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Concepts and analysis for precision segmented reflector and feed support structures

Several issues surrounding the design of a large (20-meter diameter) Precision Segmented Reflector are investigated. The concerns include development of a reflector support truss geometry that will permit deployment into the required doubly-curved shape without significant member strains. For deployable and erectable reflector support trusses, the reduction of structural redundancy was analyzed to achieve reduced weight and complexity for the designs. The stiffness and accuracy of such reduced member trusses, however, were found to be affected to a degree that is unexpected. The Precision Segmented Reflector designs were developed with performance requirements that represent the Reflector application. A novel deployable sunshade concept was developed, and a detailed parametric study of various feed support structural concepts was performed. The results of the detailed study reveal what may be the most desirable feed support structure geometry for Precision Segmented Reflector/Large Deployable Reflector applications

Developing Broad Business Perspective Competencies By Partnering With Practitioners

The CPA Vision Project - 2011 and Beyond) is a blueprint for the accounting profession of the 21st Century. From this visioning process the AICPA Core Competency Framework for Entry into the Accounting Profession (1999) was developed. It is from this framework that accounting educators are invited to adjust curriculum to provide students with the opportunity to develop these functional, personal, and broad business perspective core competencies so that students can meet the accounting profession challenges of the 21st century. This paper provides a specific model for developing broad business perspective competencies by partnering with a practitioner. Although using professionals in the classroom is not a new idea, this paper offers a unique perspective of the process by juxtaposing the perspectives of the academic and the practitioner in the processes of developing the partnership, planning the classroom event (which includes developing the broad business perspective competencies), designing and collecting student feedback, and evaluating the results of the classroom event and partnership

Drivers of the Value of the Firm: Profitability, Growth, and Capital Intensity

Value-based management systems focus on wealth and the wealth creation process and promote the generation of value for the shareholders. A valuation model for the firm is extended analytically to focus explicitly on profitability, growth, and capital intensity as drivers of the value of the firm. The extended model provides information about the sensitivities of the value of the firm to changes in the firm\u27s profitability, growth, and capital intensity. These sensitivities are presented in terms of changes per dollar of sales and actual dollar changes. The changes per dollar of sales show the relative sensitivities of the changes in the value of the firm resulting from changes in the measures for profitability, growth, and capital intensity. Each dollar amount shows the total dollar changes in the value of the firm resulting from changes in the profitability, growth, and capital intensity measures. These sensitivities show the impact of changes in the profitability, growth, and capital intensity measures on the value of the firm. This information is valuable in helping managers determine a desired course of action to improve the wealth generating ability of the firm by managing these value drivers more effectively