The Roman Contribution to the Common Law

Although the Roman law was not received in England to the extent that it was received on the Continent, Professor Re submits that its influence was hardly less pervasive. The concepts, the terminology, the universality, and the jurisprudential principles of that vast system were transmitted and infused into the body of English law throughout its development. While the growth of the Anglo-American law still continues, so may the contributions to its development by the Roman law, whose own growth so closely parallels the growth of civilization

Static internal performance including thrust vectoring and reversing of two-dimensional convergent-divergent nozzles

The effects of geometric design parameters on two dimensional convergent-divergent nozzles were investigated at nozzle pressure ratios up to 12 in the static test facility. Forward flight (dry and afterburning power settings), vectored-thrust (afterburning power setting), and reverse-thrust (dry power setting) nozzles were investigated. The nozzles had thrust vector angles from 0 deg to 20.26 deg, throat aspect ratios of 3.696 to 7.612, throat radii from sharp to 2.738 cm, expansion ratios from 1.089 to 1.797, and various sidewall lengths. The results indicate that unvectored two dimensional convergent-divergent nozzles have static internal performance comparable to axisymmetric nozzles with similar expansion ratios

Wind-tunnel investigation of basic aerodynamic characteristics of a supercritical-wing research airplane configuration

Transonic pressure tunnel and transonic tunnel tests were performed to determine the aerodynamic characteristics of a 0.087 scale model of a supercritical wing research airplane configuration at Mach numbers from 0.25 to 1.30. The investigation included tests to determine the basic longitudinal aerodynamic characteristics, the lateral-directional aerodynamic characteristics for sideslip angles of 0 deg and + or - 2.5 deg, and the effects of Reynolds number and aeroelasticity

Sources of occupational stress in NSW and ACT dentists

© 2015 Australian Dental Association. Abstract Background This study aimed to identify and understand the chronic sources of work stress in the NSW and ACT dentistry context. Further, the study examines whether Australian dentists are exposed to similar sources of work stress as dentists internationally. Methods A purposive sample of registered members of the NSW Branch of the Australian Dental Association (ADA) were interviewed. Participants were selected because they represented the key characteristics of the broader ADA population. Interviews were recorded and fully transcribed. Themes were identified, developed, refined and clarified using established and rigorous methods of interview investigation and analysis. Results A total of 18 dentists participated in the study. Inductive content analysis was used to develop six main categories of chronic sources of stress. These groupings were time and scheduling pressures, professional concerns, patient/public perceptions of dentists, staffing problems, pressures associated with treating patients and business process stressors. Conclusions Like their international counterparts, Australian dentists are subject to a variety of job-specific stressors. However, the most notable difference between Australian and international dentists relates to the business side of dentistry. It would appear that the Australian statutory, regulatory and industrial relations environment place unique and profound pressures on Australian dentists

Predictability of catastrophic events: material rupture, earthquakes, turbulence, financial crashes and human birth

We propose that catastrophic events are "outliers" with statistically different properties than the rest of the population and result from mechanisms involving amplifying critical cascades. Applications and the potential for prediction are discussed in relation to the rupture of composite materials, great earthquakes, turbulence and abrupt changes of weather regimes, financial crashes and human parturition (birth).Comment: Latex document of 22 pages including 6 ps figures, in press in PNA

Static internal performance characteristics of two thrust reverser concepts for axisymmetric nozzles

The statis performance of two axisymmetric nozzle thrust reverser concepts was investigated. A rotating vane thrust reverser represented a concept in which reversing is accomplished upstream of the nozzle throat, and a three door reverser concept provided reversing downstream of the nozzle throat. Nozzle pressure ratio was varied from 2.0 to approximately 6.0. The results of this investigation indicate that both the rotating vane and three door reverser concepts were effective static thrust spoilers with the landing approach nozzle geometry and were capable of providing at least a 50 percent reversal of static thrust when fully deployed with the ground roll nozzle geometry

Static internal performance of single-expansion-ramp nozzles with various combinations of internal geometric parameters

The effects of five geometric design parameters on the internal performance of single-expansion-ramp nozzles were investigated at nozzle pressure ratios up to 10 in the static-test facility of the Langley 16-Foot Transonic Tunnel. The geometric variables on the expansion-ramp surface of the upper flap consisted of ramp chordal angle, ramp length, and initial ramp angle. On the lower flap, the geometric variables consisted of flap angle and flap length. Both internal performance and static-pressure distributions on the centerlines of the upper and lower flaps were obtained for all 43 nozzle configurations tested