Finite Rank Criteria for H ∞ Control of Infinite-Dimensional Systems (2009)
Kenji Kashima, Yutaka Yamamoto
Abstract—This paper studies the H ∞ control of infinitedimensional systems whose transfer matrices are expressible as a series connection of a rational transfer matrix and a scalar (possibly...
A Case of Large Solitary Fibrous Tumor in the Retroperitoneum (2009)
Takeo Nomura, Ryuta Satoh, Kenji Kashima, Mutsushi Yamasaki, Kenichi Hirai, Fuminori Satoh, ...
Solitary fibrous tumor (SFT) is a rare spindle cell neoplasm mainly originated in the pleural cavity. We report here an unusual case of a large SFT in the retroperitoneum. A 27-year-old female...
Effects of time delay in feedback control of linear quantum systems (2008)
Nishio, Kazunori, Kashima, Kenji, Imura, Jun-ichi
We investigate feedback control of linear quantum systems subject to feedback-loop time delays. In particular, we examine the relation between the potentially achievable control performance and the...
Optimal Wavelet Expansion via Sampled-Data Control Theory (2008)
Kenji Kashima, Student Member, Yutaka Yamamoto, Masaaki Nagahara
Abstract—Discrete wavelet transform is usually executed by the so-called pyramid algorithm. It, however, requires a proper initialization, i.e., expansion coefficients with respect to the basis of...
Kenji Kashima, Yutaka Yamamoto
This paper gives some equivalent characterizations for invariant subspaces of H 2, when the underlying structure is specified by the so-called pseudorational transfer functions. This plays a...
Optimal Wavelet Expansion via Sampled-Data Control Theory (2007)
Kenji Kashima, Yutaka Yamamoto, Masaaki Nagahara
Wavelet theory provides a new type of function expansion and and has found many applications in signal processing. Discrete wavelet transform of a signal x(t) in L 2 (R) is usually computed by the...
Control of Quantum Systems Despite Feedback Delay (2007)
Kashima, Kenji, Yamamoto, Naoki
Feedback control (based on the quantum continuous measurement) of quantum systems inevitably suffers from estimation delays. In this paper we give a delay-dependent stability criterion for a wide...
Uchida, Hitoshi, Yokoyama, Shigeo, Kashima, Kenji, Nakayama, Iwao, Shimizu, Kei, Masumi, Shogo
A 53-year-old Japanese woman suffered hypophosphatemic osteomalacia secondary to bone tumor. Her clinical symptoms did not improve for a long time following the oral administration of Alfacalcidol...
Okamoto, Koji, Kashima, Kenji, Pereg, Yaron, Ishida, Michiko, Yamazaki, Satomi, Nota, Ayumi, ...
Understanding how p53 activity is regulated is crucial in elucidating mechanisms of cellular defense against cancer. Genetic data indicate that Mdmx as well as Mdm2 plays a major role in maintaining...
Okamoto, Koji, Kashima, Kenji, Pereg, Yaron, Ishida, Michiko, Yamazaki, Satomi, Nota, Ayumi, ...
Understanding how p53 activity is regulated is crucial in elucidating mechanisms of cellular defense against cancer. Genetic data indicate that Mdmx as well as Mdm2 plays a major role in maintaining...