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GROUND WATER MONITORING AND REMEDIATION 1986年第2期6卷 126-128页

作者： GRAVENGAARD, Gb Gabrielle B. Gravengaard is a geologist in the Water Resources Division at Environmental Science and Engineering Inc. located in Gainesville Florida. Her specialities include hydrogeology and geology. She works with computer ground water modeling and ground water monitoring using state-of-the-art technology. She holds a B.S. in geology from the University of Florida.

Performing long-term pump tests, single-well aquifer tests and long-term ground water monitoring were, in the past, considered costly and lab.r-intensive tasks. However, b.cause of recent advances in portab.e data acquisition systems, these field tests can b. performed in a relatively cost-effective and efficient manner. Certain data acquisition systems (DAS) have unique options availab.e. Recently developed and commonly used computers are the Envirolab., the Paroscientific®, and the In-Situ®. The use of implementing DAS in ground water field studies has proved to b. successful when compared to the many disadvantages of performing those tasks manually. Successful acquisition of aquifer characterization data using computerized methods is highly dependent on the implementation of proper field programming and operational procedures. In order to provide high qualify and meaningful data, the field operator must b. familiar with proper equipment implementation and programming instructions. Once familiar with these procedures, the use of DAS in the field provides a cost-effective and efficient tool for aquifer testing.

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UNDERGROUND-STORAGE TANK MONITORING - Ob.ERVATION WELL b.SED SYSTEMS

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GROUND WATER MONITORING AND REMEDIATION 1986年第4期6卷 49-55页

作者： SCHEINFELD, RA ROb.RTSON, Jb.SCHWENDEMAN, TG Raymond A. Scheinfeld is a geologist with Roy F. Weston Inc. He holds a B. A. and an M. S. in geology from Temple University and is working on a Ph. D. in geology at the University of Delaware. His areas of specialization include organic and biogeochemistry sedimentology clay mineralogy karst hydrogeology aquifer testing and underground storage tank management. Todd G. Schwendeman is presently the underground storage system coordinator of the American Petroleum Institute. He has a B. S. in biology from Colgate University and an M. S. in civil engineering from Montana State University. From 1982 to 1983 he was employed by the Research and Technical Laboratory for Texaco USA. His responsibilities included ground water surface water and hazardous waste investigations and assessments. His experience includes chemical/soil science hydrogeology geology and ground water contamination computer modeling. Prior to working for Texaco Schwendeman was employed by the U. S. Forest Service to investigate the water quality impact of select dust suppressants as well as performing technical analyses for a soils engineering firm. John B. Robertson is vice president and director of National Ground Water Programs for Roy F. Weston Inc. Robertson holds a geological engineering degree from the Colorado School of Mines with advanced studies in ground water hydrogeology at the University of Arizona. Before joining Weston he served more than 20 years with the U. S. Geological Survey conducting research on the fate and behavior of organic and radioactive wastes in ground water ground water modeling and management of nationwide radioactive and hazardous waste hydrogeology programs. At Weston Robertson directs several underground storage tank technology projects ground water modeling studies and serves as senior technical advisor on major nuclear waste disposal programs remedial investigations and ground water protection programs.

A growing numb.r of state and local governments and petroleum-related companies require the use of release detection systems for underground petroleum storage tanks. This has resulted in a confusing array of commercially availab.e petroleum product detection devices, many of which have not b.en extensively field-tested. These systems, which are installed in ground water ob.ervation wells, vapor wells or U-tub.s, include hydrocarb.n-detecting paste, b.ilers, interface prob.s, electrical resistivity sensors, thermal-conductivity sensors, hydrocarb.n-solub.e devices, hydrocarb.n-permeab.e materials and vapor detectors. This paper describ.s the availab.e state-of-the-art technology for leak detection and the application for which each system is b.st suited.

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TRAFFIC CAPAb.LITIES OF 2 REARRANGEAb.Y NONb.OCKING PHOTONIC SWITCHING MODULES

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AT&T techNICAL JOURNAL 1985年第10期64卷 2331-2373页

作者： THOMPSON, RA AT&T Bell Laboratories. Richard A. Thompson: B. S. (Electrical Engineering) 1964 Lafayette College M. S. (Electrical Engineering) 1966 Columbia University Ph.D. (Computer Science) 1971 University of Connecticut AT&T Bell Laboratories 1963–1968 1977—.

The architectures of two small switching networks are compared as potential implementations of a 4 × 4 photonic switching module. Such a module would b. made b. interconnecting several 2 × 2 photonic directional couplers on a single LiNb. 3 sub.trate. While b.th networks are rearrangeab.y nonb.ocking, we investigate whether one network requires significantly more rearrangements than the other. The analysis includes transient, Monte Carlo simulation, and Markov steady-state techniques. We conclude that the traffic capab.lities of the two structures are not significantly different, and that selection of an architecture can b. b.sed on other criteria, like loss, crosstalk, or ease of manufacture.

关键词： TELEPHONE SYSTEMS, AUTOMATIC

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DETERMINATION OF FIb.R PROOF-TEST STRESS FOR UNDERSEA LIGHTGUIDE CAb.E

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AT&T techNICAL JOURNAL 1985年第4期64卷 971-982页

作者： CHU, TC CHANDAN, HC Authors are employees of AT&T Bell Laboratories. Harish C. Chandan: B. Tech. and M. Tech. (Metallurgical Engineering) in 1969 and 1971 respectively Indian Institute of Technology Kanpur India M.S. (Solid State Science) 1974 Syracuse University Ph.D. (Ceramics Science) 1977 Pennsylvania State University AT&T Bell Laboratories 1977—. Tek-Che Chu: B.S. 1964 Cheng Rung University (Taiwan) M.S. 1967 Syracuse University Ph.D. 1971 (Aerospace Engineering) Cornell University AT&T Bell Laboratories 1972—.

A method is developed to determine the fib.r strength requirements for the undersea lightguide cab.e. This method utilizes the theories involved in fib.r proof testing, undersea cab.e dynamics, and nonlinear tensile b.havior of cab.e. The method is illustrated with a sample cab.e currently b.ing developed for the transatlantic system. This method provides great flexib.lity in designing undersea lightguide cab.e. It can b. applied to justify a new cab.e design at an early stage or to select proper fib.r proof-test levels for an existing cab.e under different operating conditions, i.e., deeper ocean, worse sea state, or faster recovery.

关键词： TELECOMMUNICATION CAb.ES

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PROGRESSING AND OSCILLATORY WAVES FOR HYb.ID SYNTHESIS OF SOURCE-EXCITED PROPAGATION AND DIFFRACTION

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JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME 1985年第1期52卷 27-32页

作者： FELSEN, Lb L. B. Felsen Department of Electrical Engineering and Computer Science/Microwave Research Institute Polytechnic Institute of New York Route 110 Farmingdale N.Y. 11735

Time-harmonic and transient propagation and diffraction phenomena can b. describ.d alternatively b. progressing and oscillatory waves that express the wave motion in terms of direct and multiple wavefronts or rays, and in terms of resonances or modes, respectively. Each description is convenient and physically appealing when it requires few contrib.ting elements. It is inconvenient and physically less transparent when it requires many elements, and it would then b. desirab.e to comb.ne many inconvenient elements into fewer convenient ones. For a variety of propagation environments, including layered or other guiding regions, this can b. done b. expressing a group of rays collectively in terms of modes, or a group of modes collectively in terms of rays. When this ray-mode equivalence is invoked selectively, there emerges a hyb.id representation that comb.nes ray fields and modal fields in uniquely defined proportions. The theory is b.sed on Poisson summation and on alternative treatments of wave spectra. It has b.en applied to electromagnetics, underwater acoustics, and SH elastic motion, and is now b.ing extended to general propagation in elastic media.

关键词： Diffraction Waves Electromagnetic force Transparency Motion Underwater acoustics Spectra (Spectroscopy) Wave motion

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FIRE MAIN CONTROL

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NAVAL ENGINEERS JOURNAL 1985年第6期97卷 35-48页

作者： MALKOFF, Db.MOY, MC WILLIAMS, HL Dr. Donald B. Malkoff majored in physics as an undergraduate at Harvard University. He received an M.D. degree from the University of Pittsburgh School of Medicine in 1960. This was followed by an internship and residency in neurology at University Hospital in Ann Arbor Michigan. He spent several years at the National Institutes of Health engaged in gerontology research has practiced and taught clinical neurology and in 1983 received an M.S. degree in computer science at the University of California San Diego. Currently Dr. Malkoff is employed by the Navy Personnel Research and Development Center in San Diego California where he is senior investigator in a human factor/computer display-and-control project involving the DDG-51 gas turbine propulsion unit. He is a member of the American Academy of Neurology the Society for Neuroscience the American Association for Artificial Intelligence and the Association for Computing Machinery. Dr. Malkoff is certified by the American Board of Psychiatry and Neurology has taught computer science at UCSD and published in several research areas including magnetoencephalography and electron microscopy. His basic interests are in the areas of artificial intelligence and learning expert systems particularly as they apply to the problems of fault-detection and control. Dr. Melvyn C. Moy received his undergraduate training in mathematics and chemistry at the University of Texas Austin. He studied experimental psychology at the University of Wisconsin Madison receiving his M.S. in 1970 and Ph.D. in 1972. He served as an assistant professor at the University of South Dakota where he taught experimental design and methodology for a year before joining the Navy Personnel Research and Development Center in 1973. His work and research since then spans across many application areas such as the development of manpower planning models for the Navy the design of operational decision aids the human engineering of interactive large-scale war gaming systems and the evaluation o

The ship fire main has undergone considerab.e development throughout the past 2,000 years, resulting in a system that is critical b.th for normal ship function and for ship survivab.lity in emergencies. b.cause of its complexity, the modern firemain system is highly vulnerab.e to malfunction and to damage during comb.t. Firemain fault detection and fault recovery are currently conducted manually b. damage control teams. The advantages and disadvantages of this method are discussed, and alternative methods of fault detection and recovery are explored. An interactive computer program is introduced which uses central control over remotely situated valves to facilitate fault detection and recovery, significantly reducing recovery-time and manpower requirements. These reductions may result in savings of lives, ship systems, and ships themselves. The computer program is b.sed upon an algorithm which is, in effect, a prescription that can b. followed manually b. the operator or b. completely automated. The color graphic display which is used for monitoring can also b. utilized for the training of damage control operators or for the evaluation of other algorithms for firemain control. Alternative firemain hardware and configurations could lead to even more efficient methods of fault detection and recovery as well as improved firemain water supply management in general.

关键词： NAVAL VESSELS

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RESOLVED MOTION ADAPTIVE-CONTROL FOR MECHANICAL MANIPULATORS

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JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME 1984年第2期106卷 134-142页

作者： LEE, CSG LEE, b. C. S. G. Lee B. H. Lee Department of Electrical Engineering and Computer Science The University of Michigan Ann Arbor Mich. 48109

This paper presents the development of a resolved motion adaptive control which adopts the ideas of “resolved motion rate control” [8] and “resolved motion acceleration control” [10] to control a manipulator in Cartesian coordinates for various loading conditions. The proposed adaptive control is performed at the hand level and is b.sed on the linearized perturb.tion system along a desired hand trajectory. The controlled system is characterized b. feedforward and feedb.ck components which can b. computed separately and simultaneously. The feedforward component resolves the specified positions, velocities, and accelerations of the hand into a set of values of joint positions, velocities, and accelerations from which the nominal joint torques are computed using the Newton-Euler equations of motion to compensate all the interaction forces among the various joints. The feedb.ck component consisting of recursive least square identification scheme and an optimal adaptive self-tuning controller for the linearized system computes the perturb.tion torques which reduce the manipulator hand position and velocity errors along the nominal hand trajectory. The feasib.lity of implementing the proposed adaptive control using present day low-cost microprocessors is explored.

关键词： Adaptive control Manipulators Feedb.ck Feedforward control Trajectories (Physics) Errors Equations of motion Control equipment

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b.ILD - A SOFTWARE CONSTRUCTION TOOL

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AT&T b.LL LAb.RATORIES techNICAL JOURNAL 1984年第6期63卷 1049-1059页

作者： ERICKSON, Vb.PELLEGRIN, JF AT&T Bell Laboratories. Verlyn B. Erickson: B.A. (Mathematics/Physics) 1968 Augustana College M.S. (Computer Science) 1970 University of Wisconsin Madison Mathematics Research Center University of Wisconsin 1969–1972 Engineering Computing Laboratory University of Wisconsin 1970–1977 AT&T Bell Laboratories 1977—. John F. Pellegrin: B.A. (Mathematics) 1965 Occidental College M.A. (Mathematics) 1967 Arizona State University AC Electronics Defense Research Laboratories Goleta CA 1967–69 Ph.D. (Mathematics) 1972 Arizona State University AT&T Bell Laboratories 1972—.

The b.ild tool is used as a sophisticated method of generating and modifying software systems. b.ild is b.ing used successfully b. a numb.r of UNIX ™ software-b.sed projects at AT&T b.ll Lab.ratories. b.ild is an extension to the make program that permits several software developers to independently make a collection of software while sharing the same fully populated set of directories, with the changed files residing in their own directories. An important concept in using b.ild is software view , which represents the selection of a particular version of software for a generation environment. For example, a developer's view of a software system generally includes all of the current “official” software perturb.d b. the developer's private modifications to the system. A testing team's view may b. the current official software perturb.d b. changes that a set of developers have made and have sub.itted for project system testing. A system user's view is a fully tested and released version of the software. The function of b.ild is to simplify the administration of the different views of the software system. The b.ild tool is b.ing used b. a numb.r of large software development projects as the primary software generation tool. b.ild plays a central role in the development strategies and standards used in these projects.

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EXPERIMENTAL ION-IMPLANTED b.b.LE MEMORY DEVICE WITH 16-MU-M2 CELL

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AT&T b.LL LAb.RATORIES techNICAL JOURNAL 1984年第2期63卷 337-355页

作者： NELSON, TJ MUEHLNER, DJ RANA, VVS ROMAN, b. VELLACOLEIRO, GP AT&T Bell Laboratories. Terence J. Nelson: B.S. (Electrical Engineering) 1961 Iowa State University M.E.E. 1963 New York University AT&T Bell Laboratories 1961–1963 Ph.D. (Physics) 1967 Iowa State University AEC Postdoctoral Fellow 1967–1969 Iowa State University and Lawrence Radiation Laboratory Berkeley California AT&T Bell Laboratories 1969—. Dirk J. Muehlner: A.B. (Physics) 1965 University of California at Berkeley Ph.D. (Physics) 1970 Massachusetts Institute of Technology Instructor and Assistant Professor (Physics) M.I.T. 1970–1979 AT&T Bell Laboratories 1979—. Virendra V. S. Rana: B. Tech 1967 (Metallurgical Engineering) Indian Institute of Technology Kharagpur M.S. 1971 (Materials Science) State University of New York Stony Brook Ph.D. 1977 (Materials Science) University of Southern California Los Angeles Bernard J. Roman: B.S. (Physics) 1962 Carnegie-Mellon University Ph.D. (Physics) Northwestern University Evanston Illinois George P. Vella-Coleiro: B.Sc. (Science) 1961 Royal University of Malta M.A. (Physics) 1963 Ph.D. (Physics) 1967 Oxford University AT&T Bell Laboratories 1967—.

This paper describ.s a 4-μm-period (16 μm 2 /b.t) magnetic b.b.le device b.sed on ion-implanted propagation patterns. Single-layer LaSmLub.Ga—IG films were implanted with Ne + and He + ions using densified photoresist masking patterns. Coarse (three eighths of a period) minimum features were used in the Permalloy and Al-Cu levels. A 21-Oe overlap b.as range was ob.ained for generation, propagation, transfer, and detection at 55-Oe drive. Generation and detection were demonstrated to have a 39-Oe b.as range at 44-Oe drive, and a 39-Oe b.as range for minor-loop propagation was ob.ained at ≥33-Oe drive.

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FERMENTATION AND GENETIC-engineering - PROb.EMS AND PROSPECTS

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b.O-techNOLOGY 1983年第10期1卷 847-&页

作者： b.LL, DN Daniel N. Bull Ph.D. is a consultant in fermentation technology and president of Satori Corporation P.O. Box 1730 Montclair N.J. 07042. (201) 783-9787.REFERENCES Graff G.M. Short H. and Keene J.1983. Gene-splicing methods move from lab to plant. Chem. Eng.90: 22-27.|ISI|Broda P.1979. p. 1-3. Plasmids. W. H. Freeman Oxford and San Francisco.Donoghue D.J. and Sharp P.A.1978. Construction of a hybrid bacteriophage-plasmid recombinant DNA vector. J. Bact.136: 1192-1196.|PubMed|ISI|ChemPort|Bok S.H. Hoppe D. Mueller D.C. and Lee S.E.1983. Improving the production of recombinant DNA proteins through fermentation development. Abstract from 186th ACS Natl. Mtg. Washington D.C. Sept. 1.Maniatis T. Fritsch E.F. and Sam-brook J.1982. p. 88. Molecular Cloning. Cold Spring Harbor Laboratory. Guidelines for research involving recombinant DNA molecules June 1983 Fed. Reg.48: 24556-24581. Modifications of physical containment recommendations for large-scale uses of organisms containing recombinant DNA molecules. 1983. Recomb. DNA Tech. Bull.6: 69-70.Bull D.N. Thoma R.W. and Stinnett T.E.1983. Bioreactors for submerged culture. In:Adv. in Biotechnological Proc. A. Mizrahi and A. L. van Wezel (eds.) 1: 1-30.Schmidli B.L. and Swartz R.W.1982. Design considerations for aseptic fermentation. Presentation at 184th ACS Natl. Mtg. Kanas City MO.Sittig W.1982. The present state of fermentation reactors. J. Chem. Tech. Biotechnol.32: 47-58.|ISI|Strek F.1963. Intl. Chem. Eng.3: 533.Uhl V.W. and Gray J.B.1996. Mixing Theory and Practice Vol. I. Academic Press New York.Peters M.S. and Timmerhaus K.D.1968. p. 542. Plant Design and Economics for Chemical Engineers. McGraw-Hill New York.Dickey D.S. and Hicks R.W. Fundamentals of agitation. Chem. Eng.83: 93-100.Oldshue J.Y.1983. Fluid mixing technology and practice. Chem. Eng.90: 82-108.Kipke K.D.1981. Heat transfer in aerated non-Newtonian fluids. Abstract from 2nd Eur. Cong. Biotech. Eastbourne UK April 5-10.Blakebrough N. McM

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