Content
1974, Volume 16, Issue 4
- 41-43 Digital potentiometer for the hybrid computer EAI 680 - PDP 8/I
by Højberg, K. Søe & Olsen, Jens V.
1974, Volume 16, Issue 3
- 2-8 Parameter identification in models of hydrologic systems using the digital simulation language PDEL
by Tam, Wing Cheung & Karplus, Walter J. - 9-14 An application of the hybrid alternating direction implicit procedure to the simulation of an unconfined aquifer
by Bishop, Kenneth A. - 15-30 Simulation of the optimal combination of waste treatment and spatially distributed discharge of effluent using Pontryagin's minimum principle
by Davidson, Burton & Mendiratta, A.K. - 31-34 Implementation of the modal technique to diffusion processes
by Vansteenkiste, G.C. & De Schutter, F. - 35-45 Analog study of the draw down of the groundwater table
by Renard, G. & Aucouturier, M. & Yaher, J.P. - 47-58 Analysis of hybrid computer interface errors on the solution of partial differential equations
by Ung, Man T. & Bekey, George A. & Merritt, Michael J.
1974, Volume 16, Issue 2
- 2-11 Recent computer system developments and continuous system simulation
by Korn, Granino A. - 12-19 Higher order incremental integrators for DDA type computer structures
by Dixon Hughes, J.R. & Sastry, V.R. & Wong, D.G. - 20-25 Computer algorithm for hyperbolic equations
by Vichnevetsky, R. & Tomalesky, A.W. - 26-37 Hybrid reconstructors — Interpolators
by Preucil, M. - 38-45 Electrical analogue for a partial differential equation
by Barker, Derek C. - 46-51 On the simulation of dynamic systems and their graphic display by hybrid computer
by Galletti, Carlo & Lucifredi, Aleramo & Rossi, Aldo
1974, Volume 16, Issue 1
- 3-16 Physical criteria in computer methods for partial differential equations
by Vichnevetsky, Robert - 17-25 Continuous-system simulation languages: A state-of-the-art survey
by Nilsen, Ragnar N. & Karplus, Walter J. - 26-34 Computer simulation study of the cardiovascular and related physiological systems
by Rideout, Vincent C. & Snyder, Maurice F. - 35-39 Digital control of an analog marcketting model
by Clemence, C.R. - 40-43 A model for the Purkinje fibers action potential, using a Hybrid Computer
by Costanti, F.J. & Santos, J.A.R.
1973, Volume 15, Issue 4
- 145-158 Simulation sur calculateur analogique du fonctionnement mecanique du systeme cardiovasculaire
by Demoment, Guy & Peronneau, Pierre & Duperdu, Raymond & Hinglais, Jacques - 159-167 Simulation of an asynchronized synchronous machine
by Hogg, B.W. & Williams, D. - 168-174 Systems analysis applied to a hybrid computer simulation of a missile reentering the atmosphere
by Ricci, Ferdinand J.
1973, Volume 15, Issue 3
- 89-91 Contribution to the estimation of the speech message from the corrupted signal with noise
by Gyergyek, L. & Babic, R. - 92-96 Stabilite des calculateurs a reseaux comportant des resistances negatives
by Mesnard, Guy & Hien, Vo Hoang & Vidal, Jean - 97-103 Procedures de stabilisation des reseaux comportant des resistances negatives
by Hien, Vo Hoang & Mesnard, Guy & Heitz, Lionel - 104-114 Etude analogique des equations
by Genin, J. & Genin, R. - 115-119 Procedure De Calcul Des Coefficients Des Series De Froebenius Solutions Des Equations Fuchsiennes
by Bastin, Henri & Delchambre, Monique
1973, Volume 15, Issue 2
- 49-53 Hybrid computer solution of queueing systems
by Khalil, T.M. & Valisalo, P.E. & Copsey, A. - 54-61 Réalisation des Modèles électriques pour des Systèmes thermiques basée sur le Théorème de Thévenin
by Różański, Lech - 62-64 Principes d'un calculateur hybride associant un calculateur numerique a un reseau de resistances
by Caussade, B. & Piquemal, J. & Zarcone, C. - 65-71 Stabilité des Montages à Amplificateur opérationnel Application aux résistances négatives
by Hien, Vo Hoang & Mesnard, Guy
1973, Volume 15, Issue 1
- 3-7 Resolution de certaines equations integrales et integro-differentialles sur calculateur hybride
by Coeurdeuil, M.M. Gilles & Mezencev, Romane - 8-15 The measurement of the impedance by automatic adjustment of a physical model
by van de Ven, H.H. & Gisling, A.P. & Eykhoff, P. - 16-18 Simulation des etats electroniques dans les solides au moyen d'un calculateur analogique a reseau de resistances
by Churassy, Serge & Mesnard, Guy - 19-24 Solution de l'equation algebrique par une methode analogique. Application aux equations algebriques a coefficients parametriques
by Sharafedin, Ahmad
1972, Volume 14, Issue 4
- 183-190 Utilisation du calcul analogique repetitif a la resolution de l'equation de Schrodinger dans le cas d'un puits de potentiel quelconque
by Forestier, Christian & Mesnard, Guy - 191-195 Processus iteratif pour l'imposition des conditions aux limites en calcul hybride par reseaux
by Renard, Guy & Teil, Daniel & Zarka, Joseph - 196-206 Une methode analogique de simulation des champs thermiques stationnaires non lineaires en presence de sources internes de chaleur
by Jaroslaw, Pakleza & Wojciech, Lobodzinski & Angel, Osorio - 207-209 Generateur de sequence programmarle
by Roux, P.
1972, Volume 14, Issue 3
- 114-126 Utilisation du calcul hybride a la determination de la fonction de partition et des fonctions thermodynamiques d'une particule mobile dans un puits de potentiel
by Forestier, Christian & Mesnard, Guy - 127-129 Resolution de l'equation de Schrodinger a une dimension a l'aide d'un reseau de resistances
by Hien, Vo Hoang & Mesnard, Guy - 130-135 Stabilite dynamique d'une boucle analogique et precision de la resolution
by Bonnemay, Alain - 136-144 Dynamic simulation of an aircraft under the effect of vortex wake turbulence
by Iveraen, J.D. & Bernstein, S. - 145-148 Simulation of a mechanical pendulum and representation of the corresponding cylindrical phase surface
by Cocquyt, G. & Vloemans, G. - 149-151 Etude du champ magnetique dans des toles ferromagnetiques au moyen d'un calculateur analogique
by Ana Necula, Maria & Spinei, Fänicä
1972, Volume 14, Issue 2
- 55-62 A general formulation of analogue computer programming and scaling
by Pettersen, Odd & Vetter, William J. - 63-64 Pattern recognition using a hybrid computer
by van der Mast, C.A.P.G. - 65-69 La representation analogique des champs harmoniques tridimensionnels indefinis et son application au champ electrique cardiaque
by Malavard, L. & Renard, G. & Rohner, J.J. - 71-80 Hybrid simulation of the transient heat-transfer in a fixed bed with axial conductivity
by Buis, J.P.
1972, Volume 14, Issue 1
- 2-5 Die Hybride Darstellung Von Grőssen In Differentialgleichungen
by Feilmeier, M. - 6-9 Automatisation D'un Processus Iteratif Convergent De Resolution De Systems Lineaires Homogenes Et Parametriques Par Un Calculateur Hybride
by Soldat, Georges & Mesnard, Guy - 10-16 Dynamo-electric amplifiers with matric computor feedback control
by Honnell, Pierre M. & Borgwald, Kenneth J. - 17-31 An analog computer in hybrid loops
by Kogan, B.Ya. & Rybashov, M.V. & Babushkin, F.M.
1971, Volume 13, Issue 4
- 150-155 Dare II: Fast on-line digital simulation on a small computer
by Liebert, Thomas A. - 156-159 High gain integrated amplifiers stabilize function generators
by Rodriguez-Izquierdo, G. & Civit, A. - 160-164 Le depouillement des valeurs caracteristiques du mouvement des vehicules sur calculatrice analogique
by Suske, Arnost
1971, Volume 13, Issue 3
- 111-115 Hybrid data reduction for inflight analysis of a missile's warhead adaption kit and fuze
by Engle, Ingrid A. - 116-123 Computer simulation and parameter optimization of phase-locked loops (PLL)
by Ricci, Fred - 124-130 Planar librations of gravity-oriented satellites using analog simulation
by Tschann, C. & Modi, V.J. & Soudack, A.
1971, Volume 13, Issue 2
- 55-59 Un dispositif de derivation par echantilonnage pour signaux de tres basses frequences
by Barugola, A. & Gay, J.Y. - 60-75 Simulation of a brushless synchronous machine with an analog computer
by Lauw, H.K. - 76-81 Computer simulation of cybernetic systems
by Ricci, Fred J. - 82-84 An incremental field plotting method for analogue computers
by Midgley, Denis
1971, Volume 13, Issue 1
- 2-5 Simulation exacte d'un retardateur pour fonctions polynomiales
by Miron, C. & Peteanu, Lelia - 6-10 A simulated non-linear self-inductance
by Baert, D. - 11-17 Analog unit for the performance of ∫t0f(t) dg(t)
by Garcia, B. & Civit, A. - 18-24 Analog computer for non-linear optimal control
by Sahni, R.N.
1970, Volume 12, Issue 4
- 172-181 Linear functional entries for the Matric Computor
by Honnell, P.M. & Borgwald, K.J. & Mulholland, R.J. - 182-191 Contribution to the problem of initial conditions of linear dynamical systems at a discontinuous driving function
by Kremen, Jaromir & Demel, Petr - 192-203 Simulation of a flight instrument that indicates and reports true altitude of an aircraft
by Jehly, Lynn C. & Alton, Everett D.
1970, Volume 12, Issue 3
- 118-121 A programme for on-line process identification
by Madden, Barry G. & Mason, Dennis A. - 122-129 On a direct method of optimization
by Humo, Emir A. - 130-137 Turbulent diffusion in the lower atmosphere : A hybrid simulation study
by Shih, Chau & Karplus, W.J. - 138-148 An optimization study on a hybrid computer
by Gonzalez, Robert S.
1970, Volume 12, Issue 2
- 64-74 Optimale Skalierung Gewisser Auf Dem Analogrechner Zu Lösender Differentialgleichungssysteme Durch Lineare Optimierung
by Behringer, Fred Alois - 75-80 A proposal for a hybrid computer with programmed parameter setting - APAC
by Paker, Y. - 81-90 A Monte Carlo technique using a fast repetitive analog computer for determining lowest eigenvalues of partial differential equations for various boundaries, with applications
by D'Aquanni, Richard T.
1970, Volume 12, Issue 1
- 2-8 A computing method for the simulation of non-steady state burning of solid propellants
by Vichnevetsky, R. - 9-20 Eine problemorientierte Darstellung von hybriden Rechenprozessen
by Mannshardt, Reinhold - 21-26 Un calculateur analogique d'integrales doubles et ses applications a la mecanique des fluides
by Brun-Gabriel, J.M. - 27-32 An improved method for analog computer scaling
by Hall, C.R. & Kahne, S.J. - 33-38 Performance testing of analog computers
by Holst, Per A.
1969, Volume 11, Issue 4
- 184-188 On-line tensile test data reduction using a remote analog computer
by L.Y.M., Wayne - 189-194 Determination analogique de l'observabilite et de la commandabilite des systems echantillonnes
by Nougaret, M. & Giraud, S. - 195-204 Simulation de la commande automatique de positionnement des cylindres de laminoirs
by Danthine, A. & Van Den Hove, C. - 205-211 Hybrid model of an inventer-induction motor system
by De Carli, A. & Raimondi, T. - 212-225 Le C.H.R. 10.000 calculateur hybride a reseaux a commutation electronique
by Renard, G. & Quinio, J. - 226-232 Study of the dynamic errors introduced by the delays inherent on combined analog-digital computation in hybrid systems
by Vansteenkiste, Ghislain C.
1969, Volume 11, Issue 3
- 124-130 Diffe : An on-line differential-equation-solving routine with automatically scaled display
by Trevor, A. & Wait, J.V. - 131-137 Etude de quelques regimes transitores d'une diode tunnel sur le calculateur analogique a courants porteurs ANALAC A 110
by Andre, P. & Gagnepain, J.-J. - 138-141 Un simulateur modulaire d'echanges thermiques transitoires
by Pakleza, Jaroslaw - 142-149 Simulation analogique d'equations de diffusion non lineaires en regime transitoire
by Phuoc Loc, T.A. - 150-156 Sur l'optimisation des systems en temps reel
by Efthymiatos, D. & Arndt, W.
1969, Volume 11, Issue 2
- 60-64 Time optimal control of time varying third order plants
by Yastreboff, M. - 65-74 Exemple de resolution par voie analogique de probleme d'optimalisation
by Apter, H. - 75-85 Traitement par des techniques analogiques et digitales associees d'un probleme d'aerodynamique non lineaire comportant des frontieres libres
by Maria-Sube, Roland - 86-89 Simulation of a classical detection problem: Detection of a phase-coherent rf pulse train of unknown phase in additive gaussian noise
by Belt, J.E. & Harris, Cliff A.
1969, Volume 11, Issue 1
- 4-10 The solution of heat transfer problems by automated Liebmann networks
by Missen, J.I. & Stops, D.W. - 11-20 Solving two-point boundary-value problems by a level-control method
by Dekker, Ir.L. - 21-23 Simulation et formulation des systemes multidimensionnels
by Fossard, A.J. & Eltgen, J.J.
1968, Volume 10, Issue 4
- 190-198 Analog computer gradient techniques for parameter optimization
by Smith, D.A. & Soudack, A.C. - 199-210 The use of parallel logic in teaching engineering and science
by Ung, Man T. & Klein, Gerald - 211-213 Quelques solutions originales utilisees dans la construction d'une grande calculatrice analogique
by Popov, V.M. & Tataru, N.N. & Bajenesco, T.I.
1968, Volume 10, Issue 3
- 132-134 Die Loesung Von Optimierungsaufgaben Mit Zeitabhaengigen Parametern Auf Einem Elektronischen Analogrechner
by Kuntze, Karlheinz - 135-143 Generation of angle and amplitude modulation functions on the matric computor
by Honnell, P.M. & Mulholland, R.J. - 144-150 The checking and correction of the analog and hybrid computation by the redundant variables method
by Ignatiev, M.B. - 151-154 Hybrid computing units using a pulse ratio modulator
by Kontos, John - 155-158 Relay operated memory-pair
by Pillmeier, Rudolf J. & Dial, Joseph H.
1968, Volume 10, Issue 2
- 65-71 Representation analogique des champs thermiques et de diffusion four l'etude de la condensation dans les elements de construction
by Radu, A. - 72-75 Die loesung von Optimierungsaufgaben auf einem elektronischen Analogrechner mit Hilfe der Gradientenmethode
by Kuntze, Karlheinz - 76-79 Design method for digital dead beat controllers
by Kingma, Y.J. - 80-84 Transient behaviour of non-minimum phase-shift networks
by Mosca, V. - 85-86 An immittance invertor approach to RC oscillator realization using operational amplifiers
by Keen, Arthur W. & Glover, Jacqueline L.
1968, Volume 10, Issue 1
- 4-5 Results and conclusions of the fifth AICA meeting
by Cuenod, M. - 6-18 Hybrid computer solution of heat exchanger partial differential equations
by Carling, L.N. - 19-23 Modern digital control for a small iterative analog computer: The APE II digital module
by Conant, Brian K. - 27-28 Procede d'exploitation rapide des reseaux a resistances
by Doustens, A. & Piquemal, J. & Thirriot, C. - 29-31 Un multiplicateur simple a diodes
by Bajenesco, Ing. Titu
1967, Volume 9, Issue 4
- 176-181 Hybrid analog-digital sample-averaging computer for ASTRAC II
by Maybach, R.L. - 182-187 Methode generale de calcul de systems lineaires en oscillation forcee a partir de considerations energetiques
by Alais, Pierre - 188-194 A hybrid approach to automatic rescaling on general purpose analog computers
by Bingulac, S.P. & Milovanovic, M.M. & Lazarevic, B.J. & Lolic, B. - 195-197 Cylindrical thermal equations for the analog computer
by Degreef, J.F. - 197-197 Dynamic aseismic design of an elevated water tower
by Kokinopoulos, E.F.
1967, Volume 9, Issue 3
- 118-121 Nouveaux resultats obtenus a l'aide du calculateur analogique dans l'etude de l'equation du mouvement des particules d'une suspension solide entrainees par un flux courbe
by Bajenesco, T.I. - 122-130 A mathematical model for the investigation of three-dimensional fields with asymmetric boundaries
by I.P., E.S. - 131-141 Dynamic aseismic design of an elevated water tower
by Kokinopoulos, E.H. - 142-146 Optimal generation of arbitrary functions
by Vansteenkiste, Ch.J.
1967, Volume 9, Issue 2
- 68-75 An analog computer study of the dynamic behavior of stressed thin ferromagnetic films
by Borsei, A. & Estrin, G. - 76-80 Analog simulation of a ferroresonant system including analysis of hysteresis loop
by Santesmases, J.G. & Ayala, J. & Cachero, A.H. - 81-85 Analog computer solution of ship's deviation due to submarine d.c. cable
by Crosbie, R.E. & Hingorani, N.G.
1967, Volume 9, Issue 1
- 3-13 Etude sur calculateur analogique d'un champ laplacien plan a donnees de Dirichlet: ecoulement author d'un profil variable
by Mizzi, F. & Maumet, P. - 14-15 Ein elektronischer Schalter fur Analogrechner
by Weidner, Helmut - 16-23 ADAC — A programmed direct analog computer
by Paker, Yakup & Unger, Stephen H. - 24-29 The analogue computer simulation of an alloy junction transistor wide band equivalent circuit
by Freeman, E.A. & Karaksi, M.R. - 30-33 Simulation techniques for distributed parameter systems
by McCann, Michael J.
1966, Volume 8, Issue 4
- 187-188 A sequentially-switched variable-gain operational amplifier
by Lockhart, G.B. & Earls, J.C. - 189-192 Generateur de fonction exponentielle
by Aubrun, Michel & Kauffmann, Jean-Marie - 193-196 Generation of inverse functions by the method of steepest descent
by Maybach, R.L. - 197-202 A novel paper-tape function generator and multiplier
by Lovas, Laszlo T. & Soudack, Avrum C. - 203-205 Preliminary report on a new kind of curve follower
by Bozicevic, Juraj & Gospodnetic, Ratko
1966, Volume 8, Issue 3
- 124-137 Iterative methods for the analog simulation of physical systems containing flowing fluids
by Mathis, A. & Giordano, P. & Gatto, G. - 138-145 Etude et realisation d'un interrupteur a transistors pour calculateur analogique
by Keymeulen, R. - 146-154 Adjusting resistors in an electronic way
by Dekker, L.
1966, Volume 8, Issue 2
- 68-77 Transfer functions and the matric computor
by Honnell, Pierre M. & Mulholland, Robert J. - 78-84 Study of slow surface wave by analog computor
by Mukherjee, S. - 85-88 Analog computer study of a non-linear automobile suspension system
by Melton, R.D. & Soudack, A.C.
1966, Volume 8, Issue 1
- 4-12 Representation analogique de la commutation de noyaux magnetiques
by Vorst, André Vander - 13-21 A hybrid-code differential analyzer
by O'Grady, Emmett Pearse
1965, Volume 7, Issue 4
- 177-185 Resolution par reseaux resistifs de l'equation de la diffusion
by Boscher, J. - 186-189 Multiplying and integrating in a hybrid way
by Dekker, L. - 190-194 On the analog computer solution of first-order partial differential equations
by Little, W.D. & Soudack, A.C. - 195-204 Etude de la stabilite d'ecoulements entre plans paralleles en presence d'un champ magnetique a l'aide d'un calculateur analogique
by Delchamber, M.
1965, Volume 7, Issue 3
- 132-137 ASTRAC-I Study of an orthogonal-function communications system
by Conant, Brian K. - 138-142 Contribution a l'etude sur calculatrice analogique des asservissements a redresseurs controles et a modulation de largeur d'impulsions
by Sevely, Y. & Vidal, P. - 143-146 Changement automatique d'echelle en calcul analogique
by De Greef, F.
1965, Volume 7, Issue 2
- 72-76 The use of the analog computer in teaching engineering systems
by Berry, F.G. & Soudack, A.C. - 77-81 Parameter sweep in iterative analog computer techniques
by Humo, Emir - 82-91 A matric approach to the stability of solutions of algebraic systems by arithmetic and analytic machines
by Krishnamurthy, E.V. & Honnell, P.M. - 92-96 Determination of the normal modes of a two-point boundary value problem
by Fadden, Edward J.
1965, Volume 7, Issue 1
- 4-6 A diode function generator made suitable for two variables
by Visman, A.C.P. - 7-11 Determining the character of the relation between heat input and reflux ratio in a rectification column
by Pesina (Phraha), Ing. I. - 12-17 Automatic optimization of linear feedback control systems on an analog computer
by Bingulac, S. & Kokotovic, P. - 18-22 The automatic synthesis of control systems with constraints
by Douce, J.L. & Wilson, H. - 23-24 A.D.C. Electronic analogue simulation of the subharmonic response of a series ferroresonant circuit
by Earls, J.C. - 25-26 An analog computer study of parasitic effects on tunnel-diode switching speeds
by Soudack, A.C. & Walton, J.T.
1964, Volume 6, Issue 4
- 232-242 Analogue simulation of transfer functions
by Noronha, L.G. - 243-248 An evaluation of static and dynamic errors in the solution of a first-order partial differential equation on an analog computer
by Wiig, Karl M. - 249-255 Mesure de l'integrale de dirichlet et ses applications
by Devooght, J. & Sylin, G. - 256-258 Some roulette-type curves
by Causon, A.
1964, Volume 6, Issue 3
- 157-161 Optimalisation iterative sur calculateur analogique
by Bingulac, S. & Humo, E. - 162-168 Le calculateur universel analac
by Baudras-Chardigny, A. - 169-177 Combined computation with slow-type and repetitive analog computers
by Miura, Takeo & Ata, Junzo Iw - 179-182 Arrangement and scaling of equations
by Sams,
1964, Volume 6, Issue 2
- 77-88 A study of high-speed analog-computer performance (the astrac I system performance)
by Brubaker, Thomas A. - 89-104 Iterative analog computations
by Holst, Per Asbjörn - 105-109 Analogue computer simulation of a time-dependant delay using the concept of generalised transfer function
by Vichnevetsky, R. - 110-111 A random sample-time generator with defined statistical properties
by King, R.E. - 112-117 Development of a program for the hybrid simulation of a tubular reactor
by Witsenhausen, Hans - 118-124 Simulation of space vehicle with reaction jet control system
by Landauer, J. Paul
1964, Volume 6, Issue 1
- 4-8 Analog electrical model for the use of Mitrovic's criterion in analysis feedback control systems
by Petric, Jovan - 9-21 Finite differences analog models of physical systems containing flowing fluids
by Mathis, A. & Giordano, P. - 22-31 Digital expansion system for « ASTRAC I
by Eckes, Harry R. - 32-37 A hybrid/analog-digital one-parameter optimizer
by Mitchell, Baker A.
1963, Volume 5, Issue 4
- 196-199 Exact simulation of a special first order partial differential equation
by Hempel, Arvid B. - 200-203 A cumulative probability distribution analyser
by King, R.E. & Brown, W.A. - 204-209 Resonance method for the determination of the eigenvalues of matrices on an analog computer
by Dekker, Ir.L. & Heins, W. - 210-215 Optimum temperature profiles in tubular reactors
by Solheim, Ole Andreas
1963, Volume 5, Issue 3
- 137-140 The application of a repetitive differential analyzer to a flutter problem
by Petric, Jovan - 141-149 Time-sharing computation utilizing analog memory
by Miura, Takeo & Iwata, Junzo - 150-155 Traceur automatique de trajectoires de particules chargees
by Sylin, par G. - 156-159 Simrar: Simulated receiver and recorder for statistical measurements
by Fife, Dennis W. - 160-161 Processing of the auto and cross-correlation functions to step response
by van der Grinten, P.M.E.M. & Krijger, W.
1963, Volume 5, Issue 2
- 63-74 The code Apache intended for the programming of an analogue problem by means of a digital computer
by Green, C. & Debroux, A. & Del Bigio, G.P. & D'Hoop, H. - 75-79 The hybrid computer for automatic control
by Noda, Katsuhiko & Tsuji, Saburo & Sugie, Noboru - 80-87 Dynamic programming and hybrid computation
by Vichnevetsky, R. & Waha, J.P. - 88-89 Experimental calibration of band pass filters by the impulse method
by Vichnevetsky, R. - 89-90 Analog multi-comparator for multiple decisions or analog-to-digital conversion
by Korn, Granino A. - 90-93 Use of the berkeley « Easecomputer in evaluating double integrals
by Bayly, J.G. & Soudack, A.C. - 93-95 Parameter-perturbation generator for analog-computer error and optimization studies
by Korn, Granino A.