Texas Business Review, January 1976

The Business Situation in Texas; The Last Hundred Years; The Next Hundred Years; Electric Funds Transference: Development and Prospects; Texas Construction: Four Decades of ChangeBureau of Business Researc

X band Class-E amplifier design

Abstract only availableThe goal of this research is to design and implement an X band Class-E amplifier. This amplifier will be centered on an ideal switch but, specific characteristics of the chosen transistor will be taken into account. The steps taken that compose the design of this amplifier are as follows. The first step is to use standard equations, which describe the behavior of ideal Class-E amplifies, to solve for lumped element circuit parameters. Once ideal parameters have been found the next step is to simulate the ideal model adding in non-ideal transistor parameters and tuning circuit parameters to compensate for the non-ideal transistor. The lumped element circuit will then undergo a necessary impedance transformation stage to match the output of the amplifier to a standard 50 ohm load. The final step in this design process is to transform the lumped element circuit into a micro-strip equivalent circuit. After the design has been completed microwave simulation software will be used to verify the operation of the micro-strip circuit.College of Engineering Undergraduate Research Optio

A Search for Jovian Planets around Hot White Dwarfs

Current searches for extrasolar planets have concentrated on observing the reflex Doppler shift of solar-type stars. Little is known, however, about planetary systems around non-solar-type stars. We suggest a new method to extend planetary searches to hot white dwarfs. Near a hot white dwarf, the atmosphere of a Jovian planet will be photoionized and emit hydrogen recombination lines, which may be detected by high- dispersion spectroscopic observations. Multi-epoch monitoring can be used to distinguish between non-LTE stellar emission and planetary emission, and to establish the orbital parameters of the detected planets. In the future, high-precision astrometric measurements of the hot white dwarf will allow the masses of the detected planets to be determined. Searches for Jovian planets around hot white dwarfs will provide invaluable new insight on the development of planetary systems around stars more massive than the Sun and on how stellar evolution affects these systems. We present high-dispersion spectroscopic observations of the white dwarf Feige 34 to demonstrate the complexity and feasibility of the search method.Comment: 10 pages, 2 figures, accepted for publication in the ApJ Letter

The Inconvenient Militia Clause of the Second Amendment: Why the Supreme Court Declines to Resolve the Debate over the Rights to Bear Arms

There are sound public policy reasons why gun ownership by law abiding citizens in a free society should be protected. Good public policy, however, cannot be formulated as long as there remain fundamental misconceptions about the meaning and history of the Second Amendment of the U.S. Constitution and the law interpreting it. In August of 1994, an exasperated American Bar Association, finding itself unable to match the Gun Lobby\u27s publicity campaigns, pleaded for help from the legal profession to educate the American public about the meaning of the Second Amendment and the intent of the Constitutional Framers. Specifically, the ABA sought help in clarifying the fact that the United States Supreme Court and lower federal courts have consistently, uniformly held that the Second Amendment to the United States Constitution is related to a well regulated militia and that there are no federal constitutional decisions which preclude the regulation of firearms in private hands ... Even the American Civil Liberties Union, not an organization known to suffer perceived constitutional violations lightly, has tried valiantly, though largely in vain, to educate the American public that the Second Amendment is a collective rather than an individual right. The exasperation of the American Bar Association is understandable, and this article is a humble response to its plea

The Effects of Music on Muscle Fatigue and Strength in Individuals with Previous Knee Injuries

Music can be used during physical activity for a variety of ergogenic, psychological, and psychophysical benefits. Listening to one’s preferred genre of music has been found to optimize arousal and increase motivation during an exercise bout that can lead to performance improvements. Rehabilitation patients often struggle to adhere to their rehabilitation for a variety of reasons, including lack of enjoyment, lack of progress, or even increased pain or fatigue. Therefore, incorporating music into a rehabilitation setting could help patients improve their strength and reduce fatigue, thus improving rehabilitation adherence. PURPOSE: To examine the effects of music preference on muscle fatigue and strength in individuals who suffered a previous knee injury. METHODS: Males (n = 14) and females (n = 10) between the ages of 18 and 55 (M = 23.21, SD = 6.77) who previously had an ACL, meniscus, PCL, MCL, or LCL injury (with or without surgical intervention) between one but no more than 13 years ago participated in this study. A randomized crossover design was used with each participant completing three days of testing (no music, preferred music, and non-preferred music as determined via a questionnaire at initial visit) with each session occurring at least 48 hours apart. During every session, participants first warmed up on a cycle ergometer at 50 watts for five minutes before undergoing a Thortensson fatigue test via the Biodex dynamometer. Measures of quadriceps strength and quadriceps fatigue were collected. During the two music conditions, music was played via a speaker throughout both the warm-up and Thortensson fatigue test. RESULTS: One-way repeated measures ANOVAs were conducted to assess for differences in quadriceps fatigue and strength across all three conditions. No significant differences were found across conditions in quadriceps fatigue (F(2,46) = 0.682, p = 0.510, ηp2 = 0.029) or quadriceps strength (F(2,46) = 1.447, p = 0.246, ηp2 = 0.059). CONCLUSION: There was no difference in muscular fatigue or strength between the three conditions. Therefore, listening to one’s preferred music may not improve strength or reduce fatigue in a rehabilitation setting. Rehabilitation practitioners should consider that music may not be the most effective strategy to increase muscular strength or reduce fatigue in a rehabilitation setting and should explore other techniques that could help address these variables and improve rehabilitation adherence