Surface acoustical intensity measurements on a diesel engine

The use of surface intensity measurements as an alternative to the conventional selective wrapping technique of noise source identification and ranking on diesel engines was investigated. A six cylinder, in line turbocharged, 350 horsepower diesel engine was used. Sound power was measured under anechoic conditions for eight separate parts of the engine at steady state operating conditions using the conventional technique. Sound power measurements were repeated on five separate parts of the engine using the surface intensity at the same steady state operating conditions. The results were compared by plotting sound power level against frequency and noise source rankings for the two methods

Acoustic prediction methods for rocket engines, including the effects of clustered engines and deflected exhaust flow

Acoustic prediction methods for rocket engine

Letter from R. C. Crocker to T. B. Larimore

Letter from R. C. Crocker to T. B. Larimore. The three-page handwritten note is dated 1 December 1912. There is a transcript of the correspondence included in the item PDF

Apportionment of Liability and the Intentional Torts: The Time is Right for Change

In a tort action based solely on the Defendant\u27s wrongful intentional conduct, both parties have been, until recently, at a decided disadvantage. There could be no apportionment of liability between the Plaintiff and Defendant. Fault concepts were seen in absolute terms. Either the Defendant was totally liable for the damages or he was not liable at all. Principles of apportionment of liability generally were not seen as applicable to the intentional torts. Thus, a Plaintiff\u27s contributory fault was irrelevant in determining the Defendant\u27s liability. Likewise, provocation was not a \u27defence\u27 and did not, in all jurisdictions, always reduce compensatory damages. Similarly for a Plaintiff the spectre was total success or total failure. The defences of consent and self-defence were absolute with no loss-sharing. Thus, the law had developed a simple proposition: either a Plaintiff or Defendant, but never both, were liable for injuries sustained

An enquiry into predictability of teaching practice marks, with special reference to those awarded to students attending a college of education

The study is in three parts. Part One looks at background. It briefly covers historical concepts of education; it goes on to look at the people who enter teaching and why they have chosen it as a career. Lastly part one looks at the hurdles they have to negotiate before being offered a place a college of education. Part Two looks at some of the variables which affect student teaching performance – personality, flexibility and how these have been shown to relate to measured teaching performance. It also looks at those variables external to the student which research has shown are likely to affect the marks a student will get for teaching practice. Finally section two looks at the relationship between teaching practice performance and future performance as a qualified teacher. Part Three is the empirical research. Five year groups of students already in colleges of education and one further group interviewed for a place at Bede College, Durham, constitute the research sample. Measures of academic performance, interview grades, I.Q. and flexibility scores were used as predictors of student teaching marks. Consistently the I.Q. score and flexibility score in multiple battery produced the best first order multiple prediction of teaching practice marks. Also consistently, G.C.E. and Interview grades produced the worst multiple prediction of teaching practice marks. The test of flexibility was shown by multiple regression analysis to consistently provide the significant predictive contribution to those multiple batteries in which it was present. The women students obtained very significantly higher scores on the test of flexibility than did the men students. One unexpected finding was that students who would have preferred to go to university were regarded as significantly poorer ' classroom performers than the rest. The appendices deal with the various predictors used in the empirical study, in particular with the development of the test of flexibility. The hypothesis that a test of verbal flexibility would predict the marks awarded to students for their teaching practice performance was accepted

Volunteers in America: How Volunteerism and American Civil Society Shape Our Museums

This thesis examines the intersection of volunteerism, museum studies, and American civil society, using these frameworks to examine volunteer motivations within two Denver area art museums. Additionally, there is much current scholarship that focuses on the relationship between museums and community, yet does not often address the role of museum volunteerism within such a context. This thesis therefore also examines the intersection of community and museum volunteerism, presenting a starting point for future researches to continue studying museum volunteerism within the context of civic engagement. This thesis finds that, while the ideology of American civil society plays a role in museum volunteerism, personal motivations are more likely to push an individual to volunteer. It also concludes that volunteers are currently less likely to see museums as civically engaged places than other institutions. Finally, this thesis presents possible actions to help museum staff and community partners create a more civically engaged museum volunteer corps