Second-order conditions for steady-state optimality and nonoptimality in a periodic control problem are presented. The main result is a generalization of the - test, a second-order sufficient condition for improved pe...
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Second-order conditions for steady-state optimality and nonoptimality in a periodic control problem are presented. The main result is a generalization of the - test, a second-order sufficient condition for improved performance by periodic control. Earlier results are generalized in two distinct ways: 1) the control constraint set is only assumed convex (and hence possibly nonopen) thus allowing the optimal steady-state control to be an element of the control constraint set boundary and 2) auxiliary normality conditions are eliminated.
The essence of human problem solving behaviour is the jump to a possible solution. The character of the jump is shown to be: inductive, implicit and tacit. That is the main notion stressed in this paper. It is embedde...
The essence of human problem solving behaviour is the jump to a possible solution. The character of the jump is shown to be: inductive, implicit and tacit. That is the main notion stressed in this paper. It is embedded in a proposed global problem solving model, the core of which equals the empirical cycle of science. Several details of the model, such as observation, coding and attention, are worked out further.
作者：
COONEY, JMJohn M. Cooney
Ph.D. was a manager in the Large Scale Chromatography Unit of Pharmacia Fine Chemicals AB Uppsala Sweden. He is a consultant with W.P.C. Associates and will be joining Fermentech Ltd. Storey's Gate Westminster London SW1P 3AY U.K.REFERENCES Sumner J.B.1951. Urcase p. 873-892. In:The Enzymes Part 2. J.B. Sumner and K. Myrbä ck (eds.). Academic Press
New York.Martin A.J.P. and Synge R.L.M.1945. Analytical chemistry of the proteins p. 1-83. InAdvances in Protein Chemistry Vol. 2. M.L. Anson and J.T. Edsall (eds.). Academic Press New York.Fankuchen I.1945. X-ray diffraction and protein structure p. 387-405. InAdvances in Protein Chemistry Vol. 2. M.L. Anson and J.T. Edsall (eds.). Academic Press New York.Tristram G.R.1949. Amino acid composition of purified proteins p. 83-153. InAdvances in Protein Chemistry Vol. 5. M.L. Anson J.T. Edsall and K. Bailey (eds.). Academic Press New York.|ISI|Sanger F.1952. The arrangement of amino acids in proteins p. 1-67. InAdvances in Protein Chemistry Vol. 7. M.L. Anson K. Bailey and J.T. Edsall (eds.). Academic Press New York.Tristram G.R.1953. The amino acid composition of proteins p. 181-233. InThe Proteins Vol. 1A. H. Neurath and K. Bailey (eds.). Academic Press New York.Low B.W.1953. The structure and configuration of amino acids peptides and proteins p. 235-391. InThe Proteins Vol. 1A. H. Neurath and K. Bailey (eds.). Academic Press New York.Sanger F.1949. Fractionation of oxidized insulin. Biochem. J.44: 126-128.|ISI|ChemPort|Sanger F. and Tuppy H.1951. The amino acid sequence in the phenylalanyl chain of insulin. 1. The identification of lower peptides from partial hydrolysates. Biochem. J.49: 463-481.|PubMed|ISI|ChemPort|Sanger F. and Tuppy H.1951. The amino acid sequence in the phenylalanyl chain of insulin. 2. The investigation of peptides from enzymic hydrolysates. Biochem. J.49: 481-490.|PubMed|ISI|ChemPort|Sanger F. and Thompson E.O.P.1953. The amino acid sequence in the glycyl chain of
作者：
LUEDEKE, GFARNHAM, RBJR.George Luedeke
Jr.: received his BS degree in Mechanical Engineering from Massachusetts Institute of Technology and his MS degree in Product Design from Illinois Institute of Technology. Early in his career Mr. Luedeke joined General Motors Corporation as a designer responsible for development of people mover and rail rapid transit systems. From 1964 to 1974 he was with Hughes Aircraft Company. At Hughes he performed analyses and developed designs for a wide variety of program and proposal efforts such as: High Speed Ground Transportation (DOT) Task Force Command Center (NAVY) Panama Canal Marine Traffic Control Center (Panama Canal Co.) Royal Iranian Navy Command Center (Iran) Tactical Information Processing and Interpretation Center (Air Force) and WALLEYE CONDOR and PHOENIX Missile Systems (NAVY). He also had marketing development responsibilities related to the diversification of Hughes resources in civil business areas such as: Automatic train control (WMATA BARTD SCRTD) water/sewage treatment plant automation (Santa Clara County) Aqueduct Control (SWR) Hydrometeorological data collection (BPA WMO) and Salton Sea basin systems analysis (Dept. of the Interior). He was responsible for combat system integration for the Hughes 2000T Surface Effect Ship (SES) proposal. He also conducted detailed studies concerning ship flexure for the Improved Point Defense Target Acquisition System Program and for the definition of operational High Energy Laser weapon installations on a series of conventional monohulls (DLG DD and CVN). Since 1974 Mr. Luedeke has been employed at RMI Inc. (formerly Rohr Marine Inc.). During this time he has held several positions. His responsibilities have included directing a number of studies on advanced SES concepts managing activities defining mission/cost effectiveness of military and commercial SES's including defining the operational benefits and enhanced survivability characteristics of cargo SES's for high speed military sealiftfor NA TO and Southeast Asia
This paper will present the results of a marketing, engineering, and economic analysis of advanced marine vehicles done by IMA Resources, Inc. and RMI, Inc., in support of a Maritime Administration project to study “...
This paper will present the results of a marketing, engineering, and economic analysis of advanced marine vehicles done by IMA Resources, Inc. and RMI, Inc., in support of a Maritime Administration project to study “Multimode Express Shipping”. The study was conducted in 1981 and examined the economic benefits of using advanced marine vehicles as express cargo vessels in domestic and international service. Commodity characteristics, desirable express carrier rates, and potential high payoff service and route alternatives were identified. Advanced marine vehicles were surveyed and sized to meet desirable deadweight and block speed objectives. The costs of operating these craft on a variety of trade routes were calculated using an advanced marine vehicle economic analysis program. Revenues, expenses, break-even, profit and loss, cash flow requirements, tax summary and economic indicators (i.e., cost/ton – mile, etc.) were projected over the expected life of the vehicles as was return on investment. Traffic density and market penetration considerations narrowed the field of choice to smaller sized advanced marine vehicle carriers (i.e., 50 and 250 ton deadweight) and to three international and five domestic routes.
In the paper the problem of optimal input design for the identification of linear, time invariant distributed parameter systems is considered. Both spatial and temporal characteristics of the input signal are optimize...
In the paper the problem of optimal input design for the identification of linear, time invariant distributed parameter systems is considered. Both spatial and temporal characteristics of the input signal are optimized from the point of view of estimation accuracy which is expressed in terms of the determinant of the information matrix. The necessary conditions for the optimality of input design are derived and examples of their applications are given.
This paper deals with the problem of determining time-varying parameters in a system described by a linear differential equation from noise-free observations of input/output signals. For the special case of periodical...
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This paper deals with the problem of determining time-varying parameters in a system described by a linear differential equation from noise-free observations of input/output signals. For the special case of periodically varying parameters, two identifiability questions are discussed: 1) how to check whether the available experimental data allow unique determination of system parameters, and 2) how to design the experiment to accomplish this with a priori knowledge. Necessary and sufficient conditions for identifiability are obtained.
The problem of optimal input design for the identification of linear, time invariant distributed parameter systems is considered. Both spatial and temporal characteristics of the input signal are optimized from the po...
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The problem of optimal input design for the identification of linear, time invariant distributed parameter systems is considered. Both spatial and temporal characteristics of the input signal are optimized from the point of view of estimation accuracy which is expressed in terms of the determinant of the information matrix. The necessary conditions for the optimality of input design are derived and examples of their applications are given.
Structural aspects are studied of nonlinear controlsystems in a setting of differentiable manifolds. As a generalization of the setup commonly used in linear multivariable control, the regulator problem is defined as...
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Structural aspects are studied of nonlinear controlsystems in a setting of differentiable manifolds. As a generalization of the setup commonly used in linear multivariable control, the regulator problem is defined as that of controlling a fixed plant to track (or reject) reference (or disturbance) signals generated by a fixed dynamic model called the exosystem. It is shown that, if the controller is error-driven, if perfect tracking is achieved in the limit t→∞, and if a suitable observability condition is present, then the controller necessarily incorporates a copy (internal model) of the exosystem dynamics. This result represents a counterpart in the nonlinear differentiable setting to various results already known for linear systems and for abstract automata.
The generalized discrete time state space system Tx(k+1) = Ax(k) + Bu(k) with T possibly singular is considered and the problem of simulating and controlling such a system is solved. The solution consists of construct...
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The generalized discrete time state space system Tx(k+1) = Ax(k) + Bu(k) with T possibly singular is considered and the problem of simulating and controlling such a system is solved. The solution consists of construction of a suitable state space system based on Silverman's inversion algorithm. This construction completely characterizes the class of admissible initial conditions and inputs and permits the calculation of an input sequence to effect an admissible transfer of the generalized state.
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