In this paper, a shape optimization procedure for a flexible structure which shows strong nonlinearity like rubber is presented. This method follows the idea of the traction method proposed by Azegami but is extended ...
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In this paper, a shape optimization procedure for a flexible structure which shows strong nonlinearity like rubber is presented. This method follows the idea of the traction method proposed by Azegami but is extended to handle any kinds of nonlinearity. It is formulated in a complete discrete form and not the surface traction force but the body force is applied, so the method is termed as 'discrete force method'. In this study, in order to verify the validity and effectiveness of the present method, some shape optimization problems of rubber like structures are considered with the nonlinear finite element program for hyperelastic material using the Mooney-Rivlin law and combined with the present method. The first simple numerical example of the plate with a center hole shows the validity of the present method and the second analysis of the flexible micromanipulator shows applicability to the practical problem.
The predicted dramatic increase in demand for IT workers in the next decade suggests an opportunity for IT educators to establish plans to ramp up to meet these needs. The purpose of this paper is to help educators un...
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The predicted dramatic increase in demand for IT workers in the next decade suggests an opportunity for IT educators to establish plans to ramp up to meet these needs. The purpose of this paper is to help educators understand factors that are important to IT workers and that can be influenced by the educational process. The work reported here is part of an NSF grant that explored current IT worker experiences and motivations. Data for the study was collected using a forty-four-item questionnaire sent to currently employed IT workers in the Boston area. Stepwise multiple linear regression was used to relate certain outcome variables to attributes and opinions of the respondents as represented by question item responses. Relationships have been discovered that will help educators craft academic programs and identify potentially successful students in IT. For example, the analysis indicates questionnaire items associated with the challenge presented by an IT profession and family educational backgrounds in technical areas are important outcome predictors, while gender and age are less important.
The strong tendency toward integrated systems and the system thinking approaches are shaping the way manufacturing enterprises are being managed, especially in an environment of market globalization, ever varying cust...
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The strong tendency toward integrated systems and the system thinking approaches are shaping the way manufacturing enterprises are being managed, especially in an environment of market globalization, ever varying customer requirements and increasing competition. To achieve a competitive advantage an enterprise must cope with these changes in the working environment. The future development of manufacturing simulation systems is directed to integrated enterprise modeling in two direction: horizontally by integration of manufacturing processes with the entire enterprise logistics chain, and vertically by integration of the decision making processes at strategic, tactical and operation levels [1]. In this work, we introduce a hybrid approach to the integration of discrete-event models with system dynamic models to simulate the entire manufacturing enterprise. This approach basically covers the strategic, tactical, and operational levels of decision-making in a single simulation of multiple models at different levels and resolutions. System dynamics (SD) is utilized to model the higher levels of decision-making in the enterprise. On the other hand, discrete-event simulation (DES) models are utilized for the factory and shop floor levels. Studying the interaction between strategic planning and the production activities is the core of this work. Discrete event simulation has been the most usable simulation tool in manufacturing systems. It has the ability to describe the most complex systems at any level of details while allowing tracking the status of individual entities and resources and estimate numerous performance measures associated with these entities various operating conditions. This makes it most appropriate approach to simulate the detailed production activities. At the higher levels of decisions making, the detailed approach of DES is not appropriate [2,3,4]. For one reason the decision maker at such levels do not prefer detailed analyses. In additions unlike m
A risk management approach that integrates risk profile with actual damages and implementation costs to determine the costs and benefits of information security solutions, is discussed. Two crucial concepts of the app...
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A risk management approach that integrates risk profile with actual damages and implementation costs to determine the costs and benefits of information security solutions, is discussed. Two crucial concepts of the approach, incident types and bypass rates, used to judge the efficiency and return on investment for an organization's security solutions are described. The data required for risk analysis include observed damage, which is the damage that the company sustains in a given time period for each incident type and cost for a given security solution. The method to calculate risk-based return on investment (RROI) is also described.
A conceptual framework for designing team training programs was discussed to help students in becoming effective team players. The framework was found to imply that any team training program should be designed to prep...
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A conceptual framework for designing team training programs was discussed to help students in becoming effective team players. The framework was found to imply that any team training program should be designed to prepare team members for managing their own team process. The team training program was suggested to be able to define and apply strategies that allow them to deal with those factors affecting team effectiveness. It was suggested that program content, activities, and resources should be targeted to students achieving a conscious understanding of the process of teaming and team effectiveness.
An advanced engineering mechanics course teaches students to analyze and model a variety of dynamical systems using Newtonian and Lagrangian mechanics approaches. The modeling task typically produces nonlinear differe...
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ISBN:
(纸本)0791847233
An advanced engineering mechanics course teaches students to analyze and model a variety of dynamical systems using Newtonian and Lagrangian mechanics approaches. The modeling task typically produces nonlinear differential equations that are best solved numerically. In order to prepare students to competently solve these systems numerically, the students must master a suitable programming environment. This mastery is achieved incrementally throughout the semester. This paper describes a successful approach to developing the necessary programming skills, culminating in a course project in which the students model a complex dynamical system and produce a graphical animation allowing visualization of dynamical behavior. The paper also describes two typical course projects that have been successfully completed by advanced undergraduate and beginning graduate students. Copyright 2004 by ASME.
This study investigates the design of a new- structure of matrix material, called "mesh sheet" for the regenerator of a Stirling engine. Flow and heat transfer characteristics of the matrix materials were an...
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Several international agreements developed during the past decade have emphasized the reduction of greenhouse gas emissions to delay or reverse the current global warming cycle. Carbon dioxide, as an abundant, global ...
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Several international agreements developed during the past decade have emphasized the reduction of greenhouse gas emissions to delay or reverse the current global warming cycle. Carbon dioxide, as an abundant, global greenhouse gas, has been pegged as the chief villain in global warming. Much of the carbon sequestration research has focused on the largest plants, trees. The goal of this work is to reinforce the idea that planting trees in urban areas and along rural roads can make a measurable difference in air quality.
Within the next 5-10 years, the percentage of Industrial Engineers working outside of traditional manufacturing industries is expected to increase dramatically. Therefore, the goal of this educational research effort ...
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Within the next 5-10 years, the percentage of Industrial Engineers working outside of traditional manufacturing industries is expected to increase dramatically. Therefore, the goal of this educational research effort is to prepare future IE graduates for careers in emerging areas of Industry such as those found in Information technology, Service Industries and engineeringmanagement. For instance, in addition to the commonly performed tasks, future IEs will also be expected to contribute to system and product design tasks that will enhance the Information Technology Industries and entities heavily reliant upon the use of this IT strategies such as Global Database systems, PDA's, mobile phones, Semantic Web Technology Companies, etc. Also, changes have occurred in the expectation of the sophistication level of "tools and techniques" used to perform system design, product design, and improvement analysis in Industry. Thus, it is imperative for future IE graduates to have courses and educational experiences that develop their knowledge base, skill set, and work experiences in the area of Advanced Information systems. There are many factors within the Educational Environment that impact the successful preparation of students to pursue future roles in the field of Industrial engineering. Some of the more critical factors include the educational curriculum, instructional strategies, and exposure to recent technology and opportunities for experiential learning. Therefore, this research will also concentrate on preparing students for employment with nontraditional manufacturing industries, as well as on integrating Cognitive Learning Theory into decisions regarding instructional strategies. It is important that the faculty is knowledgeable on the foundation principles in Cognitive Theory and its fundamental application to the specific subject matter of the course they are teaching. Thus, recognizing that all instructional strategies aren't appropriate for every subject;but
An innovative new program designed for the subset of senior design course students is discussed. The program is designed for the Florida Tech's students to leverage their design course by commercializing their pro...
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An innovative new program designed for the subset of senior design course students is discussed. The program is designed for the Florida Tech's students to leverage their design course by commercializing their products and technologies and start-up companies. The students develop real world marketing and business plans for commercializing innovative new products and technologies. The program is designed to facilitate the creation of start-up, technology- based, revenue generating ventures.
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