Automatic Romaine Heart Harvester

The Romaine Robotics Senior Design Team developed a romaine lettuce heart trimming system in partnership with a Salinas farm to address a growing labor shortage in the agricultural industry that is resulting in crops rotting in the field before they could be harvested. An automated trimmer can alleviate the most time consuming step in the cut-trim-bag harvesting process, increasing the yields of robotic cutters or the speed of existing laborer teams. Leveraging the Partner Farm’s existing trimmer architecture, which consists of a laborer loading lettuce into sprungloaded grippers that are rotated through vision and cutting systems by an indexer, the team redesigned geometry to improve the loading, gripping, and ejection stages of the system. Physical testing, hand calculations, and FEA were performed to understand acceptable grip strengths and cup design, and several wooden mockups were built to explore a new actuating linkage design for the indexer. The team manufactured, assembled, and performed verification testing on a full-size metal motorized prototype that can be incorporated with the Partner Farm’s existing cutting and vision systems. The prototype met all of the established requirements, and the farm has implemented the redesign onto their trimmer. Future work would include designing and implementing vision and cutting systems for the team’s metal prototype

Process re-engineering success in small and medium-sized enterprises

The factors that lead to business process re-engineering (BPR) success in small and medium-sized enterprises (SMEs) are not clearly understood. This paper reviews the main contributing factors to BPR success using a framework that considers culture, structure, technology and resource. Eight Taiwanese case studies are used to explore issues contributing to, or impeding, successful process re-engineering in small firms. The analysis shows that BPR success is empowered by innovation, employee empowerment, top management commitment and strategic direction and is dependent upon customer relations, IS involvement and financial resources

Development of assembly and joint concepts for erectable space structures

The technology associated with the on-orbit assembly of tetrahedral truss platforms erected of graphite epoxy tapered columns is examined. Associated with the assembly process is the design and fabrication of nine member node joints. Two such joints demonstrating somewhat different technology were designed and fabricated. Two methods of automatic assembly using the node designs were investigated, and the time of assembly of tetrahedral truss structures up to 1 square km in size was estimated. The effect of column and node joint packaging on the Space Shuttle cargo bay is examined. A brief discussion is included of operating cost considerations and the selection of energy sources. Consideration was given to the design assembly machines from 5 m to 20 m. The smaller machines, mounted on the Space Shuttle, are deployable and restowable. They provide a means of demonstrating the capabilities of the concept and of erecting small specialized platforms on relatively short notice

Analysis and control of complex collaborative design systems

This paper presents a novel method for modelling the complexity of collaborative design systems based on its analysis and proposes a solution to reducing complexity and improving performance of such systems. The interaction and interfacing properties among many components of a complex design system are analysed from different viewpoints and then a complexity model for collaborative design is established accordingly. In order to simplify complexity and improve performance of collaborative design, a general solution of decomposing a whole system into sub-systems and using unified interface mechanism between them has been proposed. This proposed solution has been tested with a case study. It has been shown that the proposed solution is meaningful and practical

Automatic Mapping of NES Games with Mappy

Game maps are useful for human players, general-game-playing agents, and data-driven procedural content generation. These maps are generally made by hand-assembling manually-created screenshots of game levels. Besides being tedious and error-prone, this approach requires additional effort for each new game and level to be mapped. The results can still be hard for humans or computational systems to make use of, privileging visual appearance over semantic information. We describe a software system, Mappy, that produces a good approximation of a linked map of rooms given a Nintendo Entertainment System game program and a sequence of button inputs exploring its world. In addition to visual maps, Mappy outputs grids of tiles (and how they change over time), positions of non-tile objects, clusters of similar rooms that might in fact be the same room, and a set of links between these rooms. We believe this is a necessary step towards developing larger corpora of high-quality semantically-annotated maps for PCG via machine learning and other applications.Comment: 9 pages, 7 figures. Appearing at Procedural Content Generation Workshop 201

Estimating Workforce Development Needs for High-Speed Rail in California, Research Report 11-16

This study provides an assessment of the job creation and attendant education and training needs associated with the creation of the California High-Speed Rail (CHSR) network, scheduled to begin construction in September 2012. Given the high profile of national and state commitment to the project, a comprehensive analysis that discusses the education, training, and related needs created during the build out of the CHSR network is necessary. This needs assessment is achieved by means of: 1) analyzing current high-speed rail specific challenges pertaining to 220mph trains; 2) using a more accurate and robust “bottom-up” approach to estimate the labor, education, skills, and knowledge needed to complete the CHSR network; and 3) assessing the current capacity of railroad-specific training and education in the state of California and the nation. Through these analyses, the study identifies the magnitude and attributes of the workforce development needs and challenges that lie ahead for California. The results of this research offer new insight into the training and education levels likely to be needed for the emergent high-speed rail workforce, including which types of workers and professionals are needed over the life of the project (by project phase), and their anticipated educational level. Results indicates that although the education attained by the design engineers of the system signifies the most advanced levels of education in the workforce, this group is comparatively small over the life of the project. Secondly, this report identifies vast training needs for the construction workforce and higher education needs for a managerial construction workforce. Finally, the report identifies an extremely limited existing capacity for training and educating the high-speed rail workforce in both California and in the U.S. generally

Exploring the links between business process re-engineering and small and medium-sized enterprises

Despite a growing literature on business process re-engineering (BPR) principles and prospects, there is little empirical research evaluating the success or failure of BPR initiatives. This is especially so in small and medium-sized enterprises (SMEs) where the potential for BPR benefit may differ significantly from that in their larger counterparts. An examination of the literature on process re-engineering reveals that BPR guidelines derived from the experiences in large organisations are inadequate for SMEs given the different characteristics of SMEs in terms of size, structure, culture, resources and technology. The objective of this research is to develop an appropriate basis of BPR guidelines for SMEs. A pluralistic research method is used due to the exploratory nature of the study and the absence of existing rigorous research in the area. This consists of a questionnaire survey of 116 Taiwan-based SMEs, followed by case studies of eight chosen organisations. The findings from the survey enable the researcher to modify the proposed framework of BPR implementing for SMEs, and the case studies explore the factors that facilitate/inhibit BPR success in SMEs in greater detail. The study reveals an opportunity for SMEs to benefit from BPR efforts, although their BPR initiatives are mainly inter-functional. Re-engineering in SMEs is often a response to positive trends, and is largely dependent upon the owner-manager's perceived benefits and risk-taking attitudes. A strategic vision as well as sound external relations may leverage SMEs' re-engineering efforts to higher business integration, while a lack of financial support and non-standardised IS infrastructure may restrict SMEs' BPR initiatives to functional areas. Employee empowerment, dedication to R&D, and innovative use of IT are intertwined and significantly related to BPR success. The study concludes by outlining the principles of BPR guidelines for SMEs based on a modified framework detailing the BPR environment in SMEs. These include a holistic and strategic view towards BPR, the roles of owner-managers and employees, change issues, and implementing BPR as a process change project

Tree Climbing Limb Saw

This document is the comprehensive report for the Tree Climbing Limb Saw Senior Project. The purpose of the Tree Climbing Limb Saw project, completed by mechanical engineers Andrew Bray, Aimee Chiem, Drew Robles, and Parker Tenney, is to remove low-hanging branches (\u3c15 \u3eft) to prevent forest fires from travelling up into the canopy, where wind can carry embers for miles. An RC car was heavily modified to create a solution for this problem. A chainsaw was also mounted to deal with the cutting part of the problem. Creating a project which aims to solve this problem is a great step towards innovation reaching the wildfire sector. With increased innovation in the field, wildfires may become easier to control. This comprehensive report includes the initial Scope of Work report of this project, followed by the Preliminary Design Review, Critical Design Review, and Final Design Review Report

Safety Stroller

ME450 Capstone Design and Manufacturing Experience: Winter 2010Kids in Danger desires to guide a team of engineers towards building a redesigned child stroller to address certain safety hazards. Common accidents from current strollers include rolling into traffic, invisibility at night, entrapment of the child, difficult setup, and pinching points. Nancy Cowles of Kids in Danger provided us with basic information regarding stroller malfunctions and what needs to be addressed. Our redesigned stroller targets these safety concerns and reduces the possibility of stroller accidents. In addition, this prototype introduces new technology that addresses safety concerns not currently covered by the ASTM F833 standards. The new features target safety hazards that are responsible for numerous child injuries each year, using an engineering approach to provide solutions.http://deepblue.lib.umich.edu/bitstream/2027.42/109379/1/me450w10project21_report.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/109379/2/me450w10project21_photo.jp