The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform

Cho-pei Jiang - One of the best experts on this subject based on the ideXlab platform.

  • Development of a novel two‐laser beam stereolithography system
    Rapid Prototyping Journal, 2011
    Co-Authors: Cho-pei Jiang
    Abstract:

    Purpose – The purpose of this paper is to develop a novel two‐laser beam stereolithography system which has the advantages of low cost, Fabrication Time reduction and high accuracy.Design/methodology/approach – The wavelengths of the two semiconductor laser beams are determined to be 405 nm (blue light) and 532 nm (green light), respectively, according to the relative absorbance rate of the visible‐light curable resin (NAF202) used. The blue light laser is suitable for scanning the contour of objects because of its fast absorbance, thus giving a narrow cured depth. The green light laser is better suited to scanning the internal crosshatch to condense the Fabrication Time because of its deep penetration and its high power results in a wide cured width. A photoabsorber, carbon powder with an average diameter of 0.1 μm, is adopted to control the cured layer thickness. An adaptive crosshatch technique is introduced and applied to the Fabrication process. Two benchmarks are proposed and fabricated using the de...

  • development of a novel two laser beam stereolithography system
    Rapid Prototyping Journal, 2011
    Co-Authors: Cho-pei Jiang
    Abstract:

    Purpose – The purpose of this paper is to develop a novel two‐laser beam stereolithography system which has the advantages of low cost, Fabrication Time reduction and high accuracy.Design/methodology/approach – The wavelengths of the two semiconductor laser beams are determined to be 405 nm (blue light) and 532 nm (green light), respectively, according to the relative absorbance rate of the visible‐light curable resin (NAF202) used. The blue light laser is suitable for scanning the contour of objects because of its fast absorbance, thus giving a narrow cured depth. The green light laser is better suited to scanning the internal crosshatch to condense the Fabrication Time because of its deep penetration and its high power results in a wide cured width. A photoabsorber, carbon powder with an average diameter of 0.1 μm, is adopted to control the cured layer thickness. An adaptive crosshatch technique is introduced and applied to the Fabrication process. Two benchmarks are proposed and fabricated using the de...

  • Optimization of scanning path for reducing Fabrication Time in a novel two-laser beam stereolithography system
    2010
    Co-Authors: Cho-pei Jiang, Chang-cheng Chen, Yung-chang Cheng
    Abstract:

    The aim of this study is to develop a novel two-laser beam (TLB) stereolithography system and to optimize scanning path for shortening the Fabrication Time using adaptive crosshatch technique. In the development of TLB system, the wavelengths of the two semiconductor laser beams are determined to be 405 nm (blue light) and 532 nm (green light), respectively, according to the relative absorbance rate of used visible-light curable resin. The blue light laser is suitable for scanning the object contour due to the fast absorbance and caused a narrow cured depth. The green light laser is used for scanning the internal crosshatch for condensing the Fabrication Time because its high power results in a wide cured width and deep penetration. The influence of photoabsorber, carbon powder with average diameter of 0.1 micrometer, is discussed and specified an optimal weight percentage of 1.5 for controlling cured thickness. An adaptive crosshatch technique is introduced and applied into the Fabrication process. In addition, two fan objects with seven blades are fabricated according to the raster scan and adaptive crosshatch scan, respectively. Consequently, the developed system fabricates object quickly with a high accuracy and adaptive crosshatch significantly reduces Fabrication Time.

J. W. Savell - One of the best experts on this subject based on the ideXlab platform.

  • Influence of wholesale lamb marketing options and merchandising styles on retail yield and Fabrication Time
    Journal of animal science, 1997
    Co-Authors: C L Lorenzen, Davey B. Griffin, T R Dockerty, J P Walter, H K Johnson, A M Martin, J. W. Savell
    Abstract:

    Lamb carcasses (n = 94) from five packing plants, selected to vary in weight class and fat thickness, were used to determine retail yield and labor requirements of wholesale lamb Fabrication. Carcasses were allotted randomly according to weight class to be fabricated as whole carcasses (n = 20), three-piece boxes (n = 22), or subprimals (n = 52). Processing Times (seconds) were recorded and wholesale and retail weights (kilograms) were obtained to calculate retail yield. Subprimals were fabricated into bone-in retail cuts or boneless or semi-boneless retail cuts. Retail yield for subprimal lamb legs decreased from 85.3 ±.6% for bone-in to 68.0 ±.7% for a completely boneless retail product. Correspondingly, processing Times increased from 126.1 ± 5.4 s to 542.0 ± 19.2 s for bone-in and boneless legs, respectively. For all subprimals, retail yield percentage tended to decrease and total processing Time increase as cuts were fabricated to boneless or semi-boneless end points compared with a bone-in end point. Percentage retail yield did not differ (P >.05) among whole carcass, three-piece box, and subprimal marketing methods. Total processing Time was shorter for subprimals ( P

  • influence of wholesale lamb marketing options and merchandising styles on retail yield and Fabrication Time
    Journal of Animal Science, 1997
    Co-Authors: C L Lorenzen, T R Dockerty, J P Walter, H K Johnson, A M Martin, D B Griffin, J. W. Savell
    Abstract:

    Lamb carcasses (n = 94) from five packing plants, selected to vary in weight class and fat thickness, were used to determine retail yield and labor requirements of wholesale lamb Fabrication. Carcasses were allotted randomly according to weight class to be fabricated as whole carcasses (n = 20), three-piece boxes (n = 22), or subprimals (n = 52). Processing Times (seconds) were recorded and wholesale and retail weights (kilograms) were obtained to calculate retail yield. Subprimals were fabricated into bone-in retail cuts or boneless or semi-boneless retail cuts. Retail yield for subprimal lamb legs decreased from 85.3 ±.6% for bone-in to 68.0 ±.7% for a completely boneless retail product. Correspondingly, processing Times increased from 126.1 ± 5.4 s to 542.0 ± 19.2 s for bone-in and boneless legs, respectively. For all subprimals, retail yield percentage tended to decrease and total processing Time increase as cuts were fabricated to boneless or semi-boneless end points compared with a bone-in end point. Percentage retail yield did not differ (P >.05) among whole carcass, three-piece box, and subprimal marketing methods. Total processing Time was shorter for subprimals ( P <.05) than for the other two marketing methods.

  • Subprimal purchasing and merchandising decisions for pork: relationship to retail yield and Fabrication Time.
    Journal of animal science, 1996
    Co-Authors: C L Lorenzen, Davey B. Griffin, T R Dockerty, J P Walter, H K Johnson, J. W. Savell
    Abstract:

    Boxed pork was obtained to represent four different purchase specifications (different anatomical separation locations and[or] external fat trim levels) common in the pork industry to conduct a study of retail yields and labor requirements. Bone-in loins (n = 180), boneless loins (n = 94), and Boston butts (n = 148) were assigned randomly to Fabrication styles within subprimals. When comparing cutting styles within subprimals, it was evident that cutting style affected percentage of retail yield and cutting Time. When more bone-in cuts were prepared from bone-in loin subprimals, retail yields ranged from 92.80 +/- .61 to 95.28 +/- .45%, and processing Times ranged from 222.57 +/- 10.13 to 318.99 +/- 7.85 s, from the four suppliers. When more boneless cuts were prepared from bone-in loin subprimals, retail yields ranged from 71.12 +/- 1.10 to 77.92 +/- .77% and processing Times ranged from 453.49 +/- 8.95 to 631.09 +/- 15.04 s from the different loins. Comparing boneless to bone-in cuts from bone-in loins resulted in lower yields and required greater processing Times. Significant variations in yields and Times were found within cutting styles. These differences seemed to have been the result of variation in supplier fat trim level and anatomical separation (primarily scribe length).

I. Takanami - One of the best experts on this subject based on the ideXlab platform.

  • ISPAN - A system for efficiently self-reconstructing E-1 1/2 track switch torus arrays
    Proceedings International Symposium on Parallel Architectures Algorithms and Networks. I-SPAN 2000, 1
    Co-Authors: T. Horita, I. Takanami
    Abstract:

    A mesh-connected processor array consists of many similar processing elements (PEs), which can be executed in both parallel and pipeline processing. For the implementation of an array of large numbers of processors, it is necessary to consider some fault tolerant issues to enhance the (Fabrication-Time) yield and the (run-Time) reliability. We introduce the E-1 1/2 -TS torus array ray model and apply the EAR method (that is an extended approximate reconfiguration method) to the array. We show that the E-1 1/2 -TS torus arrays with the hardware realization of the EAR algorithm are very efficient at the point of the array yield (or reliability) and suitable for run-Time as well as Fabrication-Time fault-tolerance for mesh or torus connected processor arrays even though an additional logic circuit (about 200 gates per processor) is required.

C L Lorenzen - One of the best experts on this subject based on the ideXlab platform.

  • Influence of wholesale lamb marketing options and merchandising styles on retail yield and Fabrication Time
    Journal of animal science, 1997
    Co-Authors: C L Lorenzen, Davey B. Griffin, T R Dockerty, J P Walter, H K Johnson, A M Martin, J. W. Savell
    Abstract:

    Lamb carcasses (n = 94) from five packing plants, selected to vary in weight class and fat thickness, were used to determine retail yield and labor requirements of wholesale lamb Fabrication. Carcasses were allotted randomly according to weight class to be fabricated as whole carcasses (n = 20), three-piece boxes (n = 22), or subprimals (n = 52). Processing Times (seconds) were recorded and wholesale and retail weights (kilograms) were obtained to calculate retail yield. Subprimals were fabricated into bone-in retail cuts or boneless or semi-boneless retail cuts. Retail yield for subprimal lamb legs decreased from 85.3 ±.6% for bone-in to 68.0 ±.7% for a completely boneless retail product. Correspondingly, processing Times increased from 126.1 ± 5.4 s to 542.0 ± 19.2 s for bone-in and boneless legs, respectively. For all subprimals, retail yield percentage tended to decrease and total processing Time increase as cuts were fabricated to boneless or semi-boneless end points compared with a bone-in end point. Percentage retail yield did not differ (P >.05) among whole carcass, three-piece box, and subprimal marketing methods. Total processing Time was shorter for subprimals ( P

  • influence of wholesale lamb marketing options and merchandising styles on retail yield and Fabrication Time
    Journal of Animal Science, 1997
    Co-Authors: C L Lorenzen, T R Dockerty, J P Walter, H K Johnson, A M Martin, D B Griffin, J. W. Savell
    Abstract:

    Lamb carcasses (n = 94) from five packing plants, selected to vary in weight class and fat thickness, were used to determine retail yield and labor requirements of wholesale lamb Fabrication. Carcasses were allotted randomly according to weight class to be fabricated as whole carcasses (n = 20), three-piece boxes (n = 22), or subprimals (n = 52). Processing Times (seconds) were recorded and wholesale and retail weights (kilograms) were obtained to calculate retail yield. Subprimals were fabricated into bone-in retail cuts or boneless or semi-boneless retail cuts. Retail yield for subprimal lamb legs decreased from 85.3 ±.6% for bone-in to 68.0 ±.7% for a completely boneless retail product. Correspondingly, processing Times increased from 126.1 ± 5.4 s to 542.0 ± 19.2 s for bone-in and boneless legs, respectively. For all subprimals, retail yield percentage tended to decrease and total processing Time increase as cuts were fabricated to boneless or semi-boneless end points compared with a bone-in end point. Percentage retail yield did not differ (P >.05) among whole carcass, three-piece box, and subprimal marketing methods. Total processing Time was shorter for subprimals ( P <.05) than for the other two marketing methods.

  • Subprimal purchasing and merchandising decisions for pork: relationship to retail yield and Fabrication Time.
    Journal of animal science, 1996
    Co-Authors: C L Lorenzen, Davey B. Griffin, T R Dockerty, J P Walter, H K Johnson, J. W. Savell
    Abstract:

    Boxed pork was obtained to represent four different purchase specifications (different anatomical separation locations and[or] external fat trim levels) common in the pork industry to conduct a study of retail yields and labor requirements. Bone-in loins (n = 180), boneless loins (n = 94), and Boston butts (n = 148) were assigned randomly to Fabrication styles within subprimals. When comparing cutting styles within subprimals, it was evident that cutting style affected percentage of retail yield and cutting Time. When more bone-in cuts were prepared from bone-in loin subprimals, retail yields ranged from 92.80 +/- .61 to 95.28 +/- .45%, and processing Times ranged from 222.57 +/- 10.13 to 318.99 +/- 7.85 s, from the four suppliers. When more boneless cuts were prepared from bone-in loin subprimals, retail yields ranged from 71.12 +/- 1.10 to 77.92 +/- .77% and processing Times ranged from 453.49 +/- 8.95 to 631.09 +/- 15.04 s from the different loins. Comparing boneless to bone-in cuts from bone-in loins resulted in lower yields and required greater processing Times. Significant variations in yields and Times were found within cutting styles. These differences seemed to have been the result of variation in supplier fat trim level and anatomical separation (primarily scribe length).

T. Horita - One of the best experts on this subject based on the ideXlab platform.

  • ISPAN - A system for efficiently self-reconstructing E-1 1/2 track switch torus arrays
    Proceedings International Symposium on Parallel Architectures Algorithms and Networks. I-SPAN 2000, 1
    Co-Authors: T. Horita, I. Takanami
    Abstract:

    A mesh-connected processor array consists of many similar processing elements (PEs), which can be executed in both parallel and pipeline processing. For the implementation of an array of large numbers of processors, it is necessary to consider some fault tolerant issues to enhance the (Fabrication-Time) yield and the (run-Time) reliability. We introduce the E-1 1/2 -TS torus array ray model and apply the EAR method (that is an extended approximate reconfiguration method) to the array. We show that the E-1 1/2 -TS torus arrays with the hardware realization of the EAR algorithm are very efficient at the point of the array yield (or reliability) and suitable for run-Time as well as Fabrication-Time fault-tolerance for mesh or torus connected processor arrays even though an additional logic circuit (about 200 gates per processor) is required.