Say You\u27ll Be My Lady, Dinah, Do!

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Remote sensing of effects of land use practices on water quality

An intensive study was conducted to determine the utility of manual densitometry and color additive viewing of aircraft and LANDSAT transparencies for monitoring land use and land use change. The relationship between land use and selected water quality parameters was also evaluated. Six watersheds located in the Cumberland Plateau region of eastern Kentucky comprised the study area for the project. Land uses present within the study area were reclaimed surface mining and forestry. Fertilization of one of the forested watersheds also occurred during the study period

Effect of nose bluntness and afterbody shape on aerodynamic characteristics of a monoplanar missile concept with bodies of circular and elliptical cross sections at a Mach number of 2.50

The tests were performed at a Mach number of 2.50 and at angles of attack from about -4 deg to 32 deg. The results indicate that increasing nose bluntness increases zero lift drag and decreases both the maximum lift-drag ratio and the level of directional stability. The center of pressure generally moves forward with increasing nose size; however, small nose radii on the modified elliptical configurations move the center of pressure rearward. The circular bodied configurations exhibit the greatest longitudinal stability and the least directional stability. Concepts with the variable geometry afterbody contour display the most directional stability and the greatest zero lift drag

Stability and control characteristics at Mach numbers from 0.20 to 4.63 of a cruciform air-to-air missile with triangular canard controls and a trapezoidal wing

Investigations have been conducted in the Langley 8-foot transonic pressure tunnel and the Langley Unitary Plan wind tunnel at Mach numbers from 0.20 to 4.63 to determine the stability and control characteristics of a cruciform air-to-air missile with triangular canard controls and a trapezoidal wing. The results indicate that canards are effective in producing pitching moment throughout most of the test angle-of-attack and Mach number range and that the variations of pitching moment with lift for trim conditions are relatively linear. There is a decrease in canard effectiveness with an increase in angle of attack up to about Mach 2.50 as evidenced by the beginning of coalescence of the pitching-moment curves. At a Mach number above 2.50, there is an increase in effectiveness at moderate to high angles of attack. Simulated launch straps have little effect on the lift and pitch characteristics but do cause an increase in drag, and this increase in drag induces a rolling moment at a zero roll attitude where the straps cause an asymmetric geometric shape. The canards are not suitable devices for roll control and, at some Mach numbers and roll attitudes, are not effective in producing pure yawing moments

A brief history of long memory: Hurst, Mandelbrot and the road to ARFIMA

Long memory plays an important role in many fields by determining the behaviour and predictability of systems; for instance, climate, hydrology, finance, networks and DNA sequencing. In particular, it is important to test if a process is exhibiting long memory since that impacts the accuracy and confidence with which one may predict future events on the basis of a small amount of historical data. A major force in the development and study of long memory was the late Benoit B. Mandelbrot. Here we discuss the original motivation of the development of long memory and Mandelbrot's influence on this fascinating field. We will also elucidate the sometimes contrasting approaches to long memory in different scientific communitiesComment: 40 page

Conceptualizing the Youthful Male Sex Offender: A Meta-Analytic Examination of Offender Characteristics by Offense Type

A review of the literature demonstrates that, to date, no concerted effort has been made to conceptualize and develop typologies for youthful male sex offenders on the basis of offense type. Such typologies are deemed important to the understanding of possible developmental antecedents for sexual offending, as well as to the development of theory-driven, empirically based interventions and preventions. This study attempts to begin the conceptualization process through a meta-analytic examination of 140 research samples that provide data on over 16,000 individuals who have committed sexual offenses as youth. Three subtypes of offenders are identified on the basis of offense type: sexual assault offenders, pedophilic offenders (those who molest children significantly younger than they are), and mixed offense offenders (those who commit multiple types of offenses, e.g., voyeurism, sexual assault, and pedophilic acts). The paucity of research that exists for youth voyeurs and exhibitionists precluded the inclusion of these and other hands-off offense subtypes. Descriptive and inferential analyses are conducted and described, typologies are presented, and implications for treatment are suggested. Recommendations for future research are made

The Effects of an Adolescent Social Skills training Program on Adolescent Sex Offenders

The purpose of this research was to assess the efficacy of a 9-week social skills training (SST) program for improving the social competence of adolescent sex offenders. The study was conducted at an outpatient treatment center, Intermountain Sexual Abuse Treatment Center, in Salt Lake City, Utah. A pretest-posttest control group design was utilized and comparisons were made on a variety of self- and parent-report measures to examine treatment effects. The results indicate that the experimental group was able to acquire the specific SST behaviors to a far greater degree than expected by chance. However, evidence of increased social competence outside the training context is somewhat more equivocal. Implications for treatment programs and further research needs are discussed