Nishikawa, Seiki
Overview
Works:  47 works in 109 publications in 3 languages and 908 library holdings 

Genres:  Conference papers and proceedings 
Roles:  Author, Editor, Inventor, Contributor, Other 
Classifications:  QA614.73, 514.74 
Publication Timeline
.
Most widely held works by
Seiki Nishikawa
Variational problems in geometry by
Seiki Nishikawa(
Book
)
12 editions published between 2000 and 2002 in English and held by 261 WorldCat member libraries worldwide
12 editions published between 2000 and 2002 in English and held by 261 WorldCat member libraries worldwide
Lectures on geometric variational problems by
Seiki Nishikawa(
Book
)
16 editions published in 1996 in English and German and held by 183 WorldCat member libraries worldwide
The field of geometric variational problems, that is, nonlinear problems arising in geometry and topology from the point of view of global analysis, has developed very rapidly in the last decade. It was therefore felt timely to produce a set of presentations on this subject in which leading experts would provide general surveys of current research from the fundamentals to the most recent results with a view to future research. This volume will interest both mature researchers and graduate students concerned with gauge theory and low dimensional topology, theory of harmonic maps, minimal surfaces, and minimal submanifolds in Riemannian manifolds
16 editions published in 1996 in English and German and held by 183 WorldCat member libraries worldwide
The field of geometric variational problems, that is, nonlinear problems arising in geometry and topology from the point of view of global analysis, has developed very rapidly in the last decade. It was therefore felt timely to produce a set of presentations on this subject in which leading experts would provide general surveys of current research from the fundamentals to the most recent results with a view to future research. This volume will interest both mature researchers and graduate students concerned with gauge theory and low dimensional topology, theory of harmonic maps, minimal surfaces, and minimal submanifolds in Riemannian manifolds
Minimal surfaces, geometric analysis and symplectic geometry(
Book
)
8 editions published between 2001 and 2002 in English and held by 108 WorldCat member libraries worldwide
8 editions published between 2001 and 2002 in English and held by 108 WorldCat member libraries worldwide
Geometry and global analysis : report of the First MSJ International Research Institute, July 1223, 1993, Tohoku University,
Sendai, Japan by MSJ International Research Institute(
Book
)
11 editions published between 1993 and 1994 in English and Japanese and held by 71 WorldCat member libraries worldwide
11 editions published between 1993 and 1994 in English and Japanese and held by 71 WorldCat member libraries worldwide
On the reversion phenomena of Cu3% Ti alloys by
Kazuhiro Nagata(
Book
)
1 edition published in 1988 in English and held by 68 WorldCat member libraries worldwide
1 edition published in 1988 in English and held by 68 WorldCat member libraries worldwide
A study on the precipitation and reversion behaviors of Cu0.3% Cr alloy by the step annealing method by
Kazuhiro Nagata(
Book
)
1 edition published in 1988 in English and held by 67 WorldCat member libraries worldwide
1 edition published in 1988 in English and held by 67 WorldCat member libraries worldwide
Proceedings of the Fifth Pacific Rim Geometry Conference : held at Tohoku University, Sendai, Japan, from July 25 to July
28, 2000 by
2000, Sendai, Miyagiken) Pacific Rim Geometry Conference (5(
Book
)
7 editions published in 2001 in English and held by 21 WorldCat member libraries worldwide
7 editions published in 2001 in English and held by 21 WorldCat member libraries worldwide
Kikagakuteki henbun mondai by
Seiki Nishikawa(
Book
)
4 editions published between 1998 and 2006 in Japanese and held by 10 WorldCat member libraries worldwide
4 editions published between 1998 and 2006 in Japanese and held by 10 WorldCat member libraries worldwide
Area properties of television pictures by
Seiki Nishikawa(
Book
)
1 edition published in 1964 in English and held by 10 WorldCat member libraries worldwide
Area size distributions are measured for four different still pictures formed of 510 x 512 elements linearly quantized to eight amplitude levels (3 bits). The initial results of this continuing measurement program indicate that for the measured pictures: (1) First order brightness distributions tend to be uniform; (2) the largest number of areas occur for the intermediate grey levels, with considerably fewer areas encountered at either black or white; (3) the average size of black or white areas is larger than for the intermediate greys; (4) black and white areas appear to be more simply connected than intermediate grey areas; (5) the frequency of occurrence of areas of size nelements falls off with n a little slower than 1/sq n; (6) the area size distributions for each picture appear quite similar; the greatest difference between them are in the area size range 20200 elements, and in the presence or absence of one or two very large areas. From the data reported it is concluded that at least half of the discrete brightness areas in the picture have doubtful visual significance. (Author)
1 edition published in 1964 in English and held by 10 WorldCat member libraries worldwide
Area size distributions are measured for four different still pictures formed of 510 x 512 elements linearly quantized to eight amplitude levels (3 bits). The initial results of this continuing measurement program indicate that for the measured pictures: (1) First order brightness distributions tend to be uniform; (2) the largest number of areas occur for the intermediate grey levels, with considerably fewer areas encountered at either black or white; (3) the average size of black or white areas is larger than for the intermediate greys; (4) black and white areas appear to be more simply connected than intermediate grey areas; (5) the frequency of occurrence of areas of size nelements falls off with n a little slower than 1/sq n; (6) the area size distributions for each picture appear quite similar; the greatest difference between them are in the area size range 20200 elements, and in the presence or absence of one or two very large areas. From the data reported it is concluded that at least half of the discrete brightness areas in the picture have doubtful visual significance. (Author)
Tōchō chizu wa naze dekinai : chizu to sekkenmaku no sūgaku by
Seiki Nishikawa(
Book
)
2 editions published in 2014 in Japanese and held by 4 WorldCat member libraries worldwide
2 editions published in 2014 in Japanese and held by 4 WorldCat member libraries worldwide
Nonlinear processing of radar returns in MTI systems by
Rand Corporation(
Book
)
3 editions published between 1965 and 1968 in English and held by 3 WorldCat member libraries worldwide
An analysis of the effect of two nonlinear devices for processing coherent radar returns on the performance of a movingtarget indication (MTI) system. A linear MTI processorthe optimum detector for moving targets when clutter is homogeneous gaussian processis not optimum when clutter is a nonhomogeneous process, as is typical of terrain, where clutter amplitude varies widely between resolution cells. Some constant falsealarm rate (CFAR) technique must be used to prevent ground clutter from causing false alarms or low signal detectability. One method of achieving CFAR is by amplitude limiting before MTI cancellation. This study analyzes, quantitatively, the degradation in performance due to limiting, assuming a homogeneous clutter model. The analysis shows that a hard limiter, which destroys all amplitude information, severely degrades the system performance when the ground clutter has a Rayleigh amplitude distribution. A partial limiter, followed by an MTI canceller, is a better choice. (Author)
3 editions published between 1965 and 1968 in English and held by 3 WorldCat member libraries worldwide
An analysis of the effect of two nonlinear devices for processing coherent radar returns on the performance of a movingtarget indication (MTI) system. A linear MTI processorthe optimum detector for moving targets when clutter is homogeneous gaussian processis not optimum when clutter is a nonhomogeneous process, as is typical of terrain, where clutter amplitude varies widely between resolution cells. Some constant falsealarm rate (CFAR) technique must be used to prevent ground clutter from causing false alarms or low signal detectability. One method of achieving CFAR is by amplitude limiting before MTI cancellation. This study analyzes, quantitatively, the degradation in performance due to limiting, assuming a homogeneous clutter model. The analysis shows that a hard limiter, which destroys all amplitude information, severely degrades the system performance when the ground clutter has a Rayleigh amplitude distribution. A partial limiter, followed by an MTI canceller, is a better choice. (Author)
Homogeneous Kähler Einstein manifolds of nonpositive curvature operator by
Wakako Obata(
Book
)
1 edition published in 2007 in English and held by 3 WorldCat member libraries worldwide
1 edition published in 2007 in English and held by 3 WorldCat member libraries worldwide
Kikagaku(
Book
)
2 editions published in 2002 in Japanese and held by 3 WorldCat member libraries worldwide
2 editions published in 2002 in Japanese and held by 3 WorldCat member libraries worldwide
Constructions of harmonic maps between Hadamard manifolds by
Keisuke Ueno(
Book
)
1 edition published in 2001 in English and held by 2 WorldCat member libraries worldwide
1 edition published in 2001 in English and held by 2 WorldCat member libraries worldwide
Isometric pluriharmonic immersions of Kähler manifolds into semiEuclidean spaces by
Hitoshi Furuhata(
Book
)
1 edition published in 1995 in English and held by 2 WorldCat member libraries worldwide
1 edition published in 1995 in English and held by 2 WorldCat member libraries worldwide
Tōkei(
Book
)
1 edition published in 2007 in Japanese and held by 2 WorldCat member libraries worldwide
1 edition published in 2007 in Japanese and held by 2 WorldCat member libraries worldwide
Nonisotropic harmonic tori in complex projective spaces and configurations of points on Riemann surfaces by
Tetsuya Taniguchi(
Book
)
1 edition published in 1999 in English and held by 2 WorldCat member libraries worldwide
1 edition published in 1999 in English and held by 2 WorldCat member libraries worldwide
On maximal spacelike hypersurfaces in a Lorentzian manifold by
Seiki Nishikawa(
Book
)
3 editions published in 1983 in Undetermined and English and held by 2 WorldCat member libraries worldwide
3 editions published in 1983 in Undetermined and English and held by 2 WorldCat member libraries worldwide
Kyoritsu koza nijuisseiki no sugaku(
Book
)
1 edition published in 2014 in Japanese and held by 2 WorldCat member libraries worldwide
1 edition published in 2014 in Japanese and held by 2 WorldCat member libraries worldwide
Dirichlet problem at infinity for harmonic maps by
Daishi Watabe(
Book
)
1 edition published in 2000 in English and held by 2 WorldCat member libraries worldwide
1 edition published in 2000 in English and held by 2 WorldCat member libraries worldwide
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Associated Subjects
Analog computers Annealing of metals Coppertitanium alloys Dirichlet problem Einstein manifolds Gauge fields (Physics) Geometry Geometry, Affine Geometry, Analytic Geometry, Differential Global analysis (Mathematics) Global differential geometry Harmonic maps Image processing Kählerian manifolds Manifolds (Mathematics) MassachusettsHanscom AFB Mathematics Measurement Minimal surfaces RadarInterference Radar receiving apparatus Radio detectors Riemannian manifolds Riemann surfaces Symplectic geometry TelevisionPicture quality Torus (Geometry) Variational inequalities (Mathematics)