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Erratum: ‘‘Interaction of adjacent bursts in the wall region’’ [Phys. Fluids 6, 954 (1994)]

Physics of Fluids 1997年第1期9卷 247-247页

作者： B. D. Coller P. Holmes John Lumley Control and Dynamical Systems California Institute of Technology 104‐44 Pasadena California 91125 Department of Mechanical and Aerospace Engineering and Program in Applied and Computational Mathematics Princeton University Princeton New Jersey 08544 Sibley School of Mechanical and Aerospace Engineering Cornell University Ithaca New York 14853

B. D. Coller, P. Holmes, John Lumley; Erratum: ‘‘Interaction of adjacent bursts in the wall region’’ [Phys. Fluids 6, 954 (1994)], Physics of Fluids, Volume 9,

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Solitary wave formation and dynamics on falling films

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Advances in applied Mechanics 1996年第C期32卷 1-56页

作者： Chang, Hsueh-Chia Demekhin, Eugeny A. Department of Chemical Engineering University of Notre Dame South Bend Indiana Department of Applied Mathematics Krasnodar Polytechnical Institute Krasnodar The Russian Republic

This chapter provides an overview of solitary wave formation and dynamics on falling films. The most dramatic solitary interfacial waves exist on a thin film falling down a plane under the force of gravity. The solitary waves, with their large amplitudes and broad Fourier content, cannot be described by weakly nonlinear theories with only a few Fourier modes. Their construction and dynamics can be discerned only with strongly (global) nonlinear techniques in dynamical systems theory. In this respect, the falling film is arguably the best hydrodynamics example of how modern dynamical systems theory, especially global theories associated with homoclinic bifurcations, can be applied to understand its complex spatio-temporal dynamics. Although the chaotic dynamics of solitary pulses occur at relatively low Reynolds numbers due to the presence of destabilizing inertia force at scales different from the stabilizing capillary force, the dynamics share many of the characteristics of high Reynolds number shear flow turbulence. Subharmonic secondary instabilities, broadband excitation, synchronization, and coherent structure interactions seem to occur in all these open flow systems. With its low Reynolds number, the falling film instability is relatively easy to study numerically, and its solitary waves are simpler to construct.

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Large-scale statistics of the Kuramoto-Sivashinsky equation: A wavelet-based approach

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Physical Review E 1996年第1期54卷 224-224页

作者： J. Elezgaray G. Berkooz P. Holmes Program in Applied and Computational Mathematics and Department of Mechanical and Aerospace Engineering Princeton University New Jersey 08544

We show that the statistical properties of the large scales of the Kuramoto-Sivashinsky equation in the extended system limit can be understood in terms of the dynamical behavior of the same equation in a small finite domain. Our method relies on the description of the solutions of this equation in terms of wavelets, and allows us to model the energy transfer between small and large scales. We show that the effective equation obtained in this way can be consistently approximated by a forced Burgers equation only for scales far from the cutoff between small and large wavelengths. © 1996 The American Physical Society.

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Application of Neural Networks in Identification of Faults in Bioprocesses

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IFAC Proceedings Volumes 1996年第1期29卷 6738-6743页

作者： M.N. Karim A.J. Morris P.J. Notts E.B. Martin Department of Agricultural and Chemical Engineering Colorado State University Fort Collins Colorado 80523 USA Department of Chemical and Process Engineering Department of Applied Mathematics University of Newcastle Newcastle upon Tyne NE1 7RU UK

Biological systems go through different phases or biological states during the cultivation process. It is important to identify and control the process at these phases as secondary metabolite productions arc dependent upon different phases of fermentation. Saccharomyces cerevisiae cultivation is studied and a fuzzy neural network is used to determine various biological phases and faults that can occur in this process.

关键词： Fuzzy modeling neural network models

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Erratum: The effect of modeled drag reduction on the Wall Region

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Theoretical and Computational Fluid Dynamics 1996年第6期8卷 449-450页

作者： Nadine Aubry John Lumley Philip Holmes Sibley School of Mechanical and Aerospace Engineering Cornell University Ithaca USA Levinch Institute and Department of Mechanical Engineering City College of the City University of New York New York USA Department of Mechanical and Aerospace Engineering Princeton University Princeton USA Program in Applied and Computational Mathematics Princeton University Princeton USA

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Affordability, logistics R&D and fleet systems

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NAVAL ENGINEERS JOURNAL 1996年第3期108卷 199-213页

作者： Schulte, DP Skolnick, A He has supported the development and operation of several naval systems including advanced component selection for Trident II fire control and navigation systems. He served as branch manager of the Surface Ship ASW Combat System Branch which acted as the acquisition engineering agent for the AN/SQQ-89 Surface Ship Anti-Submarine Warfare Weapon System. He was then selected to manage the Module Engineering Department which provided engineering support to numerous naval systems including the AN/BSY-1 Submarine Combat System and the Trident II fire control and navigation system. He then served as the deputy program manager for NAVSEA Progressive Maintenance (2M/ATE). He holds a B.S. degree in Electrical Engineering from Purdue University and currently is pursuing a Maste's degree in Public Environmental Affairs at Indiana University—Purdue University Indianapolis. He served at Applied Physics Laboratory/The Johns Hopkins University in missile development then aboard USS Boston (CAG-1) and played leading roles in several weapon system developments (Regulus Terrier Tartar Talos) inertial navigation (Polaris) deep submergence (DSRV) and advanced ship designs (SES). He later was director Combat System Integration Naval Sea Systems Command and head Combat Projects Naval Ship Engineering Center. He led the Navy's High Energy Lasers and Directed Energy Weapons development efforts. He was vice president advanced technology at Operations Research Inc. and vice president maritime engineering at Defense Group Inc. before starting SSC in 1991. Dr. Skolnick holds a B.S. degree in Mathematics and Economics Queens College an M.A. degree in Mathematics and Philosophy Columbia University an M.S. degree in Electrical/Aeronautical Engineering U.S. Naval Postgraduate School and a Ph.D. in Electrical Engineering and Applied Mathematics from Polytechnic University in New York. He is the author of many published papers on engineering design issues source selection procedures and large-scale complex technology problems

The Fleet continues to require high performance systems that can operate with dependability in the seas' unforgiving environments and under hostile action. Those demands are not new. What has changed is the urgent priority formerly assigned to national defense issues. The arguments for continued superpower military strength are now roiled in politics along with unsettled budgets and uncertain force level projections. Current expectations revolve about indefinite fiscal and operational issues (difficult funding constraints and broadband threats). In the actual event of ''doing more with less,'' a practical response is to apply the creative power available from sound engineering judgement and the crucible of experience to the immediate needs of the Fleet. The attempt to shorten the path between advanced development effort and Fleet use has been tried occasionally in the past, often, without exemplary results. The Sustainable Hardware and Affordable Readiness Practices (SHARP) program, is a generic R&D effort under OpNav sponsorship that has been working steadily on sensible solutions to product engineering problems. Armed today with fast-time, large-scale computation abilities and modern tools for technical problem solving coupled with specialized engineering knowledge, it has been refreshed and is underway satisfying existing Fleet needs. The relationship between fully responsive engineering services and current operational needs is always demanding. The connection between advanced engineering development (6.3 category funds) and immediate Fleet usage brings added complexity and challenge, both technical and organizational. Illustrative examples of affordable engineering solutions to ''retain, revise, replace or retire'' questions are presented within the context of both Fleet realities and budgetary limitations. The discussion covers legacy system support, civil/military considerations and Fleet maintenance issues. It describes the substantial and critical payoffs i

关键词： Warships

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FARADAY RESONANCE IN A 2-LIQUID LAYER SYSTEM

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FLUID DYNAMICS RESEARCH 1995年第3期15卷 145-165页

作者： GENERALIS, SC NAGATA, M Current address: Department of Chemical Engineering & Applied Chemistry Aston University Birmingham B4 7ET UK School of Mathematics and Statistics The University of Birmingham Edgbaston Birmingham B15 2TT UK

We consider resonating wave interactions in a vertically oscillating rectangular box, which carries two liquids of different densities. The natural frequencies omega(1) and omega(2) of the system are assumed to satisfy the resonant condition 2 omega(1) = omega(2) = Omega, where Omega is the frequency of the vertical vibration of the box. To study this interaction we have obtained amplitude equations which approximate the behaviour of the system in the region in parameter space where the 2 omega(1)/Omega = 1 and omega(2)/Omega = 1 Mathieu instability regions cross. Our system can be transformed to that of Gu and Sethna (1987), who analysed the problem of Faraday resonance in the case of a single liquid in a rectangular container. We complement their results to quadratic order an extend them by including cubic order interactions. In particular, the results of our study show the importance of cubic order terms for second harmonic resonance, especially when dissipation is small. We choose a certain range in parameter space in order to make comparisons with previous results (Gu and Sethna 1987) and present the sequences of bifurcations and regions of chaotic behaviour for this interaction.

关键词： Surface waves

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Nonlinear electrostatic waves in collisionless plasmas

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Physical Review E 1995年第3期52卷 3015-3015页

作者： Mark Buchanan J. Dorning Engineering Physics Program and Department of Applied Mathematics University of Virginia Charlottesville Virginia 22903

We report results concerning small amplitude Bernstein-Greene-Kruskal (BGK) waves, which are exact undamped traveling wave solutions of the nonlinear Vlasov-Poisson-Ampère equations for collisionless plasmas. Building upon previous work, we first develop a simple but powerful formalism that facilitates a methodical investigation of the types and properties of small amplitude BGK plasma waves that can exist near a given collisionless plasma equilibrium. Using this formalism, we then show that any physically relevant spatially uniform plasma equilibrium supports nonlinear spatially periodic BGK waves that are described by the Vlasov dispersion relation in the small amplitude limit. We demonstrate also that these equilibria are characterized by a discrete set of critical velocities vc(i), i=1,2,..., at which BGK solitary waves of vanishingly small amplitude can propagate in the plasma. The existence of these exact nonlinear spatially periodic and solitary wave solutions illustrates the fundamental incompleteness of the linear Vlasov-Landau theory of plasma waves since, by virtue of particle trapping, these nonlinear waves neither damp nor grow even when their amplitude is arbitrarily small.

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Abstracts of papers presented at the 14th conference of the Weed Science Society of Israel Abstracts of papers presented at the international conference on controlled atmosphere and fumigation (CAF) in stored products Abstracts of papers presented at the joint international conference of FAOPMA — CEPA on pest control in the 21st century Abstracts of papers presented at the 2nd international Agro-Ecology Symposium on integrated pest management: from the drawing board to the market

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Phytoparasitica 1996年第3期24卷 199-265页

作者： E. Yogev M. Berson Y. Benyamini Y. Sheinboim T. Lev-Ran A. Bahat Y. Barkai Y. Gatti M. Zaidan O. Barazani Y. Boshvize S. Graph U. Luchinsky T. Blumenfeld Y. Kleifeld G. Herzlinger H. Bucsbaum S. Golan T. Chilf R. Aly Y. Ohali A. Ovadia Y. Chachlon H. Yovel Y. Tesler G. Colodney A. Nir S. Zarka A. Tal B. Rubin T. Yaacoby Y. Alon Y. Kedar Orit Ben-Zvi Assaraf O. Shainberg H. D. Rabinowitch E. Tel-Or Y. Goldwasser D. M. Joel D. Plakhine V. Portnoy G. Tzuri N. Katzir Dalia Losner-Goshen A. M. Mayer R. Jacobsohn Z. Tanaami H. Eisenberg Ziva Amsellem Z. Kernyi L. Hornok J. Gressel Adiva Shomer-Ilan Ela Nir Daphna Michaeli V. Kampel A. Warshawsky M. Yogev M. Negbi J. Hershenhorn Y. Lavan T. Hilf M. Horowitz M. Cohen I. Hirsch A. Veneziani S. T. Conyers C. H. Bell Ana C. Sá-Fischer C. S. Adler Ch. Reichmuth P. W. Flinn D. W. Hagstrum G. N. Mbata R. G. Winks Elisabeth A. Hyne M. Q. Chaudhry A. D. MacNicoll N. R. Price M. Schöller J. -F. Dugast R. Plarre S. Navarro E. J. Donahaye R. Diaz Miriam Rindner A. Azrieli P. Trematerra F. Fontana M. Mancini Ailsa D. Hocking Marta H. Taniwaki J. Lacey A. Hamer N. Magan N. Paster F. M. Caliboso D. G. Alvindia G. C. Sabio M. T. dela Cruz Okky Setyawati Dharmaputra A. S. R. Putri M. Sidik Eleni Papademetriou A. Varnava C. Mouskos M. A. Malek B. Parveen K. A. Dzisi W. O. Ellis Ana Maria Estevez Ljubica Galletti T. Fichet E. Oteiza L. A. Lizana M. X. Gonzalez B. Yakobson Y. Slavezky H. Ephrati El-H. Bartaly R. K. Kashyap M. Gupta W. L. Kashyap B. S. Dahiya A. K. Dash J. R. Rangaswamy R. D. Shroff D. S. Jayas W. E. Muir N. D. G. White L Gaye Weller J. E. van S. Graver Wu-Kang Peng M. Bengston E. Alip C. Reed J. G. Leesch G. F. Knapp G. F. Russell L. B. Llewellin Ch. Ulrichs H. J. Banks P. C. Annis R. Allanson R. Tauscher K. Westphal S. Mohan M. Gopalan P. C. Sumdarababu V. V. Sree Narayanan Sabine Prozell G. Ziegleder B. Schartmann R. Matissek J. Kraus D. Gerard S. Rogg W. Raemann R. F. Ryan Ya-Nan Wang R. T. Noyes P. Kenkel J. T. Criswell G. W. Cuperus C. J. Waterford C. P. Whittle L. Be Luxembourg Chemicals and Agriculture Ltd. Tel Aviv Israel Agrochemicals Dept. Milchan Bros. Ltd. Ramat Gan Israel Extension Service Ministry of Agriculture Zefat Mevo Hamma Ramat HaGolan Israel Dept. of Weed Science ARO Newe Ya’ar Research Center Haifa Israel Agrochemicals Department Milchan Bros. Ltd. Ramat Gan Israel Tarsis-Agrichem Tel Aviv Israel Weed Control Co. Ltd. Bet Dagan Israel Dept. of Field Crops Vegetables and Genetics The Hebrew University of Jerusalem Faculty of Agriculture Rehovot Israel Plant Protection and Inspection Services Ministry of Agriculture Bet Dagan 50250 Agan Chemical Manufacturers Ltd. Ashdod Israel Dept. of Field Crops Vegetables and Genetics Rehovot Dept. of Agricultural Botany The Hebrew University of Jerusalem Faculty of Agriculture Rehovot Israel Dept. of Weed Science ARO Newe Ya’ar Research Center Haifa Dept. of Botany The Hebrew University of Jerusalem Jerusalem Israel Dept. of Vegetable Crops ARO The Volcani Center Bet Dagan Israel Dept. of Plant Genetics Weizmann Institute of Science Rehovot Israel Inst. for Plant Science Agricultural Biotechnology Center Gödöllö Hungary Dept. of Botany Tel-Aviv University Tel Aviv Israel Dept. of Plant Genetics The Weizmann Institute of Science Rehovot Israel Dept. of Organic Chemistry The Weizmann Institute of Science Rehovot Israel Dept. of Ornamental Horticulture ARO The Volcani Center Bet Dagan Israel Weed Control Co. Ltd. Bet Dagan Chem-Nir Ltd. Kefar Shemaryahu Tiveon-Chem Co. Haifa Israel Central Science Laboratory Ministry of Agriculture Fisheries and Food Slough Berks UK Federal Biological Research Centre for Agriculture and Forestry Inst. for Stored Product Protection Berlin Germany USDA-ARS Grain Marketing and Production Research Center Manhattan USA School of Biological Sciences Abia State University Uturu Nigeria CSIRO Division of Entomology SCMC Nambour CSIRO Division of Entomology Canberra Australia DowElanco Europe Letcombe Laboratory L

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Differential Flow Induced chemical Instability on a Rotating Disk

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Physical Review Letters 1995年第23期75卷 4318-4318页

作者： Y. Khazan L. M. Pismen Programme in Applied Mathematics Technion-Israel Institute of Technology 32000 Haifa Israel Department of Chemical Engineering Technion-Israel Institute of Technology 32000 Haifa Israel Minerva Center for Nonlinear Physics of Complex Systems Technion-Israel Institute of Technology 32000 Haifa Israel

Conditions of differential flow induced chemical instability are obtained for a heterogeneous reaction on a rotating disk. Since the surface of a rotating disk is equiaccessible to diffusional transport, this is a unique arrangement where a homogeneous state does indeed exist in the presence of flow, and the symmetry breaking can be observed in an unequivocal way. Explicit instability limits are established for an autocatalytic two-component system near a saddle-node bifurcation point, where the instability occurs on a long scale along the streamlines.

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