Ibaraki University's
College of Engineering
Department of Computer and Information Sciences

顔写真
Professor

KAMADA Masaru


Other affiliation / position

  1. Institute for Global Change Adaptation Science (ICAS)

Career

  1. Research associate, Institute of Information Sciences and Electronics, University of Tsukuba 1988/04-1989/04
  2. Assistant professor, Institute of Information Sciences and Electronics, University of Tsukuba 1989/04-1992/03
  3. Associate professor, Department of Computer and Information Sciences, Ibaraki University 1992/04-2005/03
  4. Postdoctoral fellow, JSPS 1993/02-1995/02
  5. 常磐大学国際学部 非常勤講師 1997/04-Present
  6. Executive Director, Learning-i, Ltd. 2005/02-2013/08
  7. Professor, Department of Computer and Information Sciences, Ibaraki University 2005/04-Present

Academic background

  1. University of Tsukuba Third Cluster of College College of Information Science 1984
  2. University of Tsukuba Doctoral Program in Engineering Information Sciences and Electronics Doctor course 1988 Completed

Academic degrees

  1. Dr. of Engineering University of Tsukuba
  2. Master of Engineering University of Tsukuba

Current state of research and teaching activities

Teaching (presently) Programming ][, Logic circuits, Technical English, Advanced system theory; (in the past and at other universities) Information theory, Introduction to computer and information systems, Laboratory work in computer and information siences, Mathematical analysis, Differential equations, Programming in Pascal, C, Sparc and i8085 assembler, CPU assembling, Web authoring, Microsoft Word, Powerpoint and Excel.

Studying Dynamical model of hand-writing with application to letter recognition and cursive word generation,System-theoretic approach to discretization/reconstruction of continuous-time signals. Author and co-author of more than 40 journal papers and some other conference papers in the fields of sampling theory, approximation theory, signal processing, and pattern recognition.

Co-inventor of several patents in the fields of signal and image processing, web search engine, fair network gambling, and computer forensics.

Mathematical prescriber of LUXMAN DA-07 hi-fi Digital-to-analog converter, which received the 1988 Golden Sound Award from Stereo Sound Journal.

Research Areas

  1. Information and Communications Engineering
  2. Intelligent Informatics
  3. Mechanics and Control Engineering

Research keywords

  1. Signal and Image Processing, Sampling Theory, Dynamical Systems

Subject of research

  1. Discretization and Reconstruction of Continuous-time Signals 1992-Present
  2. Mathematical model of hand-writing letters 1994-2004
  3. Tool for authoring video games based on state-transition diagrams 状態遷移図によってキャラクタの動作を定義するビデオゲームの制作ツールおよび各種プラットフォームへのコンパイラを開発している。小学生でも使える直観的インタフェースが特徴である。一部は、商用サービスとして販売されている。 2003-Present
  4. Pulse design for UWB wireless communications system 成果広報ページ http://kamada.cis.ibaraki.ac.jp/JSPSgrant2005-2007/japanese/index.html 2004-Present
  5. hand-written letter recognition

Proposed theme of joint or funded research

  1. Short-range digital communications system (キーワード) UWB, impulse radio, 6Gpps Wish to undertake joint research with industry and other organizations including private sector. Technical consultation,Commisioned research,Joint research インパルス方式にこだわった通信方式を開発しました。重なり合う直交パルスを使うことによって高速化が可能となっています。
  2. Web-based services (キーワード) WWW, business models Wish to undertake joint research with industry and other organizations including private sector. Technical consultation,Commisioned research,Joint research 楽しい企画・誠実な実装をモットーとしております。

Bibliography

  1. Smart Sensors Networks- Communication Technologies and Intelligent Applications Fatos Xhafa, Fang-Yie Leu and Li-Ling Hung (eds.), Chapter 1 by Takahiro Inui, Masaki Kohana, Shusuke Okamoto, and Masaru Kamada Chapter 1: IoT Technologies: State of the Art and a Software Development Framework Academic Press 2017/06
  2. 工学基礎ミニマムシリーズ「数学ミニマム」改訂第2版 岡裕和, 榊原暢久, 中本律男, 西尾克義, 呉智深, 山中一雄, 矢内浩文, 鎌田賢 学術図書出版社 2002/02 第8章「固有値・固有ベクトルって何の役にたつの?」担当

Papers

  1. Research paper (international conference proceedings) Joint An HTML5 implementation of Web-Com for recording chalk annotations and talk voices onto web pages Shuji Ogawa, Michitoshi Niibori, Tatsuhiro Yonekura and Masaru Kamada In: L. Barolli et al. (eds.), Advances in Network-based Information Systems (Proceedings of the 20th International Conference on Network-based Information Systems, NBiS-2017), Lecture Notes on Data Engineering and Communications Technologies 7 Springer 1070-1075 2017/08
  2. Research paper (international conference proceedings) Joint A web application for passengers to watch coming buses in rural areas Yukiya Yamaguchi, Ryosuke Iiya, Michitoshi Niibori, Erjing Zhou, Masaru Kamada, Osamu Saitou and Susumu Shibusawa In: L. Barolli et al. (eds.), Advances in Network-based Information Systems (Proceedings of the 20th International Conference on Network-based Information Systems, NBiS-2017), Lecture Notes on Data Engineering and Communications Technologies 7 Springer 1061-1069 2017/08
  3. Research paper (international conference proceedings) Joint A block-based structure editor for the English language Osamu Goto, Michitoshi Niibori and Masaru Kamada In: L. Barolli et al. (eds.), Advances in Network-based Information Systems (Proceedings of the 20th International Conference on Network-based Information Systems, NBiS-2017), Lecture Notes on Data Engineering and Communications Technologies 7 Springer 1051-1060 2017/08
  4. Research paper (international conference proceedings) Joint Sparse approximation of ion-mobility spectrometry profiles by binomial splines Yuki Koshino and Masaru Kamada Proceedings of the12th International Conference on Sampling Theory and Applications (SampTA 2017) 2017/07
  5. Research paper (scientific journal) Joint Translator of Islay 3D animations into Flash platform Michitoshi Niibori, Makoto Rokujo, Shusuke Okamoto, Masaru Kamada and Tatsuhiro Yonekura Journal of Software Engineering and Applications 9/ 11, 547-560 2016/11 1945-3116 10.4236/jsea.2016.911037

Research presentations

  1. Oral presentation(invited, special) Cardinal splines in piecewise constant tension 5th International Conference on Computational Harmonic Analysis 2014/05/22 The cubic spline gives the smoothest interpolation of data in the sense that it minimizes the integral of its squared second derivative. The linear spline gives the shortest polygonal interpolation. The spline in tension was devised as a generalization of those two splines. It minimizes the integral of a weighted sum of the squared first and second derivatives. The weight on the first derivative is called tension because its increase makes the spline in tension approach the shortest linear spline while retaining smoothness like the cubic spline. The tension has been fixed as a single constant over the entire domain since its first appearance in 1966. In this talk, we shall look at the spline in tension as the output of a linear dynamical system model with a series of delta functions input. In exchange of restricting the sampling points to be uniform, we can place a different tension in each sampling interval because the control theory allows for time-varying dynamics. Solving the dead beat control problem of the system, we will eventu- ally have a locally supported basis for the space of cardinal splines in piecewise constant tension. An application is an adaptive image interpolation algorithm made up of the univariate spline interpolations in the horizontal and vertical directions. Varying the tension in proportion to an index of sharp change in brightness, we obtain image interpolation results with less ringing artifacts compared to those by the cubic spline interpolation. We will also discuss a similar model for bivariate splines in piecewise constant tension which may generalize the bicubic spline interpolation.
  2. Oral presentation(invited, special) Beat-Rest Pulsing for Impulse Radio Communications Second International Conference on Computer and Communications Engineering 2008/05/13 Keynote speech: A practical approach is presented for fast impulse-radio ultra-wide-bandwidth communications. It employs a train of overlapping time-limited pulses that are orthogonal to one another. For the sake of practicability, we assume that each pulse is shaped through a common bandpass filter excited by a staircase function. Instead of sending the pulses at the maximum rate, we transmit them every other clock interval, i.e., in the beat-and-rest rhythm. This relaxing rhythm halves the transmission rate but brings in the properties of being time-limited and orthogonal, which are crucial for real-time and robust detection of the received pulses, respectively. We obtain an example pulse which complies with the FCC regulation for indoor ultra-wide-bandwidth radio communications. This talk is based on the speaker's joint work with Semih Özlem and Hiromasa Habuchi.
  3. Oral presentation(invited, special) Locally supported splines in variable tension Second International Conference on Optimization and Optimal Control 2007/07/17
  4. Oral presentation(invited, special) On the Optimality of Splines for Expressing the Hand-Writing Process The X European Signal Processing Conference 2000/09

Intellectual property rights

  1. Patent 外部記憶装置及び外部記憶装置を使用する計算機 特願2009-285944 2009/12/17
  2. アクセスログ管理方法 2003-126244 2003/05/01
  3. ホスト・クライアント間のネットワークゲームシステム 2002-65455 2002/03/11
  4. ウェブページ検索システム, 二次情報収集装置, インターフェース装置 2001-041492 2001/02/19 2002-245089
  5. Video signal processing system for producing intermediate pixel data from neighboring pixel data to improve image quality 1992/01/13 US patent #5294984. 1994/03/15

Prizes

  1. Associate editor of outstanding dedication and effort, IEEE Industrial Electronics Society 2015/11/10 編集功労賞
  2. Associate editor of outstanding dedication and effort, IEEE Industrial Electronics Society 2012/10/25 論文誌編集への貢献に対する感謝状
  3. Honorary Foreign Member, Mongolian Mathematical Society Outstanding contributions and service to the development of applied mathematics in Mongolia 2010/06/25
  4. Appreciation for Service to the journal and for outstanding contribution to its ranking, IEEE Industrial Electronics Society 2009/11/10 論文誌編集への貢献に対する感謝状
  5. Appreciation of services as Student Paper Contest Co-chair for ISCAS2005, IEEE Circuits and System Society 2005/05/23 学会運営への貢献に対する感謝状

Memberships of academic societies

  1. Mathematical Reviews
  2. Sampling Theory in Signal and Image Processing
  3. Institute of Informations, Electronics and Communications Engineers
  4. Institute of Electric and Electronics Engineers

Committee Career

  1. Institute of Informations, Electronics and Communications Engineers Regular reviewer 1992/05-1997/05
  2. Institute of Informations, Electronics and Communications Engineers Associate editor, Transactions on Engineering Science 1997/05-2001/05
  3. Institute of Informations, Electronics and Communications Engineers Regualr reviewer 1997/05-Present
  4. Institute of Informations, Electronics and Communications Engineers Publications secretary, Engineering science society 1998/05-2000/05
  5. Institute of Informations, Electronics and Communications Engineers Webmaster, Engineering science society 1999/05-2000/05