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Full-Text Articles in Engineering
The Role Of Air Cargo In California's Goods Movement, H.-S. Jacob Tsao
The Role Of Air Cargo In California's Goods Movement, H.-S. Jacob Tsao
Faculty Publications
Caltrans began a systematic investigation into the role of air cargo in California’s goods movement, as part of the larger development effort for a statewide goods movement strategy, and funded a research project in 1997 for the Institute of Transportation Studies at U.C. Berkeley to (i) gain a broader understanding of the State’s air cargo industry and the role of air cargo in California’s goods movement, (ii) assess the importance of air cargo to the State’s economy, (iii) begin identification of issues hindering efficient air cargo movement in the State, and (iv) explore possible State roles for resolving the issues. …
Binary Multilevel Convolutional Codes With Unequal Error Protection Capabilities, Robert H. Morelos-Zaragoza, Hideki Imai
Binary Multilevel Convolutional Codes With Unequal Error Protection Capabilities, Robert H. Morelos-Zaragoza, Hideki Imai
Faculty Publications
Binary multilevel convolutional codes (CCs) with unequal error protection (UEP) capabilities are studied. These codes belong to the class of generalized concatenated (GC) codes. Binary CCs are used as outer codes. Binary linear block codes of short length, and selected subcodes in their two-way subcode partition chain, are used as inner codes. Multistage decodings are presented that use Viterbi decoders operating on trellises with similar structure to that of the constituent binary CCs. Simulation results of example binary two-level CC's are also reported.
Preparing An Assessment Plan At San Jose State University, Michael Jennings, Thalia Anagnos
Preparing An Assessment Plan At San Jose State University, Michael Jennings, Thalia Anagnos
Faculty Publications
The College of Engineering at San Jose State University is scheduled for an accreditation visit in Fall 1999 and has decided to seek reaccreditation under the ABET 2000 criteria. An assessment implementation project has been active for the past two years within the College; with primary objectives of refining missions for programs, defining program outcome objectives, determining which components to assess, and developing appropriate metrics and methods. Longer term objectives of this project are to establish a continuous quality improvement philosophy in the College and to provide information for the ABET accreditation review.This paper is an evaluation of the status …
Derivation Of An Analytical Model To Calculate Junction Depth In Hgcdte Photodiodes, Stacy H. Gleixner, H. G. Robinson, C. R. Helms
Derivation Of An Analytical Model To Calculate Junction Depth In Hgcdte Photodiodes, Stacy H. Gleixner, H. G. Robinson, C. R. Helms
Faculty Publications
Presents an enhanced analytical model to calculate junction depth and Hg interstitial profile during n-on-p junction formation in HgCdTe photodiodes. Detailed information on the enhanced model; Function of the model; Information on HgCdTe; Detailed information on how the model was obtained.
Battery-Operated Atomic Force Microscope, Burford J. Furman, J. Christman, M. Kearny, F. Wojcik, M. Tortonese
Battery-Operated Atomic Force Microscope, Burford J. Furman, J. Christman, M. Kearny, F. Wojcik, M. Tortonese
Faculty Publications, Mechanical Engineering
The design of a battery-operated atomic force microscope (AFM) using a piezoresistive cantilever is described. The AFM is designed so that all power to drive the scanning tube and detection electronics comes from a self-contained battery. The prototype AFM uses a 6 V, Ni–Cd, camcorder battery, however, any battery that supplies between 6 and 12 V may be used. Scanner control and data acquisition are implemented using commercially available software running on an external computer. The prototype AFM achieves a scan area of 53 by 53 μm, consumes 1.8 W of power, and can scan continuously for about 7 h …
On Block-Coded Modulation Using Unequal Error Protection Codes Over Rayleigh-Fading Channels, Robert H. Morelos-Zaragoza, Tadao Kasami, Shu Lin, Hideki Imai
On Block-Coded Modulation Using Unequal Error Protection Codes Over Rayleigh-Fading Channels, Robert H. Morelos-Zaragoza, Tadao Kasami, Shu Lin, Hideki Imai
Faculty Publications
This paper considers block-coded 8-phase-shift-keying (PSK) modulations for the unequal error protection (UEP) of information transmitted over Rayleigh-fading channels. Both conventional linear block codes and linear UEP (LUEP) codes are combined with a naturally labeled 8-PSK signal set, using the multilevel construction of Imai and Hirakawa (1977). Computer simulation results are presented showing that, over Rayleigh-fading channels, it is possible to improve the coding gain for the most significant bits with the use of binary LUEP codes as constituent codes, in comparison with using conventional binary linear codes alone.