Several experimental programs were conducted at the Pittsburgh Research Center to investigate the level of mine fire detection and alarm capability possible using state-of-the-art technology. These programs involved comparison of the response and alarm time of optical and ionization type smoke sensors to smoldering and flaming coal combustion in a smoke chamber. Coal combustion experiments conducted in the smoke chamber demonstrated that a CO concentration of 5 ppm above...
Thesis -- University of Florida; Vita; Bibliography: leaves 137-139
Additional Subjects: Electronic digital computers
Medical Reference Publication
On completion of this module the student will be able to: ? Adopt a systematic approach to fault diagnosis,as an introduction to the modules for individual equipment. ? Be aware of methods for locating broken wires, and faults in plugs and sockets. ? Test and replace a fuse with a suitable replacement. Task 8, ‘Fuse identification’, should be attempted on completion of this module.
As modern, high technology based diagnostic imaging is moving increasingly into therapeutic medicine, and molecular imaging is becoming daily routine, it is important to remember that thousands of hospitals and medical institutions world wide not even have possibilities to perform the most basic examinations. Today, few other areas of medicine experience such a rapidly growing gap between what might be technically possible, e.g., what can be done in highly developed, ric...
Government Reference Publication
Excerpt: The mention of specific products or companies does not constitute an endorsement by BDM, the U.S. Government, the Canadian Government, or the Australian Government. Use of the information contained in this publication shall be with the user’s understanding that neither BDM, nor the three Governments, by the inclusion or exclusion of any company in this document, provides any endorsement or opinion as to the included or excluded companies’ products, capabilities,...
Excerpt: Rate scalable video compression is appealing for low bit rate applications, such as video telephony and wireless communication, where bandwidth available to an application cannot be guaranteed. A technique known as Scalable Adaptive Motion Compensated Wavelet (SAMCoW) compression is described in this paper. SAMCoW is well suited for data rates less than 32 kbps. Several techniques to improve the subjective picture quality of SAMCoW are investigated. These includ...
Excerpt: This Section specifies the minimum standards for an approved Intrusion Detection System (IDS) when supplemental protection is required for TOP SECRET and SECRET material. The IDS shall be connected to, and monitored by, a central monitoring station. Alarm system installation shall conform to the requirements of this Section or to the standardss+ forth in DCID 1/21 (Physical Security Standards for Sensitive Compartmented Information Facilities). The CSA will appr...
Nutrition Reference Publication
Excerpt: The accurate diagnosis of aquatic animal diseases requires different levels of disease surveillance and data collection, ranging from farm-site observations through to the use of state-of-the-art diagnostic technology. Development of expertise at each level of diagnosis requires investment in training and infrastructure, with successive levels requiring more complex training and greater financial resources. Table 6.1 shows the investment required at the three di...
To prevent mine flires eaused by undercted arcing faults on coal mine dc trolley systems by using computerzed signature analysis techniques that distinguish legitimate loads form arcing faults...
Excerpt: Chapter 1 - Introduction The Computer Vision Laboratory at the University of Maryland has been designing and developing real time computer vision algorithms for visual surveillance systems. A visual surveillance system must be able to detect and track people under a wide variety of environmental and imaging conditions, and then must analyze their actions and interactions with one another and with objects in their environment to determine when “alerts” should be ...
Excerpt: For applications such as video surveillance and human computer interface, we propose an efficiently integrated method to detect and track faces. Various visualcues are combined to the algorithm: motion, skin color, global appearance and facialpat tern detection. The ICA (Independent Component Analysis)-SVM (Support Vector Machine) based pattern detection is performed on the candidate region extracted by motion, color and global appearance information. Simultaneo...
Excerpt: Structure-activity analysis is a powerful tool to study the relationship between chemicals and their biological effects. The elucidation of specific chemical features that directly or indirectly result in the expression of a biochemical or biological change can provide new insights into the mechanisms of action of the chemicals as well as the structure and function of the biological system. We have previously reported on the development of an innovative genetic ...
Excerpt: There are tradeoffs to enjoying ones day in the sun. The obvious pleasures of outdoor recreation come at the cost of accelerated aging of the skin, formation of cataracts and other damage to the eyes, and increased risk of skin cancers. The deadliest of the skin cancers, melanoma, has been specifically tied to recreational exposure, as during summertime sunbathing and gardening. Although fatal when allowed to spread, melanoma is easily treated when diagnosed ear...
Excerpt: Boundary extraction is a data representation problem: image features are segmented and approximated by a parametric curve or a sequence of model points. However, the use of classic Pattern Recognition methods in boundary detection is unusual when compared with more popular approaches, e.g., active contours. This can be partially explained by their inability to separate boundary edges from other image strokes. This paper presents modified versions of several clus...
Attributed to Marthens, Adolphus Frederic; Special Collections Leuba copy-The Walter and Martha Leuba Collection--Bequest,1988
Supported by Professors Edward Roberts and Roland Van Dierdonck
Technical Reference Publication
Introduction: To Stopwatch and Timer Calibrations. This document is a recommended practice guide for stopwatch and timer calibrations. It discusses the types of stopwatches and timers that require calibration, the specifications and tolerances of these devices, and the methods used to calibrate them. It also discusses measurement uncertainties and the process of establishing measurement traceability back to national and international standards.
Government Accountability Integrity Reliability Office Collection
Excerpt: GAO assists congressional decisionmakers in their deliberative process by furnishing analytical information on issues and options under consideration. Many diverse methodologies are needed to develop sound and timely answers to the questions that are posed by the Congress. To provide GAO evaluators with basic information about the more commonly used methodologies, GAO?s policy guidance includes documents such as methodology transfer papers and technical guidelines.