National Library of Energy BETA

Sample records for whe eler cad

  1. Going Global Inspired by passion and driven by research, Western Heads East (WHE)

    E-Print Network [OSTI]

    Lennard, William N.

    women's groups, WHE has introduced probiotic yogurt as a means of addressing health issues related in Africa · Overall goal to establish probiotic yogurt programs in Tanzania, Kenya, Rwanda and Uganda and school lunch programs, while producing and distributing probiotic yogurt · Provides probiotic yogurt

  2. CAD enabling smart handtools

    E-Print Network [OSTI]

    Goyal, Pragun

    2014-01-01

    CAD (Computer Aided Design) software allows one to describe a design in great detail and at any arbitary scale. However, our interface to CAD is still largely through traditional avenues: screen, keyboard and pointing ...

  3. Automating the CAD/CAE Dimensional Reduction Process

    E-Print Network [OSTI]

    Suresh, Krishnan

    Automating the CAD/CAE Dimensional Reduction Process Dr. Krishnan Suresh Department of Mechanical - CAD General Terms Algorithms, Design, Theory. Keywords CAD, CAE, medial axis transforms, dimensional

  4. Parallel GPU Algorithms for Mechanical CAD

    E-Print Network [OSTI]

    Krishnamurthy, Adarsh

    2010-01-01

    of California, Berkeley, Mechanical Engineering Department,GPU Algorithms for Mechanical CAD by Adarsh Krishnamurthy Aof Philosophy in Engineering - Mechanical Engineering in the

  5. Downregulation of Cinnamyl Alcohol Dehydrogenase (CAD) Leads...

    Office of Scientific and Technical Information (OSTI)

    of Cinnamyl Alcohol Dehydrogenase (CAD) Leads to Improved Saccharification Efficiency in Switchgrass Citation Details In-Document Search Title: Downregulation of Cinnamyl...

  6. Distributed & conceptual CAD (DC-CAD) : a new software solution for product design

    E-Print Network [OSTI]

    Egan, Mark D. (Mark Douglas), 1985-

    2007-01-01

    Many computer aided design (CAD) software packages focus on detailed design and not on early stage, conceptual design. The ability to conceptualize and sketch early versions of a product solution is currently limited to ...

  7. An Architecture for Universal CAD Data Exchange Ari Rappoport

    E-Print Network [OSTI]

    Rappoport, Ari

    An Architecture for Universal CAD Data Exchange Ari Rappoport ABSTRACT Parametric feature-based CAD data exchange is one of the most important open problems in solid modeling. The prob- lem and techniques]: graph- ics data structures and data types, languages, standards; J.2 [physical sciences

  8. LungCAD: A Clinically Approved, Machine Learning System for Lung Cancer Detection

    E-Print Network [OSTI]

    Chandy, John A.

    LungCAD: A Clinically Approved, Machine Learning System for Lung Cancer Detection R Bharat Rao Street, New York, NY 10016 ABSTRACT We present LungCAD, a computer aided diagnosis (CAD) system system be tested in a clini- cal trial. We describe the clinical trial in which LungCAD was tested

  9. An integrated CAD methodology applied to wind turbine optimization

    E-Print Network [OSTI]

    Crawford, Curran A. (Curran Alexander), 1978-

    2003-01-01

    Modern engineering practice for designing physical products requires the creation of a CAD model of the design for documentation and manufacturing. As the design evolves from concept through to production, it is analyzed ...

  10. An empirical investigation of AutoCAD user interfaces 

    E-Print Network [OSTI]

    Flores, Patricia Laura

    1992-01-01

    Chair of Advisory Committee: Dr. Deborah A. Mitts This research examined human performance in a computer aided design scenario. Human performance with respect to two AutoCAD user interfaces (Menu and Template) and three AutoCAD task types (drawing... of the few human-computer interaction (HCI) scenarios for which relatively well-developed measures of human performance are not specified (Cuomo and Sharit, 1989). Previous research efforts have focused on measuring hutnan performance in terms of cognitive...

  11. Beyond analysis and representation in CAD : a new computational approach to design education

    E-Print Network [OSTI]

    Celani, Maria Gabriela Caffarena

    2002-01-01

    This thesis aims at changing students' attitude towards the use ofcomputer-aided design (CAD) in architecture. It starts from the premise that CAD is used mostly for analysis and representation, and not as a real design ...

  12. Analysing the Effects of Incentives and Model Attributes on CAD Model Creation and Alteration 

    E-Print Network [OSTI]

    Diwakaran, Ram Prasad

    2012-02-14

    Modern computer-aided design (CAD) systems have contributed significantly towards product development cycle time reduction and product quality improvement. To enhance the performance of CAD systems engineers must be able ...

  13. Industrial Geometry: Recent Advances and Applications in CAD

    E-Print Network [OSTI]

    Pottmann, Helmut

    Industrial Geometry: Recent Advances and Applications in CAD H. Pottmann a, S. Leopoldseder a M, Austria bUniversity of Hong Kong, 421 Chow Yei Ching Bldg, Pokfulam Rd, Hong Kong Abstract Industrial Vision and Image Processing, Computer Graphics and Scientific Visualization. In this paper, Industrial

  14. Adaptive CAD model (re)construction with THBsplines Gabor Kissa,

    E-Print Network [OSTI]

    Jüttler, Bert

    ", Universit`a degli Studi di Firenze, Italy cMTU Aero Engines AG, Munich, Germany Abstract Computer Aided­)construction of critical turbine blade parts. Furthermore, the local THB­spline evaluation in terms of B­spline patches can B-splines, adaptive refinement, CAD interfaces, turbine blades. 1. Introduction Computer Aided

  15. ON THE INTERACTION BETWEEN POWER-AWARE FPGA CAD ALGORITHMS

    E-Print Network [OSTI]

    Wilton, Steve

    -power FPGA circuitry, architectures, or CAD tools, we must first determine where the biggest savings (in terms of energy dissipation) are to be made and whether these savings are cumulative. In this paper, we models, we determine the energy savings obtained by our power- aware technology mapping, clustering

  16. CAD data exchange with Martin Marietta Energy Systems, Inc., Oak Ridge, TN

    SciTech Connect (OSTI)

    Smith, K.L.

    1994-10-01

    This document has been developed to provide guidance in the interchange of electronic CAD data with Martin Marietta Energy Systems, Inc., Oak Ridge, Tennessee. It is not meant to be as comprehensive as the existing standards and specifications, but to provide a minimum set of practices that will enhance the success of the CAD data exchange. It is now a Department of Energy (DOE) Oak Ridge Field Office requirement that Architect-Engineering (A-E) firms prepare all new drawings using a Computer Aided Design (CAD) system that is compatible with the Facility Manager`s (FM) CAD system. For Oak Ridge facilities, the CAD system used for facility design by the FM, Martin Marietta Energy Systems, Inc., is Intregraph. The format for interchange of CAD data for Oak Ridge facilities will be the Intergraph MicroStation/IGDS format.

  17. Dept of Comp Sc & Eng 1 Mohanty VLSI Design and CAD Laboratory

    E-Print Network [OSTI]

    Mohanty, Saraju P.

    in low power VLSI design to prepare next generation CAD tools for automatic design One Faculty and one to strong research infrastructure including Sun Fire server, Sun Workstations and Tera Bytes of storage all. #12;Dept of Comp Sc & Eng 4 Mohanty Research Interests CAD for Nanometer VLSI Circuits Low Power

  18. Mechanisms of hormonal regulation of CAD gene expression and inhibition by Aryl hydrocarbon receptor agonist in human breast cancer cells 

    E-Print Network [OSTI]

    Khan, Shaheen Munawar Ali

    2007-04-25

    The CAD gene is trifunctional and expresses carbamoylphosphate synthetase/aspartate carbamyltransferase/dihydroorotase, which are required for pyrimidine biosynthesis. CAD gene activities are induced in MCF-7 human breast ...

  19. Automatic Generation of a JET 3D Neutronics Model from CAD Geometry Data for Monte Carlo Calculations

    E-Print Network [OSTI]

    Automatic Generation of a JET 3D Neutronics Model from CAD Geometry Data for Monte Carlo Calculations

  20. Towards a hypermedia approach of data organization in building-modeling CAD systems

    E-Print Network [OSTI]

    Zhao, Jian, 1964-

    1990-01-01

    The development of architectural CAD systems implies a trend of using a comprehensive building model as the storage space for all relevant data about one design project. Instead of a set of drawing files, a building is ...

  1. Large-Scale CAD Model Visualization on a Scalable Shared-Memory Architecture

    E-Print Network [OSTI]

    Wald, Ingo

    Boeing 777 air- liner. 1 Introduction Computer Aided Design (CAD) has practically be- come ubiquitous in large-scale manufacturing are potential overlaps of assembly parts, as well as the difficulty in prop

  2. AUTOMATED RECOGNITION OF 3D CAD OBJECTS IN SITE LASER SCANS FOR PROJECT 3D STATUS VISUALIZATION AND

    E-Print Network [OSTI]

    Bosché, Frédéric

    15296) are being developed for project and facility life-cycle management. They are typically built upon control (QA/QC), and (4) life-cycle 3D health monitoring. On one side, multi-dimensional CAD softwareAUTOMATED RECOGNITION OF 3D CAD OBJECTS IN SITE LASER SCANS FOR PROJECT 3D STATUS VISUALIZATION

  3. APPLICATION:APPLICATION: The first real application of the CADThe first real application of the CAD--MCNP coupling approach is toMCNP coupling approach is to

    E-Print Network [OSTI]

    California at San Diego, University of

    the CAD geometry.ry. CAD based MCNP approach Benefits:Benefits: Save the time of modeling the complicated geometry for MCNP.Save the time of modeling the complicated geometry for MCNP. Support all kinds

  4. Use of CAD Tools in the Integrated Computer Engineering Design (ICED) Curriculum

    E-Print Network [OSTI]

    Uht, Augustus K.

    Use of CAD Tools in the Integrated Computer Engineering Design (ICED) Curriculum Augustus K. Uht undergraduate computer engineering curriculum, ICED, is being introduced at the University of Rhode Island. The main feature of the curriculum is a design project span­ ning the last three years of the major

  5. Applied MathCAD Journal, Volume 2, Number 3, 1993 Lubrication Flow in a Narrow Gap

    E-Print Network [OSTI]

    Kostic, Milivoje M.

    Applied MathCAD Journal, Volume 2, Number 3, 1993 Lubrication Flow in a Narrow Gap by M. Kostic in a narrow gap is a very characteristic problem in Fluid Mechanics, or more specifically in lubrication is reduced if a viscous fluid (lubricant) with viscosity Jl is allowed to move through a narrow but variable

  6. 3D City Model Generator: The Application of Neuro-Fuzzy Systems in CAD

    E-Print Network [OSTI]

    163 3D City Model Generator: The Application of Neuro-Fuzzy Systems in CAD Yoshihiro Kobayashi that generates 3D city models from satellite images is formulated, implemented, and tested. Techniques from operations. Therefore, it is expected to develop a system that will generate 3D city models more easily

  7. CAD-BASED CALCULATION OF CUTTING FORCE COMPONENTS IN GEAR HOBBING

    E-Print Network [OSTI]

    Aristomenis, Antoniadis

    CAD-BASED CALCULATION OF CUTTING FORCE COMPONENTS IN GEAR HOBBING BY NIKOLAOS TAPOGLOU and ARISTOMENIS ANTONIADIS Abstract. One of the most commonly used gear manufacturing process especially for external is gear hobbing. The optimisation of the process of gear hobbing is of great importance

  8. Advanced 3-Dimensional CAD Modeling of the Gear Hobbing Process V. Dimitriou 1

    E-Print Network [OSTI]

    Aristomenis, Antoniadis

    Advanced 3-Dimensional CAD Modeling of the Gear Hobbing Process V. Dimitriou 1 , A. Antoniadis 1* 1 to the realistic and accurate simulation of the gear hobbing process, an effec- tive and factual approximation is directly applied in one gear gap. Each generating position formulates a three dimensional surface path

  9. CAD BASED DRILLING USING CONVENTIONAL TWIST DRILLS PANAGIOTIS KYRATSIS*, Dr. Ing. NIKOLAOS BILALIS**, Dr. VASILIS

    E-Print Network [OSTI]

    Aristomenis, Antoniadis

    CAD BASED DRILLING USING CONVENTIONAL TWIST DRILLS PANAGIOTIS KYRATSIS*, Dr. Ing. NIKOLAOS BILALIS, antoniadis@dpem.tuc.gr Abstract: Twist drills are geometrically complex tools, which are used in industry and experimental approaches for drilling simulation. The present paper is based on the ground that the increasing

  10. Automated Design of Microfluidics-Based Biochips: Connecting Biochemistry to Electronics CAD

    E-Print Network [OSTI]

    Chakrabarty, Krishnendu

    Automated Design of Microfluidics-Based Biochips: Connecting Biochemistry to Electronics CAD, USA Abstract Microfluidics-based biochips offer exciting possibilities for high- throughput sequencing monitoring. The complexity of microfluidic devices is expected to become significant in the near future due

  11. ACCELERATING FUSION REACTOR NEUTRONICS MODELING BY AUTOMATIC COUPLING OF HYBRID MONTE CARLO/DETERMINISTIC TRANSPORT ON CAD GEOMETRY

    SciTech Connect (OSTI)

    Biondo, Elliott D; Ibrahim, Ahmad M; Mosher, Scott W; Grove, Robert E

    2015-01-01

    Detailed radiation transport calculations are necessary for many aspects of the design of fusion energy systems (FES) such as ensuring occupational safety, assessing the activation of system components for waste disposal, and maintaining cryogenic temperatures within superconducting magnets. Hybrid Monte Carlo (MC)/deterministic techniques are necessary for this analysis because FES are large, heavily shielded, and contain streaming paths that can only be resolved with MC. The tremendous complexity of FES necessitates the use of CAD geometry for design and analysis. Previous ITER analysis has required the translation of CAD geometry to MCNP5 form in order to use the AutomateD VAriaNce reducTion Generator (ADVANTG) for hybrid MC/deterministic transport. In this work, ADVANTG was modified to support CAD geometry, allowing hybrid (MC)/deterministic transport to be done automatically and eliminating the need for this translation step. This was done by adding a new ray tracing routine to ADVANTG for CAD geometries using the Direct Accelerated Geometry Monte Carlo (DAGMC) software library. This new capability is demonstrated with a prompt dose rate calculation for an ITER computational benchmark problem using both the Consistent Adjoint Driven Importance Sampling (CADIS) method an the Forward Weighted (FW)-CADIS method. The variance reduction parameters produced by ADVANTG are shown to be the same using CAD geometry and standard MCNP5 geometry. Significant speedups were observed for both neutrons (as high as a factor of 7.1) and photons (as high as a factor of 59.6).

  12. Int. Symposium on Mechanics and Materials, May 9-14, 2010, Greece CAD-Based Simulation of Gear hobbing

    E-Print Network [OSTI]

    Aristomenis, Antoniadis

    31st Int. Symposium on Mechanics and Materials, May 9-14, 2010, Greece CAD-Based Simulation of Gear ABSTRACT Gear hobbing is a common method of manufacturing high precision involute gears. The thorough to produce helical and spur gears as they influence the cost of the manufacturing process and the quality

  13. Integration of TCAD Tools into CAD Tools for MEMS Nathan M. Wilson 1 , Robert W. Dutton 2

    E-Print Network [OSTI]

    Dutton, Robert W.

    @stanford.edu Micro-Electro-Mechanical Systems (MEMS) o#11;er dramatic new functional capabilities. Analysis of MEMSIntegration of TCAD Tools into CAD Tools for MEMS Nathan M. Wilson 1 , Robert W. Dutton 2- dimensional. The multi-domain physics for MEMS includes electrical, mechanical, and uidic interactions. E#11

  14. Using CAD software to simulate PV energy yield - The case of product integrated photovoltaic operated under indoor solar irradiation

    SciTech Connect (OSTI)

    Reich, N.H.; van Sark, W.G.J.H.M.; Turkenburg, W.C.; Sinke, W.C.

    2010-08-15

    In this paper, we show that photovoltaic (PV) energy yields can be simulated using standard rendering and ray-tracing features of Computer Aided Design (CAD) software. To this end, three-dimensional (3-D) sceneries are ray-traced in CAD. The PV power output is then modeled by translating irradiance intensity data of rendered images back into numerical data. To ensure accurate results, the solar irradiation data used as input is compared to numerical data obtained from rendered images, showing excellent agreement. As expected, also ray-tracing precision in the CAD software proves to be very high. To demonstrate PV energy yield simulations using this innovative concept, solar radiation time course data of a few days was modeled in 3-D to simulate distributions of irradiance incident on flat, single- and double-bend shapes and a PV powered computer mouse located on a window sill. Comparisons of measured to simulated PV output of the mouse show that also in practice, simulation accuracies can be very high. Theoretically, this concept has great potential, as it can be adapted to suit a wide range of solar energy applications, such as sun-tracking and concentrator systems, Building Integrated PV (BIPV) or Product Integrated PV (PIPV). However, graphical user interfaces of 'CAD-PV' software tools are not yet available. (author)

  15. NEW COURSE NUMBER: ENG ME 585 ENG. MN 585 Interactive Computation for CAD/CAM Fall 2006

    E-Print Network [OSTI]

    Lin, Xi

    . Networked infrastructure for automation, supported by Rule-Based Decision- Support Systems (PDS/internet technology with CAD/CAM to provide an integrated platform for factory automation. No prior knowledge, and Operation of process-cells and factory automation in particular. It builds on the premises that: a

  16. Selection and implementation of a computer aided design and drafting (CAD/D) system

    SciTech Connect (OSTI)

    Davis, J.P.

    1981-01-01

    Faced with very heavy workloads and limited engineering and graphics personnel, Transco opted for a computer-aided design and drafting system that can produce intelligent drawings, which have associated data bases that can be integrated with other graphical and nongraphical data bases to form comprehensive sets of data for construction projects. Because so much time was being spent in all phases of materials and inventory control, Transco decided to integrate materials-management capabilities into the CAD/D system. When a specific item of material is requested on the graphics equipment, the request triggers production of both the drawing and a materials list. Transco plans to extend its computer applications into mapping tasks as well.

  17. CAD Assemblies Academic Resource Center

    E-Print Network [OSTI]

    Heller, Barbara

    Desk Inventor, which is free to students #12;Why are Assemblies Important? Assemblies are collections of parts for the Inventor software Prepared by Adin Goings #12;

  18. Impact of CAD on the submittal process 

    E-Print Network [OSTI]

    De Lapp, James Andrew

    2005-02-17

    of design intent from the architect and engineer to the specialty trade contractor for the production of shop drawings. The use of information technology to increase the ability to meet this intent is not being fully utilized today. A case study...

  19. Parallel GPU Algorithms for Mechanical CAD

    E-Print Network [OSTI]

    Krishnamurthy, Adarsh

    2010-01-01

    Computation (a) Race Car (b) V8 Engine (e) Trefoil (f)Freeform V8 Engine Engine Race Car Table 7.1: Complexity ofVolume Time(s) V8 Engine Engine Race Car Table 7.2: Volumes

  20. Curating Architectural 3D CAD Models

    E-Print Network [OSTI]

    Smith, MacKenzie

    Increasing demand to manage and preserve 3-dimensional models for a variety of physical phenomena (e.g., building and engineering designs, computer games, or scientific visualizations) is creating new challenges for digital ...

  1. Development of granular target for CADS

    E-Print Network [OSTI]

    McDonald, Kirk

    deposited by proton beam ~ X kW/cm^3 Industrial facility ~50MW=2.0GeV@25mA accelerator Spallation target, spheres, or plates to produce the neutrons, and coolant flowing between the elements for heat removal. · Liquid target options where a flowing liquid metal acts both as the source of neutrons and the heat

  2. Electronic Construction Coordination with AutoCAD

    E-Print Network [OSTI]

    Neal, Christopher

    2007-12-14

    to the bid process and job buyout. Shop drawing development was required to be completed utilizing zone and layer control. Drawing guidelines were developed to simplify compiling of multiple files into a single drawing. A key aspect of this project...

  3. USER INTERACTION WITH CAD MODELS WITH NONHOLONOMIC PARAMETRIC SURFACE CONSTRAINTS

    E-Print Network [OSTI]

    Utah, University of

    during the early, formulative design stages into kinematic and dynamic characteristics of a mechanism. We is an interesting case that can come up in kinematic and dynamic analysis of knee or spatial cam mechanisms present the advan- tages of kinematic representation of constraint equations in fully Cartesian

  4. Low Power CAD: Trends and Challenges Massoud Pedram

    E-Print Network [OSTI]

    Pedram, Massoud

    class of personal computing devices (digital pens, portable desktops, audio- and video-based multi- media products) as well as wireless communications and imaging systems (personal digital assistants the semiconductor industry has adopted a multifaceted approach, attacking the problem on three fronts: Reducing chip

  5. 3D Measurements in Images using CAD Models George Vosselman

    E-Print Network [OSTI]

    Vosselman, George

    the alignment. 1 Introduction Future geographical information systems will contain 3D and highly structured information. The development of procedures for the extraction of 3D object models from digital aerial imagery

  6. CADS: Core-Aware Dynamic Scheduler for Multicore Memory Controllers

    E-Print Network [OSTI]

    Sun, Xian-He

    Xian-He Sun Department of Computer Science Illinois Institute of Technology, Chicago, IL 60616, USA {eolmedo, sbyna, sun}@iit.edu Abstract Memory controller scheduling is crucial in multicore processors the computing power these processors offer. However, current multicore processors are using traditional memory

  7. Thermal-Aware CAD for Modern Integrated Circuits

    E-Print Network [OSTI]

    Logan, Sheldon Logan Paul

    2013-01-01

    in 3d circuits for power grid integrity. IEEE Design & Test1994. [60] S. R. Nassif. Power grid analysis benchmarks. Inbased algorithm for power grid design using locality. IEEE

  8. Distributed Object Oriented Data Structures and Algorithms for VLSI CAD

    E-Print Network [OSTI]

    Chandy, John A.

    61801, USA£ Sierra Vista Research, 236 N Santa Cruz Avenue, Los Gatos, CA 95030, USA Abstract. Proper

  9. Synthesis of Trustable ICs using Untrusted CAD Tools Miodrag Potkonjak

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    right management using watermarking [2], intellectual property passive [3] and active [4] metering providers, design houses, and foundries. Our objectives include the following desiderata: (i) The approach

  10. RAPID/Roadmap/13-CA-d | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/Water Use/Nevadaa < RAPID‎ | Roadmap Jump to:bformCA-d

  11. RAPID/Roadmap/14-CA-d | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/Water Use/Nevadaa < RAPID‎ | Roadmap JumpfWA-acCA-a

  12. RAPID/Roadmap/19-CA-d | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/Water Use/Nevadaa < RAPID‎ |aRAPID/Roadmap/19-CA-abd

  13. RAPID/Roadmap/8-CA-d | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/Water Use/Nevadaa <NV-b < RAPID‎WA-a < RAPID‎ad

  14. RAPID/Roadmap/7-CA-d | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report UrlNM-b < RAPID‎ | RoadmapAK-ab < RAPID‎ |cabc

  15. Downregulation of Cinnamyl Alcohol Dehydrogenase (CAD) Leads to Improved

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journal Article) | SciTech Connect Discriminationquenched chiralSaccharification

  16. Developing conservation plan for the Edwards Aquifer: Stakeholders reach consensus resolution to balance protection of endangered species and water use 

    E-Print Network [OSTI]

    Smith, Courtney

    2012-01-01

    ?eler is executive manager of science, intergovernmental relations and policy for the Guadalupe-Blanco River Authority. He also served as a member of EARIP. In response to the judgment, in ???? the Texas Legislature passed Senate Bill ????, which created...

  17. Computer-Aided Design & Applications, 7(4), 2010, 533-546 2010 CAD Solutions, LLC

    E-Print Network [OSTI]

    Igarashi, Takeo

    and a rapid prototyping system such as a three-dimensional (3D) printer that have dramatically decreased in which a three-dimensional (3D) geometrical modeling interface and a rigid body simulation are combined: Examples of mobiles [14]. Fig. 2: Examples of balance toys (Left: Ishiguro Co., Ltd.). In this paper, a 3D

  18. GeneJax: A Prototype CAD tool in support of Genome Refactoring

    E-Print Network [OSTI]

    Anand, Ishan

    2006-05-26

    Refactoring is a technique used by computer scientists for improving program design. The Endy Laboratory has adapted this process to make the genomes of biological organisms more amenable to human understanding and design ...

  19. CAD as a tool in urban design : a study in reunited Germany

    E-Print Network [OSTI]

    Jurkschat, Axel (Axel R. M.)

    1995-01-01

    Architecture is a phenomenon of space and time. Since ancient times mankind has found its place in space and time with the help of architecture. Thus architecture refers to more than just practical requirements, science ...

  20. CAD for 3D Circuits: Solutions and Challenges Sachin S. Sapatnekar

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    in the area of layout, thermal optimization, and power supply network design that are critical in the design. For a chip designer at the leading-edge, this presents a range of opportunities, and also a significant set; with the new horizons opened up by 3D, the range of choices increases, as does the level of complexity

  1. Whole-Chip ESD CAD Tools and Scalable ESD Device Modeling Methodology

    E-Print Network [OSTI]

    Wang, LI

    2015-01-01

    for finding critical discharging path under ESD stress ”,41 2.4.2 Critical Discharging Path48 Figure 2.21 Critical discharge path between VDD and GND (

  2. Learning from cases : retrieving cases in CAD systems based on design criteria

    E-Print Network [OSTI]

    Shih, Jau-Yung

    1991-01-01

    Architects usually regard case studies as an important way to study architecture. Cases stand for existing answers to real problems and provide resources for free interpretation. This thesis investigates encoding design ...

  3. MA Transmutation Performance Simulation and Accompanied Burning-up Analysis for C-ADS

    E-Print Network [OSTI]

    Miao, Ji-Lang; Chang, Zhen-Qi

    2012-01-01

    An accelerator-driven subcritical reactor functions well in incinerating high-level radiotoxic waste (HLW) as well as providing energy. China is on his way to establish such a facility to transmutate the annual 1000 tons of HLW. A neutronic analysis has been performed for a reference core with a special task of burning minor actinides 237Np, 241Am, 243Am and 244Cm. Instant operation parameters are determined, including neutron energy spectra, thermal power distribution and transmutation validation. Burning-up analysis is carried out to further confirm the incineration efficiency. The core parameters optimized in this work will be applied to simulate in-core fuel behavior in future research.

  4. A tutorial for the CAD program LayoutEditor LayoutEditor is available from

    E-Print Network [OSTI]

    Devoret, Michel H.

    example Side view Top view Si SiO2 Fill/isolation oxide LAYER 2 Gate oxide LAYER 3 Gate polysilicon LAYER

  5. Organizational Assessment Of Integrating CAD And Product Data Management Tools In The Furniture Industry

    E-Print Network [OSTI]

    Industry Furniture Manufacturing and Management Center Technical Report 1996-1997 Eric N. Wiebe Jennifer J of issues faced by furniture companies are given. The literature review closes by focusing on additional in manufacturing and design has popularized the concept of the virtual product database. Product Data Management

  6. CAD/CAM integration based on machining features for prismatic parts

    E-Print Network [OSTI]

    Hou, Min

    2008-01-01

    as a starting point for CAM systems to generate tool paths and NC programs. The user still needs to manually create the machining operations and define geometry, cutting tool, and various parameters for each operation. Features play an important role...

  7. Computer-Aided Design 39 (2007) 95111 www.elsevier.com/locate/cad

    E-Print Network [OSTI]

    Qian, Xiaoping

    2007-01-01

    and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL, 60616, United States Received 20 June techniques and fundamental understanding of material properties in functionally graded materials has made it possible to design and fabricate multifunctional heterogeneous objects. In this paper, we present

  8. Convergence acceleration techniques in CAD systems for grounding analysis in layered soils

    E-Print Network [OSTI]

    Colominas, Ignasi

    of real earthing grids in multilayer soils requires an out of range computational cost. In this paper we by ground rods vertically thrusted in certain places of the substation site. Thus, when a fault condition been systematically reported: the large computational costs re- quired in the analysis of real cases

  9. Computer-Aided Design & Applications, 7(a), 2010, bbb-ccc 2010 CAD Solutions, LLC

    E-Print Network [OSTI]

    Cheng, Fuhua "Frank"

    of standard landmarks using auto-regressive moving average based on anthropometry of the head and face is traditionally studied in the field of anthropometry. The literature is rich with insights about Anthropometry is a branch of medical research that deals with measuring and analyzing absolute quantities

  10. CumInCAD: Cumulative Index of Computer Aided Architectural Design Database Guide

    E-Print Network [OSTI]

    Yener, Aylin

    in as guest__anon. Guests do not have full access to the database. Enter terms in the Search for: box and it will search all words that you enter. Searches are conducted across all fields in the database (i.e., author on the topic you are researching. To do this... Use this: Search a single term Type in your term. Search

  11. Energy-aware architectures, circuits and CAD for field programmable gate arrays

    E-Print Network [OSTI]

    Honoré, Francis

    2006-01-01

    Field Programmable Gate Arrays (FPGAs) are a class of hardware reconfigurable logic devices based on look-up tables (LUTs) and programmable interconnect that have found broad acceptance for a wide range of applications. ...

  12. Matching CAD Object Models in Semantic Mapping Sven Albrecht, Thomas Wiemann, Martin Gunther, Joachim Hertzberg

    E-Print Network [OSTI]

    Behnke, Sven

    with a dishwasher is probably a kitchen) or the function of objects (a kitchen table has other functions than

  13. File:08-CA-d - CPCN for Transmission Projects (2).pdf | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1ORDExplorationInjectionPermitORDExpeditedPlantCommissioningProcess.pdf Jump8 -Information 8-CA-b

  14. Drought detective: Texas A&M professor works to develop drought prediction system 

    E-Print Network [OSTI]

    Smith, Courtney

    2011-01-01

    . Todd Vo?eler of the Guadalupe-Blanco River Authority in a ???? article for Texas Parks and Wildlife?s magazine. ?Drought prediction is essentially using something in the climate system known as memory, and the primary source of memory...

  15. Supporting Agile Modeling through Experimentation in an Integrated Urban Simulation Framework

    E-Print Network [OSTI]

    Anderson, Richard

    and contro- versial, as well as having significant economic, social, and environmental consequences. Urban. dg.o 2010, May 17-20, 2010, Puebla, Mexico. ACM [ISBN] 978-1-4503-0070-4/10/05 Urban modelers's circumstances. The UrbanSim system provides an environment for mod- elers to project the impacts of land use

  16. MFR PAPER 1033 Research determin es fatty aCid

    E-Print Network [OSTI]

    ~1 Preparation of Esters \\leth) I e\\ler lIere preparuJ u\\lng the mClhod :r, "ere \\cparated an d Idenlilied u\\lng , Zook E J Powell B Hackley J Emerson J Brooker. and G M Knobl

  17. Interoperation of heterogeneous CAD tools in Ptolemy II Jie Liu, Bicheng Wu, Xiaojun Liu, Edward A. Lee*

    E-Print Network [OSTI]

    California at Berkeley, University of

    , models of computation, tool interaction, Ptolemy II 1. INTRODUCTION Microelectromechanical systems (MEMS, for MEMS devices and mixed-signal circuits, it is essential to integrate tools with different Mo more refined and closer to the physical implementation. The current progress of MEMS technology

  18. OBJECT-ORIENTED CAD AND EXPERT BLADE DESIGN AT ROLLS-ROYCE by Daniel E. Whitney, Liaison Scientist, Manufacturing

    E-Print Network [OSTI]

    Whitney, Daniel

    software, a product that originally was meant to support creation of assembly drawings based on 3D models. It supports object-like definitions of models, including direct links between pipe or wire schematics like engine mounts but also some pumps and pipes on the engine's exterior. RR converts its CADDS data

  19. To appear in IEEE Trans. On CAD 1 Abstract--Partial shading is a serious obstacle to the effective

    E-Print Network [OSTI]

    Pedram, Massoud

    utilization of photovoltaic (PV) systems since it can result in a significant degradation in the PV system of a large-scale PV system comprised of 3 PV modules with 60 PV cells per module. Index Terms--Photovoltaic system, partial shading, photovoltaic module reconfiguration, dynamic programming. I. INTRODUCTION UE

  20. Proceedings CANCAM 2003, pages 106-107 CAD tools can be used to visualise a product once its

    E-Print Network [OSTI]

    Salustri, Filippo A.

    , flowcharts, IDEF, Modelica, and UML. Al- though our analysis continues, we do have some early results. Some.g. bond graphs and Modelica) are primarily for sys- tems analysis and assume that at least a systems level

  1. A CAD tool for the power estimation of CMOS, BiCMOS and BiNMOS gates 

    E-Print Network [OSTI]

    Islam, Kazi Inamul

    1995-01-01

    bias depletion capacitance Base-collector built-in voltage Base-collector profile exponent Fraction of B/C depletion capacitance connected to internal base node CJS VJS MJS FC TF Collector-substrate, zero bias capacitance Collector... carrier charge in the base. The normalized majority carrier charge in the base QB is given by an equation of the form: QB = ? + ? +Qs (2 4) where Q 1 BC BE (2. 5) (2. 6) VzF is the forward Early voltage and V~B is an equivalent reverse Early...

  2. Modification to the Monte Carlo N-Particle (MCNP) Visual Editor (MCNPVised) to read in Computer Aided Design (CAD) files

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report: AchievementsTemperatures Year 6 -FINAL PROJECT REPORTModification to the

  3. A review of "Laboring Women: Reproduction and Gender in New World Slavery" by Jennifer L. Morgan. 

    E-Print Network [OSTI]

    Elisa Oh

    2004-01-01

    be educated for the sake of society. All in all, Women Philosophers of the Seventeenth Century is pleas- ant to read, because it is lucidly written, and highly informative. Jennifer L. Morgan. Laboring Women: Reproduction and Gender in New World Slavery.... Philadelphia: University of Pennsylvania Press, 2004. xi + 279 pp. + 16 illus. $55.00. Review by ELISA OH, BOSTON UNIVERSITY. In Laboring Women: Reproduction and Gender in New World Sla- very, Jennifer L. Morgan explores how early modern English trav- elers...

  4. White Paper Powering Sustainable Low-Carbon Economies: Some Fact and Figures

    SciTech Connect (OSTI)

    Gilles J. Youinou

    2015-04-01

    In 2011, the world production of electricity was about 22.1 trillion kilowatt-hour1 (kWhe): 9.1 from coal, 4.8 from gas, 2.6 from nuclear, 1.1 from oil, 3.5 from hydropower and 1.0 from other sources (geothermal, solar, wind, biofuels). With a world population of about 7 billion in 2011, it corresponds to an average of 3,160 kWhe/year/capita. While most industrialized countries enjoy a high standard of living with, at least, 8,000 kWhe per year and per person, most developing countries live with less than 3,000 kWhe per year per person. The need for electricity is growing fast, especially in developing countries, and by 2040 the world production of electricity is projected to reach about 40 trillion kWhe.2 Assuming a world population of 10 billion and an average consumption of 6,000 kWhe per year per person in 2100 the world annual production of electricity could reach 60 trillion kWhe.

  5. F O R G I N G T H E L I N K 3-1 ow Impact Development (LID) represents one of the most progressive

    E-Print Network [OSTI]

    include a range of incentives such as an increase in floor to area ratio (FAR), rebates, and tax credits offer builders a cost-share and/or rebates whe

  6. Health assessment for Beckman Industries National Priorities List (NPL) Site, Porterville, Tulare County, California, Region 9. CERCLIS No. CAD048645444. Final report

    SciTech Connect (OSTI)

    Not Available

    1989-01-01

    The Beckman Industries site is on the National Priorities List. Beckman manufactures electronic-instrument assemblies, subassemblies, and printed-circuit boards. Industrial processes at the plant include electroplating and degreasing operations. Waste streams from these processes have included spent halogenated solvent, inorganic and acid solutions, salts, heavy metals laden solution, and plating-bath sludges. Ground-water contaminants of concern are: arsenic, cadmium, chromium(a), lead, nickel, 1,1-dichloroethene, 1,2-dichloroethane, 1,1,1-trichloroethane, and freon-113. The site is of potential public health concern because of the risk to human health resulting from possible exposure to hazardous substances at concentrations that may result in adverse health effects. Human exposure to VOCs, freon 113, and heavy metals may occur, be occurring, or have occurred via ingestion, dermal, or inhalation exposure to ground water. In addition, heavy metal (especially cadmium) exposure may occur through the ingestion of contaminated farm animals and their products.

  7. Approved Module Information for ME4505, 2014/5 Module Title/Name: CAD Principles & Materials Selection Module Code: ME4505

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    the opportunity become proficient in CAE virtual product development within the context of the research% Details - Presentation Individual Assignment - Yes 20% Details Research Seminar Presentation Individual and development of a new product in response to an executive brief. Upon completion the students will have

  8. Visit to Ricoh Tokyo offices, August 29, 1991 My hosts were Mr Ageishi, Director of the IMS Department, Dr Toriya, a CAD

    E-Print Network [OSTI]

    Whitney, Daniel

    off the many technologies that Ricoh supports, including R&D on neuro-chips (one chip with 256 small neuro-chips on it), voice recognition as a user interface (any person, limited vocabulary, one word

  9. The Effect of Digital Die Spacer on the Marginal Fit of Cad Pressed Lithium Disilicate Complete Coverage Copings: An SEM Assessment 

    E-Print Network [OSTI]

    Fischer, James

    2015-04-24

    The purpose of this in vitro study was to evaluate the marginal fit of pressed IPS e.max copings fabricated from a computer-aided designed and milled PMMA acrylic resin burnout coping of various cement spacer thicknesses. ...

  10. MathCAD model for the estimation of cost and main characteristics of air-cushion vehicles in the preliminary design stage

    E-Print Network [OSTI]

    Gougoulidis, Georgios

    2005-01-01

    In the naval architecture terminology, the term ACV (Air Cushion Vehicle) refers to this category of vehicles, in which a significant portion of the weight (or all the weight) is supported by forces arising from air pressures ...

  11. Intern experience at MEL, Inc.: an internship report 

    E-Print Network [OSTI]

    Chen, Chu-Chen, 1937-

    2013-03-13

    .....................................................52 H. Functions of MEL?s Micro-CAD and Mini-CAD System.........54 I. Suggested Training Timetable...............................56 J. Project Productivity at MEL................................57 K. Basic Economic Considerations for CAD...

  12. txH20: Volume 7, Number 2 (Complete) 

    E-Print Network [OSTI]

    Wythe, Kathy

    2012-01-01

    this opportunity to make substantial changes to water policy. He cited major changes made to water planning regulations a?er previous droughts, including methods of integrating di?erent water laws into a prior appropriations system a?er the ????s drought... to improve. Dr. Todd Vo?eler, executive manager of science, intergovernmental relations and policy for the Guadalupe-Blanco River Authority, said the state no longer has the surplus water it had from the reservoirs built a?er the drought of record...

  13. A technique optimization protocol and the potential for dose reduction in digital mammography

    E-Print Network [OSTI]

    processing and CAD, tomosynthesis, contrast-enhanced dual energy subtraction mammography, multimodality image

  14. Manufacturing Engineering Intern_Job Posting_42814 JJOOBB PPOOSSTTIINNGG

    E-Print Network [OSTI]

    Ravikumar, B.

    and Assembly (DFMA), Design / Process Failure Mode Analysis (FMEA) Experience using CAD software to produce

  15. The division of Machine Design

    E-Print Network [OSTI]

    Zhao, Yuxiao

    Requirement engineering Simulation Multi- disciplinary design VR CAD Robust optimization 3D- printing Product

  16. WEEK 1 DEADLINE DESCRIPTION: ME310 PROJECT 2 DR. C. ALEXANDER SIMPKINS

    E-Print Network [OSTI]

    Simpkins, Alex

    sketches, cad models, equations, code, pseudocode, etc. But you need to also provide a written description

  17. Small Saturating Inductors for More Compact Switching Power Supplies Luke Milner* Non-member

    E-Print Network [OSTI]

    Rincon-Mora, Gabriel A.

    to a load (i.e., an output vO) by energizing (from VIN) and de-energizing (to vO) an inductor LO in alternate phases, as Fig. 1a generally depicts. More specifically, a constant energizing voltage VE across LO energizes LO, increasing its current iL (whe

  18. " *.--S, * b different of the turbine's blades in

    E-Print Network [OSTI]

    Ranganathan, Jai

    The Economist #12;" *.--S, * b different of the turbine's blades in unpre&&l$$ ,and confusing ways. The clutter tbi!3-ba,useson the screen is made worse whe+%e signalb bounced around between different turbines-scaleversion atthe siteof a singlewind turbine. It was ableto show a different

  19. Proceedings of the 5th International Joint Conference on Natural Language Processing, pages 803810, Chiang Mai, Thailand, November 8 13, 2011. c 2011 AFNLP

    E-Print Network [OSTI]

    and Information Retrieval, Harbin Institute of Technology {whe,tliu}@ir.hit.edu.cn 2 Baidu {zhaoshiqi can be classified into two categories by the target of paraphrasing: (1) paraphrasing the input source category of paraphrasing training corpus, Bond et al. (2008) and Nakov (2008) paraphrase the source side

  20. tion Systems, 5,4, p.413429, 1991. [MA79]McCallum, D. and D. Avis, ``A linear time algorithm for finding the convex hull of a sim

    E-Print Network [OSTI]

    Bose, Prosenjit

    ]Macosko, C. W., RIM Fundamentals of Reaction Injection Molding, Hanser Publishers, New York, 1989. [Meg83 handbook, J.H. DuBois and W.I. Pribble (Eds.), Van Nostrand Reinhold Company Inc., New York, 1987. [RR92.F., and T.J. Opar (Eds.), Iron Castings Handbook, Iron casting society, Inc., 1981. [Whe87]Whelan, A

  1. From the beginning of the Yale OpenHand Project in Fall 2012 through Spring 2015, I have been the only one modifying the associated CAD files. This means that at the very least, the source files will be consistent,

    E-Print Network [OSTI]

    Dollar, Aaron M.

    different 3D printers or another set of desired fastener sizes. Finger design parameters include: linkage

  2. Surveillance study of health effects associated with cleanup of a hazardous waste site, Ralph Gray Trucking Company (a/k/a Westminster Tract Number 2633), Westminster, Orange County, California, Region 9: CERCLIS number CAD981995947

    SciTech Connect (OSTI)

    Hoshiko, S.; Underwood, M.C.; Smith, D.; DeLorenze, G.; Neuhaus, J.

    1999-04-01

    Excavation of a Superfund site, the Ralph Gray Truncking Company located in Westminster Orange County, California was anticipated to release sulfur dioxide and other chemicals. The California Department of Health Services, under cooperative agreement with the Agency for Toxic Substances and Disease Registry, conducted a surveillance study to assess whether illnesses were associated with cleanup activities. A panel primarily composed of more sensitive persons (n = 36) was selected to report daily respiratory symptoms and odors. Exposures included sulfur dioxide (SO{sub 2}) measurements and daily tonnage of waste removed. Analysis used Conditional Likelihood Regression and Generalized Estimating Equations (GEE) methods. Levels of SO{sub 2} were generally higher than usual ambient air, at times exceeding levels which can cause health effects among asthmatics in laboratory settings. Wheeze and cough were significantly associated with tonnage of waste removed, especially on days when the highest amounts of waste were removed. Upper respiratory symptoms were found to be associated with SO{sub 2}, and weak relationships were found with nausea and burning nose and SO{sub 2}.

  3. MEASURING RECURRENT AND NON-RECURRENT TRAFFIC CONGESTION

    E-Print Network [OSTI]

    Skabardonis, Alexander; Varaiya, P P; Petty, Karl

    2008-01-01

    California Highway Patrol (CHP/CAD) system is stored in theof the limitations imposed by the CHP incident data in ourto incidents reported in the CHP/CAD database. We know that

  4. Measuring Recurrent and Non-Recurrent Traffic Congestion

    E-Print Network [OSTI]

    Skabardonis, Alexander; Varaiya, Pravin P.; Petty, Karl F.

    2008-01-01

    California Highway Patrol (CHP/CAD) system is stored in theof the limitations imposed by the CHP incident data in ourto incidents reported in the CHP/CAD database. We know that

  5. Reduced impact logging minimally alters tropical rainforest carbon and energy exchange

    E-Print Network [OSTI]

    2011-01-01

    25–34. 19. de Sousa CAD, Elliot JR, Read EL, Figueira AM (amounts of 1. de Sousa CAD, Elliot JR, Read EL, FigueiraLitvak, Edward Lloyd Read, Robert Elliot, Chris Doughty, Dan

  6. Junction adhesion molecule expression influences hematopoietic and endothelial commitment of murine embryonic stem cells

    E-Print Network [OSTI]

    Stankovich, Basha Lorraine

    2009-01-01

    Collagen 4a Cx31 Cx43 Cx45 DDR E-Cad ICAM1 Integrin, b4Collagen 4a Cx31 Cx43 Cx45 DDR E- Cad ICAM1 Laminin A1 LIFR

  7. UConn -Dr. Shor's Engineered Microhabitats Group Page 1 Principles and Applications of Microfluidic Devices

    E-Print Network [OSTI]

    Shor, Leslie McCabe

    of Microfluidic Devices AutoCAD Design Lab - COMSOL import ready Part I. Introduction AutoCAD is a computer will be drawing a simple microfluidic device together to help you become more familiar with how to use Auto

  8. Directory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Ancillary eq native and cad files Subfolders in "Ancillary eq native and cad files" Go Up 1 Level Go Up 1 Level Up This folder contains no subfolders. Documents in "Ancillary eq...

  9. !! Experimentation & !! Ethics of Testing

    E-Print Network [OSTI]

    Agogino, Alice M.

    and preliminary prototypes "3D printing" of CAD models Wind Turbine Example Dimension 1200/768 "! Printing

  10. Serum phospholipid response to aerobic exercise training in pre- and postmenopausal women 

    E-Print Network [OSTI]

    Kamath, Adrian Elise

    1995-01-01

    ). High levels of LDL-C is strongly correlated with increased risk for CAD. The general lipid profile of premenopausal women is strongly associated with reduced rates of CAD (9). The beneficial lipoprotein profiles seen in premenopausal women change... that altering blood lipids to beneficial levels will help reduce the rates of CAD. When blood cholesterol levels are lowered, especially LDL-C, the risk of heart attacks caused by CAD is reduced (9). Another important factor implicated in the development...

  11. Evaluation of Demand Shifting with Thermal Mass in Two Large Commercial Buildings

    E-Print Network [OSTI]

    Xu, Peng

    2010-01-01

    in AutoCAD. The lighting power density and equipment loadand west. The lighting power density and equipment load were

  12. Issue # 04 By. Marvin Green (503) 6568367. Within each one of us lies a robot waiting to be created.

    E-Print Network [OSTI]

    would help fund our robotic projects. Our facilities include the following: auto cad, plasma­arc, heli­arc

  13. Texas State University-San Marcos Ingram School of Engineering

    E-Print Network [OSTI]

    Asiabanpour, Bahram - Department of Engineering and Technology, Texas State University

    #12;Concept Generation #12;CAD file Chamber Concept #12;FMEA #12;Chamber/Pump assembly Final product

  14. Distributed planning and control for modular robots with unit-compressible

    E-Print Network [OSTI]

    the ability to change shape to act as a reusable 3-D printing device; that is, a physical CAD system

  15. Pranitha Gottipati 6171 North Sheridan Road Apt. 1612 Chicago, IL 60660 (412) 736 3680 pranitha.gottipati@gmail.com

    E-Print Network [OSTI]

    Chisholm, Rex L.

    Office (Word, Excel, PowerPoint), Visual3D Familiarity with SPSS, Python programming, CAD, 3D printing

  16. Hydrogen Delivery Liquefaction & Compression

    E-Print Network [OSTI]

    are more capital efficient, it's hard to take the capital risk of building the plant too large. The process is very energy intensive Typical unit powers are on the order of 12.5 to 15 kWhe/kg The cost stack looks Refrigeration GN2 to N2 Liquefier To Feed H2 Flash Compressor H2 Recycle Compressor LN2 Add. To Storage/Fill #12

  17. 94 Queen Street Tel: 0141 221 1101 Email: customerservices@artstore.co.uk

    E-Print Network [OSTI]

    Strathclyde, University of

    208: Take Your Oil Painting Further 1 Start Date:13/01/2015 Tutor: Saul Robertson Materials Quantity 37ml Winton Oil Colour-Titanium White 1 37ml Winton Oil Colour-Lemon Yellow Hue 1 37ml Winton Oil Colour-Cad Yellow Dp Hue 1 37ml Winton Oil Colour-Cad Yellow Ochre 1 37ml Winton Oil Colour-Cad Red Dp

  18. 94 Queen Street Tel: 0141 221 1101 Email: customerservices@artstore.co.uk

    E-Print Network [OSTI]

    Strathclyde, University of

    207: Take Your Oil Painting Further 1 Start Date:12/01/2015 Tutor: Saul Robertson Materials Quantity 37ml Winton Oil Colour-Titanium White 1 37ml Winton Oil Colour-Lemon Yellow Hue 1 37ml Winton Oil Colour-Cad Yellow Dp Hue 1 37ml Winton Oil Colour-Cad Yellow Ochre 1 37ml Winton Oil Colour-Cad Red Dp

  19. 94 Queen Street Tel: 0141 221 1101 Email: customerservices@artstore.co.uk

    E-Print Network [OSTI]

    Strathclyde, University of

    305: Take Your Oil Painting Further 2 Start Date:13/04/2015 Tutor: Saul Robertson Materials Quantity 37ml Winton Oil Colour-Titanium White 1 37ml Winton Oil Colour-Lemon Yellow Hue 1 37ml Winton Oil Colour-Cad Yellow Dp Hue 1 37ml Winton Oil Colour-Cad Yellow Ochre 1 37ml Winton Oil Colour-Cad Red Dp

  20. INL '@work' heavy equipment mechanic

    SciTech Connect (OSTI)

    Christensen, Cad

    2008-01-01

    INL's Cad Christensen is a heavy equipment mechanic. For more information about INL careers, visit http://www.facebook.com/idahonationallaboratory.

  1. Optimized profile extraction and three dimensional reconstruction techniques applied to bubble shapes 

    E-Print Network [OSTI]

    Vasudevamurthy, Gokul

    2004-09-30

    and compatibility of different available software used in three dimensional reconstruction and high level programming. After a detailed analysis, MATLAB and RHINO CAD20 (Rhino 3.0) based on the NURBS methodology were selected to solve the TSP-SA and NURBS three...-dimensional Reconstruction. A free evaluation copy of the RHINO CAD was used to demonstrate the capability of the technique. Advanced features of the NURBS RHINO CAD?s? surface modeling tools like the rail revolve, match, and other advanced commands were studied and were...

  2. DAQMAN

    Energy Science and Technology Software Center (OSTI)

    002802WKSTN00 DAQMAN - A flexible configurable data acquisition system  http://www.bnl.gov/medical/NASA/CAD/NSRL_Data_Acquisition_System.asp 

  3. Discrepancy Between Clinician and Research Assistant in TIMI Score Calculation (TRIAGED CPU)

    E-Print Network [OSTI]

    Taylor, Brian T.; Mancini, Michelino

    2015-01-01

    retrospective analysis of a relatively high-risk populationin ACS risk prediction? A retrospective analysis 47. Manentiprevalence of “CAD Risk Factors. ” Our analysis showed that

  4. Method of altering lignin in trees

    DOE Patents [OSTI]

    MacKay, John (Raleigh, NC); O'Malley, David (Cary, NC); Whetten, Ross (Raleigh, NC); Sederoff, Ronald (Raleigh, NC)

    1998-01-01

    Methods of providing and breeding trees having more easily extractable lignin due to the presence of a cinnamyl alcohol dehydrogenase (Cad) null gene are presented.

  5. Method of altering lignin in trees

    DOE Patents [OSTI]

    MacKay, J.; O`Malley, D.; Whetten, R.; Sederoff, R.

    1998-10-20

    Methods of providing and breeding trees having more easily extractable lignin due to the presence of a cinnamyl alcohol dehydrogenase (Cad) null gene are presented. 16 figs.

  6. Particulate Air Pollution, Ambulatory Heart Rate Variability, and Cardiac Arrhythmia in Retirement Community Residents with Coronary Artery Disease

    E-Print Network [OSTI]

    Bartell, Scott M.; Longhurst, John; Tjoa, Thomas; Sioutas, Constantinos; Delfino, Ralph J.

    2013-01-01

    Health Perspectives PM, HRV, and arrhythmia in CAD patientsheart rate variability (HRV) has been associated with futurebetween cardiac arrhythmias, HRV, and exposures to air-

  7. Particulate air pollution, ambulatory heart rate variability, and cardiac arrhythmia in retirement community residents with coronary artery disease.

    E-Print Network [OSTI]

    Bartell, Scott M; Longhurst, John; Tjoa, Thomas; Sioutas, Constantinos; Delfino, Ralph J

    2013-01-01

    Health Perspectives PM, HRV, and arrhythmia in CAD patientsheart rate variability (HRV) has been associated with futurebetween cardiac arrhythmias, HRV, and exposures to air-

  8. IMPROVING ENERGY EFFICIENCY AND REDUCING COSTS IN THE DRINKING WATER SUPPLY INDUSTRY: An ENERGY STAR Resource Guide for Energy and Plant Managers

    E-Print Network [OSTI]

    Brown, Moya Melody, Camilla Dunham Whitehead, Rich

    2011-01-01

    CAD = Canadian dollars. SCADA = supervisory control and datasupervisory control and data acquisition (SCADA) systems.SCADA systems save energy by matching equipment performance

  9. ONTOLOGY-BASED MODELING OF PRODUCT FUNCTIONALITY PART 2: CONSIDERING USE AND UNINTENDED BEHAVIOR

    E-Print Network [OSTI]

    Mizoguchi, Riichiro

    ,miz}@ei.sanken.osaka-u.ac.jp Keywords: use-process modeling, CAD, conceptual design, ontologies, unintended behavior, FMEA Abstract

  10. Computer Engineer | Princeton Plasma Physics Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    support of daily experimental operations. The job entails a 4060 split of hardware and software engineering. Hardware activities employ a variety of CAD packages for chassis and...

  11. Computing at JLab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    JLab --- Accelerator Controls CAD CDEV CODA Computer Center High Performance Computing Scientific Computing JLab Computer Silo maintained by webmaster@jlab.org...

  12. Depression in Chinese American Immigrant Adults: An Exploration of Culturally Based Manifestations, Structure, and Measurement

    E-Print Network [OSTI]

    Wong, Rose

    2009-01-01

    1 Study 1: Depression in Chinese American immigrants: Social52 Study 3: The Chinese American Depression Scale (CADS-9):structure of depression in Chinese American immigrants: An

  13. Computer Engineer (NSTX-U) | Princeton Plasma Physics Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    support of daily experimental operations. The job entails a 4060 split of hardware and software engineering. Hardware activities employ a variety of CAD packages for chassis and...

  14. Approved Module Information for SE4026, 2014/5 Module Title/Name: Product Delivery Module Code: SE4026

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    content: Design innovation. Product introduction. CAD. Material selection. Lean and agile manufacture * Enhanced understanding of manufacturing and supply chain integration techniques, both current and emerging

  15. EARTH UNIVERSITY ANNOUNCEMENT OF FACULTY POSITION

    E-Print Network [OSTI]

    Bohnhoff, David

    , the Caribbean and Africa. EARTH's educational model is based on the principles of student centered, CAD). Renewable energy (photovoltaic, wind, hydraulic) and bioenergy (bioethanol, biodiesel, algae

  16. INL '@work' heavy equipment mechanic

    ScienceCinema (OSTI)

    Christensen, Cad

    2013-05-28

    INL's Cad Christensen is a heavy equipment mechanic. For more information about INL careers, visit http://www.facebook.com/idahonationallaboratory.

  17. Most Viewed Documents for Biology and Medicine: September 2014...

    Office of Scientific and Technical Information (OSTI)

    for Biology and Medicine: September 2014 Modification to the Monte Carlo N-Particle (MCNP) Visual Editor (MCNPVised) to Read in Computer Aided Design (CAD) Files Randolph Schwarz;...

  18. January/February 2014 RepRap UA workshop

    E-Print Network [OSTI]

    Escolano, Francisco

    . #12;5.Diseno of 3D printing objects. (5 hours) 5.1 OpenScad. 5.2 FreeCad. POSTAL ADDRESS Universidad

  19. 6D Hands: Markerless Hand Tracking for Computer Aided Design

    E-Print Network [OSTI]

    Popovic, Jovan

    6D Hands: Markerless Hand Tracking for Computer Aided Design Robert Y. Wang1,3 , Sylvain Paris2 {sylvain,jovan}@adobe.com 3 MIT CSAIL Cambridge, MA ABSTRACT Computer Aided Design (CAD) typically involves mechanical assembly of several CAD models using our hand-tracking system. ACM Classification: H5

  20. 1 Copyright 2006 by ASME Proceedings of IDETC/CIE 2006

    E-Print Network [OSTI]

    Agogino, Alice M.

    on back- of-the-envelope calculations due to a lack of efficient computer-aided design (CAD) tools of a new design problem. CBR utilizes past successful MEMS designs and sub-assemblies as building blocks, once a designer already has a general idea of what they want to make. These advanced CAD packages

  1. Mathematics in Teaching and Teaching of Mathematics FUNG Chun-Ip

    E-Print Network [OSTI]

    Siu, M.K.

    that CB : BA = AB : BD and CB : CA = CA : CD by showing that CBA ABD and CBA CAD. From this we obtain CB or inside of ABC, then there is a very natural answer: ABD, CAD and CBA! Now, do you see the role played

  2. Automation Direct Technology Scholarship Fund

    E-Print Network [OSTI]

    Kostic, Milivoje M.

    in Manufacturing Engineering Technology or Industrial Management & Technology (CAD or Manufacturing area of study or Industrial Management & Technology (CAD or Manufacturing area of study). Candidates must have a minimum NIU's university account. Eligibility: Candidates must be a declared major in Manufacturing Engineering Technology

  3. The Chemistry of Atherogenic High Density Lipoprotein 

    E-Print Network [OSTI]

    Moore, D'Vesharronne J.

    2012-07-16

    in the mass to charge ratios corresponding to apoC-I peaks in the serum subfractions from all CAD cohort patients. This shifting was not observed in the non-CAD cohort, which displayed apoC-I peaks in accordance with the known mass of this protein...

  4. Management Of Schema Evolution In Databases JosC Andany Michel LConard Carole Palisser

    E-Print Network [OSTI]

    Madiraju, Praveen

    fields of DataBaseManagementSystems(DBMS) such asComputer Aided Design (CAD). It is an important a synthesis of projects basedon the version problem in softwareengineeringandin CAD. In the DBMS field for the Farandole 2 DBMS [Estier,89], [Falquet,89]. This systemis based on a datasemanticsmodel closeto the extended

  5. Laboratoire de Biochimie Thorique Institut de Biologie Physico-Chimique

    E-Print Network [OSTI]

    Pasquali, Samuela

    is the first of its kind to explore protein folding. Peppytide is a 3D-printed coarse-grained model models. While tremendous advances have been made in computational biology, the cutting-edge 3D printing-centric transition from X-ray crystallography type data to CAD-based models to 3D-prints. This CAD

  6. In the Proceedings of the 17th Int. Workshop on Qualitative Reasoning, August 20-22, 2003. Brasilia, Brazil, p171-179

    E-Print Network [OSTI]

    Yan, Yuhong

    developed are demonstrated by a simplified automotive subsystem. Introduction The automobile industry has's behaviour by design engineers in a CAD environment. Matlab/Simulink is the target CAD platform due to its wide adoption in the automotive industry. Models in Matlab/Simulink are illustrated graphically

  7. Enhancing Product Development Through Parametric and Product Data Management Tools

    E-Print Network [OSTI]

    data management (PDM) software tools can be utilized better in the furniture industry. The central Trends In Computer-Aided Design And Manufacturing In The Furniture Industry, TR# 95-03) revealed that CAD in product engineering and in the factory for programming CNC machinery. In many companies, the use of CAD

  8. DESIGN-BUILD TEAMS AT AEROSPATIALE by Daniel E. Whitney, Liaison Scientist, Manufacturing

    E-Print Network [OSTI]

    Whitney, Daniel

    are made by outside contractors. The French data exchange standard SET (Standard Exchange and TransferDESIGN-BUILD TEAMS AT AEROSPATIALE by Daniel E. Whitney, Liaison Scientist, Manufacturing Summary this problem. History of CAD/CAM at Aerospatiale Computer-Aided Design and Computer-Aided Manufacturing (CAD

  9. Computer Aided Motion: Move3D within MOLOG T. Sim'eon, JP. Laumond, C. Van Geem and J. Cortes

    E-Print Network [OSTI]

    Cortés, Juan

    reports on our current effort for applying probabilistic path planning techniques to logistics. In the framework of logistics of industrial installa­ tions, CAD systems provide tools for the manipulation projects like operation, maintenance, building, CAD systems consistently enable dramatic savings in cost

  10. University of North Carolina at Wilmington Office of Facilities

    E-Print Network [OSTI]

    Olszewski Jr., Edward A.

    submitted. · All CAD drawings shall be purged of empty, unused, or non-essential drawing data. · All externally referenced data (XREF's) that were used in the Cad drawings shall be inserted and bound, using should be labeled with project name, type of drawing package (i.e. bid set, construction drawings, record

  11. Battery-Powered Digital CMOS Massoud Pedram

    E-Print Network [OSTI]

    Pedram, Massoud

    1 Page 1 USC Low Power CAD Massoud Pedram Battery-Powered Digital CMOS Design Massoud Pedram Power CAD Massoud Pedram Motivation Extending the battery service life of battery-powered micro in the VLSI circuit Y The battery system is assumed to be an ideal source that delivers a fixed amount

  12. Evaluating state markets for residential wind systems: Results from an economic and policy analysis tool

    E-Print Network [OSTI]

    Edwards, Jennifer L.; Wiser, Ryan; Bolinger, Mark; Forsyth, Trudy

    2004-01-01

    permitting.pdf Bergey Windpower Co. WindCad Turbineof the 2004 Global Windpower Conference, March 2004, ChicagoWind Energy Association WindPower 2002 Conference, 3-5 June

  13. Tactile, spatial interfaces for computer-aided design : superimposing physical media and computation

    E-Print Network [OSTI]

    Shamonsky, Dorothy J

    2003-01-01

    Computer-aided design (CAD) systems have become invaluable in three-dimensional creative design fields such as architecture and landscape architecture. However, these digital tools have not replaced the use of physical ...

  14. Engineering & Technology News | Industrial News Buzz Flexible electronics could help put Arrhythmic hearts back on rhythm

    E-Print Network [OSTI]

    Rogers, John A.

    Engineering & Technology News | Industrial News Buzz Flexible electronics could help put Arrhythmic hearts back on rhythm Home Engineering Store Products & Services Engineering Forum CAD Forum Engineering Design Data Engineering News Engineering Calculators Newsletter Register Advertise Feedback GD&T Training

  15. 4.173 Digital Mock-Up Workshop, Spring 2004

    E-Print Network [OSTI]

    Sass, Lawrence

    This is an advanced subject in computer modeling and CAD CAM fabrication in building large-scale prototypes and digital mock-ups within a studio setting. Prototypes and mock-ups are developed with the aid of outside ...

  16. 4.510 Digital Design Fabrication, Fall 2005

    E-Print Network [OSTI]

    Sass, Lawrence

    This class serves as an introductory subject in advanced computing, rapid prototyping, and CAD/CAM fabrication for architects. It focuses on the relationship between design and various forms of computer modeling as input, ...

  17. Universit degli Studi di Roma "La Sapienza" Presidenza della Facolt di Scienze MFN

    E-Print Network [OSTI]

    Di Pillo, Gianni

    -integrative, propedeutiche e di recupero con scadenza 17 ottobre 2013; Considerato che per mero errore materiale nel link pubblicato sul sito dell'Università La Sapienza è stato indicato il CAD di "Chimica industriale" anziché

  18. Collaborative Research: Advancing the Diagnosis and Quantification of Mitral Valve Regurgitation with

    E-Print Network [OSTI]

    Canic, Suncica

    Collaborative Research: Advancing the Diagnosis and Quantification of Mitral Valve Regurgitation in concept development and CAD design of experimental mitral valve prolapse constructs as an summer intern Workshop "Mathematics Guide Bioartificial Heart Valve Design" (Colombus, October 2013), Biomedical

  19. Developmental changes in expression, subcellular distribution, and function of Drosophila N-cadherin, guided by a cell-intrinsic program during

    E-Print Network [OSTI]

    Zinn, Kai

    experiments using Kir2.1 indicate that neuronal excitability is also dispensable for CadN downregulation, and motor axons (Inoue and Sanes, 1997; Iwai et al., 1997; Lee et al., 2001; Broadbent and Pettitt, 2002

  20. Terrainosaurus: realistic terrain synthesis using genetic algorithms 

    E-Print Network [OSTI]

    Saunders, Ryan L.

    2007-04-25

    a new, design-by-example method for synthesizing terrain height fields. In this approach, the user designs the layout of the terrain by sketching out simple regions using a CAD-style interface, and specifies the desired terrain characteristics...

  1. Wireless channel characterization and modeling in oil and gas refinery plants

    E-Print Network [OSTI]

    Savazzi, Stefano

    the cable route Sensors Gateway Flare unit Furnace structure Sensors Gateway Flare unit Furnace structure Fig. 1. 3D-CAD model of the industrial sites for testing: Flare unit (on top) and Furnace structure

  2. Presented by Robbie Pope, PE

    E-Print Network [OSTI]

    (up to 50% in complex areas) Direct construction from CAD design ­ no intermediate rework One 3D station (or GPS if accuracy isn't important!) Hammer (or drill) in each pin, minimum 1 line for each lane

  3. Privacy-Preserving Cox Regression for Survival Analysis Shipeng Yu, Glenn Fung, Romer Rosales, Sriram Krishnan, R. Bharat Rao

    E-Print Network [OSTI]

    Rosales, Rómer E.

    , Sriram Krishnan, R. Bharat Rao CAD and Knowledge Solutions, Siemens Medical Solutions USA, Inc. {shipeng.yu, glenn.fung, romer.rosales, sriram.krishnan, bharat.rao}@siemens.com Cary Dehing-Oberije, Philippe Lambin

  4. Platform-independent method for computer aided schematic drawings

    DOE Patents [OSTI]

    Vell, Jeffrey L. (Slingerlands, NY); Siganporia, Darius M. (Clifton Park, NY); Levy, Arthur J. (Fort Lauderdale, FL)

    2012-02-14

    A CAD/CAM method is disclosed for a computer system to capture and interchange schematic drawing and associated design information. The schematic drawing and design information are stored in an extensible, platform-independent format.

  5. Clearance Based Path Optimization for Motion Planning

    E-Print Network [OSTI]

    Geraerts, R.J.

    keep some minimum amount of clearance to obstacles. For example, in a nuclear power plant], manipulation planning [6], [7], [8], [9], CAD systems [10], virtual environ- ments [11], protein folding [12

  6. and Self-Organization for Dynamics

    E-Print Network [OSTI]

    CAD-Drawings: Udo Schminke Photos: Kai Bröking, Irene Böttcher-Gajewski, Will Brunner, Ragnar-Organization in the Visual Cortex 10 2.1.3.2 Self-Organized Criticality in the Activity Dynamics of Neural Networks 13 2

  7. Potential Project Topics The following are potential topics, in no particular order, for your term project. Most of

    E-Print Network [OSTI]

    Sobek II, Durward K.

    not on this list. Information technology: Product information management (PIM) Product data management (PDM) Integrated CAD/CAM/CIM/CAPP systems Design automation Expert systems Technology life cycles; innovation trajectories Lean product development Managing multiple product development projects / product portfolio

  8. Isotopic Implicit Surface Meshing Jean-Daniel Boissonnat

    E-Print Network [OSTI]

    Vegter, Gert

    blending of surfaces, with obvious applications in CAD or metamorphosis. Finally, this type: they might miss some connected components, or merge different components into a single one. Adaptive enumer

  9. Isotopic Implicit Surface Meshing Jean-Daniel Boissonnat

    E-Print Network [OSTI]

    Vegter, Gert

    for efficient blending of surfaces, with obvious applications in CAD or metamorphosis. Finally, this type guarantees: they might miss some connected components, or merge different components into a single one. Adap

  10. Database, Spatial Spatial databases are the foundation for computer-based applications involving spatially

    E-Print Network [OSTI]

    managed using a particular type of software called a database management system (DBMS) that allows be implemented in a GIS, in a computer-assisted design (CAD) system coupled with a DBMS, in a universal server

  11. ME 397/379M Solid Freeform Fabrication Syllabus, Spring 2009

    E-Print Network [OSTI]

    Seepersad, Carolyn Conner

    and Goals Solid freeform fabrication (SFF) is the use of additive manufacturing processes for producing parts directly from computer (CAD) models, without partspecific tooling. Rapid manufacturing of SFF technologies, their potential to support rapid prototyping and manufacturing, and some

  12. Advanced prototyping of variable impedance prosthetic sockets for trans-tibial amputees : polyjet matrix 3D printing of comfortable prosthetic sockets using digital anatomical data

    E-Print Network [OSTI]

    Sengeh, David Moinina

    2012-01-01

    This work, supported by the Media Lab Consortium, evaluates the design of a Variable Impedance Prosthetic (VIPr) socket for a transtibial amputee using computer-aided design and manufacturing (CAD/CAM). Compliant features ...

  13. PROFILE OF A HIGH SCHOOL INTERN: JOSHUA BLOOM | Princeton Plasma...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in the lab, Josh also discovered the 3D printer and became interested in the 3D printing process. He taught himself how to create 3D prototypes using AutoCAD (Computer...

  14. Wavelet-based multispectral face recognition LIU Dian-ting1

    E-Print Network [OSTI]

    Shyu, Mei-Ling

    1. CAD, CG & Network Laboratory, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China; 2. School of Electronic and Information Engineering, Dalian University of Technology, Dalian 116024, China; 3. Department of Labor Security, Xiangying Town Government, Dalian 116111

  15. Software Engineering Background Survey CSE435 (Fall 2014)

    E-Print Network [OSTI]

    , including tools) 21. Do you have any experience in the automotive systems field? (software, CAD systems, etc, work with physicians, etc.; explain) 23. List the platforms and the corresponding operating

  16. Directory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Export" Go Up 1 Level Go Up 1 Level Up Folder 1995 Spent Nuclear EIS Folder Ancillary eq native and cad files Folder CB&I Monthly Reports Folder CPP-603 Equipment...

  17. Bimetallic bars with local control of composition by three-dimensional printing

    E-Print Network [OSTI]

    Techapiesancharoenkij, Ratchatee, 1979-

    2004-01-01

    Three Dimensional Printing (3DP) is a process that enables the fabrication of geometrically complex parts directly from computer-aided design (CAD) models. The success of 3DP as an alternative manufacturing technology to ...

  18. Landscape Design, Construction and Management Concentration

    E-Print Network [OSTI]

    Isaacs, Rufus

    plant production, landscape design, construction and maintenance, marketing, management: HRT 213 (2) Landscape Maintenance HRT 213L(1) Landscape Maintenance Field Lab HRT 214 (2) Landscape and Turfgrass Business Operations HRT 219 (2) Landscape CAD HRT 220 (3) Annual

  19. Rheumatic Heart Disease and Beta-hemolytic Streptococci in Salvador, Brazil: A Study of Slum Health

    E-Print Network [OSTI]

    Tartof, Sara Yee

    2010-01-01

    medicine in Southern Brazil. Ann Emerg Med 2001 Feb;37(2):Horizonte, Minas Gerais, Brazil, 1999]. Cad Saude Publicaand sore throat in Salvador, Brazil. Covariate Slum Age 3-5

  20. Reactive binders for metal parts produced by Three Dimensional Printing

    E-Print Network [OSTI]

    Yoo, Helen Jean

    1997-01-01

    Three Dimensional Printing (3DP) is a solid free form fabrication process which enables the construction of parts directly from computer-aided design (CAD) models. In the current process, metal parts are produced by printing ...

  1. Visualization tools for SpecTRM

    E-Print Network [OSTI]

    Huang, Orton T., 1977-

    2003-01-01

    SpecTRM is a CAD system for digital automation. The intent of SpecTRM is to assist engineers in managing the requirements, design and evolution process aspects of developing software. The purpose of this thesis project is ...

  2. Design and implementation of a universal controller 

    E-Print Network [OSTI]

    Wei, Xiaoyan

    1993-01-01

    control programs which are developed using our hardware-in-the-loop personal computer CAD facility. The system also has a keyboard and an LCD display module for system operation monitoring....

  3. E.A. Krupinski (Ed.): IWDM 2008, LNCS 5116, pp. 265272, 2008. Springer-Verlag Berlin Heidelberg 2008

    E-Print Network [OSTI]

    Samet, Hanan

    deaths among women in m any parts of the world. In the United States alone, over forty thousand women die the effectiveness of CAD could improve the detection of breast cancer, and could improve the survival rate

  4. Computational Evaluation of a Transonic Laminar-Flow Wing Glove Design 

    E-Print Network [OSTI]

    Roberts, Matthew William

    2012-07-16

    Langley Research Center, and the NASA Dryden Flight Research Center. Upon completion of a wing glove design, a thorough computational evaluation was necessary to determine if the design can meet the experimental requirements. First, representative CAD...

  5. Simulation and Experimental Predictionss for the Structural Response of Satellites 

    E-Print Network [OSTI]

    McLelland, Angela N

    2013-12-12

    flight environments. While the methods presented within this document were exclusively employed with the SolidWorks Simulation software, all finite element analysis (FEA) techniques and computer aided design (CAD) best practices discussed are valid for a...

  6. Computer-aided optimization of DC/DC converters for automotive applications

    E-Print Network [OSTI]

    Neugebauer, Timothy C.

    This paper investigates computer-aided optimization of DC/DC converters, with a focus on converters for dual-voltage automotive electrical systems. A new CAD optimization approach based on Monte Carlo search methods is ...

  7. Polymer Engineering Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of stiffness development during cooling * Measurement of temperature field e.g. during coating Outlook: Online-monitoring of crystallization 3D CAD model STL format 1 2D...

  8. QUANTITATIVE ANALYSIS OF MASTICATORY PERFORMANCE IN VERTEBRATES

    E-Print Network [OSTI]

    Krovi, Venkat

    technology and image processing techniques were used to obtain CAD model of a skull and mandible of a bulldog in the development of new pet foods. We also examine the use of a robotic solution where a generic parallel

  9. Yuwen Zhang Fellow ASME

    E-Print Network [OSTI]

    Zhang, Yuwen

    can be built from CAD data 1 . The material used in SLS in- cludes amorphous e.g., polycarbonate conduction problem 2,3 . Kandis and Berg- man 4 present an experimental investigation and a numerical

  10. Hierarchical volumetric object representations for digital fabrication workflows

    E-Print Network [OSTI]

    Keeter, Matthew (Matthew Joseph)

    2013-01-01

    Modern systems for computer-aided design and manufacturing (CAD/CAM) have a history dating back to drafting boards, early computers, and machine shops with specialized technicians for each stage in a manufacturing workflow. ...

  11. The mitochondrial pathway of apoptosis in invertebrates

    E-Print Network [OSTI]

    Bender, Cheryl E.

    2007-01-01

    549-557. Quan, L. T. , Tewari, M. , O'Rourke, K. , Dixit,Physiol 141, 215-222. Tewari, M. , Quan, L. T. , O'Rourke,Lazebnik et al. , 1994; Tewari et al. , 1995). Both iCAD and

  12. Simulation of an Industrial Rankine Cycle Cogeneration Plant 

    E-Print Network [OSTI]

    Carattie, G.; Wepfer, W. J.

    1984-01-01

    Sophisticated designs of thermal systems may be evaluated, quickly and inexpensively, with the support of computer based system simulation techniques; i.e. CAD for thermal systems. Furthermore, the response of a thermal system to predicted periodic...

  13. Integration of CATIA/Smarteam into CERN's corporate engineering data management system

    E-Print Network [OSTI]

    Hakulinen, Timo; Friman, Per Olof; Pettersson, Thomas Sven; Van Uytvinck, E; Widegren, David; Fournier, G

    2008-01-01

    We present a short overview of the strategy defined to integrate the 3D CAD system CATIA/Smarteam into CERN's corporate Engineering and Equipment Data Management System (EDMS), which is used to manage the information about the Laboratory's installations and technical infrastructure. A brief description of the existing EDMS architecture is given, describing the available project life cycle management features, including CATIA/Smarteam. An overview of the design office requirements on the new CAD system is also presented.

  14. 94 Queen Street Tel: 0141 221 1101 Email: customerservices@artstore.co.uk

    E-Print Network [OSTI]

    Strathclyde, University of

    067: Learn to Paint (Using Oils) Start Date: 06/10/2014 Tutor: Saul Robertson Materials Quantity 37ml Winton Oil Colour-Titanium White 1 37ml Winton Oil Colour-Lemon Yellow Hue 1 37ml Winton Oil Colour-Cad Yellow Dp Hue 1 37ml Winton Oil Colour-Cad Red Dp Hue 1 37ml Winton Oil Colour-Perm Rose 1 37ml Winton

  15. Aula 2, 12/03/04 Algoritmos

    E-Print Network [OSTI]

    Mascarenhas, Walter Figueiredo

    Aula 2, 12/03/04 · Software · Hardware · Algoritmos #12;MAC0110 IME- 12/03/04 Software · WordCAD · O AutoCAD recebe suas ordens, faz as contas (algoritmos) e atualiza o desenho (algoritmos) e o zoom (mais algoritmos) de forma r´apida. #12;MAC0110 IME- 12/03/04 Passo a Passo · Ap´os a atualizac¸ ~ao o

  16. Lung Nodule Detection in Screening Computed Tomography

    E-Print Network [OSTI]

    Gori, I; Cerello, P; Cheran, S C; De Nunzio, G; Fantacci, M E; Kasae, P; Masala, G L; Pérez-Martínez, A; Retico, A

    2007-01-01

    A computer-aided detection (CAD) system for the identification of pulmonary nodules in low-dose multi-detector helical Computed Tomography (CT) images with 1.25 mm slice thickness is presented. The basic modules of our lung-CAD system, a dot-enhancement filter for nodule candidate selection and a neural classifier for false-positive finding reduction, are described. The results obtained on the collected database of lung CT scans are discussed.

  17. ER100/PPC184/ER200/PPC284, Fall 2014 Energy Units & Conversions, Global Energy Use

    E-Print Network [OSTI]

    Kammen, Daniel M.

    ft3 natural gas g. 4.490x1012 kWhe/yr x 1 0.14 x 1 2· 5.7 x 1 365 = 1.5x1010 m2 solar panels h.6106 1 x 1 106 = 2.3x107 M J/kg Natural gas = 3.9107 3 x 3 0.80 x 1 106 = 49 MJ/kg Oil = 6.1109 x-yr x 1 gal/30 mi = 4x10^8 gal gas saved/yr 2. 1x10^6 vehicles x 13000 mi/vehicle-yr x 1 kWh/5 mi = 2.6x

  18. Role of Luddism on Innovation Diffusion

    E-Print Network [OSTI]

    Mellor, Andrew; Redner, Sidney; Rucklidge, Alastair M; Ward, Jonathan A

    2015-01-01

    We generalize the classical Bass model of innovation diffusion to include a new class of agents --- Luddites --- that oppose the spread of innovation. Our model also incorporates ignorants, susceptibles, and adopters. When an ignorant and a susceptible meet, the former is converted to a susceptible at a given rate, while a susceptible spontaneously adopts the innovation at a constant rate. In response to the \\emph{rate} of adoption, an ignorant may become a Luddite and permanently reject the innovation. Instead of reaching complete adoption, the final state generally consists of a population of Luddites, ignorants, and adopters. The evolution of this system is investigated analytically and by stochastic simulations. We determine the stationary distribution of adopters, the time needed to reach the final state, and the influence of the network topology on the innovation spread. Our model exhibits an important dichotomy: when the rate of adoption is low, an innovation spreads slowly but widely; in contrast, whe...

  19. Mapping the Galaxy Color-Redshift Relation: Optimal Photometric Redshift Calibration Strategies for Cosmology Surveys

    E-Print Network [OSTI]

    Masters, Daniel; Stern, Daniel; Ilbert, Olivier; Salvato, Mara; Schmidt, Samuel; Longo, Giuseppe; Rhodes, Jason; Paltani, Stephane; Mobasher, Bahram; Hoekstra, Henk; Hildebrandt, Hendrik; Coupon, Jean; Steinhardt, Charles; Speagle, Josh; Faisst, Andreas; Kalinich, Adam; Brodwin, Mark; Brescia, Massimo; Cavuoti, Stefano

    2015-01-01

    Calibrating the photometric redshifts of >10^9 galaxies for upcoming weak lensing cosmology experiments is a major challenge for the astrophysics community. The path to obtaining the required spectroscopic redshifts for training and calibration is daunting, given the anticipated depths of the surveys and the difficulty in obtaining secure redshifts for some faint galaxy populations. Here we present an analysis of the problem based on the self-organizing map, a method of mapping the distribution of data in a high-dimensional space and projecting it onto a lower-dimensional representation. We apply this method to existing photometric data from the COSMOS survey selected to approximate the anticipated Euclid weak lensing sample, enabling us to robustly map the empirical distribution of galaxies in the multidimensional color space defined by the expected Euclid filters. Mapping this multicolor distribution lets us determine where - in galaxy color space - redshifts from current spectroscopic surveys exist and whe...

  20. Baseload Nitrate Salt Central Receiver Power Plant Design Final Report

    SciTech Connect (OSTI)

    Tilley, Drake; Kelly, Bruce; Burkholder, Frank

    2014-12-12

    The objectives of the work were to demonstrate that a 100 MWe central receiver plant, using nitrate salt as the receiver coolant, thermal storage medium, and heat transport fluid in the steam generator, can 1) operate, at full load, for 6,400 hours each year using only solar energy, and 2) satisfy the DOE levelized energy cost goal of $0.09/kWhe (real 2009 $). To achieve these objectives the work incorporated a large range of tasks relating to many different aspects of a molten salt tower plant. The first Phase of the project focused on developing a baseline design for a Molten Salt Tower and validating areas for improvement. Tasks included a market study, receiver design, heat exchanger design, preliminary heliostat design, solar field optimization, baseline system design including PFDs and P&IDs and detailed cost estimate. The baseline plant met the initial goal of less than $0.14/kWhe, and reinforced the need to reduce costs in several key areas to reach the overall $0.09/kWhe goal. The major improvements identified from Phase I were: 1) higher temperature salt to improve cycle efficiency and reduce storage requirements, 2) an improved receiver coating to increase the efficiency of the receiver, 3) a large receiver design to maximize storage and meet the baseload hours objective, and 4) lower cost heliostat field. The second Phase of the project looked at advancing the baseline tower with the identified improvements and included key prototypes. To validate increasing the standard solar salt temperature to 600 °C a dynamic test was conducted at Sandia. The results ultimately proved the hypothesis incorrect and showed high oxide production and corrosion rates. The results lead to further testing of systems to mitigate the oxide production to be able to increase the salt temperature for a commercial plant. Foster Wheeler worked on the receiver design in both Phase I and Phase II looking at both design and lowering costs utilizing commercial fossil boiler manufacturing. The cost and design goals for the project were met with this task, but the most interesting results had to do with defining the failure modes and looking at a “shakedown analysis” of the combined creep-fatigue failure. A separate task also looked at improving the absorber coatings on the receiver tubes that would improve the efficiency of the receiver. Significant progress was made on developing a novel paint with a high absorptivity that was on par with the current Pyromark, but shows additional potential to be optimized further. Although the coating did not meet the emissivity goals, preliminary testing the new paint shows potential to be much more durable, and potential to improve the receiver efficiency through a higher average absorptivity over the lifetime. Additional coatings were also designed and modeled results meet the project goals, but were not tested. Testing for low cycle fatigue of the full length receiver tubes was designed and constructed, but is still currently undergoing testing. A novel small heliostat was developed through an extensive brainstorming and down select. The concept was then detailed further with inputs from component testing and eventually a full prototype was built and tested. This task met or exceeded the accuracy and structure goals and also beat the cost goal. This provides a significant solar field costs savings for Abengoa that will be developed further to be used in future commercial plants. Ultimately the $0.09/kWhe (real 2009 $) and 6,400 hours goals of the project were met.

  1. Phase II Final Report

    SciTech Connect (OSTI)

    Schuknecht, Nate; White, David; Hoste, Graeme

    2014-09-11

    The SkyTrough DSP will advance the state-of-the-art in parabolic troughs for utility applications, with a larger aperture, higher operating temperature, and lower cost. The goal of this project was to develop a parabolic trough collector that enables solar electricity generation in the 2020 marketplace for a 216MWe nameplate baseload power plant. This plant requires an LCOE of 9¢/kWhe, given a capacity factor of 75%, a fossil fuel limit of 15%, a fossil fuel cost of $6.75/MMBtu, $25.00/kWht thermal storage cost, and a domestic installation corresponding to Daggett, CA. The result of our optimization was a trough design of larger aperture and operating temperature than has been fielded in large, utility scale parabolic trough applications: 7.6m width x 150m SCA length (1,118m2 aperture), with four 90mm diameter × 4.7m receivers per mirror module and an operating temperature of 500°C. The results from physical modeling in the System Advisory Model indicate that, for a capacity factor of 75%: The LCOE will be 8.87¢/kWhe. SkyFuel examined the design of almost every parabolic trough component from a perspective of load and performance at aperture areas from 500 to 2,900m2. Aperture-dependent design was combined with fixed quotations for similar parts from the commercialized SkyTrough product, and established an installed cost of $130/m2 in 2020. This project was conducted in two phases. Phase I was a preliminary design, culminating in an optimum trough size and further improvement of an advanced polymeric reflective material. This phase was completed in October of 2011. Phase II has been the detailed engineering design and component testing, which culminated in the fabrication and testing of a single mirror module. Phase II is complete, and this document presents a summary of the comprehensive work.

  2. CADCAM-009: VERTRAN user's manual

    SciTech Connect (OSTI)

    Blackledge, M.A.

    1985-01-01

    Sandia National Laboratories has been assigned Lead Lab responsibility by the Department of Energy (DOE) for integrating computer-aided design/computer-aided manufacturing (CAD/CAM) activities throughout DOE's Nuclear Weapons Complex (NWC). A primary objective is automating the exchange of product definition data within the NWC. It is essential that data integrity be preserved and verified following each such data exchange. VERTRAN (for VERification of TRANsferred data) is a software based method for detecting differences in the geometric data of a computer product definition file that has been transferred from one CAD system to another. Complete user instructions and program responses are provided.

  3. Power Deposition on Tokamak Plasma-Facing Components

    E-Print Network [OSTI]

    Arter, Wayne; Fishpool, Geoff

    2014-01-01

    The SMARDDA software library is used to model plasma interaction with complex engineered surfaces. A simple flux-tube model of power deposition necessitates the following of magnetic fieldlines until they meet geometry taken from a CAD (Computer Aided Design) database. Application is made to 1) models of ITER tokamak limiter geometry and 2) MASTU tokamak divertor designs, illustrating the accuracy and effectiveness of SMARDDA, even in the presence of significant nonaxisymmetric ripple field. SMARDDA's ability to exchange data with CAD databases and its speed of execution also give it the potential for use directly in the design of tokamak plasma facing components.

  4. An adaptive framework for 'single shot' motion planning 

    E-Print Network [OSTI]

    Jones, Christopher V

    2013-02-22

    with CAD models and Product Vtston, their CAD animation package. References (1) J. M. Ahuactzin and K. Gnpta. A motion planning based approach for inverse kinematics of redundant roboLs: The kinematic roadmap. In Proc. IRZZ Int. Conf. Robot. ztntom. (IC...'RA), pages 3609 ? 3614, 1997. 19 [2] N. M. Amato, O. B. Bayazit, L. K. Dale, C, V. Jones, and D. Valiejo. Choosing good distance metrics and local planners for probabilistic roadmap methods. In Proc. IEEE Iut. Conf. Robot. Autom. (ICRA), pages 630 ? 637...

  5. Studies on Cicadella hieroglyphica

    E-Print Network [OSTI]

    Hackman, Lucy McFarland

    1922-01-01

    The following notes on the l ife history of Ci cad el la hi eroglyphi ca consist of observations made from specimens in the field and in the laboratory, A gr owth of young willows along the Kansas river offered a splendid opportunity for the former..., for there Ci cad ell a hi eroglyphi ca may be found at all seasons in very large numbers. The laboratory observations were made from specimens collected at this place, and reared on willow in the laboratory. The most satisfactory results were obtained...

  6. Multi-scale analysis of lung computed tomography images

    E-Print Network [OSTI]

    Gori, I; Fantacci, M E; Martinez, A Preite; Retico, A; De Mitri, I; Donadio, S; Fulcheri, C; Gargano, G; Magro, R; Santoro, M; Stumbo, S; 10.1088/1748-0221/2/09/P09007

    2009-01-01

    A computer-aided detection (CAD) system for the identification of lung internal nodules in low-dose multi-detector helical Computed Tomography (CT) images was developed in the framework of the MAGIC-5 project. The three modules of our lung CAD system, a segmentation algorithm for lung internal region identification, a multi-scale dot-enhancement filter for nodule candidate selection and a multi-scale neural technique for false positive finding reduction, are described. The results obtained on a dataset of low-dose and thin-slice CT scans are shown in terms of free response receiver operating characteristic (FROC) curves and discussed.

  7. Capillary Break Beneath a Slab: Polyethylene Sheeting over Aggregate; Southwestern Pennsylvania (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-07-01

    This document provides content for three areas of the Building America Solution Center. First, "Insulating Closed Crawlspace Walls and Band Joist Area" describes how to install rigid foam insulation on the interior perimeter walls and band joist area in closed crawlspace foundations of homes. Second, "Removing Construction Debris from Flexible Ducts" describes how to clean flexible ducts after construction or major renovation of a home to remove debris resulting from building materials, particularly airborne dust and particulates. Third, images, CAD drawings, and a case study illustrate right and wrong ways to apply polyethylene sheeting over aggregate. Similarly, a CAD drawing is included that illustrates the use of a concrete slab over polyethylene.

  8. Caroline Cvetkovic Research Description Summary

    E-Print Network [OSTI]

    Bashir, Rashid

    . Fabrication and SLA: We fabricate these cantilevers with a 3D stereolithographic printer, a layer-by-layer rapid prototyping system. The 3D stereo-lithographic printing apparatus uses a high wavelength UV laser-by-layer method. The pattern is defined in the computer through 3D reconstruction of CAD software. A mixture

  9. EvoFab: A Fully Embodied Evolutionary John Rieffel and Dave Sayles

    E-Print Network [OSTI]

    Rieffel, John

    prototpying 3-D printers, an increasing number of evolved designs have been fabricated in the real world;2 Rieffel & Sayles were 3D CAD models which could then be printed directly by rapid protyping 3D printers", drew a 3-D model of the antenna. Fitness was determined by measuring the performance of the design

  10. A Hox Gene Inspired Generative Approach to Evolving Robot Morphology

    E-Print Network [OSTI]

    Glette, Kyrre

    , embryogenic encoding 1. INTRODUCTION Currently, bothrigid bodysimulators and prototypingtools such as 3D-printers-life reproduction by automatically gen- erating CAD files, 3D printing the limbs, and attaching off- the-shelf servo and control were reproduced and tested in real life. The repro- duction was done using 3D

  11. International Corporate Leadership Programme CASE STUDY -Summer Placement Report

    E-Print Network [OSTI]

    Berzins, M.

    cost savings of design change. · Organise supply chain of new products to the company. · Change all CAD to arrive at aftermarket solutions for customers Business case · Cost reduction allowed for higher profits. · Reduction in labour cost helped future feasibility of manufacturing in the UK an extremely tough climate

  12. College of Engineering and Computer Science Aerospace Engineering Name

    E-Print Network [OSTI]

    Mohan, Chilukuri K.

    of Aero. Vehicles 4 AEE446 Propulsion 3 AEE471 Des. & Anal. of Aero. Struct. 4 AEE472 Syn. of Aerospace Systems 4 AEE577 Space Flt. & Rockets 3 MAE184 Engr. Graphics & CAD 3 MAE251 Thermodynamics 4 MAE315 Mech/Aero

  13. AIAA 20033429 High-Fidelity Aero-Structural Design

    E-Print Network [OSTI]

    Stanford University

    AIAA 2003­3429 High-Fidelity Aero-Structural Design Using a Parametric CAD-Based Model Juan J 500, Reston, VA 20191­4344 #12;AIAA 2003­3429 High-Fidelity Aero-Structural Design Using a Parametric Cambridge, MA 02139, U.S.A. This paper presents two major additions to our high-fidelity aero

  14. A study of microstrip T-juction discontinuity effects and modeling on GAAS substrates 

    E-Print Network [OSTI]

    Guill, Dennis Jarrett

    1999-01-01

    . Currently, GaAs T-junction discontinuity effects and circuit models are not fully understood nor accurate. This thesis thoroughly characterizes 100 um thick GaAs based microstrip T-junction discontinuity effects. This thesis also provides a new CAD based...

  15. Medial design of blades for hydroelectric turbines and ship propellers M. Rossgatterera

    E-Print Network [OSTI]

    Jüttler, Bert

    Medial design of blades for hydroelectric turbines and ship propellers M. Rossgatterera , B. J Abstract We present a method for constructing blades of hydroelectric turbines and ship propellers based. Keywords: CAD-model, B-spline representation, hydroelectric turbine blade, propeller blade, medial axis

  16. United Nations/Nigeria Workshop on Space Law "Meeting international responsibilities and

    E-Print Network [OSTI]

    Glass, Ian S.

    United Nations/Nigeria Workshop on Space Law "Meeting international responsibilities and addressing domestic needs" 21-24 November 2005 Abuja, Nigeria Rockview Hotel (Royale), Plot 374/789 Cad Zone A8, Adetokunbo Ademola Crescent, Wuse II Abuja, Nigeria PRELIMINARY DRAFT PROGRAMME (as at 03 August 2005

  17. Cancer Letters 77 (1994) 183-189 The application of fractal analysis to mammographic

    E-Print Network [OSTI]

    Priebe, Carey E.

    1994-01-01

    tissue classification Carey E. Priebe*a, Jeffrey L. Solka", Richard A. Loreya, George W. RoEersa, Wendy L the many tissue types. Based on a lim- ited number of cases of digitized mammograms, our computer increased medical costs. Ad- ditionally, a successful CAD system could aid radiologists in evaluating

  18. IEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 21, NO. 12, DECEMBER 2002 1461 Edge Displacement Field-Based Classification for

    E-Print Network [OSTI]

    Tomasi, Carlo

    -Based Classification for Improved Detection of Polyps in CT Colonography Burak Acar*, Christopher F. Beaulieu, Salih B invasive alternative to FOC. It would be desirable to have computer-aided detection (CAD) algorithms tomography data by classification of the changes in the location of the edges in the two-dimensional plane

  19. Discovering Discriminative Cell Attributes for HEp-2 Specimen Image Classification

    E-Print Network [OSTI]

    Sanderson, Conrad

    Discovering Discriminative Cell Attributes for HEp-2 Specimen Image Classification Arnold Wiliem1 in developing Computer Aided Diagnostic (CAD) systems for improving the reliability and consistency of pathology- ther step by focussing on the specimen image classification problem itself. Our system is able

  20. FreeD A Freehand Digital Sculpting Tool Responsive Environments Group

    E-Print Network [OSTI]

    with the tool. Author Keywords Computer-Aided Design (CAD); Craft; Digital Fabrication; Carving; Milling. ACMFreeD ­ A Freehand Digital Sculpting Tool Amit Zoran Responsive Environments Group MIT Media Lab@media.mit.edu ABSTRACT In this paper, we present an approach to combining digital fabrication and craft, emphasizing

  1. 120 IEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 29, NO. 1, JANUARY 2010 Computer-Aided Detection of Polyps in CT

    E-Print Network [OSTI]

    van Vliet, Lucas J.

    120 IEEE TRANSACTIONS ON MEDICAL IMAGING, VOL. 29, NO. 1, JANUARY 2010 Computer-Aided Detection--We present a computer-aided detection (CAD) system for computed tomography colonography that orders and supervised classification. The characteris- tics of the detection step lead to specific choices

  2. X-ray Categorization and Spatial Localization of Chest Pathologies

    E-Print Network [OSTI]

    Goldberger, Jacob

    -ray, chest radiography, visual words, Computer-Aided Diagnosis (CAD), region-of-interest (ROI). 1 increased exponentially, due to the progress in digital med- ical imaging techniques and patient image that must be reviewed by radiologists. This has led to a concomitant demand for computerized tools to aid

  3. The effect of the neuropeptide proctolin on the hindgut of the crayfish, Procambarus clarkii 

    E-Print Network [OSTI]

    Sylvia, Victor Louis

    1981-01-01

    Qroo e. Proc. '1st. '. cad. Sci. V 0 4(~'I ;01 e, . 'CQ ?, er i" the 1 0 J. L. : Ph I he incest'nal co oc "den, -: r =, 1 ac -' -' 0 r 10:" Qf lecula" ar -. . Se, 1. . for i 0- 519 1 iI IC (10'? 1) c;, nl 1 0 1 50 VITA The author...

  4. Mask Making in the NanoLab (Optical Pattern Generator)

    E-Print Network [OSTI]

    California at Irvine, University of

    design or arcs. Pattern Generator charge: $40.80/hour. There is a minimum 30 minute pattern generatorMask Making in the NanoLab (Optical Pattern Generator) Layout To submit a design, use any CAD software which generates a GDS, TDB or CIF file. GDS and TDB files need to be converted for the pattern

  5. Computer-Aided Design 43 (2011) 13191321 Contents lists available at SciVerse ScienceDirect

    E-Print Network [OSTI]

    Hahmann, Stefanie

    2011-01-01

    Computer-Aided Design 43 (2011) 1319­1321 Contents lists available at SciVerse Science invited plenary talks by academic and industrial luminaries, Ken Clarkson (IBM Almaden Research CenterDirect Computer-Aided Design journal homepage: www.elsevier.com/locate/cad Preface The 2011 SIAM Conference

  6. A Universal Level Converter Towards the Realization of Energy Efficient Implantable Drug Delivery

    E-Print Network [OSTI]

    Mohanty, Saraju P.

    A Universal Level Converter Towards the Realization of Energy Efficient Implantable Drug Delivery VLSI Design and CAD Laboratory (VDCL), University of North Texas, Denton, TX 76203, USA. 2 Electrical many side effects, such as reduction in battery life time, increase in operating tempera- ture

  7. RAPID COMMUNICATIONS IN MASS SPECTROMETRY Rapid Commun. Mass Spectrom. 2004; 18: 27062712

    E-Print Network [OSTI]

    Kim, Myung Soo

    a tryptophanyl residue Joo Yeon Oh, Jeong Hee Moon and Myung Soo Kim* National Creative Research Initiative mass spectrometry.7,8 The internal energy that ions acquire in the MALDI process or via colli- sional has been attempted also.11­13 Compared with CAD, PD may be considered a clean technique without

  8. BEHAVIORAL ASSUMPTION-BASED PREDICTION FOR HIGH-LATENCY HIDING IN MOBILE GAMES

    E-Print Network [OSTI]

    Bidarra, Rafael

    Carpentier and Rafael Bidarra Computer Graphics and CAD/CAM Group Faculty of Electrical Engineering assumptions, designed to be suitable for racing titles. Although these assumptions limit the accuracy it possible to create a real-time multi-player race game using today's GPRS network. INTRODUCTION The widely

  9. Generating Structurally Complex Test Cases by Data Mutation: A Case Study of Testing an Automated Modelling Tool

    E-Print Network [OSTI]

    Zhu, Hong

    cases is difficult and expensive, especially for testing software systems whose input is structurally is one of the most difficult and expensive tasks in software testing, especially for software systems programming languages, XML document processor, CAD software, etc. To test such a software system adequately

  10. DIVE: Database Integration for Virtual Engineering Hans-Peter Kriegel1

    E-Print Network [OSTI]

    Kriegel, Hans-Peter

    ://www.dbs.informatik.uni-muenchen.de {kriegel, poetke, seidl}@dbs.informatik.uni-muenchen.de 2 Volkswagen AG http://www.volkswagen.de andreas5.mueller@volkswagen.de Abstract This demonstration presents a spatial database integration for novel CAD

  11. Lithium Polymer (LiPo) Battery Usage Lithium polymer batteries are now being widely used in hobby and UAV applications. They work

    E-Print Network [OSTI]

    Langendoen, Koen

    Lithium Polymer (LiPo) Battery Usage 1 Lithium polymer batteries are now being widely used in hobby nickel metal and ni-cad batteries. But with this increase in battery life come potential hazards. Use batteries with a battery charger specifically designed for lithium polymer batteries. As an example, you

  12. Identifying the Volcanic Eruption Depicted in a Neolithic Painting at Catalhoyuk, Central Anatolia, Turkey

    E-Print Network [OSTI]

    Harrison, Mark

    Anatolia, Turkey Axel K. Schmitt1 *, Martin Danisi´k2 , Erkan Aydar3 , Erdal S¸en4 , Inan Ulusoy4 , Oscar M Zealand, 3 ATERRA R&D, Yuksel Cad. 30/8, Kizilay, Ankara, Turkey, 4 Department of Geological Engineering, Hacettepe University, Beytepe, Ankara, Turkey Abstract A mural excavated at the Neolithic C¸atalho¨yu¨k site

  13. Department of Mechanical and Nuclear Engineering Spring 2012 Heavy-Duty Diesel Engine Friction Reduction Testing and Analysis

    E-Print Network [OSTI]

    Demirel, Melik C.

    PENNSTATE Department of Mechanical and Nuclear Engineering Spring 2012 Heavy-Duty Diesel Engine Friction Reduction Testing and Analysis Overview Volvo Group Powertrain Engineering is interested performed to educate the team on engine friction testing. A 3D CAD model was initially produced to design

  14. Department of Energy and Electrical Engineering Spring 2012 Heavy-Duty Diesel Engine Friction Reduction Testing and Analysis

    E-Print Network [OSTI]

    Demirel, Melik C.

    PENNSTATE Department of Energy and Electrical Engineering Spring 2012 Heavy-Duty Diesel Engine Engineering Specifications Concept Generation of Test Cell Test Cell Design Cad Drawings Labview Program. Future groups will be able to use this test rig to run a multitude of engine tests Volvo will be able

  15. E. N. Wiebe, J. E. Howe, J. Summey, and J. J. Norton. (August, 1997). Computing and organizational 1 assessment in the furniture industry. Presented at HCI 97, San Francisco, CA.

    E-Print Network [OSTI]

    implementation of CAD/PDM technology will require an understanding of the design and manufacturing process) and Product Data Management (PDM) software used over LANs has seen strong growth in the 1990's. However restructuring needed to maximally leverage the technology; the introduction of 3-D product models distributed

  16. VERIFICA PRELIMINARE N 59/2009 AVVISO DI CONFERIMENTO DI COLLABORAZIONE PRESSO LA FACOLTA' DI

    E-Print Network [OSTI]

    Di Pillo, Gianni

    Sapienza Università di Roma e la richiesta del CAD di Informatica, si rende noto che la Facoltà di Scienze Laurea in Informatica REQUISITI RICHIESTI: - Laurea specialistica Ingegneria, Informatica e Matematica DURATA E LUOGO: sei mesi (50 ore) - Dipartimento di Informatica PUBBLICAZIONE il presente avviso sarà

  17. Fig. 1. Schematic of gating operation driven by centrifugal force. (a) shows top view of the

    E-Print Network [OSTI]

    Banerjee, Debjyoti

    R1 R2 (a) Pm (b) Fig. 1. Schematic of gating operation driven by centrifugal force. (a) shows top-expanding opening. Liquid pressure at the meniscus is Pm. DESIGN ANALYSES OF CAPILLARY BURST VALVES IN CENTRIFUGAL, Capillary Gating, Centrifugal force, FlumeCAD I. Introduction There is a wide interest in micron

  18. ANALYSIS OF TRITIUM/DEUTERIUM RETENTION AND PERMEATION IN FW/DIVERTOR INCLUDING GEOMETRIC AND TEMPERATURE OPERATING FEATURES

    E-Print Network [OSTI]

    Abdou, Mohamed

    Department, UCLA, Los Angeles, CA 90095, USA ying@fusion.ucla.edu Available data and mathematical materials were implemented in the commercial code COMSOL Multiphysics. The goal is to develop a CAD-based hydrogen /tritium species and chemical compositions. As the data have shown, tritium has a higher

  19. 1074 IEEE TRANSACTIONS ON NANOTECHNOLOGY, VOL. 13, NO. 6, NOVEMBER 2014 A Circuit Synthesis Flow for Controllable-Polarity

    E-Print Network [OSTI]

    De Micheli, Giovanni

    1074 IEEE TRANSACTIONS ON NANOTECHNOLOGY, VOL. 13, NO. 6, NOVEMBER 2014 A Circuit Synthesis Flow--CAD, controllable-polarity field-effect transistors (FETs), double-gate (DG) FETs, logic synthesis, nanotechnology, silicon nanowires. I. INTRODUCTION AS we advance into the era of nanotechnology, semicon- ductor devices

  20. Joint ECE and CS Seminar Time and Location: Friday Mar. 8, 2013 at 11am in CSB 130

    E-Print Network [OSTI]

    : Randomized Motion Planning: From Intelligent CAD to Computer Animation to Protein Folding Speakers: Nancy (virtual prototyping and training), and even computational biology and chemistry (protein folding and drug our work related to virtual prototyping, computer animation, and protein folding. For virtual

  1. By Prof. Lukas W Snyman Department of Electrical Engineering,

    E-Print Network [OSTI]

    Baudoin, Geneviève

    communication systems without the incorporation of materials such as Ge or III-V components. Advanced optical speed waveguide based clock pulsing as well as high speed interconnect data processing. Advanced 3D CAD of Technology (TUT), South Africa Title: Applications of 1 Gbps Silicon Avalanche LEDs for CMOS based optical

  2. AN ANALYSIS OF COMPLEXITY METRICS IN COMPUTER-AIDED DESIGN AT TEXAS A&M 

    E-Print Network [OSTI]

    Valverde, Lauralee Mariel

    2014-01-17

    to understand what students find difficult with regards to modeling, in order to help better teach CAD. Currently, there are a few complexity metrics found in literature such as the part volume ratio, sphere ratio or area ratio. This work will investigate...

  3. 18 IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 9, NO. 1, MARCH 1999 Tools for the Computer-Aided Design

    E-Print Network [OSTI]

    Friedman, Eby G.

    18 IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 9, NO. 1, MARCH 1999 Tools for the Computer-Aided Design of Multigigahertz Superconducting Digital Circuits Kris Gaj, Quentin P. Herr, Victor Adler, Andy the results of a survey of CAD tools target- ing superconducting digital electronics. Five categories of tools

  4. MEMS design rule checking: a batch approach for remote operation

    SciTech Connect (OSTI)

    Yarberry, V.R.

    1998-01-01

    This paper describes a design rule checking (DRC) tool developed as an aid for designing microelectromechanical structures (MEMS) using AutoCAD running on a Windows NT workstation. The application suite, MEMSdrc, consists of: a graphical user interface integrated into AutoCAD to invoke DRC, translation and interface software to communicate with a commercial IC layout design checking software package, and routines to interactively display and review the results. The user interface provides the capability to select a checking window area and specific DRC rules to be applied to the design. The MEMS structures, defined as 2D AutoCAD geometry are translated first into DXF format, then to GDSII format. A remote process transfers the files to a Unix workstation where Mentor Graphics ICverify is invoked to perform the layout design rule checks. Upon completion, the results are translated into DXF geometry and returned back to the Windows NT workstation to be overlaid onto the original design. A set of icons are provided for the user to interactively review the results inside of AutoCAD using a first/next/previous technique.

  5. Integrated Circuit (IC) fabrication technology development over the last few decades has been phenomenal. We have also seen

    E-Print Network [OSTI]

    California at Berkeley, University of

    - neers to capture the full capabilities of the technology. MEMS fab- rication technology has leveraged. As a result, we can all envision MEMS which could be fabricated if they were designed, but which can- nology is the subject of active research in the MEMS CAD commu- nity. To date, MEMS design tools have

  6. 1 Filter_Demo_Project_090910.doc Filter Design & Analysis using Microwave Office

    E-Print Network [OSTI]

    Weller/USF 1 Filter_Demo_Project_090910.doc Filter Design & Analysis using Microwave Office_Demo_MWO. The purpose of the module is to introduce the subject of RF/microwave lumped element filter design, looking simulator features of the CAD tool Microwave Office (or MWO, from Applied Wave Research). In another module

  7. Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830

    E-Print Network [OSTI]

    operating condition (cell voltage, anode utilization, stack pressure, target cell exit temperature), ChemCAD software was used to determine the cathode air rate to provide stack thermal balance, the heat exchanger stack power density based on the pressure, inlet temperature, cell voltage and anode and cathode inlet

  8. On Improving the Clearance for Robots in HighDimensional Configuration Spaces

    E-Print Network [OSTI]

    Utrecht, Universiteit

    to these uncertainties. In a nuclear power plant for example, it may be desirable to minimize the risk of heat in fields such as mobile robots, manipulation plan­ ning, CAD systems, virtual environments, protein folding] for instance, it is used to guide multiple units in a virtual environment. # This research was supported

  9. On Improving the Clearance for Robots in High-Dimensional Configuration Spaces

    E-Print Network [OSTI]

    Utrecht, Universiteit

    of collisions due to these uncertainties. In a nuclear power plant for example, it may be desirable to minimize applied in fields such as mobile robots, manipulation plan- ning, CAD systems, virtual environments purposes as well: in [4] for instance, it is used to guide multiple units in a virtual environment

  10. On Improving the Clearance for Robots in High-Dimensional Configuration Spaces

    E-Print Network [OSTI]

    Geraerts, R.J.

    of collisions due to these uncertainties. In a nuclear power plant for example, it may be desirable to minimize. They are successfully applied in fields such as mobile robots, manipulation planning, CAD systems, virtual environments (FET Open) Project under Contract No IST- 2001-39250 (MOVIE - Motion Planning in Virtual Environments

  11. FY 2015 Computer Hardware and Software Request Form Last Revision 8/12-2013 -JPW

    E-Print Network [OSTI]

    Portman, Douglas

    -28217-2610 Cost Estimate Date Group 5-28217-2290 Cost Estimate RT# 5-28217-2120 Cost Estimate CIDS# Non CSG Budget Cost Estimate Instructions: Step 1: Fill in the end user's name and group (above) and as much Description MathType Visual Studio Microsoft Project PV-Wave MathCAD VISRAD Visio Graphite

  12. SCIENTIFIC PAPERS ACADEMIC JOURNAL OF MANUFACTURING ENGINEERING, VOL. 7, ISSUE 1/200948

    E-Print Network [OSTI]

    Aristomenis, Antoniadis

    SCIENTIFIC PAPERS ACADEMIC JOURNAL OF MANUFACTURING ENGINEERING, VOL. 7, ISSUE 1/200948 CAD BASED and experimental approaches for drilling simulation. The present paper is based on the ground that the increasing and linear feed motions. Invented almost two centuries ago, today's twist drill is a general purpose tool

  13. U.S. Department of Energy Pacific Northwest National Laboratory

    E-Print Network [OSTI]

    .placet@pnl.gov (202) 646-5249 DOE Hydrogen, Fuel Cells, and Infrastructure Technologies Program Systems Analysis, DEER, PBA) · DOE/SC (integrated assessment modeling) · DOE/NA (nuclear hydrogen production study) · DOE Computational mechanics and fluid-dynamics modeling Chem-CAD modeling #12;U.S. Department of Energy Pacific

  14. Proceedings of ESDA2002: 6th Biennial Conference on Engineering Systems Design and Analysis

    E-Print Network [OSTI]

    Aristomenis, Antoniadis

    Istanbul, Turkey, July 8-11, 2002 ESDA2002/DES-006 PROFILING PRODUCT'S INNOVATION IN NEW PRODUCT 3. The product innovation profile score concept. Quick and Easy (Q&E) Assessment Analysis DEVELOPMENT Nicholas Bilalis Associate Professor CAD Laboratory Department of Production Engineering

  15. Last Revised: 10/2013 Battery Waste Collection Request

    E-Print Network [OSTI]

    Sniadecki, Nathan J.

    Only Storage Location Mixed Batteries (alkaline, carbon zinc, Ni-Cad, nickel metal hydride, mercuryLast Revised: 10/2013 Battery Waste Collection Request www.ehs.washington.edu/forms/epo/1943.pdf Instructions: Fill out the approximate weight of each battery type KG For Environmental Health and Safety Use

  16. Learning Outcomes in Electrical Technology Diploma in Electrical Technology (fyrst cycle, level 1)

    E-Print Network [OSTI]

    Karlsson, Brynjar

    and higher level technical staff. Upon completion of the programme, the following criteria shall be fulfilled: Disciplinaryskills Work with design software such as AutoCad. Make technical drawings according to standards lighting and electric installations systems, and select spare parts. Install digital equipment, work

  17. Learning Outcomes in Electrical Technology Diploma in Electrical Technology (fyrst cycle, level 1)

    E-Print Network [OSTI]

    Karlsson, Brynjar

    and higher level technical staff. Upon completion of the programme, the following criteria shall be fulfilled: Disciplinaryskills · Work with design software such as AutoCad. · Make technical drawings according to standards lighting and electric installations systems, and select spare parts. · Install digital equipment, work

  18. Advanced Industrial Archaeology: A new reverse-engineering process for contextualizing and

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Advanced Industrial Archaeology: A new reverse-engineering process for contextualizing.bernard@irccyn.ec-nantes.fr, michel.cotte@univ-nantes.fr Abstract Since virtual engineering has been introduced inside industries. Keywords reverse-engineering, 3D digitalization, CAD, Advanced Industrial Archaeology, technical heritage 1

  19. The Acropolis at Babylon: A Reconstruction during the Late 6th Century B.C. 

    E-Print Network [OSTI]

    Parkoff, Justin 1981-

    2012-12-07

    to determine the most probable appearance of Babylon’s lost monuments. The product of this research reconstructed the massive palatial complexes and their defensive enclosures in the form of a three-dimensional digitized AutoCAD model. This interpretation...

  20. CarFab AutoLab 2.0 Distributed Vehicle Development and Fabrication

    E-Print Network [OSTI]

    -Power, Solar, Fuel-Cell new transportation PARADIGM #12;CAD Design Easily exchanged open source design between · Form shell (fiber weave, epoxy) #12;Propulsion : Modular Design · Human Powered Base · Solar-Director, MIT Vehicle Design Summit #12;#12;MIT Vehicle Design Summit · June 13th-August 13th · 21 Teams, 13

  1. Voice Recognition Data Collection Operating Protocol

    E-Print Network [OSTI]

    .5.1; ACI Inc. Database · NiCad, or NiHyd 9v rechargeable battery Installation · Install and set up format Data are entered in a standardized manner in Word and saved as a text-only-with-line- breaks file

  2. Comput. & Graphics Vol 14, No 2, pp 149-172, 1990 0097-8493/90 $3 00 + .00 Printed in Great Britain 1990 Pergamon Press plc

    E-Print Network [OSTI]

    Rossignac, Jarek

    .O. Box 704, Yorktown Heights, NY 10598 Abstract-Operations that create additive or subtractive volume provide an expedient interface between CAD systems and analysis or manufacturing applications. Despite'sintent. process for manufactured parts by supportingthe geo- metric representations of these parts. It provides

  3. Monolithic Design and Fabrication of a 2-DOF Bio-Inspired Leg Transmission

    E-Print Network [OSTI]

    Wood, Robert

    and manufacturing rules; consequently the addition of assembly scaffolds adds too much complexity to the average manufacturing techniques and monolithic, "pop- up" assembly methods. This is enabled through a new design suite called "popupCAD", a computer-aided design tool which anticipates laminate manufacturing methods

  4. Teaching Three-Dimensional Computer Modeling: Past History and Future Plans

    E-Print Network [OSTI]

    - D product databases in a concurrent design and manufacturing environment, NC State has responded and manufacturing, Also discussed is how the instructional approach to 3-D CAD differs from either drafting or 2-D disks and monochrome monitors. In 1984 this was augmented by the additional purchase of three more

  5. ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton GIT 2011

    E-Print Network [OSTI]

    Colton, Jonathan S.

    ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2011 1 Rapid Prototyping ver. 1 #12;ME 4210: Manufacturing Processes and Engineering Prof. J.S. Colton © GIT 2011 2 Process · Additive fabrication ­ material is added, not removed · Direct fabrication from a CAD file · Layered

  6. Supplementary Material The pumping lid: Investigating multi-material 3D printing for equipment-free, programmable

    E-Print Network [OSTI]

    Ismagilov, Rustem F.

    Supplementary Material The pumping lid: Investigating multi-material 3D printing for equipment. #12;Experimental section 3D printing Lids and cups described in this paper were produced by multi-material 3D printing. The geometry of each part was designed using CAD software and exported to STL

  7. A Design Methodology for Power Electronics \\Lambda Luis E. Amaya, Philip T. Krein, Farid N. Najm

    E-Print Network [OSTI]

    Najm, Farid N.

    A Design Methodology for Power Electronics \\Lambda Luis E. Amaya, Philip T. Krein, Farid N. Najm of power electronic circuits. The design process has not been formalized, and most of the effort recently, in some analog design contexts. In power electronics the available CAD tools tend to address

  8. A Design Methodology for Power Electronics Luis E. Amaya, Philip T. Krein, Farid N. Najm

    E-Print Network [OSTI]

    Najm, Farid N.

    A Design Methodology for Power Electronics Luis E. Amaya, Philip T. Krein, Farid N. Najm of power electronic circuits. The design process has not been formalized,and mostofthe e ort in computer analog design contexts. In power electronics the available CAD tools tend to address circuit analysis

  9. Resources at Princeton U. Relevant to BABAR Drift Chamber

    E-Print Network [OSTI]

    McDonald, Kirk

    (+ VPI), '95--. 4 #12; Present Resources Elementary Particles Lab Mechanical Group: -- Bill Sands at BNL, FNAL, SLAC after construction at Princeton. Mechanical design aided by AutoCAD and ALGOR (FEA­ray group founded by J.A. Wheeler in 1946. The present Elementary Particle Laboratory buildings housed

  10. Resources at Princeton U. Relevant to BABAR Drift Chamber

    E-Print Network [OSTI]

    McDonald, Kirk

    ;Present Resources Elementary Particles Lab Mechanical Group: ­ Bill Sands, engineer ­ Bill Groom, Bob construction at Princeton. Mechanical design aided by AutoCAD and ALGOR (FEA). Two assembly buildings with 7 group founded by J.A. Wheeler in 1946. The present Elementary Particle Laboratory buildings housed fac

  11. 2001 by M. Kosticwww.kostic.niu.edu Ch.3: Measurement System Behavior

    E-Print Network [OSTI]

    Kostic, Milivoje M.

    1 ©2001 by M. Kosticwww.kostic.niu.edu Ch.3: Measurement System Behavior · Ch.3: Measurement System) · Magnitude ratio (2nd O.S.) · Phase shift (2nd O.S.) · 2nd Order System (MathCAD) · The End ©2001 by M. Kosticwww.kostic.niu.edu Ch.3:MeasurementSystem Behavior #12;2 ©2001 by M. Kosticwww

  12. SiGe BiCMOS for Analog, High-Speed Digital and Millimetre-Wave Applications Beyond 50 GHz

    E-Print Network [OSTI]

    Chan Carusone, Tony

    . Automotive radar and imaging applications in the 80-100 GHz range are also briefly discussed. I. INTRODUCTION 77/94GHz automotive, mm-wave imaging, and 100-Gb/s Ethernet applications. This paper addressesT of a scaled device simulated using Silvaco's T-CAD platform. The scaled transistor has 100-nm emitter width

  13. Reusable Modular Software Interfaces for Outdoor Augmented Reality Applications in Engineering

    E-Print Network [OSTI]

    Kamat, Vineet R.

    @umich.edu Abstract An Augmented Reality (AR) application is essentially a platform that integrates the selected device and the AR application platform. The implementation of such an interface for each piece. Integration of AR technology in CAD/CAM systems helps manufacturing companies (e.g. automotive, airlines, etc

  14. Improvement of the computer methods for grounding analysis in layered soils by using

    E-Print Network [OSTI]

    Colominas, Ignasi

    cost. In this paper we present a CAD system based on this BEM numerical formulation for grounding of the substation site. Thus, when a fault condition occurs, the grounding grid transports and dissipates- ysis area, although some problems have been systematically reported: the large computational costs

  15. Xs are for Trajectory Evaluation, Booleans are for Theorem Proving

    E-Print Network [OSTI]

    Melham, Tom

    . Aagaard,1 Thomas F. Melham,2 John W. O'Leary1 1 Strategic CAD Labs 2 FATA Research Group Intel Corporation and model checkers. #12;M. D. Aagaard, T. F. Melham and J. W. O'Leary, `Xs are for Trajec- tory Evaluation. Melham, and J. W. O'Leary, `Xs are for Trajectory Evaluation, Booleans are for Theo- rem Proving

  16. Internat. Math. Nachrichten Nr. 209 (2008), 1528

    E-Print Network [OSTI]

    Pottmann, Helmut

    2008-01-01

    methods. Introduction Complex freeform structures are one of the most striking trends in contemporary" [10]. Since available CAD software does not cover this topic, one may have to resort to simpler shapes mathematics and architectural design/ engineering. ISSN 0020-7926 c 2008 ¨Osterr. Math. Gesellschaft #12

  17. Investigation of residual stresses induced during the selective laser melting process

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    jean-claude.boyer@insa-lyon.fr Keywords: Selective laser melting, layer additional method, Residual stresses. Abstract. The selective laser melting process (SLM), belonging to the family of additive manufacturing processes, can create complex geometry parts from a CAD file. Previously, only prototypes were

  18. Bi-plane correlation imaging for improved detection of lung nodules Ehsan Samei1,2,3

    E-Print Network [OSTI]

    Bi-plane correlation imaging for improved detection of lung nodules Ehsan Samei1,2,3 , David M radiography, digital radiography, stereoscopy, lung nodules, lung cancer, computer aided detection (CAD) 1. INTRODUCTION Lung cancer is a leading cause of death in the US, surpassing the mortality associated with breast

  19. UNIVERSITY OF CALIFORNIA ME 122 Processing of Materials in Manufacturing Spring 2012

    E-Print Network [OSTI]

    Frenklach, Michael

    - Rolling Ch. 6 3/8 Bulk deformation process ­ Extrusion, wire drawing Waterjet drawings (CAD & DXF file Drawing, 3/15 Formability and equipment 10 3/20 Sheet metal forming ­ Design considerations 3/22 Powder) drawings due Feb. 9th 5 2/14 CNC ­ Electrical - Discharge Machining (EDM) Ch. 9 2/16 CNC ­ Laser

  20. Elec Eng 4OI6 Engineering Design

    E-Print Network [OSTI]

    Haykin, Simon

    their work in detail so as to allow another engineering graduate to follow up on the work. In additionElec Eng 4OI6 Engineering Design Course Outline: 2014/2015 Instructors: Dr. Xun Li, lixun introduces the students to basic design methodology, computer aided design (CAD) tools used in the design

  1. Efficient Model Selection for Regularized Linear Discriminant Analysis

    E-Print Network [OSTI]

    Ye, Jieping

    University Tempe, AZ 85287 jieping.ye@asu.edu Tao Xiong University of Minnesota Minneapolis, MN 55455 txiong of Minnesota Minneapolis, MN 55455 janardan@cs.umn.edu Jinbo Bi CAD group, Siemens Medical Solutions, Inc. Malvern, PA 19355 jinbo.bi@siemens.com Vladimir Cherkassky University of Minnesota Minneapolis, MN 55455

  2. ECE 271 Digital Logic Design Catalog Description: A first course in digital logic design. Data types and representations,

    E-Print Network [OSTI]

    and definitions used in digital logic design: notation, number systems, difference between analog and digital system, specification and implementation, analysis and design, design cycle, CAD tools, combinational-level description of a digital system into a binary description of it (ABET Outcomes: A,M) 2. Analyze and design

  3. ECE 102: Digital Circuit Logic High-school Math/Science

    E-Print Network [OSTI]

    Connors, Daniel A.

    Concepts: - Introduction to Digital Systems - Number, character, and information representation - Boolean Applications: - Adder/subtracter - Array Multiplier - Traffic light controller - ALU design Tools: CAD toolsECE 102: Digital Circuit Logic High-school Math/Science - None - Can implement logic

  4. Digital Microfluidic Biochips: A Vision for Functional Diversity and More than Moore

    E-Print Network [OSTI]

    Chakrabarty, Krishnendu

    of droplet-based "digital" microfluidic biochips. It describes emerging computer-aided design (CAD) tools if appropriate design methods/tools and in-system automation methods are available. The rest of this paperDigital Microfluidic Biochips: A Vision for Functional Diversity and More than Moore Krishnendu

  5. MTL ANNUAL RESEARCH REPORT 2014 Acknowledgements iii MICROSYSTEMS INDUSTRIAL GROUP

    E-Print Network [OSTI]

    Reif, Rafael

    , Computation William Maloney, Systems Manager Paul McGrath, Research Specialist Michael McIlrath, CAD Manager Technician Paul Tierney, Research Specialist Timothy Turner, Technician A Dennis Ward, Research Specialist/POSTDOC ADVISORY BOARD Anna Baldycheva Alexander Barbati Hyun Boo Winston Chern Jeffrey Chou Charles Mackin Ujwal

  6. Architecture-level Thermal Behavioral Characterization For Multi-Core Microprocessors

    E-Print Network [OSTI]

    Tan, Sheldon X.-D.

    -core microprocessor. The estimated temperature at the architecture level can then be used to perform power accurate and fast thermal estimation at the architecture level. Both architec- ture and CAD tool community approach for fast temperature estimation at the multi- core thermal architecture level at early design

  7. A statistical optimization methodology for practical integrated circuit design for quality and manufacturability 

    E-Print Network [OSTI]

    Pastor, Curtis Lemay

    1997-01-01

    and Manufacturability (DFQM) CAD tools, and other software tools used to implement this research are as follows: 1.GOSSIP[3]: A Generic System for Statistical Improvement of Performance, developed at the Electrical Engineering Department, Texas A&M University. 2.simvis...

  8. Application of Symbolic Analysis to Power and Ground Interconnect Optimization

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    submicron levels · Vdd levels going down to conserve power · Power and Ground buses cannot be assumed to be perfect conductors · P&G buses must be designed carefully to ensure that supply voltage levels are maintained at appropriate levels. · Better CAD techniques needed for estimation of voltage drops in P&G buses

  9. This paper presents the development of a simulation program (SUGAR) for planar MEMS devices. The approach

    E-Print Network [OSTI]

    California at Berkeley, University of

    ABSTRACT This paper presents the development of a simulation program (SUGAR) for planar MEMS, and high-level sim- ulation package for MEMS. Keywords: MEMS, SUGAR, nodal analysis, nonlinear model, Matlab INTRODUCTION Rapid development of MEMS technology requires CAD tools for support. Most

  10. Structured Custom Design of MEMS Devices Dr. Debjyoti Banerjee

    E-Print Network [OSTI]

    Banerjee, Debjyoti

    Structured Custom Design of MEMS Devices Dr. Debjyoti Banerjee Senior Consulting Engineer COVENTOR, Macro-model, Netlist, MEMS, CAD. ABSTRACT A top down design is essential to minimize time-to-market of MEMS devices. A structured custom design approach for MEMS design based on the concept of using

  11. MEMS @MEMS @ Texas TechTexas Tech

    E-Print Network [OSTI]

    Gelfond, Michael

    MEMS @MEMS @ Texas TechTexas Tech #12;MEMS Research @ TTUMEMS Research @ TTU MEMS Design and Fabrication MEMS Testing, Characterization & Control MEMS Integration and Application MEMS Education MEMS Organization #12;MEMS Design, SimulationMEMS Design, Simulation and Fabricationand Fabrication AutoCAD (TTU

  12. WCCCE Conference -Vancouver, 1998 Hardware/Software Codesign

    E-Print Network [OSTI]

    Gardner, William

    1 of 8 WCCCE Conference - Vancouver, 1998 Hardware/Software Codesign - introducing entitled "VLSI Design, CAD and Hardware/Software Codesign" under the rubric of "Special Topics", where.0 What is Hardware/Software Codesign? In this presentation, it is important that we first start

  13. Proc. Nati. Acad. Sci. USA Vol. 78, No. 3, pp. 1901-1905, March 1981

    E-Print Network [OSTI]

    -linked sandwich immunoassay for insulin using laser fluorimetric detection (insulin detection in serum samples of the fluorogenic substrate, p-hydroxy- phenylacetic acid. The product is detected by excitation of fluo- rescence with the 325-nm line of a continuous-wave helium/cad- mium ion laser on line with reverse-phase high

  14. INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING Int. J. Adapt. Control Signal Process. 2008; 22:968986

    E-Print Network [OSTI]

    Efe, Mehmet Önder

    INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING Int. J. Adapt. Control Signal.ku Kasnako~glu Department of Electrical and Electronics Engineering, TOBB Economics and Technology University, S¨og¨ut¨oz¨u Cad. No. 43, TR-06560 S¨og¨ut¨oz¨u, Ankara, Turkey SUMMARY This paper presents a novel

  15. Post-project appraisals of constructed vernal pools in Solano County, California

    E-Print Network [OSTI]

    Baraona, Maya; Ippolito, Teresa; Renz, Wendy

    2007-01-01

    Mitigation Bank POOL- 51 Ponding Area (CAD)= 0.06 acresArea (Acres) (ft) (inches) 72.5 paces = 372 Created Pool 43 Created Pool 51Area (Acres) (inches) NA NA Created Pool 43 NA NA NA NA Created Pool 51

  16. ECE 450/1: Digital System Design Knowledge of Design Methodology

    E-Print Network [OSTI]

    Connors, Daniel A.

    , control) - Design trade-offs (area, speed, power) - Design methodology and design flow for complex logicECE 450/1: Digital System Design Knowledge of Design Methodology and Design Flow - ECE102 Pre-requisites: - Understands complex logic minimization through QM and CAD methods Switching Theory Finite-State Machines Gates

  17. Virtual Prototyping Examples for Automotive Industries Fan Dai, Wolfgang Felger, Thomas Fruhauf,

    E-Print Network [OSTI]

    Zachmann, Gabriel

    Virtual Prototyping Examples for Automotive Industries Fan Dai, Wolfgang Felger, Thomas Fr­ ical prototypes. In the automotive industries, CAD and CAE systems are widely used. This provides a good basis for virtual prototyping. This vision is therefore extremely interesting for automotive in

  18. Computer-Aided Optimization of dc/dc Converters for Automotive Applications Timothy C. Neugebauer David J. Perreault

    E-Print Network [OSTI]

    Perreault, Dave

    Computer-Aided Optimization of dc/dc Converters for Automotive Applications Timothy C. Neugebauer/dc converters, with a focus on converters for dual-voltage automotive electrical systems. A new CAD optimization is the next evolutionary step for automotive electrical systems. High-power loads will be moved to a new high

  19. An EIE/Altener project Co-funded by the EU Commission

    E-Print Network [OSTI]

    · a low electricity price (7.2c/kw sales price (economic assessment) and 3.36c/kw 20year pro- jectedPROBIOGAS An EIE/Altener project Co-funded by the EU Commission National Assessment Report CAD situation. However, because the situation is not a live project, but only a potential one

  20. Building a Repository for Workflow Systems Chengfei Liu

    E-Print Network [OSTI]

    Liu, Chengfei

    . The repository technology is introduced in CASE/CAD environments to provide unified access and management of Technology, Sydney NSW 2009, Australia liu@socs.uts.edu.au Xuemin Lin School of Computer Science maria@csee.uq.edu.au Abstract Workflow technology is becoming the key technology for business process

  1. IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 22, NO. 5, MAY 2003 627 [3] , MicroC/OS-II. Lawrence, KS: R & D Books, 1998.

    E-Print Network [OSTI]

    Mazumder, Pinaki

    and G. De Micheli, Dynamic Power Management: Design Techniques and CAD Tools. Norwell, MA: Kluwer, 1997. [9] A. R. Chandrakasan and R. W. Brodersen, Low Power Digital CMOS Design. Norwell, MA: Kluwer, 1995. [10] G. Yeap, Practical Low Power Digital VLSI Design. Norwell, MA: Kluwer, 1998. [11] J. Monteiro

  2. Graduate Studies in the Mechanical, Industrial and

    E-Print Network [OSTI]

    Nikolaidis, Efstratios

    &D, Conceptual Design Management CAD, drafting Operations, labor #12;2. Why MIME · One of the best departments, NREL, NSF ­ Industry: Bell Helicopter Textron, Chrysler, Cooper Tire and Rubber, Eaton, Ford, GM and MEMS Material Joining Laboratory Precision Micromachining Wind Turbine Research High Performance

  3. THE EFFECT OF POLICE BODY-WORN CAMERAS ON USE OF FORCE AND CITIZENS’ COMPLAINTS AGAINST THE POLICE: A RANDOMIZED CONTROLLED TRIAL

    E-Print Network [OSTI]

    Ariel, Barak; Farrar, William; Sutherland, Alex

    2014-11-19

    (Wilson et al 2010). However, how body-worn- cameras may be used to affect behavior and – specifically – that of police officers, is as yet unknown. HYPOTHESES As the literature review suggests, the most ubiquitous type of camera – mobile cameras... -casual interaction with the public was recorded on the Department’s computer-aided dispatch system (CAD...

  4. RHIC Operation and Plans for Upgrades Wolfram Fischer

    E-Print Network [OSTI]

    Ã? design 10Ã? achieved #12;Wolfram Fischer 7 Achieved parameters Mode No of bunches Ions/bunch [ 1 0 9] enhanced luminosity 60e9 Au intensity design luminosity Beamexperiments #12;Wolfram Fischer 10 RHIC Run-41 RHIC Operation and Plans for Upgrades Wolfram Fischer C-AD Machine Advisory Committee Meeting 10

  5. Textile and Apparel Technology and Management Scholarly and Creative Works

    E-Print Network [OSTI]

    Liu, Paul

    Science, pp. 47, 5114-5120. Suh, M. & Lee, H. (2012). Strategic Use of CAD/CAM technology for apparel Polymer Science, 123, 4, p. 2095-2106. DOI: 10.1002/app.34712 Yilmaz, N. D., Powell, N. B., Michielsen, S1 Textile and Apparel Technology and Management Scholarly and Creative Works May 1, 2011 ­ April 30

  6. Edge Subdivision Schemes and the Construction of Smooth Vector Fields Ke Wang Weiwei Yiying Tong Mathieu Desbrun Peter Schrder

    E-Print Network [OSTI]

    Frey, Pascal

    . Design of tan- gent vector fields is made particularly easy with this machinery as we demonstrate. CR-Aided Engineering-- Computer-aided design (CAD) Keywords: Subdivision, Discrete Exterior Calculus, Discrete], and shading [Schlick 1994]. In particular the design of vector fields is greatly facili- tated

  7. Vladimir Litvinenko, January 23,2006, RHIC Machine Advisory Committee EBIS Booster

    E-Print Network [OSTI]

    Vladimir Litvinenko, January 23,2006, RHIC Machine Advisory Committee Linac EBIS Booster AGS RHIC, Brookhaven National Laboratory, Upton, NY, USA #12;Vladimir Litvinenko, January 23,2006, RHIC Machine Electron cooling for RHIC II - Wrap-up Vladimir N. Litvinenko for C-AD team Collider Accelerator Department

  8. CFD Investigations of a Transonic Swept-Wing Laminar Flow Control Flight Experiment 

    E-Print Network [OSTI]

    Neale, Tyler P.

    2011-08-08

    wing glove was identified. Next, a full CFD analysis of the aircraft was performed to determine any adverse effects on the wing flow-field from the aircraft engines. This required an accurate CAD model of the selected aircraft. Proper modeling...

  9. Page 1 | Bachelor of Science in Mechanical Engineering | Academic Plan of Study Updated September 2014 Bachelor of Science in Mechanical Engineering

    E-Print Network [OSTI]

    Wang, Yongge

    resources. Additional important areas for the mechanical engineer include the design and analysis. Increasingly, this design and analysis is computer based using the techniques of computer-aided design (CAD thermodynamics, fluid mechanics, engineering mechanics, engineering materials, nuclear and chemical sciences

  10. Learning Outcomes for BSc in Biomedical Engineering

    E-Print Network [OSTI]

    Karlsson, Brynjar

    mechanics, stress theory, safety of structures, and basic use of computational tools in design, including 3D, the following criteria shall be fulfilled: 1. KNOWLEDGE Upon completion of the BSc programme the student should CAD. 1.12. Analysis and design of electric circuits, electronics and digital electronics. 1

  11. Development of Molten-Salt Heat Transfer Fluid Technology for Parabolic Trough Solar Power Plants - Public Final Technical Report

    SciTech Connect (OSTI)

    Grogan, Dylan C. P.

    2013-08-15

    Executive Summary This Final Report for the "Development of Molten-Salt Heat Transfer Fluid (HTF) Technology for Parabolic Trough Solar Power Plants” describes the overall project accomplishments, results and conclusions. Phase 1 analyzed the feasibility, cost and performance of a parabolic trough solar power plant with a molten salt heat transfer fluid (HTF); researched and/or developed feasible component options, detailed cost estimates and workable operating procedures; and developed hourly performance models. As a result, a molten salt plant with 6 hours of storage was shown to reduce Thermal Energy Storage (TES) cost by 43.2%, solar field cost by 14.8%, and levelized cost of energy (LCOE) by 9.8% - 14.5% relative to a similar state-of-the-art baseline plant. The LCOE savings range met the project’s Go/No Go criteria of 10% LCOE reduction. Another primary focus of Phase 1 and 2 was risk mitigation. The large risk areas associated with a molten salt parabolic trough plant were addressed in both Phases, such as; HTF freeze prevention and recovery, collector components and piping connections, and complex component interactions. Phase 2 analyzed in more detail the technical and economic feasibility of a 140 MWe,gross molten-salt CSP plant with 6 hours of TES. Phase 2 accomplishments included developing technical solutions to the above mentioned risk areas, such as freeze protection/recovery, corrosion effects of applicable molten salts, collector design improvements for molten salt, and developing plant operating strategies for maximized plant performance and freeze risk mitigation. Phase 2 accomplishments also included developing and thoroughly analyzing a molten salt, Parabolic Trough power plant performance model, in order to achieve the project cost and performance targets. The plant performance model and an extensive basic Engineering, Procurement, and Construction (EPC) quote were used to calculate a real levelized cost of energy (LCOE) of 11.50¢/kWhe , which achieved the Phase 2 Go/No Go target of less than 0.12¢/kWhe. Abengoa Solar has high confidence that the primary risk areas have been addressed in the project and a commercial plant utilizing molten salt is economically and technically feasible. The strong results from the Phase 1 and 2 research, testing, and analyses, summarized in this report, led Abengoa Solar to recommend that the project proceed to Phase 3. However, a commercially viable collector interconnection was not fully validated by the end of Phase 2, combined with the uncertainty in the federal budget, forced the DOE and Abengoa Solar to close the project. Thus the resources required to construct and operate a molten salt pilot plant will be solely supplied by Abengoa Solar.

  12. A robust and efficient approach to detect 3D rectal tubes from CT colonography

    SciTech Connect (OSTI)

    Yang Xiaoyun; Slabaugh, Greg [Medicsight PLC, Kensington Centre, 66 Hammersmith Road, London (United Kingdom)

    2011-11-15

    Purpose: The rectal tube (RT) is a common source of false positives (FPs) in computer-aided detection (CAD) systems for CT colonography. A robust and efficient detection of RT can improve CAD performance by eliminating such ''obvious'' FPs and increase radiologists' confidence in CAD. Methods: In this paper, we present a novel and robust bottom-up approach to detect the RT. Probabilistic models, trained using kernel density estimation on simple low-level features, are employed to rank and select the most likely RT tube candidate on each axial slice. Then, a shape model, robustly estimated using random sample consensus (RANSAC), infers the global RT path from the selected local detections. Subimages around the RT path are projected into a subspace formed from training subimages of the RT. A quadratic discriminant analysis (QDA) provides a classification of a subimage as RT or non-RT based on the projection. Finally, a bottom-top clustering method is proposed to merge the classification predictions together to locate the tip position of the RT. Results: Our method is validated using a diverse database, including data from five hospitals. On a testing data with 21 patients (42 volumes), 99.5% of annotated RT paths have been successfully detected. Evaluated with CAD, 98.4% of FPs caused by the RT have been detected and removed without any loss of sensitivity. Conclusions: The proposed method demonstrates a high detection rate of the RT path, and when tested in a CAD system, reduces FPs caused by the RT without the loss of sensitivity.

  13. The Study of Media Beta Elliptical Cavities for CIADS

    E-Print Network [OSTI]

    Liangjian, Wen; Yongming, Li; Ruoxu, Wang; Hao, Guo; Cong, Zhang; Huan, Jia; Tiancai, Jiang; Chunlong, Li; Yuan, He

    2015-01-01

    The China Accelerator Driven Sub-critical System (CADS) is a high intensity proton facility to dispose of nuclear waste and generate electric power. CADS is based on 1.5GeV, 10mA CW superconducting (SC) linac as a driver. The high-energy section of the linac is compose of two families of SC elliptical cavities which are designed for the geometrical beta 0.63 and 0.82. In this paper, the 650 MHz \\b{eta}=0.63 SC elliptical cavity was studied including cavity optimization, multipacting, high order modes (HOMs) and generator RF power calculation. Keywords: high current, medium beta, ADS, superconducting cavity, HOMs

  14. An automated system for lung nodule detection in low-dose computed tomography

    E-Print Network [OSTI]

    Gori, I; Martinez, A Preite; Retico, A

    2007-01-01

    A computer-aided detection (CAD) system for the identification of pulmonary nodules in low-dose multi-detector helical Computed Tomography (CT) images was developed in the framework of the MAGIC-5 Italian project. One of the main goals of this project is to build a distributed database of lung CT scans in order to enable automated image analysis through a data and cpu GRID infrastructure. The basic modules of our lung-CAD system, a dot-enhancement filter for nodule candidate selection and a neural classifier for false-positive finding reduction, are described. The system was designed and tested for both internal and sub-pleural nodules. The results obtained on the collected database of low-dose thin-slice CT scans are shown in terms of free response receiver operating characteristic (FROC) curves and discussed.

  15. Accurate characterization and improvement of GaAs microstrip attenuation 

    E-Print Network [OSTI]

    Carroll, James Mason

    1992-01-01

    Convergence. III. E. 6 Final Model. III. F Simulation Results for 100 um GaAs. . III. F. 1 On-GaAs Microstrip. III. I', 2 Suspended Microstrip Line . . . . 50 . . . . 51 . . . . 54 . . . . 56 . . . . 56 . . . 56 . . . . 64 64 . . . , 64 III. F. 3... Comparison Between On-GaAs and Suspcndcd Microstrip . . . 68 III. F. 4 Microstrip Inductance III. G EM Parameters in CAD Simulations . . III. H Simulation Results for 150 um GaAs. III. I Conclusions and Recommendations. IV RESEARCH ACCOMPLISHMENTS...

  16. Design, Packaging, and Architectural Policy Co-optimization for DC Power Integrity in 3D DRAM

    E-Print Network [OSTI]

    Lim, Sung Kyu

    -domain CAD/architectural platform that addresses DC power noise issues in 3D DRAM targeting stacked DDR3) Interposer Figure 1: Default configurations of four 3D DRAM designs. (a) on-chip stacked DDR3, (b) off-chip stacked DDR3, (c) Wide I/O, and (d) HMC. are used in a stacked DDR3 design [2] to reduce power noise. Sub

  17. Hybrid CMOS-MQCA Logic Architectures using Multi-Layer Spintronic Devices

    E-Print Network [OSTI]

    Das, Jayita; Rajaram, Srinath; Bhanja, Sanjukta

    2011-01-01

    We present a novel hybrid CMOS-MQCA architecture using multi-layer Spintronic devices as computing elements. A feasibility study is presented with 22nm CMOS where new approaches for spin transfer torque induced clocking and read-out scheme for variability-tolerance are introduced. A first-of-its-kind Spintronic device model enables circuit simulation using existing CAD infrastructure. Approximately 70% reduction in energy consumption is observed when compared against conventional field-induced clocking scheme.

  18. MEE 452: Example 3-2 ShellShell--andand--Tube Heat Exchanger Analysis:Tube Heat Exchanger Analysis

    E-Print Network [OSTI]

    Kostic, Milivoje M.

    MEE 452: Example 3-2 ShellShell--andand--Tube Heat Exchanger Analysis:Tube Heat Exchanger Analysis-butyl alcohol @150oF. Two-tube-pass for illustration only COUNTER FLOW T PARALLEL FLOW T Heat Exchanger/c,out or 16/Re otherwise Tube-side Pressure drop ... MathCAD S&T HX analysis 7 of 7 Tube-side Pressure drop

  19. Using Photogrammetry to Estimate Tank Waste Volumes from Video

    SciTech Connect (OSTI)

    Field, Jim G. [Washington River Protection Solutions, LLC, Richland, WA (United States)

    2013-03-27

    Washington River Protection Solutions (WRPS) contracted with HiLine Engineering & Fabrication, Inc. to assess the accuracy of photogrammetry tools as compared to video Camera/CAD Modeling System (CCMS) estimates. This test report documents the results of using photogrammetry to estimate the volume of waste in tank 241-C-I04 from post-retrieval videos and results using photogrammetry to estimate the volume of waste piles in the CCMS test video.

  20. Studies on the impact of amine-containing compounds on lysosomes

    E-Print Network [OSTI]

    Funk, Ryan Sol

    2011-12-31

    .6.1. Amine-containing drugs affect lysosomal structure and function……….…18 1.6.2. Lysosomal alkalinization………………………………………...……………..19 1.6.3. Cytoplasmic vacuolization…...………………………………….......…….…..31 1.6.4. Lysosomal lipid accumulation... of the change in apparent lysosomal volume………………...126 3.3.7. Dose dependent effect of CADs on LTR accumulation suggests lysosomal alkalinization with increased dose……………………………………...129 3.4. Conclusions……………………………………………………………………………... 132 3.5. References...

  1. Effects of implantation of Synovex (progesterone-estradiol) and castration in Holstein and Brown Swiss bull calves for beef production 

    E-Print Network [OSTI]

    Vergara, Francisco de Patino

    1967-01-01

    "ra@-HE'LL 5~?. Cn?. X. . ~n?? @no Tech? yy 2~- 69? QS, TelK~ H+ K?~mezg, B, snQ G~, Q H LNA, ENeee yR ~ el eaaeeaeLm cad oC eeseosCevms p:ey~ oa migs getLe ~ CQKCSSS QQQSUECIIKXCI QS SCCQX8o ASSCo Do ETC ~ AQSZ4 Eeslhi, 4sGP~ Ki ~ +Lese's, J, lLM7+ Xke...

  2. Lung nodule detection in low-dose and high-resolution CT scans

    E-Print Network [OSTI]

    Delogu, P; Gori, I; Preite Martínez, A; Retico, A; Tata, A

    2006-01-01

    We are developing a computer-aided detection (CAD) system for the identification of small pulmonary nodules in screening CT scans. The main modules of our system, i.e. a dot-enhancement filter for nodule candidate selection and a neural classifier for false positive finding reduction, are described. The preliminary results obtained on the so-far collected database of lung CT are discussed.

  3. Semantic Enrichment for Building Information Modeling

    E-Print Network [OSTI]

    Belsky, Michael; Sacks, Rafael; Brilakis, Ioannis

    2015-01-01

    developed that can infer such relationships from the geometry and spatial topology. Tools such as Siemens Synchronous Technology (Siemens), for example, can use data from multiple CAD systems. Given a model in B- rep the tools can process it into a feature... models are usually generated in heterogeneous computing platforms and as a result the semantics are hidden in information structures of different product data formats. This imposes difficulties for seamless interoperability and efficient reuse...

  4. Work Authorization Document NSTX Upgrade Project

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    , bellows and organ pipes; the fabrication of Center Stack support legs; the procurementJAN14 06JAN14 0 51 904,627.54 139,894.87 167,190.11 1307-1010 Complete CAD Detail & Assy Drawings & Assy Drawings (Final) 48* 01FEB11* 31MAR11A 07APR11 07JUN11 -42 126 29,478.76 50 14,739.38 29

  5. Green Technology Foresight about environmentally friendly products

    E-Print Network [OSTI]

    OF PRODUCTS AND PROCESSES 81 3.5.1 CAD and environmental databases 81 3.5.2 Topology optimization 82 3.5.3 Computer Aided Process Engineering 83 3.6 PROCESS REGULATION AND CONTROL 84 3.6.1 Process automation 86 3 OF THE ENVIRONMENTAL ASPECTS WITHIN THE THREE TECHNOLOGY AREAS AS SOCIAL AND SCIENTIFIC PROCESS 44 2.7.1 Elements

  6. A novel computer-aided lung nodule detection system for CT images

    SciTech Connect (OSTI)

    Tan, Maxine; Deklerck, Rudi; Jansen, Bart; Bister, Michel; Cornelis, Jan [Department of Electronics and Informatics (ETRO), Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel (Belgium); Department of Electronics and Informatics (ETRO), Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium and Interdisciplinary Institute for Broadband Technology (IBBT), Gaston Crommenlaan 8, 9050 Gent (Belgium); Department of Electronics and Informatics (ETRO), Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel (Belgium)

    2011-10-15

    Purpose: The paper presents a complete computer-aided detection (CAD) system for the detection of lung nodules in computed tomography images. A new mixed feature selection and classification methodology is applied for the first time on a difficult medical image analysis problem. Methods: The CAD system was trained and tested on images from the publicly available Lung Image Database Consortium (LIDC) on the National Cancer Institute website. The detection stage of the system consists of a nodule segmentation method based on nodule and vessel enhancement filters and a computed divergence feature to locate the centers of the nodule clusters. In the subsequent classification stage, invariant features, defined on a gauge coordinates system, are used to differentiate between real nodules and some forms of blood vessels that are easily generating false positive detections. The performance of the novel feature-selective classifier based on genetic algorithms and artificial neural networks (ANNs) is compared with that of two other established classifiers, namely, support vector machines (SVMs) and fixed-topology neural networks. A set of 235 randomly selected cases from the LIDC database was used to train the CAD system. The system has been tested on 125 independent cases from the LIDC database. Results: The overall performance of the fixed-topology ANN classifier slightly exceeds that of the other classifiers, provided the number of internal ANN nodes is chosen well. Making educated guesses about the number of internal ANN nodes is not needed in the new feature-selective classifier, and therefore this classifier remains interesting due to its flexibility and adaptability to the complexity of the classification problem to be solved. Our fixed-topology ANN classifier with 11 hidden nodes reaches a detection sensitivity of 87.5% with an average of four false positives per scan, for nodules with diameter greater than or equal to 3 mm. Analysis of the false positive items reveals that a considerable proportion (18%) of them are smaller nodules, less than 3 mm in diameter. Conclusions: A complete CAD system incorporating novel features is presented, and its performance with three separate classifiers is compared and analyzed. The overall performance of our CAD system equipped with any of the three classifiers is well with respect to other methods described in literature.

  7. A Total Cost of Ownership Model for Low Temperature PEM Fuel Cells in Combined Heat and Power and Backup Power Applications

    SciTech Connect (OSTI)

    University of California, Berkeley; Wei, Max; Lipman, Timothy; Mayyas, Ahmad; Chien, Joshua; Chan, Shuk Han; Gosselin, David; Breunig, Hanna; Stadler, Michael; McKone, Thomas; Beattie, Paul; Chong, Patricia; Colella, Whitney; James, Brian

    2014-06-23

    A total cost of ownership model is described for low temperature proton exchange membrane stationary fuel cell systems for combined heat and power (CHP) applications from 1-250kW and backup power applications from 1-50kW. System designs and functional specifications for these two applications were developed across the range of system power levels. Bottom-up cost estimates were made for balance of plant costs, and detailed direct cost estimates for key fuel cell stack components were derived using design-for-manufacturing-and-assembly techniques. The development of high throughput, automated processes achieving high yield are projected to reduce the cost for fuel cell stacks to the $300/kW level at an annual production volume of 100 MW. Several promising combinations of building types and geographical location in the U.S. were identified for installation of fuel cell CHP systems based on the LBNL modelling tool DER CAM. Life-cycle modelling and externality assessment were done for hotels and hospitals. Reduced electricity demand charges, heating credits and carbon credits can reduce the effective cost of electricity ($/kWhe) by 26-44percent in locations such as Minneapolis, where high carbon intensity electricity from the grid is displaces by a fuel cell system operating on reformate fuel. This project extends the scope of existing cost studies to include externalities and ancillary financial benefits and thus provides a more comprehensive picture of fuel cell system benefits, consistent with a policy and incentive environment that increasingly values these ancillary benefits. The project provides a critical, new modelling capacity and should aid a broad range of policy makers in assessing the integrated costs and benefits of fuel cell systems versus other distributed generation technologies.

  8. Cardiovascular Comorbidity and Mortality in Men With Prostate Cancer Treated With Brachytherapy-Based Radiation With or Without Hormonal Therapy

    SciTech Connect (OSTI)

    Nanda, Akash; Chen, Ming-Hui; Moran, Brian J.; Braccioforte, Michelle H.; D'Amico, Anthony V.

    2013-04-01

    Purpose: To assess the impact of coronary artery disease (CAD) risk factors and sequelae on the risk of all-cause mortality (ACM) in men treated for prostate cancer (PC). Methods and Materials: The study cohort comprised 5077 men with PC consecutively treated with curative intent between 1997 and 2006 at the Chicago Prostate Cancer Center. Cox and Fine and Gray's competing risks regression multivariable analyses were performed, assessing whether cardiovascular comorbidity impacted the risk of ACM and PC-specific mortality, respectively, adjusting for CAD risk factors (diabetes mellitus, hypercholesterolemia, or hypertension) and sequelae (congestive heart failure or myocardial infarction), age, year and type of treatment, and known PC prognostic factors. Results: When compared with men with no comorbidity there was a significantly increased risk of ACM in men with congestive heart failure or myocardial infarction (adjusted hazard ratio [AHR] 1.96, P<.001) and in men with diabetes mellitus (AHR 1.60, P=.03) and hypertension (AHR 1.25, P=.04). In contrast, men with hypercholesterolemia had a similar risk of ACM (AHR 0.68, P=.17) when compared with men with no comorbidity. Other factors associated with a significantly increased risk of ACM included age (AHR 1.09, P<.001), prostate-specific antigen level (AHR 1.25, P=.008), and Gleason score 8-10 disease (AHR 1.71, P=.003). Cardiovascular comorbidity did not impact the risk of PC-specific mortality. Conclusions: In addition to age and unfavorable PC prognostic factors, select CAD risk factors and sequelae are associated with an increased risk of ACM in men treated for PC. These comorbidity prognostic factors predict time courses of mortality from competing causes, which may be factored into the decision-making process when considering management options for PC in a given individual.

  9. On use of CO{sub 2} chemiluminescence for combustion metrics in natural gas fired reciprocating engines.

    SciTech Connect (OSTI)

    Gupta, S. B.; Bihari, B.; Biruduganti, M.; Sekar, R.; Zigan, J.

    2011-01-01

    Flame chemiluminescence is widely acknowledged to be an indicator of heat release rate in premixed turbulent flames that are representative of gas turbine combustion. Though heat release rate is an important metric for evaluating combustion strategies in reciprocating engine systems, its correlation with flame chemiluminescence is not well studied. To address this gap an experimental study was carried out in a single-cylinder natural gas fired reciprocating engine that could simulate turbocharged conditions with exhaust gas recirculation. Crank angle resolved spectra (266-795 nm) of flame luminosity were measured for various operational conditions by varying the ignition timing for MBT conditions and by holding the speed at 1800 rpm and Brake Mean effective Pressure (BMEP) at 12 bar. The effect of dilution on CO*{sub 2}chemiluminescence intensities was studied, by varying the global equivalence ratio (0.6-1.0) and by varying the exhaust gas recirculation rate. It was attempted to relate the measured chemiluminescence intensities to thermodynamic metrics of importance to engine research -- in-cylinder bulk gas temperature and heat release rate (HRR) calculated from measured cylinder pressure signals. The peak of the measured CO*{sub 2} chemiluminescence intensities coincided with peak pressures within {+-}2 CAD for all test conditions. For each combustion cycle, the peaks of heat release rate, spectral intensity and temperature occurred in that sequence, well separated temporally. The peak heat release rates preceded the peak chemiluminescent emissions by 3.8-9.5 CAD, whereas the peak temperatures trailed by 5.8-15.6 CAD. Such a temporal separation precludes correlations on a crank-angle resolved basis. However, the peak cycle heat release rates and to a lesser extent the peak cycle temperatures correlated well with the chemiluminescent emission from CO*{sub 2}. Such observations point towards the potential use of flame chemiluminescence to monitor peak bulk gas temperatures as well as peak heat release rates in natural gas fired reciprocating engines.

  10. Kinematic and Dynamic Analyses of the Orthoglide 5-axis

    E-Print Network [OSTI]

    Ur-Rehman, Raza; Chablat, Damien; Wenger, Philippe

    2008-01-01

    This paper deals with the kinematic and dynamic analyses of the Orthoglide 5-axis, a five-degree-of-freedom manipulator. It is derived from two manipulators: i) the Orthoglide 3-axis; a three dof translational manipulator and ii) the Agile eye; a parallel spherical wrist. First, the kinematic and dynamic models of the Orthoglide 5-axis are developed. The geometric and inertial parameters of the manipulator are determined by means of a CAD software. Then, the required motors performances are evaluated for some test trajectories. Finally, the motors are selected in the catalogue from the previous results.

  11. Optical properties of GaAs 2D hexagonal and cubic photonic crystal

    SciTech Connect (OSTI)

    Arab, F. Assali, A.; Grain, R.; Kanouni, F.

    2015-03-30

    In this paper we present our theoretical study of 2D hexagonal and cubic rods GaAs in air, with plan wave expansion (PWE) and finite difference time domain (FDTD) by using BandSOLVE and FullWAVE of Rsoft photonic CAD package. In order to investigate the effect of symmetry and radius, we performed calculations of the band structures for both TM and TE polarization, contour and electromagnetic propagation and transmission spectra. Our calculations show that the hexagonal structure gives a largest band gaps compare to cubic one for a same filling factor.

  12. Engineering Accomplishments in the Construction of NCSX

    SciTech Connect (OSTI)

    G. H. Neilson; P.J. Heitzenroeder; B.E. Nelson; W.T. Reiersen; A. Brooks; T.G. Brown; J.H. Chrzanowski; M.J. Cole; F. Dahlgren; T. Dodson; L.E. Dudek; R.A. Ellis; H.M. Fan; P.J. Fogarty; K.D. Freudenberg; P.L. Goranson; J.H. Harris; M.R. Kalish; G. Labik; J.F. Lyon; N. Pomphrey; C.D. Priniski; S. Raftopoulos; D.J. Rej; W.R. Sands; R.T. Simmons; B.E. Stratton; R.L. Strykowsky; M.E. Viola; D.E. Williamson; M.C. Zarnstorff

    2008-09-01

    The National Compact Stellarator Experiment (NCSX) was designed to test a compact, quasiaxisymmetric stellarator configuration. Flexibility and accurate realization of its complex 3D geometry were key requirements affecting the design and construction. While the project was terminated before completing construction, there were significant engineering accomplishments in design, fabrication, and assembly. The design of the stellarator core device was completed. All of the modular coils, toroidal field coils, and vacuum vessel sectors were fabricated. Critical assembly steps were demonstrated. Engineering advances were made in the application of CAD modeling, structural analysis, and accurate fabrication of complex-shaped components and subassemblies. The engineering accomplishments of the project are summarized

  13. A Knowledge Engineering Method for New Product Development

    E-Print Network [OSTI]

    Perry, Nicolas; 10.3166/jds.19.117-133

    2012-01-01

    Engineering activities involve large groups of people from different domains and disciplines. They often generate important information flows that are difficult to manage. To face these difficulties, a knowledge engineering process is necessary to structure the information and its use. This paper presents a deployment of a knowledge capitalization process based on the enrichment of MOKA methodology to support the integration of Process Planning knowledge in a CAD System. Our goal is to help different actors to work collaboratively by proposing one referential view of the domain, the context and the objectives assuming that it will help them in better decision-making.

  14. Methods for simultaneous control of lignin content and composition, and cellulose content in plants

    DOE Patents [OSTI]

    Chiang, Vincent Lee C.; Li, Laigeng

    2005-02-15

    The present invention relates to a method of concurrently introducing multiple genes into plants and trees is provided. The method includes simultaneous transformation of plants with multiple genes from the phenylpropanoid pathways including 4CL, CAld5H, AldOMT, SAD and CAD genes and combinations thereof to produce various lines of transgenic plants displaying altered agronomic traits. The agronomic traits of the plants are regulated by the orientation of the specific genes and the selected gene combinations, which are incorporated into the plant genome.

  15. Rice consumption and risk of cardiovascular disease: results from a pooled analysis of 3 U.S. cohorts

    E-Print Network [OSTI]

    Muraki, Isao; Wu, Hongyu; Imamura, Fumiaki; Laden, Francine; Rimm, Eric B.; Hu, Frank B.; Willett, Walter C.; Sun, Qi

    2014-11-12

    dietary intake of inorganic arsenic and methylmercury. Cancer Epidemiol Biomarkers Prev 1997;6: 1043–50. 25. U.S. Geological Survey. Trace Elements National Synthesis Project [Internet]. Chula Vista (CA): U.S. Geological Survey [cited 2013 Nov 25... ;101:164–72. Printed in USA. at Cam bridge University Library on February 24, 2015 ajcn.nutrition.org D ow nloaded from 87551.DCSupplemental.html http://ajcn.nutrition.org/content/suppl/2014/11/12/ajcn.114.0 Supplemental Material can be found at: CAD, and stroke...

  16. Interrelationship of variables concerned in a swine testing program 

    E-Print Network [OSTI]

    Barbosa, Antonio Stockler

    1960-01-01

    'r; bimah pc itive cad . ". i-nt f . cc. 't (1 lov 1 I f-c. . th. . be-irLnt!L;. , Qf """?. t. it tc tbA time at which the pigs were 141 days old and 156 pounds of live weight (yeriod 5), and very low and, nonsi~ificant thereafter when they bcccz c... Lnboratorp, for their aaeiatsnoe in onedyai? g tho d . t:" i ra ~ Jirce ~ o ~onto fc ' tj &in'; t Lis t xcsi, 'i ~ &iy i:ife, Xcda, whose encourage. . snt, dedication , ~nd moderate. ", in;-, made t'c ompletion of this worL pos. Jbley 4Tld to 'iihom vhia...

  17. PIPES: A Portable Integrated Piping Engineering Interface System

    SciTech Connect (OSTI)

    Lee, N.L.; Kanga, D. [Bechtel Corp., Gaithersburg, MD (United States)

    1995-12-01

    This paper describes software developed by the authors to integrate and automate several piping engineering applications for high-volume production use in the power and petrochemical industries. The system utilizes piping component geometry from a CAD model together with associated engineering and material data. It produces input for an industry-standard piping isometric drawing program, Electronic Data Interchange information for pipe spool fabrication, and input for several,common pipe stress analysis codes. The piping isometric drawings feature stress analysis data points and material tabulations. The software is based on an open architecture and incorporates rule-driven Expert System technology to provide flexibility and ease of customization.

  18. Breaking Barriers in Polymer Additive Manufacturing

    SciTech Connect (OSTI)

    Love, Lonnie J; Duty, Chad E; Post, Brian K; Lind, Randall F; Lloyd, Peter D; Kunc, Vlastimil; Peter, William H; Blue, Craig A

    2015-01-01

    Additive Manufacturing (AM) enables the creation of complex structures directly from a computer-aided design (CAD). There are limitations that prevent the technology from realizing its full potential. AM has been criticized for being slow and expensive with limited build size. Oak Ridge National Laboratory (ORNL) has developed a large scale AM system that improves upon each of these areas by more than an order of magnitude. The Big Area Additive Manufacturing (BAAM) system directly converts low cost pellets into a large, three-dimensional part at a rate exceeding 25 kg/h. By breaking these traditional barriers, it is possible for polymer AM to penetrate new manufacturing markets.

  19. A Dharani-mantra in the Vinaya-vastu

    E-Print Network [OSTI]

    Pathak, Suniti K.

    1989-01-01

    offence (Vinaya-pitaka, Culla-vagga, V. 8.2. (PTS edn). See also' KevaUa SuUa (No. 11) Vol. p 214 (PTS edn). 4. Dutt, N. Early Monastic Buddhism p. 153-158, Calcutta, 1960. 5. Sukomal Choudhuri : Contemporary Buddhism in Bangladesh pp 116... dag gis zas sbyar na ji Ita bu yin pa ma ses nasI de rnams kyi sman pa la dris pa dan{ des _ smras pal 'phags pa dag kyed nyid kyi Slon pa beom Idan 'das ei thams cad (46b:2) mkhyen pa thams edd gzigs pa kho ns nyid yin tel de nyid mkhyen Ie zhes...

  20. Web 2.0 and Geospatial Convergence

    E-Print Network [OSTI]

    Zeiss, Geoff

    2007-11-14

    Web 2.0 and Geospatial Convergence Geoff Zeiss, Director of Technology 6th Annual GIS Day @ KU Symposium © 2005 Autodesk 2 Worldwide Challenges © 2005 Autodesk 3 Global Climate Change The Norwegian Nobel Committee has decided that the Nobel Peace... Technologies © 2005 Autodesk 14 Location-enabling IT GIS Ge ne ral IT Ge ne ral IT Ge osp ati al en ab led 2005 / 2006 Examples: Web search, RDBMS, CAD, architectural design, engineering, … © 2005 Autodesk 15 Open Standards October 2007 © 2005 Autodesk 16 Web...

  1. SNL Mechanical Computer Aided Design (MCAD) guide 2007.

    SciTech Connect (OSTI)

    Moore, Brandon; Pollice, Stephanie L.; Martinez, Jack R.

    2007-12-01

    This document is considered a mechanical design best-practice guide to new and experienced designers alike. The contents consist of topics related to using Computer Aided Design (CAD) software, performing basic analyses, and using configuration management. The details specific to a particular topic have been leveraged against existing Product Realization Standard (PRS) and Technical Business Practice (TBP) requirements while maintaining alignment with sound engineering and design practices. This document is to be considered dynamic in that subsequent updates will be reflected in the main title, and each update will be published on an annual basis.

  2. Integration of Heat Transfer, Stress, and Particle Trajectory Simulation

    SciTech Connect (OSTI)

    Thuc Bui; Michael Read; Lawrence ives

    2012-05-17

    Calabazas Creek Research, Inc. developed and currently markets Beam Optics Analyzer (BOA) in the United States and abroad. BOA is a 3D, charged particle optics code that solves the electric and magnetic fields with and without the presence of particles. It includes automatic and adaptive meshing to resolve spatial scales ranging from a few millimeters to meters. It is fully integrated with CAD packages, such as SolidWorks, allowing seamless geometry updates. The code includes iterative procedures for optimization, including a fully functional, graphical user interface. Recently, time dependent, particle in cell capability was added, pushing particles synchronically under quasistatic electromagnetic fields to obtain particle bunching under RF conditions. A heat transfer solver was added during this Phase I program. Completed tasks include: (1) Added a 3D finite element heat transfer solver with adaptivity; (2) Determined the accuracy of the linear heat transfer field solver to provide the basis for development of higher order solvers in Phase II; (3) Provided more accurate and smoother power density fields; and (4) Defined the geometry using the same CAD model, while maintaining different meshes, and interfacing the power density field between the particle simulator and heat transfer solvers. These objectives were achieved using modern programming techniques and algorithms. All programming was in C++ and parallelization in OpenMP, utilizing state-of-the-art multi-core technology. Both x86 and x64 versions are supported. The GUI design and implementation used Microsoft Foundation Class.

  3. Clarification of Institutional Controls at the Rocky Flats Site Central Operable Unit and Implementation of the Soil Disturbance Review Plan - 13053

    SciTech Connect (OSTI)

    DiSalvo, Rick; Surovchak, Scott; Spreng, Carl; Moritz, Vera

    2013-07-01

    Cleanup and closure of DOE's Rocky Flats Site in Colorado, which was placed on the CERCLA National Priority List in 1989, was accomplished under CERCLA, RCRA, and the Colorado Hazardous Waste Act (CHWA). The physical cleanup work was completed in late 2005 and all buildings and other structures that composed the Rocky Flats industrial complex were removed from the surface, but remnants remain in the subsurface. Other remaining features include two landfills closed in place with covers, four groundwater treatment systems, and surface water and groundwater monitoring systems. Under the 2006 Corrective Action Decision/Record of Decision for Rocky Flats Plant (US DOE) Peripheral Operable Unit and the Central Operable Unit (CAD/ROD), the response actions selected for the Central Operable Unit (OU) are institutional controls (ICs), physical controls, and continued monitoring and maintenance. The objectives of these ICs were to prevent unacceptable exposure to remaining subsurface contamination and to prevent contaminants from mobilizing to surface water and to prevent interfering with the proper functioning of the engineered components of the remedy. An amendment in 2011 of the 2006 CAD/ROD clarified the ICs to prevent misinterpretation that would prohibit work to manage and maintain the Central OU property. The 2011 amendment incorporated a protocol for a Soil Disturbance Review Plan for work subject to ICs that requires approval from the State and public notification by DOE prior to conducting approved soil-disturbing work. (authors)

  4. Automated detection of lung nodules in low-dose computed tomography

    E-Print Network [OSTI]

    Cascio, D; Chincarini, A; De Nunzio, G; Delogu, P; Fantacci, M E; Gargano, G; Gori, I; Masala, G L; Martinez, A Preite; Retico, A; Santoro, M; Spinelli, C; Tarantino, T

    2007-01-01

    A computer-aided detection (CAD) system for the identification of pulmonary nodules in low-dose multi-detector computed-tomography (CT) images has been developed in the framework of the MAGIC-5 Italian project. One of the main goals of this project is to build a distributed database of lung CT scans in order to enable automated image analysis through a data and cpu GRID infrastructure. The basic modules of our lung-CAD system, consisting in a 3D dot-enhancement filter for nodule detection and a neural classifier for false-positive finding reduction, are described. The system was designed and tested for both internal and sub-pleural nodules. The database used in this study consists of 17 low-dose CT scans reconstructed with thin slice thickness (~300 slices/scan). The preliminary results are shown in terms of the FROC analysis reporting a good sensitivity (85% range) for both internal and sub-pleural nodules at an acceptable level of false positive findings (1-9 FP/scan); the sensitivity value remains very hig...

  5. Numerical Verification of the Power Transfer and Wakefield Coupling in the CLIC Two-Beam Accelerator

    E-Print Network [OSTI]

    Candel, Arno; NG, C; Rawat, V; Schussman, G; Ko, K; Syratchev, I; Grudiev, A; Wuensch, W

    2011-01-01

    The Compact Linear Collider (CLIC) provides a path to a multi-TeV accelerator to explore the energy frontier of High Energy Physics. Its two-beam accelerator (TBA) concept envisions complex 3D structures, which must be modeled to high accuracy so that simulation results can be directly used to prepare CAD drawings for machining. The required simulations include not only the fundamental mode properties of the accelerating structures but also the Power Extraction and Transfer Structure (PETS), as well as the coupling between the two systems. Time-domain simulations will be performed to understand pulse formation, wakefield damping, fundamental power transfer and wakefield coupling in these structures. Applying SLAC’s parallel finite element code suite, these large-scale problems will be solved on some of the largest supercomputers available. The results will help to identify potential issues and provide new insights on the design, leading to further improvements on the novel two-beam accelerator scheme.

  6. Comparison of the Window-Frame RHIC-abort kicker with C-type Kicker

    SciTech Connect (OSTI)

    Tsoupas, N.; Hahn, H.; Meng, W.; Severance, Michael; McMahan, Brandon

    2014-08-26

    The high intensity proton bunches (~2.5x1011 p/bunch ) circulating in RHIC increase the temperature of the ferrite-made RHIC-abort-kickers above the Curie point; as a result, the kickers cannot provide the required field to abort the beam at the beam dump. A team of experts in the CAD department worked on modifying the design of the window-frame RHIC-abort kicker to minimize the hysteresis losses responsible for the increase of the ferrite’s temperature. In this technical note we report some results from the study of two possible modifications of the window-frame RHIC-abort kicker, and we compare these results with those of a propose C-type RHIC-abort kicker. We also include an Appendix where we describe a method which may further reduce the hysteresis losses of the window-frame kicker.

  7. Fabrication and Testing of Deflecting Cavities for APS

    SciTech Connect (OSTI)

    Mammosser, John; Wang, Haipeng; Rimmer, Robert; Jim, Henry; Katherine, Wilson; Dhakal, Pashupati; Ali, Nassiri; Jim, Kerby; Jeremiah, Holzbauer; Genfa, Wu; Joel, Fuerst; Yawei, Yang; Zenghai, Li

    2013-09-01

    Jefferson Lab (Newport News, Virginia) in collaboration with Argonne National Laboratory (Argonne, IL) has fabricated and tested four first article, 2.8 GHz, deflecting SRF cavities, for Argonne's Short-Pulse X-ray (SPX) project. These cavities are unique in many ways including the fabrication techniques in which the cavity cell and waveguides were fabricated. These cavity subcomponents were milled from bulk large grain niobium ingot material directly from 3D CAD files. No forming of sub components was used with the exception of the beam-pipes. The challenging cavity and helium vessel design and fabrication results from the stringent RF performance requirements required by the project and operation in the APS ring. Production challenges and fabrication techniques as well as testing results will be discussed in this paper.

  8. E-cadherin junction formation involves an active kinetic nucleation process

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Biswas, Kabir H.; Hartman, Kevin L.; Yu, Cheng -han; Harrison, Oliver J.; Song, Hang; Smith, Adam W.; Huang, William Y. C.; Lin, Wan -Chen; Guo, Zhenhuan; Padmanabhan, Anup; et al

    2015-08-19

    Epithelial (E)-cadherin-mediated cell–cell junctions play important roles in the development and maintenance of tissue structure in multicellular organisms. E-cadherin adhesion is thus a key element of the cellular microenvironment that provides both mechanical and biochemical signaling inputs. Here, we report in vitro reconstitution of junction-like structures between native E-cadherin in living cells and the extracellular domain of E-cadherin in a supported membrane. Junction formation in this hybrid live cell-supported membrane configuration requires both active processes within the living cell and a supported membrane with low E-cad-ECD mobility. The hybrid junctions recruit ?-catenin and exhibit remodeled cortical actin. Observations suggest thatmore »the initial stages of junction formation in this hybrid system depend on the trans but not the cis interactions between E-cadherin molecules, and proceed via a nucleation process in which protrusion and retraction of filopodia play a key role.« less

  9. Subdivision based Isogeometric Analysis technique for Electric Field Integral Equations for Simply Connected Structures

    E-Print Network [OSTI]

    Li, Jie; Liu, Beibei; Tong, Yiying; Shanker, Balasubramaniam

    2015-01-01

    The analysis of electromagnetic scattering has long been performed on a discrete representation of the geometry. This representation is typically continuous but {\\em not} differentiable. The need to define physical quantities on this geometric representation has led to development of sets of basis functions that need to satisfy constraints at the boundaries of the elements/tesselations (viz., continuity of normal or tangential components across element boundaries). For electromagnetics, these result in either curl/div-conforming basis sets. The geometric representation used for analysis is in stark contrast with that used for design, wherein the surface representation is higher order differentiable. Using this representation for {\\em both} geometry and physics on geometry has several advantages, and is eludicated in Hughes et al., Isogeometric analysis: CAD, finite elements, NURBS, exact geometry and mesh refinement, Computer Methods in Applied Mechanics and Engineering 194 (39-41) (2005). Until now, a bulk o...

  10. The role of technology in reducing health care costs. Final project report

    SciTech Connect (OSTI)

    Sill, A.E.; Warren, S.; Dillinger, J.D.; Cloer, B.K.

    1997-08-01

    Sandia National Laboratories applied a systems approach to identifying innovative biomedical technologies with the potential to reduce U.S. health care delivery costs while maintaining care quality. This study was conducted by implementing both top-down and bottom-up strategies. The top-down approach used prosperity gaming methodology to identify future health care delivery needs. This effort provided roadmaps for the development and integration of technology to meet perceived care delivery requirements. The bottom-up approach identified and ranked interventional therapies employed in existing care delivery systems for a host of health-related conditions. Economic analysis formed the basis for development of care pathway interaction models for two of the most pervasive, chronic disease/disability conditions: coronary artery disease (CAD) and benign prostatic hypertrophy (BPH). Societal cost-benefit relationships based on these analyses were used to evaluate the effect of emerging technology in these treatment areas. 17 figs., 48 tabs.

  11. Numerical Verification of the Power Transfer and Wakefield Coupling in the Clic Two-Beam Accelerator

    SciTech Connect (OSTI)

    Candel, Arno; Li, Z.; Ng, C.; Rawat, V.; Schussman, G.; Ko, K.; /SLAC; Syratchev, I.; Grudiev, A.; Wuensch, W.; /CERN

    2011-08-19

    The Compact Linear Collider (CLIC) provides a path to a multi-TeV accelerator to explore the energy frontier of High Energy Physics. Its two-beam accelerator (TBA) concept envisions complex 3D structures, which must be modeled to high accuracy so that simulation results can be directly used to prepare CAD drawings for machining. The required simulations include not only the fundamental mode properties of the accelerating structures but also the Power Extraction and Transfer Structure (PETS), as well as the coupling between the two systems. Time-domain simulations will be performed to understand pulse formation, wakefield damping, fundamental power transfer and wakefield coupling in these structures. Applying SLAC's parallel finite element code suite, these large-scale problems will be solved on some of the largest supercomputers available. The results will help to identify potential issues and provide new insights on the design, leading to further improvements on the novel two-beam accelerator scheme.

  12. Directed light fabrication

    SciTech Connect (OSTI)

    Lewis, G.K.; Nemec, R.; Milewski, J.; Thoma, D.J.; Cremers, D.; Barbe, M.

    1994-09-01

    Directed Light Fabrication (DLF) is a rapid prototyping process being developed at Los Alamos National Laboratory to fabricate metal components. This is done by fusing gas delivered metal powder particles in the focal zone of a laser beam that is, programmed to move along or across the part cross section. Fully dense metal is built up a layer at a time to form the desired part represented by a 3 dimensional solid model from CAD software. Machine ``tool paths`` are created from the solid model that command the movement and processing parameters specific to the DLF process so that the part can be built one layer at a time. The result is a fully dense, near net shape metal part that solidifies under rapid solidification conditions.

  13. A new DFM approach to combine machining and additive manufacturing

    E-Print Network [OSTI]

    Kerbrat, Olivier; Hascoët, Jean-Yves; 10.1016/j.compind.2011.04.003

    2011-01-01

    Design For Manufacturing (DFM) approaches aim to integrate manufacturability aspects during the design stage. Most of DFM approaches usually consider only one manufacturing process, but products competitiveness may be improved by designing hybrid modular products, in which products are seen as 3-D puzzles with modules realized aside by the best manufacturing process and further gathered. A new DFM system is created in order to give quantitative information during the product design stage of which modules will benefit in being machined and which ones will advantageously be realized by an additive process (such as Selective Laser Sintering or laser deposition). A methodology for a manufacturability evaluation in case of a subtractive or an additive manufacturing process is developed and implemented in a CAD software. Tests are carried out on industrial products from automotive industry.

  14. SAMPLE (Sandia Agile MEMS Prototyping, Layout tools, and Education)

    SciTech Connect (OSTI)

    Davies, B.R.; Barron, C.C.; Sniegowski, J.J.; Rodgers, M.S.

    1997-08-01

    The SAMPLE (Sandia Agile MEMS Protyping, Layout tools, and Education) service makes Sandia`s state-of-the-art surface-micromachining fabrication process, known as SUMMiT, available to US industry for the first time. The service provides a short cause and customized computer-aided design (CAD) tools to assist customers in designing micromachine prototypes to be fabricated in SUMMiT. Frequent small-scale manufacturing runs then provide SAMPLE designers with hundreds of sophisticated MEMS (MicroElectroMechanical Systems) chips. SUMMiT (Sandia Ultra-planar, Multi-level MEMS Technology) offers unique surface-micromachining capabilities, including four levels of polycrystalline silicon (including the ground layer), flanged hubs, substrate contacts, one-micron design rules, and chemical-mechanical polishing (CMP) planarization. This paper describes the SUMMiT process, design tools, and other information relevant to the SAMPLE service and SUMMiT process.

  15. Sculplexity: Sculptures of Complexity using 3D printing

    E-Print Network [OSTI]

    Reiss, D S; Evans, T S

    2014-01-01

    We show how to convert models of complex systems such as 2D cellular automata into a 3D printed object. Our method takes into account the limitations inherent to 3D printing processes and materials. Our approach automates the greater part of this task, bypassing the use of CAD software and the need for manual design. As a proof of concept, a physical object representing a modified forest fire model was successfully printed. Automated conversion methods similar to the ones developed here can be used to create objects for research, for demonstration and teaching, for outreach, or simply for aesthetic pleasure. As our outputs can be touched, they may be particularly useful for those with visual disabilities.

  16. Methods for freeform fabrication of structures

    DOE Patents [OSTI]

    Kaufman, Stephen G. (Albuquerque, NM); Spletzer, Barry L. (Albuquerque, NM)

    2000-01-01

    Rapid prototyping methods and apparatuses that produce structures made of continuous-fiber polymer-matrix composites without the use of molds. Instead of using molds, the composite structure is fabricated patch by patch in layers or wraps, using a two- or three-axis stage connected to a rapidly-reconfigurable forming surface, and a robot arm to position the evolving composite structure, which are both programmable devices. Because programmable devices are included, i.e., a robot and a two- or three-axis stage connected to the reconfigurable forming surface, the control program needed to produce a desired shape can be easily modified to automatically generate the desired shape from an electronic model (e.g., using a CAD/CAM system) of the desired (predetermined) shape.

  17. EM modeling of RF drive in DTL tank 4

    SciTech Connect (OSTI)

    Kurennoy, Sergey S.

    2012-06-19

    A 3-D MicroWave Studio model for the RF drive in the LANSCE DTL tank 4 has been built. Both eigensolver and time-domain modeling are used to evaluate maximal fields in the drive module and RF coupling. The LANSCE DTL tank 4 has recently been experiencing RF problems, which may or may not be related to its replaced RF coupler. This situation stimulated a request by Dan Rees to provide EM modeling of the RF drive in the DTL tank 4 (T4). Jim O'Hara provided a CAD model that was imported into the CST Microwave Studio (MWS) and after some modifications became a part of a simplified MWS model of the T4 RF drive. This technical note describes the model and presents simulation results.

  18. Advantages of High Tolerance Measurements in Fusion Environments Applying Photogrammetry

    SciTech Connect (OSTI)

    T. Dodson, R. Ellis, C. Priniski, S. Raftopoulos, D. Stevens, M. Viola

    2009-02-04

    Photogrammetry, a state-of-the-art technique of metrology employing digital photographs as the vehicle for measurement, has been investigated in the fusion environment. Benefits of this high tolerance methodology include relatively easy deployment for multiple point measurements and deformation/distortion studies. Depending on the equipment used, photogrammetric systems can reach tolerances of 25 microns (0.001 in) to 100 microns (0.004 in) on a 3-meter object. During the fabrication and assembly of the National Compact Stellarator Experiment (NCSX) the primary measurement systems deployed were CAD coordinate-based computer metrology equipment and supporting algorithms such as both interferometer-aided (IFM) and absolute distance measurementbased (ADM) laser trackers, as well as portable Coordinate Measurement Machine (CMM) arms. Photogrammetry was employed at NCSX as a quick and easy tool to monitor coil distortions incurred during welding operations of the machine assembly process and as a way to reduce assembly downtime for metrology processes.

  19. Fifty C-terminal Amino Acid Residues are Necessary for the Chaperone Activity of DFF45 But not for the Inhibition of DFF40

    SciTech Connect (OSTI)

    Park, H.

    2009-01-01

    Apoptotic DNA fragmentation, the hallmark of apoptosis, is mediated primarily by caspase-activated DFF40 (CAD) nuclease. DFF40 exists as a heterodimer with DFF45 (ICAD), which is a specific chaperone and inhibitor of DFF40 under normal conditions. To understand the mechanism through which the DFF40/DFF45 system is regulated, we analyzed the structural and biochemical properties of apoptotic DNA fragmentation mediated by DFF40/DFF45. Using limited proteolysis, we show that residues 1-281 of DFF45 form a rigid, crystallized domain, whereas the loop formed by residues 277-281 is accessible by trypsin. These results show that the C-terminal helix formed by residues 281-300 is dynamic and necessary for the chaperone activity of DFF45, but not for inhibition of DFF40.

  20. Fast Compact Laser Shutter Using a Direct Current Motor and 3D Printing

    E-Print Network [OSTI]

    Zhang, Grace H; Kawasaki, Akio; Vuleti?, Vladan

    2015-01-01

    We present a mechanical laser shutter design that utilizes a DC electric motor to rotate a blade which blocks and unblocks a light beam. The blade and the main body of the shutter are modeled with computer aided design (CAD) and are produced by 3D printing. Rubber flaps are used to limit the blade's range of motion, reducing vibrations and preventing undesirable blade oscillations. At its nominal operating voltage, the shutter achieves a switching speed of (1.22 $\\pm$ 0.02) m/s with 1 ms activation delay and 10 $\\mu$s jitter in its timing performance. The shutter design is simple, easy to replicate, and highly reliable, showing no failure or degradation in performance over more than $10^8$ cycles.

  1. SU-E-T-50: Automatic Validation of Megavoltage Beams Modeled for Clinical Use in Radiation Therapy

    SciTech Connect (OSTI)

    Melchior, M; Salinas Aranda, F; Sciutto, S; Dodat, D; Larragueta, N

    2014-06-01

    Purpose: To automatically validate megavoltage beams modeled in XiO™ 4.50 (Elekta, Stockholm, Sweden) and Varian Eclipse™ Treatment Planning Systems (TPS) (Varian Associates, Palo Alto, CA, USA), reducing validation time before beam-on for clinical use. Methods: A software application that can automatically read and analyze DICOM RT Dose and W2CAD files was developed using MatLab integrated development environment.TPS calculated dose distributions, in DICOM RT Dose format, and dose values measured in different Varian Clinac beams, in W2CAD format, were compared. Experimental beam data used were those acquired for beam commissioning, collected on a water phantom with a 2D automatic beam scanning system.Two methods were chosen to evaluate dose distributions fitting: gamma analysis and point tests described in Appendix E of IAEA TECDOC-1583. Depth dose curves and beam profiles were evaluated for both open and wedged beams. Tolerance parameters chosen for gamma analysis are 3% and 3 mm dose and distance, respectively.Absolute dose was measured independently at points proposed in Appendix E of TECDOC-1583 to validate software results. Results: TPS calculated depth dose distributions agree with measured beam data under fixed precision values at all depths analyzed. Measured beam dose profiles match TPS calculated doses with high accuracy in both open and wedged beams. Depth and profile dose distributions fitting analysis show gamma values < 1. Relative errors at points proposed in Appendix E of TECDOC-1583 meet therein recommended tolerances.Independent absolute dose measurements at points proposed in Appendix E of TECDOC-1583 confirm software results. Conclusion: Automatic validation of megavoltage beams modeled for their use in the clinic was accomplished. The software tool developed proved efficient, giving users a convenient and reliable environment to decide whether to accept or not a beam model for clinical use. Validation time before beam-on for clinical use was reduced to a few hours.

  2. Crusader Automated Docking System: Technology support for the Crusader Resupply Team. Interim report, Ammunition Logistics Program

    SciTech Connect (OSTI)

    Kring, C.T.; Varma, V.K.; Jatko, W.B.

    1995-11-01

    The US Army and Team Crusader (United Defense, Lockheed Martin Armament Systems, etc.) are developing the next generation howitzer, the Crusader. The development program includes an advanced, self-propelled liquid propellant howitzer and a companion resupply vehicle. The resupply vehicle is intended to rendezvous with the howitzer near the battlefront and replenish ammunition, fuel, and other material. The Army has recommended that Crusader incorporate new and innovative technologies to improve performance and safety. One conceptual design proposes a robotic resupply boom on the resupply vehicle to upload supplies to the howitzer. The resupply boom would normally be retracted inside the resupply vehicle during transit. When the two vehicles are within range of the resupply boom, the boom would be extended to a receiving port on the howitzer. In order to reduce exposure to small arms fire or nuclear, biological, and chemical hazards, the crew would remain inside the resupply vehicle during the resupply operation. The process of extending the boom and linking with the receiving port is called docking. A boom operator would be designated to maneuver the boom into contact with the receiving port using a mechanical joystick. The docking operation depends greatly upon the skill of the boom operator to manipulate the boom into docking position. Computer simulations at the National Aeronautics and Space Administration have shown that computer-assisted or autonomous docking can improve the ability of the operator to dock safely and quickly. This document describes the present status of the Crusader Autonomous Docking System (CADS) implemented at Oak Ridge National laboratory (ORNL). The purpose of the CADS project is to determine the feasibility and performance limitations of vision systems to satisfy the autonomous docking requirements for Crusader and conduct a demonstration under controlled conditions.

  3. Onboard functional and molecular imaging: A design investigation for robotic multipinhole SPECT

    SciTech Connect (OSTI)

    Bowsher, James, E-mail: james.bowsher@duke.edu; Giles, William; Yin, Fang-Fang [Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27710 and Medical Physics Graduate Program, Duke University, Durham, North Carolina 27710 (United States)] [Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27710 and Medical Physics Graduate Program, Duke University, Durham, North Carolina 27710 (United States); Yan, Susu [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27710 (United States)] [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27710 (United States); Roper, Justin [Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27710 (United States)] [Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27710 (United States)

    2014-01-15

    Purpose: Onboard imaging—currently performed primarily by x-ray transmission modalities—is essential in modern radiation therapy. As radiation therapy moves toward personalized medicine, molecular imaging, which views individual gene expression, may also be important onboard. Nuclear medicine methods, such as single photon emission computed tomography (SPECT), are premier modalities for molecular imaging. The purpose of this study is to investigate a robotic multipinhole approach to onboard SPECT. Methods: Computer-aided design (CAD) studies were performed to assess the feasibility of maneuvering a robotic SPECT system about a patient in position for radiation therapy. In order to obtain fast, high-quality SPECT images, a 49-pinhole SPECT camera was designed which provides high sensitivity to photons emitted from an imaging region of interest. This multipinhole system was investigated by computer-simulation studies. Seventeen hot spots 10 and 7 mm in diameter were placed in the breast region of a supine female phantom. Hot spot activity concentration was six times that of background. For the 49-pinhole camera and a reference, more conventional, broad field-of-view (FOV) SPECT system, projection data were computer simulated for 4-min scans and SPECT images were reconstructed. Hot-spot localization was evaluated using a nonprewhitening forced-choice numerical observer. Results: The CAD simulation studies found that robots could maneuver SPECT cameras about patients in position for radiation therapy. In the imaging studies, most hot spots were apparent in the 49-pinhole images. Average localization errors for 10-mm- and 7-mm-diameter hot spots were 0.4 and 1.7 mm, respectively, for the 49-pinhole system, and 3.1 and 5.7 mm, respectively, for the reference broad-FOV system. Conclusions: A robot could maneuver a multipinhole SPECT system about a patient in position for radiation therapy. The system could provide onboard functional and molecular imaging with 4-min scan times.

  4. Preradiotherapy Calcium Scores of the Coronary Arteries in a Cohort of Women With Early-Stage Breast Cancer: A Comparison With a Cohort of Healthy Women

    SciTech Connect (OSTI)

    Mast, Mirjam E.; Heijenbrok, Mark W.; Petoukhova, Anna L.; Scholten, Astrid N.; Schreur, Joop H.M.; Struikmans, Henk

    2012-07-01

    Purpose: Breast cancer radiotherapy has been associated with an increased risk of cardiac toxicity. However, no data are available on the probability of developing coronary artery disease (CAD) in breast cancer patients when compared with healthy women. Therefore, baseline coronary artery calcium (CAC) scores, as an accepted tool to predict CAD, were determined and compared with the CAC scores of a healthy, asymptomatic cohort, the Multi-Ethnic Study of Atherosclerosis (MESA) cohort. Methods and Materials: Eighty consecutive patients with ductal carcinoma in situ or infiltrative breast cancer referred for radiotherapy after breast-conserving surgery were included in our study. Their cardiovascular risk profile was registered, and a 64 multislice CT scan was performed. The CAC scores of an unselected (Caucasian only) Radiotherapy Centre West (RCWEST) cohort, as well as of those of a selected (comorbidity and race adjusted) RCWEST cohort, were determined. The scores of both cohorts were compared with those of the female (Caucasian only) MESA cohort. Results: For the unselected RCWEST cohort (n = 62) we found significant (p < .01) higher scores for women in the 55-64 age category compared with those of the MESA cohort. In the selected cohort (n = 55) the CAC scores of the women in the age category 55-64 were significantly (p = .02) higher compared with the MESA cohort. No significant differences were noted in the other age categories. Conclusion: Both cohorts revealed that CAC scores in the 55-64 age category were significantly higher than the CAC scores in the asymptomatic (female) MESA population. These data suggest that breast cancer patients bear a higher risk of developing coronary heart disease before the start of radiotherapy. Therefore, measures to decrease cardiac dose further in breast cancer radiotherapy are even more important.

  5. Advanced numerical methods in mesh generation and mesh adaptation

    SciTech Connect (OSTI)

    Lipnikov, Konstantine; Danilov, A; Vassilevski, Y; Agonzal, A

    2010-01-01

    Numerical solution of partial differential equations requires appropriate meshes, efficient solvers and robust and reliable error estimates. Generation of high-quality meshes for complex engineering models is a non-trivial task. This task is made more difficult when the mesh has to be adapted to a problem solution. This article is focused on a synergistic approach to the mesh generation and mesh adaptation, where best properties of various mesh generation methods are combined to build efficiently simplicial meshes. First, the advancing front technique (AFT) is combined with the incremental Delaunay triangulation (DT) to build an initial mesh. Second, the metric-based mesh adaptation (MBA) method is employed to improve quality of the generated mesh and/or to adapt it to a problem solution. We demonstrate with numerical experiments that combination of all three methods is required for robust meshing of complex engineering models. The key to successful mesh generation is the high-quality of the triangles in the initial front. We use a black-box technique to improve surface meshes exported from an unattainable CAD system. The initial surface mesh is refined into a shape-regular triangulation which approximates the boundary with the same accuracy as the CAD mesh. The DT method adds robustness to the AFT. The resulting mesh is topologically correct but may contain a few slivers. The MBA uses seven local operations to modify the mesh topology. It improves significantly the mesh quality. The MBA method is also used to adapt the mesh to a problem solution to minimize computational resources required for solving the problem. The MBA has a solid theoretical background. In the first two experiments, we consider the convection-diffusion and elasticity problems. We demonstrate the optimal reduction rate of the discretization error on a sequence of adaptive strongly anisotropic meshes. The key element of the MBA method is construction of a tensor metric from hierarchical edge-based error estimates. We conclude that the quasi-optimal mesh must be quasi-uniform in this metric. All numerical experiments are based on the publicly available Ani3D package, the collection of advanced numerical instruments.

  6. Simple visualization techniques for die casting part and die design. Final report, July 1, 1995--September 30, 1997

    SciTech Connect (OSTI)

    Miller, R.A.; Lu, S.C.; Rebello, A.B.

    1998-05-01

    The objective of this work was to develop and test die casting design evaluation techniques based on the visualization of geometric data that is related to potential defects of problems. Specifically, thickness information is used to provide insight into potential thermal problems in the part and die. Distance from the gate and a special type of animation of the fill pattern is used to provide an assessment of gate, vent and overflow locations. Techniques have been developed to convert part design information in the form of STL files to a volume-based representation called a voxel model. The use of STL files makes the process CAD system independent. Once in voxel form, methods that were developed in this work are used to identify thick regions in the part, thin regions in the part and/or die, distance from user specified entry locations (gates), and the qualitative depiction of the fill pattern. The methods were tested with a prototype implementation on the UNIX platform. The results of comparisons with numerical simulation and field reported defects were surprisingly good. The fill-related methods were also compared against short-shots and a water analog study using high speed video. The report contains the results of the testing plus detailed background material on the construction of voxel models, the methods used for displaying results, and the computational geometric reasoning methods used to create die casting-related information form the voxel model for display to the user.

  7. Simple visualization techniques for die casting part and die design. Final report, July 1, 1995--September 30, 1997

    SciTech Connect (OSTI)

    Miller, R.A.; Lu, S.C.; Rebello, A.B.

    1998-05-01

    The objective of this work was to develop and test die casting design evaluation techniques based on the visualization of geometric data that is related to potential defects of problems. Specifically, thickness information is used to provide insight into potential thermal problems in the part and die. Distance from the gate and a special type of animation of the fill pattern is used to provide an assessment of gate, vent and overflow locations. Techniques have been developed to convert part design information in the form of STL files to a volume-based representation called a voxel model. The use of STL files makes the process CAD system independent. Once in voxel form, methods that were developed in this work are used to identify thick regions in the part, thin regions in the part and/or die, distance from user specified entry locations (gates), and the qualitative depiction of the fill pattern. The methods were tested with a prototype implementation on the UNIX platform. The results of comparisons with numerical simulation and field reported defects were surprisingly good. The fill-related methods were also compared against short-shots and a water analog study using high speed video. The report contains the results of the testing plus detailed background material on the construction of voxel models, the methods used for displaying results, and the computational geometric reasoning methods used to create die casting-related information from the voxel model for display to the user.

  8. OMS as a decision support tool

    SciTech Connect (OSTI)

    Ordaz, L. [Florida Power Corp. (United States); Stinson, J. [Integraph Corp., Huntsville, AL (United States)

    1999-11-01

    Competitive business drivers have changed Florida Power Corporation`s (FPC`s) management of strategic technology deployments. The utility has re-evaluated many aspects of its business, using new methods and new tools. Delivery 2000, which supports FPC`s corporate vision, will be a key component in meeting the de-regulation and re-regulation challenges of the new millennium. FPC evaluated a variety of systems, or combinations of systems, with over 70 desirable interfaces. To minimize the overwhelming tasks of development, maintenance, and synchronization, FPC decided to use integrated off-the-shelf solutions. This approach changes the following: the methodology for studying and implementing new technology and processes, the justification approach and financial model, and the RFP and selection processes. Using integrated off-the-shelf solutions will have a dramatic effect on everyday operations and will shift the end-users` perspectives from customization to corporate conformity and the acceptance of evolving industry standards. This paper focuses on a segment of a larger suite of technology that is compartmentalized into modular deployments with incremental costs, benefits, and risks. It defines an integrated GIS/OMS/CAD with a goal of reduced service interruption, as measured by SAIDI results. It describes the study methods, financial analysis justification process, and the selected Integraph integrated solution.

  9. Survey of neutron radiography facilities

    SciTech Connect (OSTI)

    Imel, G.R.; McClellan, G.G.

    1996-08-01

    A directory of neutron radiography facilities around the world was informally compiled about ten years ago under the auspices of the American Society for Testing and Materials (ASTM), Subcommittee E7.05 (Radiology, Neutron). The work lay dormant for a number of years, but was revived in earnest in the fall of 1995. At that time, letters were mailed to all the facilities with available addresses in the original directory, requesting updated information. Additionally, information was gathered at the Second Topical meeting on neutron Radiography Facility System Design and Beam Characterization (November, 1995, Shonan Village, Japan). A second mailing was sent for final confirmation and updates in January, 1996. About 75% of the information in the directory has now been confirmed by the facility management. This paper presents a summary of the information contained in the facility directory. An electronic version of the directory in Wordperfect 6.1, uuencode, or rtf format is available by sending e-mail to the authors at imel{at}anl.gov or imel{at}baobab.cad.cea.fr. A WWW site for the directory is presently under construction.

  10. Automating power supply checkout

    SciTech Connect (OSTI)

    Laster, J.; Bruno, D.; D'Ottavio, T.; Drozd, J.; Marr, G.; Mi, C.

    2011-03-28

    Power Supply checkout is a necessary, pre-beam, time-critical function. At odds are the desire to decrease the amount of time to perform the checkout while at the same time maximizing the number and types of checks that can be performed and analyzing the results quickly (in case any problems exist that must be addressed). Controls and Power Supply Group personnel have worked together to develop tools to accomplish these goals. Power Supply checkouts are now accomplished in a time-frame of hours rather than days, reducing the number of person-hours needed to accomplish the checkout and making the system available more quickly for beam development. The goal of the Collider-Accelerator Department (CAD) at Brookhaven National Laboratory is to provide experimenters with collisions of heavy-ions and polarized protons. The Relativistic Heavy-Ion Collider (RHIC) magnets are controlled by 100's of varying types of power supplies. There is a concentrated effort to perform routine maintenance on the supplies during shutdown periods. There is an effort at RHIC to streamline the time needed for system checkout in order to quickly arrive at a period of beam operations for RHIC. This time-critical period is when the checkout of the power supplies is performed as the RHIC ring becomes cold and the supplies are connected to their physical magnets. The checkout process is used to identify problems in voltage and current regulation by examining data signals related to each for problems in settling and regulation (ripple).

  11. A 2D/1D coupling neutron transport method based on the matrix MOC and NEM methods

    SciTech Connect (OSTI)

    Zhang, H.; Zheng, Y.; Wu, H.; Cao, L.

    2013-07-01

    A new 2D/1D coupling method based on the matrix MOC method (MMOC) and nodal expansion method (NEM) is proposed for solving the three-dimensional heterogeneous neutron transport problem. The MMOC method, used for radial two-dimensional calculation, constructs a response matrix between source and flux with only one sweep and then solves the linear system by using the restarted GMRES algorithm instead of the traditional trajectory sweeping process during within-group iteration for angular flux update. Long characteristics are generated by using the customization of commercial software AutoCAD. A one-dimensional diffusion calculation is carried out in the axial direction by employing the NEM method. The 2D and ID solutions are coupled through the transverse leakage items. The 3D CMFD method is used to ensure the global neutron balance and adjust the different convergence properties of the radial and axial solvers. A computational code is developed based on these theories. Two benchmarks are calculated to verify the coupling method and the code. It is observed that the corresponding numerical results agree well with references, which indicates that the new method is capable of solving the 3D heterogeneous neutron transport problem directly. (authors)

  12. Method and apparatus for modeling interactions

    DOE Patents [OSTI]

    Xavier, Patrick G. (Albuquerque, NM)

    2000-08-08

    A method and apparatus for modeling interactions between bodies. The method comprises representing two bodies undergoing translations and rotations by two hierarchical swept volume representations. Interactions such as nearest approach and collision can be modeled based on the swept body representations. The present invention can serve as a practical tool in motion planning, CAD systems, simulation systems, safety analysis, and applications that require modeling time-based interactions. A body can be represented in the present invention by a union of convex polygons and convex polyhedra. As used generally herein, polyhedron includes polygon, and polyhedra includes polygons. The body undergoing translation can be represented by a swept body representation, where the swept body representation comprises a hierarchical bounding volume representation whose leaves each contain a representation of the region swept by a section of the body during the translation, and where the union of the regions is a superset of the region swept by the surface of the body during translation. Interactions between two bodies thus represented can be modeled by modeling interactions between the convex hulls of the finite sets of discrete points in the swept body representations.

  13. Increased expression of microRNA-221 inhibits PAK1 in endothelial progenitor cells and impairs its function via c-Raf/MEK/ERK pathway

    SciTech Connect (OSTI)

    Zhang, Xiaoping; Mao, Haian [Department of Nuclear Medicine, Shanghai 10th People’s Hospital, Tongji University School of Medicine, Shanghai 200072 (China)] [Department of Nuclear Medicine, Shanghai 10th People’s Hospital, Tongji University School of Medicine, Shanghai 200072 (China); Chen, Jin-yuan [Department of Gastrointestinal Surgery, Affiliated Hospital of Guangdong Medical College, Zhanjiang 524001 (China)] [Department of Gastrointestinal Surgery, Affiliated Hospital of Guangdong Medical College, Zhanjiang 524001 (China); Wen, Shengjun [Department of Anatomy and neurobiology, School of Medicine, Tongji University, Shanghai 200072 (China)] [Department of Anatomy and neurobiology, School of Medicine, Tongji University, Shanghai 200072 (China); Li, Dan; Ye, Meng [Department of Nuclear Medicine, Shanghai 10th People’s Hospital, Tongji University School of Medicine, Shanghai 200072 (China)] [Department of Nuclear Medicine, Shanghai 10th People’s Hospital, Tongji University School of Medicine, Shanghai 200072 (China); Lv, Zhongwei, E-mail: zhongweilv126@126.com [Department of Nuclear Medicine, Shanghai 10th People’s Hospital, Tongji University School of Medicine, Shanghai 200072 (China)] [Department of Nuclear Medicine, Shanghai 10th People’s Hospital, Tongji University School of Medicine, Shanghai 200072 (China)

    2013-02-15

    Highlights: ? MicroRNA-221 is upregulated in the endothelial progenitor cells of atherosclerosis patients. ? PAK1 is a direct target of microRNA-221. ? MicroRNA-221 inhibits EPCs proliferation through c-Raf/MEK/ERK pathway. -- Abstract: Coronary artery disease (CAD) is associated with high mortality and occurs via endothelial injury. Endothelial progenitor cells (EPCs) restore the integrity of the endothelium and protect it from atherosclerosis. In this study, we compared the expression of microRNAs (miRNAs) in EPCs in atherosclerosis patients and normal controls. We found that miR-221 expression was significantly up-regulated in patients compared with controls. We predicted and identified p21/Cdc42/Rac1-activated kinase 1 (PAK1) as a novel target of miR-221 in EPCs. We also demonstrated that miR-221 targeted a putative binding site in the 3?UTR of PAK1, and absence of this site was inversely associated with miR-221 expression in EPCs. We confirmed this relationship using a luciferase reporter assay. Furthermore, overexpression of miR-221 in EPCs significantly decreased EPC proliferation, in accordance with the inhibitory effects induced by decreased PAK1. Overall, these findings demonstrate that miR-221 affects the MEK/ERK pathway by targeting PAK1 to inhibit the proliferation of EPCs.

  14. Utilizing the Rapid Ignition Region of HCCI to Attain > 60% BTE

    Broader source: Energy.gov [DOE]

    HCCI is inherently able to produce such rapid combustion (10 ? 100µs) that it is effectively constant volume combustion. Constant volume combustion offers significant opportunity for dramatically improving ICRE BTE. However, to be used with conventional ICRE slider-crank kinematics, HCCI must transformed to a moderated mode of combustion that is far from constant volume ? as it continues over many CAD. Is there an ICRE architecture suitable to HCCI rapid ignition and capable of supporting constant volume combustion? We believe constant volume combustion, using the rapid ignition region of HCCI, can be effectively attained by utilizing a unique free-piston engine architecture. Historic FPE architecture utilizes a controlled stroke and CR ? which impedes the HCCI rapid combustion mode. The FPE architecture shown in this illustration uses a four-cylinder, four-stroke Otto cycle coupled with an indeterminate stroke and CR operating method. It has 30:1 to 50:1 CR and is expected to provide a cycle average BTE > 60%. Both natural gas and gasoline were modeled as fuels in this engine and can realize this CR range with available charge conditioning methods.

  15. Automated assessment of bilateral breast volume asymmetry as a breast cancer biomarker during mammographic screening

    SciTech Connect (OSTI)

    Williams, Alex C; Hitt, Austin N; Voisin, Sophie; Tourassi, Georgia

    2013-01-01

    The biological concept of bilateral symmetry as a marker of developmental stability and good health is well established. Although most individuals deviate slightly from perfect symmetry, humans are essentially considered bilaterally symmetrical. Consequently, increased fluctuating asymmetry of paired structures could be an indicator of disease. There are several published studies linking bilateral breast size asymmetry with increased breast cancer risk. These studies were based on radiologists manual measurements of breast size from mammographic images. We aim to develop a computerized technique to assess fluctuating breast volume asymmetry in screening mammograms and investigate whether it correlates with the presence of breast cancer. Using a large database of screening mammograms with known ground truth we applied automated breast region segmentation and automated breast size measurements in CC and MLO views using three well established methods. All three methods confirmed that indeed patients with breast cancer have statistically significantly higher fluctuating asymmetry of their breast volumes. However, statistically significant difference between patients with cancer and benign lesions was observed only for the MLO views. The study suggests that automated assessment of global bilateral asymmetry could serve as a breast cancer risk biomarker for women undergoing mammographic screening. Such biomarker could be used to alert radiologists or computer-assisted detection (CAD) systems to exercise increased vigilance if higher than normal cancer risk is suspected.

  16. Fuelcell Prototype Locomotive

    SciTech Connect (OSTI)

    David L. Barnes

    2007-09-28

    An international industry-government consortium is developing a fuelcell hybrid switcher locomotive for commercial railway applications and power-to-grid generation applications. The current phase of this on-going project addresses the practicalities of on-board hydrogen storage, fuelcell technology, and hybridity, all with an emphasis on commercially available products. Through practical evaluation using designs from Vehicle Projects’ Fuelcell-Powered Underground Mine Loader Project, the configuration of the fuelcell switcher locomotive changed from using metal-hydride hydrogen storage and a pure fuelcell power plant to using compressed hydrogen storage, a fuelcell-battery hybrid power plant, and fuelcell stack modules from Ballard Power Systems that have been extensively used in the Citaro bus program in Europe. The new overall design will now use a RailPower battery hybrid Green Goat™ as the locomotive platform. Keeping the existing lead-acid batteries, we will replace the 205 kW diesel gen-set with 225 kW of net fuelcell power, remove the diesel fuel tank, and place 14 compressed hydrogen cylinders, capable of storing 70 kg of hydrogen at 350 bar, on the roof. A detailed design with associated CAD models will allow a complete build of the fuelcell-battery hybrid switcher locomotive in the next funded phase.

  17. TREKisM Issue 54 

    E-Print Network [OSTI]

    1987-01-01

    I N U M M 0 C S L N J K IRK A R o L A VON MEN E Y R ARB I L I H RAE I X V L R E MHO C T POI L E L E C I N A J GSA RNA 0 U 0 P S A E S L U P MIL I S L RNA I L 0 H T P T K MUD 0 A N S W T R N I A T PAC A M M H H L R S A E 0 GAR T H DOE S BRA I N A UNA... Y U TTl C M H R L V ERR P ORE YON S K V K R N T P H H B 0 K COP S SOL I E R F Y D L X A L CAD E T U T B T H U CAR U H U 0 C N lOB 0 lOR 0 NAN FDA L TAU lOB I L NIH 0 S ADD R F G G N M RAE P E Y N T M N Y K S U LAP R I N 0 U A T L 0 0 S U L M H X F...

  18. Phase resolved spectroscopy and Kepler photometry of the ultracompact AM CVn binary SDSS J190817.07+394036.4

    E-Print Network [OSTI]

    Kupfer, T; Bloemen, S; Levitan, D; Steeghs, D; Marsh, T R; Rutten, R G M; Nelemans, G; Prince, T A; Fürst, F; Geier, S

    2015-01-01

    {\\it Kepler} satellite photometry and phase-resolved spectroscopy of the ultracompact AM CVn type binary SDSS J190817.07+394036.4 are presented. The average spectra reveal a variety of weak metal lines of different species, including silicon, sulphur and magnesium as well as many lines of nitrogen, beside the strong absorption lines of neutral helium. The phase-folded spectra and the Doppler tomograms reveal an S-wave in emission in the core of the He I 4471 \\AA\\,absorption line at a period of $P_{\\rm orb}=1085.7\\pm2.8$\\,sec identifying this as the orbital period of the system. The Si II, Mg II and the core of some He I lines show an S-wave in absorption with a phase offset of $170\\pm15^\\circ$ compared to the S-wave in emission. The N II, Si III and some helium lines do not show any phase variability at all. The spectroscopic orbital period is in excellent agreement with a period at $P_{\\rm orb}=1085.108(9)$\\,sec detected in the three year {\\it Kepler} lightcurve. A Fourier analysis of the Q6 to Q17 short cad...

  19. Volume Decomposition and Feature Recognition for Hexahedral Mesh Generation

    SciTech Connect (OSTI)

    GADH,RAJIT; LU,YONG; TAUTGES,TIMOTHY J.

    1999-09-27

    Considerable progress has been made on automatic hexahedral mesh generation in recent years. Several automatic meshing algorithms have proven to be very reliable on certain classes of geometry. While it is always worth pursuing general algorithms viable on more general geometry, a combination of the well-established algorithms is ready to take on classes of complicated geometry. By partitioning the entire geometry into meshable pieces matched with appropriate meshing algorithm the original geometry becomes meshable and may achieve better mesh quality. Each meshable portion is recognized as a meshing feature. This paper, which is a part of the feature based meshing methodology, presents the work on shape recognition and volume decomposition to automatically decompose a CAD model into meshable volumes. There are four phases in this approach: (1) Feature Determination to extinct decomposition features, (2) Cutting Surfaces Generation to form the ''tailored'' cutting surfaces, (3) Body Decomposition to get the imprinted volumes; and (4) Meshing Algorithm Assignment to match volumes decomposed with appropriate meshing algorithms. The feature determination procedure is based on the CLoop feature recognition algorithm that is extended to be more general. Results are demonstrated over several parts with complicated topology and geometry.

  20. Measurement of groove features and dimensions of the vertical test cathode and the choke joint of the superconducting electron gun cavity of the Energy Recovery LINAC

    SciTech Connect (OSTI)

    Hammons, L.; Ke, M.

    2011-10-13

    A testing program for the superconducting electron gun cavity that has been designed for the Energy Recovery LINAC is being planned. The goal of the testing program is to characterize the RF properties of the gun cavity at superconducting temperatures and, in particular, to study multipacting that is suspected to be occurring in the choke joint of the cavity where the vertical test cathode is inserted. The testing program will seek to understand the nature and cause of this multipacting and attempt to eliminate it, if possible, by supplying sufficient voltage to the cavity. These efforts are motivated by the multipacting issues that have been observed in the processing of the fine-grain niobium gun cavity. This cavity, which is being processed at Thomas Jefferson National Laboratory for Brookhaven, has encountered multipacting at a gradient of approximately 3 MV/m and, to date, has resisted efforts at elimination. Because of this problem, a testing program is being established here in C-AD that will use the large-grain niobium gun cavity that currently resides at Brookhaven and has been used for room-temperature measurements. The large-grain and fine-cavities are identical in every aspect of construction and only differ in niobium grain size. Thus, it is believed that testing and conditioning of the large-grain cavity should yield important insights about the fine-grain cavity. One element of this testing program involves characterizing the physical features of the choke joint of the cavity where the multipacting is believed to be occurring and, in particular the grooves of the joint. The configuration of the cavity and the vertical test cathode is shown in Figure 1. In addition, it is important to characterize the groove of the vertical test cathode. The grooved nature of these two components was specifically designed to prevent multipacting. However, it is suspected that, because of the chemical processing that the fine-grain gun cavity underwent along with the vertical test cathode, the geometry of these grooves was altered, presenting the possibility that multipacting may, in fact, be occurring in this area and contributing to the low gradients that have been observed in the fine-grain cavity. Therefore, the Survey and Alignment group in C-AD engaged in measurements of the cavity joint, shown in Figure 2 and the cathode weldment, shown in Figure 3 for the purpose of characterizing the grooves in both the cavity and the vertical test cathode and comparing the dimensions of the cathode with those of the prints supplied by Advanced Energy Systems (AES), the original designer and manufacturer of both the test cathode and the electron gun cavity, in preparation to have a new one manufactured. The goal was to ensure that the articles as built matched the design prints in preparation for manufacturing a new vertical test cathode. This report describes the data collected by the Survey group in these efforts. The endeavor was challenging for the group given the millimeter-scale dimensions of the grooves and the requirement for high precision.

  1. Electrical Generation for More-Electric Aircraft Using Solid Oxide Fuel Cells

    SciTech Connect (OSTI)

    Whyatt, Greg A.; Chick, Lawrence A.

    2012-04-01

    This report examines the potential for Solid-Oxide Fuel Cells (SOFC) to provide electrical generation on-board commercial aircraft. Unlike a turbine-based auxiliary power unit (APU) a solid oxide fuel cell power unit (SOFCPU) would be more efficient than using the main engine generators to generate electricity and would operate continuously during flight. The focus of this study is on more-electric aircraft which minimize bleed air extraction from the engines and instead use electrical power obtained from generators driven by the main engines to satisfy all major loads. The increased electrical generation increases the potential fuel savings obtainable through more efficient electrical generation using a SOFCPU. However, the weight added to the aircraft by the SOFCPU impacts the main engine fuel consumption which reduces the potential fuel savings. To investigate these relationships the Boeing 787­8 was used as a case study. The potential performance of the SOFCPU was determined by coupling flowsheet modeling using ChemCAD software with a stack performance algorithm. For a given stack operating condition (cell voltage, anode utilization, stack pressure, target cell exit temperature), ChemCAD software was used to determine the cathode air rate to provide stack thermal balance, the heat exchanger duties, the gross power output for a given fuel rate, the parasitic power for the anode recycle blower and net power obtained from (or required by) the compressor/expander. The SOFC is based on the Gen4 Delphi planar SOFC with assumed modifications to tailor it to this application. The size of the stack needed to satisfy the specified condition was assessed using an empirically-based algorithm. The algorithm predicts stack power density based on the pressure, inlet temperature, cell voltage and anode and cathode inlet flows and compositions. The algorithm was developed by enhancing a model for a well-established material set operating at atmospheric pressure to reflect the effect of elevated pressure and to represent the expected enhancement obtained using a promising cell material set which has been tested in button cells but not yet used to produce full-scale stacks. The predictions for the effect of pressure on stack performance were based on literature. As part of this study, additional data were obtained on button cells at elevated pressure to confirm the validity of the predictions. The impact of adding weight to the 787-8 fuel consumption was determined as a function of flight distance using a PianoX model. A conceptual design for a SOFC power system for the Boeing 787 is developed and the weight estimated. The results indicate that the power density of the stacks must increase by at least a factor of 2 to begin saving fuel on the 787 aircraft. However, the conceptual design of the power system may still be useful for other applications which are less weight sensitive.

  2. Large batch dimensional metrology demonstrated in the example of a LIGA fabricated spring.

    SciTech Connect (OSTI)

    Aigeldinger, Georg; Skala, Dawn M.; Ceremuga, Joseph T.

    2004-04-01

    Deep x-ray lithography in combination with electroforming is capable of producing high precision metal parts in small lot series. This study deals with a high aspect ratio structure with overall dimensions on the order of 10 mm x 7 mm x 1.5 mm, with the smallest line width being 150 {micro}m. The lateral deviation from the design is to be kept to a minimum, preferably below 5 {micro}m. To ensure adequate quality control, a semi-automated metrology technique has been established to measure all parts. While the paper will give a brief overview of all involved techniques, it focuses on the method to measure the top and bottom of the parts and the top of geometries following the process. The instrument used is a View Engineering Voyager V6x12 microscope, which is fully programmable. The microscope allows direct measurement of geometries but also is capable of saving all captured data as point clouds. These point clouds play a central role when evaluating part geometry. After measuring the part, the point cloud is compared to the computer aided design (CAD) contour of the part, using a commercially available software package. The challenge of proper edge lighting on a nickel alloy part is evaluated by varying lighting conditions systematically. Results of two conditions are presented along with a set of optimized parameters. With the introduced set of tools, process flow can be monitored by measuring geometries, e.g. linewidths in every step of the process line. An example for such analysis is given. After delivery of a large batch of parts, extensive numbers of datasets were available allowing the evaluation of the variation of part geometries. Discussed in detail is the deviation from part top to part bottom geometries indicating swelling of the PMMA mold in the electroplating bath.

  3. RSP Tooling Technology

    SciTech Connect (OSTI)

    2001-11-20

    RSP Tooling{trademark} is a spray forming technology tailored for producing molds and dies. The approach combines rapid solidification processing and net-shape materials processing in a single step. The general concept involves converting a mold design described by a CAD file to a tooling master using a suitable rapid prototyping (RP) technology such as stereolithography. A pattern transfer is made to a castable ceramic, typically alumina or fused silica (Figure 1). This is followed by spray forming a thick deposit of a tooling alloy on the pattern to capture the desired shape, surface texture, and detail. The resultant metal block is cooled to room temperature and separated from the pattern. The deposit's exterior walls are machined square, allowing it to be used as an insert in a standard mold base. The overall turnaround time for tooling is about 3 to 5 days, starting with a master. Molds and dies produced in this way have been used in high volume production runs in plastic injection molding and die casting. A Cooperative Research and Development Agreement (CRADA) between the Idaho National Engineering and Environmental Laboratory (INEEL) and Grupo Vitro has been established to evaluate the feasibility of using RSP Tooling technology for producing molds and dies of interest to Vitro. This report summarizes results from Phase I of this agreement, and describes work scope and budget for Phase I1 activities. The main objective in Phase I was to demonstrate the feasibility of applying the Rapid Solidification Process (RSP) Tooling method to produce molds for the manufacture of glass and other components of interest to Vitro. This objective was successfully achieved.

  4. A new friction factor correlation for laminar, single-phase flows through rock fractures

    SciTech Connect (OSTI)

    Nazridoust, K. (Clarkson Univ., Potsdam, NY); Ahmadi, G. (Clarkson Univ., Potsdam, NY); Smith, D.H.

    2006-09-30

    Single-phase flow through fractured media occurs in various situations, such as transport of dissolved contaminants through geological strata, sequestration of carbon dioxide in depleted gas reservoirs, and in primary oil recovery. In the present study, fluid flows through a rock fracture were simulated. The fracture geometry was obtained from the CT scans of a rock fracture produced by the Brazilian method in a sandstone sample. A post-processing code using a CAD package was developed and used to generate the three-dimensional fracture from the CT scan data. Several sections along the fracture were considered and the GambitTM code was used to generate unstructured grids for flow simulations. FLUENTTM was used to analyze the flow conditions through the fracture section for different flow rates. Because of the small aperture of the fractures, the gravitational effects could be neglected. It was confirmed that the pressure drop was dominated by the smallest aperture passages of the fracture. The accuracy of parallel plate models for estimating the pressure drops through fractures was studied. It was shown that the parallel plate flow model with the use of an appropriate effective fracture aperture and inclusion of the tortuosity factor could provide reasonable estimates for pressure drops in the fracture. On the basis of the CFD simulation data, a new expression for the friction factor for flows through fractures was developed. The new model predictions were compared with the simulation results and favorable agreement was found. It was shown that when the length of the fracture and the mean and standard deviation of the fracture are known, the pressure loss as a function of the flow rate could be estimated. These findings may prove useful for design of lab experiments, computational studied of flows through real rock fractures, or inclusions in simulators for large-scale flows in highly fractured rocks.

  5. R&D ERL: Beam dynamics, parameters, and physics to be learned

    SciTech Connect (OSTI)

    Kayran, D.

    2010-02-01

    The R&D ERL facility at BNL aims to demonstrate CW operation of ERL with average beam current in the range of 0.1-1 ampere, combined with very high efficiency of energy recovery. The ERL is being installed in one of the spacious bays in Bldg. 912 of the RHIC/AGS complex (Fig. 1). The bay is equipped with an overhead crane. The facility has a control room, two service rooms and a shielded ERL cave. The control room is located outside of the bay in a separate building. The single story house is used for a high voltage power supply for 1 MW klystron. The two-story unit houses a laser room, the CW 1 MW klystron with its accessories, most of the power supplies and electronics. The ERL R&D program has been started by the Collider Accelerator Department (C-AD) at BNL as an important stepping-stone for 10-fold increase of the luminosity of the Relativistic Heavy Ion Collider (RHIC) using relativistic electron cooling of gold ion beams with energy of 100 GeV per nucleon. Furthermore, the ERL R&D program extends toward a possibility of using 10-20 GeV ERL for future electron-hadron/heavy ion collider, MeRHIC/eRHIC. These projects are the driving force behind the development of ampere-class ERL technology, which will find many applications including light sources and FELs. The intensive R&D program geared towards the construction of the prototype ERL is under way: from development of high efficiency photo-cathodes to the development of new merging system compatible with emittance compensation.

  6. Evaluating the Potential of Commercial GIS for Accelerator Configuration Management

    SciTech Connect (OSTI)

    T.L. Larrieu; Y.R. Roblin; K. White; R. Slominski

    2005-10-10

    The Geographic Information System (GIS) is a tool used by industries needing to track information about spatially distributed assets. A water utility, for example, must know not only the precise location of each pipe and pump, but also the respective pressure rating and flow rate of each. In many ways, an accelerator such as CEBAF (Continuous Electron Beam Accelerator Facility) can be viewed as an ''electron utility''. Whereas the water utility uses pipes and pumps, the ''electron utility'' uses magnets and RF cavities. At Jefferson lab we are exploring the possibility of implementing ESRI's ArcGIS as the framework for building an all-encompassing accelerator configuration database that integrates location, configuration, maintenance, and connectivity details of all hardware and software. The possibilities of doing so are intriguing. From the GIS, software such as the model server could always extract the most-up-to-date layout information maintained by the Survey & Alignment for lattice modeling. The Mechanical Engineering department could use ArcGIS tools to generate CAD drawings of machine segments from the same database. Ultimately, the greatest benefit of the GIS implementation could be to liberate operators and engineers from the limitations of the current system-by-system view of machine configuration and allow a more integrated regional approach. The commercial GIS package provides a rich set of tools for database-connectivity, versioning, distributed editing, importing and exporting, and graphical analysis and querying, and therefore obviates the need for much custom development. However, formidable challenges to implementation exist and these challenges are not only technical and manpower issues, but also organizational ones. The GIS approach would crosscut organizational boundaries and require departments, which heretofore have had free reign to manage their own data, to cede some control and agree to a centralized framework.

  7. Emerging Technologies in the Built Environment: Geographic Information Science (GIS), 3D Printing, and Additive Manufacturing

    SciTech Connect (OSTI)

    New, Joshua Ryan

    2014-01-01

    Abstract 1: Geographic information systems emerged as a computer application in the late 1960s, led in part by projects at ORNL. The concept of a GIS has shifted through time in response to new applications and new technologies, and is now part of a much larger world of geospatial technology. This presentation discusses the relationship of GIS and estimating hourly and seasonal energy consumption profiles in the building sector at spatial scales down to the individual parcel. The method combines annual building energy simulations for city-specific prototypical buildings and commonly available geospatial data in a GIS framework. Abstract 2: This presentation focuses on 3D printing technologies and how they have rapidly evolved over the past couple of years. At a basic level, 3D printing produces physical models quickly and easily from 3D CAD, BIM (Building Information Models), and other digital data. Many AEC firms have adopted 3D printing as part of commercial building design development and project delivery. This presentation includes an overview of 3D printing, discusses its current use in building design, and talks about its future in relation to the HVAC industry. Abstract 3: This presentation discusses additive manufacturing and how it is revolutionizing the design of commercial and residential facilities. Additive manufacturing utilizes a broad range of direct manufacturing technologies, including electron beam melting, ultrasonic, extrusion, and laser metal deposition for rapid prototyping. While there is some overlap with the 3D printing talk, this presentation focuses on the materials aspect of additive manufacturing and also some of the more advanced technologies involved with rapid prototyping. These technologies include design of carbon fiber composites, lightweight metals processing, transient field processing, and more.

  8. Comparison of TG-43 and TG-186 in breast irradiation using a low energy electronic brachytherapy source

    SciTech Connect (OSTI)

    White, Shane A.; Landry, Guillaume; Reniers, Brigitte; Fonseca, Gabriel Paiva; Beaulieu, Luc; Verhaegen, Frank

    2014-06-15

    Purpose: The recently updated guidelines for dosimetry in brachytherapy in TG-186 have recommended the use of model-based dosimetry calculations as a replacement for TG-43. TG-186 highlights shortcomings in the water-based approach in TG-43, particularly for low energy brachytherapy sources. The Xoft Axxent is a low energy (<50 kV) brachytherapy system used in accelerated partial breast irradiation (APBI). Breast tissue is a heterogeneous tissue in terms of density and composition. Dosimetric calculations of seven APBI patients treated with Axxent were made using a model-based Monte Carlo platform for a number of tissue models and dose reporting methods and compared to TG-43 based plans. Methods: A model of the Axxent source, the S700, was created and validated against experimental data. CT scans of the patients were used to create realistic multi-tissue/heterogeneous models with breast tissue segmented using a published technique. Alternative water models were used to isolate the influence of tissue heterogeneity and backscatter on the dose distribution. Dose calculations were performed using Geant4 according to the original treatment parameters. The effect of the Axxent balloon applicator used in APBI which could not be modeled in the CT-based model, was modeled using a novel technique that utilizes CAD-based geometries. These techniques were validated experimentally. Results were calculated using two dose reporting methods, dose to water (D{sub w,m}) and dose to medium (D{sub m,m}), for the heterogeneous simulations. All results were compared against TG-43-based dose distributions and evaluated using dose ratio maps and DVH metrics. Changes in skin and PTV dose were highlighted. Results: All simulated heterogeneous models showed a reduced dose to the DVH metrics that is dependent on the method of dose reporting and patient geometry. Based on a prescription dose of 34 Gy, the average D{sub 90} to PTV was reduced by between ?4% and ?40%, depending on the scoring method, compared to the TG-43 result. Peak skin dose is also reduced by 10%–15% due to the absence of backscatter not accounted for in TG-43. The balloon applicator also contributed to the reduced dose. Other ROIs showed a difference depending on the method of dose reporting. Conclusions: TG-186-based calculations produce results that are different from TG-43 for the Axxent source. The differences depend strongly on the method of dose reporting. This study highlights the importance of backscatter to peak skin dose. Tissue heterogeneities, applicator, and patient geometries demonstrate the need for a more robust dose calculation method for low energy brachytherapy sources.

  9. Evaluation of a multi-atlas based method for segmentation of cardiac CTA data: a large-scale, multicenter, and multivendor study

    SciTech Connect (OSTI)

    Kirisli, H. A.; Schaap, M.; Klein, S.; Papadopoulou, S. L.; Bonardi, M.; Chen, C. H.; Weustink, A. C.; Mollet, N. R.; Vonken, E. J.; Geest, R. J. van der; Walsum, T. van; Niessen, W. J. [Biomedical Imaging Group Rotterdam, Department of Radiology and Department of Medical Informatics, Erasmus MC, 3000 CA Rotterdam (Netherlands); Department of Cardiology, Erasmus MC, 3000 CA Rotterdam (Netherlands) and Department of Radiology, Erasmus MC, 3000 CA Rotterdam (Netherlands); Department of Radiology, Erasmus MC, 3000 CA Rotterdam (Netherlands); Department of Cardiology, Erasmus MC, 3000 CA Rotterdam (Netherlands) and Department of Radiology, Erasmus MC, 3000 CA Rotterdam (Netherlands); Department of Radiology, University Medical Center Utrecht, 3584 CX Utrecht (Netherlands); Department of Radiology, Leiden University Medical Center, 2300 RC Leiden (Netherlands); Biomedical Imaging Group Rotterdam, Department of Radiology and Department of Medical Informatics, Erasmus MC, 3000 CA Rotterdam (Netherlands); Biomedical Imaging Group Rotterdam, Department of Radiology and Department of Medical Informatics, Erasmus MC, 3000 CA Rotterdam (Netherlands) and Faculty of Applied Sciences, Delft University of Technology, 2628 CJ Delft (Netherlands)

    2010-12-15

    Purpose: Computed tomography angiography (CTA) is increasingly used for the diagnosis of coronary artery disease (CAD). However, CTA is not commonly used for the assessment of ventricular and atrial function, although functional information extracted from CTA data is expected to improve the diagnostic value of the examination. In clinical practice, the extraction of ventricular and atrial functional information, such as stroke volume and ejection fraction, requires accurate delineation of cardiac chambers. In this paper, we investigated the accuracy and robustness of cardiac chamber delineation using a multiatlas based segmentation method on multicenter and multivendor CTA data. Methods: A fully automatic multiatlas based method for segmenting the whole heart (i.e., the outer surface of the pericardium) and cardiac chambers from CTA data is presented and evaluated. In the segmentation approach, eight atlas images are registered to a new patient's CTA scan. The eight corresponding manually labeled images are then propagated and combined using a per voxel majority voting procedure, to obtain a cardiac segmentation. Results: The method was evaluated on a multicenter/multivendor database, consisting of (1) a set of 1380 Siemens scans from 795 patients and (2) a set of 60 multivendor scans (Siemens, Philips, and GE) from different patients, acquired in six different institutions worldwide. A leave-one-out 3D quantitative validation was carried out on the eight atlas images; we obtained a mean surface-to-surface error of 0.94{+-}1.12 mm and an average Dice coefficient of 0.93 was achieved. A 2D quantitative evaluation was performed on the 60 multivendor data sets. Here, we observed a mean surface-to-surface error of 1.26{+-}1.25 mm and an average Dice coefficient of 0.91 was achieved. In addition to this quantitative evaluation, a large-scale 2D and 3D qualitative evaluation was performed on 1380 and 140 images, respectively. Experts evaluated that 49% of the 1380 images were very accurately segmented (below 1 mm error) and that 29% were accurately segmented (error between 1 and 3 mm), which demonstrates the robustness of the presented method. Conclusions: A fully automatic method for whole heart and cardiac chamber segmentation was presented and evaluated using multicenter/multivendor CTA data. The accuracy and robustness of the method were demonstrated by successfully applying the method to 1420 multicenter/multivendor data sets.

  10. ITER Generic Diagnostic Upper Port Plug Nuclear Heating and Personnel Dose Rate Assesment Neutronics Analysis using the ATTILA Discrete Ordinates Code

    SciTech Connect (OSTI)

    Russell Feder and Mahmoud Z. Yousef

    2009-05-29

    Neutronics analysis to find nuclear heating rates and personnel dose rates were conducted in support of the integration of diagnostics in to the ITER Upper Port Plugs. Simplified shielding models of the Visible-Infrared diagnostic and of the ECH heating system were incorporated in to the ITER global CAD model. Results for these systems are representative of typical designs with maximum shielding and a small aperture (Vis-IR) and minimal shielding with a large aperture (ECH). The neutronics discrete-ordinates code ATTILA® and SEVERIAN® (the ATTILA parallel processing version) was used. Material properties and the 500 MW D-T volume source were taken from the ITER “Brand Model” MCNP benchmark model. A biased quadrature set equivelant to Sn=32 and a scattering degree of Pn=3 were used along with a 46-neutron and 21-gamma FENDL energy subgrouping. Total nuclear heating (neutron plug gamma heating) in the upper port plugs ranged between 380 and 350 kW for the Vis-IR and ECH cases. The ECH or Large Aperture model exhibited lower total heating but much higher peak volumetric heating on the upper port plug structure. Personnel dose rates are calculated in a three step process involving a neutron-only transport calculation, the generation of activation volume sources at pre-defined time steps and finally gamma transport analyses are run for selected time steps. ANSI-ANS 6.1.1 1977 Flux-to-Dose conversion factors were used. Dose rates were evaluated for 1 full year of 500 MW DT operation which is comprised of 3000 1800-second pulses. After one year the machine is shut down for maintenance and personnel are permitted to access the diagnostic interspace after 2-weeks if dose rates are below 100 ?Sv/hr. Dose rates in the Visible-IR diagnostic model after one day of shutdown were 130 ?Sv/hr but fell below the limit to 90 ?Sv/hr 2-weeks later. The Large Aperture or ECH style shielding model exhibited higher and more persistent dose rates. After 1-day the dose rate was 230 ?Sv/hr but was still at 120 ?Sv/hr 4-weeks later. __________________________________________________

  11. ITER Generic Diagnostic Upper Port Plug Nuclear Heating and Personnel Dose Rate Assesment

    SciTech Connect (OSTI)

    Russell E. Feder and Mahmoud Z. Youssef

    2009-01-28

    Neutronics analysis to find nuclear heating rates and personnel dose rates were conducted in support of the integration of diagnostics in to the ITER Upper Port Plugs. Simplified shielding models of the Visible-Infrared diagnostic and of a large aperture diagnostic were incorporated in to the ITER global CAD model. Results for these systems are representative of typical designs with maximum shielding and a small aperture (Vis-IR) and minimal shielding with a large aperture. The neutronics discrete-ordinates code ATTILA® and SEVERIAN® (the ATTILA parallel processing version) was used. Material properties and the 500 MW D-T volume source were taken from the ITER “Brand Model” MCNP benchmark model. A biased quadrature set equivelant to Sn=32 and a scattering degree of Pn=3 were used along with a 46-neutron and 21-gamma FENDL energy subgrouping. Total nuclear heating (neutron plug gamma heating) in the upper port plugs ranged between 380 and 350 kW for the Vis-IR and Large Aperture cases. The Large Aperture model exhibited lower total heating but much higher peak volumetric heating on the upper port plug structure. Personnel dose rates are calculated in a three step process involving a neutron-only transport calculation, the generation of activation volume sources at pre-defined time steps and finally gamma transport analyses are run for selected time steps. ANSI-ANS 6.1.1 1977 Flux-to-Dose conversion factors were used. Dose rates were evaluated for 1 full year of 500 MW DT operation which is comprised of 3000 1800-second pulses. After one year the machine is shut down for maintenance and personnel are permitted to access the diagnostic interspace after 2-weeks if dose rates are below 100 ?Sv/hr. Dose rates in the Visible-IR diagnostic model after one day of shutdown were 130 ?Sv/hr but fell below the limit to 90 ?Sv/hr 2-weeks later. The Large Aperture style shielding model exhibited higher and more persistent dose rates. After 1-day the dose rate was 230 ?Sv/hr but was still at 120 ?Sv/hr 4-weeks later.

  12. Fundamental studies of energy-and hole/electron- transfer in hydroporphyrin architectures

    SciTech Connect (OSTI)

    Bocian, David F.

    2014-08-20

    The long-term objective of the Bocian/Holten/Lindsey research program is to design, synthesize, and characterize tetrapyrrole-based molecular architectures that absorb sunlight, funnel energy, and separate charge with high efficiency and in a manner compatible with current and future solar-energy conversion schemes. The synthetic tetrapyrroles include porphyrins and hydroporphyrins; the latter classes of molecules encompass analogues of the naturally occurring chlorophylls and bacteriochlorophylls (e.g., chlorins, bacteriochlorins, and their derivatives). The attainment of the goals of the research program requires the close interplay of molecular design and synthesis (Lindsey group), static and time-resolved optical spectroscopic measurements (Holten group), and electrochemical, electron paramagnetic resonance, and resonance Raman studies, as well as density functional theory calculations (Bocian Group). The proposed research encompasses four interrelated themes: (1) Determination of the rates of ground-state hole/electron transfer between (hydro)porphyrins in multipigment arrays as a function of array size, distance between components, linker type, site of linker connection, and frontier molecular orbital composition. (2) Examination of excited-state energy transfer among hydroporphyrins in multipigment arrrays, including both pairwise and non-adjacent transfer, with a chief aim to identify the relative contributions of through-space (Förster) and through-bond (Dexter) mechanisms of energy transfer, including the roles of site of linker connection and frontier molecular orbital composition. (3) Elucidation of the role of substituents in tuning the spectral and electronic properties of bacteriochlorins, with a primary aim of learning how to shift the long-wavelength absorption band deeper into the near-infrared region. (4) Continued development of the software package PhotochemCAD for spectral manipulations and calculations through the compilation of a database of spectra for naturally occurring and synthetic hydroporphyrins. The availability of such data should augment efforts in the design of light-harvesting systems where spectral coverage in the red and near-infrared regions is desired. Collectively, the proposed studies will provide fundamental insights into molecular properties, interactions, and processes relevant to the design of molecular architectures for solar-energy conversion. The accomplishment of these goals is only possible through a highly synergistic program that encompasses molecular design, synthesis, and characterization.

  13. Predictive Engineering Tools for Injection-molded Long-Carbon-Fiber Thermoplastic Composites - FY 2014 Third Quarterly Report

    SciTech Connect (OSTI)

    Nguyen, Ba Nghiep; Sanborn, Scott E.; Mathur, Raj N.; Sharma, Bhisham; Sangid, Michael D.; Wang, Jin; Jin, Xiaoshi; Costa, Franco; Gandhi, Umesh N.; Mori, Steven; Tucker III, Charles L.

    2014-08-15

    This report describes the technical progresses made during the third quarter of FY 2014: 1) Autodesk introduced the options for fiber inlet condition to the 3D solver. These options are already available in the mid-plane/dual domain solver. 2) Autodesk improved the accuracy of 3D fiber orientation calculation around the gate. 3) Autodesk received consultant services from Prof. C.L. Tucker at the University of Illinois on the implementation of the reduced order model for fiber length, and discussed with Prof. Tucker the methods to reduce memory usage. 4) PlastiComp delivered to PNNL center-gated and edge-fan-gated 20-wt% to 30-wt% LCF/PP and LCF/PA66 (7”x7”x1/8”) plaques molded by the in-line direct injection molding (D-LFT) process. 5) PlastiComp molded ASTM tensile, flexural and impact bars under the same D-LFT processing conditions used for plaques for Certification of Assessment and ascertaining the resultant mechanical properties. 6) Purdue developed a new polishing routine, utilizing the automated polishing machine, to reduce fiber damage during surface preparation. 7) Purdue used a marker-based watershed segmentation routine, in conjunction with a hysteresis thresholding technique, for fiber segmentation during fiber orientation measurement. 8) Purdue validated Purdue’s fiber orientation measurement method using the previous fiber orientation data obtained from the Leeds machine and manually measured data by the University of Illinois. 9) PNNL conducted ASMI mid-plane analyses for a 30wt% LCF/PP plaque and compared the predicted fiber orientations with the measured data provided by Purdue University at the selected locations on this plaque. 10) PNNL put together the DOE 2014 Annual Merit Review (AMR) presentation with the team and presented it at the AMR meetings on June 17, 2014. 11) PNNL built ASMI dual domain models for the Toyota complex part and commenced mold filling analyses of the complex part with different wall thicknesses in order to support part molding. 12) Toyota and Magna discussed with PNNL on tool modification for molding the complex part. Toyota sent the CAD files of the complex part to PNNL to build ASMI models of the part for mold filling analysis to provide guidance to tooling and part molding.

  14. SUPPORT OF GULF OF MEXICO HYDRATE RESEARCH CONSORTIUM: ACTIVITIES TO SUPPORT ESTABLISHMENT OF A SEA FLOOR MONITORING STATION PROJECT

    SciTech Connect (OSTI)

    Paul Higley; J. Robert Woolsey; Ralph Goodman; Vernon Asper; Boris Mizaikoff; Angela Davis

    2005-08-01

    A Consortium, designed to assemble leaders in gas hydrates research, has been established at the University of Mississippi's Center for Marine Resources and Environmental Technology, CMRET. The primary objective of the group is to design and emplace a remote monitoring station on the sea floor in the northern Gulf of Mexico by the year 2005, in an area where gas hydrates are known to be present at, or just below, the sea floor. This mission necessitates assembling a station that will monitor physical and chemical parameters of the sea water and sea floor sediments on a more-or-less continuous basis over an extended period of time. Development of the station allows for the possibility of expanding its capabilities to include biological monitoring, as a means of assessing environmental health. Establishment of the Consortium has succeeded in fulfilling the critical need to coordinate activities, avoid redundancies and communicate effectively among researchers in this relatively new research arena. Complementary expertise, both scientific and technical, has been assembled to innovate research methods and construct necessary instrumentation. A year into the life of this cooperative agreement, we note the following achievements: (1) Progress on the vertical line array (VLA) of sensors: (A) Software and hardware upgrades to the data logger for the prototype vertical line array, including enhanced programmable gains, increased sampling rates, improved surface communications, (B) Cabling upgrade to allow installation of positioning sensors, (C) Adaptation of SDI's Angulate program to use acoustic slant ranges and DGPS data to compute and map the bottom location of the vertical array, (D) Progress in T''0'' delay and timing issues for improved control in data recording, (E) Successful deployment and recovery of the VLA twice during an October, 2003 cruise, once in 830m water, once in 1305m water, (F) Data collection and recovery from the DATS data logger, (G) Sufficient energy supply and normal functioning of the pressure compensated battery even following recharge after the first deployment, (H) Survival of the acoustic modem following both deployments though it was found to have developed a slow leak through the transducer following the second deployment due, presumably, to deployment in excess of 300m beyond its rating. (2) Progress on the Sea Floor Probe: (A) The Sea Floor Probe and its delivery system, the Multipurpose sled have been completed, (B) The probe has been modified to penetrate the <1m blanket of hemipelagic ooze at the water/sea floor interface to provide the necessary coupling of the accelerometer with the denser underlying sediments, (C) The MPS has been adapted to serve as an energy source for both p- and s-wave studies at the station as well as to deploy the horizontal line arrays and the SFP. (3) Progress on the Electromagnetic Bubble Detector and Counter: (A) Components for the prototype have been assembled, including a dedicated microcomputer to control power, readout and logging of the data, all at an acceptable speed, (B) The prototype has been constructed and preliminary data collected, (C) The construction of the field system is underway. (4) Progress on the Acoustic Systems for Monitoring Gas Hydrates: (A) Video recordings of bubbles emitted from a seep in Mississippi Canyon have been made from a submersible dive and the bubbles analyzed with respect to their size, number, and rise rate. These measurements have been used to determine the parameters to build the system capable of measuring gas escaping at the site of the monitoring station, (B) Laboratory tests performed using the project prototype have produced a conductivity data set that is being used to refine parameters of the field model. (5) Progress on the Mid-Infrared Sensor for Continuous Methane Monitoring: (A) Preliminary designs of mounting pieces for electrical components of ''sphereIR'' have been completed using AutoCAD software, (B) The preliminary design of an electronics baseplate has been completed and aided in the optimization of

  15. Demonstration of Air-Power-Assist Engine Technology for Clean Combustion and Direct Energy Recovery in Heavy Duty Application

    SciTech Connect (OSTI)

    Hyungsuk Kang; Chun Tai

    2010-05-01

    The first phase of the project consists of four months of applied research, starting from September 1, 2005 and was completed by December 31, 2005. During this time, the project team heavily relied on highly detailed numerical modeling techniques to evaluate the feasibility of the APA technology. Specifically, (i) A GT-Power{sup TM}engine simulation model was constructed to predict engine efficiency at various operating conditions. Efficiency was defined based on the second-law thermodynamic availability. (ii) The engine efficiency map generated by the engine simulation was then fed into a simplified vehicle model, which was constructed in the Matlab/Simulink environment, to predict fuel consumption of a refuse truck on a simple collection cycle. (iii) Design and analysis work supporting the concept of retrofitting an existing Sturman Industries Hydraulic Valve Actuation (HVA) system with the modifications that are required to run the HVA system with Air Power Assist functionality. A Matlab/Simulink model was used to calculate the dynamic response of the HVA system. Computer aided design (CAD) was done in Solidworks for mechanical design and hydraulic layout. At the end of Phase I, 11% fuel economy improvement was predicted. During Phase II, the engine simulation group completed the engine mapping work. The air handling group made substantial progress in identifying suppliers and conducting 3D modelling design. Sturman Industries completed design modification of the HVA system, which was reviewed and accepted by Volvo Powertrain. In Phase II, the possibility of 15% fuel economy improvement was shown with new EGR cooler design by reducing EGR cooler outlet temperature with APA engine technology from Air Handling Group. In addition, Vehicle Simulation with APA technology estimated 4 -21% fuel economy improvement over a wide range of driving cycles. During Phase III, the engine experimental setup was initiated at VPTNA, Hagerstown, MD. Air Handling system and HVA system were delivered to VPTNA and then assembly of APA engine was completed by June 2007. Functional testing of APA engine was performed and AC and AM modes testing were completed by October 2007. After completing testing, data analysis and post processing were performed. Especially, the models were instrumental in identifying some of the key issues with the experimental HVA system. Based upon the available engine test results during AC and AM modes, the projected fuel economy improvement over the NY composite cycle is 14.7%. This is close to but slightly lower than the originally estimated 18% from ADVISOR simulation. The APA project group demonstrated the concept of APA technology by using simulation and experimental testing. However, there are still exists of technical challenges to meet the original expectation of APA technology. The enabling technology of this concept, i.e. a fully flexible valve actuation system that can handle high back pressure from the exhaust manifold is identified as one of the major technical challenges for realizing the APA concept.

  16. Predictive engineering tools for injection-molded long-carbon-fiber thermoplastic composites - FY 2015 third quarterly report

    SciTech Connect (OSTI)

    Nguyen, Ba Nghiep; Fifield, Leonard S.; Mori, Steven; Gandhi, Umesh N.; Wang, Jin; Costa, Franco; Wollan, Eric J.; Tucker, III, Charles L.

    2015-07-01

    During the third quarter of FY 2015, the following technical progress has been made toward project milestones: 1) Magna oversaw the tool build and prepared the molding plan for the complex part of Phase II. 2) PlastiComp hosted a visit by Magna and Toyota on April 23rd to finalize the molding scope and schedule. The plan for molding trials including selection of molding parameters for both LFT and D-LFT for the U-shape complex part was established. 3) Toyota shipped the U-shape complex part tool to Magna on May 28th, 2015. 4) Plasticomp provided 30wt% LCF/PP and 30wt% LCF/PA66 compounded pellets to Magna for molding the complex part. 5) Magna performed preliminary molding trials on June 2nd, 2015 to validate wall thickness, fill profile, tool temperature and shot size requirements for the complex part. 6) Magna performed the first complex part run on June 16th and 17th, 2015 at Magna’s Composite Centre of Excellence in Concord, ON, Canada. Dale Roland of Plasticomp, and Umesh Gandhi of Toyota also attended the molding. 7) Magna discussed and finalized the plan with PNNL and the team for cutting samples from molded parts at selected locations for fiber orientation and length measurements. 8) Magna provided the computer-aided design (CAD) files of the complex parts with and without ribs to PNNL and Autodesk to build the corresponding ASMI models for injection molding simulations. Magna also provided the actual parameters used. 9) Plasticomp’s provided knowledge and experience of molding LCF materials essential to the successful molding of the parts including optimization of fill speed, tool temperatures, and plasticizing conditions for the 30wt% LCF/PP and 30wt% LCF/PA66 materials in both rib and non-rib versions. 10) Magna molded additional parts for evaluation of mechanical property testing including torsional stiffness on June 29th and 30th, 2015 at Magna’s Composite Center of Excellence. 11) Toyota began preparation for the torsion test of the specimens. Preparation of a computer-aided engineering (CAE) model to predict the performance is in progress. 12) Autodesk fixed an error in the implementation of the proper orthogonal decomposition (POD) calculation of fiber length that had caused the ASMI solution to crash and provided an updated build of ASMI containing the fix. 13)Autodesk reviewed and provided feedback for the complex part molding and measurement locations. 14) Autodesk provided support to set up the workflow for ASMI-ABAQUS® analysis, and provided a fix and workaround for a bug in the ASMI-ABAQUS® output command. 15) Autodesk helped build ASMI analysis models for the complex parts with and without ribs. 16) Autodesk worked on improving the orientation prediction accuracy in the shearing layer for 3D meshes based on comparison to measured data of the plaque moldings. 17) PNNL installed a new ASMI version received from Autodesk and performed comparative analyses to assess mid-plane versus 3D fiber length predictions using the full fiber length model and the reduced-order model (ROM) using POD. 18) PNNL presented the project scope, accomplishments, significant results and future plans to DOE and the USCAR Materials Tech Team on June 3rd, 2015. 19) PNNL discussed the cutting of samples from molded parts and finalized a plan with Magna and the team suggesting the sample size, locations and number of samples per location. 20) PNNL and Autodesk built ASMI models for the complex parts with and without ribs, and preliminary analyses of the part with ribs were conducted using the actual molding parameters received from Magna. 21) PNNL worked on a procedure to extract fiber orientation and length results from a 3D ASMI analysis to a 3D ABAQUS model. This procedure is essential to import ASMI fiber orientation and length to a 3D ABAQUS model of the part allowing future part structural analysis for weight reduction study.

  17. SUPPORT OF GULF OF MEXICO HYDRATE RESEARCH CONSORTIUM: ACTIVITIES TO SUPPORT ESTABLISHMENT OF A SEA FLOOR MONITORING STATION PROJECT

    SciTech Connect (OSTI)

    Paul Higley; J. Robert Woolsey; Ralph Goodman; Vernon Asper; Boris Mizaikoff; Angela Davis

    2005-11-01

    A Consortium, designed to assemble leaders in gas hydrates research, has been established at the University of Mississippi's Center for Marine Resources and Environmental Technology, CMRET. The primary objective of the group is to design and emplace a remote monitoring station on the sea floor in the northern Gulf of Mexico by the year 2005, in an area where gas hydrates are known to be present at, or just below, the sea floor. This mission necessitates assembling a station that will monitor physical and chemical parameters of the sea water and sea floor sediments on a more-or-less continuous basis over an extended period of time. Development of the station allows for the possibility of expanding its capabilities to include biological monitoring, as a means of assessing environmental health. Establishment of the Consortium has succeeded in fulfilling the critical need to coordinate activities, avoid redundancies and communicate effectively among researchers in this relatively new research arena. Complementary expertise, both scientific and technical, has been assembled to promote innovative research methods and construct necessary instrumentation. Noteworthy achievements one year into the extended life of this cooperative agreement include: (1) Progress on the vertical line array (VLA) of sensors: (1a) Repair attempts of the VLA cable damaged in the October >1000m water depth deployment failed; a new design has been tested successfully. (1b) The acoustic modem damaged in the October deployment was repaired successfully. (1c) Additional acoustic modems with greater depth rating and the appropriate surface communications units have been purchased. (1d) The VLA computer system is being modified for real time communications to the surface vessel using radio telemetry and fiber optic cable. (1e) Positioning sensors--including compass and tilt sensors--were completed and tested. (1f) One of the VLAs has been redesigned to collect near sea floor geochemical data. (2) Progress on the Sea Floor Probe: (2a) With the Consortium's decision to divorce its activities from those of the Joint Industries Program (JIP), due to the JIP's selection of a site in 1300m of water, the Sea Floor Probe (SFP) system was revived as a means to emplace arrays in the shallow subsurface until arrangements can be made for boreholes at >1000m water depth. (2b) The SFP penetrometer has been designed and construction begun. (2c) The SFP geophysical and pore-fluid probes have been designed. (3) Progress on the Acoustic Systems for Monitoring Gas Hydrates: (3a) Video recordings of bubbles emitted from a seep in Mississippi Canyon have been analyzed for effects of currents and temperature changes. (3b) Several acoustic monitoring system concepts have been evaluated for their appropriateness to MC118, i.e., on the deep sea floor. (3c) A mock-up system was built but was rejected as too impractical for deployment on the sea floor. (4) Progress on the Electromagnetic Bubble Detector and Counter: (4a) Laboratory tests were performed using bubbles of different sizes in waters of different salinities to test the sensitivity of the. Differences were detected satisfactorily. (4b) The system was field tested, first at the dock and then at the shallow water test site at Cape Lookout Bight where methane bubbles from the sea floor, naturally, in 10m water depth. The system successfully detected peaks in bubbling as spike decreases in conductivity. (5) Progress on the Mid-Infrared Sensor for Continuous Methane Monitoring: (5a) Modeling and design of an optics platform complementary to the constructed electronics platform for successful incorporation into ''sphereIR'' continues. AutoCAD design and manual construction of mounting pieces for major optical components have been completed. (5b) Initial design concepts for IR-ATR sensor probe geometries have been established and evaluated. Initial evaluations of a horizontal ATR (HATR) sensing probe with fiber optic guiding light have been performed and validate the design concept as a potentially viable deep sea sensing pr

  18. Explorer-II: Wireless Self-Powered Visual and NDE Robotic Inspection System for Live Gas Distribution Mains

    SciTech Connect (OSTI)

    Carnegie Mellon University

    2008-09-30

    Carnegie Mellon University (CMU) under contract from Department of Energy/National Energy Technology Laboratory (DoE/NETL) and co-funding from the Northeast Gas Association (NGA), has completed the overall system design, field-trial and Magnetic Flux Leakage (MFL) sensor evaluation program for the next-generation Explorer-II (X-II) live gas main Non-destructive Evaluation (NDE) and visual inspection robot platform. The design is based on the Explorer-I prototype which was built and field-tested under a prior (also DoE- and NGA co-funded) program, and served as the validation that self-powered robots under wireless control could access and navigate live natural gas distribution mains. The X-II system design ({approx}8 ft. and 66 lbs.) was heavily based on the X-I design, yet was substantially expanded to allow the addition of NDE sensor systems (while retaining its visual inspection capability), making it a modular system, and expanding its ability to operate at pressures up to 750 psig (high-pressure and unpiggable steel-pipe distribution mains). A new electronics architecture and on-board software kernel were added to again improve system performance. A locating sonde system was integrated to allow for absolute position-referencing during inspection (coupled with external differential GPS) and emergency-locating. The power system was upgraded to utilize lithium-based battery-cells for an increase in mission-time. The resulting robot-train system with CAD renderings of the individual modules. The system architecture now relies on a dual set of end camera-modules to house the 32-bit processors (Single-Board Computer or SBC) as well as the imaging and wireless (off-board) and CAN-based (on-board) communication hardware and software systems (as well as the sonde-coil and -electronics). The drive-module (2 ea.) are still responsible for bracing (and centering) to drive in push/pull fashion the robot train into and through the pipes and obstacles. The steering modules and their arrangement, still allow the robot to configure itself to perform any-angle (up to 90 deg) turns in any orientation (incl. vertical), and enable the live launching and recovery of the system using custom fittings and a (to be developed) launch-chamber/-tube. The battery modules are used to power the system, by providing power to the robot's bus. The support modules perform the functions of centration for the rest of the train as well as odometry pickups using incremental encoding schemes. The electronics architecture is based on a distributed (8-bit) microprocessor architecture (at least 1 in ea. module) communicating to a (one of two) 32-bit SBC, which manages all video-processing, posture and motion control as well as CAN and wireless communications. The operator controls the entire system from an off-board (laptop) controller, which is in constant wireless communication with the robot train in the pipe. The sensor modules collect data and forward it to the robot operator computer (via the CAN-wireless communications chain), who then transfers it to a dedicated NDE data-storage and post-processing computer for further (real-time or off-line) analysis. The prototype robot system was built and tested indoors and outdoors, outfitted with a Remote-Field Eddy Current (RFEC) sensor integrated as its main NDE sensor modality. An angled launcher, allowing for live launching and retrieval, was also built to suit custom angled launch-fittings from TDW. The prototype vehicle and launcher systems are shown. The complete system, including the in-pipe robot train, launcher, integrated NDE-sensor and real-time video and control console and NDE-data collection and -processing and real-time display, were demonstrated to all sponsors prior to proceeding into final field-trials--the individual components and setting for said acceptance demonstration are shown. The launcher-tube was also used to verify that the vehicle system is capable of operating in high-pressure environments, and is safely deployable using proper evacuating/purging techniques for operation in the po