Kiyotaka YAMAMURA


Characteristic Analysis and Tolerance Analysis of Nonlinear Resistive Circuits Using Integer Programming
Kiyotaka YAMAMURA Suguru ISHIGURO Hiroshi TAKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/03/01
Vol. E99-A  No. 3  pp. 710-719
Type of Manuscript:  PAPER
Category: Nonlinear Problems
Keyword: 
nonlinear circuit analysiscircuit simulationcharacteristic analysistolerance analysisinteger programmingCPLEX
 Summary | Full Text:PDF(1.5MB)

Finding All Solutions of Piecewise-Linear Resistive Circuits Using Separable Programming
Kiyotaka YAMAMURA Hideki TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/05/01
Vol. E97-A  No. 5  pp. 1037-1041
Type of Manuscript:  PAPER
Category: Nonlinear Problems
Keyword: 
nonlinear circuit analysiscircuit simulationfinding all solutionsmathematical programming
 Summary | Full Text:PDF(762KB)

DC Operating Point Analysis of Transistor Circuits Using the Variable-Gain Homotopy Method
Kiyotaka YAMAMURA Takuya MIYAMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/05/01
Vol. E97-A  No. 5  pp. 1042-1050
Type of Manuscript:  PAPER
Category: Nonlinear Problems
Keyword: 
nonlinear circuit analysiscircuit simulationSPICEhomotopy method
 Summary | Full Text:PDF(1.2MB)

An Efficient and Practical Algorithm for Finding All DC Solutions of Nonlinear Circuits Using GLPK
Kiyotaka YAMAMURA Koki SUDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/02/01
Vol. E92-A  No. 2  pp. 638-642
Type of Manuscript:  LETTER
Category: Nonlinear Problems
Keyword: 
nonlinear circuitcircuit simulationdc analysisinterval analysis
 Summary | Full Text:PDF(153KB)

A SPICE-Oriented Nonexistence Test for DC Solutions of Nonlinear Circuits
Wataru KUROKI Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/08/01
Vol. E90-A  No. 8  pp. 1661-1668
Type of Manuscript:  PAPER
Category: Nonlinear Problems
Keyword: 
nonlinear circuitcircuit simulationDC solutionSPICEhomotopy method
 Summary | Full Text:PDF(432.5KB)

An Efficient Homotopy Method That Can Be Easily Implemented on SPICE
Wataru KUROKI Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/11/01
Vol. E89-A  No. 11  pp. 3320-3326
Type of Manuscript:  PAPER
Category: VLSI Design Technology and CAD
Keyword: 
circuit simulationDC operating point analysisSPICEnonlinear circuithomotopy method
 Summary | Full Text:PDF(612.5KB)

A SPICE-Oriented Method for Finding DC Operating Points of Nonlinear Circuits Containing Piecewise-Linear Macromodels
Wataru KUROKI Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/11/01
Vol. E89-A  No. 11  pp. 3306-3312
Type of Manuscript:  PAPER
Category: Nonlinear Problems
Keyword: 
circuit simulationDC operating point analysisSPICEnonlinear circuithomotopy method
 Summary | Full Text:PDF(366.2KB)

An Efficient Homotopy Method for Finding DC Operating Points of Nonlinear Circuits
Yu IMAI Kiyotaka YAMAMURA Yasuaki INOUE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/10/01
Vol. E88-A  No. 10  pp. 2554-2561
Type of Manuscript:  Special Section PAPER (Special Section on Nonlinear Theory and its Applications)
Category: 
Keyword: 
circuit simulationDC operating point analysisnonlinear circuithomotopy method
 Summary | Full Text:PDF(412.9KB)

A Homotopy Method Using a Nonlinear Auxiliary Function for Solving Transistor Circuits
Yasuaki INOUE Yu IMAI Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/07/01
Vol. E88-D  No. 7  pp. 1401-1408
Type of Manuscript:  Special Section PAPER (Special Section on Recent Advances in Circuits and Systems--Part 1)
Category: General and Nonlinear Circuits and Systems
Keyword: 
circuit simulationcircuit analysishomotopy methodauxiliary functiontransistor circuit
 Summary | Full Text:PDF(284.9KB)

Finding All DC Operating Points of Piecewise-Linear Circuits Containing Neither Voltage nor Current Controlled Resistors
Kiyotaka YAMAMURA Daiki KAYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/06/01
Vol. E88-A  No. 6  pp. 1631-1634
Type of Manuscript:  LETTER
Category: Nonlinear Problems
Keyword: 
dc analysischaracteristic curvepiecewise-linear circuitfinding all solutions
 Summary | Full Text:PDF(133.3KB)

Path Following Circuits--SPICE-Oriented Numerical Methods Where Formulas are Described by Circuits--
Kiyotaka YAMAMURA Wataru KUROKI Hideaki OKUMA Yasuaki INOUE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/04/01
Vol. E88-A  No. 4  pp. 825-831
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 17th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
circuit simulatorSPICEnonlinear equationhomotopy methodoptimization problem
 Summary | Full Text:PDF(313.1KB)

An Initial Solution Algorithm for Globally Convergent Homotopy Methods
Yasuaki INOUE Saeko KUSANOBU Kiyotaka YAMAMURA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/04/01
Vol. E87-A  No. 4  pp. 780-786
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 16th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
nonlinear circuitcircuit simulationhomotopy methodinitial solutionunique solution
 Summary | Full Text:PDF(594.4KB)

Finding All Solutions of Transistor Circuits Using the Dual Simplex Method
Kiyotaka YAMAMURA Osamu NAKAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/02/01
Vol. E86-A  No. 2  pp. 434-443
Type of Manuscript:  PAPER
Category: Nonlinear Problems
Keyword: 
circuit simulationdc analysisfinding all solutionstransistor circuit
 Summary | Full Text:PDF(349.1KB)

An Efficient Algorithm for Finding All DC Solutions of Piecewise-Linear Circuits
Kiyotaka YAMAMURA Masaki SATO Osamu NAKAMURA Takayoshi KUMAKURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/11/01
Vol. E85-A  No. 11  pp. 2459-2467
Type of Manuscript:  PAPER
Category: Nonlinear Problems
Keyword: 
circuit simulationdc analysisfinding all solutionspiecewise-linear circuit
 Summary | Full Text:PDF(402.8KB)

A Practical Approach for the Fixed-Point Homotopy Method Using a Solution-Tracing Circuit
Yasuaki INOUE Saeko KUSANOBU Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/01/01
Vol. E85-A  No. 1  pp. 222-233
Type of Manuscript:  PAPER
Category: Nonlinear Problems
Keyword: 
homotopy methodfixed-point homotopyDC operating-pointcircuit simulationSPICE
 Summary | Full Text:PDF(540.9KB)

Finding All Solutions of Nonlinear Equations Using Inverses of Approximate Jacobian Matrices
Kiyotaka YAMAMURA Takayoshi KUMAKURA Yasuaki INOUE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/11/01
Vol. E84-A  No. 11  pp. 2950-2952
Type of Manuscript:  LETTER
Category: Nonlinear Problems
Keyword: 
interval analysisnonlinear equationsfinding all solutionsnumerical computation with guaranteed accuracy
 Summary | Full Text:PDF(140.1KB)

FOREWORD
Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/03/01
Vol. E84-A  No. 3  pp. 697-697
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(123.6KB)

Research Topics and Results on Nonlinear Theory and Its Applications in Japan
Kiyotaka YAMAMURA Kazuo HORIUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/01/01
Vol. E84-A  No. 1  pp. 7-13
Type of Manuscript:  INVITED PAPER (Special Section on the 10th Anniversary of the IEICE Transactions of Fundamentals: "Last Decade and 21st Century")
Category: 
Keyword: 
chaosneural networknonlinear circuit analysisnonlinear system theorynumerical method
 Summary | Full Text:PDF(173.5KB)

Finding All Solutions of Weakly Nonlinear Equations Using Linear Programming
Kiyotaka YAMAMURA Yoshii HATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/12/25
Vol. E83-A  No. 12  pp. 2758-2761
Type of Manuscript:  LETTER
Category: Numerical Analysis and Optimization
Keyword: 
interval analysisall solutionslinear programmingLP test
 Summary | Full Text:PDF(201.9KB)

Finding All Solutions of Transistor Circuits Using Linear Programming
Kiyotaka YAMAMURA Hitomi KAWATA Ai TOKUE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/06/25
Vol. E81-A  No. 6  pp. 1310-1313
Type of Manuscript:  LETTER
Category: Nonlinear Problems
Keyword: 
interval analysisall solutionstransistor circuitslinear programming
 Summary | Full Text:PDF(309.2KB)

On the Stability of dc Operating Points Obtained by Solving Hybrid Equations
Kiyotaka YAMAMURA Tooru SEKIGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/11/25
Vol. E80-A  No. 11  pp. 2291-2299
Type of Manuscript:  PAPER
Category: Nonlinear Problems
Keyword: 
nonlinear circuitdc operating pointstabilityhybrid equationhomotopy method
 Summary | Full Text:PDF(573.2KB)

A Contraction Algorithm Using a Sign Test for Finding All Solutions of Piecewise-Linear Resistive Circuits
Kiyotaka YAMAMURA Masakazu MISHINA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/10/25
Vol. E79-A  No. 10  pp. 1733-1736
Type of Manuscript:  LETTER
Category: Nonlinear Problems
Keyword: 
piecewise-linear resistive circuitall solutionssign test
 Summary | Full Text:PDF(313.7KB)

An Algorithm for Representing Nonseparable Functions by Separable Functions
Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/07/25
Vol. E79-A  No. 7  pp. 1051-1059
Type of Manuscript:  PAPER
Category: Nonlinear Problems
Keyword: 
separabilitynonlinear functioncomputational graphnumerical analysis
 Summary | Full Text:PDF(679.3KB)

A Modified Spherical Method for Tracing Solution Curves
Kiyotaka YAMAMURA Tooru SEKIGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/09/25
Vol. E78-A  No. 9  pp. 1233-1238
Type of Manuscript:  PAPER
Category: Numerical Analysis and Optimization
Keyword: 
spherical methodhomotopy methodsolution curvenonlinear equationcircuit simulation
 Summary | Full Text:PDF(486.5KB)

Finding All Solutions of Piecewise-Linear Resistive Circuits Containing Nonseparable Transistor Models
Kiyotaka YAMAMURA Osamu MATSUMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/02/25
Vol. E78-A  No. 2  pp. 264-267
Type of Manuscript:  LETTER
Category: Numerical Analysis and Self-Validation
Keyword: 
piecewise-linear resistive circuittransistor modelall solutionspairwise-separabilitysign test
 Summary | Full Text:PDF(293.6KB)

Finding All Solutions of Piecewise-Linear Resistive Circuits Containing Sophisticated Transistor Models
Kiyotaka YAMAMURA Nobuo SEKIGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/01/25
Vol. E78-A  No. 1  pp. 117-122
Type of Manuscript:  PAPER
Category: Numerical Analysis and Self-Validation
Keyword: 
piecewise-linear resistive circuittransistor modelall solutionsseparabilitysign test
 Summary | Full Text:PDF(479.9KB)

On Quadratic Convergence of the Katzenelson-Like Algorithm for Solving Nonlinear Resistive Networks
Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/10/25
Vol. E77-A  No. 10  pp. 1700-1706
Type of Manuscript:  PAPER
Category: Nonlinear Circuits and Systems
Keyword: 
piecewise-linear analysisnonlinear resistive networkKatzenelson algorithmglobal convergencequadratic convergenceseparability
 Summary | Full Text:PDF(491.6KB)

A Katzenelson-Like Algorithm for Solving Nonlinear Resistive Networks
Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/07/25
Vol. E77-A  No. 7  pp. 1172-1178
Type of Manuscript:  PAPER
Category: Numerical Analysis and Self-Validation
Keyword: 
piecewise-linear analysisnonlinear resistive networkKatzenelson algorithmhomotopy methodglobal convergencequadratic convergence
 Summary | Full Text:PDF(523.1KB)

Improving the Convergence of Spherical Algorithms for Tracing Solution Curves
Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/06/25
Vol. E77-A  No. 6  pp. 1085-1088
Type of Manuscript:  LETTER
Category: Numerical Analysis and Self-Validation
Keyword: 
spherical algorithmsolution curvenonlinear equationNewton's methodhomotopy method
 Summary | Full Text:PDF(247.5KB)

Finding All Solutions of Piecewise-Linear Resistive Circuits Containing Neither Voltage nor Current Controlled Resistors
Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/03/25
Vol. E77-A  No. 3  pp. 573-576
Type of Manuscript:  LETTER
Category: Nonlinear Circuits and Systems
Keyword: 
piecewise-linear resistive circuitall solutionssign testseparabilityparametric representation
 Summary | Full Text:PDF(259.9KB)

A Sign Test for Finding All Solutions of Piecewise-Linear Resistive Circuits
Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/01/25
Vol. E77-A  No. 1  pp. 317-323
Type of Manuscript:  PAPER
Category: Nonlinear Circuits and Systems
Keyword: 
piecewise-linear resistive circuitall solutionssign testseparabilitybranch-and-bound method
 Summary | Full Text:PDF(527.5KB)

Piecewise-Linear Analysis of Nonlinear Resistive Networks Containing Gummel-Poon Models or Shichman-Hodges Models
Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/01/25
Vol. E77-A  No. 1  pp. 309-316
Type of Manuscript:  PAPER
Category: Nonlinear Circuits and Systems
Keyword: 
piecewise-linear analysisnonlinear resistive networkpairwise-separabilityGummel-Poon modelShichman-Hodges modelKatzenelson algorithm
 Summary | Full Text:PDF(546.3KB)

A Simple Algorithm for Finding All Solutions of Piecewise-Linear Resistive Circuits
Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/10/25
Vol. E76-A  No. 10  pp. 1812-1821
Type of Manuscript:  PAPER
Category: Nonlinear Circuits and Systems
Keyword: 
piecewise-linear resistive circuitall solutionsseparabilitysign test
 Summary | Full Text:PDF(609.8KB)

Computation of Constrained Channel Capacity by Newton's Method
Kiyotaka YAMAMURA Shin'ichi OISHI Kazuo HORIUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/06/25
Vol. E76-A  No. 6  pp. 1043-1048
Type of Manuscript:  LETTER
Category: Numerical Analysis and Self-Validation
Keyword: 
constrained capacitydiscrete memoryless channelNewton's methodcontinuation methodKuhn-Tucker equations
 Summary | Full Text:PDF(389.9KB)

Detecting Separability of Nonlinear Mappings Using Computational Graphs
Kiyotaka YAMAMURA Masahiro KIYOI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/12/25
Vol. E75-A  No. 12  pp. 1820-1825
Type of Manuscript:  LETTER
Category: Analog Circuits and Signal Processing
Keyword: 
nonlinear functionseparabilitycomputational graph
 Summary | Full Text:PDF(451.5KB)

A Newton Algorithm for Computing the Capacity of Discrete Memoryless Channels
Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/11/25
Vol. E75-A  No. 11  pp. 1583-1589
Type of Manuscript:  PAPER
Category: Numerical Analysis and Self-Validation
Keyword: 
channel capacitydiscrete memoryless channelNewton's methodcontinuation methodKuhn-Tucker equations
 Summary | Full Text:PDF(506.6KB)

Exploiting Separability in Numerical Analysis of Nonlinear Systems
Kiyotaka YAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/03/25
Vol. E75-A  No. 3  pp. 285-293
Type of Manuscript:  INVITED PAPER (Special Section on the 4th Karuizawa Workshop on Circuits and Systems)
Category: 
Keyword: 
numerical analysisnonlinear systemseparability
 Summary | Full Text:PDF(649.4KB)

Improving the Efficiency of Integer Labeling Methods for Solving Systems of Nonlinear Equations
Kiyotaka YAMAMURA Keiko KATOU Makoto OCHIAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1991/06/25
Vol. E74-A  No. 6  pp. 1463-1470
Type of Manuscript:  Special Section PAPER (Special Issue on Nonlinear Theory and Its Applications)
Category: 
Keyword: 
 Summary | Full Text:PDF(624.4KB)

A Piecewise-Linear Homotopy Method with the Use of the Newton Homotopy and a Polyhedral Subdivision
Kiyotaka YAMAMURA Masahiro KIYOI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/01/25
Vol. E73-E  No. 1  pp. 140-148
Type of Manuscript:  PAPER
Category: Nonlinear Problems
Keyword: 
 Summary | Full Text:PDF(634.8KB)

Solving Nonlinear Resistive Networks by a Homotopy Method Using a Rectangular Subdivision
Kiyotaka YAMAMURA Kazuo HORIUCHI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/05/25
Vol. E72-E  No. 5  pp. 584-594
Type of Manuscript:  PAPER
Category: Circuit Theory
Keyword: 
 Summary | Full Text:PDF(860.2KB)

Quadratic Convergence of the Homotopy Method Using a Rectangular Subdivision
Kiyotaka YAMAMURA Kazuo HORIUCHI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/03/25
Vol. E72-E  No. 3  pp. 188-193
Type of Manuscript:  PAPER
Category: Numerical Calculation and Mathematical Programming
Keyword: 
 Summary | Full Text:PDF(458.4KB)

Iterative Decomposition Method with Mesh Refinements for Numerical Solution of Nonlinear Two-Point Boundary Value Problems
Kiyotaka YAMAMURA Shin'ichi OISHI Kazuo HORIUCHI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1985/06/25
Vol. E68-E  No. 6  pp. 382-383
Type of Manuscript:  LETTER
Category: Mathematics
Keyword: 
 Summary | Full Text:PDF(155.4KB)