Power spectrum analysis of staggered quadriphase-shift-keyed signals

Mathematical analysis of power spectrum of outputs from high-reliability communication system is used to determine system bandwidth. Analysis provides mathematical relationships of signal power spectrum at output of hard limiter for any type of baseband pulse input subjected only to output parameter constraints

Ring Rust

The world of professional wrestling, or in the case of Ring Rust, semi-professional wrestling, houses its own culture, and its own sense of family and identity. The two chapters presented here are part of the larger work set in this world and told from four perspectives: Brooks Jack Raptor Murphy, star of the Rustbelt Wrestling Alliance Vivian Murphy, his estranged sister Gunnar The Swedish Storm Olsen, whose career is intertwined with Jack\u27s and Maxine Hunter, local wrestling blogger. Though only Brooks and Vivian are represented in this excerpt, the lives of all four of these characters intertwine. The relationship between the siblings affects the choices Jack Raptor makes in the ring, changing the course of Gunnar\u27s career, and causes Max to reexamine the relationship she has with Jack--a man she never even calls by his real name. The violence, spectacle, and voyeurism seep into each one\u27s mind as they question their identity and their place in, out, and around the rin

Semiconductor Noise

Contains reports on four research projects

SUGGESTIONS FOR CONTROLLING ROSETTE, INSECTS AND DISEASES ON COMMERCIAL PECANS.

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The Growing Necessity for Continuing Education: The Short Course Option

Continuing education is a critical issue in the workplace. Rapid change, the emergence of new technology, and the lack of trained individuals make continuing education an imperative for employers. The desire for individual growth and marketability make it an imperative for the employee also. While there are many options for continuing education, an increasingly popular vehicle is the short course. Time, cost efficiency and instruction by those experienced in real industrial practice are key factors in the success of this educational format. Over the past couple of decades, short course offerings and the number and type of sponsoring organizations have grown significantly. Within the scientific community, courses in basic disciplines (e.g., materials characterization), emergent technologies (e.g., Micro-Electro- Mechanical Systems), equipment operation (e.g., electron microscopes) and even business practices (e.g., ES&H, proposal writing) have emerged and are taught by universities, technical societies and equipment manufacturers. Short course offerings and formats are evolving. Presently, it is possible to find series of courses which define specific curricula. These curricula set the stage for new developments in the future, including increased certification and licensing (e.g., technologists). Along with such certifications will come the need for accreditation. Who will offer such programs, and especially, who will accredit them are significant questions. Perhaps the most dramatic changes will occur with the integration of advanced information technology. While satellite-based remote offerings are available, the use of the web for educating a dispersed group is just beginning to emerge. In its simplest forms, this offers little advantage over a video or a real-time satellite course, but the eventual emergence of tele-operation of experimental equipment will revolutionize remote teaching

Dam Breach Analysis for Urbanizing Basins

Proceedings of the 2007 Georgia Water Resources Conference, March 27-29, 2007, Athens, Georgia.Development downstream of old and in many cases deficient, dams is responsible for a growing concern within communities that are transitioning from a rural to suburban environment. There are instances of permitted development being constructed in the shadow of a dam embankment without regard to the potential consequences from a dam failure. Loss of life is a real and sobering risk if a home is built in a potential dam breach zone. In Georgia, many of the dams in formerly rural areas do not fall under the regulatory oversight of the Georgia Safe Dams Program simply because they are smaller than the minimum size necessary by law to bring them into the Program. This does not diminish their potential for causing damage in the event of a breach. It is therefore imperative for development to account for the potential breach zone of even the smallest dams if they present a potential threat to downstream lives and structures. However, many breach zone delineation models are cumbersome and difficult to use, even for the most experienced modelers. It is therefore expensive to contract for that work, and as a result, modeling is often omitted. If a breach zone is delineated by a rough approximation, there is the potential to remove from development projects a substantial, and probably overestimated, portion of the usable land, thereby unnecessarily reducing the investment return for the developer. GIS and HEC-RAS offer a cost-effective and quick method to delineate a reasonable and effective potential dam breach zone. Through the use of a set of simple, but effective techniques, a breach zone can be defined for a reasonable cost that will protect lives and property, but not unduly impact the investment return potential for the development.Sponsored and Organized by: U.S. Geological Survey, Georgia Department of Natural Resources, Natural Resources Conservation Service, The University of Georgia, Georgia State University, Georgia Institute of TechnologyThis book was published by the Institute of Ecology, The University of Georgia, Athens, Georgia 30602-2202. The views and statements advanced in this publication are solely those of the authors and do not represent official views or policies of The University of Georgia, the U.S. Geological Survey, the Georgia Water Research Institute as authorized by the Water Resources Research Act of 1990 (P.L. 101-397) or the other conference sponsors

Physical Electronics

Contains research objectives and reports on four research projects

Eroding Potentiometers

Eroding potentiometers have been devised for measuring the time-dependent positions of char fronts advancing through layers of insulating material subject to intense heating from one side. In the original application, the material layers of interest are thermal insulators in rocket motors and the heat comes from firing of the motors, but the principle of operation is equally applicable to other insulating materials subject to intense heating (e.g., ablative fire-retardant materials). Measuring the thickness decrement of propellant (in hybrid motors in particular) is another possible application of this transducer. Telemetry informs mission control of the propellant left after each burn. An eroding potentiometer could be characterized, more precisely, as an eroding two-wire resistor. It includes a twisted pair of thin, insulated wires oriented along the thickness of, and embedded in, the layer of thermal-insulation material to be tested (see figure). The electrical insulation material on the wires should be one for which the charring temperature is about the same as (or perhaps slightly less than) that of the thermal- insulation material to be tested. In the original rocket-motor application, the wires have a diameter of 0.003 in. (.0.08 mm), are made of manganin, and are coated with polyimide for electrical insulation. Outside the thermal insulation on the cold side, the wire leads are connected to a Wheatstone bridge circuit for measurement of electrical resistance change

Clinical Outcomes of a Large-Scale, Partnership-Based Regional Food Prescription Program: Results of a Quasi-Experimental Study

BACKGROUND: Food prescription programs are gaining interest from funders, policy makers, and healthcare payers as a way to provide value-based care. A small body of research suggests that such programs effectively impact health outcomes; however, the quality of existing studies is variable, and most studies use small samples. This study attempts to address these gaps by utilizing a quasi-experimental design with non-equivalent controls, to evaluate clinical outcomes among participants enrolled in a food prescription program implemented at scale. METHODS: We completed a secondary analysis of participant enrollment and utilization data collected between May 2018 and March 2021, by the Houston Food Bank as part of its multi-institution food prescription program. Enrollment data was obtained from 16 health care partners and redemption data from across 40 food pantries in Houston, Texas. Our objective was to assess if program participation impacted multiple cardio-metabolic markers. Exposure was defined as any visit to a food pantry after receipt of prescription. Linear and logistic regression models were used to estimate change in outcomes by exposure status and number of food pantry visits. RESULTS: Exposed patients experienced a -0.28% (p = 0.007) greater change in HbA1c than unexposed patients, over six months. Differences across exposure categories were seen with systolic blood pressure (-3.2, p \u3c 0.001) and diastolic blood pressure (-2.5, p = 0.028), over four months. The odds of any decline in HbA1c (OR = 1.06 per visit, p \u3c 0.001) and clinically meaningful decline in HbA1c (OR = 1.04 per visit, p = 0.007) showed a linear association with visit frequency. CONCLUSIONS: Our study of a large food prescription program involving multiple health care and food pantry sites provides robust evidence of a modest decline in HbA1c levels among participants. These results confirm that food prescription programs can continue to be effective at scale, and portend well for institutionalization of such programs