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Journal of Vacuum science & technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena 1992年第6期10卷 3196-3199页

作者： R. A. Ghanbari W. Chu E. E. Moon M. Burkhardt K. Yee D. A. Antoniadis Henry I. Smith M. L. Schattenburg K. W. Rhee R. Bass M. C. Peckerar M. R. Melloch Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge Massachusetts 02139 Center for Space Research Massachusetts Institute of Technology Cambridge Massachusetts 02139 Nanoelectronics Processing Facility U. S. Naval Research Laboratory Washington DC 20375 School of Electrical Engineering Purdue University West Lafayette Indiana 47907

We report on the fabrication of quasi‐one‐dimensional wires on modulation‐doped GaAs/AlGaAs using a novel conformable x‐ray mask technology which allows us to expose arbitrary sized samples, including samples much smaller than the membrane area, using our laboratory’s standard 31 mm‐diam silicon‐nitride x‐ray mask. After optical alignment, the sample and mask are brought into contact electrically, and then loaded into a specially designed cartridge which allows a vacuum to be pulled between mask and substrate. The vacuum causes the x‐ray mask to conform around the sample. We find that a vacuum hold down is necessary to allow easy separation of the sample from the mask with minimal risk to both.

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High-speed optical coherence domain reflectometry: erratum

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Optics letters 1992年第7期17卷 547页

作者： E A Swanson D Huang M R Hee J G Fujimoto C P Lin C A Puliafito Lincoln Laboratory Massachusetts Institute of Technology 244 Wood Street Lexington Massachusetts 02173-9108 Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge Massachusetts 02139 Laser Research Laboratory New England Eye Center Tufts University School of Medicine Boston Massachusetts 02111

No abstract available.

关键词： Coherence Reflectometry

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Uncertain systems: new uncertainty characterization for linear control design

Uncertain systems: new uncertainty characterization for line...

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IEEE Conference on Decision and Control

作者： K. Gu Y.H. Chen Center of Robotics and Advanced Automation School of Electrical Engineering and Computer Science Oakland University Rochester MI USA The George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta GA USA

A characterization of the structure of uncertainty called the generalized matching condition is proposed. The uncertainty is further decomposed into two parts that are 'orthogonal' to each other. On the basis of this decomposition a linear feedback control design is proposed for linear uncertain systems. The control always exists if the generalized matching condition is met. The design is illustrated by a practical example.< >

关键词： Uncertain systems Uncertainty Control design Riccati equations Feedback control Robotics and automation Time varying systems Magnetic levitation Design automation computer science

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Early changes in material properties of rabbit articular cartilage after meniscectomy

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Journal of Orthopaedic Research 1983年第1期1卷 4-12页

作者： Hoch, D.H. Grodzinsky, A.J. Koob, T.J. Albert, M.L. Eyre, D.R. Continuum Electromechanics Laboratory Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge United States Laboratory of Skeletal Disorders Children's Hospital Medical Center Harvard Medical School Boston Massachusetts United States

We have correlated early material and biochemical changes in articular cartilage in a surgical model for cartilage degeneration. Medial meniscectomy was performed on the left knee of 17 adult, female New Zealand white rabbits. The equilibrium Young's modulus of cartilage was assessed by an indentation test in situ at defined sites on the medial and lateral tibial plateaus of the operated and control knees;the cartilage was then excised and analyzed biochemically. Focal changes were consistently observed in the medial surface of the operated knee. The equilibrium modulus and the glycosaminoglycan content fell rapidly, reaching a minimum by 2 weeks after surgery;the lateral tibial surface was essentially unaffected. Six months after surgery, the glycosaminoglycan content had returned to normal and the modulus to near normal. Independent measurements on cored plugs from the medial surface 2 weeks after surgery revealed a significant decrease in both the dynamic stiffness and the streaming potential in the operated knee compared with the control. The findings suggest that normal ambulatory loads in vivo will deform the affected medial cartilage much more than normal. It remains to be seen if altered mechanical stresses are solely responsible for initiating and sustaining matrix remodeling by the chondrocytes. Copyright © 1983 Orthopaedic Research Society

关键词： Cartilage degeneration Glycosaminoglycans Indentation Meniscectomy Osteoarthrosis

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A FLEET ORIENTED ELECTROMAGNETIC-INTERFERENCE CONTROL PROGRAM - EMI TRILOGY .3.

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NAVAL ENGINEERS JOURNAL 1982年第1期94卷 47-50页

作者： LAYL, JN ELLIS, GD LCdr. J.N. Layl USN:was graduated from Purdue University West Lafayette Indiana in 1968 with a B.S. degree in Electrical Engineering. After serving two years onUSS Lofberg (DD-759)as Electronics Material Officer he received his M.S. degree in Electronics Engineering from the Naval Postgraduate School Monterey California and was selected as an Engineering Duty Officer (EDO). While serving as a Ship Superintendent Type Desk Officer and Docking Officer at the Pearl Habor Naval Shipyard he completed a M.S. degree in Systems Management from the University of Southern California. He has also had assignments on the Commander-in-Chief Pacific Staff as the Combat Direction Systems Maintenance Officer Mobile Technical Unit Five as Officer-in-Charge and he is presently at the Pearl Harbor Naval Shipyard as the Combat Systems Officer. LCdr. Layl is a member of IEEE ASNE and the U.S. Naval Institute. Cdr. George D. Ellis USN (Ret.):was graduated from the United States Merchant Marine Academy Kings Point New York in 1951 with a Bachelor of Science Degree. He subsequently attended the United States Naval Postgraduate School Monterey California and the Department of Defense Computer Institute. He was employed as an engineer at the David W. Taylor Naval Ship Research and Development Center Carderock Maryland before entering the United States Navy on active duty in 1954. Mr. Ellis served at sea during the following thirteen years including two submarine command tours. He also served on the staffs of the office of Chief of Naval Operations Commander Submarine Force United States Pacific Fleet Commander-In-Chief Pacific and Commander-In-Chief United States Pacific Fleet. Cdr. Ellis is a veteran of the Vietnam conflict having served with the United States Naval Advisory Group. His decorations include the NAVY COMMENDATION MEDAL with Combat V VIETNAMESE HONOR MEDAL 1st Class VIETNAMESE MERITORIOUS UNIT CITATION NAVY EXPEDITIONARY MEDAL and the JOINT SERVICES COMMENDATION MEDAL. Cdr. Ellis is currently th

This paper describes the implementation of the Waterfront Corrective Action Program (WCAP) in the Pearl Harbor area utilizing the currently existing Navy organization and management structure in coordinating the following activities: —Pearl Harbor Naval Shipyard —Mobile Technical Unit One (MOTU-1) —Intermediate Maintenance Activities —TYPE Commander (COMNAVSURFGRU MIDPAC) —Contractor support A typical WCAP scenario is presented to indicate how each participant is most effectively employed. Future WCAP initiatives are also discussed with respect to institutionalization and improvement of electromagnetic interference (EMI) control in the Pacific Fleet.

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Toward development of a practical benchmark example for adaptive control: A panel discussion

Toward development of a practical benchmark example for adap...

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IEEE Conference on Decision and Control

作者： C. Richard Johnson Alan S. Foss Gene F. Franklin Richard V. Monopoli Gunter Stein The School of Electrical Engineering Cornell University Ithaca NY USA Department of Chemical Engineering University of California Berkeley CA USA Department of Electrical Engineering University of Stanford Stanford CA USA Department of Electrical and Computer Endineering University of Massachusetts Amherst MA USA Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge MA USA Honeywell Systems and Research Center Inc. Minneapolis MN USA

A session at the 1981 JACC in Charlottesville was devoted to the development of two test examples for adaptive control. The two candidate processes were derived by two panelist pairs from the aerospace (Franklin and Stein) and the chemical process (Foss and Monopoli) control domains. The purpose was to distill those process characteristics suggesting application of adaptive control and to provide practically meaningful test examples for comparison of various adaptive schemes. This paper presents the proposed benchmark models and encourages reader participation in the second "edition" of this panel discussion to be presented as session TP1 on Thursday, December 17, 1981 at the 20th CDC in San Diego.

关键词： Adaptive control Programmable control Chemical processes Pattern recognition Chemical engineering Mathematical model

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Raman scattering from in-plane lattice modes in low-stage graphite-alkali-metal compounds

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Physical Review B 1977年第8期16卷 3330-3330页

作者： P. C. Eklund G. Dresselhaus M. S. Dresselhaus J. E. Fischer Massachusetts Institute of Technology Cambridge MA 02139 United States University of Pennsylvania Philadelphia PA 19104 United States Department of Electrical Engineering and Computer Science Center for Materials Science and Engineering Francis Bitter National Magnet Laboratory Moore School of Electrical Engineering Laboratory for Research on the Structure of Matter

Low-temperature Raman scattering results for stage 1, 2, and 3 graphite-alkali-metal intercalation compounds are reported for in-plane modes using the Brewster-angle back-scattering geometry. Detailed full spectra are presented for stage 1, 2, and 3 compounds of graphite-Rb at 77 K. Particular attention is given to the structure which occurs at ≳560 cm−1 in the stage-1 compounds C8K, C8Rb, C8Cs. This structure is shown to have two components of different symmetries and is related to the zone-edge M1g phonon mode of pristine graphite.

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Abstracts

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Environmental Management 1977年第1期1卷 67-96页

作者： Frankenfeld, John W. Schulz, Wolfgang McMurty, George J. Petersen, Gary W. May, G. A. Hering, F. S. Schwartz, J. I. Heywood, J. B. Chigier, N. A. Grohse, E. W. Walker, J. D. Colwell, R. R. Petrakis, L. Pergament, H. S. Thorpe, R. D. Schoepf, Richard W. Krzyczkowski, Roman Henneman, Suzanne S. Hudson, Charles L. Putnam, Evelyn S. Thiesen, Donna J. Parks, G. A. McCarty, Perry L. Leckie, J. O. Schrumpf, Barry J. Simonson, G. H. Paine, D. P. Lawrence, R. D. Pyott, W. T. Leh, M. Elders, W. Combs, J. Caplen, T. Harrison, F. L. Wong, K. M. Heft., R. E. Charnell, Robert L. Lehmann, Edward J. Mallon, Lawrence G. Hatfield, Cecile Adams, Gerald H. Johanning, James Talvitie, Antti Noll, Kenneth E. Miller, Terry Smiarowski, Joseph F. Willis, Cleve E. Foster, John H. Schlesinger, Benjamin Daetz, Douglas Lear, Donald U. Smith, Mona F. Hundemann, Audrey S. Crockett, Pernell W. Werner, Kirk G. Carroll, Thomas E. Maase, David L. Genco, Joseph E. Ifeadi, Christopher N. Lowman, F. G. Christensen, S. W. Van Winkle, W. Mattice, J. S. Harrison, Elizabeth A. Barker, James C. Chesness, Jerry L. Smith, Ralph E. Shaheeen, Donald G. Raney, R. Keith Borton, T. Wezernak, C. T. Raney, R. K. Sherwani, Jabbor K. Moreau, David H. Eisenberg, Norman A. Lynch, Cornelius J. Breeding, Roger J. Johnson, J. D. Foster, K. E. Mouat, D. A. Clark, R. Hyden, John William Owen, Wilfred Bayfield, Neil G. Barrow, Graham C. Stolz, Stephanie B. Wienckowski, Louis A. Brown, Betram S. Keyfitz, Nathan Wilson, W. L. Newman, Peter W. G. Bammi, Deepak Bammi, Dalip Goddard, James E. Chisholm, Tony Walsh, Cliff Brennan, Geoffrey Thompson, K. S. Richardson, R. Jensen, Clayton E. Brown, Dail W. Mirabito, John A. Cowing, Thomas G. Binghamton, Suny Siehl, George H. Albrecht, O. W. Alexander, Ariel Barde, Jean -Philippe Darby, William P. McMichael, Francis Clay Dunlap, Robert W. Muckleston, Keith W. Frankenhoff, Charles A. Giulini, Lorenzo T. Wyatt, T. Black, Peter E. Keating, William Thomas Leonard, M. E. Fisher, E. L. Brunelle, M. F. Dickinson, J. E. Pethig, Rudiger Clapham Exxon Research & Engineering Co. Linden Government Research Lab Coast Guard Washington D.C. Department of Transportation Washington D.C. Office For Remote Sensing of Earth Resources. NASA Earth Resources Survey Program Pennsylvania State University Washington D.C. Department of the Navy Washington D.C. Cambridge. Dept. of Mechanical Engineering Massachusetts Inst. of Technology USA Huntsville. School of Graduate Studies and Research Alabama Univ. USA Dept. of Microbiology. Office of Naval Research Maryland Univ. Arlington Research and Development Co. Pittsburgh AeroChem Research Labs. Inc. Princeton Dept. of the Interior Office of Library Services. Bibliographic Series (Final) Washington D.C. Interplan Corp. Santa Barbara Urban Mass Transportation Adm. Washington D.C. Naval Underwater Systems Center Newport Calif. Mercury Project. National Science Found Stanford Univ Washington D.C. Div. of Advanced Environmental Research & Tech. USA Corvallis. NASA Earth Resources Survey Program Oregon State Univ. Washington D.C. Riverside. Inst. of Geophysics and Planetary Physics National Science Foundation California Univ. Washington D.C. Livermore Lawrence Livermore Lab. California Univ. USA Atlantic Oceanographic and Meteorological Labs. National Oceanic and Atmospheric Administration Miami National Technical Information Service Springfield Miami Univ. Coral Gables School of Law National Oceanic and Atmospheric Administration Rockville National Academy of Sciences Office of Sea Grant Washington D. C. School of Law National Oceanic and Atmospheric Administration Office of Sea Grant. Rockville Norman. Dept. of Civil Engineering and Environmental Science. Urban Mass Transportation Administration Oklahoma Univ. Washington D. C. Knoxville.Dept. of Civil Engineering. Federal Highway Administration Tennessee Univ. Washington D. C. Amherst.Water Resources Research Center. Office of Water Research and Technology Massachusetts Univ. Washington D. C. Calif. Dept. of Industria

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Social Robotics 1

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丛书名： Lecture Notes in computer science

1000年

作者： Haizhou Li Shuzhi Sam Ge Yan Wu Agnieszka Wykowska Hongsheng He Xiaorui Liu Dongyu Li Jairo Perez-Osorio

This book constitutes the refereed proceedings of the 13th International Conference on Social Robotics, ICSR 2021, held in Singapore, Singapore, in November 2021. The conference was held as a hybrid event.

ISBN: (数字)9783030905255

ISBN: (纸本)9783030905248

关键词： Artificial Intelligence computers and Education computer Imaging, Vision, Pattern Recognition and Graphics User Interfaces and Human computer Interaction computer Communication Networks Special Purpose and Application-Based Systems

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An Onboard UAV Multi-task System for Trajectory Prediction and State Estimation Employing Transformer- and Reservoir-based Networks

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ACM Journal on Autonomous Transportation Systems 1000年

作者： Nikolas Souli Panagiotis Katzanis Panayiotis Kardaras Yiannis Grigoriou Stavros Stavrinides Panayiotis Kolios Georgios Ellinas Electrical and Computer Engineering University of Cyprus Nicosia Cyprus International Hellenic University School of Science and Technology Thessaloniki Greece Electrical and Computer Engineering KIOS Research and Innovation Center of Excellence Aglantzia Cyprus Physics Department Democritus University of Thrace Komotini Greece Computer Science University of Cyprus Nicosia Cyprus

With the increasing technological advancements and deployment of unmanned aerial vehicles (UAVs) in different applications (e.g., delivery services, surveillance, critical infrastructure monitoring, military operations, and search-and-rescue operations), a robust, lightweight, and accurate system for UAV state identification and trajectory prediction is becoming a mandate. This work introduces an onboard real-time multi-task learning framework that combines Transformer neural networks and reservoir computing (RC) architectures to enhance outdoor UAV operations. The proposed system employs the Transformer-based architecture to capture the temporal dependencies in sequential data for long-term horizons, while RC-based networks are utilized to ensure robust and real-time performance. Specifically, custom multi-task models are implemented and fine-tuned to collect multi-modal sensor measurements, aiming to enhance the two-fold objective of simultaneous UAV state identification and trajectory prediction through shared feature learning. A dataset comprised of measurements collected from real-world UAV operations (in 3D space) under various conditions is employed to train and evaluate the proposed system. Further, a prototype onboard UAV system is implemented and tested in real-world field experiments. Extensive evaluations of the experimental results demonstrate that the onboard framework achieves accuracy close to the ground truth in both state identification and trajectory prediction, consequently showcasing its potential for practical applications.

关键词： Machine learning multi-task learning trajectory prediction state identification UAV applications Transformers Reservoir Computing.

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