On-line analysis of random vibrations

Measuring device, Randomdec, provides continuous on-line signatures representative of system free vibration curve. Selected points on curve are used in control and failure detection systems. Apparatus applied to both linear and nonlinear systems under nonstationary vibratory states

Low friction magnetic recording tape Patent

Development of low friction magnetic recording tap

A Study of the Participation in Leadership Activities in the Area I Federation of the New Farmers of America Organization from 1949-1959

Because of the lack of participation of some NFA chapters in leadership activities in Area I, the writer feels that some ways and means to increase participation in leadership activities would be a great asset to Area I in maintaining some of the vocational agricultural departments that are low in membership. Without developing more leaders in the HFA chapters vocational agriculture in the rural communities will suffer. The writer has attempted to analyze the problem on the basis of two fundamental facts. First, presently, all of the NFA chapters in Area I are not fully participating in leadership activities; second, there is a need for more participation on the part of every NFA chapter in Area I, in order for Area I to compete with other areas, states, sectional and national NFA organizations. The participants would be in a position to receive more FFA Foundation Award money given to the NFA organization by donors to help boys to become established in farming. In order to solve the problem an attempt has been made to answer the following questions: 1. To what extent does the membership of each chapter affect participation in leadership activities? 2. To what extent was there participation in the NFA leadership activities in Area I from 1949 to 1959? 3. What are some evidences that there is a need for more participation in the NFA leadership activities in Area I? 4. What are some ways and means of increasing more participation in leadership activities in Area I? The problem was selected because of the small number of chapters that are participating in NFA leadership activities in Area I. The foregoing statement is magnified in the annual reports of the agricultural teachers, which will be treated in a later chapter of this study. Further evidence of inadequate participation in these chapters is revealed in the answers of the various teachers of Area I to the questions asked on the questionnaire. This too, is validated in a later chapter in this study. This study is principally concerned with more participation in NFA leadership activities, emphasizing the number of NFA members participating compared with the number that could be participating in such activities. This was determined by mailing each teacher in Area I a questionnaire with questions on the number of NFA members in each chapter that could participate in the various leadership activities

Some buffet response characteristics of a twin-vertical-tail configuration

A rigid, 1/6 size, full span model of an F-18 airplane was fitted with flexible vertical tails of two different levels of stiffness that were buffet tested in the Langley Transonic Dynamics Tunnel. Vertical tail buffet response results that were obtained over the range of angles of attack from -10 to 40 degs, and over the range of Mach numbers from 0.30 to 0.95 are presented. These results indicate the following: (1) the response occurs in the first bending mode; (2) the response increases with increasing dynamic pressure, but changes in response are not linearly proportional to the changes in dynamic pressure; (3) the response is larger at M = 0.30 than it is at the higher Mach numbers; (4) the maximum intensity of the buffeting is described as heavy to severe using an assessment criteria proposed by another investigator; and (5) the data at different dynamic pressures and for the different tails correlate reasonably well using the buffet excitation parameter derived from the dynamic analysis of buffeting

1:1 Computing Initiatives: How They Can Be Sustained

Background: One of the fastest growing and most expensive initiatives over the last decade has been 1:1 computing initiatives. However, despite positive impacts on educational outcomes, some systems have discontinued these programs. Purpose: The purpose of this qualitative study was to understand key factors that enabled the successful implementation and sustainment of 1:1 computing initiatives. Literature Review: The purpose of the literature review was to highlight the history of technology in education, provide an overview of the current impact of 1:1 computing, and examine the barriers to sustainability of these initiatives. Research Design: While the philosophical basis of the qualitative approach employed in this study was phenomenology, an overarching constructivist theoretical perspective was used in framing the design of this research. Data Collection and Analysis: Based on the data collected from personal interviews of nine superintendents where 1:1 computing initiatives have been successfully implemented, an analysis of the data revealed several key themes. Results: Through the interviews of the nine superintendents, several themes emerged after analyzing the data gathered. The five themes identified were: vision and planning, teaching and learning, resources, technology suffused world, and equity. Conclusion: As more policymakers and system leaders are adopting and allocating more resources for this popular initiative, a sound understanding of these key factors has become increasingly essential. By considering certain key factors when implementing and sustaining 1:1 computing, computers have the potential to significantly and positively impact education