combine heterogeneous remote sensing data sets in a way that yields optimal statistical estimates of the underlying geophysical field, and provides rigorous uncertainty measures for those estimates. Different remote sensing data sets may have different spatial resolutions, different measurement error biases and variances, and other disparate characteristics.

Posted in: Information Sciences, Electronics & Computers, Data Acquisition, Briefs

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SFDC/DHR Interface Systems Add Parametric Data to Support Medical Manufacturers

Access to parametric data allows OEMs to monitor device performance throughout production, and is particularly useful for new product introduction. In this era of ever more stringent FDA oversight and regulations, the responsibility for vigilance falls on medical manufacturers and their manufacturing partners or customers. Those companies that support a “best practices” medical manufacturing environment often rely on a shop floor data collection (SFDC) system that embeds attributive data in each unit’s device history record (DHR). More recent advances allow for parametric, or performance, data to be captured as well, so that not only can the medical device’s progress through the manufacturing process be monitored, the device’s quality of performance at each stage can also be assessed. Access to this data facilitates timely decision- making, ensuring the highest quality medical product, and saving money due to reduced downtime, scrap and/or repair work.

Posted in: Bio-Medical, Manufacturing & Prototyping, FDA Compliance/Regulatory Affairs, Medical, Data Acquisition, Briefs, MDB

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