Metamodeling of NURBS Surfaces for Visual Representation of Hydrodynamic Solutions

2015 ◽  
Author(s):  
Brian J. Cuneo ◽  
Michael J. Sypniewski ◽  
Zensho Heshiki ◽  
Benjamin J. Rosenthal
Keyword(s):  
Design Tool ◽  
Decision Makers ◽  
Optimal Designs ◽  
Background Information ◽  
Distributed Data ◽  
Design Tools ◽  
Total Resistance ◽  
3 Dimensional ◽  
Computational Speed ◽  
Nurbs Surfaces

The present paper discusses the topic that of directional stability and course keeping of fast Throughout early stages of ship design, numerous design variable values must be considered to gather information in an effort to steer decision makers towards optimal designs. The computational speed of design tools often leads engineers to make tradeoffs between solution fidelity and the time it takes to analyze multiple designs with the same tool. Metamodeling allows for instantaneous estimation of higher fidelity solutions for tools with a single value as an output, such as total resistance. However, these methods lack in usefulness when the solution of a design tool is visual in nature, such as the distribution of pressures on a hull. This paper will outline a new method of metamodeling applied to distributed data. While current metamodeling methods are useful in automated design environments, such as optimization algorithms, the method described in this paper allows the designer to be brought back into the design process by providing immediate estimations of design tool outputs that are best interpreted visually. The method works by using Non-Uniform Rational B-Spine (NURBS) curves and surfaces to represent 2 and 3 dimensional outputs of design tools and applying conventional metamodeling methods to the NURBS coefficients. The remainder of this paper will be outlined as follows: first background information will be presented, then the NURBS metamodeling method will be explained in detail, next two example applications will be demonstrated, finally some conclusions will be made.

Examining Design Tool Use in Engineering Curriculum: A Case Study

2008 ◽  
Author(s):  
W. Stuart Miller ◽  
Sudhakar Teegavarapu ◽  
Joshua D. Summers
Keyword(s):  
Tool Use ◽  
Performance Metrics ◽  
Design Tool ◽  
Background Information ◽  
Design Tools ◽  
Engineering Curriculum ◽  
Future Design ◽  
Engineering Department ◽  
The Given

This case study observes the effect of design tool use in engineering courses on subsequent uses of design tools. Students gain a familiarity with design tools as they use them in early engineering classes, and will traditionally implement similar methods to seek future design solutions. Problems arise because design tools are often used inappropriately, which may or may not lead to productive outcomes. Understanding how design tools are incorporated into engineering curriculum will reveal how that particular method was selected, the background information given to the student to facilitate tool use, and the benefit gained from using the specific tool in the given case. This information is valuable to the evaluation of the engineering curriculum of which few performance metrics exist. This case study utilizes a design team enrolled in a capstone design course to collect data on the use of design tools throughout their curriculum. Trends are revealed that relate how the tool use is implemented, how the instruction is delivered to the student, and the beneficial application of those to the given design project. These trends directly apply to the intellectual growth of the student as well as the topical coverage and implementation by the engineering department. Using this information, the engineering curriculum can improve its delivery of design instruction. It can be assumed that by improving the curriculum, the quality of the students will follow; yielding engineers who can study better and conduct design projects with intentional precision.

scholarly journals GPrimer: a fast GPU-based pipeline for primer design for qPCR experiments

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Jeongmin Bae ◽  
Hajin Jeon ◽  
Min-Soo Kim
Keyword(s):  
Data Structures ◽  
Primer Design ◽  
Main Memory ◽  
Design Tools ◽  
Workload Balancing ◽  
Qpcr Analysis ◽  
Computational Speed ◽  
Entire Sequence ◽  
Target Sequences ◽  
Coalesced Memory

Abstract Background Design of valid high-quality primers is essential for qPCR experiments. MRPrimer is a powerful pipeline based on MapReduce that combines both primer design for target sequences and homology tests on off-target sequences. It takes an entire sequence DB as input and returns all feasible and valid primer pairs existing in the DB. Due to the effectiveness of primers designed by MRPrimer in qPCR analysis, it has been widely used for developing many online design tools and building primer databases. However, the computational speed of MRPrimer is too slow to deal with the sizes of sequence DBs growing exponentially and thus must be improved. Results We develop a fast GPU-based pipeline for primer design (GPrimer) that takes the same input and returns the same output with MRPrimer. MRPrimer consists of a total of seven MapReduce steps, among which two steps are very time-consuming. GPrimer significantly improves the speed of those two steps by exploiting the computational power of GPUs. In particular, it designs data structures for coalesced memory access in GPU and workload balancing among GPU threads and copies the data structures between main memory and GPU memory in a streaming fashion. For human RefSeq DB, GPrimer achieves a speedup of 57 times for the entire steps and a speedup of 557 times for the most time-consuming step using a single machine of 4 GPUs, compared with MRPrimer running on a cluster of six machines. Conclusions We propose a GPU-based pipeline for primer design that takes an entire sequence DB as input and returns all feasible and valid primer pairs existing in the DB at once without an additional step using BLAST-like tools. The software is available at https://github.com/qhtjrmin/GPrimer.git.

An Interactive Morphological Matrix Computational Design Tool: A Hybrid of Two Methods

2007 ◽  
Author(s):  
Cari R. Bryant ◽  
Matt Bohm ◽  
Robert B. Stone ◽  
Daniel A. McAdams
Keyword(s):  
Computational Design ◽  
Design Tool ◽  
Design Tools ◽  
Concept Generation ◽  
University Of Missouri ◽  
Generation Algorithm ◽  
Design Theories ◽  
The University ◽  
Matrix Generator

This paper builds on previous concept generation techniques explored at the University of Missouri - Rolla and presents an interactive concept generation tool aimed specifically at the early concept generation phase of the design process. Research into automated concept generation design theories led to the creation of two distinct design tools: an automated morphological search that presents a designer with a static matrix of solutions that solve the desired input functionality and a computational concept generation algorithm that presents a designer with a static list of compatible component chains that solve the desired input functionality. The merger of both the automated morphological matrix and concept generation algorithm yields an interactive concept generator that allows the user to select specific solution components while receiving instantaneous feedback on component compatibility. The research presented evaluates the conceptual results from the hybrid morphological matrix approach and compares interactively constructed solutions to those returned by the non-interactive automated morphological matrix generator using a dog food sample packet counter as a case study.

HyperGear: An Object Oriented Design Program for Single Stage Gear Box Design

1991 ◽  
Author(s):  
Gary A. Gabriele ◽  
Agustî Maria I. Serrano
Keyword(s):  
Computer Aided Design ◽  
Object Oriented ◽  
Design Tool ◽  
Single Stage ◽  
Design Tools ◽  
Object Oriented Design ◽  
Computer Aided ◽  
Gear Box ◽  
Aided Design ◽  
Object Oriented Languages

Abstract The need for superior design tools has lead to the development of better and more complex computer aided design programs. Two of the more important new developments in application tools being investigation are Object Oriented Languages, and HyperMedia. Object Oriented Languages allow the development of CAD tools where the parts being designed and the design procedures specified are conceptualized as objects. This allows for the development of design aids that are non-procedural and more readily manipulated by the user trying to accomplish a design task. HyperMedia allows for the easy inclusion of many different types of data, such as design charts and graphs, into the tool that are normally difficult to include in design tools programmed with more conventional programming languages. This paper explores the development of a computer aided design tool for the design of a single stage gear box using the development HyperCard® environment and the HyperTalk® programming language. The resulting program provides a user friendly interface, the ability to handle several kinds of design information including graphic and textual, and a non-procedural design tool to help the user design simple, one stage gear boxes. Help facilities in the program make it suitable for undergraduate instruction in a machine elements design course.

Burning Assets? Designing Wood Fuel Energy Strategies in Mozambique

2017 ◽  
pp. 422-447
Author(s):  
Ricardo Martins
Keyword(s):  
Developing Countries ◽  
Design Tool ◽  
Survival Strategies ◽  
Design Tools ◽  
Wood Fuel ◽  
Policy Makers ◽  
Strategic Design ◽  
Ecological Resources ◽  
Necessary And Sufficient ◽  
Energy Strategies

Getting wood for cooking, heating, processing into charcoal and/or selling is a fundamental part of most household survival strategies in Developing Countries. Entangling in complex and dynamic ways local and global ecosystems, poverty, technology and business Wood Fuel Energy Systems (WES) are fundamental and require simple to use design tools to support the strategic and optimised used of available socio-ecological resources/assets. However, there are very few tools able to support relevant actors (e.g. charcoal makers, experts, policy makers) in that task. To bridge that gap the 2MBio, a participatory conceptual design tool to support the strategic design of WES, is introduced and its practical results in Mozambique presented. The 2MBio explicit in a simple and intuitive layout the set of necessary and sufficient resources/assets required to produce comprehensive and meaningful WES designs/strategies, which represent in themselves a strategic asset, while further stimulates knowledge and creativity as a tacit asset.

Graphical Spreadsheets as Convenient Tools for Turbomachinery Education

2001 ◽  
Author(s):  
Timothy F. Miller
Keyword(s):  
Software Package ◽  
Design Tool ◽  
Design Tools ◽  
Primary Reason ◽  
Educational Design ◽  
Analysis And Design ◽  
Radial Pump ◽  
And Function ◽  
Design Aspect ◽  
Spreadsheet Software

An unfortunate aspect of engineering education in general, and turbomachinery education in specific, has been the difficulty of incorporating the design aspect of instruction with the time-consuming components that make up theoretical instruction. The primary reason for this difficulty is the extremely limited time (typically three months) allocated to teach turbomachinery as a senior-level quarter or semester technical elective. It is desirable to develop an educational design tool that can be simultaneously exercised by a student to perform various design tasks and function as a means of theoretical instruction. Such a tool can permit the students both greater depth and breadth of exposure and may be subsequently used by the students in their future capacity as professional engineers. In this paper, this tool is illustrated by several applications of a commercial “graphical spreadsheet” software package (MathCAD, though others such as Mathmatica and Macsyma are appropriate as well). Some graphical spreadsheet design tools are presented, and these tools are applied to the analysis and design of a radial pump, centrifugal compressor, and radial-inflow turbine.

scholarly journals A Design Technique for Adapting Number and Boundaries of Reconfigurable Modules at Runtime

2009 ◽  
Vol 2009 ◽  
pp. 1-10 ◽  
Author(s):  
Thilo Pionteck ◽  
Roman Koch ◽  
Carsten Albrecht ◽  
Erik Maehle
Keyword(s):  
System Architecture ◽  
Design Tool ◽  
Design Flow ◽  
Design Tools ◽  
System Architectures ◽  
Flexible System ◽  
Reconfigurable System ◽  
Communication Needs ◽  
On Chip ◽  
Architecture And Design

Runtime reconfigurable system-on-chip designs for FPGAs pose manifold demands on the underlying system architecture and design tool capabilities. The system architecture has to support varying communication needs of a changing number of processing units mapped onto diverse locations. Design tools should support an arbitrary placement of processing modules and the adjustment of boundaries of reconfigurable regions to the size of the actually instantiated processing modules. While few works address the design of flexible system architectures, the adjustment of boundaries of reconfigurable regions to the size of the actually instantiated processing modules is hardly ever considered due to design tool limitations. In this paper, a technique for circumventing this restriction is presented. It allows for a rededication of the reconfigurable area to a different number of individually sized reconfigurable regions. This technique is embedded in the design flow of a runtime reconfigurable system architecture for Xilinx Virtex-4 FPGAs. The system architecture will also be presented to provide a realistic application example.

Enhancing Virtual Product Representations for Advanced Design Repository Systems

2005 ◽  
Vol 5 (4) ◽  
pp. 360-372 ◽  
Author(s):  
Matt R. Bohm ◽  
Robert B. Stone ◽  
Simon Szykman
Keyword(s):  
Design Theory ◽  
Product Information ◽  
Single Point ◽  
Search Display ◽  
Design Tool ◽  
Design Knowledge ◽  
Design Tools ◽  
Product Knowledge ◽  
Support Design ◽  
Point Of Entry

This paper describes the transformation of an existing set of heterogeneous product knowledge into a coherent design repository that supports product design knowledge archival and web-based search, display, and design model and tool generation. Guided by design theory, existing product information was analyzed and compared against desired outputs to ascertain what information management structure was needed to produce design resources pertinent to the design process. Several test products were catalogued to determine what information was essential without being redundant in representation. This set allowed for the creation of a novel single point of entry application for product information and the development of a relational database for design knowledge archival. Web services were then implemented to support design knowledge retrieval through search, browse, and real-time design tool generation. Further explored in this paper are the fundamental enabling technologies of the design repository system. Additionally, repository-generated design tools are scrutinized alongside human-generated design tools for validation. Through this process researchers have been able to improve the way in which artifact data are gathered, archived, distributed and used.

A Novel Integrated AHP-QFD Model for Investment Banks

2014 ◽  
Vol 548-549 ◽  
pp. 1959-1964 ◽  
Author(s):  
Hooman Mihanzadeh ◽  
Yulizar Widiatama ◽  
Marzieh Geramian Nik ◽  
Hamed Gholami ◽  
Zahra Akbardoost Laskoukalayeh
Keyword(s):  
Quality Function Deployment ◽  
Relative Weight ◽  
Design Tool ◽  
Decision Makers ◽  
Investment Banks ◽  
Investment Bank ◽  
Proposed Model ◽  
Hierarchy Process ◽  
Internal Relationships ◽  
Structured Questionnaire

This paper proposes an effective model to integrate shareholders’ requirements with regard to Bank’s investment categories in an effort to rank the best project portfolios in order of importance whereby they reap the benefits of their secured investments. This study attempts to utilize Quality Function Deployment (QFD) in an investment bank sector, a customer oriented design tool which starts with House of Quality (HOQ). In this manner, Analytical Hierarchy Process (AHP) approach was employed to fulfill the intended HOQs through measuring the relative importance of shareholders’ needs as well as finding the relative weight of each investment more precisely. For this purpose, a well-structured questionnaire initially should be developed to identify the selection-criteria “wants” and thereby analyzing the intensity of internal relationships through cooperation with the Bank’s Decision makers (BDMs). The results of project portfolio selection revealed that Project D has been nominated as the most potential investment category, followed by Project C, Project B, Project E and Project A. Hopefully, with implementation of the proposed model, investment banks will become more adaptive and competitive.

Analysis and Realization of Critical Points on Hardware Design of FPGA

2014 ◽  
Vol 950 ◽  
pp. 133-138
Author(s):  
Chang Fu Wu
Keyword(s):  
Computer Science ◽  
Critical Points ◽  
Signal Transmission ◽  
Impedance Matching ◽  
Strength Function ◽  
Hardware Design ◽  
Design Tool ◽  
Design Tools ◽  
New Device ◽  
Hardware Designs

FPGA is one kind of important devices that can realize many functions. As the development of communication technology and computer science, more and more technologies are invented and more and more hardware design technologies are sifted out. Therefore, the hardware design based on ASIC can be not fit on the new theories realization. As a new device, FPGA has many advantages including strength function, shorter design circle, less money, more flexible and more intelligent design tools. More and More hardware designs of FPGA are pay more attentions. Therefore, it is significant to make analysis on hardware design of FPGA. The hardware design for FPGA will be related to the FPGA device. In the market Altera and Xilinx FPGAs are used frequently by engineers. Therefore, in this dissertation will be make analysis and realization the critical points in hardware design based on Xilinx FPGA. In this dissertation, the critical point of Hardware Design of FPGA will be described. It will include power source, impedance matching and clock circuit design. There are many hardware design tools used for hardware design including Altium Designer, Protel, Cadence and others. Compared with other design tools, Cadence will have more advantages. Therefore, in this dissertation, Cadence will be used as the design tool for hardware design analysis and realization. With the help of Cadence, one hardware design and signal transmission simulation will be made analysis. With the development of the micro-electronics technology and computer science, the hardware design about FPGA will be taken more and more attentions.

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